CN111653903A - a shielding tail cover - Google Patents

Abstract

The invention discloses a shielding tail cover, which includes bolts, tail cover shells, set screws, tail clips and screw sleeves; the invention adopts the structure of tail cover shells, tail clips and screw sleeves; the invention can be used for cable shielding The shielding layer of its own is connected, and it can also be used to connect the additional shielding layer of the cable. The present invention adopts the tail cover shell and the tail clip to fix the shielding layer through the corrugated surface, which solves the problem that multiple cables are uniformly shielded to the outside. , the tail cover shell is fixed to the end of the connector, so that the external force on the cable is transmitted to the tail cover shell through the shielding layer, and then transmitted to the connector by the tail cover shell, which slows down and eliminates the connection point between the cable and the terminal It has the advantages of simple structure, convenient use, reliable connection and good shielding effect.

Description

a shielding tail cover

technical field

The invention relates to the technical field of shielding of electrical connectors, a shielding cover for preventing electromagnetic radiation or electromagnetic interference, in particular a shielding tail cover.

Background technique

With the rapid development of electronic equipment, a variety of technical means have emerged to solve the shielding problem of electronic equipment, such as the application of electronic jammers, the application of shielded grounding technology for connector butt, and the application of cable shielding and sheathing technology. In the process of applying the above technology, the termination technology of the cable and the shielding layer and the connector tail has not been well solved. In the equipment of the prior art, shielded connectors are used with shielded cables, and the cable shielding layer adopts ordinary tails. When the cover is clamped, the existing problem is that not only the wire clip cannot be grounded well, but also the clamping force of the cable shielding layer is not enough, the shielding layer is pulled out, the shielding performance is affected, and the problem of unified external shielding of multiple cables cannot be solved. ; There is also a copper mesh on the shielding layer to clamp the cable with the wire clip. The problem is that the cable connected by this connection method will not only be clamped by the wire clip, but the clamping force will be directly pressed to the shielding layer through the copper mesh. , and then press the cable under the shielding layer, causing the cable to be damaged, and the cable clamping force cannot be controlled. If it is loose, it is easy to cause the cable to come out. , This phenomenon causes the cable to produce bending alternating stress at the end of the connector, which makes the phenomenon of cable damage and root fracture more and more serious, especially for high-speed and high-frequency applications, which seriously affects its high-speed and high-frequency performance. Function failed.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a shielding tail cover for the deficiencies of the prior art. The invention adopts the structure of a tail cover shell, a tail clip and a screw sleeve; the invention can be used to connect the shielding layer of the cable itself, and also It can be used to connect the additional shielding layer of the cable. The invention adopts the tail cover shell and the tail clip to connect the shielding layer through the corrugated surface, which solves the problem that multiple cables are uniformly shielded to the outside. The end of the connector is fixed, so that the external force on the cable is transmitted to the tail cover shell through the shielding layer, and then transmitted to the connector by the tail cover shell, which slows down and eliminates the force on the connection point between the cable and the terminal, and buffers the cable in the The alternating stress on the end of the connector has the advantages of simple structure, convenient use, reliable connection and good shielding effect.

The concrete technical scheme that realizes the object of the present invention is:

A shielding tail cover is characterized by bolts, a tail cover shell, a set screw, a tail clip and a screw sleeve;

The tail cowl shell is a cylindrical piece, a step hole is arranged in one end of the cylinder, a first threaded hole is arranged on the hole wall of the step hole, and a stop and several outwardly convex corrugations are arranged on the outer wall of the barrel to stop the end cap. There are several second threaded holes on the mouth;

The end clip is a cylindrical piece composed of two semicircular shells, one end is provided with a boss, the other end is provided with an external thread, and the inner wall of the cylinder body is provided with several concave corrugations;

The screw sleeve is an annular piece provided with a stepped hole, and an internal thread is arranged in the hole;

The tail clip is fastened on the tail cover shell, the boss of the tail clip is arranged in the opening of the tail cover shell, the concave corrugations on the tail clip are engaged with the convex corrugations on the tail cover shell, and the screws are tightened. It is arranged in the second threaded hole of the tail cover shell and is fixedly connected with the boss of the tail clip;

the bolt is arranged in the first threaded hole of the tail cowl shell;

The threaded sleeve is arranged at the other end of the end clip, and the inner thread of the threaded sleeve engages with the outer thread of the end clip.

Several inwardly concave corrugations on the tail clip are correspondingly arranged with several outwardly convex corrugations on the tail cover shell.

The surfaces of several convex corrugations and several concave corrugations on the tail cover shell and the tail clip are shot peened.

The invention adopts the structure of a tail cover shell, a tail clip and a screw sleeve; the invention can be used to connect the shielding layer of the cable itself, and can also be used to connect the additional shielding layer of the cable. The tail clip fixes the shielding layer through the corrugated surface, which solves the problem of uniform shielding of multiple cables to the outside. The tail cover shell is used to fix the end of the connector, so that the external force on the cable is transmitted to the tail cover through the shielding layer. It is transmitted to the connector by the tail cover shell, which slows down and eliminates the force on the connection point between the cable and the terminal, buffers the alternating stress on the cable at the end of the connector, and has the advantages of simple structure, convenient use, reliable connection and The advantage of good shielding effect.

The invention solves the technical problems such as cable damage and shielding layer coming off caused by cable tension;

After the shielding tail cover of the present invention is integrally assembled, the shielding tail cover and the shielding layer can form a shielding cavity, which can be shielded in all directions in 360°, thereby improving the shielding efficiency of the cable;

The invention transmits the axial force of the cable from the shielding tail cover to the connector, so as to avoid the influence on the high-frequency and high-speed performance of the cable due to damage to the cable.

Description of drawings

Fig. 1 is the structural representation of the present invention;

2 is a schematic structural diagram of a tail cowl shell of the present invention;

Fig. 3 is the structural representation of the tail clip of the present invention;

Fig. 4 is the side view of Fig. 3;

5 is a schematic diagram of a first use state of the present invention;

6 is a schematic diagram of a second use state of the present invention;

FIG. 7 is a schematic diagram of a third use state of the present invention.

Detailed ways

Referring to FIG. 1 , the present invention includes a bolt 1 , a tail cover shell 2 , a set screw 3 , a tail clip 4 and a screw sleeve 5 .

Referring to FIGS. 1 and 2 , the tail cowl shell 2 is a cylindrical part, and one end of the cylinder is provided with a stepped hole 21 , the hole wall of the stepped hole 21 is provided with a first threaded hole 22 , and the outer wall of the cylinder There are stop openings 23 and several outwardly convex corrugations 24 , and the stop openings 23 are provided with several second threaded holes 25 .

Referring to Figure 1, Figure 3, Figure 4, the end clip 4 is a cylindrical piece composed of two semicircular shells, one end is provided with a boss 41, the other end is provided with an external thread, and the inner wall of the barrel is provided with several inner The concave corrugation 42; the screw sleeve 5 is an annular piece with a stepped hole, and an internal thread 51 is arranged in the hole.

Referring to FIGS. 1 , 2 and 3 , the tail clip 4 is fastened on the tail cowl shell 2 , the boss 41 of the tail clip 4 is set in the stop 23 of the tail cowl shell 2 , and the upper part of the tail clip 4 is inside The concave corrugations 42 are engaged with the convex corrugations 24 on the tail cowl shell 2, and the set screw 3 is arranged in the second threaded hole 25 of the tail cowl shell 2 and is fixedly connected with the boss 41 of the tail clip 4; the said The bolt 1 is arranged in the first threaded hole 22 of the tail cover shell 2 ; the screw sleeve 5 is arranged at the other end of the tail clip 4 , and the inner thread 51 of the screw sleeve 5 is engaged with the outer thread of the tail clip 4 .

Referring to FIG. 1 , FIG. 2 , and FIG. 3 , several concave corrugations 42 on the tail clip 4 are correspondingly arranged with several outwardly convex corrugations 24 on the tail cover shell 2 .

The surface of several convex corrugations 24 on the tail cover shell 2 is shot peened; the surface of several concave corrugations 42 on the tail clip 4 is shot peened.

Embodiment 1 of the present invention

The present invention is used to connect the shielding layer of the cable itself:

Referring to Figure 1 and Figure 5, for a single cable with its own shielding layer connection, strip the cable core, shielding layer and insulating layer; The core of the cable is connected to the terminal of the connector, the shielding layer of the cable is sleeved on the convex corrugated surface 24 of the tail cover shell 2, the tail clip 4 is buckled on the tail cover shell 2, and the The boss 41 is installed in the stop 23 of the tail cowl shell 2. As the concave corrugations 42 on the tail clip 4 mesh with the convex corrugations 24 on the tail cowl shell 2, the shielding layer is squeezed on the tail cowl shell. Between the body 2 and the end clip 4, engage the inner thread 51 of the threaded sleeve 5 with the outer thread of the end clamp 4, install the set screw 3 in the second threaded hole 25 of the end cap shell 2 and connect with the end clamp 4 The boss 41 is fixedly connected;

The step hole 21 of the tail cover shell 2 is docked with the end of the connector, and the bolt 1 is installed in the first threaded hole 22 of the tail cover shell 2 and fixed with the end of the connector, so as to realize the shielding of the cable itself in the present invention layers are connected.

Embodiment 2 of the present invention

The present invention is used to connect the additional shielding layer of the cable:

Referring to Figure 1 and Figure 6, for multiple cables, regardless of whether the cables have their own shielding layers, the multiple cables need to be shielded uniformly. In this case, a sleeve-shaped additional shielding layer 6 is used; The invention is connected, and the invention is connected with a connector, and the other end is connected with the outer surface of a plurality of cables through a clamp.

When connecting, first strip off the cores, shielding layers and insulating layers of the multiple cables; insert the additional shielding layer 6, the screw sleeve 5 and the tail cover shell 2 into the multiple cables in turn, and connect the cores of the multiple cables to the cables in turn. Connect the terminals of the connector, cover the additional shielding layer 6 on the convex corrugated surface 24 of the tail cover shell 2, buckle the tail clip 4 on the tail cover shell 2, and place the boss 41 of the tail clip 4 on the tail cover shell 2. Installed in the stop 23 of the tail cowl shell 2, as the concave corrugations 42 on the tail clip 4 mesh with the convex corrugations 24 on the tail cowl shell 2, the additional shielding layer 6 is squeezed on the tail cowl shell. Between the body 2 and the end clip 4, engage the inner thread 51 of the threaded sleeve 5 with the outer thread of the end clamp 4, install the set screw 3 in the second threaded hole 25 of the end cap shell 2 and connect with the end clamp 4 Finally, the other end of the additional shielding layer 6 is connected with the outer surface of the plurality of cables through a clamp.

The step hole 21 of the tail cover shell 2 is butted with the end of the connector, and the bolt 1 is installed in the first threaded hole 22 of the tail cover shell 2 and fixed with the end of the connector, so as to realize the connection between the multiple cables of the present invention. Shield connection.

Embodiment 3 of the present invention

The connection between the two pieces of the present invention is provided with the cable and additional shielding:

Referring to Fig. 1 and Fig. 7, one end of the additional shielding layer 6 is connected with the present invention, connected with a connector by the present invention, and the other end is connected with another connector by the present invention; the additional shielding layer 6 is arranged on two present inventions Between the inventions, the external force on the cable is transmitted to the two tailgate shells 2 through the shielding layer, and then transmitted to the two connectors by the two tailgate shells 2 respectively, which slows down and eliminates the stress on the connection point between the cable and the terminal. force.

Referring to FIG. 1 , the stepped hole 21 of the tailgate shell 2 of the present invention is adapted to the end of the connector, which can be used for circular or rectangular connectors, and realizes the processing of a single cable or multiple cable harnesses at the end of the connector.

Referring to FIG. 1, the present invention transmits the external force on the cable to the tail cover shell 2 through the shielding layer, and then transmits it to the connector from the tail cover shell 2, which slows down and eliminates the force on the connection point between the cable and the terminal, and buffers the The alternating stress that the cable is subjected to at the end of the connector, and the outer shielding of a single cable or multiple cables is realized at the end of the connector.

The additional shielding layer selected by the present invention is woven from metal wire or woven from chemical fiber and metal mixed wire.

Referring to Figure 1 and Figure 2, when the tail cowl shell 2 is assembled with the tail clip 4, in order to prevent the set screw 3 from falling into the joint of the two semicircular shell tail clips 4, the present invention is provided on the tail cowl shell 2 Four second threaded holes 25 are formed.

Referring to FIGS. 1 , 2 and 3 , in order to increase the layer friction force of the tail cowl shell 2 and the tail clip 4 to the shielding, the present invention provides several external convex corrugations 24 on the tail cowl shell 2 and the tail clip 4 on the surface and the inner surface. The surface of the concave corrugations 42 is shot peened.

Claims (4)

1. A shielding tail cover is characterized by comprising a bolt (1), a tail cover shell (2), a set screw (3), a tail clamp (4) and a threaded sleeve (5);

the tail cover shell (2) is a cylindrical piece, a step hole (21) is formed in one end of the cylinder, a first threaded hole (22) is formed in the wall of the step hole (21), a spigot (23) and a plurality of convex corrugations (24) are formed in the outer wall of the cylinder body, and a plurality of second threaded holes (25) are formed in the spigot (23);

the tail clamp (4) is a cylindrical part formed by combining two semicircular shells, one end of the cylindrical part is provided with a boss (41), the other end of the cylindrical part is provided with an external thread, and the inner wall of the cylindrical body is provided with a plurality of concave ripples (42);

the threaded sleeve (5) is an annular piece provided with a step hole, and an internal thread (51) is arranged in the hole;

the tail clamp (4) is buckled on the tail cover shell (2), a boss (41) of the tail clamp (4) is arranged in a spigot (23) of the tail cover shell (2), an inwards concave ripple (42) on the tail clamp (4) is meshed with an outwards convex ripple (24) on the tail cover shell (2), and a set screw (3) is arranged in a second threaded hole (25) of the tail cover shell (2) and fixedly connected with the boss (41) of the tail clamp (4);

the bolt (1) is arranged in a first threaded hole (22) of the tail cover shell (2);

the thread insert (5) is arranged at the other end of the tail clamp (4), and the internal thread (51) of the thread insert (5) is meshed with the external thread of the tail clamp (4).

2. A shielding tail-hood according to claim 1, characterized in that a plurality of inwardly concave corrugations (42) on the tail clip (4) are arranged corresponding to a plurality of outwardly convex corrugations (24) on the tail-hood housing (2).

3. A shielding boot according to claim 1, characterized in that the plurality of outwardly convex corrugations (24) of the boot shell (2) are surface peened.

4. A shielding tail cap according to claim 1, characterized in that a plurality of concave corrugations (42) on the tail clip (4) are surface peened.

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