CN107732486B - Cable connection assembly - Google Patents

Abstract

The present invention discloses a kind of cable connection assembly, comprising: inner housing；Terminal module is contained in the inner housing, the keeping body with conductive terminal and holding conductive terminal；And cable, it is protruded into from one end of the inner housing and is electrically connected to the conductive terminal.The cable connection assembly further includes the single spring connection terminal being sleeved on one exposed outside section conductive shielding layer of the cable, and the single spring connection terminal is used to the conductive shielding layer of the cable being electrically connected to the inner housing.Therefore, in the present invention, reduce number of parts, significantly reduce the assembling complexity of cable connection assembly, the cost of cable connection assembly is reduced, while also largely saving the inside installation space of cable connection assembly, reduces the size of entire cable connection assembly.

Description

cable connection assembly

technical field

The present invention relates to a cable connection assembly, and more particularly to a cable connection assembly suitable for electrically connecting a conductive shielding layer of a cable to a housing.

Background technique

At present, outdoor cable connection components are used under very harsh conditions, and usually require good anti-electromagnetic interference functions, especially in copper cable connection applications. Since the current transmission medium of the copper cable connection is made of metal, it is easily affected by the electromagnetic interference of the surrounding environment, resulting in unstable signal transmission. In order to avoid the electromagnetic interference of the surrounding environment on signal transmission, in the prior art, an electromagnetic shielding structure is generally used around the transmission medium. The electromagnetic shielding structure of common cable products is a metal braid wrapped on the inner insulator of the cable. (Also known as conductive shielding layer).

In the prior art, in addition to having a good electromagnetic shielding function, the outdoor cable connection assembly also needs to have a good lightning protection function. In order to avoid being struck by lightning, the existing solutions are usually implemented by grounding the conductive shielding layer of the cable, so that the large amount of current generated by the lightning strike can be quickly conducted to the ground, reducing damage or interference to the product caused by the lightning strike.

In the prior art, in order to ground the conductive shielding layer of the cable, the cable connection assembly generally requires at least three separate electrical connection components. Usually, the three independent electrical connection parts include a metal barrel part, a first elastic terminal part and a second elastic terminal part. The first elastic terminal part is installed inside the metal cylinder part, and the second elastic terminal part is installed outside the metal cylinder part. The metal barrel part is set on the exposed conductive shielding layer of the cable, the first elastic terminal part is used for elastic electrical contact with the conductive shielding layer of the cable, and the second elastic terminal part is used for elastic electrical contact with the inner wall of the housing of the cable connection assembly. contact, so that the conductive shield of the cable can be electrically connected to the housing of the cable connection assembly, and the housing of the cable connection assembly can be electrically connected to the device housing, so that the conductive shield of the cable can be grounded via the device housing.

However, in the prior art, since at least three separate electrical connection parts are required to electrically connect the conductive shielding layer of the cable to the housing of the cable connection assembly, the number of parts is too large, which makes the installation of the cable connection assembly difficult , larger volume and higher cost.

Contents of the invention

The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and deficiencies in the prior art.

According to one aspect of the present invention, there is provided a cable connection assembly, including: an inner housing; a terminal module accommodated in the inner housing, having a conductive terminal and a holding body for holding the conductive terminal; and a cable connected from the inner housing. One end of the casing extends into and is electrically connected to the conductive terminal. The cable connection assembly further includes a single elastic connection terminal sleeved on an exposed section of the conductive shielding layer of the cable, and the single elastic connection terminal is used to electrically connect the conductive shielding layer of the cable to the inner shell body.

According to an embodiment of the present invention, the single elastic connection terminal includes: a cylindrical body; a plurality of first elastic arms formed on the cylindrical body and protruding into the interior of the cylindrical body; and a plurality of first elastic arms. A second elastic arm is formed on the cylindrical body and protrudes to the outside of the cylindrical body. When the single elastic connecting terminal is sleeved on the conductive shielding layer of the cable, the first elastic arm is in elastic electrical contact with the conductive shielding layer of the cable, and the second elastic arm is in elastic electrical contact with the inner housing The inner wall of the cable is in elastic electrical contact, thereby electrically connecting the conductive shield of the cable to the inner housing.

According to another embodiment of the present invention, the first elastic arms and the second elastic arms are arranged alternately and at intervals around the circumferential direction of the cylindrical body; the first elastic arms and the second elastic arms Extending a predetermined length in the axial direction of the cylindrical body.

According to another embodiment of the present invention, the first elastic arm is in a convex arc shape, and the second elastic arm is in an outward convex arc shape.

According to another embodiment of the present invention, the first elastic arm protrudes toward the inside of the cylindrical body along the radial direction of the cylindrical body; and the second elastic arm protrudes along the radial direction of the cylindrical body The radial direction protrudes toward the outside of the cylindrical body.

According to another embodiment of the present invention, the first elastic arm and the second elastic arm are directly formed by a part of the peripheral wall of the cylindrical body.

According to another embodiment of the present invention, the cable connection assembly further includes an outer housing sleeved on the inner housing and a mating housing fitted into a port of the outer housing.

According to another embodiment of the present invention, the mating housing is located on the other end of the inner housing and is adapted to be releasably latched to the outer housing.

According to another embodiment of the present invention, the cable connection assembly further includes an elastic electromagnetic shielding terminal arranged on the other end of the inner housing, and the elastic electromagnetic shielding terminal is pressed between the inner housing and the inner housing. between the matching shells, so that the inner shell is electrically connected to the matching shells.

According to another embodiment of the present invention, said mating housing is adapted to be mounted on a device housing, so that the conductive shielding of a cable electrically connected to said inner housing can be electrically connected to said inner housing via said mating housing. equipment housing, and can be grounded through the equipment housing.

According to another embodiment of the present invention, the elastic electromagnetic shielding terminal includes a cylindrical body and an outwardly protruding arc-shaped elastic piece formed on the cylindrical body.

According to another embodiment of the present invention, the cylindrical body of the elastic electromagnetic shielding terminal is sleeved on the other end of the inner casing and electrically connected with the inner casing; the arc shape of the elastic electromagnetic shielding terminal The elastic sheet is in elastic electrical contact with the inner wall of the matching housing.

According to another embodiment of the present invention, the cable connection assembly further includes: a sealing sleeve, which is sleeved on the outer covering layer of the cable and fitted into the port at one end of the inner housing; and a threaded sleeve, which is threaded connected to one end of the inner housing to compress the gland against the outer sheath of the cable and the end wall of the inner housing to seal the port at one end of the inner housing .

According to another embodiment of the present invention, the terminal module includes a first terminal module and a second terminal module adapted to be mated together; the first terminal module includes a first conductive terminal and holds the first conductive terminal The first holding body; the second terminal module includes a second conductive terminal and a second holding body holding the second conductive terminal; the first holding body is suitable for being assembled on the other end of the inner housing In the port, the second holding body is adapted to be assembled on the first holding body, and the first conductive terminal is adapted to be in elastic electrical contact with the second conductive terminal.

According to another embodiment of the present invention, the cable connection assembly further includes an elastic clip adapted to clamp the conductor of the cable on one end of the first conductive terminal, so that the conductor of the cable It is electrically connected with the first conductive terminal; the other end of the first conductive terminal is formed with an elastic contact piece, and the elastic contact piece is suitable for elastic electrical contact with one end of the second conductive terminal, and the second conductive terminal The other end of the terminal extends from the second holding body and is suitable for being electrically connected to a circuit board.

In the aforementioned embodiments of the present invention, the conductive shielding layer of the cable can be directly electrically connected to the inner housing of the cable connection assembly via a single elastic connection terminal, thereby reducing the number of parts and greatly reducing the complexity of assembling the cable connection assembly To a certain extent, the cost of the cable connection assembly is reduced, and at the same time, the internal installation space of the cable connection assembly is greatly saved, and the size of the entire cable connection assembly is reduced.

Other objects and advantages of the present invention will be apparent from the following description of the present invention with reference to the accompanying drawings, and may help to provide a comprehensive understanding of the present invention.

Description of drawings

FIG. 1 shows a perspective assembly diagram of a cable connection assembly according to an embodiment of the present invention;

Figure 2 shows a longitudinal sectional view of the cable connection assembly shown in Figure 1;

Fig. 3 shows a schematic perspective view of a cable connection assembly according to an embodiment of the present invention, wherein the mating shell has not yet been assembled on the outer shell;

4 shows a schematic perspective view of a single elastic connection terminal for electrically connecting the conductive shielding layer of the cable to the inner housing according to an embodiment of the present invention; and

FIG. 5 shows a plan view of a single elastic connection terminal shown in FIG. 4 .

Detailed ways

The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals designate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention, but should not be construed as a limitation of the present invention.

In addition, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a comprehensive understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in diagrammatic form to simplify the drawings.

According to a general technical concept of the present invention, a cable connection assembly is provided, including: an inner housing; a terminal module accommodated in the inner housing, having a conductive terminal and a holding body for holding the conductive terminal; and a cable from which One end of the inner casing extends into and is electrically connected to the conductive terminal. The cable connection assembly further includes a single elastic connection terminal sleeved on an exposed section of the conductive shielding layer of the cable, and the single elastic connection terminal is used to electrically connect the conductive shielding layer of the cable to the inner shell body.

FIG. 1 shows a perspective assembly diagram of a cable connection assembly according to an embodiment of the present invention; FIG. 2 shows a longitudinal sectional view of the cable connection assembly shown in FIG. 1 .

As shown in FIGS. 1 and 2 , in the illustrated embodiment, the cable connection assembly mainly includes: an inner housing 200 , terminal modules 411 , 412 , 421 , 422 and a cable 10 . The terminal modules 411 , 412 , 421 , 422 are housed in the inner housing 200 and have conductive terminals 412 , 422 and holders 411 , 421 for holding the conductive terminals 412 , 422 . The cable 10 protrudes from one end (the right end in the figure) of the inner casing 200 and is electrically connected to the conductive terminals 412 , 422 .

Figure 4 shows a schematic perspective view of a single elastic connection terminal 100 for electrically connecting the conductive shielding layer 12 of the cable 10 to the inner housing 200 according to an embodiment of the present invention; and Figure 5 shows the single elastic connection shown in Figure 4 A plan view of the terminal 100.

As shown in FIGS. 1-2 and 4-5 , in an embodiment of the present invention, the cable connection assembly further includes a single elastic connection terminal 100 sleeved on an exposed section of the conductive shielding layer 12 of the cable 10 . The single elastic connection terminal 100 is used to electrically connect the conductive shielding layer 12 of the cable 10 to the inner housing 200 .

As clearly shown in FIGS. 4 and 5 , in the illustrated embodiment, the single elastic connecting terminal 100 mainly includes: a cylindrical body 110 , a plurality of first elastic arms 111 and a plurality of second elastic arms 112 . A plurality of first elastic arms 111 are formed on the cylindrical body 110 and protrude to the inside of the cylindrical body 110 . A plurality of second elastic arms 112 are formed on the cylindrical body 110 and protrude to the outside of the cylindrical body 110 .

As shown in Fig. 2, Fig. 4 and Fig. 5, in the illustrated embodiment, when the single elastic connecting terminal 100 is set on the conductive shielding layer 12 of the cable 10, the first elastic arm 111 and the conductive shielding layer of the cable 10 12 is in elastic electrical contact, and the second elastic arm 112 is in elastic electrical contact with the inner wall of the inner housing 200 , thereby electrically connecting the conductive shielding layer 12 of the cable 10 to the inner housing 200 .

As clearly shown in FIGS. 4 and 5 , in the illustrated embodiment, the first elastic arms 111 and the second elastic arms 112 are arranged alternately and at intervals around the circumferential direction of the cylindrical body 110 . The first elastic arm 111 and the second elastic arm 112 extend a predetermined length along the axial direction of the cylindrical body 110 .

As clearly shown in FIG. 4 and FIG. 5 , in the illustrated embodiment, the first elastic arm 111 is in a convex arc shape, and the second elastic arm 112 is in an outward convex arc shape.

4 and 5 clearly show that in the illustrated embodiment, the first elastic arm 111 protrudes toward the inside of the cylindrical body 110 along the radial direction of the cylindrical body 110; and the second elastic arm 112 protrudes along the cylindrical body 110 The radial direction of the cylindrical body 110 protrudes toward the outside of the cylindrical body 110 .

As clearly shown in FIGS. 4 and 5 , in the illustrated embodiment, the first elastic arm 111 and the second elastic arm 112 are directly formed by a part of the peripheral wall of the cylindrical body 110 . For example, the first elastic arm 111 and the second elastic arm 112 can be directly formed by punching the peripheral wall of the cylindrical body 110 , so that the processing is simple.

FIG. 3 shows a schematic perspective view of a cable connection assembly according to an embodiment of the present invention, wherein the mating shell 700 has not been assembled on the outer shell 300;

As shown in FIG. 1 , FIG. 2 and FIG. 3 , in the illustrated embodiment, the cable connection assembly further includes an outer housing 300 set on the inner housing 200 and a mating housing 700 fitted into the port of the outer housing 300 .

As shown in FIGS. 1 , 2 and 3 , in the illustrated embodiment, the mating housing 700 is located on the other end (the left end in the figure) of the inner housing 200 and is adapted to lock in a releasable manner. to the outer casing 300.

As shown in Fig. 1, Fig. 2 and Fig. 3, in the illustrated embodiment, the cable connection assembly further includes an elastic electromagnetic shielding terminal 800 disposed on the other end of the inner housing 200, and the elastic electromagnetic shielding terminal 800 is squeezed Pressing between the inner housing 200 and the mating housing 700 makes the inner housing 200 electrically connected with the mating housing 700 .

As shown in FIGS. 1 , 2 and 3 , in the illustrated embodiment, the mating housing 700 is adapted to be mounted to an equipment housing (not shown) such that the cable 10 electrically connected to the inner housing 200 The conductive shielding layer 12 may be electrically connected to the device housing via the mating housing 700 and may be grounded through the device housing.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , in the illustrated embodiment, the elastic electromagnetic shielding terminal 800 includes a cylindrical body 810 and an outwardly protruding arc spring 811 formed on the cylindrical body 810 .

As shown in FIG. 1 , FIG. 2 and FIG. 3 , in the illustrated embodiment, the cylindrical body 810 of the elastic electromagnetic shielding terminal 800 is set on the other end of the inner housing 200 and is electrically connected to the inner housing 200 ; The arc-shaped elastic piece 811 of the elastic electromagnetic shielding terminal 800 is in elastic electrical contact with the inner wall of the mating housing 700 .

As shown in FIG. 1 , FIG. 2 and FIG. 3 , in the illustrated embodiment, the cable connection assembly further includes a sealing sleeve 500 and a threaded sleeve 600 . The sealing sleeve 500 is sleeved on the outer covering layer 11 of the cable 10 and fitted into a port at one end of the inner housing 200 . The threaded sleeve 600 is screwed onto one end of the inner housing 200 so that the sealing sleeve 500 is extruded on the outer coating 11 of the cable 10 and the end wall of the inner housing 200 to seal the port at one end of the inner housing 200 .

As shown in FIGS. 1 , 2 and 3 , in the illustrated embodiment, the terminal modules 411 , 412 , 421 , 422 include first terminal modules 411 , 412 and second terminal modules 421 adapted to be mated together. , 422. The first terminal modules 411 and 412 include first conductive terminals 412 and a first holder 411 holding the first conductive terminals 412 . The second terminal modules 421 and 422 include second conductive terminals 422 and a second holding body 421 holding the second conductive terminals 422 . The first holding body 411 is suitable for fitting into the port at the other end of the inner housing 200 , the second holding body 421 is suitable for fitting on the first holding body 411 , and the first conductive terminal 412 is suitable for being elastically connected to the second conductive terminal 422 electrical contact.

As shown in FIGS. 1 , 2 and 3 , in the illustrated embodiment, the cable connection assembly further includes an elastic clip 413 , and the elastic clip 413 is adapted to clamp the conductor 13 of the cable 10 at one end of the first conductive terminal 412 , so that the conductor 13 of the cable 10 is electrically connected to the first conductive terminal 412 . The other end of the first conductive terminal 412 is formed with an elastic contact piece 412a, the elastic contact piece 412a is suitable for elastic electrical contact with one end of the second conductive terminal 422, and the other end of the second conductive terminal 422 extends from the second holder 421, Suitable for electrical connection to a circuit board (not shown).

Those skilled in the art can understand that the above-described embodiments are exemplary, and those skilled in the art can improve them, and the structures described in various embodiments do not conflict with each other in terms of structure or principle Can be combined freely.

Although the present invention has been described with reference to the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to illustrate preferred embodiments of the present invention and should not be construed as a limitation of the present invention.

While certain embodiments of the present general inventive concept have been shown and described, it will be understood by those of ordinary skill in the art that changes may be made to these embodiments without departing from the principles and spirit of the present general inventive concept. The scope is defined by the claims and their equivalents.

It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. Furthermore, any element references in the claims should not be construed as limiting the scope of the invention.

Claims (14)

1. A cable connection assembly, comprising: Inner housing (200); a terminal module (411, 412, 421, 422), housed in the inner housing (200), having conductive terminals (412, 422) and holding bodies (411, 421) for holding the conductive terminals (412, 422); and a cable (10), extending from one end of the inner housing (200) and electrically connected to the conductive terminals (412, 422), It is characterized by: The cable connection assembly also includes a single elastic connection terminal (100) sleeved on an exposed conductive shielding layer (12) of the cable (10), and the single elastic connection terminal (100) is used to connect the the conductive shield (12) of the cable (10) is electrically connected to said inner housing (200), The single elastic connection terminal (100) includes: cylindrical body (110); A plurality of first elastic arms (111) are formed on the cylindrical body (110) and protrude into the interior of the cylindrical body (110) for the conductive shielding layer with the cable (10) (12) elastic electrical contacts; and A plurality of second elastic arms (112) are formed on the cylindrical body (110) and protrude to the outside of the cylindrical body (110) for contacting with the inner wall of the inner casing (200) elastic electrical contacts, The first elastic arm (111) and the second elastic arm (112) are directly formed by a part of the peripheral wall of the cylindrical body (110), and are located between two ends of the cylindrical body (110). 2. The cable connection assembly according to claim 1, characterized in that: When the single elastic connection terminal (100) is sleeved on the conductive shielding layer (12) of the cable (10), the first elastic arm (111) and the conductive shielding layer (12) of the cable (10) ) elastic electrical contact, and the second elastic arm (112) is in elastic electrical contact with the inner wall of the inner housing (200), thereby electrically connecting the conductive shielding layer (12) of the cable (10) to the Inner housing (200). 3. The cable connection assembly according to claim 2, characterized in that: The first elastic arms (111) and the second elastic arms (112) are arranged alternately and at intervals around the circumferential direction of the cylindrical body (110); The first elastic arm (111) and the second elastic arm (112) extend a predetermined length along the axial direction of the cylindrical body (110). 4. The cable connection assembly according to claim 3, characterized in that: The first elastic arm (111) is in a convex arc shape, and the second elastic arm (112) is in an outward convex arc shape. 5. The cable connection assembly according to claim 4, characterized in that: The first elastic arm (111) protrudes toward the inside of the cylindrical body (110) along the radial direction of the cylindrical body (110); and The second elastic arm (112) protrudes toward the outside of the cylindrical body (110) along the radial direction of the cylindrical body (110). 6. The cable connection assembly according to claim 2, characterized in that: The cable connection assembly further includes an outer housing (300) sleeved on the inner housing (200) and a mating housing (700) fitted into a port of the outer housing (300). 7. The cable connection assembly according to claim 6, characterized in that: The mating housing (700) is located on the other end of the inner housing (200) and is adapted to be releasably latched to the outer housing (300). 8. The cable connection assembly according to claim 7, characterized in that: The cable connection assembly also includes an elastic electromagnetic shielding terminal (800) arranged on the other end of the inner housing (200), and the elastic electromagnetic shielding terminal (800) is pressed on the inner housing (200). ) and the mating housing (700), so that the inner housing (200) is electrically connected to the mating housing (700). 9. The cable connection assembly according to claim 8, characterized in that: The mating housing (700) is adapted to be mounted on the device housing, so that the conductive shielding layer (12) of the cable (10) electrically connected to the inner housing (200) can pass through the mating housing (700) ) is electrically connected to the device housing and may be grounded through the device housing. 10. The cable connection assembly according to claim 8, characterized in that: The elastic electromagnetic shielding terminal (800) includes a cylindrical body (810) and an outwardly protruding arc-shaped elastic piece (811) formed on the cylindrical body (810). 11. The cable connection assembly according to claim 10, characterized in that: The cylindrical body (810) of the elastic electromagnetic shielding terminal (800) is sleeved on the other end of the inner housing (200) and electrically connected to the inner housing (200); The arc-shaped shrapnel (811) of the elastic electromagnetic shielding terminal (800) is in elastic electrical contact with the inner wall of the matching housing (700). 12. The cable connection assembly according to claim 8, further comprising: a gland (500) fitted over the outer coating (11) of said cable (10) and fitted into a port at one end of said inner housing (200); and a threaded sleeve (600), screwed onto one end of the inner casing (200), so as to squeeze the sealing sleeve (500) between the outer coating (11) of the cable (10) and the on the end wall of the inner housing (200), thereby sealing the port at one end of the inner housing (200). 13. The cable connection assembly of claim 1, wherein: The terminal modules (411, 412, 421, 422) comprise a first terminal module (411, 412) and a second terminal module (421, 422) adapted to be interfitted together; The first terminal module (411, 412) includes a first conductive terminal (412) and a first holder (411) holding the first conductive terminal (412); The second terminal module (421, 422) includes a second conductive terminal (422) and a second holder (421) holding the second conductive terminal (422); The first holding body (411) is adapted to be fitted in the port at the other end of the inner casing (200), and the second holding body (421) is adapted to be fitted to the first holding body (411) Above, the first conductive terminal (412) is suitable for being in elastic electrical contact with the second conductive terminal (422). 14. The cable connection assembly of claim 13, wherein: The cable connection assembly further includes an elastic clip (413), the elastic clip (413) is suitable for clamping the conductor (13) of the cable (10) on one end of the first conductive terminal (412), electrically connecting the conductor (13) of the cable (10) to the first conductive terminal (412); The other end of the first conductive terminal (412) is formed with an elastic contact piece (412a), and the elastic contact piece (412a) is suitable for elastic electrical contact with one end of the second conductive terminal (422). The other end of the two conductive terminals (422) extends from the second holding body (421), and is suitable for being electrically connected to a circuit board.