WO2017185299A1

WO2017185299A1 - Modular plug capable of reducing lay damage degree, and communication cable

Info

Publication number: WO2017185299A1
Application number: PCT/CN2016/080509
Authority: WO
Inventors: 周胜灵
Original assignee: 深圳市秦通通讯有限公司
Priority date: 2016-04-28
Filing date: 2016-04-28
Publication date: 2017-11-02

Abstract

A modular plug (12) capable of reducing a lay damage degree comprises a modular plug body (14) provided with an inner chamber (26). The modular plug body is provided with a first end (22) and a second end (24) opposite to each other. The first end is provided with a metal terminal (28). The second end is provided with an opening (30) that communicates with the inner chamber for insertion of a cable (10) into the inner chamber. The opening of the second end is formed by a plurality of frames in a surrounding manner. Each frame is provided with a frame inner side at the opening and a frame outer side away from the opening. One of the frames is outwards bent and projects to form a recessed surface on the frame inner side facing to the opening and form a raised surface on the frame outer side deviating from the opening. According to the modular plug, the cross section of the opening is enlarged, so that only a section of sheath (34) of the cable part inserted into the inner chamber is removed, and a section of sheath close to the opening does not need to be removed, thereby reducing the length of the cable of which the lay is damaged, effectively reducing signal crosstalk between two twisted wires, and improving the network transmission effect.

Description

Crystal head and communication cable capable of reducing the degree of damage of the lay length

[0001] The present invention relates to a crystal head, and more particularly to a crystal head and a communication cable capable of reducing the degree of damage of the lay length.

Background technique

[0002] The crystal head is an important interface component in cable connection, especially in network connection. It is a plastic connector that can be inserted into the device port in a fixed direction and can prevent the crystal head from falling off from the device port. The crystal head is mainly used to connect devices such as network card ports, hubs, switches and telephones, and is suitable for field termination between devices or horizontal subsystems.

[0003] As the speed of network transmission is getting higher and higher, the wire diameter of the network cable is getting thicker and thicker. The existing crystal head has a small opening for inserting a cable, and can only accommodate a CAT5 or a part of a CAT6 network cable. To accommodate a larger bandwidth CAT6A or CAT7 network cable, only the sheath of the network cable can be removed and flattened and inserted. In the crystal head, the part of the cable inserted into the inner cavity of the crystal head can only be a part of the cable sheath removed. After the cable sheath is removed, the winding of the core, that is, the twist of the wire, changes. In the low-speed cable crystal head, since the cable head can be completely inserted into the crystal head, although the cable is partially removed from the cable sheath at the end near the metal terminal of the crystal head, the lay length is also destroyed, but since the distance is very short, Its destruction basically does not cause signal crosstalk. However, if the cables housed in the cavity of the crystal head are all removed from the cable sheath, the pitch of the core in the crystal head is completely destroyed, and this length may cause a large Signal crosstalk. technical problem

In view of this, the present invention proposes a crystal head capable of reducing the degree of damage of the lay length.

The present invention also provides a communication cable capable of reducing the degree of lay damage.

Problem solution

Technical solution

[0006] A crystal head capable of reducing the degree of damage of the lay length, comprising a crystal head body having an inner cavity, the crystal head body having opposite first and second ends, wherein the first end is provided with a metal terminal, The second end a mouth opening communicating with the inner cavity for inserting a cable into the inner cavity, the mouth of the second end being surrounded by a plurality of frames, each frame having a frame located inside and away from the frame of the mouthpiece The outer side of the frame of the mouthpiece is curved outwardly to form a concave surface on the inner side of the frame facing the cornice, and a convex surface is formed on the outer side of the frame facing away from the cornice.

In an embodiment, the cornice is surrounded by two opposite short sides and two opposite long sides, and the frame of the outwardly curved protrusion is one of the long sides.

In one embodiment, the crystal head includes a pressing elastic piece connected to the crystal head body and located on the other long side of the crystal head body.

In an embodiment, the concave surface is an arc or a V-shaped concave surface, and the convex surface is an arc or a V-shaped convex surface.

[0010] In an embodiment, the crystal head includes a first plug installed in the mouth, the first plug is press-fitted with the mouth, and the first plug has a circular inner shape. a hole, the inner hole being in communication with the inner cavity.

[0011] In an embodiment, the crystal head further includes a second plug mounted in the inner hole of the first plug, and the inner hole of the second plug is in communication with the inner cavity.

[0012] In an embodiment, the first plug is a hard rubber plug, and the second plug is an artificial rubber mat.

[0013] In an embodiment, the crystal head further includes a metal shield, the metal shield is sleeved on the crystal head body, and the crystal head body is provided with a first communicating with the inner cavity. a boring hole, the first boring hole is located on a sidewall of the crystal head body where the frame of the outwardly curved protrusion is located, and the metal shield is disposed to be bent toward the pupil corresponding to the boring position At least one metal dome that is deformed.

[0014] In an embodiment, the crystal head body has four body sidewalls, including a first body sidewall, a second body sidewall, a third body sidewall, and a fourth body sidewall, the four Forming the inner cavity into the inner cavity, wherein the first body sidewall is opposite to the third body sidewall, the second body sidewall is opposite to the fourth body sidewall, and the first pupil is formed in the The metal shield has a second bore corresponding to the first bore, and the fourth body sidewall is connected to a connector socket for fastening to a connector socket. Pressing the elastic piece, the connector socket is for receiving and electrically connecting with the crystal head; the metal shielding cover comprises a first shielding cover side wall, a second shielding cover side wall and a third shielding cover side wall, The first shield sidewall and the third shield sidewall respectively extend from opposite sides of the second shield sidewall, and the second bore is formed on the first shield sidewall and the third shield Between the side walls At least one metal dome is rotatably coupled to the first shield sidewall and/or the third shield sidewall

[0015] The present invention also provides a communication cable, including a cable and a crystal head connected to one end of the cable, the crystal head includes a crystal head body having a cavity, and the crystal head body has an opposite One end and a second end, the first end is provided with a metal terminal, the second end is provided with a mouth communicating with the inner cavity, the cable comprises a plurality of wire cores and covering the plurality of strands a sheath of the wire core, one end of the cable is inserted into the inner cavity from the port and electrically connected to the metal terminal, and the mouth of the second end is surrounded by a plurality of frames, each frame has a An inner side of the frame of the cornice and an outer side of the frame facing away from the cornice, wherein one of the frames is outwardly curved to form a concave surface on the inner side of the frame facing the cornice, and away from the cornice A convex surface is formed on the outer side of the frame, and the cable portion inserted into the inner cavity includes a portion where the sheath is removed and a portion where the sheath is not removed.

Advantageous effects of the invention

Beneficial effect

[0016] In summary, the present invention provides a crystal head capable of reducing the degree of damage of the lay length. The mouth of the crystal head is surrounded by two relatively short frames and two relatively long frames, and the mouth is connected with the inner cavity of the crystal head. Each frame has a frame side on the side of the cornice and a side of the frame away from the cornice, wherein one long frame is outwardly curved to form a concave surface on the side of the frame facing the cornice, and is formed on the side of the frame facing away from the cornice A convex surface to increase the cross-sectional area of the cornice. The invention also provides a communication cable, wherein by increasing the cross-sectional area of the cornice, only a portion of the sheath portion of the cable inserted into the inner cavity is removed, and a portion of the sheath near the mouth can be removed without being removed, thereby shortening The length of the cable whose striking distance is broken effectively reduces the signal crosstalk between the twisted pairs and enhances the network transmission effect.

Brief description of the drawing

DRAWINGS

1 is a schematic exploded view of an embodiment of a crystal head and a cable of the present invention.

2 is an assembled view of the crystal head of FIG. 1 connected to a cable.

3 is a schematic cross-sectional perspective view of the crystal head of FIG. 1.

4 is a perspective structural view of the crystal head of FIG. 1.

[0021] FIG. 5 is a partial cross-sectional structural view showing the connection of a crystal head and a cable. 6 is an exploded perspective view showing a second embodiment of the plug of the crystal head of the present invention.

7 is an assembled view of a crystal head including the plug of FIG. 6 connected to a cable. [0023] FIG.

Embodiments of the invention

[0024] Before the embodiments are described in detail, it is understood that the invention is not limited to the details The invention may be embodied in other ways. Further, it should be understood that the phraseology and terminology used herein are for the purpose of description The words "including", "comprising", "having", and the like, as used herein, are meant to include the items listed thereafter, their equivalents, and other additional items. In particular, when describing "a certain component", the present invention does not limit the number of the components to one, and may include a plurality.

As shown in FIGS. 1 to 5, the present invention provides a communication cable including a cable 10 and a crystal head 12 connected to the end of the cable 10. The crystal head 12 includes a crystal head body 14, a metal shield 16, a pressing elastic piece 18, and a first plug 20.

The crystal head body 14 has opposite first ends 22, second ends 24, and a lumen 26 formed between the first ends 22 and the second ends 24. The first end 22 is provided with a metal terminal 28, and the second end 24 is provided with a spout 30 communicating with the inner cavity 26, and the first plug 20 is mounted in the spout 30. The cable 10 includes a plurality of wire cores 32 and a sheath 34 covering a plurality of wire cores. The cable 10 - end is inserted into the inner cavity 26 from the mouth 30 and electrically connected to the metal terminal 28 disposed at the first end 22 of the crystal head. connection.

[0027] In the illustrated embodiment, the crystal head body 14 has four body sidewalls including a first body sidewall 36, a second body sidewall 38, a third body sidewall 40, and a fourth body sidewall 42. . The four body sidewalls define a cavity 26 of the crystal head body 14, wherein the first body sidewall 36 is opposite the third body sidewall 40, and the second body sidewall 38 is opposite the fourth body sidewall 42. The second body side wall 38 is provided with a first boring hole 44 communicating with the inner cavity 26, and the fourth body side wall 42 is connected with a pressing elastic piece 18 for snap-connecting with a connector socket. The connector socket is A socket on an electronic device for receiving and electrically connecting to the crystal head 12.

[0028] The mouth 30 of the second end 24 of the crystal head is surrounded by a plurality of frames of the crystal head body 14, each frame having an inner side of the frame of the mouth 30 and a frame facing away from the mouth 30, one of the frames facing outward The curved protrusion forms a concave surface on the inner side of the frame facing the mouth 30, and forms a concave surface on the outer side of the frame facing away from the mouth 30 Convex.

[0029] In the illustrated embodiment, the crystal head opening 30 is surrounded by four frames, including a first frame 46, a second frame 48, a third frame 50, and a fourth frame 52, wherein the first frame 46 and The third frame 50 is two opposite short sides, the second frame 48 and the fourth frame 52 are two opposite long sides, and the outwardly curved raised frame is one of the long sides. The four frames are located at the outer edges of the four body sidewalls toward the second end 24 of the crystal head body 14. Specifically, the first frame 46 is located at the outer edge of the first body sidewall 36, the second frame 48 is located at the outer edge of the second body sidewall 38, and the third frame 50 is located at the outer edge of the third body sidewall 40. The fourth frame 52 is located at the outer edge of the fourth body side wall 42. The second frame 48 is located between the first port 44 and the second end 24 of the crystal head.

[0030] In this embodiment, the frame of the outwardly curved protrusion is a second frame 48. The second frame 48 has a frame inner side 54 located in the mouth 30 and a frame outer side 56 facing away from the mouth 30. The second frame 48 is oriented. The outer curved projection forms an arcuate concave surface on the inner side 54 of the frame facing the cornice 30, and an arcuate convex surface corresponding to the curved concave surface is formed on the outer side 56 of the frame facing away from the cornice 30. The frame is convex outward, which is equivalent to increasing the size of the mouth 30 and the cavity 26 without changing the overall structure of the crystal head 12. With the crystal head 12 having such a mouth 30, when the cable 10 is inserted into the inner cavity 26, the cable 10 can be inserted together with the sheath 34, and the sheath 34 needs to be removed only at a position close to the metal terminal 28. In other words, the portion of the cable that is inserted into the lumen 26 includes a portion ₅₈ from which the sheath is removed and a portion 60 from which the sheath is not removed (as shown in Figure 5) such that only the length of the strand is broken. And this damage does not cause large signal crosstalk, which is acceptable. Therefore, this greatly reduces the damage to the lay length of the twisted pair in the inner cavity 26, reducing the influence of signal crosstalk.

[0031] The pressing elastic piece 18 is connected to the side of the crystal head body 14 where the fourth bezel 52 is disposed, that is, the frame on which the elastic piece 18 is pressed is opposed to the outwardly curved convex frame. The pressing elastic piece 18 is used to lock the crystal head 12 with the interface elastic buckle to prevent accidental falling off when the crystal head 12 is inserted into the electronic device interface. When the crystal head needs to be removed 12 吋, the pressing elastic piece 18 needs to be pressed, and the buckle is released to pull out the crystal head. Since the frame on which the pressing elastic piece 18 is located is opposed to the outwardly curved convex frame, the pressing action of the pressing elastic piece 18 is not affected. The pressing elastic piece 18 is well known to those skilled in the art and therefore will not be described in detail.

[0032] It should be understood that the concave surface and the convex surface are designed as curved surfaces in this embodiment, in other embodiments. It is also possible to design concave and convex surfaces of other shapes, for example, V-shaped convex surfaces and V-shaped concave surfaces, or arched convex surfaces and arched concave surfaces, as long as the cross-sectional area of the cornice 30 can be increased and the design requirements are met. The invention is not limited thereto.

[0033] It should also be understood that, in this embodiment, the crystal head mouth 30 is surrounded by four frames for detailed description. According to the specific design requirements of the crystal head, the crystal head mouth 30 may also be other The number of borders is enclosed as long as the cross-sectional area of the cornice can be increased and the design requirements are met, and the present invention is not limited thereto.

The metal shield cover 16 is sleeved on the crystal head body 14. The metal shield cover 16 is provided with at least one metal elastic piece 62 which can be bent and deformed toward the first bore 44 at a position corresponding to the first bore 44.

[0035] Specifically, referring to FIG. 1, the metal shield 16 has a second bore 64 corresponding to the first bore 44. The metal shield 16 includes a first shield sidewall 66 and a second shield side. The wall 68 and the third shield sidewall 70, wherein the first shield sidewall 66 and the third shield sidewall 70 extend from opposite sides of the second shield sidewall 68, respectively. When the metal shield 16 is sleeved on the crystal head body 14, the first shield sidewall 66 is attached to the first body sidewall 36, and the second shield sidewall 68 is attached to the fourth body sidewall 42. Together, the third shield sidewall 70 is attached to the third body sidewall 40. The first bore 44 is formed on the second body sidewall 38, and the second bore 64 is formed between the first shield sidewall 66 and the third shield sidewall 70. The at least one metal dome 62 is rotatably Connected to the first shield side wall 66 and/or the third shield side wall 70. In the embodiment, the metal elastic piece 62 is set to two, and the two metal elastic pieces 62 are rotatably connected to the first shielding cover side wall 66 and the third shielding cover side wall 70, respectively. The first shield side wall 66 extends away from the edge of the second shield side wall 68 toward the third shield side wall 70 to extend a first metal piece 72 away from the second shield side wall 68. One edge of the first shield cover side wall 66 extends a third metal piece 74. When the metal shield cover 16 is sleeved on the crystal head body 14, the first metal piece 72 and the third metal piece 74 abut the first Two borders 48.

[0036] In the illustrated embodiment, each of the metal domes 62 has a free end 76 facing the opposing metal dome, a notch 78 is formed at a corner of the free end 76, and the notches 78 of the two free ends 76 are offset from each other to The rotation of the two metal domes 62 is not affected by each other.

Referring also to FIGS. 1 and 5, the cable 10 further includes a plurality of wire cores 32, a screen mesh 80 covering the plurality of wire cores 32, and a sheath 34 wrapped around the screen mesh 80. The cable 10 is also provided with electrical connection with the shielding net 80. Ground wire. Inside the crystal head 12, a jacket 34 having a length of cable 10 is removed. When the metal elastic piece 62 is bent and deformed toward the first boring hole 44, the metal elastic piece 62 is electrically connected to the shielding net 80 to achieve the effect of the grounding shielding. Therefore, when assembling the crystal head 12 and the cable 10吋, it is only necessary to remove a section of the cable head and remove the shield mesh of the head section, and retain a shield net 80 close to the unremoved sheath, and then directly The previously processed cable head is inserted into the crystal head cavity 26, and then the metal dome 62 is pressed toward the first bore 44 until it is electrically connected to the shield mesh 80. This installation process is simple and provides good ground shielding. In order to obtain good electrical contact, a section of the screen mesh 80 that is inserted into the cable head of the crystal head cavity 26 should extend at least to the position corresponding to one of the metal domes 62, so that the metal dome 62 can be pressed. Good grounding shielding effect.

[0038] It should be understood that, in this embodiment, the notches 78 are disposed at the free ends 76 of the metal domes 62, and the notches 78 are offset from each other in such a manner that the rotation of the two metal domes 62 are not affected by each other, but the present invention is not This is defined, and in other embodiments, other means may be used, such as setting the free end 76 in a gear shape in intermeshing form.

[0039] It should also be understood that in other embodiments, the number of metal domes 62 may also be set to one or more than two depending on design requirements and various factors.

[0040] The first plug 20 is mounted in the mouth 30, and the first plug 20 has an inner bore 82, and the inner bore 82 communicates with the inner cavity 26. In order to allow the crystal head 12 to accommodate a variety of wire diameters, the crystal head 12 also includes a second plug 84. Referring to FIG. 6 and FIG. 7, the second plug 84 is replaceably mounted in the inner hole 82 of the first plug 20. The second plug 84 has an inner hole 86, and the inner hole 86 of the second plug 84 is The inner cavity 26 is connected, and the cable 10 - end is inserted into the inner cavity 26 from the inner hole 86 of the second plug 84 and electrically connected to the metal terminal 28, and the second plug 84 is pressed against the outer surface of the sheath 3 4 Between the inner walls of a plug 20.

[0041] In the illustrated embodiment, the first plug 20 is a rigid rubber plug and is press fit with the spout 30. The inner bore 82 of the first plug 20 is a circular inner bore 82, and the second plug 84 is An annular second plug 84 mated with a circular inner bore 82, the second plug 84 being a soft plug, such as an elastomeric pad, whose resiliently contracted nature causes the cable 10 and the second plug 84 to be tightly squeezed together. The inner bore 86 of the second plug 84 is a circular inner bore 86 that mates with the cable 10. It should be noted that the first plug 20 is a hard rubber plug, and the second plug 84 is an artificial rubber mat. This is only one embodiment of the present invention. In other embodiments, the first plug 20 and the second according to specific needs. The plug 84 can also be made of other materials.

[0042] The first plug 20 includes a plug head 88 that mates with the mouthpiece 30 and a plug wall 90 that extends from the plug head 88 toward the inner cavity 26. When the first plug 20 is inserted into the inner cavity 26, the plug wall 90 is The inner wall of the crystal head body 14 abuts to securely connect the first plug 20 to the crystal head body 14. In the present embodiment, the number of plug walls 90 is two and symmetrically distributed.

[0043] The second plug 84 is provided with at least one stopping portion 92 to prevent the second plug 84 from falling out of the inner hole 82 of the first plug 20. In the illustrated embodiment, the at least one stop portion 92 includes two symmetrical stop portions 92 that are radially outwardly disposed at the periphery of the second plug 84. In the process of axially mounting the second plug 84 into the inner bore 82 of the first plug 20, the second plug 84 is inserted into the first plug 20 from the inner side of the first plug 20, that is, the side on which the plug wall 90 is disposed. In the inner hole 82, the two stoppers 92 are caught on the inner side of the first plug 20 to prevent the second plug 84 from coming off the inner hole 82 of the first plug 20 when the cable 10 is pulled. As shown in Fig. 6, the inner side of the first plug 20 is provided with a retaining groove 93 that engages with the stopper portion 92. It should be understood that in other embodiments, the stops 92 may be other numbers as well. In other embodiments, other embodiments may be employed to prevent the second plug 84 from falling out of the inner bore 82 of the first plug 20 or to secure the second plug 84 in the inner bore 82 of the first plug 20, the present invention. Not limited to this.

[0044] In order to make the connection of the first plug 20 and the crystal head body 14 more stable, in the illustrated embodiment, the first plug 20 further includes a resilient hook 94 extending from the plug 88 toward the inner cavity 26, resilient The hook 94 can realize a small range of elastic expansion and contraction in the vertical direction. Correspondingly, the crystal head body 14 is provided with a card slot 96 that cooperates with the elastic hook 94. In the present embodiment, the card slot 96 is disposed on the second frame 48 (ie, the second body side wall 38) that is outwardly curved, and the card slot 96 is in communication with the first port 44. In the first stopper 20 is pressed into the opening 30 inches Jian, Jian plug opening 88 located at 30, 90 the plug wall 26 against the inner wall of the lumen, i.e., the first crystal on the inner wall of the body 14, the elastic hook ₉₄ snaps into The first plug 20 and the crystal head body 14 are firmly fixed in the card slot 96. In the present embodiment, the number of the elastic hooks 94 and the card slots 96 are respectively two, but in other embodiments, other numbers may be used.

[0045] It should be understood that, in order to firmly connect the first plug 20 and the crystal head body 14, the embodiment adopts a manner that the elastic hook 94 is matched with the card slot 96. In other embodiments, other implementations may also be used. The method is not limited by the present invention.

[0046] In summary, the present invention provides a crystal head capable of reducing the degree of damage of the lay length, and the opening of the crystal head is Two relatively short frames and two relatively long frames are enclosed, the mouthpiece is connected with the inner cavity of the crystal head, and each frame has a frame side on the side of the cornice and a side of the frame away from the cornice, wherein one long frame is outwardly curved and convex in the A concave surface is formed on the side of the frame facing the cornice, and a convex surface is formed on the side of the frame facing away from the cornice, thereby increasing the cross-sectional area of the cornice. The invention also provides a communication cable, wherein by increasing the cross-sectional area of the fistula, only a section of the sheath inserted into the inner cavity is removed, and a section of the sheath close to the fistula can be removed without being removed. The length of the cable whose striking distance is broken, thereby effectively reducing the signal crosstalk between the twisted pairs and enhancing the network transmission effect. The metal shield is provided with a metal elastic piece that can be bent and deformed toward the first pupil so that the metal elastic piece abuts against the shielding net, and has a simple structure and a clever design, thereby achieving a good shielding grounding effect. The invention also replaceably mounts a second plug in the inner hole of the first plug, and the second plug can be freely replaced according to the wire diameter of the cable, so that the crystal head can be applied to a plurality of wire diameter cables.

The concepts described herein may be embodied in other forms without departing from the spirit and scope. The specific embodiments disclosed are to be considered as illustrative and not restrictive. Therefore, the scope of the invention is to be determined by the appended claims rather Any changes which come within the meaning and range of the claims are intended to be within the scope of the claims.

Claims

Claim

[Claim 1] A crystal head capable of reducing the degree of damage of the lay length, comprising a crystal head body having an inner cavity, the crystal head body having opposite first and second ends, the first end being provided with a metal a port, the second end is provided with a port communicating with the inner cavity for inserting a cable into the inner cavity, wherein the port of the second end is surrounded by a plurality of frames, each frame Having an inner side of the bezel at the cornice and a side of the frame facing away from the cornice, wherein one of the frames is outwardly curved to form a concave surface on the inner side of the frame facing the cornice, and away from the beak A convex surface is formed on the outer side of the frame of the mouth.

[Claim 2] The crystal head capable of reducing the degree of damage of the lay length according to claim 1, wherein the cornice is surrounded by two opposite short sides and two opposite long sides, the outward bending The raised border is one of the long sides.

[Claim 3] The crystal head capable of reducing the degree of damage of the lay length according to claim 2, wherein the crystal head comprises a pressing elastic piece, and the pressing elastic piece is connected to the crystal head body and located at the The other side of the crystal head body is on the long side.

[Claim 4] The crystal head capable of reducing the degree of damage of the lay length according to claim 1, wherein the concave surface is an arc or a V-shaped concave surface, and the convex surface is an arc or a V-shaped convex surface.

[Claim 5] The crystal head capable of reducing the degree of damage of the lay length according to claim 1, wherein the crystal head includes a first plug installed in the mouth, the first plug and the first plug The fistula is press-fitted, and the first plug has a circular inner hole, and the inner hole is in communication with the inner cavity.

[Claim 6] The crystal head capable of reducing the degree of damage of the lay length according to claim 5, wherein the crystal head further comprises a second plug installed in the inner hole of the first plug, the second An inner bore of the plug is in communication with the inner lumen.

[Claim 7] The crystal head capable of reducing the degree of damage of the lay length according to claim 6, wherein the first plug is a hard rubber plug, and the second plug is an artificial rubber mat.

[Claim 8] The crystal head capable of reducing the degree of damage of the lay length according to claim 1, wherein the crystal head further comprises a metal shield, and the metal shield is sleeved on the crystal head body The crystal head body is provided with a first pupil communicating with the inner cavity, the first a boring hole is located on a side wall of the crystal head body where the frame of the outwardly curved protrusion is located, and the metal shield cover is provided with at least one metal elastic piece capable of being bent and deformed toward the boring hole corresponding to the boring position. .

[Claim 9] The crystal head capable of reducing the degree of damage of the lay length according to claim 8, wherein the crystal head body has four body sidewalls, including a first body sidewall and a second body sidewall a third body sidewall and a fourth body sidewall, wherein the four body sidewalls are formed to form the inner cavity, wherein the first body sidewall is opposite to the third body sidewall, and the second body sidewall Opposite the fourth body sidewall, the first bore is formed on the second body sidewall, the metal shield has a second bore corresponding to the first bore, the fourth A pressing elastic piece for snap-connecting with a connector socket is connected to the sidewall of the body, the connector socket is for receiving and electrically connected to the crystal head; and the metal shielding cover comprises a first shielding cover sidewall a second shield sidewall and a third shield sidewall, the first shield sidewall and the third shield sidewall respectively extending from opposite sides of the second shield sidewall, the second a pupil is formed on the first shield sidewall and the third Between the side walls of the shield, the at least one metal dome is rotatably coupled to the first shield sidewall and/or the third shield sidewall.

[Claim 10] A communication cable comprising a cable and a crystal head connected to one end of the cable, the crystal head comprising a crystal head body having a cavity, the crystal head body having an opposite first end And the second end, the first end is provided with a metal terminal, the second end is provided with a mouthpiece communicating with the inner cavity, the cable comprises a plurality of wire cores and covering the plurality of wire cores The sheath is inserted into the inner cavity from the port and electrically connected to the metal terminal, wherein the second end of the port is surrounded by a plurality of frames, each frame Having an inner side of the bezel at the cornice and a side of the frame facing away from the cornice, wherein one of the frames is outwardly curved to form a concave surface on the inner side of the frame facing the cornice, and away from the beak A convex surface is formed on the outer side of the frame of the mouth, and the cable portion inserted into the inner cavity includes a portion where the sheath is removed and a portion where the sheath is not removed.