L-shaped connector

Abstract

The utility model relates to the field of electrician, and provides an L-shaped connector, which comprises a metal shell, an insulating cylinder, a shielding layer and a pair of L-shaped cable joints sleeved in the insulating cylinder, the insulating cylinder is sleeved outside the cable joint and is positioned in the metal shell; the metal shell is provided with a first through hole and a second through hole for two cables to pass through, and the cable joint is used for being electrically connected with the two cables respectively; the two ends of the insulating cylinder are connected with the hole wall of the first through hole and the hole wall of the second through hole respectively, so that a sealing gap is formed between the insulating cylinder and the metal shell. The metal shell is provided with a glue injection port communicated with the sealing gap, and the glue injection port is provided with a one-way valve; the glue injection port is used for injecting semi-conductive rubber into the sealing gap, the metal shell is used for being connected with a grounding wire, and the semi-conductive rubber and the metal shell are electrically connected. And the semi-conductive rubber is used as the shielding layer, so that the L-shaped connector has excellent anti-vibration performance and is not easy to fall off from the insulating cylinder due to vehicle vibration, and the grounding performance of the L-shaped connector is effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical engineering, and particularly relates to an L-shaped connector. Background Art

[0002] The L-shaped connector is generally installed on the top of a rail transit locomotive vehicle for connecting cables. At present, most L-shaped connectors use spraying silver paint on the outer wall of an insulating cylinder as a shielding layer to complete grounding. However, the mechanical strength of the silver paint is low, and the silver paint is very easy to fall off in the environment of long-term vibration of the vehicle, resulting in poor grounding, and further increasing the risk of cable short circuit or electric shock. Summary of the Utility Model

[0003] The utility model provides an L-shaped connector to solve the problems that the L-shaped connector in the prior art has unstable grounding performance, increases the risk of cable short circuit or electric shock, and is difficult to ensure the signal transmission quality of the cable.

[0004] The utility model provides an L-shaped connector, including: a metal shell, an insulating cylinder, a semiconductive rubber, and a pair of L-shaped cable connectors sleeved in the insulating cylinder;

[0005] The insulating cylinder is sleeved outside the cable connectors and is located inside the metal shell; the metal shell has a first through hole and a second through hole for two cables to pass through, and the cable connectors are used for electrically connecting with the two cables respectively; both ends of the insulating cylinder are connected with the hole walls of the first through hole and the second through hole respectively to form a sealed gap between the insulating cylinder and the metal shell;

[0006] The metal shell is provided with a glue injection port communicated with the sealed gap, and a one-way valve is installed on the glue injection port; the glue injection port is used for injecting semiconductive rubber into the sealed gap, the metal shell is used for connecting a grounding wire, and the semiconductive rubber is electrically conducted with the metal shell.

[0007] According to the L-shaped connector provided by the utility model, it further includes a sealing bolt, the metal shell is provided with an exhaust port communicated with the sealed gap, and the sealing bolt is used for sealing the exhaust port.

[0008] According to the L-shaped connector provided by the utility model, the semiconductive rubber is semiconductive silicone rubber or semiconductive ethylene propylene diene monomer rubber.

[0009] According to the L-shaped connector provided by the utility model, it further includes a first connector and a second connector, at least part of the first connector and the second connector are respectively provided with a first external thread section and a second external thread section, and the hole walls of the first through hole and the second through hole are respectively provided with a first internal thread section and a second internal thread section;

[0010] The first external thread section and the first internal thread section are threadedly connected, the second external thread section and the second internal thread section are threadedly connected, and both ends of the insulating cylinder are respectively locked to the first connector and the second connector through locking bolts.

[0011] According to an L-shaped connector provided by the present utility model, the cable connector includes a first electrical connector and a second electrical connector. The first electrical connector and the second electrical connector are in abutment, the first electrical connector and the second electrical connector are arranged in an L shape, and the first electrical connector and the second electrical connector are respectively provided with a first groove and a second groove for crimping two said cables.

[0012] According to an L-shaped connector provided by the present utility model, it further includes a first stress cone and a second stress cone. The first stress cone and the second stress cone are respectively used for sleeving on the outsides of two said cables. The first stress cone and the second stress cone are respectively inserted into both ends of the insulating cylinder and respectively abut against the notch ends of the first groove and the second groove.

[0013] According to an L-shaped connector provided by the present utility model, it further includes a first sleeve and a second sleeve. The first sleeve and the second sleeve are respectively used for sleeving on two said cables. One ends of the first stress cone away from the cable connector and the second stress cone away from the cable connector are respectively embedded in the first sleeve and the second sleeve, and the first sleeve and the second sleeve are respectively fixedly connected to the first connector and the second connector through fixing bolts.

[0014] According to an L-shaped connector provided by the present utility model, it further includes a first spring and a second spring. The inner walls of the first sleeve and the second sleeve are respectively provided with a first lug and a second lug. One end of the first spring is fixedly connected to the first lug, and the other end is fixedly connected to one end of the first stress cone away from the first electrical connector;

[0015] One end of the second spring is fixedly connected to the second lug, and the other end is fixedly connected to one end of the second stress cone away from the second electrical connector.

[0016] According to an L-shaped connector provided by the present utility model, the insulating cylinder is an epoxy resin insulating cylinder or a polyvinyl chloride insulating cylinder.

[0017] According to an L-shaped connector provided by the present utility model, the metal shell is a copper shell.

[0018] The present utility model provides an L-shaped connector. By providing a glue injection port on the metal housing, the glue injection port is used to introduce semiconductive rubber into the sealing gap between the insulating cylinder and the metal housing, thereby forming a shielding layer on the outer wall of the insulating cylinder. The shielding layer is electrically connected to the metal housing, and the metal housing is connected to a grounding wire, thereby realizing the grounding of the L-shaped connector. Compared with the traditional silver paint shielding layer, the semiconductive rubber has better anti-vibration performance and is not easily dropped from the insulating cylinder due to vehicle vibration, effectively ensuring the grounding performance of the L-shaped connector, and thus ensuring the quality of signal transmission between the two cables. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic structural diagram of the L-shaped connector provided by the present utility model.

[0021] Reference Signs:

[0022] 1. Metal housing; 2. Insulating cylinder; 3. Semiconductive rubber; 4. Cable connector; 41. First electrical connector; 411. First groove; 42. Second electrical connector; 421. Second groove; 5. First connector; 51. First external thread section; 6. Second connector; 61. Second external thread section; 7. Locking bolt; 8. First stress cone; 9. Second stress cone; 10. First sleeve; 11. Second sleeve; 12. Fixed bolt; 13. First spring; 14. Second spring; 100. Cable. Detailed Embodiments

[0023] To make the purpose, technical solutions and advantages of the present utility model clearer, the following will clearly and completely describe the technical solutions in the present utility model with reference to the drawings in the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present utility model belong to the scope of protection of the present utility model.

[0024] The terms "first", "second" in the description and claims of the present utility model may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] The following Figure 1 , through specific embodiments and their application scenarios, a kind of L-shaped connector provided by the embodiments of the present utility model will be described in detail.

[0028] As Figure 1 shown, the present utility model provides an L-shaped connector, including: a metal shell 1, an insulating cylinder 2, a semi-conductive rubber 3, and a pair of L-shaped cable connectors 4 sleeved inside the insulating cylinder 2.

[0029] The insulating cylinder 2 is sleeved outside the cable connector 4 and is located inside the metal shell 1. The metal shell 1 has a first through hole and a second through hole for two cables 100 to pass through. The cable connectors 4 are used to be electrically connected to the two cables 100 respectively. The two ends of the insulating cylinder 2 are respectively connected to the hole walls of the first through hole and the second through hole to form a sealing gap between the insulating cylinder 2 and the metal shell 1.

[0030] The metal housing 1 is provided with a glue injection port communicating with the sealing gap. A one-way valve is installed at the glue injection port. The glue injection port is used to inject semiconductive rubber 3 into the sealing gap. The metal housing 1 is used to connect to the grounding wire, and the semiconductive rubber 3 and the metal housing 1 are electrically conductive.

[0031] It can be understood that, as Figure 1 shown, the metal housing 1 is L-shaped. Optionally, the metal housing 1 is a copper housing. The metal housing 1 is used for electrical connection with a grounding copper bar. Both the first through hole and the second through hole communicate with the cavity inside the metal housing 1. Two cables 100 respectively pass through the first through hole and the second through hole and are electrically connected through a cable joint 4, thereby realizing the electrical connection between the two cables 100. Among them, the cable joint 4 can be an L-shaped joint, and the two cables 100 are respectively electrically connected to both ends of the L-shaped electrical joint. Or, the cable joint 4 includes two straight electrical joints, the two electrical joints are vertically abutted, and the two cables 100 are respectively connected to the two straight electrical joints.

[0032] As Figure 1 shown, the insulating cylinder 2 is L-shaped. The cable joint 4 is fixed inside the insulating cylinder 2 to prevent the cable joint 4 from contacting surrounding metal components or other electrical conductors through the insulating cylinder 2, avoiding the risks of short circuit or electric shock, and at the same time protecting the cable joint 4 from physical damage. Optionally, the insulating cylinder 2 is an epoxy resin insulating cylinder or a polyvinyl chloride insulating cylinder. Both ends of the insulating cylinder 2 communicate with the first through hole and the second through hole respectively, so that the two cables 100 can sequentially pass through the metal housing 1 and the insulating cylinder 2 and be electrically connected to the cable joint 4.

[0033] Optionally, the glue injection port is arranged at the bottom of the metal housing 1. During glue injection, semiconductive rubber 3 fluid is filled into the sealing gap. When the entire sealing gap is filled with semiconductive rubber 3 fluid, stop glue injection. By installing a one-way valve at the glue injection port, prevent the semiconductive rubber 3 fluid from leaking out of the glue injection port. After the semiconductive rubber 3 fluid solidifies, a shielding layer is formed on the outer wall of the insulating cylinder 2. The shielding layer and the metal housing 1 are electrically conductive, realizing the grounding of the L-shaped connector, which can prevent the leakage of the cable 100 signal, and at the same time prevent the signal transmission between the two cables 100 from being affected by electromagnetic interference and radio frequency interference, effectively guiding these interferences to the ground, thereby protecting the signal inside the cable 100 from external interference.

[0034] Compared with the traditional silver paint shielding layer, the solidified semiconductive rubber 3 has better wear resistance and is not easy to slip off the insulating cylinder 2 under the influence of vibration and impact loads, effectively ensuring the grounding performance of the L-shaped connector, thereby ensuring the stability of signal transmission between the two cables 100.

[0035] The utility model provides an L-shaped connector. By arranging a glue injection port on the metal shell 1, the glue injection port is used to introduce semiconductive rubber 3 into the sealing gap between the insulating cylinder 2 and the metal shell 1, so as to form a shielding layer on the outer wall of the insulating cylinder 2. The shielding layer is electrically connected to the metal shell 1, and the metal shell 1 is connected to the ground wire, thereby realizing the grounding of the L-shaped connector. Compared with the traditional silver paint shielding layer, the semiconductive rubber 3 has better anti-vibration performance and is not easily dropped from the insulating cylinder 2 due to vehicle vibration, effectively ensuring the grounding performance of the L-shaped connector, and thus ensuring the quality of signal transmission between the two cables 100.

[0036] Further, the L-shaped connector further includes a sealing bolt. The metal shell 1 is provided with an exhaust port communicated with the sealing gap. The sealing bolt is used to seal the exhaust port.

[0037] Optionally, the exhaust port is arranged at the bottom of the metal shell 1. The exhaust port can discharge the gas or air in the sealing gap, prevent bubbles from being generated when injecting the semiconductive rubber 3 fluid, so as to ensure that the semiconductive rubber 3 fluid can be evenly distributed in the sealing gap, and avoid the air resistance caused by bubbles or reduce the flow efficiency of the semiconductive rubber 3 fluid.

[0038] In addition, after the sealing gap is filled with the semiconductive rubber 3 fluid, the exhaust port is sealed by the sealing bolt to prevent the semiconductive rubber 3 fluid from overflowing from the exhaust port.

[0039] Optionally, the semiconductive rubber 3 is semiconductive silicone rubber or semiconductive ethylene propylene diene monomer rubber.

[0040] In some embodiments, as Figure 1 shown, the L-shaped connector further includes a first connector 5 and a second connector 6. At least part of the first connector 5 and the second connector 6 are respectively provided with a first external thread section 51 and a second external thread section 61. The inner wall of the first through hole and the inner wall of the second through hole are respectively provided with a first internal thread section and a second internal thread section.

[0041] The first external thread section 51 is threadedly connected to the first internal thread section. The second external thread section 61 is threadedly connected to the second internal thread section. Both ends of the insulating cylinder 2 are locked to the first connector 5 and the second connector 6 respectively through locking bolts 7.

[0042] Specifically, the first connector 5 has a first connection hole for the cable 100 to pass through. The cable 100 passes through the first connection hole and is inserted into the cable joint 4. As Figure 1 shown, a part of the first connector 5 is inserted into the first through hole, and the first external thread section 51 is threadedly connected to the first internal thread section, thereby realizing the fixed connection between the first connector 5 and the metal shell 1. As Figure 1As shown, one end of the insulating cylinder 2 and the first connector 5 are fixed together by a locking bolt 7. By arranging the first connector 5 at the first through-hole, a support is provided for one end of the insulating cylinder 2 to prevent the insulating cylinder 2 from shifting, thereby ensuring the stability of the connection between the two cables 100 and the cable joint 4. In this embodiment, a sealing ring can be arranged at the first connection hole to form a leak-proof protection for the entire L-shaped connector.

[0043] Similarly, the second connector 6 has a second connection hole for the cable 100 to pass through. The cable 100 passes through the second connection hole and is inserted into the cable joint 4. As Figure 1 shown, a part of the second connector 6 is inserted into the second through-hole, and the second external thread section 61 and the second internal thread section are threadedly connected, thereby realizing the fixed connection between the second connector 6 and the metal shell 1. As Figure 1 shown, the other end of the insulating cylinder 2 and the second connector 6 can also be fixed together by a locking bolt 7. By arranging the second connector 6 at the second through-hole, a support is provided for the other end of the insulating cylinder 2 to prevent the insulating cylinder 2 from shifting, thereby ensuring the stability of the connection between the two cables 100 and the cable joint 4. In this embodiment, a waterproof ring can be arranged at the second connection hole to form a leak-proof protection for the entire L-shaped connector.

[0044] As Figure 1 shown, in some embodiments, the cable joint 4 includes a first electrical connector 41 and a second electrical connector 42. The first electrical connector 41 and the second electrical connector 42 are in abutment, and the first electrical connector 41 and the second electrical connector 42 are arranged in an L shape. The first electrical connector 41 and the second electrical connector 42 are respectively provided with a first groove 411 and a second groove 421 for crimping the two cables 100.

[0045] Specifically, both the first electrical connector 41 and the second electrical connector 42 are straight-shaped and are perpendicularly connected. Optionally, one of the first electrical connector 41 and the second electrical connector 42 is provided with a connection groove, and the other is inserted into the connection groove, thereby realizing the electrical connection between the first electrical connector 41 and the second electrical connector 42. As Figure 1 shown, the notch of the first groove 411 faces the end of the first electrical connector 41 away from the second electrical connector 42, and the notch of the second groove 421 faces the end of the second electrical connector 42 away from the first electrical connector 41.

[0046] During installation, the conductive end of one of the cables 100 is passed through the first through-hole and inserted into the first groove 411; then the conductive end of the other cable 100 is passed through the second through-hole and inserted into the second groove 421, and the electrical connection between the two cables 100 and the cable joint 4 can be realized.

[0047] In some embodiments, as Figure 1As shown in the figure, the L-shaped connector further includes a first stress cone 8 and a second stress cone 9. The first stress cone 8 and the second stress cone 9 are respectively sleeved on the outer sides of two cables 100. The first stress cone 8 and the second stress cone 9 are respectively inserted into two ends of the insulating cylinder 2, and respectively abut against the notch ends of the first groove 411 and the second groove 421.

[0048] Specifically, as Figure 1 shown, the first stress cone 8 is sleeved on the outer side of one of the cables 100, passes through the first through hole together with the cable 100, and is inserted into one end of the insulating cylinder 2. The outer side wall of the first stress cone 8 is closely attached to the inner wall of the insulating cylinder 2, and the first stress cone 8 abuts against the notch end of the first groove 411 to press the conductive end of the cable 100 into the first groove 411. Similarly, the second stress cone 9 is sleeved on the outer side of the other cable 100, passes through the second through hole together with the cable 100, and is inserted into the other end of the insulating cylinder 2. The outer side wall of the second stress cone 9 is closely attached to the inner wall of the insulating cylinder 2, and the second stress cone 9 abuts against the notch end of the second groove 421 to press the conductive end of the cable 100 into the second groove 421.

[0049] By respectively sleeving the first stress cone 8 and the second stress cone 9 on the outer sides of the two cables 100, the electric field at the cable joint 4 can be gradually transitioned, the local electric field intensity at the connection of the cables 100 is reduced, thereby reducing the risk of breakdown of the insulating cylinder 2 and enhancing the reliability of the entire L-shaped connector.

[0050] As Figure 1 shown, the L-shaped connector further includes a first sleeve 10 and a second sleeve 11. The first sleeve 10 and the second sleeve 11 are respectively sleeved on the two cables 100. One ends of the first stress cone 8 and the second stress cone 9 far from the cable joint 4 are respectively embedded in the first sleeve 10 and the second sleeve 11. The first sleeve 10 and the second sleeve 11 are respectively fixedly connected to the first connector 5 and the second connector 6 through fixing bolts 12.

[0051] Specifically, as Figure 1 shown, the first sleeve 10 is sleeved on the outer side of one of the cables 100, the second sleeve 11 is sleeved on the outer side of the other cable 100, and the first sleeve 10 and the second sleeve 11 are respectively locked on the first connector 5 and the second connector 6 through fixing bolts 12 to provide mechanical support for the two cables 100 and ensure the connection strength between the L-shaped connector and the cables 100. At the same time, the first through hole and the second through hole are respectively sealed by the first sleeve 10 and the second sleeve 11.

[0052] Furthermore, as Figure 1As shown in the figure, the L-shaped connector further includes a first spring 13 and a second spring 14. First lugs and second lugs are respectively provided on the inner walls of the first sleeve 10 and the second sleeve 11. One end of the first spring 13 is fixedly connected to the first lug, and the other end is fixedly connected to the end of the first stress cone 8 away from the first electrical connector.

[0053] One end of the second spring 14 is fixedly connected to the second lug, and the other end is fixedly connected to the end of the second stress cone 9 away from the second electrical connector.

[0054] By providing the first spring 13 between the first stress cone 8 and the first sleeve 10, when the first sleeve 10 is locked to the first connector 5, the first stress cone 8 is squeezed by the first spring 13, thereby increasing the locking force of the first stress cone 8 on the conductive end of the cable 100 connected thereto. By providing the second spring 14 between the second stress cone 9 and the second sleeve 11, when the second sleeve 11 is locked to the second connector 6, the second stress cone 9 is squeezed by the second spring 14, thereby increasing the locking force of the second stress cone 9 on the conductive end of the cable 100 connected thereto, and improving the connection strength between the cable joint 4 and the two cables 100.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An L-shaped connector, characterized in that: include: A metal shell, an insulating cylinder, a semi-conductive rubber and a pair of L-shaped cable connectors sleeved in the insulating cylinder; The insulating cylinder is sleeved on the outside of the cable connector and is located in the metal shell; the metal shell has a first through hole and a second through hole for two cables to pass through, and the cable connector is used to be electrically connected to the two cables respectively; the two ends of the insulating cylinder are respectively connected to the hole wall of the first through hole and the hole wall of the second through hole to form a sealed gap between the insulating cylinder and the metal shell; The metal shell is provided with a glue injection port connected to the sealing gap, and the glue injection port is installed with a one-way valve; the glue injection port is used to inject the semi-conductive rubber into the sealing gap, the metal shell is used to connect the grounding wire, and the semi-conductive rubber and the metal shell are electrically conductive.

2. The L-shaped connector according to claim 1, characterized in that: It also includes a sealing bolt. The metal shell is provided with an exhaust port connected to the sealing gap, and the sealing bolt is used to seal the exhaust port.

3. The L-shaped connector according to claim 1, characterized in that: The semi-conductive rubber is semi-conductive silicone rubber or semi-conductive EPDM rubber.

4. The L-shaped connector according to claim 1, characterized in that: It also includes a first connector and a second connector, wherein at least parts of the first connector and the second connector are respectively provided with a first external thread segment and a second external thread segment, and the hole wall of the first through hole and the hole wall of the second through hole are respectively provided with a first internal thread segment and a second internal thread segment; The first external thread section is threadedly connected to the first internal thread section, the second external thread section is threadedly connected to the second internal thread section, and both ends of the insulating tube are respectively locked to the first connector and the second connector by locking bolts.

5. The L-shaped connector according to claim 4, characterized in that: The cable connector includes a first electrical connector and a second electrical connector, the first electrical connector and the second electrical connector are abutted against each other, the first electrical connector and the second electrical connector are arranged in an L shape, and the first electrical connector and the second electrical connector are respectively provided with a first groove and a second groove for crimping the two cables.

6. The L-shaped connector according to claim 5, characterized in that: It also includes a first stress cone and a second stress cone, which are used to be respectively sleeved on the outside of the two cables, and the first stress cone and the second stress cone are respectively inserted at both ends of the insulating tube and respectively abut against the notch ends of the first groove and the second groove.

7. The L-shaped connector according to claim 6, characterized in that: It also includes a first sleeve and a second sleeve, the first sleeve and the second sleeve are used to be respectively sleeved on the two cables, one end of the first stress cone away from the cable connector and one end of the second stress cone away from the cable connector are respectively embedded in the first sleeve and the second sleeve, and the first sleeve and the second sleeve are respectively fixedly connected to the first connector and the second connector by fixing bolts.

8. The L-shaped connector according to claim 7, characterized in that: It also includes a first spring and a second spring, wherein the inner wall of the first sleeve and the inner wall of the second sleeve are respectively provided with a first support ear and a second support ear, one end of the first spring is fixedly connected to the first support ear, and the other end is fixedly connected to an end of the first stress cone away from the first electrical connector; One end of the second spring is fixedly connected to the second support ear, and the other end of the second spring is fixedly connected to an end of the second stress cone away from the second electrical connector.

9. The L-shaped connector according to claim 1, characterized in that: The insulating tube is an epoxy resin insulating tube or a polyvinyl chloride insulating tube.

10. The L-shaped connector according to claim 1, characterized in that: The metal shell is a copper shell.

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