A shielded wire connector

Abstract

The application discloses a shielding wire joint, which comprises a shell, a connecting head, a cable through the shell, the connecting head comprising a center pin, an isolation layer, a joint body and a terminal post, the connecting head being connected with a sensor, the joint body being through, the isolation layer being installed between the outside of the center pin and the inner wall of the left end of the joint body, the terminal post being installed at the right end of the joint body, the core wire on the end of the cable being inserted and fixed with the right end of the center pin through the terminal post, so that the signal on the core wire is transmitted to the sensor through the center pin, the shell and the connecting head being detachably connected, and the connecting head seals the left end of the shell after being connected, so that a sealed area is formed in the shell, and the joint body, the right end of the center pin and the core wire on the end of the cable are located in the sealed area. The application has the advantages of convenient replacement of the cable with a proper length according to the length requirement of the wire connection without stripping treatment and reduction of the fault rate of the wire connection.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of shielding wire connecting equipment, and particularly relates to a shielding wire joint. BACKGROUND

[0002] The length of a sensor factory cable is generally fixed, and when the length of the sensor cable needs to be extended, secondary connection is generally required, which can easily lead to unstable signals. When the length of the sensor cable needs to be extended in actual application, the lack of a cable with the required length can lead to the inability to reasonably perform secondary connection, and only cable extension by stripping and butt joint can be performed. Since the sensor cable is mostly a single-shaft shielding cable, the inner rubber layer of the cable is a conductive rubber layer, and improper stripping and connection operation on site can cause signal short circuit, poor contact and unstable signals. SUMMARY

[0003] The purpose of the present application is to solve the problems in the prior art, and to provide a shielding wire joint that can replace a cable with a suitable length without stripping and processing according to the length requirement of the connection, thereby reducing the connection failure rate and ensuring signal stability.

[0004] To achieve the above purpose, the present application provides a shielding wire joint, which comprises a shell and a connecting head. The shell is internally through and can be passed through by a cable. The connecting head comprises a center pin, an isolation layer, a joint body and a connecting post. The connecting head is connected to a sensor. The joint body is internally through. The isolation layer is cooperatively installed between the outside of the center pin and the left end inner wall of the joint body. The connecting post is cooperatively installed at the right end of the joint body. The core on the end of the cable is inserted and fixed with the right end of the center pin after passing through the connecting post, so that the signal on the core is transmitted to the sensor through the center pin. The shell and the connecting head are detachably connected, and the connecting head seals the left end of the shell after connection, so that a sealed area is formed in the shell. The joint body, the right end of the center pin and the core on the end of the cable are all located in the sealed area.

[0005] As a preferred embodiment, a protruding reverse buckle part is arranged on the outside of the joint body. A buckle interface corresponding to the reverse buckle part is arranged on the left end inner wall of the shell. The joint body and the shell are buckled with each other, and a threaded sleeve ring is screwed on the outside of the connection. The threaded sleeve ring is threadedly connected with the sensor, so that the joint body and the shell are once buckled tightly in a reverse buckle manner, and the disassembly and assembly of the joint body and the shell connected with the sensor are facilitated.

[0006] As a preferred embodiment, a dustproof rubber ring is arranged between the inner wall of the threaded sleeve ring and the outer wall of the shell, which has a certain dustproof effect.

[0007] As preferred, the shell comprises a wire sleeve, a shell body connected with the wire sleeve, the cable end is inserted from the right end of the wire sleeve, a blocking part is arranged in the middle of the wire sleeve, an open limiting cavity is formed between the inner wall of the blocking part and the outer side of the wire sleeve, the left end of the wire sleeve is inserted into the inside of the shell body, and the right end of the shell body is adaptively connected with the limiting cavity, and the outer edge of the wire sleeve and the inner wall of the shell body are tightly attached.

[0008] As preferred, an annular rubber ring mounting groove and a wrench socket are arranged on the shell body, a warning rubber ring is mounted on the annular rubber ring mounting groove, the warning rubber ring has a certain warning effect, and the wrench socket facilitates the staff to use a wrench to clamp and plug the shell body.

[0009] As preferred, a compression rubber ring is arranged between the sensor and the connector body, so that when the connector body is connected with the sensor, the compression rubber ring not only has a certain signal isolation effect, but also can effectively keep the shielding layer signal in the same docking position, and can also buffer the docking action and reduce wear.

[0010] As preferred, the outer surface of the terminal post is knurled, and the cable comprises a core wire, an inner insulating layer, a conductive rubber layer, a shielding layer and an outer insulating layer from inside to outside, the shielding layer is wrapped around the knurl on the surface of the terminal post after the end of the cable is stripped, and is compressed after a shielding wire compression sleeve is arranged on the outside, so that the stability of the shielding layer signal is ensured, the knurl can make the shielding layer fully contact with the terminal post, and the shielding wire compression sleeve can ensure the firmness of the connection between the cable and the terminal post.

[0011] As preferred, the center pin is provided with an expanded inner hole at the left end, so that the influence of thermal expansion and cold contraction on the sensor signal transmission is reduced, and the stability of the connection between the center pin and the sensor is ensured.

[0012] As preferred, the connector body is made of 59-1 brass, the center pin is made of phosphor bronze, and the surfaces of the connector body and the center pin are gold-plated, so that the transmission stability of the signal is effectively ensured and the corresponding impedance requirement is met.

[0013] As preferred, the isolation layer is a four-fluorine isolation layer and is in a hollow cylindrical shape, so that the signals between the shielding layer and the core wire are effectively isolated.

[0014] The application has the following beneficial effects: the sensor is fixedly connected with the connector, the cable is connected with the shell, the relative connection between the sensor and the cable is realized through the plug connection between the connector and the shell when docking, the connector, the sensor, the shell and the cable can be respectively made into standard accessory products, only a few cables and shell accessory products with different lengths need to be prepared, the staff can replace the cable with a suitable length according to the length requirement of the wiring without stripping the cable, the wiring failure rate is reduced and the signal stability is ensured, and the installation and replacement can be relatively convenient through plug connection.

[0015] The features and advantages of the present application will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a sectional view of an embodiment of the present application;

[0017] Figure 2 is a split schematic view of an embodiment of the present application;

[0018] Figure 3 is a housing schematic view of an embodiment of the present application;

[0019] Figure 4 is a housing front view of an embodiment of the present application;

[0020] Figure 5 is a Figure 4 A-A sectional view of an embodiment of the present application;

[0021] Figure 6 is a housing body schematic view of an embodiment of the present application;

[0022] Figure 7 is a housing body front view of an embodiment of the present application;

[0023] Figure 8 is a wire sleeve schematic view of an embodiment of the present application;

[0024] Figure 9 is a wire sleeve front view of an embodiment of the present application;

[0025] Figure 10 is a Figure 9 A-A sectional view of an embodiment of the present application;

[0026] Figure 11 is a thread sleeve schematic view of an embodiment of the present application;

[0027] Figure 12 is a cable longitudinal sectional view of an embodiment of the present application.

[0028] In the figure: 1-wire sleeve, 2-housing body, 3-thread sleeve, 4-joint body, 5-terminal post, 6-shielded wire pressing sleeve, 7-isolation layer, 8-center pin, 9-cable, 11-barrier part, 12-limiting cavity, 20-annular rubber ring installation groove, 21-warning rubber ring, 22-dustproof rubber ring, 23-wrench socket, 41-inverted buckle part, 42-pressing rubber ring, 91-conductor, 92-inner insulation layer, 93-conductive rubber layer, 94-shielding layer, 95-outer insulation layer.

DETAILED DESCRIPTION

[0029] Reference is made to Figures 1 to 12The embodiment provides a shielding wire joint, which comprises a shell, a connecting head, the shell is internally penetrated and can be used for the wire cable 9 to pass through, the connecting head comprises a center pin 8, an isolation layer 7, a joint body 4 and a terminal post 5, the connecting head is connected with a sensor, the joint body 4 is internally penetrated, the isolation layer 7 is matched and installed between the outside of the center pin 8 and the inner wall of the left end of the joint body 4, the terminal post 5 is matched and installed at the right end of the joint body 4, the lead core 91 on the end of the wire cable 9 passes through the terminal post 5 and is fixedly connected with the right end of the center pin 8, so that the signal on the lead core 91 is transmitted to the sensor through the center pin 8, the shell and the connecting head are detachably connected, and after the shell and the connecting head are connected, the connecting head seals the left end of the shell, so that a sealed area is formed in the shell, the joint body 4, the right end of the center pin 8 and the lead core 91 on the end of the wire cable 9 are all located in the sealed area, the middle part of the joint body 4 is provided with an annular protrusion, and a compression rubber ring 42 is arranged between the sensor and the left side surface of the annular protrusion.

[0030] The shell comprises a wire sleeve 1 and a shell body 2 connected with the wire sleeve 1, the end of the wire cable 9 is inserted from the right end of the wire sleeve 1, the middle part of the wire sleeve 1 is provided with a blocking part 11, an open limiting cavity 12 is formed between the inner wall of the blocking part 11 and the outside of the wire sleeve 1, the left end of the wire sleeve 1 is inserted into the inside of the shell body 2, the right end of the shell body 2 is adaptively connected with the limiting cavity 12, the outer edge of the wire sleeve 1 is tightly attached to the inner wall of the shell body 2, the left end of the shell body 2 abuts against the right side surface of the annular protrusion, and after the shell and the connecting head are connected, the connecting head seals the left end of the shell body 2, so that a sealed area is formed in the shell;

[0031] The shell body 2 is provided with an annular rubber ring mounting groove 20 and a wrench socket 23, and a warning rubber ring 21 is matched and installed on the annular rubber ring mounting groove 20.

[0032] The shell body 2 is made of hard PVC material, the wire sleeve 1 is made of soft PVC material to protect the bending and ductility of the wire cable 9, the shell body 2 and the wire sleeve 1 are bonded by glue, and the wire sleeve 1 and the shell body 2 are pressure-cast by a mold.

[0033] The outer side of the joint body 4 is provided with a protruding reverse buckling part 41, the reverse buckling part 41 is an outward protruding chamfer, the left end inner wall of the shell body 2 is provided with a buckling interface matched with the reverse buckling part 41, the joint body 4 and the shell body 2 are buckled with each other, and a threaded sleeve ring 3 is screwed outside the connection position of the joint body 4 and the shell body 2, the threaded sleeve ring 3 is threadedly connected with the sensor, the threaded sleeve ring 3 is made of ABS engineering plastic, the inner hole diameter of the threaded sleeve ring 3 is 0.15-0.25 mm smaller than the maximum outer diameter of the joint body 4, and the threaded sleeve ring 3 is pressure-cast by a mold.

[0034] A dustproof rubber ring 22 is arranged between the inner wall of the threaded sleeve ring 3 and the outer wall of the shell body 2.

[0035] The outer surface of the terminal post 5 is knurled, and the cable 9 comprises, from inside to outside, a core 91, an inner insulation layer 92, a conductive rubber layer 93, a shielding layer 94 and an outer insulation layer 95. After stripping, the shielding layer 94 of the end of the cable 9 is wrapped around the knurl on the surface of the terminal post 5 and is pressed by the shielding wire sleeve 6 on the outside.

[0036] The left end of the center pin 8 is provided with an expanded inner hole.

[0037] The joint body 4 is made of 59-1 brass, and the center pin 8 is made of phosphor bronze. The surfaces of the joint body 4 and the center pin 8 are gold-plated.

[0038] The isolation layer 7 is a four-fluorine isolation layer, and the isolation layer 7 is in the shape of a hollow cylinder.

[0039] The working process of the embodiment is as follows:

[0040] In the working process of the embodiment, during installation, the left end of the cable 9 is stripped and processed so that the core 91 is exposed. After the core 91 passes through the wire sleeve 1, it is aligned with the inner hole at the right end of the center pin 8 to complete the insertion and is pressed by the hydraulic tool. The expanded inner hole at the left end of the center pin 8 is connected to the sensor. After the left end of the cable 9 is stripped, the shielding layer 94 is wrapped around the knurl on the surface of the terminal post 5 and is pressed by the hexagonal hydraulic tool after being sleeved with the shielding wire sleeve 6 on the outside. After the cable 9 is connected to the sensor, the dustproof rubber ring 22 is sleeved on the outside of the shell body 2. The shell body 2 and the joint body 4 are connected by the reverse buckling method and are fixed together by the threaded sleeve ring 3. The shell body 2 is installed with the warning rubber ring 21 on the outside to play a certain warning role. The signal of the core 91 can be transmitted to the sensor through the center pin 8;

[0041] When a longer cable 9 is needed, the wrench socket 23 on the shell body 2 is clamped by a wrench and pulled out to the outside to separate the wire sleeve 1, the shell body 2 and the cable 9 from the connector. Then, only the cable 9 with the required length needs to be replaced. The cable 9 is connected to the shell as the first standard accessory, and the sensor is connected to the connector as the second standard accessory. The first standard accessory and the second standard accessory are compatible so that the user can replace them. When a shorter cable 9 is needed, it can be cut off.

[0042] The above embodiments are illustrative of the present application and are not limiting. Any simple transformation of the present application falls within the scope of the present application.

Claims

1. A shielded cable connector, comprising a housing and a connector, wherein the housing has an internal passage for cables to pass through, characterized in that: The connector includes a center pin, an insulating layer, a connector body, and a terminal block. The connector is connected to the sensor. The connector body is internally continuous. The insulating layer is fitted between the outer side of the center pin and the inner wall of the left end of the connector body. The terminal block is fitted to the right end of the connector body. The conductor at the end of the cable passes through the terminal block and is inserted and fixed to the right end of the center pin, so that the signal on the conductor is transmitted to the sensor through the center pin. The housing and the connector are detachably connected. After connection, the connector seals the left end of the housing, forming a sealed area inside the housing. The connector body, the right end of the center pin, and the conductor at the end of the cable are all located within the sealed area. The housing includes a cable sleeve and an outer sleeve connected to the cable sleeve. The main body of the housing has the cable end inserted from the right end of the cable sleeve. The cable sleeve has a blocking part in the middle, and an open limiting cavity is formed between the inner wall of the blocking part and the outer side of the cable sleeve. The left end of the cable sleeve is inserted into the main body of the housing, and the right end of the main body of the housing is adapted to the limiting cavity. The outer edge of the cable sleeve is in close contact with the inner wall of the main body of the housing. The outer surface of the terminal block is knurled. The cable includes, from the inside to the outside, a conductor core, an inner insulation layer, a conductive rubber layer, a shielding layer, and an outer insulation layer. After the cable end is stripped, the shielding layer is wrapped around the knurled part of the terminal block surface and a shielding wire compression sleeve is fitted on the outside and then pressed tightly. The connector body is interlocked with the housing and a threaded collar is screwed on the outside of the connection. The threaded collar is threadedly connected to the sensor.

2. The shielded cable connector as described in claim 1, characterized in that: The outer side of the connector body is provided with a protruding buckle portion, and the inner wall of the left end of the housing is provided with a buckle interface that is adapted to the buckle portion.

3. The shielded cable connector as described in claim 2, characterized in that: A dustproof rubber ring is provided between the inner wall of the threaded sleeve and the outer wall of the housing.

4. The shielded cable connector as described in claim 1, characterized in that: The outer shell body is provided with an annular rubber ring mounting groove and a wrench holder, and a warning rubber ring is installed in the annular rubber ring mounting groove.

5. The shielded cable connector as described in claim 1, characterized in that: A compression rubber ring is provided between the sensor and the connector body.

6. The shielded cable connector as described in any one of claims 1 to 5, characterized in that: The left end of the central pin has an expansion-type inner hole.

7. The shielded cable connector as described in any one of claims 1 to 5, characterized in that: The connector body is made of 59-1 brass, the center pin is made of phosphor bronze, and both the connector body and the center pin are gold-plated.

8. The shielded cable connector as described in any one of claims 1 to 5, characterized in that: The insulating layer is a PTFE insulating layer, and the insulating layer is in the shape of a hollow cylinder.

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