Signal line connector for explosion-proof housing

Abstract

The utility model provides a signal wire joint used for an explosion-proof housing, the signal wire joint is used for a signal wire cable, one end of the cable is sequentially exposed with a wire core, an insulating layer and a shielding layer from the end part to the middle part, the end part of the wire core is connected with a copper rod, the circumferential outer side of the wire core is provided with an insulating sleeve, and the insulating sleeve covers the wire core and a part of the copper rod; a copper base is arranged on the outer side of the insulation sleeve in the circumferential direction and covers the insulation sleeve and part of the insulation layer. A base is arranged on the outer side of the copper base in the circumferential direction and covers the base, the shielding layer and part of the outer skin of the cable. The end portion, located on one side of the outer skin, of the base is provided with a compression nut, after the compression nut is connected with the base, the base compresses the copper base, and the copper base compresses the insulation sleeve. According to the utility model, the miniaturization of the explosion-proof housing is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of explosion -proof, specifically, relate to a signal line joint for explosion -proof shell. BACKGROUND

[0002] In the explosion -proof place, the equipment reaches the requirement explosion -proof grade, so need to design the equipment into the explosion -proof form. For the signal line of the explosion -proof equipment, often after the internal wiring uses the explosion -proof gland to lead to the outside of the equipment shell, this wiring technology needs to reserve enough space in the shell interior for wiring operation, and the minimum specification that can reach the explosion -proof requirement is M16 currently, leads to the explosion -proof equipment unable miniaturization, and brings the trouble to the maintenance.

[0003] Therefore, the utility model provides a signal line joint for explosion -proof shell, realizes the miniaturization of explosion -proof equipment shell. UTILITY MODEL CONTENTS

[0004] In view of the defects in the prior art, the utility model aims at providing a signal line joint that can realize the miniaturization of explosion -proof equipment shell.

[0005] The utility model provides a signal line joint for explosion -proof shell for signal line cable, the one end of the cable is exposed wire core, insulating layer, shielding layer from end to middle in turn, the end of wire core is connected with copper bar, the circumferential outside of wire core is equipped with insulating sleeve, the insulating sleeve covers wire core and part copper bar, the circumferential outside of insulating sleeve is equipped with copper seat, and the copper seat covers insulating sleeve and part insulating layer, the circumferential outside of copper seat is equipped with base, and the base covers base, shielding layer and part sheath of cable, the end of base on the one side of sheath is equipped with compression nut, after the compression nut is connected with base, base compresses copper seat, and copper seat compresses insulating sleeve.

[0006] Preferably, the cable is one of a coaxial cable, a single-core cable, and a multi-core cable.

[0007] Preferably, the wire core and the copper sleeve are connected in a nested manner.

[0008] Preferably, the copper bar is provided with a spring.

[0009] Preferably, the end of the insulating sleeve is attached to the end of the insulating layer.

[0010] Preferably, the outer circumference of the copper seat is stepped, the middle section of the copper seat has the largest profile, and the side of the copper seat close to the shielding layer is embedded in the shielding layer.

[0011] Preferably, the inner side of the base is a stepped cavity, and the profile of the stepped cavity increases along the direction from the core to the outer skin.

[0012] Preferably, the outer side of the shielding layer is sleeved with a compression sleeve, and the circumferential direction of the compression sleeve is glued between the base.

[0013] Preferably, the compression nut has an external thread, the base has an internal thread, and the compression nut and the compression sleeve are further provided with a gasket and a silica gel pad.

[0014] Preferably, the compression nut, the gasket, the silica gel pad and the outer skin are provided with a bushing.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The signal line joint for the explosion-proof shell provided by the utility model is compact in structure, replaces the traditional explosion-proof gland, does not need to reserve internal space for wiring operation, realizes the miniaturization of the explosion-proof shell, can be disassembled and assembled externally without opening the explosion-proof cavity, and is convenient to install and maintain. BRIEF DESCRIPTION OF DRAWINGS

[0017] Other features, objects and advantages of the utility model will become more apparent through reading the following detailed description of the non-restrictive embodiments with reference to the accompanying drawings:

[0018] Figure 1 It is a local schematic view of the signal line joint for the explosion-proof shell of the utility model embodiment;

[0019] Figure 2 It is an assembly schematic view of the signal line joint for the explosion-proof shell of the utility model embodiment;

[0020] Figure 3 It is a finished product schematic view of the signal line joint for the explosion-proof shell of the utility model embodiment.

[0021] Wherein, 1 - signal line cable, 101 - outer skin, 102 - shielding layer, 103 - insulation layer, 104 - core, 2 - compression sleeve, 3 - copper base, 4 - insulation sleeve, 5 - copper bar, 6 - spring, 7 - compression nut, 8 - gasket, 9 - silica gel pad, 10 - bushing, 11 - base, 12 - gluing area, 13 - gasket. DETAILED DESCRIPTION

[0022] The utility model will be instructed in detail below in combination with specific embodiments. The following embodiments will help the person skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that, for the person skilled in the art, without departing from the concept of the utility model, a number of changes and improvements can be made. These all belong to the protection scope of the utility model.

[0023] The utility model provides a signal wire joint for explosion -proof housing, replaces traditional explosion -proof gland head connection mode, realizes the miniaturization of explosion -proof housing.

[0024] As Figure 1 And Figure 2 The signal wire joint for explosion -proof housing of this embodiment is used on signal wire cable 1, and the signal wire joint has universality.

[0025] To realize the production of signal wire joint, first, the end of signal wire cable 1 is stripped, and in the direction from the end to the middle, the core 104, the insulating layer 103 and the shielding layer 102 are exposed in turn, and the outer skin 101 connected with the shielding layer 102 is not stripped. In this embodiment, the core 104, the insulating layer 103 and the shielding layer 102 all have a certain length.

[0026] The implementation mode of the signal wire joint is as follows: the copper bar 5 is connected at the end of the core 104, the insulating sleeve 4 is arranged in the circumferential direction of the core 104, the insulating sleeve 4 covers the entire length of the core 104 and part of the length of the copper bar 5; the copper seat 3 is arranged in the circumferential direction of the insulating sleeve 4, the copper seat 3 covers the entire length of the insulating sleeve 4 and part of the length of the insulating layer 103; the base 11 is arranged in the circumferential direction of the copper seat 3, the base 11 covers the entire length of the copper seat 3, the entire length of the shielding layer 102 and part of the length of the outer skin 101; the compression nut 7 is arranged at the end of the base 11 on the side of the outer skin 101, the compression nut 7 is connected with the base 11 in the form of threads, after the compression nut 7 is connected with the base 11, the base 11 compresses the outer skin 101, the shielding layer 102 and the copper seat 3, the copper seat 3 further compresses the insulating layer 103, the insulating sleeve 4 and the core 104 and the copper bar 5.

[0027] The core 104 and the copper bar 5 are connected in the nested mode, and the copper bar 5 is nested into the core 104 and then compressed by the insulating sleeve 4. The spring 6 is connected to the copper bar 5, facilitating the connection with external components.

[0028] The end face of the insulating layer 103 is attached to the end face of the insulating sleeve 4, and the diameter of the insulating layer 103 is smaller than the diameter of the insulating sleeve 4. The inner circumferential direction of the copper seat 3 is in the form of steps, matching the insulating layer 103 and the insulating sleeve 4.

[0029] The outer circumference of the copper seat 3 is also stepped, and the profile of the middle part is the largest, which can be the diameter of a circular section or the side length of a square section. The small step of the copper seat 3 close to the outer skin 101 is embedded into the inner side of the shielding layer 102 and directly presses on the insulating layer 103.

[0030] In one embodiment, a compression sleeve 2 is arranged on the outer side of the insulating layer 103 and arranged on the inner side of the base 11, which covers the insulating layer 103 and part of the outer skin 101.

[0031] The internal cavity of the base 11 is stepped, and the profile of the step increases along the direction from the core 104 to the outer skin 101, specifically in three steps. The step on the outer side of the base 11 cooperates with the step on the outer side of the copper seat 3, which can compress the copper seat 3 in the axial direction of the signal cable 1.

[0032] A glueing area 12 is arranged between the compression sleeve 2 and the base 11, and glue is applied between the compression sleeve 2 and the base 11 during assembly to achieve fastening connection.

[0033] The compression nut 7 has external threads, and the base 11 has internal threads, so that the threaded segment of the compression nut 7 is embedded in the internal cavity of the base 11. Two gaskets 8 are arranged between the end of the compression nut 7 and the end of the compression sleeve 2, and a silica gel pad 9 is arranged between the two gaskets 8. The gaskets 8 and the silica gel pad 9 play a buffering role when the compression nut 7 is tightened, improving the compression effect. When the compression nut 7 is tightened, the compression nut 7 compresses the gaskets 8 and the silica gel pad 9, and then transmits the force to the compression sleeve 2 and the copper seat 3 in turn. The copper seat 3 further acts on the base 11, and the two ends of the base 11 are compressed under the action of the compression nut 7 and the copper seat 3.

[0034] A bushing 10 is further arranged on the outer skin 101 of the signal cable 1, which is arranged between the compression nut 7, the gaskets 8, the silica gel pad 9 and the outer skin 101 to protect the outer skin 101.

[0035] In other embodiments of the present application, an O-shaped gasket 13 can also be arranged at the end of the base 11, and an external nut is further connected to the outer side of the O-shaped gasket 13 to compress and protect the base 11.

[0036] The signal line joint for the explosion-proof shell according to the present application is in the state after assembly as shown in Figure 3 which has the characteristics of compact structure, can reduce the volume of the explosion-proof shell, and realizes miniaturization.

[0037] The specific embodiments of the present application are described above. It needs to be understood that the present application is not limited to the specific embodiments described above, and various changes or modifications can be made by those skilled in the art within the scope of the claims, which does not affect the essential content of the present application. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A signal line connector for an explosion-proof enclosure, used for signal cables, wherein one end of the cable exposes a wire core, an insulation layer, and a shielding layer sequentially from the end to the middle, characterized in that, A copper rod is connected to the end of the wire core. An insulating sleeve is provided on the outer circumference of the wire core, and the insulating sleeve covers the wire core and part of the copper rod. A copper seat is provided on the outer circumference of the insulating sleeve, and the copper seat covers the insulating sleeve and part of the insulating layer. A base is provided on the outer circumference of the copper seat, and the base covers the base, the shielding layer, and part of the outer sheath of the cable. A clamping nut is provided at the end of the base located on the outer sheath side. After the clamping nut is connected to the base, the base clamps the copper seat, and the copper seat clamps the insulating sleeve.

2. The signal line connector for an explosion-proof enclosure according to claim 1, characterized in that, The cable is one of the following: coaxial cable, single-core cable, or multi-core cable.

3. The signal line connector for an explosion-proof enclosure according to claim 1, characterized in that, The wire core and the copper rod are connected in a nested manner.

4. The signal line connector for an explosion-proof enclosure according to claim 3, characterized in that, The copper rod is equipped with a spring.

5. The signal line connector for an explosion-proof enclosure according to claim 1, characterized in that, The end of the insulating sleeve is attached to the end of the insulating layer.

6. The signal line connector for an explosion-proof enclosure according to claim 1, characterized in that, The outer circumference of the copper base is stepped, the middle section of the copper base has the largest profile, and the side of the copper base closest to the shielding layer is embedded in the shielding layer.

7. The signal line connector for an explosion-proof enclosure according to claim 6, characterized in that, The inner side of the base is a stepped cavity, and the contour of the stepped cavity increases along the direction from the core wire to the outer sheath.

8. The signal line connector for an explosion-proof enclosure according to claim 7, characterized in that, A compression sleeve is fitted on the outer side of the shielding layer, and the compression sleeve is glued to the base in the circumferential direction.

9. The signal line connector for an explosion-proof enclosure according to claim 8, characterized in that, The clamping nut has an external thread, the base has an internal thread, and a gasket and a silicone pad are provided between the clamping nut and the clamping sleeve.

10. The signal line connector for an explosion-proof enclosure according to claim 9, characterized in that, A bushing is provided between the clamping nut, washer, silicone pad and the outer skin.

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