Mining optical fiber cable connector and two-core optical fiber patch cord

Abstract

The embodiment of the utility model relates to the technical field of connectors, and discloses a mining optical fiber cable connector. The device comprises an optical fiber jack fixing seat; the ceramic sleeve and the optical fiber spring fixing plate are arranged in the optical fiber jack fixing seat and are sequentially arranged along the axis direction; the connecting thread sleeve has a preset axial length, and a first end of the connecting thread sleeve is in threaded connection with a second end face of the optical fiber jack fixing seat; the locking nut is in threaded connection with the second end of the connecting screw sleeve; the locking nut is used for locking and fixing the position of the optical fiber spring fixing plate; the connecting nut is sleeved on the optical fiber jack fixing seat, and an annular gap is formed between the connecting nut and the optical fiber jack fixing seat; wherein the peripheral surface of the optical fiber jack fixing seat is provided with a concave key groove extending along the axis direction, and the concave key groove guides the insertion direction of the matched plug-in when the plug-in is inserted into the annular gap.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a mining optical fiber cable connector and a two-core optical fiber jumper wire. Background Technique

[0002] At present, when using optical cables for data transmission in coal mines, the optical cables are easily broken due to the complex underground environment. Therefore, optical fibers are usually added to mining cables to enable effective protection, thus forming a structure of mining optical and electrical composite cables.

[0003] However, when the mining optical and electrical composite cable is connected to equipment, a large wiring cavity is required. To save space, the equipment to be connected usually installs a mining flameproof cable connector to replace the wiring cavity. However, the existing mining flameproof cable connectors cannot perform optical fiber transmission and are difficult to meet the connection requirements of mining optical and electrical composite cables. Summary of the Invention

[0004] The mining optical fiber cable connector and the two-core optical fiber jumper wire provided by the utility model aim to solve the defect that the existing mining optical and electrical composite cable and equipment cannot be quickly connected.

[0005] In a first aspect, the utility model provides a mining optical fiber cable connector. The mining optical fiber cable connector includes: a fiber jack fixing seat; a ceramic sleeve and a fiber spring fixing plate which are arranged inside the fiber jack fixing seat in sequence along the axial direction; wherein, the ceramic sleeve is close to the first end face and is used for fixing the fiber ferrule and auxiliary guiding; the fiber spring fixing plate is close to the second end face and is used for fixing the optical fiber and providing elastic buffering; a connecting sleeve; the connecting sleeve has a preset axial length, and the first end of the connecting sleeve is threadedly connected with the second end face of the fiber jack fixing seat; a locking nut; the locking nut is threadedly connected with the second end of the connecting sleeve; the locking nut is used for locking and fixing the position of the fiber spring fixing plate; a connecting nut; the connecting nut is sleeved on the fiber jack fixing seat, and an annular gap is formed between the connecting nut and the fiber jack fixing seat; wherein, a concave key groove extending along the axial direction is arranged on the outer peripheral surface of the fiber jack fixing seat to guide the insertion direction when a mating plug is inserted into the annular gap.

[0006] Optionally, a plurality of concave annular grooves are arranged on the circumferential end face of the connecting nut.

[0007] Optionally, it further includes: a dust cover; the dust cover is connected to the two-core LC optical fiber jumper wire through a flexible connecting wire.

[0008] Optionally, it further includes: an O-ring; wherein, an outer peripheral surface of the optical fiber jack fixing seat is provided with a protruding annular flange; the annular flange extends along a circumferential direction of the optical fiber jack fixing seat; the O-ring is arranged on the annular flange of the optical fiber jack fixing seat.

[0009] Optionally, the flange and a first end of the connecting sleeve form a fixing groove; an inner surface of the connecting nut is provided with a limiting protrusion adapted to the fixing groove; wherein, the limiting protrusion is received in the fixing groove so that the connecting nut is restricted in the fixing groove and rotates around an axis direction.

[0010] Optionally, the connecting nut is an M16X1 nut; the connecting nut, the optical fiber jack fixing seat, the locking nut and the connecting sleeve are all made of stainless steel; the spring fixing plate is made of nylon material.

[0011] In a second aspect, an embodiment of the present invention provides a two-core optical fiber jumper. The two-core optical fiber jumper includes: two of the above-mentioned mine optical fiber cable connectors; and a two-core optical fiber cable; wherein, two ends of the two-core optical fiber cable respectively have optical fiber ferrules; the two mine optical fiber cable connectors are respectively fixedly arranged at two ends of the two-core optical fiber cable.

[0012] The beneficial effects of the mine optical fiber cable connector and the two-core optical fiber jumper provided by the embodiment of the present invention are: while realizing the rapid connection between the mine photoelectric composite cable and the device, effectively saving space, the user only needs to manually rotate the mounting nut to connect the connector to the socket, which is convenient and fast to operate and improves work efficiency. Description of the Drawings

[0013] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, unless otherwise stated, and the drawings in the figures do not constitute a proportional limitation.

[0014] Figure 1 is a cross-sectional view of the mine optical fiber cable connector according to an embodiment of the present invention.

[0015] Figure 2 is a schematic diagram of a connection end face of the mine optical fiber cable connector according to an embodiment of the present invention.

[0016] Figure 3 is a schematic diagram of the two-core optical fiber jumper according to an embodiment of the present invention. Detailed Embodiments

[0017] The present utility model will be described in detail below with reference to specific embodiments. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present utility model.

[0018] It should be noted that unless otherwise clearly specified and defined, the terms "center", "longitudinal", "lateral", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are 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 thus cannot be construed as a limitation of the present utility model. The terms "installation", "connection", "connection", "fixation", etc. 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. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features; the meaning of "multiple" is two or more; "and / or" includes any and all combinations of one or more of the related listed items. 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 circumstances.

[0019] Figure 1 This is a mining optical fiber cable connector provided by an embodiment of the present utility model. Figure 2 This is a schematic diagram of the connection end face of the mining optical fiber cable connector provided by an embodiment of the present utility model. As Figure 1 and Figure 2 shown, the mining optical fiber cable connector includes: an optical fiber jack fixing seat 11, a ceramic sleeve 12, an optical fiber spring fixing plate 13, a connection sleeve 14, a locking nut 15, and a connection nut 16.

[0020] Among them, the optical fiber jack fixing seat 11 can be a columnar structure approximately in the shape of a cylinder. Inside it, a ceramic sleeve 11 and an optical fiber spring fixing plate 12 are sequentially arranged along the axial direction.

[0021] The ceramic sleeve 11 is close to the first end face of the optical fiber jack fixing seat 11 and can be used to fix the optical fiber ferrule and assist in guiding, while the optical fiber spring fixing plate 13 is close to the second end face of the optical fiber jack fixing seat 11 and can be used to fix the optical fiber and provide elastic buffering.

[0022] The connecting sleeve 14 is a sleeve with a preset axial length, having a first end and a second end that are away from each other. The first end of the connecting sleeve 14 is threadedly connected to the second end face of the optical fiber jack fixing base 11. And the locking nut 15 is threadedly connected to the second end of the connecting sleeve 14.

[0023] Specifically, the optical fiber cable sequentially passes through the locking nut 15 and the connecting sleeve 14 and is fixed on the optical fiber jack fixing base 11. The optical fiber cable is mainly fixed and elastically buffered by the optical fiber spring fixing plate 13. The optical fiber ferrule formed by the extension of the end of the optical fiber cable is fixed by the ceramic sleeve 12. For example, for a two-core optical fiber, two plug-in ends as shown in Figure 2 can be formed.

[0024] The connecting nut 16 is sleeved on the optical fiber jack fixing base 11, and an annular gap is formed between it and the optical fiber jack fixing base 11, which can be inserted by the plug of the socket, so as to fix the connector and the socket. The outer peripheral surface of the optical fiber jack fixing base 11 is provided with concave key grooves extending in the axial direction. These concave key grooves can play a guiding role to guide the mating plug to be inserted into the annular gap in the correct direction to ensure the correct connection of the connector.

[0025] Preferably, as shown in Figure 3 , a plurality of concave annular grooves 17 are provided on the circumferential end face of the connecting nut 16. These concave annular grooves 17 can increase the friction when the user's hand touches, which is convenient for the user to apply force and screw the connecting nut 16.

[0026] Specifically, the connector further includes: an O-ring 19. Correspondingly, a protruding annular flange 18 is provided on the outer peripheral surface of the optical fiber jack fixing base. The annular flange 18 is a component extending along the circumferential direction of the optical fiber jack fixing base 11 and forms a step on the outer peripheral surface. The additionally provided O-ring 19 can be fixed on the annular flange 18 of the optical fiber jack fixing base as a connection buffer between the plug of the socket and the connector, providing appropriate elastic force to ensure the tight connection between the socket and the connector.

[0027] More specifically, a fixing groove with a certain width can be formed between the annular flange 18 and the first end of the connecting sleeve 14. Correspondingly, a limiting protrusion 24 adapted to the fixing groove is provided on the inner surface of the connecting nut 16.

[0028] Among them, the limiting protrusion 20 is received in the fixing groove so that the connecting nut 16 is restricted in the fixing groove and can only have a limited linear displacement in the axial direction and can rotate around the axial direction.

[0029] In the actual use process, first align the connector and insert it into the socket, and then by screwing the connection nut 16, through the threaded connection method, convert it into a linear motion between the socket and the connector, so that the socket gradually inserts into the annular gap of the connector until it abuts against the O-ring. Then, lock the nut 15 through the knob, squeeze and fix the remaining components, and lock and fix them in a stable position to ensure the stability of the optical fiber connection.

[0030] Preferably, please continue to refer to Figure 1 and Figure 3 , the connector may further include: a dust cover 21. Wherein, the dust cover 22 can be connected to the optical fiber cable through a flexible connecting line 23 and hung on the optical fiber cable.

[0031] Specifically, the above-mentioned connection nut is an M16X1 nut. The connection nut, the optical fiber jack fixing seat, the locking nut and the connection sleeve are all made of stainless steel. The spring fixing plate is made of nylon material.

[0032] Based on the connector provided in the above embodiment, the present invention further provides a two-core optical fiber jumper. As Figure 3 shown, the two-core optical fiber jumper includes: two above-mentioned mining optical fiber cable connectors 1 and a two-core optical fiber cable 2.

[0033] Wherein, the two mining optical fiber cable connectors 1 are respectively fixedly arranged at both ends of the two-core optical fiber cable 2, thereby forming a two-core optical fiber jumper, which can be used to realize the optical fiber signal transmission between two devices.

[0034] Preferably, the two-core optical fiber cable 2 can use an armored sheath to provide additional mechanical protection so that it can be applicable to environments with high strength and durability.

[0035] The above content is a further detailed description of the present invention in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A mining optical fiber cable connector, characterized in that: include: Optical fiber jack fixing seat; A ceramic sleeve and an optical fiber spring fixing plate are arranged inside the optical fiber jack fixing seat and are arranged in sequence along the axial direction; The ceramic sleeve is close to the first end face and is used to fix the optical fiber ferrule and assist in guiding; the optical fiber spring fixing plate is close to the second end face and is used to fix the optical fiber and provide elastic buffering; A connecting screw sleeve; the connecting screw sleeve has a preset axial length, and the first end of the connecting screw sleeve is threadedly connected to the second end surface of the optical fiber jack fixing seat; Locking nut; the locking nut is threadedly connected to the second end of the connecting nut; the locking nut is used to lock and fix the position of the optical fiber spring fixing plate; Connecting nut; the connecting nut is sleeved on the optical fiber jack fixing seat, and an annular gap is formed between the connecting nut and the optical fiber jack fixing seat; Wherein, the outer peripheral surface of the optical fiber jack fixing seat is provided with a concave keyway extending along the axial direction to guide the insertion direction of the matching plug-in when it is inserted into the annular gap.

2. The optical fiber cable connector for mining according to claim 1, characterized in that: The circumferential end surface of the connecting nut is provided with a plurality of concave annular grooves.

3. The optical fiber cable connector for mining according to claim 1, characterized in that: Also includes: Dust cover; the dust cover is connected to the optical fiber cable through a flexible connecting line.

4. The optical fiber cable connector for mining according to claim 1, characterized in that: Also includes: O-rings; Wherein, the outer peripheral surface of the optical fiber jack fixing seat is provided with a protruding annular flange; the annular flange extends along the circumferential direction of the optical fiber jack fixing seat; The O-ring is arranged on the annular flange of the optical fiber jack fixing seat.

5. The optical fiber cable connector for mining according to claim 4, characterized in that: The annular flange and the first end of the connecting nut form a fixing groove; the inner surface of the connecting nut is provided with a limiting protrusion adapted to the fixing groove; Wherein, the limiting protrusion is accommodated in the fixing groove, so that the connecting nut is restricted in the fixing groove and rotates around the axis direction.

6. The optical fiber cable connector for mining according to claim 1, characterized in that: The connecting nut is an M16X1 nut; the connecting nut, the optical fiber jack fixing seat, the locking nut and the connecting nut sleeve are all made of stainless steel; the spring fixing plate is made of nylon material.

7. A two-core optical fiber jumper, characterized in that: include: Two optical fiber cable connectors for mining according to any one of claims 1 to 6; as well as Two-core fiber optic cable; Wherein, both ends of the two-core optical fiber cable are provided with optical fiber inserts respectively; and the two optical fiber cable connectors for mining are respectively fixedly arranged at the two ends of the two-core optical fiber cable.

Images