CN220820299U - Waterproof joint for optical fiber connector - Google Patents

Abstract

The utility model relates to a waterproof connector for an optical fiber connector, which comprises a main body, a sealing cap and a tail sleeve, wherein the front end of the main body is provided with a plug head; the main body is internally provided with an internal channel and an insertion hole, the internal channel is used for being matched with the insertion of the optical fiber connector, and the length of the internal channel is larger than that of the standard optical fiber connector; a first step surface for limiting the optical fiber connector to be further inserted into the internal channel is formed at the joint of the internal channel and the jack; the inner wall of the jack is provided with a positioning groove for the protrusion of the outer wall of the standard optical fiber connector to pass through; the sealing cap is arranged at the front end of the main body and used for covering the plug; the tail sleeve is arranged at the rear end of the main body and used for fixing the optical cable and blocking the communication between the internal channel and the external space. The waterproof joint for the optical fiber connector, which is designed by the utility model, ensures the waterproof effect between the waterproof joint and equipment and at the front end and the rear end of the joint, avoids the invasion of moisture and improves the waterproof performance while realizing the connection between the optical fiber connector and external equipment.

Description

Waterproof joint for optical fiber connector

Technical Field

The utility model relates to the technical field of optical fiber connection, in particular to a waterproof connector for an optical fiber connector.

Background

In the prior art, with the rapid development of optical communication technology, optical fiber networks have become the dominant transmission medium in current communication systems. Fiber optic connectors are used in large numbers in fiber optic networks to make connections between optical fibers. However, the conventional optical fiber connector has a problem in that it is inferior in waterproof performance in practical use.

Because the fiber optic connector is designed to operate in an outdoor environment where the climate is complex, erosion of equipment by rain, dirt, etc. often occurs. Many existing fiber optic connector products are designed with importance on functions, neglecting waterproof performance, and are usually directly connected with external equipment without considering waterproof hierarchical relationship, and when the fiber optic connector products are exposed in a humid environment for a long time, the gaps are extremely easy to store impurities such as moisture, dust and the like. The penetration of moisture can cause shorting and corrosion of the internal circuitry of the connector; dust accumulation can also reduce the connection quality. All of which can severely impact the performance of the fiber optic communications link.

Disclosure of Invention

In order to solve the problems, the utility model provides the waterproof joint for the optical fiber connector, which has the advantages of simple structure, low cost and good adaptability.

In order to achieve the above purpose, the waterproof connector for the optical fiber connector comprises a main body, a sealing cap and a tail sleeve, wherein the front end of the main body is provided with a plug head which is of a hollow structure and has an external shape capable of being matched with an interface of external equipment; the main body is internally provided with an internal channel and an insertion hole, the internal channel is used for being matched with the insertion of the optical fiber connector, and the length of the internal channel is larger than that of the optical fiber connector with standard specification; the inner channel is communicated with the interior of the plug head through the jack, and a first step surface for limiting the optical fiber connector to be further inserted into the inner channel is formed at the joint of the inner channel and the jack; a positioning groove for the protrusion of the outer wall of the standard optical fiber connector to pass through is formed in the inner wall of the jack; the sealing cap is arranged at the front end of the main body and is used for covering the plug; the tail sleeve is arranged at the rear end of the main body and used for fixing the optical cable and blocking the communication between the internal channel and the external space.

In order to achieve good sealing effect, the sealing cap is sleeved at the front end of the main body, a first sealing ring is arranged between the sealing cap and the main body, and the sealing cap and the main body form sealing fit through the first sealing ring.

In order to meet the assembly and disassembly requirements of waterproof performance and structure, the front end of the main body is provided with a connecting mechanism for fixing the sealing cap, and the connecting mechanism is one of a clamping structure or a threaded connection structure and is used for realizing quick assembly and disassembly with the sealing cap.

In order to realize the dismouting demand of tail cover, be equipped with the line hole that supplies the optical cable to pass on the tail cover, the main part afterbody is equipped with first external screw thread portion, first external screw thread portion is equipped with the second sealing washer with main part junction, tail cover front end inner wall be equipped with the internal thread of first external screw thread portion looks adaptation, the tail cover forms sealed cooperation with main part through first external screw thread portion and main part threaded connection and through the second sealing washer.

In order to realize the good sealed effect of tail cover, the tail cover still includes sealing member and rubber head, the sealing member is hollow structure, and sealing member front end inner wall be equipped with the internal thread of first external screw thread portion looks adaptation, the rear end be equipped with the second external screw thread portion of tail cover front end inner wall internal screw thread looks adaptation, second external screw thread portion is opposite to the one end ring of sealing member and is equipped with a plurality of strip teeth, the rubber head is located between a plurality of strip teeth, be equipped with the line hole that supplies the optical cable to pass on the rubber head, the tail cover has to be the cone portion that expands the trend outward to main part direction of inserting, cone portion offsets with strip tooth, sealing member forms sealing fit through first external screw thread portion and main part threaded connection and through second sealing washer and main part, the tail cover forms sealing fit through second external screw thread portion and sealing member threaded connection and through rubber head and sealing member.

In order to provide a positioning and screwing stop point for the sealing element, a second step surface is formed at the joint of the main body and the first external thread part, and when the sealing element is in threaded connection with the main body, the front end of the sealing element abuts against the second step surface.

In order to facilitate the screwing operation, the outer peripheral surfaces of the sealing piece and the tail sleeve are at least partially concavely provided with a holding part.

In order to prevent the sealing cap from losing, the sealing cap further comprises a hanging rope, and the front end of the sealing cap is connected with the main body through the hanging rope.

For ease of manufacture, the body is of cylindrical construction.

The waterproof connector for the optical fiber connector, which is designed by the utility model, has the advantages that the connection between the optical fiber connector and external equipment is realized by arranging the structures such as the plug head, the internal channel, the positioning groove, the sealing cap and the tail sleeve, the waterproof effect between the waterproof connector and the equipment and at the front end and the rear end of the connector is ensured, the invasion of moisture is avoided, and the waterproof performance is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the connecting mechanism in embodiment 1;

FIG. 3 is a schematic view of another embodiment of the connecting mechanism in embodiment 1;

FIG. 4 is a schematic view of the installation of a fiber optic connector of example 1;

fig. 5 is a schematic diagram of the structure of the positioning slot in embodiment 1.

Wherein: the device comprises a main body 1, an inner channel 11, an insertion hole 12, a first step surface 13, a positioning groove 14, a first external thread part 15, a second step surface 16, a sealing cap 2, a tail sleeve 3, a sealing piece 31, a second external thread part 311, strip teeth 312, a rubber head 32, a cone part 33, a plug head 4, a first sealing ring 5, a connecting mechanism 6, a second sealing ring 7, a holding part 8 and a hanging rope 9.

Detailed Description

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

Example 1

As shown in fig. 1 to 5, the waterproof connector for an optical fiber connector described in this embodiment includes a main body 1, a sealing cap 2 and a tail sleeve 3, wherein a plug head 4 is provided at the front end of the main body 1, and the plug head 4 has a hollow structure and an external shape capable of being matched with an interface of an external device; an internal channel 11 and an insertion hole 12 are arranged in the main body 1, the internal channel 11 is used for being matched with the insertion of the optical fiber connector, and the length of the internal channel 11 is larger than that of the standard optical fiber connector; the inner channel 11 is communicated with the interior of the plug head 4 through the jack 12, and a first step surface 13 for limiting the optical fiber connector to be further inserted into the inner channel 11 is formed at the joint of the inner channel 11 and the jack 12; the inner wall of the jack 12 is provided with a positioning groove 14 for the protrusion of the outer wall of the standard optical fiber connector to pass through; the sealing cap 2 is arranged at the front end of the main body 1 and is used for covering the plug head 4; the tail sleeve 3 is arranged at the rear end of the main body 1 and is used for fixing an optical cable and blocking the communication between the internal channel 11 and the external space. In the present embodiment, the internal passage 11 is configured to mate with a corresponding standard-sized optical fiber connector, for example, as shown in fig. 4, the optical fiber connector is configured to have an SC type, however, as will be apparent to those of ordinary skill in the art given the present description, optical fiber connectors having other standard formats, such as ST, FC, and LC connectors, may also be provided. As shown in fig. 1, 4 and 5, taking the SC-type optical fiber connector as an example, when the SC-type optical fiber connector is installed on site, the sealing cap 2 is removed, the outer frame sleeve of the SC-type optical fiber connector joint part connected with the optical fiber connector is removed, the connector can be inserted into the internal channel 11, then the protrusions 100 (the protruding parts for clamping and fixing the outer frame sleeve) on two sides of the SC-type optical fiber connector joint part are aligned with the positioning grooves 14 and inserted into the internal channel 11, positioning indication provided by the positioning grooves 14 is utilized, the connector can be ensured to be correctly inserted into the internal channel 11 until the front end face of the SC-type optical fiber connector body part abuts against the first step face 13, so that the joint part of the SC-type optical fiber connector cannot be continuously moved forward, damage caused by excessive insertion is avoided, at this moment, the joint part of the SC-type optical fiber connector extends out of the jack 12 and is placed inside the plug 4, and then the plug 4 is pushed into alignment with the external device interface until the device interface contacts with the front end face of the SC-type optical fiber connector joint part, so that mechanical connection is completed, the SC-type optical fiber connector can be realized through the waterproof connection with the waterproof connector, the waterproof communication between the device and the waterproof communication device, the waterproof device is ensured, the outdoor environment is guaranteed, the waterproof environment is guaranteed, and the outdoor environment is reliably, and the outdoor, and the environment is well, 3, and the environment is reliably, and the environment is well.

In some embodiments, as shown in fig. 1 and fig. 2, in order to achieve a good sealing effect, the sealing cap 2 is sleeved at the front end of the main body 1, and a first sealing ring 5 is disposed between the sealing cap 2 and the main body 1, and the sealing cap 2 forms a sealing fit with the main body 1 through the first sealing ring 5. The sealing cap 2 is sleeved at the front end of the main body 1, the first sealing ring 5 is clamped and deformed by the sealing cap 2 to fill a gap between the main body 1 and the sealing cap 2, so that an airtight effect between the sealing cap and the main body is realized, a sealing function is realized, and external moisture and dust are prevented from entering the inside of the joint through the gap when the joint is not in use.

In some embodiments, as shown in fig. 2 and fig. 3, in order to satisfy the requirements of the waterproof performance and the disassembly and assembly of the structure, a connection mechanism 6 for fixing the sealing cap 2 is provided at the front end of the main body 1, and the connection mechanism 6 is one of a clamping structure (fig. 2) or a threaded connection structure (fig. 3) and is used for realizing the rapid disassembly and assembly with the sealing cap 2. Quick assembly disassembly can be realized through coupling mechanism 6 to satisfy the user demand of actual operation process, need not extra instrument and can dismouting, it is very convenient to use.

In some embodiments, as shown in fig. 2 and fig. 3, the tail sleeve 3 is provided with a wire hole through which the optical cable passes, the tail of the main body 1 is provided with a first external thread portion 15, a second sealing ring 7 is arranged at the joint of the first external thread portion 15 and the main body 1, the inner wall of the front end of the tail sleeve 3 is provided with an internal thread matched with the first external thread portion 15, and the tail sleeve 3 is in threaded connection with the main body 1 through the first external thread portion 15 and forms a sealing fit with the main body 1 through the second sealing ring 7. In this way, the wire hole realizes the smooth passing of the optical cable, the threaded connection realizes the reliable mechanical connection of the tail sleeve 3 and the main body 1, and the airtight effect between the tail sleeve 3 and the main body 1 is realized through the second sealing ring 7, on one hand, the outside moisture and dust are prevented from entering the inside of the joint from the rear end, on the other hand, the functions of tensioning and fixing the optical cable are realized, the stable and reliable optical fiber transmission is ensured,

In some embodiments, as shown in fig. 1, fig. 2 and fig. 3, in order to achieve a good sealing effect of the tail sleeve, the tail sleeve 3 further includes a sealing element 31 and a rubber head 32, the sealing element 31 is of a hollow structure, an inner wall at a front end of the sealing element 31 is provided with an inner thread matched with the first outer thread portion 15, a rear end of the sealing element is provided with a second outer thread portion 311 matched with the inner thread at the front end of the tail sleeve 3, one end of the second outer thread portion 311 opposite to the sealing element 31 is annularly provided with a plurality of strip teeth 312, the rubber head 32 is arranged among the plurality of strip teeth 312, a wire hole for an optical cable to pass through is formed in the rubber head 32, the tail sleeve 3 has a cone portion 33 which has an outward expanding trend toward an insertion direction of the main body 1, the cone portion 33 abuts against the strip teeth 312, the sealing element 31 is in threaded connection with the main body 1 through the first outer thread portion 15 and forms sealing fit with the main body 1 through the second sealing ring 7, and the tail sleeve 3 is in threaded connection with the sealing element 31 through the second outer thread portion 311 and forms sealing fit with the sealing element 31 through the rubber head 32. The sealing element 31 can be reliably and mechanically connected with the first external thread part 15 of the main body 1 through threads, and sealing is realized through the second sealing ring 7, the sealing element 31 is hollow in design, a plurality of strip teeth 312 are arranged at the tail end ring of the sealing element, the rubber head 32 is arranged between the strip teeth 312, the rubber head 32 is made of a flexible material, a wire hole for an optical cable to pass through is formed in the rubber head 32, when the tail sleeve 3 is in threaded connection with the sealing element 31 through the second external thread part 311, the rubber head 32 is stressed to deform and squeeze the optical cable passing through the wire hole on the rubber head under the action of the cone part 33 and the strip teeth 312, so that the protection level is increased, and liquid and particles are further prevented from penetrating into the joint.

In some embodiments, as shown in fig. 2 and 3, in order to provide a positioning tightening stop point for the seal member 31, a second step surface 16 is formed at the connection position of the main body 1 and the first external thread portion 15, and when the seal member 31 is in threaded connection with the main body 1, the front end of the seal member 31 abuts against the second step surface 16. The presence of the second step surface 16 provides a positive indication and stop for the tightening process of the seal 31, helps to achieve a consistent tightening force, and avoids problems caused by over tightening, thereby improving reliability and long-term stability of the seal.

In some embodiments, as shown in fig. 2 and 3, the seal member 31 and the peripheral surface of the boot 3 are at least partially recessed to form a grip portion 8. Such a design makes the tightening operation more convenient, since the operator can better grasp the grip portion 8 with his fingers and apply the required torque without slipping or slipping.

In some embodiments, as shown in fig. 1 and 2, in order to prevent the sealing cap 2 from being lost, a hanging rope 9 is further included, and the front end of the sealing cap 2 is connected with the main body 1 through the hanging rope 9.

In some embodiments, the body 1 is a cylindrical structure. The manufacture of the cylinder may be more efficient in terms of machining, shaping, machining processes, etc., than complex shapes, such as angular or profiled structures. This contributes to a reduction in manufacturing cost and an improvement in production efficiency.

The waterproof joint for the optical fiber connector provided by the embodiment realizes connection of the optical fiber connector and external equipment by arranging the structures such as the plug head, the internal channel, the positioning groove, the sealing cap and the tail sleeve, ensures waterproof effect between the waterproof joint and the equipment and at the front end and the rear end of the joint, avoids invasion of moisture and improves waterproof performance.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (9)

1. The waterproof connector for the optical fiber connector comprises a main body (1), a sealing cap (2) and a tail sleeve (3), and is characterized in that an inserting head (4) is arranged at the front end of the main body (1), and the inserting head (4) is of a hollow structure and has an external shape capable of being matched with an interface of external equipment; an inner channel (11) and an insertion hole (12) are formed in the main body (1), the inner channel (11) is used for being matched with the insertion of the optical fiber connector, and the length of the inner channel (11) is larger than that of the standard optical fiber connector; the internal channel (11) is communicated with the interior of the plug head (4) through the jack (12), and a first step surface (13) for limiting the optical fiber connector to be further inserted into the internal channel (11) is formed at the joint of the internal channel (11) and the jack (12); a positioning groove (14) for the protrusion of the outer wall of the standard optical fiber connector to pass through is formed in the inner wall of the jack (12); the sealing cap (2) is arranged at the front end of the main body (1) and is used for covering the plug head (4); the tail sleeve (3) is arranged at the rear end of the main body (1) and is used for fixing an optical cable and blocking the communication between the inner channel (11) and an external space.

2. The waterproof joint for the optical fiber connector according to claim 1, wherein the sealing cap (2) is sleeved at the front end of the main body (1), a first sealing ring (5) is arranged between the sealing cap and the main body, and the sealing cap (2) is in sealing fit with the main body (1) through the first sealing ring (5).

3. The waterproof joint for the optical fiber connector according to claim 2, wherein a connecting mechanism (6) for fixing the sealing cap (2) is arranged at the front end of the main body (1), and the connecting mechanism (6) is one of a clamping structure or a threaded connection structure and is used for realizing quick assembly and disassembly with the sealing cap (2).

4. The waterproof joint for the optical fiber connector according to claim 1, wherein the tail sleeve (3) is provided with a wire hole for an optical cable to pass through, the tail part of the main body (1) is provided with a first external thread part (15), a second sealing ring (7) is arranged at the joint of the first external thread part (15) and the main body (1), the inner wall of the front end of the tail sleeve (3) is provided with an internal thread matched with the first external thread part (15), and the tail sleeve (3) is in threaded connection with the main body (1) through the first external thread part (15) and forms sealing fit with the main body (1) through the second sealing ring (7).

5. The waterproof joint for an optical fiber connector according to claim 4, wherein the tail sleeve (3) further comprises a sealing element (31) and a rubber head (32), the sealing element (31) is of a hollow structure, the inner wall of the front end of the sealing element (31) is provided with an inner thread matched with the first outer thread part (15), the rear end of the sealing element (31) is provided with a second outer thread part (311) matched with the inner thread of the front end of the tail sleeve (3), one end, opposite to the sealing element (31), of the second outer thread part (311) is provided with a plurality of strip-shaped teeth (312) in a ring mode, the rubber head (32) is arranged among the plurality of strip-shaped teeth (312), the rubber head (32) is provided with a wire hole for an optical cable to pass through, the tail sleeve (3) is provided with a conical part (33) which is outwards expanded in the insertion direction of the main body (1), the conical part (33) is in threaded connection with the main body (1) through the first outer thread part (15) and is in butt joint with the main body (1) through the second outer thread part (7), and the sealing element (31) is in butt joint with the sealing element (31) through the second outer thread part (31) and the sealing element (31) in butt joint.

6. The waterproof joint for an optical fiber connector according to claim 5, wherein a second stepped surface (16) is formed at a junction of the main body (1) and the first externally threaded portion (15), and when the sealing member (31) is screwed to the main body (1), a front end of the sealing member (31) abuts against the second stepped surface (16).

7. The waterproof joint for an optical fiber connector according to claim 5, wherein the sealing member (31) and the outer peripheral surface of the boot (3) are formed with a grip portion (8) at least partially recessed.

8. The waterproof joint for an optical fiber connector according to claim 1, further comprising a hanging rope (9), wherein the front end of the sealing cap (2) is connected with the main body (1) through the hanging rope (9).

9. The waterproof joint for an optical fiber connector according to claim 1, wherein the main body (1) is of a cylindrical structure.