Waterproof optical fiber connector and waterproof optical fiber connector

Abstract

The utility model relates to a waterproof optical fiber connector and a waterproof optical fiber connector, and relates to the technical field of connectors. A waterproof optical fiber connector comprises an optical fiber connector and an optical fiber adapter. The optical fiber connector further comprises a connecting sleeve, a sealing plug and a tail pipe. The tail pipe is in threaded connection with the connecting sleeve, the tail pipe extrudes the sealing plug when being screwed on the connecting sleeve along the threads, the sealing plug and the connecting sleeve are tightly connected, the sealing plug is extruded to deform, the inner diameter of the optical fiber channel in the sealing plug is reduced, the optical fiber in the optical fiber channel is extruded, and the optical fiber and the sealing plug are tightly connected. The waterproof optical fiber connector has the effect of providing better waterproof performance for a traditional optical fiber connector.

Description

Technical Field

[0001] The present application relates to the technical field of connectors, and in particular to a waterproof optical fiber connector. Background Art

[0002] Fiber optic connectors are devices that connect optical fibers. They precisely connect the two end faces of the fibers to maximize the coupling of light energy from the transmitting fiber to the receiving fiber while minimizing the impact of their presence on the optical link. These are the fundamental requirements of fiber optic connectors. To a certain extent, fiber optic connectors affect the reliability and performance of optical transmission systems.

[0003] Most fiber optic connectors are not suitable for outdoor use because they do not have waterproof functions. Existing waterproof fiber optic connectors usually have waterproof devices installed on the fiber optic connector and the optical fiber and the fiber optic connector are made into a prefabricated structure. However, in actual use, it is often necessary to use various fiber optic quick connectors (such as SC, FC, and LC types) to assemble the optical fiber on site. For such actual situations, it is often difficult to find a good way to provide them with good waterproof performance. Utility Model Content

[0004] In order to provide better waterproof performance for traditional optical fiber connectors, the present application provides a waterproof optical fiber connector and a waterproof optical fiber connector.

[0005] In the first aspect, the present application provides a waterproof optical fiber connector that adopts the following technical solutions:

[0006] A waterproof optical fiber connector, comprising:

[0007] A connecting sleeve, wherein a cavity is provided in the connecting sleeve and completely passes through both ends of the axial direction, and one end of the connecting sleeve is used to connect to one end of the optical fiber adapter;

[0008] a sealing plug, inserted into the other end of the connecting sleeve, and having an optical fiber channel for the optical fiber to pass through;

[0009] The tail tube is threadedly connected to one end of the connecting sleeve and squeezes the sealing plug toward the connecting sleeve. The tail tube has a through hole on the surface of the pressure cover sealing plug for the optical fiber to pass through. The sealing plug is deformed under the squeezing action of the tail tube, so that the inner diameter of the optical fiber channel is reduced.

[0010] By adopting the above technical solution, the tail pipe is threadedly connected to the connecting sleeve. When the tail pipe is screwed onto the connecting sleeve, it squeezes the sealing plug, creating a tight connection between the sealing plug and the connecting sleeve. The sealing plug is deformed by the squeezing, and the inner diameter of the optical fiber channel on the sealing plug is reduced. When the optical fiber passes through the sealing plug, the optical fiber in the optical fiber channel is squeezed, forming a tight connection between the optical fiber and the sealing plug. As a result, the connection between the sealing plug and the connecting sleeve, as well as the connection between the optical fiber and the sealing plug, are tightly connected, preventing water from seeping from the tail pipe into the connecting sleeve.

[0011] Preferably, the sealing plug has an extrusion seam, and the extrusion seam passes through the sealing plug from the optical fiber channel.

[0012] Preferably, the sealing plug includes a sealing portion, the sealing portion is in the shape of a truncated cone, and the end of the sealing portion with a smaller bottom radius is inserted into the connecting sleeve.

[0013] Preferably, the sealing plug further comprises a convex portion, which is provided at one end of the sealing portion away from the connecting sleeve, the convex portion is integrally connected to the sealing portion, and the convex portion extends from the through hole in a direction away from the sealing portion.

[0014] Preferably, the optical fiber connector further comprises a connecting rope, one end of the connecting rope is connected to the sealing plug, and the other end of the connecting rope is connected to the connecting sleeve.

[0015] Preferably, the optical fiber connector also includes a hanging rope, one end of the hanging rope has a clamping ring, the clamping ring is sleeved on the connecting sleeve, the inner wall of the clamping ring is provided with a buckle, the outer circumference of the connecting sleeve is provided with a slot for inserting the buckle, and the buckle is snapped into the slot.

[0016] Preferably, the material of the connecting lanyard is TPE.

[0017] Preferably, the material of the hanging rope is PP.

[0018] In a second aspect, the present application provides a waterproof optical fiber connector that adopts the following technical solution:

[0019] A waterproof optical fiber connector comprises a coaxially connected optical fiber adapter and an optical fiber connector, wherein the optical fiber connector is any of the waterproof optical fiber connectors described above, wherein one end of the connecting sleeve is sealedly connected to one end of the optical fiber adapter.

[0020] By adopting the above technical solution, the tail tube is threadedly connected to one end of the connector sleeve. As the tail tube is screwed onto the connector sleeve, it squeezes the sealing plug, creating a tight connection between the sealing plug and the connector sleeve. The other end of the connector sleeve is threadedly connected to the fiber adapter. Furthermore, the sealing plug is deformed by this squeezing, reducing the inner diameter of the fiber channel on the sealing plug. This squeezes the optical fiber within the channel, creating a tight connection between the optical fiber and the sealing plug. As a result, the three connections—the sealing plug and connector sleeve, the connector sleeve and fiber adapter, and the optical fiber and the sealing plug—are all tightly connected, preventing water from infiltrating the fiber connector from the outside.

[0021] Preferably, the connecting sleeve and the optical fiber adapter are threadedly connected, and a first sealing ring is provided at the connection between the connecting sleeve and the optical fiber adapter, and the first sealing ring seals the connection between the connecting sleeve and the optical fiber adapter.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] Good sealing effect and excellent waterproof performance.

[0024] The connection performance is reliable and can achieve a firm connection between the connecting sleeve and the optical fiber adapter.

[0025] Easy to install and disassemble, convenient for fixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of a waterproof optical fiber connector and a waterproof optical fiber connector in an embodiment of the present application.

[0027] Figure 2 It is an exploded schematic diagram of a waterproof optical fiber connector and a waterproof optical fiber connector in an embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the sealing plug in the embodiment of the present application.

[0029] Figure 4 It is a schematic cross-sectional structural diagram of a waterproof optical fiber connector and a waterproof optical fiber connector in an embodiment of the present application.

[0030] Figure 5 This is an exploded schematic diagram of the waterproof optical fiber connector and the waterproof optical fiber connector in another perspective in an embodiment of the present application.

[0031] Figure 6 A front view of a lanyard in an embodiment of the present application.

[0032] Explanation of the accompanying drawings: 1. Connecting sleeve; 2. Fiber optic adapter; 3. Sealing plug; 31. Fiber optic channel; 4. Tail tube; 41. Through hole; 32. Extrusion seam; 33. Sealing part; 34. Protrusion; 5. Hanging rope; 51. Connecting hanging rope; 52. Hanging hanging rope; 521. Clamp; 5211. Buckle; 11. Slot; 6. Fiber optic connector; 7. First sealing ring; 8. Second sealing ring. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-6 This application is described in further detail.

[0034] An embodiment of the present application discloses a waterproof optical fiber connector.

[0035] Reference Figure 1 and Figure 2 A waterproof optical fiber connector includes an optical fiber connector and an optical fiber adapter 2.

[0036] The optical fiber connector includes a connecting sleeve 1, a tail tube 4 and a hanging rope 5. One end of the connecting sleeve 1 is threadedly connected to the optical fiber adapter 2, and the other end of the connecting sleeve 1 is plugged with a sealing plug 3. The optical fiber adapter 2 is connected to the optical fiber connector 6, which is located in the connecting sleeve 1. The optical fiber connector 6 is constructed into an SC type in this embodiment, and can also be an LC type, FC type, etc. The optical fiber at the tail of the optical fiber connector 6 passes through the sealing plug 3 and the tail tube 4. The tail tube 4 is threadedly connected to the connecting sleeve 1 and squeezes the sealing plug 3. The sealing plug 3 is further tightened, and the optical fiber in the sealing plug 3 is also squeezed. Therefore, the connecting sleeve 1 and the optical fiber adapter 2, the sealing plug 3 and the connecting sleeve 1, and the optical fiber and the sealing plug 3 are tightly connected, preventing water from penetrating into the optical fiber connector from the outside. In addition, one end of the hanging rope 5 is connected to the sealing plug 3, and the other end is sleeved on the optical fiber adapter 2. The hanging rope 5 can limit the sealing plug 3 and the tail tube 4 from falling off from the connecting sleeve 1, and can also be used to hang the optical fiber connector.

[0037] Reference Figure 3 and Figure 4 The sealing plug 3 has a fiber channel 31 and an extrusion slit 32 for optical fibers to pass through. The fiber channel 31 is located on the central axis of the sealing plug 3 and completely extends through both axial ends of the sealing plug 3. The extrusion slit 32 extends radially from the fiber channel 31 toward the outside of the sealing plug 3 and completely extends through both axial ends of the sealing plug 3. The extrusion slit 32 connects the fiber channel 31 with the outside world, allowing optical fibers to enter the fiber channel 31 from one side of the sealing plug 3 through the extrusion slit 32.

[0038] The sealing plug 3 is divided into a sealing portion 33 and a convex portion 34 along the axial direction. The optical fiber channel 31 and the extrusion seam 32 both completely penetrate the sealing portion 33 and the convex portion 34. The sealing portion 33 is in the shape of a truncated cone, with a large bottom radius at one end and a small bottom radius at the other end, wherein the end with the small bottom radius is inserted into the connecting sleeve 1. Since the circumferential side slope of the sealing portion 33 abuts the opening of the connecting sleeve 1, when the tail pipe 4 is threadedly connected to the connecting sleeve 1 and the sealing plug 3 is squeezed toward the connecting sleeve 1, the radius of the contact surface between the sealing portion 33 and the connecting sleeve 1 will gradually increase, the elastic deformation of the sealing plug 3 will increase, and the force acting on the connecting sleeve 1 will also increase, thereby making the sealing plug 3 tightly connected to the connecting sleeve 1. At the same time, the extrusion seam 32 will also be squeezed and gradually become smaller until it closes. When the extrusion seam 32 is closed, the optical fiber is tightly connected to the sealing plug 3. The tight connection between the sealing plug 3 and the connecting sleeve 1, as well as the optical fiber and the sealing plug 3, prevents water from penetrating into the connecting sleeve 1 from the outside.

[0039] Reference Figure 1 and Figure 5 , the protrusion 34 is provided at one end of the sealing portion 33 away from the connecting sleeve 1, and the protrusion 34 is integrally connected to the sealing portion 33. The channel for the optical fiber to pass through the tail tube 4 is a through hole 41, the radius of the through hole 41 is larger than the radius of the protrusion 34 and smaller than the radius of the larger bottom surface of the sealing portion 33, and the through hole 41 can allow the optical fiber connector 6 to pass through. The protrusion 34 extends from the through hole 41. The protrusion 34 has the function of positioning the sealing plug 3, and the tail tube 4 is sleeved on the periphery of the protrusion and presses the sealing portion 33 to keep the sealing plug 3 in a direction perpendicular to the tail tube 4. Therefore, when the tail tube 4 squeezes the sealing plug 3, the surface of the protrusion 34 can be close to the tail tube 4, and the sealing portion 33 is vertically inserted into the connecting sleeve 1 along the inner wall of the connecting sleeve 1, thereby ensuring a tight fit between the sealing plug 3 and the connecting sleeve 1 and the tail tube 4.

[0040] Reference Figure 1 and Figure 6 The hanging rope 5 includes a connecting hanging rope 51 and a hanging hanging rope 52. One end of the hanging hanging rope 52 has a snap ring 521, which is mounted on the connecting sleeve 1. The inner wall of the snap ring 521 is integrally provided with a plurality of snap hooks 5211. In one embodiment, six snap hooks 5211 can be arranged symmetrically with respect to the center. The outer circumference of the connecting sleeve 1 is provided with a snap groove 11 for inserting the snap hooks 5211. The snap hooks 5211 snap into the snap groove 11 to secure the hanging hanging rope 52 to the connecting sleeve 1. The other end of the hanging hanging rope 52 is mounted on the optical fiber adapter 2. Both ends of the hanging hanging rope 52 are connected to the optical fiber connector, so that the hanging hanging rope 52 can be used to suspend the optical fiber connector.

[0041] Reference Figure 1 and Figure 5 One end of the connecting rope 51 is connected to the protrusion 34 and extends from the through hole 41, and the other end is connected to the clamping ring 521, and then connected to the connecting sleeve 1, thereby limiting the range of movement of the sealing plug 3 and the tail pipe 4 to the connecting rope 51.

[0042] Obviously, the connecting lanyard 51 and the hanging lanyard 52 can exist independently. When the connecting lanyard 51 exists independently, one end of the connecting lanyard 51 is connected to the sealing plug 3 and the other end is connected to the connecting sleeve 1, which can also prevent the sealing plug 3 and the tail pipe 4 from being removed from the connecting sleeve 1. When the hanging lanyard 52 exists independently, one end of the hanging lanyard 52 is connected to the connecting sleeve 1, and the other end can be configured as a ring, which can also achieve the purpose of suspending or fixing the optical fiber connector.

[0043] The sealing plug 3 and the connecting lanyard 51 are preferably made of TPE, which has high elasticity and resilience, high strength, and is recyclable. The connecting lanyard 51 is made of TPE, which allows for better connection to the sealing plug 3. The hanging lanyard 52 is made of PP, which ensures the stability of the connection between the clamping ring 521 and the connecting sleeve 1, while being lightweight, having high strength, and good wear resistance. The connecting lanyard 51 and the hanging lanyard 52 can be integrally formed using a two-color injection molding process.

[0044] The fiber optic connector also includes a first sealing ring 7 and a second sealing ring 8. The first sealing ring 7 is located at the junction between the connector sleeve 1 and the fiber optic adapter 2, providing a seal. The second sealing ring 8 is located at the junction between the tail pipe 4 and the connector sleeve 1, providing a seal. The sealing rings are made of a flexible, waterproof material, preferably rubber. All connections in the fiber optic connector now have sealing devices, ensuring a good seal and preventing water from penetrating the connector.

[0045] The optical fiber connector of the present embodiment is implemented as follows: When using the optical fiber connector, first unscrew the tail tube 4 from the connector sleeve 1. Then, pass the optical fiber connector 6 through the tail tube 4 and the connector sleeve 1 in sequence, exit from one end of the connector sleeve 1, and connect to the optical fiber adapter 2. The connector sleeve 1 and the optical fiber adapter 2 are then threaded together. The optical fiber at the tail of the optical fiber connector 6 is inserted into the optical fiber channel 31 through the extrusion slit 32. The optical fiber extending from the optical fiber channel 31 is then passed out through the through hole 41. The sealing plug 3 is then inserted into the other end of the connector sleeve 1, and the tail tube 4 is threadedly connected to the connector sleeve 1. Finally, the optical fiber connector is suspended or fixed using a hanging rope 52.

[0046] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A waterproof optical fiber connector, characterized in that: include: A connecting sleeve (1), wherein a cavity completely passing through both axial ends is provided in the connecting sleeve (1), and one end of the connecting sleeve (1) is used to connect to one end of the optical fiber adapter (2); A sealing plug (3), the sealing plug (3) being inserted into the other end of the connecting sleeve (1), and the sealing plug (3) being provided with an optical fiber channel (31) for the optical fiber to pass through; A tail tube (4) is threadedly connected to one end of the connecting sleeve (1) and presses the sealing plug (3) toward the connecting sleeve (1). The tail tube (4) has a through hole (41) on the surface of the gland sealing plug (3) for the optical fiber to pass through. The sealing plug (3) is deformed under the squeezing action of the tail tube (4), so that the inner diameter of the optical fiber channel (31) is reduced.

2. The waterproof optical fiber connector according to claim 1, wherein: The sealing plug (3) is provided with an extrusion seam (32), and the extrusion seam (32) penetrates the sealing plug (3) from the optical fiber channel (31).

3. The waterproof optical fiber connector according to claim 1, wherein: The sealing plug (3) comprises a sealing portion (33) having a truncated cone shape, and an end of the sealing portion (33) with a smaller bottom radius is inserted into the connecting sleeve (1).

4. The waterproof optical fiber connector according to claim 3, wherein: The sealing plug (3) further comprises a convex portion (34), the convex portion (34) being arranged at one end of the sealing portion (33) away from the connecting sleeve (1), the convex portion (34) being integrally connected to the sealing portion (33), and the convex portion (34) extending from the through hole (41) in a direction away from the sealing portion (33).

5. The waterproof optical fiber connector according to claim 1, wherein: The optical fiber connector further comprises a connecting rope (51), one end of the connecting rope (51) is connected to the sealing plug (3), and the other end of the connecting rope (51) is connected to the connecting sleeve (1).

6. The waterproof optical fiber connector according to claim 1 or 5, characterized in that: The optical fiber connector further comprises a hanging rope (52), one end of the hanging rope (52) is provided with a clamping ring (521), the clamping ring (521) is sleeved on the connecting sleeve (1), the inner wall of the clamping ring (521) is provided with a buckle (5211), the outer circumference of the connecting sleeve (1) is provided with a slot (11) for inserting the buckle (5211), and the buckle (5211) is clamped into the slot (11).

7. The waterproof optical fiber connector according to claim 5, characterized in that: The material of the connecting lanyard (51) is TPE.

8. The waterproof optical fiber connector according to claim 6, characterized in that: The material of the hanging rope (52) is PP.

9. A waterproof optical fiber connector, comprising a coaxially connected optical fiber adapter (2) and an optical fiber connector, characterized in that: The optical fiber connector is a waterproof optical fiber connector according to any one of claims 1 to 8, wherein one end of the connecting sleeve (1) is sealedly connected to one end of the optical fiber adapter (2).

10. The waterproof optical fiber connector according to claim 9, wherein: The connecting sleeve (1) and the optical fiber adapter (2) are threadedly connected, and a first sealing ring (7) is provided at the connection between the connecting sleeve (1) and the optical fiber adapter (2), and the first sealing ring (7) seals the connection between the connecting sleeve (1) and the optical fiber adapter (2).

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