Waterproof sealed optical fiber connector

Abstract

The utility model provides a waterproof sealed optical fiber connector. The waterproof sealed optical fiber connector comprises a retainer, a cylindrical mounting part, an O-shaped sealing ring, a spring, a mounting box and a shell, the connecting flange and the spring are arranged on the peripheral surface of the mounting part, and one end of the retainer applies extrusion force towards one side of the connecting flange to the spring, so that the O-shaped sealing ring is extruded and attached to the end surface of one side of the connecting flange by the connecting sheet on the spring; the O-shaped sealing ring is deformed along the radial direction of the O-shaped sealing ring, so that the inner wall and the outer wall of the O-shaped sealing ring are more tightly attached to the peripheral surface of the optical fiber and the inner wall of the mounting box, gaps are prevented from being generated between the O-shaped sealing ring and the optical fiber as well as between the O-shaped sealing ring and the mounting box, and the O-shaped sealing ring can be tightly attached to the end surface of the side surface of the connecting flange. Therefore, external rainwater is blocked on one side of the O-shaped sealing ring and is difficult to flow into the indoor side through the optical fiber, and a good waterproof sealing effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber equipment technology, and specifically to a waterproof and sealed optical fiber connector. Background Technology

[0002] Fiber optic connectors are detachable devices used to achieve fast and precise mating between optical fibers, and are widely used in optical communication systems. Through precise structural design, they ensure efficient transmission of optical signals between fibers, while also featuring reusable mating and low-loss characteristics.

[0003] Typically, fiber optic cables are installed in buildings such as public residences and high-rises to transmit optical signals for communication within the building. If fiber optic cables are to be laid in aging or completed buildings, the building's internal design needs to be altered. This requires drilling holes in the building's exterior walls to allow the fiber optic cables to be routed inside.

[0004] To prevent damage to the optical fiber during its introduction, a fiber optic connector is installed at the fiber optic joint. Since the externally introduced fiber optic cable is outdoors, it needs to be waterproofed to prevent rainwater from flowing into the indoor fiber optic connection equipment. In existing technology, waterproofing measures typically involve installing a sealing ring at the fiber optic inlet of the fiber optic connection device's housing. The external fiber optic cable passes through the sealing ring into the fiber optic connector. During installation, the upper and lower housings of the fiber optic connector interlock to press the sealing ring tightly against the outer surface of the fiber optic cable, preventing rainwater from flowing into the room. However, because the sealing ring is O-ring, during installation using the interlocking method, the left and right ends of the O-ring, which are under pressure, tend to bulge outwards and deform. This causes the inner wall of the O-ring on both sides to detach from the outer surface of the fiber optic cable, creating gaps. Rainwater can easily flow into the room through these gaps, adversely affecting the use of the indoor fiber optic connection equipment. Utility Model Content

[0005] In view of the defects existing in the prior art, the purpose of this utility model is to provide a waterproof and sealed fiber optic connector to solve the problem that the left and right sides of the O-ring in the existing fiber optic connector are prone to gaps after being compressed, which allows external rainwater to enter and adversely affect the use of indoor fiber optic connection equipment.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This application provides a waterproof and sealed fiber optic connector, comprising:

[0008] Stop;

[0009] A cylindrical mounting part is used for inserting one end of an external optical fiber. One end of the optical fiber inserted into the mounting part is fixedly connected to one end of the mounting part. The outer surface of the mounting part is provided with an outwardly extending connecting flange along the circumferential direction.

[0010] An O-ring is fitted onto one side of the outer peripheral surface of the mounting part, and one end face of the O-ring is in contact with the end face of the connecting flange.

[0011] A spring is fitted onto the other side of the outer peripheral surface of the mounting part. A connecting piece is installed on one side of the spring. The connecting piece is movably fitted onto the outer peripheral surface of the mounting part. One side of the spring is in contact with the other end face of the O-ring seal through the connecting piece. The other end of the spring is fixed to the outer surface of the mounting part.

[0012] The mounting box includes a first cavity that runs through both the front and rear ends. The mounting box is fixedly mounted on one end of the stop member. The mounting part extends from the other end of the stop member and is fixedly mounted in the first cavity of the mounting box. The outer edge of the O-ring seal is pressed against the inner wall of the mounting part. The mounting box applies a compressive force to the spring toward one side of the mounting part, so that the spring presses the O-ring seal tightly against the mounting part.

[0013] The housing includes a second cavity that runs through both the front and rear ends, and the mounting box is fixedly installed in the second cavity of the housing.

[0014] Furthermore, the stop includes a main body, a hollow insertion part that extends coaxially from the main body and is inserted into the second cavity of the housing, and a cylindrical head that protrudes outward from the insertion part. The head is coaxially arranged with the insertion part, and the diameter of the insertion part is smaller than the diameter of the main body. The mounting box is fixedly connected to the head, and the mounting part extends into the second cavity of the housing in sequence through the main body, the insertion part and the head.

[0015] Furthermore, the outer peripheral surface of the head is provided with a first connecting protrusion extending outward along the circumferential direction, and the mounting box is provided with a first connecting slot and a second connecting slot in sequence along the direction extending towards one side of the housing. When the first connecting protrusion and the connecting flange are respectively clamped and installed in the first connecting slot and the second connecting slot, the head applies a compressive force to the spring towards one side of the mounting part.

[0016] Furthermore, the housing has a third connecting slot, and the outer side of the mounting box has an outwardly extending locking block, which is locked in the second connecting slot.

[0017] Furthermore, the stop also includes a flip cover, one end of which is hinged and mounted on the main body on the side away from the housing.

[0018] Furthermore, mounting grooves are provided on opposite sides of the flip cover, and connecting blocks extending outward and engaging with the mounting grooves are provided on opposite sides of the main body.

[0019] Furthermore, it also includes a cover, which includes a protective sleeve and a handle. One end of the handle is fixedly connected to the protective sleeve, and the protective sleeve has an insertion hole for inserting the mounting part.

[0020] Furthermore, it also includes a connecting part, through which the mounting part is fixedly connected to the optical fiber.

[0021] The beneficial effects of this utility model are as follows:

[0022] By employing the aforementioned waterproof and sealed fiber optic connector, a connecting flange and a spring are provided on the outer peripheral surface of the mounting part. An O-ring is fitted onto the outer surface of the mounting part and located between the connecting flange and the spring. After the mounting part is installed into the mounting box, one end of the stop member applies a squeezing force to the spring in the direction of the connecting flange, causing the connecting piece on the spring to press the O-ring against the end face of the connecting flange. Because the end face of the O-ring is subjected to a vertical force, the O-ring deforms radially, making the inner and outer walls of the O-ring more tightly adhere to the outer peripheral surface of the optical fiber and the inner wall of the mounting box. This prevents gaps between the O-ring, the optical fiber, and the mounting box. Furthermore, the O-ring is tightly fitted to the side end face of the connecting flange, thus blocking external rainwater on one side of the O-ring and making it difficult for it to flow into the indoor side through the optical fiber, achieving a very good waterproof and sealing effect. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the waterproof and sealed fiber optic connector in the embodiments of this application.

[0024] Figure 2 This is an exploded view of the installation and assembly structure of the waterproof and sealed fiber optic connector in the embodiments of this application.

[0025] Figure 3 This is a schematic diagram of the structure of the flap on the stop member in the embodiment of this application.

[0026] Figure 4 This is a three-dimensional structural diagram of the stop member in the embodiments of this application.

[0027] Figure 5 This is a schematic diagram of the structural state after the stopper is removed from the flip cover in the embodiment of this application.

[0028] Figure 6 This is a schematic diagram of the structural state of the cover and the mounting part in an embodiment of this application.

[0029] Figure 7 This is a schematic diagram illustrating the installation process of inserting the mounting box into the mounting part in an embodiment of this application.

[0030] Figure 8 This is a schematic diagram illustrating the installation process of the housing being mounted onto the mounting box in an embodiment of this application.

[0031] Figure 9 This is a schematic diagram of the structural state of the O-ring and spring installed on the mounting part in the embodiment of this application.

[0032] Figure 10 This is an exploded view of the installation and assembly of the O-ring seal and spring on the mounting part in the embodiments of this application. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0034] See appendix Figure 1 To be continued Figure 10 As shown, this embodiment provides a waterproof and sealed fiber optic connector 100. The fiber optic connector 100 of this embodiment is a detachable connection component of a cable 1 introduced from outside the building into the building, so as to construct an optical communication line inside and within the building.

[0035] The fiber optic connector 100 according to this embodiment includes: a cylindrical mounting portion 21 mounted on the end of a cable 1 to align with the fiber optic core wire; the cylindrical mounting portion 21 has an insertion tube structure with the upper end of the cable 1 open for insertion; a stop member 24 that fixes the cable 1 inside the insertion tube by rotating a cover connected by a hinge structure formed on one side of the insertion tube; a mounting box 26 for inserting into one side of the cylindrical mounting portion 21; and a housing 27 for inserting the mounting box 26 into the housing for fixation.

[0036] like Figure 2 As shown, a cylindrical mounting portion 21 is coaxially connected to an optical fiber at the end of the cable 1. A connecting portion 22 surrounds the cylindrical mounting portion 21 and a portion of the cable 1. A spring 28 and a connecting piece are mounted on the outside of the cylindrical mounting portion 21.

[0037] The cylindrical mounting part 21 refers to a slender cylindrical tube used for arranging fiber optic cores when connecting optical connectors, etc. It is a component with a hole in the center. In terms of the fiber optic connection characteristics of cable 1, the cylindrical mounting part 21 must maintain a deformation-resistant and accurate shape. In order to prevent damage to the fiber optic cores and maintain the shape, it is best to maintain a sturdy material and an elastic frame. Materials such as stainless steel, plastic-polymer, and ceramic aluminum, zirconium oxide, etc. can be used.

[0038] That is, such as Figure 2 As shown, a connecting flange 23 can be provided on the outer peripheral surface of the cylindrical mounting part 21. The diameter of the outer peripheral surface of the connecting flange 23 can be formed to be less than 4 mm. One side of the cylindrical mounting part 21 can be connected to the cable 1.

[0039] The connector 22 is cylindrical and encloses the portion connecting the cylindrical mounting portion 21 and the cable 1. The connector 22 is compressed to connect the cylindrical mounting portion 21 and the cable 1, and the connector 22 may be made of metal. At least a portion of the optical fiber surrounding the cable 1 may be fixed between the connector 22 and one side of the cylindrical mounting portion 21.

[0040] See attached document Figure 9 and attached Figure 10 As shown, the O-ring 30 is fitted onto one side of the outer peripheral surface of the mounting part, and one end face of the O-ring 30 is in contact with the end face of the connecting flange. The spring 28 is fitted onto the other side of the outer peripheral surface of the mounting part 21, and a connecting piece 31 is mounted on one side of the spring 28. The connecting piece 31 is movably fitted onto the outer peripheral surface of the mounting part 21, and one side of the spring 28 is in contact with the other end face of the O-ring 30 through the connecting piece 31. The other end of the spring 28 is fixed to the outer surface of the mounting part 21.

[0041] Additionally, a portion of the front of the stop 24 is also inserted into the interior of one side of the mounting box 26. As the locking protrusion (not shown) formed in the contact portion of the stop 24 and the mounting box 26 engages with the locking groove (not shown), the stop 24 and the mounting box 26 can remain engaged with each other.

[0042] Due to the combination of the mounting box 26 and the stop 24, the spring 28 is compressed between the connecting flange 23 and the stop 24. The connecting flange 23 is in close contact with the O-ring 30 by the elasticity of the spring 28.

[0043] See attached document Figure 6 To be continued Figure 8As shown, the mounting box includes a first cavity that runs through both its front and rear ends. The mounting box is fixedly mounted on one end of the stop member. The mounting part extends from the other end of the stop member and is fixedly mounted in the first cavity of the mounting box. The outer edge of the O-ring seal is pressed against the inner wall of the mounting part. The mounting box applies a compressive force to the spring on one side of the mounting part, causing the spring to press the O-ring seal tightly against the mounting part. The housing includes a second cavity that runs through both its front and rear ends, and the mounting box is fixedly mounted in the second cavity of the housing.

[0044] See attached document Figure 2 As shown, the cover 29 includes a protective sleeve 291 and a handle 292. One end of the handle 292 is fixedly connected to the protective sleeve 291. The protective sleeve 291 has an insertion hole for the installation part to be inserted. When the handle 292 is pulled, the protective sleeve 291 can be separated from the cylindrical installation part 21.

[0045] See attached document Figure 3 To be continued Figure 5 As shown, the stop tube 24 may include a main body 242 covered by a cover fixing portion 250, a hollow cylindrical insertion portion 241 extending coaxially from the main body 242 and having a diameter smaller than the main body 242, and a cylindrical head 243 partially protruding coaxially from the insertion portion 241. The outer surface of the head 243 may have a locking portion 243a, which is inserted into the mounting box 26 and locked inside the mounting box 26. The upper ends of the head 243 and the insertion portion 241 are open to facilitate the insertion and placement of cables, except for a portion of the end of the main body 242. Hinge protrusions 245 for forming a hinge structure are formed on both sides of the end of the main body 242, and locking protrusions 244 for fixing and locking the cover fixing portion 250 may be provided on both sides of the front end of the main body 242 adjacent to the insertion portion 241. Here, the locking protrusion 244 may be a wedge-shaped structure with its upper end inclined downwards and its lower end forming a surface perpendicular to the side of the insertion tube. This is so that the side of the main body 251 can easily slide down along the inclined surface of the locking protrusion 244 by rotating the cover fixing part 250, thereby providing a structure in which the locking hole 254 of the main body 251 can be easily inserted into the locking protrusion 244 of the stop member 24, thereby fixing the cover fixing part 250 to the stop member 24.

[0046] The outer peripheral surface of the head 243 is provided with a first connecting protrusion extending outward in the circumferential direction. The mounting box 26 is provided with a first connecting slot and a second connecting slot in sequence in the direction extending towards one side of the housing. When the first connecting protrusion and the connecting flange are respectively clamped and installed in the first connecting slot and the second connecting slot, the head 243 applies a compressive force to the spring 28 towards one side of the mounting part.

[0047] The cover fixing component 250 includes a body 251 with a hexahedral structure, having an open front surface, a rear surface, and a lower surface. Specifically, the cover fixing part 250 has hinge holes 255a and 255b formed on a semi-circular protruding surface at its end, for insertion and engagement with hinge protrusions 245 formed on the end side of the stop member 24, forming a cover structure open at the front, rear, and bottom. The inner side of the upper surface has upper end fixing parts 252 and 253 of a predetermined thickness for fixing the upper end of the cable 1 inserted into the stop member 24. The upper fixing part may include an inner side upper fixing part 253 attached to the inner side of the upper end of the cover fixing part 250 and a rod-shaped protrusion 252 extending from the inner side upper fixing part 253 and received in the upper open portion of the stop member 24. Furthermore, a locking hole 254 corresponding to the locking protrusion 244 formed on the lower side of the main body 251 of the cover fixing part 250 is formed, thus providing a locking structure. In this locking structure, the cover fixing part 250 rotates towards the stop member 24, causing the locking hole 254 to engage with the locking protrusion 244, thereby securing the inserted cable 1. The housing 27 has a third connecting slot, and an outwardly extending locking block is provided on the outer side of the cover fixing part 250, which engages in the second connecting slot.

[0048] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A waterproof and sealed fiber optic connector, characterized in that, include: Stop; A cylindrical mounting part is used for inserting one end of an external optical fiber. One end of the optical fiber inserted into the mounting part is fixedly connected to one end of the mounting part. The outer surface of the mounting part is provided with an outwardly extending connecting flange along the circumferential direction. An O-ring is fitted onto one side of the outer peripheral surface of the mounting part, and one end face of the O-ring is in contact with the end face of the connecting flange. A spring is fitted onto the other side of the outer peripheral surface of the mounting part. A connecting piece is installed on one side of the spring. The connecting piece is movably fitted onto the outer peripheral surface of the mounting part. One side of the spring is in contact with the other end face of the O-ring seal through the connecting piece. The other end of the spring is fixed to the outer surface of the mounting part. The mounting box includes a first cavity that runs through both the front and rear ends. The mounting box is fixedly mounted on one end of the stop member. The mounting part extends from the other end of the stop member and is fixedly mounted in the first cavity of the mounting box. The outer edge of the O-ring seal is pressed against the inner wall of the mounting part. The mounting box applies a compressive force to the spring toward one side of the mounting part, so that the spring presses the O-ring seal tightly against the mounting part. The housing includes a second cavity that runs through both the front and rear ends, and the mounting box is fixedly installed in the second cavity of the housing.

2. The waterproof and sealed fiber optic connector according to claim 1, characterized in that, The stop includes a main body, a hollow insertion part that extends coaxially from the main body and is inserted into a second cavity of the housing, and a cylindrical head that protrudes outward from the insertion part. The head is coaxially arranged with the insertion part, and the diameter of the insertion part is smaller than the diameter of the main body. The mounting box is fixedly connected to the head, and the mounting part extends into the second cavity of the housing in sequence through the main body, the insertion part and the head.

3. A waterproof and sealed fiber optic connector according to claim 2, characterized in that, The outer peripheral surface of the head is provided with a first connecting protrusion extending outward along the circumferential direction. The mounting box is provided with a first connecting slot and a second connecting slot in sequence along the direction extending towards one side of the housing. When the first connecting protrusion and the connecting flange are respectively clamped and installed in the first connecting slot and the second connecting slot, the head applies a compressive force to the spring towards one side of the mounting part.

4. A waterproof and sealed fiber optic connector according to claim 3, characterized in that, The housing has a third connecting slot, and the outer side of the mounting box has an outwardly extending locking block, which is locked in the second connecting slot.

5. A waterproof and sealed fiber optic connector according to claim 2, characterized in that, The stop also includes a flip cover, one end of which is hinged and mounted on the main body on the side away from the housing.

6. A waterproof and sealed fiber optic connector according to claim 5, characterized in that, The flip cover has mounting grooves on its opposite sides, and the main body has connecting blocks that extend outward and engage with the mounting grooves on its opposite sides.

7. A waterproof and sealed fiber optic connector according to claim 1, characterized in that, It also includes a cover, which includes a protective sleeve and a handle. One end of the handle is fixedly connected to the protective sleeve, and the protective sleeve has an insertion hole for inserting the mounting part.

8. A waterproof and sealed fiber optic connector according to claim 1, characterized in that, It also includes a connecting part, through which the mounting part is fixedly connected to the optical fiber.

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