Dustproof structure of ceramic ferrule

Abstract

The utility model belongs to ceramic plug core technical field, specifically disclose a dustproof structure of ceramic plug core, including upper seal cover and lower seal cover, upper seal cover and lower seal cover are rotatably connected through a rotating rod, so that upper seal cover can be opened or closed relative to lower seal cover, to form or open a dustproof sealed space for accommodating and protecting ceramic plug core, the relative inner side wall of upper seal cover and lower seal cover is equipped with sealing cavity, the utility model integrates and forms integrated rotation system through rotating rod with upper seal cover and lower seal cover, compared with split structure, the assembly error and gap hidden danger brought by the assembly error and gap hidden danger of many components splicing are reduced, and integrated rotating rod provides fixed and stable axial support for opening and closing, and the adaptability of the sealed space enclosed by the sealing cavity, combined with the rigid reinforcement effect of the annular support wall, can effectively avoid the sealing cavity deformation and dust leakage problem caused by external force extrusion.

Description

Technical Field

[0001] This application relates to the field of ceramic ferrule technology, and more specifically, to a dustproof structure for a ceramic ferrule. Background Technology

[0002] As the core type of fiber optic ferrule, ceramic ferrules are the most widely used and extensive precision positioning components in fiber optic communication networks. They are made of zirconium dioxide ceramic and are cylindrical tubes. They are not only hard and white with a delicate texture, but also have a finished product precision that can reach the sub-micron level. They play a key role in fiber optic connector manufacturing and optical device coupling. Their core function is to achieve precise physical connection of optical fibers. They are usually used in conjunction with ceramic sleeves to ensure connection accuracy.

[0003] In practical applications, after optical fibers are connected to fiber optic connectors via LC ceramic ferrules, dust protection devices are required to prevent dust, impurities, or physical damage to the ferrule output end. Currently, the mainstream dust protection solutions on the market fall into two categories: one uses a silicone sleeve as a dust cap, directly fitted onto the output end of the ceramic ferrule. However, the friction generated between the sleeve and the ferrule end face during insertion and removal can easily cause wear and scratches on the ferrule end face, damaging the sub-micron precision structure and thus affecting the low loss and high stability of the fiber optic connection; the other is a non-contact cap, which is fitted onto one end of the fiber optic connector and covers the ceramic ferrule. However, an unavoidable gap exists between the cap and the ferrule output end, allowing external dust, moisture, and other contaminants to easily penetrate through this gap, resulting in poor dust protection and failing to meet the stringent requirements for ferrule end face cleanliness in precision optical communication scenarios. Utility Model Content

[0004] To address the aforementioned issues, this application provides a dustproof structure for ceramic ferrules.

[0005] The dustproof structure for a ceramic ferrule provided in this application adopts the following technical solution:

[0006] A dustproof structure for a ceramic insert includes an upper sealing cover and a lower sealing cover;

[0007] The upper and lower sealing caps are rotatably connected by a rotating rod, allowing the upper sealing cap to open or close relative to the lower sealing cap to form or open a sealed dustproof space for accommodating and protecting the ceramic insert.

[0008] Through the above technical solution, the rotating rod integrates the upper and lower sealing covers to form an integrated rotating system. Compared with the split structure, it reduces the assembly error and gap risks caused by splicing multiple parts. Furthermore, the integrated rotating rod provides a fixed and stable axial support for opening and closing. Combined with the adaptable and sealed space of the sealing cavity and the rigid reinforcement effect of the annular support wall, it can effectively avoid the problem of dust leakage caused by deformation of the sealing cavity due to external pressure.

[0009] Furthermore, the upper and lower sealing covers have sealing cavities on their respective inner walls. When the upper and lower sealing covers are closed, the two sealing cavities together form a sealed dustproof space that matches the shape of the ceramic insert.

[0010] Furthermore, the radial dimension of the sealing cavity is smaller than the radial dimension of the upper and lower sealing cap bodies on which it is located, thereby forming a ring-shaped support wall around the sealing cavity to enhance the sealing reliability.

[0011] Furthermore, the upper sealing cover has at least one insert rod extending outward from its side edge, and the lower sealing cover has at least one corresponding insertion hole on its side edge. When the upper and lower sealing covers are closed, the insert rod can be inserted into the corresponding insertion hole to achieve auxiliary positioning and locking.

[0012] Furthermore, the insertion rod and the insertion hole are connected by an interference fit.

[0013] Through the above technical solution, at least one insert extending outward from the side edge of the upper sealing cover is simultaneously inserted into at least one corresponding insertion hole on the side edge of the lower sealing cover. The insert and the insertion hole are interference-fitted to achieve auxiliary positioning and locking, effectively preventing accidental opening due to transportation, vibration, or accidental contact, and further securing the closed state.

[0014] Furthermore, friction pads are provided on the inner walls of the upper and lower sealing covers. The friction pads are made of elastic material and are distributed continuously or intermittently along the circumference of the upper sealing cover.

[0015] Furthermore, a pull ring is fixedly installed on the outer wall of the upper sealing cover. The pull ring is configured to facilitate the user to apply force to operate the upper sealing cover to open and close.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] (1) This utility model integrates the upper sealing cover and the lower sealing cover into an integrated rotating system by means of a rotating rod. Compared with the split structure, it reduces the assembly error and gap hazards caused by splicing multiple parts. In addition, the integrated rotating rod provides a fixed and stable axial support for opening and closing. Combined with the adaptable sealed space of the sealing cavity and the rigid reinforcement effect of the annular support wall, it can effectively avoid the problem of dust leakage caused by deformation of the sealing cavity due to external force squeezing.

[0018] (2) This utility model adopts a rotating rod to realize the rotational opening and closing design of the upper sealing cover and the lower sealing cover, which replaces the axial insertion and removal operation logic of the traditional contact dustproof structure such as silicone sleeve. During the opening and closing process, the cover rotates around the rotating rod to realize opening or closing. There is no direct contact or relative friction with the end face of the ceramic ferrule throughout the process. This fundamentally solves the problem of wear and scratches on the end face of the ferrule caused by friction in the traditional plug-in dustproof cap, ensures the submicron level precision docking accuracy of the ceramic ferrule, and avoids problems such as increased fiber optic docking loss and decreased communication stability caused by end face damage. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a side view of the present invention;

[0021] Figure 3 This is a cross-sectional view of the present invention;

[0022] Figure 4 This is a plan view of the present invention;

[0023] Figure 5 This is an open view of the present invention.

[0024] Explanation of reference numerals in the attached diagram: 1. Upper sealing cover; 2. Lower sealing cover; 3. Friction pad; 4. Pull ring; 5. Sealing cavity; 6. Rotating rod; 7. Insertion hole; 8. Insertion rod. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] Reference Figures 1-5 A dustproof structure for a ceramic insert includes an upper sealing cover 1 and a lower sealing cover 2;

[0027] The upper sealing cover 1 and the lower sealing cover 2 are rotatably connected by a rotating rod 6, so that the upper sealing cover 1 can be opened or closed relative to the lower sealing cover 2 to form or open a sealed dustproof space for accommodating and protecting the ceramic insert.

[0028] When dust protection is required for the ceramic ferrule, the user can apply force by holding the pull ring 4 fixed on the outer wall of the upper sealing cover 1. The pull ring 4 is a dedicated force application component, which greatly reduces the difficulty of operation. The user can use it to rotate the upper sealing cover 1 towards the lower sealing cover 2 until it is completely closed.

[0029] At this time, the upper sealing cover 1 and the lower sealing cover 2 are precisely aligned with the sealing cavity 5 on their respective inner side walls and together enclose each other, forming a sealed dustproof space that matches the shape of the ceramic insert.

[0030] Since the radial dimension of the sealing cavity 5 is smaller than the radial dimension of the upper sealing cover 1 and the lower sealing cover 2, a ring-shaped support wall is naturally formed around the sealing cavity 5. This ring-shaped support wall can strengthen the structural rigidity of the sealing cavity 5, prevent the sealing cavity 5 from being deformed by external force after closing, and ensure the sealing performance of the sealed space.

[0031] The friction pads 3, made of elastic material and distributed continuously or intermittently along the circumference, are provided on the inner walls of the upper sealing cover 1 and the lower sealing cover 2. After closing, they will make close and flexible contact with the circular surface of the fiber optic connector. This not only avoids damage caused by hard contact between the sealing cover body and the fiber optic connector through elastic contact, but also fills the tiny gap between the friction pads 3 and the circular surface of the fiber optic connector by means of the deformation ability of the elastic material.

[0032] Reference Figures 1-5 The upper sealing cover 1 and the lower sealing cover 2 are provided with sealing cavities 5 on their respective inner sidewalls. When the upper sealing cover 1 and the lower sealing cover 2 are closed, the two sealing cavities 5 together form a sealed dustproof space that is adapted to the shape of the ceramic insert. The radial dimension of the sealing cavity 5 is smaller than the radial dimension of the upper sealing cover 1 and the lower sealing cover 2 body on which it is located, thereby forming a ring support wall around the sealing cavity 5 to enhance the sealing reliability.

[0033] Reference Figures 1-5 The upper sealing cover 1 has at least one insert rod 8 extending outward from its side edge, and the lower sealing cover 2 has at least one corresponding insertion hole 7. When the upper sealing cover 1 and the lower sealing cover 2 are closed, the insert rod 8 can be inserted into the corresponding insertion hole 7 to achieve auxiliary positioning and locking. The insert rod 8 and the insertion hole 7 are connected by an interference fit.

[0034] At least one insert rod 8 extending outward from the side edge of the upper sealing cover 1 is simultaneously inserted into at least one corresponding insertion hole 7 on the side edge of the lower sealing cover 2. The insert rod 8 and the insertion hole 7 are interference-fitted to achieve auxiliary positioning and locking, effectively preventing accidental opening caused by transportation, vibration or accidental contact, and further stabilizing the closed state.

[0035] Reference Figures 1-4 The inner walls of the upper sealing cover 1 and the lower sealing cover 2 are provided with friction pads 3. The friction pads 3 are made of elastic material and are distributed continuously or intermittently along the circumference of the upper sealing cover 1. A pull ring 4 is fixedly provided on the outer wall of the upper sealing cover 1. The pull ring 4 is configured to facilitate the user to apply force to operate the upper sealing cover 1 to open and close.

[0036] When using ceramic ferrules for fiber optic splicing, the user applies a reverse pulling force through the pull ring 4, causing the upper sealing cover 1 to rotate around the rotating rod 6 in a direction away from the lower sealing cover 2. This causes the rod 8 to disengage from the interference constraint of the socket 7, separating the upper sealing cover 1 from the lower sealing cover 2. The sealed dustproof space is then opened, exposing the output end of the ceramic ferrule, allowing subsequent splicing operations to proceed.

[0037] Working principle: When dust protection of ceramic ferrules is required, the working process is started. First, the user holds the pull ring 4 fixed on the outer wall of the upper sealing cover 1 and uses the pull ring 4 as the force point to drive the upper sealing cover 1 to move. Since the upper sealing cover 1 and the lower sealing cover 2 are rotatably connected by the rotating rod 6, the upper sealing cover 1 rotates around the rotating rod 6 towards the lower sealing cover 2 until the two are completely closed.

[0038] During the closing process, the insertion rod 8 on the side edge of the upper sealing cover 1 is simultaneously aligned with the insertion hole 7 on the side edge of the lower sealing cover 2. Finally, the insertion rod 8 is inserted into the insertion hole 7. Through interference fit, the upper sealing cover 1 and the lower sealing cover 2 are positioned and locked to prevent them from accidentally separating in the subsequent process.

[0039] Meanwhile, the sealing cavities 5 on the inner sidewalls of the upper sealing cover 1 and the lower sealing cover 2 are aligned and enclosed together to form a sealed dustproof space that matches the shape of the ceramic insert. Because the radial dimension of the sealing cavity 5 is smaller than the radial dimension of the upper sealing cover 1 and the lower sealing cover 2, a ring-shaped support wall is formed around the sealing cavity 5. This ring-shaped support wall improves the structural rigidity of the sealing cavity 5 and prevents external force from squeezing and deforming the sealing cavity 5, thus damaging the sealing performance.

[0040] In addition, the elastic material friction pads 3, which are continuously or intermittently distributed along the inner walls of the upper sealing cover 1 and the lower sealing cover 2, are in close contact with the circular surface of the fiber optic connector after closing. They fill the tiny gap between the friction pads 3 and the circular surface through elastic deformation, while avoiding damage caused by hard contact between the sealing cover body and the fiber optic connector.

[0041] When the dustproof structure needs to be removed, the user applies a reverse pulling force through the pull ring 4, causing the upper sealing cover 1 to rotate around the rotating rod 6 in a direction away from the lower sealing cover 2. The plug rod 8 disengages from the plug hole 7 to release the lock, the upper sealing cover 1 and the lower sealing cover 2 open, the sealed dustproof space is opened, the ceramic ferrule output end is exposed, and subsequent operations such as fiber optic connection can be performed.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dustproof structure for a ceramic ferrule, characterized in that, include: Upper sealing cap (1) and lower sealing cap (2); The upper sealing cover (1) and the lower sealing cover (2) are rotatably connected by a rotating rod (6), so that the upper sealing cover (1) can be opened or closed relative to the lower sealing cover (2) to form or open a sealed dustproof space for accommodating and protecting the ceramic insert.

2. The dustproof structure for a ceramic ferrule according to claim 1, characterized in that: The upper sealing cover (1) and the lower sealing cover (2) are provided with sealing cavities (5) on their respective inner sidewalls. When the upper sealing cover (1) and the lower sealing cover (2) are closed, the two sealing cavities (5) together form a sealed dustproof space that is adapted to the shape of the ceramic insert.

3. The dustproof structure for a ceramic ferrule according to claim 2, characterized in that: The radial dimension of the sealing cavity (5) is smaller than the radial dimension of the upper sealing cover (1) and the lower sealing cover (2) body on which it is located, thereby forming a ring support wall around the sealing cavity (5) to enhance the sealing reliability.

4. The dustproof structure for a ceramic ferrule according to claim 1, characterized in that: The upper sealing cover (1) has at least one insert rod (8) extending outward from its side edge, and the lower sealing cover (2) has at least one corresponding insertion hole (7) on its side edge. When the upper sealing cover (1) and the lower sealing cover (2) are closed, the insert rod (8) can be inserted into the corresponding insertion hole (7) to achieve auxiliary positioning and locking.

5. The dustproof structure for a ceramic ferrule according to claim 4, characterized in that: The insertion rod (8) and the insertion hole (7) are connected by an interference fit.

6. The dustproof structure for a ceramic ferrule according to claim 1, characterized in that: The inner walls of the upper sealing cover (1) and the lower sealing cover (2) are provided with friction pads (3), which are made of elastic material and are distributed continuously or intermittently along the circumference of the upper sealing cover (1).

7. The dustproof structure for a ceramic ferrule according to claim 1, characterized in that: A pull ring (4) is fixedly provided on the outer wall of the upper sealing cover (1). The pull ring (4) is configured to facilitate the user to apply force to operate the upper sealing cover (1) to open and close.

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