Dustproof cap and duplex optical fiber connector

Abstract

The utility model discloses a dustproof cap and a duplex optical fiber connector, the duplex optical fiber connector further comprises a shell and two connecting ends, the shell is provided with a clamping arm, the two connecting ends are connected to one side, adjacent to the clamping arm, of the shell, one end of the dustproof cap is provided with a plugging part, and the plugging part is used for accommodating the two connecting ends of the duplex optical fiber connector; the peripheral side of the dustproof cap is provided with a clamping part, and the clamping part is used for clamping and fixing with a clamping arm of the duplex optical fiber connector. According to the dustproof cap, the plugging part can accommodate the two connecting ends, and the clamping part can be clamped and fixed with the clamping arm of the duplex optical fiber connector, so that only one-time pulling or plugging operation is needed in the assembling and using processes, the assembling and construction efficiency is high, the use is more convenient, and the dustproof cap is convenient to use. The dustproof cap is clamped and fixed by utilizing the clamping part and the clamping arm, and the clamping part and the clamping arm adopt a clamping connection structure, so that the stability is higher, and the problem that the dustproof cap vibrates and falls off in the transportation process of the optical fiber connector is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fiber optic connectors, and particularly relates to a dust cap and a duplex fiber optic connector. Background Art

[0002] A fiber optic connector is a device used to achieve repeatable pluggable connections between optical fibers. It is widely used in optical communication and network systems to ensure effective optical signal transmission and connection reliability. The dust cap in the fiber optic connector is installed at the joint of the fiber optic connector and plays a role in protecting the ferrule and preventing dust during the storage and transportation of the fiber optic connector, avoiding mechanical damage and dirt to the optical device and thus affecting the use performance.

[0003] The existing duplex fiber optic connector uses an interference fit between a single-head dust cap and the jack of the connection end. Two single-head dust caps are required for a duplex fiber optic connector, and two pulling or inserting operations are needed during assembly and use, resulting in low assembly and construction efficiency and poor convenience. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a dust cap and a duplex fiber optic connector, aiming to improve the convenience of disassembling and assembling the dust cap.

[0005] To achieve the above purpose, the utility model proposes a dust cap applied to a duplex fiber optic connector. The duplex fiber optic connector further includes a housing and two connection ends. The housing is provided with the clamping arm, and the two connection ends are connected to one side of the housing adjacent to the clamping arm. One end of the dust cap is provided with a plugging part for accommodating the two connection ends of the duplex fiber optic connector;

[0006] The circumferential side of the dust cap is provided with a clamping part for clamping and fixing with the clamping arm of the duplex fiber optic connector.

[0007] In some embodiments of the utility model, the plugging part is two slots which are arranged at intervals and respectively used for accommodating the two connection ends.

[0008] In some embodiments of the utility model, the clamping part is two clamping grooves. The clamping grooves and the slots are arranged on the same side of the dust cap. One clamping groove is aligned with one slot, and one clamping arm is inserted into and clamped by one clamping groove.

[0009] In some embodiments of the utility model, the two side walls of the clamping groove in the arrangement direction of the two slots are provided with limiting protrusions. A clearance is left between the limiting protrusions and the side wall of the clamping groove close to the slot, so that the clamping protrusion of the clamping arm is clamped inside the limiting protrusions.

[0010] In some embodiments of the present utility model, a partial through opening is formed in a side wall of the clamping groove away from the insertion slot, and the opening is located inside the limiting protrusion. When the clamping groove is configured to be clamped with the clamping arm, the clamping protrusion is exposed from the opening.

[0011] In some embodiments of the present utility model, a middle part of a side wall of the clamping groove close to the insertion slot penetrates through to the insertion slot to form an avoidance channel for avoiding the clamping arm.

[0012] In some embodiments of the present utility model, a protective sleeve protrudes from a bottom wall of the insertion slot, and the protective sleeve is used for cooperating with a jack of the connection end.

[0013] In some embodiments of the present utility model, the protective sleeve includes an inner sleeve and an outer sleeve nested with each other, and a gap is provided between the inner sleeve and the outer sleeve.

[0014] In some embodiments of the present utility model, one end of the dust cap facing away from the insertion part is provided as a grasping part, and anti-slip curved surfaces are provided on opposite sides of the grasping part.

[0015] The present utility model further provides a duplex fiber optic connector, including a housing, two connection ends, and the above-mentioned dust cap; wherein,

[0016] The housing is provided with the clamping arm, the two connection ends are connected to one side of the housing adjacent to the clamping arm, the two connection ends are inserted into the insertion part, and the clamping arm is clamped and fixed with the clamping part.

[0017] In the dust cap of the present utility model, the insertion part can accommodate two connection ends, and the clamping part can be clamped and fixed with the clamping arm of the duplex fiber optic connector. In this way, only one pulling or inserting operation is required during the assembly and use process, the assembly and construction efficiency is relatively high, and the use is more convenient. Moreover, since the dust cap is clamped and fixed with the clamping arm by using the clamping part, and the two adopt a clamping connection structure, the stability is higher, effectively avoiding the problem that the dust cap vibrates and falls off during the transportation of the fiber optic connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0019] Figure 1 It is a schematic structural diagram of an embodiment of the duplex fiber optic connector of the present utility model from a perspective;

[0020] Figure 2 This is a schematic structural diagram of an embodiment of the duplex fiber optic connector of the present utility model from another perspective;

[0021] Figure 3 This is a schematic structural diagram of an embodiment of the duplex fiber optic connector of the present utility model from yet another perspective;

[0022] Figure 4 This is a cross-sectional view of an embodiment of the duplex fiber optic connector of the present utility model.

[0023] Explanation of the reference numerals in the drawings:

[0024] 100, dust cap; 10, plugging part; 11, slot; 12, protective sleeve; 121, inner sleeve; 122, outer sleeve; 20, clamping part; 21, clamping groove; 22, limiting protrusion; 23, avoidance interval; 24, opening; 25, avoidance channel; 30, grasping part; 31, anti-slip surface; 200, duplex fiber optic connector; 210, housing; 211, clamping arm; 212, clamping protrusion; 220, connection end; 221, jack; 222, ferrule.

[0025] The realization of the purpose, functional characteristics and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, if the embodiments of the present utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or is unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0029] Please refer to Figures 1 to 4 , the present utility model provides a dust cap 100, which is applied to a duplex fiber optic connector 200. The duplex fiber optic connector 200 further includes a housing 210 and two connection ends 220. The housing 210 is provided with the clamping arm 211. The two connection ends 220 are connected to one side of the housing 210 adjacent to the clamping arm 211. One end of the dust cap 100 is provided with a plugging portion 10, and the plugging portion 10 is used to accommodate the two connection ends 220 of the duplex fiber optic connector 200; a clamping portion 20 is provided on the circumferential side of the dust cap 100, and the clamping portion 20 is used to be clamped and fixed with the clamping arm 211 of the duplex fiber optic connector 200.

[0030] In the dust cap 100 of the present utility model, the plugging portion 10 can accommodate the two connection ends 220, and the clamping portion 20 can be clamped and fixed with the clamping arm 211 of the duplex fiber optic connector 200. In this way, only one plugging or unplugging operation is required during the assembly and use processes, the assembly and construction efficiency is relatively high, and it is more convenient to use. Moreover, since the dust cap 100 is clamped and fixed with the clamping arm 211 by using the clamping portion 20, and the two adopt a clamping connection structure, the stability is higher, effectively avoiding the problem that the dust cap 100 vibrates and falls off during the transportation of the fiber optic connector.

[0031] In some embodiments of the present utility model, the plugging portion 10 is provided as a plugging slot, and one plugging slot can be used to accommodate the connection end 220.

[0032] In other embodiments of the present utility model, the plugging portion 10 is two slots 11, and the two slots 11 are arranged at intervals and are respectively used to accommodate the two connection ends 220. In this way, the plugging stability is better, and it is not easy to loosen after assembly.

[0033] There are various ways to engage the engaging portion 20 with the engaging arm 211. In some embodiments of the present utility model, the engaging portion 20 is provided as a hook protruding from the outer wall of the dust cap 100, and the hook is engaged with the engaging protrusion 212 of the elastic arm.

[0034] In some other embodiments of the present utility model, the engaging portion 20 is two engaging grooves 21. The engaging grooves 21 and the insertion slots 11 are located on the same side of the dust cap 100. One engaging groove 21 is aligned with one insertion slot 11, and one engaging groove 21 is for one engaging arm 211 to be inserted and engaged. The design of the engaging groove 21 to be aligned with the insertion slot 11 ensures that the engaging arm 211 can be accurately inserted and fixed, improving the accuracy of assembly.

[0035] In the above solutions, there are various specific implementation manners for the engaging arm 211 to be engaged in the engaging groove 21. In some embodiments of the present utility model, a groove is provided on the side wall surface of the engaging groove 21 away from the insertion slot 11. The engaging arm 211 is inserted into the engaging groove 21, and the engaging protrusion 212 is snapped into the groove.

[0036] Preferably, in some embodiments of the present utility model, limiting protrusions 22 are provided on the two side walls of the engaging groove 21 in the arrangement direction of the two insertion slots 11. A clearance interval 23 is left between the limiting protrusions 22 and the side wall of the engaging groove 21 close to the insertion slot 11, so that the engaging protrusion 212 of the engaging arm 211 is engaged and snapped inside the limiting protrusions 22. In this way, the engaging protrusion 212 is limited by the limiting protrusions 22, and the engaging stability is good, and it is not easy for the dust cap 100 to become loose.

[0037] In some embodiments of the present utility model, a part of the side wall of the engaging groove 21 away from the insertion slot 11 penetrates to form an opening 24. The opening 24 is located inside the limiting protrusions 22. When the engaging groove 21 is configured to be engaged with the engaging arm 211, the engaging protrusion 212 is exposed at the opening 24. In this way, when it is impossible to disengage the engaging protrusion 212 from the limiting protrusions 22 by the conventional method of pressing the engaging arm 211, and thus it is impossible to remove the dust cap 100, the engaging protrusion 212 can be disengaged from the limiting protrusions 22 by pressing the engaging protrusion 212 through the opening 24. At the same time, it is also convenient for the assembler to observe whether the engaging protrusion 212 is assembled in place through the opening 24.

[0038] Furthermore, in some embodiments of the present utility model, a middle part of the side wall of the engaging groove 21 close to the insertion slot 11 penetrates to the insertion slot 11 to form an avoidance channel 25 to avoid the engaging arm 211. In this way, sufficient space is provided for the engaging arm 211, avoiding interference during assembly.

[0039] Further, in some embodiments of the present utility model, a protective sleeve 12 protrudes from the bottom wall of the slot 11, and the protective sleeve 12 is used to cooperate with the jack 221 of the connection end 220. In this way, the slot wall of the slot 11 can provide a layer of protection to prevent the ferrule 222 from deforming due to the action of external objects, and can also play a dust-proof effect. The protective sleeve 12 can provide further protection and has a better dust-proof effect.

[0040] In some embodiments of the present utility model, the protective sleeve 12 includes an inner sleeve 121 and an outer sleeve 122 nested with each other, and a gap is provided between the inner sleeve 121 and the outer sleeve 122. In this way, the protection effect and dust-proof effect of the protective sleeve 12 are not only further improved, but when the protective sleeve 12 is inserted into the jack 221, the gap between the inner sleeve 121 and the outer sleeve 122 can be used to release the stress of the outer sleeve 122, thereby reducing the frictional resistance during disassembly and assembly and improving the disassembly and assembly convenience.

[0041] Further, in some embodiments of the present utility model, one end of the dust cap 100 facing away from the plugging portion 10 is provided as a grasping portion 30, and anti-slip curved surfaces 31 are provided on opposite sides of the grasping portion 30. In this way, the disassembler and assembler can hold the two anti-slip curved surfaces 31 of the grasping portion 30 to easily remove the dust cap 100. The anti-slip curved surfaces 31 can not only adapt to the curve of the human finger pulp, but also increase the friction coefficient, further improving the disassembly and assembly convenience.

[0042] The present utility model also proposes a duplex fiber optic connector 200. The duplex fiber optic connector 200 can be an LC fiber optic connector. The duplex fiber optic connector 200 includes a housing 210, two connection ends 220, and the above-mentioned dust cap 100. Among them, the housing 210 is provided with the clamping arm 211. The two connection ends 220 are connected to one side of the housing 210 adjacent to the clamping arm 211. The two connection ends 220 are plugged into the plugging portion 10, and the clamping arm 211 is clamped and fixed with the clamping portion 20. The specific structure of the dust cap 100 refers to the above embodiments. Since the duplex fiber optic connector 200 of the present utility model adopts all the technical solutions of the above all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated herein one by one.

[0043] The above description is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A dust cap (100), applied to a duplex optical fiber connector (200), the duplex optical fiber connector further comprising a housing (210) and two connecting ends, the housing (210) being provided with a clamping arm (211), the two connecting ends (220) being connected to a side of the housing (210) adjacent to the clamping arm (211), characterized in that: One end of the dust cap (100) is provided with a plug-in portion (10), and the plug-in portion (10) is used to accommodate two connection ends (220) of the duplex optical fiber connector (200); A clamping portion (20) is provided on the circumferential side of the dust cap (100), and the clamping portion (20) is used to be clamped and fixed with a clamping arm (211) of the duplex optical fiber connector (200).

2. The dust cap (100) according to claim 1, characterized in that: The plug-in portion (10) is composed of two slots (11), which are arranged at an interval and are used to accommodate the two connection terminals (220) respectively.

3. The dust cap (100) according to claim 2, characterized in that: The clamping portion (20) is two clamping grooves (21), the clamping grooves (21) and the slot (11) are arranged on the same side of the dust cap (100), one clamping groove (21) is aligned with one slot (11), and one clamping groove (21) is used for one clamping arm (211) to be inserted and clamped.

4. The dust cap (100) according to claim 3, characterized in that: The clamping groove (21) is provided with limiting protrusions (22) on both side walls in the arrangement direction of the two slots (11), and an escape gap (23) is left between the limiting protrusion (22) and a side wall of the clamping groove (21) close to the slot, so that the clamping protrusion (212) of the clamping arm (211) passes through the escape gap (23) and is clamped to the inner side of the limiting protrusion (22).

5. The dust cap (100) according to claim 4, characterized in that: A groove wall portion of one side of the clamping groove (21) away from the slot (11) penetrates to form an opening (24), the opening being located on the inner side of the limiting protrusion, and when the clamping groove is configured to be clamped with the clamping arm, the clamping protrusion is exposed from the opening.

6. The dust cap (100) according to claim 3, characterized in that: The middle portion of a groove wall of one side of the clamping groove (21) close to the slot penetrates into the slot to form an avoidance channel (25) to avoid the clamping arm (211).

7. The dust cap (100) according to any one of claims 2 to 6, characterized in that: A protective sleeve (12) is protruding from the bottom wall of the slot (11), and the protective sleeve (12) is used to cooperate with the socket (221) of the connecting terminal (220).

8. The dust cap (100) according to claim 7, characterized in that: The protective sleeve (12) comprises an inner sleeve (121) and an outer sleeve (122) which are nested with each other, and a gap is provided between the inner sleeve (121) and the outer sleeve (122).

9. The dust cap (100) according to any one of claims 1 to 6, characterized in that: One end of the dust cap (100) facing away from the plug-in portion (10) is arranged as a gripping portion (30), and opposite sides of the gripping portion (30) are arranged as anti-slip curved surfaces (31).

10. A duplex optical fiber connector (200), characterized in that: It comprises a shell (210), two connecting ends and a dust cap (100) as claimed in any one of claims 1 to 9; wherein: The housing (210) is provided with the clamping arm (211), the two connecting ends (220) are connected to one side of the housing (210) adjacent to the clamping arm (211), the two connecting ends (220) are plugged into the plug-in portion (10), and the clamping arm (211) is clamped and fixed to the clamping portion (20).

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