Wear-resistant single-mode dual-light tail fiber

Abstract

The utility model provides a wear-resistant single-mode dual-light tail fiber, which comprises a tail fiber body, a coating sleeve is arranged outside the tail fiber body, a slidable wear-resistant part is sleeved outside the coating sleeve, the wear-resistant part comprises a middle rubber sleeve, a protective spring and a side rubber sleeve, the middle rubber sleeve and the side rubber sleeve are both sleeved on the coating sleeve, and the protective spring is sleeved on the side rubber sleeve. The two side rubber sleeves are located on the two sides of the middle rubber sleeve respectively, and the coating sleeve is sleeved with protective springs located between the middle rubber sleeve and the side rubber sleeves in a clearance mode. According to the utility model, the wear-resistant part which consists of the middle rubber sleeve, the side rubber sleeve and the spring and is sleeved outside the coating sleeve is arranged, and the side rubber sleeve is arranged into a structure which is in damping sliding fit with the coating sleeve after being extruded by the protective spring, so that the wear-resistant part can easily move on the coating sleeve after the side rubber sleeve and the spring are detached; and after the edge rubber sleeve and the protective spring are in butt joint, the wear-resistant part can effectively prevent skid, so that local extrusion and wear protection can be carried out on the coating sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of pigtails, in particular to a wear-resistant single-mode dual-optical pigtail. Background Art

[0002] When using or storing conventional dual-optical pigtails, in order to ensure the effective use of optical waveguides, the surface of the dual-optical pigtails often needs to be folded in half. However, conventional dual-optical pigtails are thin in structure and are prone to folding, resulting in damage to the optical core. In addition, the dual-optical pigtail coating is simply a protective leather cover with poor wear resistance. During use, it is easy to wear and tear, resulting in the internal optical core being exposed, affecting the normal use of the optical core. The pigtails are usually short in length and are easily bent and worn during use.

[0003] The utility model with the publication number CN218886248U proposes a wear-resistant single-mode dual-optical pigtail, including two optical cores and a covering sleeve covering the outside of the two optical cores, an isolation plate is arranged inside the covering sleeve, and ferrules matching the optical cores are fixedly installed on both sides of the isolation plate, the inside of the covering sleeve and the outside of the two optical cores are filled with cushioning cotton, the outer peripheral sleeve of the covering sleeve is provided with a wear-resistant frame, and the wear-resistant frame and the covering sleeve are in sliding contact. The prior art records that "when in use, the rubber ring is directly put on the covering sleeve to cover the easily damaged parts of the covering sleeve, and the assembly of the wear-resistant frame is completed. The sponge board can be inserted between the arc rubber strip and the covering sleeve along the gap between two adjacent arc rubber strips. Under the limitation of the four arc rubber strips, when subjected to external extrusion force, the rubber ring and the sponge board buffer the external extrusion force.

[0004] However, the above-mentioned prior art still has the following deficiencies when used: 1. The wear-resistant frame composed of rubber strips, sponge boards and rubber sleeves, which plays an extrusion and wear-resistant protection role for the covering sleeve, has a defect of large sliding resistance on the covering sleeve. When the local position of the pigtail needs to be protected, the displacement operation of the entire wear-resistant frame is inconvenient due to the resistance of contact friction between the rubber sleeve, rubber strips and sponge boards, and the sponge board is easily damaged when it is displaced with force; 2. Since the outer diameter of the pigtail is small, when installing a whole sponge board, the sponge board needs to be inserted into the gap between adjacent rubber strips and covered on the outside of the covering sleeve. This installation method is not only difficult to install, but also prone to folding of the sponge board after installation, and it cannot be fully covered on the outside of the covering sleeve.

[0005] To this end, the utility model provides a wear-resistant single-mode dual-optical pigtail. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a wear-resistant single-mode dual-optical fiber pigtail to solve the problems raised in the above-mentioned background technology. The wear-resistant portion arranged in the utility model has the advantages of being convenient to move outside the covering sleeve and having a better anti-slip effect after movement. It also has the advantage of being more convenient to install with the covering sleeve, and can comprehensively protect the local parts of the fiber pigtail that are susceptible to bending and wear.

[0007] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a wear-resistant single-mode dual-optical pigtail, including a pigtail body, a covering sleeve is arranged on the outside of the pigtail body, the outer sleeve of the covering sleeve is provided with a slidable wear-resistant part, the wear-resistant part includes a middle rubber sleeve, a protective spring and a side rubber sleeve, the middle rubber sleeve and the side rubber sleeve are both sleeved on the covering sleeve, the number of the side rubber sleeves is two and they are respectively located on both sides of the middle rubber sleeve, a protective spring located between the middle rubber sleeve and the side rubber sleeve is provided in the gap sleeve on the covering sleeve, the two ends of the protective spring are respectively connected with the middle rubber sleeve and the side rubber sleeve, and under the clamping action of the protective spring, the side rubber sleeve and the covering sleeve are damped and slidably matched.

[0008] Furthermore, the inner diameters of the middle rubber sleeve and the side rubber sleeve are larger than the outer diameter of the covering sleeve, and the outer peripheral walls of the middle rubber sleeve and the side rubber sleeve are respectively provided with an annular groove 1 and an annular groove 2, and the two ends of the protective spring are fixedly connected with a clamping ring 1 and a clamping ring 2 which are respectively engaged with the annular groove 1 and the annular groove 2.

[0009] Furthermore, the two ends of the middle rubber sleeve and the side rubber sleeve are respectively provided with a conical guide surface one and a conical guide surface two, the outer diameter of the small end of the conical guide surface one is smaller than the inner hole diameter of the retaining ring one, and the diameter of the small end of the conical guide surface two is smaller than the inner hole diameter of the retaining ring two.

[0010] Furthermore, the protective spring is a conical helical spring structure and its large end faces the middle rubber sleeve.

[0011] Furthermore, the middle rubber sleeve is divided into a left rubber sleeve and a right rubber sleeve from the middle, the left rubber sleeve and the right rubber sleeve are connected by snap-fitting, and the outer peripheral walls of the left rubber sleeve and the right rubber sleeve are both provided with the annular slot 1.

[0012] Furthermore, a clamping hole is provided at one end of the left rubber sleeve, and a T-shaped clamping head adapted to the clamping hole is fixedly connected to one end of the right rubber sleeve.

[0013] Furthermore, a layer of silicone is bonded to the inner walls of the middle rubber sleeve and the side rubber sleeve.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. In the utility model, a wear-resistant part is provided which is composed of a middle rubber sleeve, a side rubber sleeve and a spring and is sleeved on the outside of the covering sleeve. By arranging the side rubber sleeve to be a structure in which the side rubber sleeve is squeezed by the protective spring and then slides with the covering sleeve in a damping manner, the wear-resistant part can be easily moved on the covering sleeve after the side rubber sleeve and the spring are separated, and the wear-resistant part can effectively prevent slipping after the side rubber sleeve and the protective spring are connected, thereby protecting the covering sleeve from local squeezing and wear.

[0016] 2. In the utility model, the middle rubber sleeve and the side rubber sleeve are both engaged with the protective spring. After the protective spring is separated from the middle rubber sleeve and the side rubber sleeve, the middle rubber sleeve and the side rubber sleeve are gap-matched with the covering sleeve, thereby making the assembly of the wear-resistant part and the covering sleeve more convenient.

[0017] 3. In the utility model, the protective spring, middle rubber sleeve and side rubber sleeve can protect the covering sleeve from bending, extrusion and wear, and the protection and wear resistance are stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the wear-resistant part of a wear-resistant single-mode dual-optical pigtail of the utility model after explosion expansion;

[0019] Figure 2 It is a schematic diagram of the combination of the wear-resistant part and the pigtail body of a wear-resistant single-mode dual-optical pigtail of the utility model;

[0020] Figure 3 The utility model is a schematic diagram of a middle rubber sleeve of a wear-resistant single-mode dual-optical pigtail after being disassembled.

[0021] In the figure: 1. Pigtail body; 11. Covering sleeve; 2. Wear-resistant part; 21. Middle rubber sleeve; 201. Left rubber sleeve; 2011. Clamping hole; 202. Right rubber sleeve; 2021. T-type clamping head; 211. Annular clamping groove 1; 212. Conical guide surface 1; 22. Protective spring; 221. Snap ring 1; 222. Snap ring 2; 23. Side rubber sleeve; 231. Annular clamping groove 2; 232. Conical guide surface 2; 3. Silicone. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] Embodiment 1:

[0024] See also Figures 1 to 3The utility model provides a technical solution: a wear-resistant single-mode dual-optical pigtail, comprising a pigtail body 1, a sheathing sleeve 11 is arranged on the outside of the pigtail body 1, the structure inside the sheathing sleeve 11 adopts the structure in the patent literature mentioned in the background technology, and a slidable wear-resistant part 2 is arranged on the outside of the sheathing sleeve 11. The technical solution of the present invention is mainly to improve the structure of the defects of the wear-resistant part 2 in the prior art.

[0025] In the present technical solution, the wear-resistant part 2 mentioned above includes a middle rubber sleeve 21, a protective spring 22 and a side rubber sleeve 23. The middle rubber sleeve 21 and the side rubber sleeve 23 are both sleeved on the covering sleeve 11. There are two side rubber sleeves 23 and they are respectively located on both sides of the middle rubber sleeve 21. A protective spring 22 located between the middle rubber sleeve 21 and the side rubber sleeve 23 is sleeved in the covering sleeve 11. The two ends of the protective spring 22 are respectively connected with the middle rubber sleeve 21 and the side rubber sleeve 23. At this time, the protective spring 22 protects the covering sleeve 11 passing therein from pressure and contact wear. The middle rubber sleeve 21 and the covering sleeve 11 are clearance-matched. That is to say, due to the isolation effect of the protective spring 22, the covering sleeve 11 therein will not be squeezed and flattened and contact-worn. The middle rubber sleeve 21 and the side rubber sleeve 23 play the role of supporting and positioning the protective spring 22, so as to prevent the protective spring 22 from squeezing the covering sleeve 11 or reduce the force of squeezing the covering sleeve 11.

[0026] Under the clamping action of the protective spring 22, the side rubber sleeve 23 and the covering sleeve 11 are matched in a damping sliding manner. The damping here means that the side rubber sleeve 23 is in a state of extruding the covering sleeve 11. In this state, the side rubber sleeve 23 will not slide along the covering sleeve 11 easily, so that the wear-resistant part 2 can stay stably at a certain position of the covering sleeve 11.

[0027] Specifically, the inner diameters of the middle rubber sleeve 21 and the side rubber sleeve 23 are both larger than the outer diameter of the covering sleeve 11. This arrangement allows the separate middle rubber sleeve 21 and the side rubber sleeve 23 to slide freely on the covering sleeve 11, and this arrangement makes the assembly of the disassembled wear-resistant part 2 and the covering sleeve 11 more convenient.

[0028] An annular groove 1 211 and an annular groove 231 are respectively provided on the outer peripheral walls of the middle rubber sleeve 21 and the side rubber sleeve 23. Both ends of the protective spring 22 are fixedly connected with a snap ring 1 221 and a snap ring 222 which are respectively engaged with the annular groove 1 211 and the annular groove 231. When the snap ring 222 is inserted into the annular groove 231, the annular groove 231 on the side rubber sleeve 23 is squeezed. At this time, the side rubber sleeve 23 will squeeze the covering sleeve 11, increasing the friction resistance between the two, so that the wear-resistant part 2 can stay at a fixed point on the covering sleeve 11.

[0029] In this embodiment, a conical guide surface 1 212 and a conical guide surface 232 are respectively provided at both ends of the middle rubber sleeve 21 and the side rubber sleeve 23. The outer diameter of the small end of the conical guide surface 1 212 is smaller than the inner diameter of the retaining ring 1 221, and the diameter of the small end of the conical guide surface 232 is smaller than the inner diameter of the retaining ring 222. The functions of the conical guide surface 1 212 and the conical guide surface 232 are to reduce the resistance of the retaining ring 1 221 and the retaining ring 222 to the connection with the annular groove 1 211 and the annular groove 231 respectively.

[0030] In this embodiment, the protective spring 22 is a conical helical spring structure and its large end faces the middle rubber sleeve 21. This arrangement is due to the middle part of the wear-resistant part 2 being in a large hollow state. Therefore, when the pigtail is bent, the two sections of the protective spring 22 on the wear-resistant part 2 can effectively prevent the pigtail from excessive bending. In addition, this arrangement can effectively prevent the protective spring 22 from docking with the covering sleeve 11 therein.

[0031] In this embodiment, a layer of silica gel 3 is bonded to the inner circumferential walls of the middle rubber sleeve 21 and the side rubber sleeve 23 . The function of the silica gel 3 is to increase the resistance generated when the middle rubber sleeve 21 and the side rubber sleeve 23 contact the covering sleeve 11 .

[0032] Embodiment 2:

[0033] See also Figure 3 The difference between this embodiment and embodiment 1 is that the middle rubber sleeve 21 is divided into a left rubber sleeve 201 and a right rubber sleeve 202 from the middle, and the left rubber sleeve 201 and the right rubber sleeve 202 are connected by snapping, and the outer peripheral walls of the left rubber sleeve 201 and the right rubber sleeve 202 are both provided with an annular slot 211, that is, the middle rubber sleeve 21 can be split into the left rubber sleeve 201 and the right rubber sleeve 202. This arrangement enables a wear-resistant part 2 to be disassembled into two protective parts with wear-resistant and protective functions. This arrangement is suitable for the situation where two parts of the pigtail in use need pressure-resistant and wear-resistant protection. There is no need to add a wear-resistant part 2 on site, thereby improving the ability of the pigtail to cope with the external installation environment.

[0034] In this embodiment, a clamping hole 2011 is provided at one end of the left rubber sleeve 201, and a T-shaped clamping head 2021 adapted to the clamping hole 2011 is fixedly connected to one end of the right rubber sleeve 202. This arrangement makes the docking and disassembly operations of the left rubber sleeve 201 and the right rubber sleeve 202 more convenient and labor-saving.

[0035] Working principle: When in use, several wear-resistant parts 2 are split and installed on the outside of the covering sleeve 11 of the pigtail body 1. At this time, the split wear-resistant parts 2 can slide freely on the outside of the covering sleeve 11. When the covering sleeve 11 partially needs pressure resistance and wear resistance protection, the middle rubber sleeve 21, side rubber sleeve 23 and protective spring 23 that constitute a single wear-resistant part 2 are pushed to the part that needs pressure resistance and wear resistance, and then the protective spring 22 is manually controlled to connect with the side rubber sleeve 23 and the middle rubber sleeve 21. The assembled wear-resistant part 2 will stay stably on the covering sleeve 11 due to the extrusion effect of the side rubber sleeve 23, and the protective spring 22 is used to perform pressure resistance, bending resistance and wear resistance protection on the local part of the pigtail body 1.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A wear-resistant single-mode dual-optical pigtail, comprising a pigtail body (1), the outside of which is provided with a covering sleeve (11), the outer sleeve of which is provided with a slidable wear-resistant portion (2), characterized in that: The wear-resistant part (2) comprises a middle rubber sleeve (21), a protective spring (22) and a side rubber sleeve (23); the middle rubber sleeve (21) and the side rubber sleeve (23) are both sleeved on the covering sleeve (11); there are two side rubber sleeves (23) and they are respectively located on both sides of the middle rubber sleeve (21); a protective spring (22) located between the middle rubber sleeve (21) and the side rubber sleeve (23) is sleeved in a gap on the covering sleeve (11); the two ends of the protective spring (22) are respectively connected to the middle rubber sleeve (21) and the side rubber sleeve (23); under the clamping action of the protective spring (22), the side rubber sleeve (23) and the covering sleeve (11) are damped and slidably matched.

2. The wear-resistant single-mode dual-optical pigtail according to claim 1, characterized in that: The inner diameters of the middle rubber sleeve (21) and the side rubber sleeve (23) are both larger than the outer diameter of the covering sleeve (11); the outer peripheral walls of the middle rubber sleeve (21) and the side rubber sleeve (23) are respectively provided with an annular clamping groove 1 (211) and an annular clamping groove 2 (231); and the two ends of the protective spring (22) are fixedly connected with a clamping ring 1 (221) and a clamping ring 2 (222) which are respectively engaged with the annular clamping groove 1 (211) and the annular clamping groove 2 (231).

3. The wear-resistant single-mode dual-optical pigtail according to claim 2, characterized in that: The two ends of the middle rubber sleeve (21) and the side rubber sleeve (23) are respectively provided with a conical guide surface one (212) and a conical guide surface two (232), the outer diameter of the small end of the conical guide surface one (212) is smaller than the inner hole diameter of the retaining ring one (221), and the diameter of the small end of the conical guide surface two (232) is smaller than the inner hole diameter of the retaining ring two (222).

4. The wear-resistant single-mode dual-optical pigtail according to claim 3, characterized in that: The protection spring (22) is a conical helical spring structure and its large end faces the middle rubber sleeve (21).

5. The wear-resistant single-mode dual-optical pigtail according to claim 4, characterized in that: The middle rubber sleeve (21) is divided into a left rubber sleeve (201) and a right rubber sleeve (202) from the middle, and the left rubber sleeve (201) and the right rubber sleeve (202) are connected by snapping, and the outer peripheral walls of the left rubber sleeve (201) and the right rubber sleeve (202) are both provided with the annular snap groove 1 (211).

6. The wear-resistant single-mode dual-optical pigtail according to claim 5, characterized in that: One end of the left rubber sleeve (201) is provided with a clamping hole (2011), and one end of the right rubber sleeve (202) is fixedly connected with a T-shaped clamping head (221) adapted to the clamping hole (2011).

7. The wear-resistant single-mode dual-optical pigtail according to claim 1, characterized in that: A layer of silica gel (3) is bonded to the inner circumferential walls of the middle rubber sleeve (21) and the side rubber sleeve (23).

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