Optical fiber clamp using warping plate

Abstract

The utility model provides an optical fiber clamp using a warping plate. Comprising a clamp base, a warping plate, a warping plate shaft and the like. The base is provided with a cavity, the warping plate is assembled in the cavity of the base in a pivot mode, the warping plate can rotate in the cavity, and the rotating face is consistent with the axis direction of the placed optical fiber. Planes with different heights are processed on the upward surface of the warping plate, and when optical fibers with different outer diameters are placed, the outer diameters of the optical fibers are downwards matched with the planes with different heights, so that when the optical fiber clamp clamps the optical fibers with different outer diameters, the fiber core part is always in the central position of the coaxial line, and the collimation of the clamped optical fiber core is ensured; the problem that fiber cores cannot be ensured to be coaxial and centered in the clamping process of optical fibers with different outer diameters and types through an existing optical fiber clamp is solved. The optical fiber clamp can be used as an optical fiber fusion splicer, an optical fiber cutting knife, an optical fiber coupler and the like which need to be matched with optical fiber equipment with different types and different outer diameters conveniently.

Description

Technical Field

[0001] The utility model is an optical fiber clamping and fixing device, which relates to the field of optical fiber equipment accessories, in particular to a matching device for optical fiber fusion splicers, optical fiber cutters, optical fiber couplers and other equipment. Technical Background

[0002] Optical fiber has been widely used in communications, medical treatment, sensors, navigation, and other fields. The commonly used single-mode communication optical fiber has a diameter of 0.125 mm (called bare fiber), the outer diameter of the protective layer of the terminated fiber pigtail is 0.9 mm, and the cross-sectional size of the protective layer of the butterfly cable (also called sheathed cable) is 3×2 mm. The center position of the internal axis of these optical cables or optical fibers is a standard single-mode optical fiber. In daily construction, ordinary optical cable splicing (bare fiber to bare fiber), termination splicing (bare fiber to pigtail or sheathed cable to pigtail), fiber-to-the-home butterfly cable splicing (sheathed cable to sheathed cable), that is, connection between optical fibers of different outer diameters are often required. This requires that the optical fiber fusion splicer used as the splicing equipment can clamp these different optical fiber cores to the same center position on the axis, so as to facilitate the next step of alignment. Fiber cleavers cut optical fibers, fiber couplers align optical fibers, etc., also have such requirements for fiber clamps when dealing with optical fibers of different outer diameters.

[0003] The diameters of large-core optical fibers that have emerged in recent years are mostly between 0.3 and 1.2 mm. Due to different internal structures and varying diameters, the requirements for cutting and splicing are also high. To accommodate these different core diameters, optical fiber clamps usually replace the V-groove inserts in the clamp base to meet the clamping requirements. Although this meets the coaxial centering requirement, it lacks operational convenience.

[0004] In short, the optical fiber clamp is an essential tool for fixing optical fibers. It is a prerequisite for the next step of optical fiber operation and is widely used.

[0005] Fiber optic clamps require, on the one hand, to stably clamp the optical fiber to prevent displacement during subsequent applications; on the other hand, they must also maintain the optical fiber's structural alignment and minimize stress changes caused by the clamping force on the optical fiber. Third, when clamping optical fibers of different outer diameters, the fiber cores must be coaxially centered. Based on these technical requirements, existing fiber optic clamp designs have the following problems:

[0006] 1. Taking the fiber fusion splicer fixture as an example, the fiber placement surface of the fixture base is designed with a fixed height. When placing optical fibers of different outer diameters, the positions of the optical fiber core axes are different, and the axes of optical fibers of different outer diameters cannot be unified in the direction of a central axis. There are also improvement plans to replace the hard material base placement surface with elastic materials such as rubber, but the above problems still exist.

[0007] 2. While the existing method of replacing different fiber V-groove inserts on the base solves the problem of centering the axes of different optical fibers, it requires V-groove inserts of different sizes. This method is costly, difficult to carry, and difficult to replace, and requires high operational requirements.

[0008] 3. The pressing part of the upper cover of the existing optical fiber clamp is mostly designed as an elastic structure, that is, the pressure strip is supported by a spring, which can flexibly adapt to the upper surface of different optical fiber outer diameters. However, this structure also easily causes the elastic pressure strip to tilt, resulting in uneven pressure distribution, causing irregular effects on the optical fiber stress and reducing the clamp holding effect.

[0009] 4. Taking the fiber optic cutting knife fixture as an example, in order to achieve the clamping of optical fibers of different outer diameters, the optical fibers of different outer diameters are horizontally divided on the surface of the knife fixture. This cannot achieve the uniform axis centering of the optical fiber cores of different outer diameters, resulting in inconsistent positions on the cutting knife rubber pad during optical fiber cutting, affecting the cutting quality. Summary of the Invention

[0010] In view of the above-mentioned issues, the purpose of the present utility model is to provide a fiber optic clamp using a seesaw. Its core value is: by adjusting the seesaw, the height of the fiber placement surface can be adjusted in the downward direction of the base, thereby solving the problem that the clamp base cannot adapt to different optical fiber outer diameters. In combination with the existing elastic pressure strip on the upper cover, it solves the problem of clamping optical fibers with different outer diameters in common optical fiber equipment such as optical fiber fusion splicers, optical fiber cutters, optical fiber couplers, and other common equipment applications.

[0011] Technical Solution

[0012] The optical fiber clamp using a seesaw comprises a base, a seesaw, and a seesaw shaft;

[0013] The base is provided with a cavity along the direction in which the optical fiber is placed, and a hole is provided on a side wall of the cavity;

[0014] The seesaw is a strip-shaped structure with a rectangular cross section and a hole on the side. The seesaw axis passes through the hole and the hole on the side wall of the cavity. The seesaw is assembled in the base cavity in a pivotal manner, and the seesaw rotates around the seesaw axis.

[0015] The upward side of the seesaw is processed with planes at different distances from the axis of the seesaw shaft, and the planes are parallel to the axis of the seesaw shaft in the axial direction. When the seesaw rotates to different planes upward, they are at different distances from the base surface;

[0016] The upward side plane of the seesaw is provided with a groove for placing the optical fiber along the optical fiber placement direction;

[0017] The rocker is also provided with an elastic support device and a side locking device;

[0018] The elastic support device includes but is not limited to magnets and springs in a mutually exclusive relationship. The elastic device is assembled between the base and the seesaw to support one end of the seesaw upwards.

[0019] The side locking device is a positioning screw with an elastic steel ball on its head, which is installed on the side of the base cavity. When the rocker is rotated to adjust the rocker, the positioning screw locks the position of the rocker from the side of the base cavity, and is unlocked when further external force is applied to the rocker.

[0020] The clamp also has an upper cover;

[0021] An elastic pressure strip is assembled inside the upper cover and supported by a compression spring. When pressing optical fibers with different outer diameters, the compression spring contracts and the surface of the pressure strip adapts to the outer size of the pressed optical fiber.

[0022] The utility model has the following beneficial effects

[0023] 1. The base rocker allows the fiber optic clamp base to adjust the height of the fiber support surface downward, adapting to the clamping of optical fibers of different outer diameters while ensuring that the fiber core diameter is always coaxially centered.

[0024] 2. Compared with the method of replacing V-groove inserts to achieve optical fiber coaxial centering, the utility model is simple to operate, does not require replacing inserts, and reduces parts.

[0025] 3. Since the core diameters of optical fibers of different outer diameters are coaxially centered, the elastic pressure strips on the upper cover are easier to press and hold flat, and the pressing force has little effect on the stress of the optical fiber and is evenly distributed.

[0026] 4. In the application of the optical fiber cleaver, the utility model unifies the optical fiber cutting position of the horizontal section in the center, so that optical fibers of different outer diameters are kept in the same position on the optical fiber cleaver pad when cutting, thereby improving the stability of the cutting quality of the optical fiber cleaver. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following further describes the embodiments of the present invention in conjunction with the accompanying drawings;

[0028] Figure 1 This is a front view of a fiber optic clamp using a seesaw;

[0029] Figure 2 This is a view of the positioning screw positions of the fiber optic clamp base using a rocker;

[0030] Figure 3 This is a cross-sectional view of a fiber optic clamp using a seesaw to clamp a bare fiber;

[0031] Figure 4 This is a cross-sectional view of a fiber optic clamp using a seesaw to clamp a butterfly-shaped optical cable;

[0032] Figure 5 This is a view of a fiber optic clamp using a rocker to hold a pigtail;

[0033] Figure 6 This is a fiber optic clamp that uses a seesaw to hold a butterfly-shaped optical cable.

[0034] Figure 7 This is a view of a fiber optic clamp using a seesaw to clamp a butterfly-shaped optical cable;

[0035] Figure 8 This is a fiber optic clamp using a rocker plate in a small fiber optic cleaver clamp application view;

[0036] Reference numerals

[0037] 1. Base, 11. Base fixing screw hole, 12. Base butterfly cable support protrusion, 13. Base positioning screw, 14. Base rocker magnet, 15. Base magnet, 2. Rocker, 21. Rocker bare fiber / pigtail fixing surface, 22. Rocker butterfly cable fixing surface, 23. Rocker shaft, 24. Rocker magnet, 25. Bare fiber placement guide groove, 3. Top cover, 31. Elastic pressure strip, 32. Rubber pad, 33. Top cover magnet, 4. Bare fiber, 5. Pigtail, 6. Butterfly cable, 7. Fiber optic cleaver fixture base, 71. Fiber optic cleaver fixture pressure plate. DETAILED DESCRIPTION

[0038] Figure 1 This is a main view of a fiber optic clamp using a seesaw. The seesaw is a strip-shaped structure with a hole on the side. Its cross-section is mostly rectangular. It can also be made into an irregular shape if there are special requirements, such as reducing weight. It is pivotally installed in the slot of the base 1 through the seesaw axis 23 and can rotate around the seesaw axis 23. When the right side is upward, the bare fiber / pigtail fixing surface of the seesaw 21 is flush with the base surface with no height difference. At this time, the bare fiber 4 is placed in the slot of the seesaw 2. The core of the bare fiber 4 is centered on the slot axis and flush with the base surface with no height difference. Cover 3. Upper cover, 33. Upper cover magnet, and 15. base magnet are attracted. At this time, 31. elastic pressure strip, under the action of the spring force on the back, faces downward surface and fits upward outer surface of 4. bare optical fiber to complete the clamping and fixation of 4. bare optical fiber; 32. rubber pad is used to press and hold 4. bare optical fiber at the outlet to further standardize the alignment of optical fiber; at this time, 22. seesaw butterfly-shaped optical fiber fixing surface, located on the other side of 23. seesaw axis, is in a low position and does not participate in clamping the bare optical fiber; 11. There are two screw fixing holes in the base, which are used to fix the entire clamp to the optical fiber fusion splicer or other equipment that needs to clamp optical fiber.

[0039] Figure 2This is a view of the positioning screws in the base of a fiber optic clamp using a seesaw. The seesaw has a circular groove at the corresponding position on the head (right side of the diagram) of the 13th base positioning screw. The 13th base positioning screw has a standard elastic steel ball positioning screw head, which is installed in the hole shown in the diagram. When the seesaw 2 is moved to the positioning position under the action of external force, the elastic steel ball advances and engages with the groove, locking the seesaw 2 in place. When external force is continued to be applied in the same or opposite direction, the elastic steel ball retracts under pressure, releasing the lock.

[0040] Figure 3 This is a cross-sectional view of a fiber optic clamp using a seesaw to clamp a bare fiber; the right picture is a cross-sectional view of the left picture AA. Since the upper cover of the clamp is an existing mature technology, the elastic pressure strip supported by the compression spring fixes the outer side of the optical fiber downward, so this utility model will not be elaborated in detail; the 24. seesaw magnet and the 14. base seesaw magnet installed on the 1. base are in a mutually exclusive relationship, and the mutual repulsive force pushes the 2. seesaw upward. In addition to the magnets in a mutually exclusive relationship, the parts that push upward can also be selected from compression springs, electromagnets, etc. The utility model uses magnets as an example to illustrate that the 2. seesaw can be clearly seen. The 21st seesaw bare fiber / pigtail fixing surface is flush with the surface of the 1st base. The 4th bare fiber is placed in the groove of this fixing surface. This can flatten and hold the fiber, reducing irregular changes in internal stress and resulting deformation of the fiber due to uneven pressure distribution, which affects the fiber alignment. At this time, the 22nd seesaw butterfly-shaped fiber fixing surface is at the left low position of the 23rd seesaw axis, not in contact with the placed fiber, and does not participate in the pressure holding of the 4th bare fiber. The 13th is the base positioning screw. At this time, the elastic steel ball on the head is in a retracted state and is not in the 2nd seesaw positioning groove.

[0041] Figure 4It is a cross-sectional view of the state of a fiber optic clamp using a seesaw to clamp a butterfly optical cable; the right picture is the AA cross-sectional view of the left picture. For the sake of convenience, this picture shows 2. the seesaw, which is in the state of placing the butterfly optical cable, and no butterfly optical cable is placed; 2. the seesaw, supported by 23. the seesaw shaft, is lifted upward in the direction of the arrow in the figure. The specific execution method of this process is that the operator directly lifts the tail of 2. the seesaw upward, or presses down on the other end to achieve it. If you need to switch to another state, just reverse the operation. This operation is simple and convenient and does not require tools; at this time, 22. the seesaw butterfly optical fiber fixing surface is lifted upward and is in a high position, and the angle between the surface and 1. the base surface is reduced (usually reduced to zero degrees. Some special applications will require a certain tilt angle. This article takes zero degrees as an example). It can be seen that 22. the seesaw butterfly optical fiber fixing surface, although in a high position, is lower than 1. the base surface. A certain distance, since the standard size of the butterfly cable cross section is 3 mm wide and 2 mm high, the optical fiber clamp is clamped in the height direction, so the 22. seesaw butterfly optical fiber fixing surface is usually half the height, that is, 1 mm, lower than the 1. base surface. In this way, when the butterfly optical cable is placed on this surface, the center position of the optical cable is located at the center position of the cross section, that is, the optical fiber placement position is flush with the 1. base surface and in the same plane, so the same result as pressing the bare optical fiber is achieved, coaxial centering, and does not affect the optical fiber stress; it can be seen that at this time, the 14. base seesaw magnet and the 24. seesaw magnet are still in a mutually exclusive state, but due to the 13. base positioning screw, the elastic steel ball on the head is engaged with the circular groove at the corresponding position on the other side of the 2. seesaw, which plays a locking role; at this time, the 21. seesaw bare fiber / pigtail fixing surface is in a low position and does not participate in clamping the butterfly optical cable.

[0042] Figure 5 This is a view of a fiber optic clamp using a seesaw to clamp a pigtail; the figure further illustrates the clamping state of 5. pigtail. As shown in the figure, 21. the seesaw bare fiber / pigtail fixing surface is raised around 23. the seesaw axis and is in a high position, flush with the surface of 1. the base. At this time, the pigtail with a protective layer diameter of 0.9 mm after stripping is placed. The outer diameter of the part after stripping the protective layer is 0.125 mm. The 0.9 mm point is placed in the large diameter groove on the left side of 21. the seesaw bare fiber / pigtail fixing surface, and the bare fiber part is extended and placed in the fine groove to complete the placement; when 3. the upper cover is pressed down, 31. the elastic pressure strip fits the outer surface of 5. pigtail to complete the pressure holding.

[0043] Figure 6This is a fiber optic clamp that uses a seesaw to clamp a butterfly cable. The view of the seesaw position; this view illustrates the position and function of 12. The base butterfly cable support protrusion, 25. The bare fiber placement guide groove, as shown in the figure; 2. The seesaw, 22. The seesaw butterfly cable fixing surface, supported by 23. The seesaw shaft, is lifted upward as shown by the arrow and is in a high position. At this time, the clamp is in a butterfly cable clamping state; 21. The seesaw bare fiber / pigtail fixing surface is in a low position downward and is lower than 22. The seesaw butterfly cable fixing surface. For this reason, in this state, there is no supporting structure for placing the butterfly cable on the right side, which can easily cause the cable to collapse at this location after placement, affecting the clamping effect. Therefore, 1. The base is processed at this location with two protrusions with a spacing less than 3 mm from the cable width. The upper height of the protrusion is flush with the 22. The seesaw butterfly cable fixing surface in the high position, and is By leaving 21. the seesaw bare fiber / pigtail fixing surface in the middle of the structure for rotational position, it is possible to achieve the effect of not affecting the high position effect of the 21. seesaw bare fiber / pigtail fixing surface, and also to expose the supporting surface of the butterfly cable when this surface is in a low position; 2. the seesaw, 25. the bare fiber can be placed in the guide groove, and the upward part can be processed into a surface that is flush with the 22. seesaw butterfly cable fixing surface. In this way, when the 21. seesaw bare fiber / pigtail fixing surface is in a low position, as shown in the figure, the 25. bare fiber is placed in the guide groove, and the upper surface and the 21. seesaw bare fiber / pigtail fixing surface together constitute the front and rear supporting surfaces of the butterfly cable. These two structures, used alone or in combination, can solve the front and rear support balance problem of the butterfly cable. In this state, 3. the upper cover, 31. the elastic pressure strip, can normally press and hold the butterfly cable after being pressed down, so that the fiber core of the butterfly cable is coaxially centered.

[0044] Figure 7 This is a view of a fiber optic clamp using a seesaw to hold a butterfly-shaped optical cable; Figure 6 Further intuitive explanation: 2. The seesaw, supported by the 23. seesaw axis, is in a high-position butterfly cable clamping state. The stripped 6. butterfly cable, with the optical fiber wrapped in the center exposed on the right side, is placed on the seesaw. The 6. butterfly cable is placed downward on the 2. seesaw, lower than the 1. base surface, thus ensuring that the optical fiber outlet and the 1. base surface are flush. When the 3. upper cover and the 31. elastic pressure strip press the 6. butterfly cable, it will not affect the optical fiber at the outlet.

[0045] Figure 8This is a view of the application of a fiber optic clamp using a rocker in a small clamp for a fiber optic cutter; the utility model can also be applied to other applications that require a clamp to clamp optical fibers of different sizes, such as a large-core fiber optic cutter, which has the need to clamp optical fibers of different diameters. This figure takes an optical fiber cutter for communication engineering as an example; the optical fiber needs to be fixed and placed in advance before cutting, which not only ensures the alignment of the optical fiber placement, but also provides a certain clamping force for the cut optical fiber, which is conducive to cutting; in order to adapt to optical fibers of different outer diameters, the existing design sets optical fiber placement grooves of different diameters at different positions on the horizontal direction of the optical fiber clamp surface, and places optical fibers of different outer diameters respectively, resulting in different placement positions of optical fibers of different outer diameters on the optical fiber cutter rubber pad, which is likely to affect the optical fiber cutting quality, as shown in this figure; and Figure 1 In comparison, the optical fiber base is replaced with a 7. optical fiber cleaver clamp base that adapts to the appearance and size of the optical fiber cleaver. The 2. rocker is installed in the base cavity through the 23. rocker axis. Unlike the clamp for the fusion splicer, the 71. optical fiber cleaver clamp pressure plate does not have an elastic structure.

Claims

1. An optical fiber clamp using a seesaw, characterized in that; The optical fiber clamp using a seesaw comprises a base, a seesaw, and a seesaw shaft; The base is provided with a cavity along the direction in which the optical fiber is placed, and a hole is opened on the side wall of the cavity; The seesaw is a strip-shaped structure with a rectangular cross section and an opening on the side. The seesaw axis passes through the opening and the opening on the side wall of the cavity. The seesaw is assembled in the base cavity in a pivotal manner, and the seesaw rotates around the seesaw axis. The upward side of the seesaw is processed with planes at different distances from the axis of the seesaw shaft, and the planes are parallel to the axis of the seesaw shaft in the axial direction. When the seesaw rotates to different planes upward, they are at different distances from the base surface; A groove for placing the optical fiber is formed on an upward plane of the seesaw along the optical fiber placement direction.

2. The optical fiber clamp using a seesaw according to claim 1, wherein: The rocker also includes an elastic support device and a side locking device; The elastic support device includes a magnet and a spring in a mutually exclusive relationship. The elastic support device is assembled between the base and the seesaw to support one end of the seesaw upwards. The side locking device is a positioning screw with an elastic steel ball on its head. The positioning screw is installed on the side of the base cavity. When the rocker is rotated to adjust the rocker, the positioning screw locks the position of the rocker from the side of the base cavity. When further external force is applied to the rocker, the lock is released.

3. The optical fiber clamp using a seesaw according to claim 1 or 2, wherein: The fixture further includes an upper cover; An elastic pressure strip is assembled inside the upper cover and supported by a compression spring. When pressing optical fibers with different outer diameters, the compression spring contracts and the surface of the pressure strip adapts to the outer size of the pressed optical fiber.

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