Improved pressure pad structure of optical fiber cutting knife

Abstract

The improved pressure pad structure of the optical fiber cutting knife comprises an upper pressure pad and a lower pressure pad, each of the upper pressure pad and the lower pressure pad comprises a pressure pad base and a rubber pad, the pressure pad bases are provided with positioning grooves, the rubber pads are located on the positioning grooves, the end face parts of the rubber pads are arc-shaped, and the arc-shaped end face parts of the upper pressure pad and the lower pressure pad are matched with each other. The beneficial effects of the utility model are that: 1, the pressure pad adopts the parabolic cambered surface, the curvature enables the contact points of the optical fiber and the cambered surface to be increased, and the effective friction area is increased, so that the optical fiber is clamped more tightly; 2, when rubber is aged to generate salient points, the upper pressure pad and the lower pressure pad are cambered surfaces and are staggered up and down, so that the optical fiber can be compressed, the influence of the salient points can be filtered out, and the compression effect of long-term use is improved; and 3, when small objects exist on the rubber surface, the optical fiber pressing effect is not influenced.

Description

Technical Field

[0001] This utility model belongs to the field of fiber optic cleaver technology, specifically relating to an improved pressure pad structure for fiber optic cleavers. Background Technology

[0002] During the fiber optic fusion splicing process, a fiber optic cleaver is required to flatten the cross-section of the fiber core before it can be used for cold splicing and discharge splicing.

[0003] A typical fiber optic cleaver generally includes a base, a top cover, pressure pads, and a cleaver blade. The cleaver blade is mounted on the base. Upper and lower pressure pads are located on both sides of the cleaver on the top cover and the base, for a total of four pressure pads. During the process of achieving a flat fiber core cross-section, the top cover is pressed down so that the upper pressure pad presses the fiber onto the lower pressure pad, thereby tightening the fiber. Then, the cleaver blade cuts a fine slit in the outer layer of the fiber surface. Because the fiber core is in a state of being tightened by the upper and lower pressure pads on both sides, the anvil of the top cover pops out downwards, finally breaking the fiber core at the slit, forming a flat cross-section.

[0004] After prolonged use, if the pressure pad deforms, the rubber pad ages, or there are foreign objects between the upper and lower pressure pads, gaps will form between the upper and lower pressure pads, making it impossible to press the optical fiber tightly; this will affect the flatness of the optical fiber cross-section and the process quality. Summary of the Invention

[0005] To address the problems mentioned in the background art, this utility model provides an improved fiber optic cleaver pressure pad structure. By designing the upper and lower pressure pads as staggered arc shapes, the problem of uneven pressure pads causing the fiber core to not be compressed is solved.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An improved fiber optic cleaver pressure pad structure is characterized in that the pressure pad structure includes an upper pressure pad and a lower pressure pad, each of the upper and lower pressure pads including a pressure pad base and a rubber pad, the pressure pad base being provided with a positioning groove, the rubber pad being located on the positioning groove, the end face of the rubber pad being arc-shaped, and the arc shapes of the end faces of the upper and lower pressure pads matching.

[0008] Preferably, the end face of the rubber pad includes a flat portion and a curved portion, wherein the curved portion is a parabolic arc surface; the end face of the pressure pad base matches the rubber pad.

[0009] Compared with the prior art, the beneficial effects of this utility model are: 1. The pressure pad adopts a parabolic arc surface. This curvature increases the number of contact points between the optical fiber and the arc surface, and the normal force direction of each contact point is towards the center of the arc surface, which can disperse the external force to a wider area and increase the effective friction area, thereby clamping the optical fiber more tightly; 2. When the rubber ages and produces bumps, since both the upper and lower pressure pads are arc surfaces and the structure is staggered, the optical fiber can still be pressed tightly, and the influence of the bumps can be filtered out, improving the pressing effect for long-term use; 3. When there are small objects on the rubber surface, it does not affect the pressing effect of the optical fiber. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this utility model, used together with the embodiments of this utility model to explain this utility model, and do not constitute a limitation on this utility model. In the drawings:

[0011] Figure 1 This is a schematic diagram of the existing fiber optic cleaver structure of this utility model;

[0012] Figure 2 This is a three-dimensional structural diagram of the pressure pad device of this utility model;

[0013] Figure 3 This is a side view of the pressure pad device of this utility model.

[0014] In the diagram: 11. Upper pressure pad; 12. Lower pressure pad; 101. Pressure pad base; 102. Rubber pad; 103. Flat part; 104. Curved part. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1 This is a commonly used fiber optic cleaver in the prior art, comprising a base, a top cover, and a cleaver blade. The cleaver blade is installed inside the base, and the top cover is hinged to the base. Pressure pad structures are provided on both sides of the cleaver blade and at corresponding positions on the pressure plate.

[0017] The pressure pad structure is divided into an upper pressure pad 11 and a lower pressure pad 12. The upper pressure pad 11 is installed on the upper cover, and the lower pressure pad 12 is installed on the base.

[0018] Specifically, both the upper pressure pad 11 and the lower pressure pad 12 include a pressure pad base 101 and a rubber pad 102. The pressure pad base 101 is provided with a positioning groove, and the rubber pad 102 is located on the positioning groove. The end face of the rubber pad 102 is arc-shaped, and the arc shapes of the end faces of the upper pressure pad 11 and the lower pressure pad 12 match, thereby achieving upper and lower interlocking.

[0019] The end face of the rubber pad 102 includes a flat portion 103 and a curved portion 104. The flat portion 103 is located on the side closer to the cutting blade, and the curved portion 104 is located on the side away from the cutting blade. The curved portion 104 is a parabolic arc surface. The end face shape of the pressure pad base 101 matches that of the rubber pad 102. The curved portion 104 is used to increase the clamping effect, and the flat portion 103 ensures that the optical fiber remains horizontal during cutting, preventing the cut surface from being perpendicular to the optical fiber.

[0020] In use, place the optical fiber between the upper pressure pad 11 and the lower pressure pad 12, press the upper cover down to press the upper and lower pressure pads together, thereby pressing and tightening the optical fiber. Then use a cutting blade to cut a fine slit on the outer layer of the optical fiber surface. Since the fiber core is in a state of being tightened by the upper and lower pressure pads on both sides, the anvil block of the upper cover pops down, finally breaking the fiber core at the cut, forming a flat cross-section.

[0021] The curvature of the parabolic arc surface of the curved section 104 increases the number of contact points between the optical fiber and the arc surface, and the normal force direction of each contact point is towards the center of the arc surface. This design is similar to "wedge force amplification". By superimposing the normal force at multiple points, the external force can be dispersed to a wider area, while increasing the effective friction area, making the friction force distribution more uniform, and the normal force direction is closer to the tension direction, which can transmit the external force more efficiently.

[0022] When the rubber ages and develops bumps, the upper and lower pressure pads, being curved surfaces with an alternating structure, can still compress the optical fiber and filter out the effects of the bumps, thus improving the compression effect over long-term use.

[0023] It should be noted that the end face of the rubber pad 102 can also be designed with wavy, concave-convex, or sloping shapes and structures to better compress the bare fibers.

[0024] Finally, it should be noted that the above descriptions are merely preferred embodiments of this utility model and are not intended to limit the utility model. The selection and detailed description of these embodiments in this specification are for the purpose of better explaining the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An improved fiber optic cleaver pressure pad structure, characterized in that, The pressure pad structure includes an upper pressure pad (11) and a lower pressure pad (12). Both the upper pressure pad (11) and the lower pressure pad (12) include a pressure pad base (101) and a rubber pad (102). The pressure pad base (101) is provided with a positioning groove, and the rubber pad (102) is located on the positioning groove. The end face of the rubber pad (102) is arc-shaped, and the arc shapes of the end faces of the upper pressure pad (11) and the lower pressure pad (12) match.

2. The improved fiber optic cleaver pressure pad structure according to claim 1, characterized in that, The end face of the rubber pad (102) includes a flat part (103) and a curved part (104), the curved part (104) being a parabolic arc surface; the end face of the pressure pad base (101) matches the rubber pad (102).

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