Optical fiber bending mechanism of optical fiber identification instrument

Abstract

The utility model provides an optical fiber bending mechanism of an optical fiber identification instrument, which solves the problem that the optical fiber bending mechanism of the existing optical fiber identification instrument cannot control the bending loss of an optical fiber. The optical fiber bending mechanism of the optical fiber identification instrument comprises a sliding seat arranged in the optical fiber identification instrument in a sliding mode and a power structure used for driving the sliding seat to slide, a convex body is arranged on the sliding seat, an optical fiber placing opening with the width extending in the sliding direction of the sliding seat is formed in the convex body, and two limiting bodies located on the two sides of the convex body respectively are arranged in the optical fiber identification instrument. The optical fiber placed in the optical fiber placing port can form a macro bend under the action of the convex body and the two limiting bodies. The bending radian of the optical fiber is adjusted by changing the position of the sliding seat, and the use effect is good.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of optical fiber identification appearance, and relates to an optical fiber bending mechanism of optical fiber identification appearance. BACKGROUND

[0002] The optical fiber identification appearance is a kind of equipment that can rapidly and accurately identify optical fiber route and show whether there is optical signal passing in optical fiber, the trend of optical signal and relative optical power value under the premise of not damaging optical fiber and not interrupting communication, which adopts macro-bending detection technology with low insertion loss to accurately distinguish optical signal in optical fiber, and is one of essential tools for daily maintenance, rush repair and service splicing of optical fiber line.

[0003] The prior art optical fiber identification appearance needs to replace different adapters to cooperate with optical fibers of different thicknesses, such as patent application 200620040467.X, which discloses an optical fiber identification appearance containing control circuit board, power supply and photoelectric detector and other components.Due to the need to select different adapters according to the thickness of different optical fibers during operation, the user needs to carry multiple adapters, which easily causes the problems of loss and forgetting to carry, and brings great inconvenience to use;And the bending radius of the optical fiber is fixed, and the size of the optical fiber bending loss cannot be controlled. UTILITY MODEL CONTENT

[0004] The utility model aims at the above problems existing in the prior art, and provides an optical fiber bending mechanism of optical fiber identification appearance capable of changing the bending radius of optical fiber.

[0005] The utility model can be realized by the following technical schemes:

[0006] The optical fiber bending mechanism of the optical fiber identification appearance includes a sliding seat slidingly arranged in the optical fiber identification appearance and a power structure for driving the sliding seat to slide, the sliding seat is provided with a convex body, the convex body is provided with an optical fiber placing opening with a width extending along the sliding direction of the sliding seat, the optical fiber identification appearance is provided with two limiting bodies located at the two sides of the convex body respectively, and the optical fiber placed in the optical fiber placing opening can form macro-bending under the action of the convex body and the two limiting bodies.

[0007] When the optical fiber is not placed, the side surface of the limiting body for limiting corresponds to the position of the optical fiber placing opening, so that the optical fiber placed in the optical fiber placing opening is just located at the side surface for limiting of the limiting body, the power structure drives the sliding seat to slide after the optical fiber is placed, the convex body drives the optical fiber to move together, and the optical fiber forms macro-bending under the action of the convex body and the two limiting bodies. Wherein, the macro-bending is a larger bending in the optical fiber.

[0008] In the fiber bending mechanism of the fiber identifier, the fiber placing opening is provided with a guide hole on one side of the macro-bend inner side, a sliding block is slidingly fitted in the guide hole, the inner end of the sliding block is provided with a spring acting on the sliding block, and the sliding block is provided with a third matching curved surface matching the outer shape of the fiber.

[0009] When the outer diameter of the clamped fiber is large, the fiber extrudes the sliding block to move a small distance into the guide hole, and at this time the spring is in a slight compression state; when the outer diameter of the clamped fiber is small, the sliding block will not enter the guide hole. The sliding block can slide along the guide hole to adapt to fibers of different diameters, and the bending curvature formed by the sliding block can meet the fiber bending requirements, and can protect the fiber and prevent the fiber from being damaged by excessive bending or clamping. In the fiber bending mechanism of the fiber identifier, the limiting body is provided with a first limiting surface for limiting one side of the fiber, the first limiting surface is flush with the groove bottom of the fiber placing opening, and the fiber identifier is provided with a limiting structure for limiting the other side of the fiber. The fiber is limited by the first limiting surface and the limiting structure, so that the fiber is always located between the first limiting surface and the limiting structure during bending, and the fiber can only bend in one direction.

[0010] In the fiber bending mechanism of the fiber identifier, the fiber identifier is provided with two support shafts corresponding to the limiting bodies respectively, the limiting bodies are rotatably sleeved on the support shafts, and a traction structure for driving the limiting bodies to rotate around the support shafts when the sliding seat slides is arranged between the sliding seat and the limiting bodies.

[0011] The support shafts extend along the depth direction of the fiber placing opening, and the depth of the fiber placing opening extends along the vertical direction of the sliding direction of the sliding seat. When the limiting bodies rotate around the support shafts, the first limiting surface is driven to rotate, so that the first limiting surface always supports and limits the fiber.

[0012] In the fiber bending mechanism of the fiber identifier, the limiting body is sleeve-shaped and coaxially sleeved on the corresponding support shaft, the limiting body is provided with a supporting block, the first limiting surface is arranged on the supporting block, and the traction structure is arranged between the supporting block and the sliding seat.

[0013] In the fiber bending mechanism of the fiber identifier, the traction structure includes a limiting groove arranged on the convex body and a traction column arranged on the supporting block, the width of the limiting groove extends along the sliding direction of the sliding seat, the traction column is parallel to the support shaft, and the traction column is slidingly fitted in the limiting groove. The sliding seat can drive the limiting body to rotate when the sliding seat moves linearly.

[0014] In the fiber bending mechanism of the fiber identifier, the limiting structure comprises a light shielding cover slidingly arranged in the fiber identifier, the sliding direction of the light shielding cover is same as the sliding direction of the sliding base, a plurality of convex ribs extending along the sliding direction of the light shielding cover are arranged on the side of the light shielding cover facing the sliding base, the convex ribs are provided with second limiting surfaces parallel to the first limiting surface, and the second limiting surfaces are located in the same plane.

[0015] In the fiber bending mechanism of the fiber identifier, the contact between the limiting body and the fiber is provided with a first matching curved surface matched with the shape of the fiber, and the fiber placing opening located on the inner side of the macro-bend is provided with a second matching curved surface matched with the shape of the fiber.

[0016] In the fiber bending mechanism of the fiber identifier, the power structure comprises a motor arranged in the fiber identifier, a gear arranged on the rotating shaft of the motor and a rack arranged on the sliding base, the rack extends along the sliding direction of the sliding base, and the gear is engaged with the rack.

[0017] Compared with the prior art, the fiber bending mechanism of the fiber identifier has the following advantages: the rotating angle of the gear is controlled by the motor, the advancing depth of the rack and the sliding block is controlled, and the purpose of controlling the bending curvature of the fiber is achieved, the control effect is good, the sliding block and the spring are arranged on the side of the fiber placing opening located on the inner side of the macro-bend, so that the fiber of different diameters can be bent, and the application range is wide, the first limiting surface and the second limiting surface are arranged to always ensure the position of the fiber, so that the fiber can be bent into a standard macro-bend. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the fiber bending mechanism provided by the utility model.

[0019] Figure 2 is a structural schematic view of the fiber bending mechanism when the light shielding cover is hidden.

[0020] Figure 3 is a structural schematic view of the fiber bending mechanism when the light shielding cover is hidden.

[0021] Figure 4 is a cooperation schematic view of the sliding base and the limiting body provided by the utility model.

[0022] Figure 5 is a structural schematic view of the light shielding cover provided by the utility model.

[0023] In the diagram, a) macrobend; 1) slide block; 11) protrusion; 12) fiber optic placement port; 13) limiting groove; 14) second mating surface; 2) limiting body; 21) first limiting surface; 22) support block; 23) traction column; 24) first mating surface; 3) light shield; 31) protruding rib; 32) second limiting surface; 4) slider; 41) third mating surface; 5) spring; 6) motor; 7) gear; 8) rack. Detailed Implementation

[0024] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0025] like Figure 1 The fiber optic bending mechanism of the fiber optic identifier shown includes a slide block 1 slidably disposed within the fiber optic identifier and a power structure for driving the slide block 1 to slide. The slide block 1 extends along the length direction (i.e., the front-to-back direction) of the fiber optic identifier, and the sliding direction is also along the length direction of the fiber optic identifier. Figures 1-3 As shown, the power structure includes a motor 6 installed inside the fiber optic identifier, a gear 7 installed on the shaft of the motor 6, and a rack 8 installed on the slide 1. The rack 8 extends along the length of the slide 1. The motor 6 and the gear 7 are located above the slide 1. The gear 7 meshes with the rack 8. The forward and reverse rotation of the motor 6 can drive the gear 7 to rotate in both directions, thereby driving the slide 1 to slide back and forth inside the fiber optic identifier.

[0026] In order to clamp the light, such as Figures 2-4 As shown, the slide 1 has an upwardly extending protrusion 11, and the protrusion 11 has an optical fiber placement port 12 with a width extending in the front-back direction. A limiting body 2 is provided on the left and right sides of the protrusion 11 respectively. The optical fiber placed in the optical fiber placement port 12 can form a macrobend a under the action of the protrusion 11 and the two limiting bodies 2.

[0027] When the optical fiber is not inserted, the side of the limiting body 2 used to limit the optical fiber corresponds to the position of the optical fiber placement port 12, ensuring that the optical fiber inserted into the optical fiber placement port 12 is just located on the side of the limiting body 2 used for limiting. After the optical fiber is placed, the power structure drives the slide 1 to slide, and the protrusion 11 drives the optical fiber to move together. Under the action of the protrusion 11 and the two limiting bodies 2, the optical fiber forms a macro bend a.

[0028] In this embodiment, to achieve the rotation of the limiting body 2, the fiber optic identifier is provided with two support shafts, each corresponding to the limiting body 2. The limiting body 2 is rotatably sleeved on the support shafts. A traction structure is provided between the slide 1 and the limiting body 2 to drive the limiting body 2 to rotate around the support shafts when the slide 1 slides. Specifically, as shown... Figure 4As shown, the limiting body 2 is sleeve-shaped and coaxially sleeved on the corresponding support shaft. The limiting body 2 is provided with a support block 22. The traction structure is provided between the support block 22 and the slide 1. The support block 22 is provided with a first limiting surface 21. The first limiting surface 21 limits the lower side of the light. The first limiting surface 21 is flush with the bottom of the slot of the optical fiber placement port 12. The optical fiber identifier is provided with a limiting structure that limits the upper side of the optical fiber.

[0029] The optical fiber is limited by the first limiting surface 21 and the limiting structure, ensuring that the optical fiber remains between the first limiting surface 21 and the limiting structure when bending, guaranteeing that the optical fiber can only bend in one direction. The support shaft extends vertically, and the depth of the optical fiber placement port 12 extends vertically as well. When the limiting body 2 rotates around the support shaft, it causes the first limiting surface 21 to rotate accordingly, ensuring that the first limiting surface 21 always supports and limits the optical fiber.

[0030] like Figure 4 As shown, the traction structure includes a limiting groove 13 on the protrusion 11 and a traction column 23 on the support block 22. The length of the limiting groove 13 extends in the left-right direction, and the width of the limiting groove 13 extends in the front-back direction. The traction column 23 is parallel to the support shaft, and the traction column 23 is slidably fitted in the limiting groove 13. When the slide block 1 moves linearly, it can drive the limiting body 2 to rotate.

[0031] like Figure 1 and Figure 5 As shown, the limiting structure includes a light-shielding cover 3 slidably disposed within the fiber optic identifier. The sliding direction of the light-shielding cover 3 is the same as the sliding direction of the slide block 1. Several protruding ribs 31 extending along the sliding direction of the light-shielding cover 3 are provided on the side of the light-shielding cover 3 facing the slide block 1. Each protruding rib 31 has a second limiting surface 32 parallel to the first limiting surface 21, and the several second limiting surfaces 32 are located in the same plane. When no optical fiber is inserted, the light-shielding cover 3 is away from the optical fiber placement port 12. After the optical fiber is inserted, the light-shielding cover 3 slides above the optical fiber placement port 12, and the second limiting surfaces 32 limit the upper side of the light beam.

[0032] In order to use optical fibers with different outer diameters, such as Figures 2-4 As shown, the fiber placement port 12 is provided with a guide hole extending in the front-to-back direction on one side of the macrobend a. A slider 4 is slidably fitted in the guide hole, and a spring 5 acting on the slider 4 is provided at the inner end of the slider 4.

[0033] When the outer diameter of the clamped optical fiber is large, the optical fiber squeezes the slider 4, causing the slider 4 to move a short distance into the guide hole. At this time, the spring 5 is in a slightly compressed state. When the outer diameter of the clamped optical fiber is small, the slider 4 will not enter the guide hole. This allows the optical fiber bending mechanism to bend optical fibers of different outer diameters, making it widely applicable.

[0034] To reduce the damage to optical fibers during bending, such asFigure 4 As shown, the contact point between the limiting body 2 and the optical fiber is provided with a first mating surface 24 that is adapted to the shape of the optical fiber, the optical fiber placement port 12 is located inside the macrobend a and is provided with a second mating surface 14 that is adapted to the shape of the optical fiber, and the slider 4 is provided with a third mating surface 41 that is adapted to the shape of the optical fiber.

[0035] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An optical fiber bending mechanism of an optical fiber identifier, characterized by, The utility model provides a kind of optical fiber identification instrument, including slide (1) of sliding in optical fiber identification instrument and power structure for driving slide (1) sliding, the slide (1) is equipped with convex body (11), the convex body (11) is equipped with its width extends along the sliding direction of slide (1) optical fiber placement port (12), optical fiber identification instrument is equipped with two limit body (2) respectively in convex body (11) both sides, optical fiber placed in optical fiber placement port (12) can form macro-bend (a) under the action of convex body (11) and two limit body (2).

2. The fiber bend mechanism of the fiber identifier of claim 1, wherein, The optical fiber placement port (12) is located on one side of the inside of the macro-bend (a) and is provided with a guide hole. A sliding block (4) is slidably fitted in the guide hole. An inner end of the sliding block (4) is provided with a spring (5) acting on the sliding block (4). The sliding block (4) is provided with a third matching curved surface (41) matching the shape of the optical fiber.

3. The fiber bend mechanism of the fiber optic identifier of claim 1, wherein, The limit body (2) is provided with a first limiting surface (21) limiting one side of the optical fiber. The first limiting surface (21) is flush with the groove bottom of the optical fiber placement port (12). The optical fiber identification instrument is provided with a limiting structure limiting the other side of the optical fiber.

4. The fiber bend mechanism of the fiber identifier of claim 3, wherein, The optical fiber identification instrument is provided with two support shafts corresponding to the limit body (2) respectively. The limit body (2) is rotatably sleeved on the support shaft. The slide (1) and the limit body (2) are provided with a traction structure for driving the limit body (2) to rotate around the support shaft when the slide (1) slides.

5. The fiber bend mechanism of the fiber identifier of claim 4, wherein, The limit body (2) is sleeve-shaped and coaxially sleeved on the corresponding support shaft. The limit body (2) is provided with a support block (22). The first limiting surface (21) is arranged on the support block (22). The traction structure is arranged between the support block (22) and the slide (1).

6. The fiber bend mechanism of the fiber optic identifier of claim 5, wherein, The traction structure includes a limiting groove (13) arranged on the convex body (11) and a traction column (23) arranged on the support block (22). The width of the limiting groove (13) extends along the sliding direction of the slide (1). The traction column (23) is parallel to the support shaft. The traction column (23) is slidably fitted in the limiting groove (13).

7. The fiber bend mechanism of the fiber identifier of claim 3, wherein, The limiting structure includes a light shielding cover (3) slidably arranged in the optical fiber identification instrument. The sliding direction of the light shielding cover (3) is the same as the sliding direction of the slide (1). One side of the light shielding cover (3) facing the slide (1) is provided with a plurality of convex ribs (31) extending along the sliding direction of the light shielding cover (3). The convex ribs (31) have second limiting surfaces (32) parallel to the first limiting surface (21). The plurality of second limiting surfaces (32) are located in the same plane.

8. The fiber bend mechanism of the fiber optic identifier of claim 1, wherein, The limit body (2) is provided with a first matching curved surface (24) matching the shape of the optical fiber at the contact position. The optical fiber placement port (12) located on the inside of the macro-bend (a) is provided with a second matching curved surface (14) matching the shape of the optical fiber.

9. The fiber bend mechanism of the fiber optic identifier of claim 1, wherein, The power structure includes a motor (6) arranged in the optical fiber identification instrument, a gear (7) arranged on the rotating shaft of the motor (6), and a rack (8) arranged on the slide (1). The rack (8) extends along the sliding direction of the slide (1). The gear (7) is engaged with the rack (8).

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