CN-122009905-A - Glue-free inner outgoing line optical fiber tube

CN122009905ACN 122009905 ACN122009905 ACN 122009905ACN-122009905-A

Abstract

The invention discloses a glue-free inner outgoing line optical fiber tube, which comprises a shell, wherein a winding tube is arranged in the shell, the winding tube comprises a sleeve, an inner baffle, an outer baffle, a damping seat, an inner shaft and an elastic damping brush, two ends of the sleeve are respectively fixedly connected with the inner baffle and the outer baffle, the inner end of the damping seat is fixed in a central hole of the outer baffle, the inner shaft is positioned in the sleeve, the inner end of the inner shaft is fixedly connected with the inner baffle, the outer end of the inner shaft penetrates out of a cavity of the damping seat, a conical transition section on the inner shaft and the cavity wall of the inner end of the damping seat form an outgoing line channel, edges of an inner port of the damping seat and the outer end of the inner shaft, which are in contact with an optical fiber, are arc transition surfaces, the arc transition surfaces are in circumferential distribution, the elastic damping brush applies radial clamping force to the optical fiber, and a stable and sufficient outgoing line damping structure is arranged inside the winding tube, so that the phenomenon of 'uncontrolled outgoing line' caused by the dead weight of the optical fiber is effectively counteracted.

Inventors

FU WENBIN
HUANG JUN
WANG KUI
DONG FEI
ZHANG GUOHUA

Assignees

湖北国源空间信息技术有限公司

Dates

Publication Date: 20260512
Application Date: 20260324

Claims (6)

1. A glue-free inner outgoing line fiber tube comprises a shell, wherein a winding tube is arranged in the shell, and is characterized by comprising a sleeve, an inner baffle, an outer baffle, a damping seat, an inner shaft and an elastic damping brush, wherein two ends of the sleeve are respectively fixedly connected with the inner baffle and the outer baffle, the inner end of the damping seat is fixed in a central hole of the outer baffle, the inner shaft is positioned in the sleeve, the inner end of the inner shaft is fixedly connected with the inner baffle, the outer end of the inner shaft penetrates out of a cavity of the damping seat, a conical transition section on the inner shaft and the cavity wall of the inner end of the damping seat form an outgoing line channel, edges of an inner port of the damping seat and the outer end of the inner shaft, which are in contact with an optical fiber, are arc transition surfaces, the arc transition surfaces face the optical fiber, the elastic damping brush is circumferentially distributed on the inner wall of the outer end of the damping seat, and the elastic damping brush exerts radial clamping force on the optical fiber.
2. The glue-free inner outgoing line optical fiber tube of claim 1, wherein the shell comprises a tube body and a tube cover, the tube body is fixedly connected with the tube cover, the inner end of the tube cover is in a hollow inverted conical shape, the outer end of the tube cover is in a cylindrical pipeline, and the transition part between the inner end and the outer end of the tube cover is an arc transition surface.
3. The glue-free inner outgoing line optical fiber tube of claim 1 or 2, wherein weight reducing grooves are distributed on the outer end surfaces of the inner baffle plate and the outer baffle plate.
4. The glue-free inner outgoing line optical fiber tube of claim 3, wherein the inner end of the damping seat is a convex spigot, the central hole on the outer baffle is a concave spigot, and the inner end of the damping seat is in interference fit with the central hole on the outer baffle.
5. A glue-free inner-outlet fiber tube as defined in claim 1,2 or 4, wherein said inner shaft is hollow.
6. The glue-free inner outgoing optical fiber tube of claim 5, wherein the outgoing end of the tube cover is provided with an optical fiber outgoing nozzle, the outgoing end of the optical fiber outgoing nozzle is provided with a protective cover, and an optical fiber connector is arranged in the protective cover.

Description

Glue-free inner outgoing line optical fiber tube Technical Field The invention belongs to the field of unmanned aerial vehicle bobbins, and particularly relates to a glue-free inner outgoing line optical fiber tube. Technical Field Currently, in unmanned aerial vehicle flight control, aerial photography and optical fiber communication transmission, it is often necessary to pay out the optical fiber from the reel. The existing optical fiber outgoing line modes mainly comprise outgoing line modes and internal outgoing line modes. Outgoing line mode: the optical fiber is drawn out from the outside of the cylinder. When the optical fiber barrel hovers or flies at high altitude and low speed, the optical fiber lacks sufficient outlet damping due to the gravity action of the optical fiber, so that the outlet length of the optical fiber is longer than the length required by actual flight. The redundant optical fibers are easy to wind and knot after falling to the ground, and the signal is interrupted and even the optical fibers are broken when serious. When the unmanned aerial vehicle flies, the optical fiber is led out of the winding drum through traction, and the wire outlet mode is called inner wire outlet. In order to solve the problem that the damping does not scatter in an internal wire-outgoing mode, the prior art is that an optical fiber is wound around a central shaft in a winding reel, and damping is increased when the optical fiber is pulled out in a mode of smearing glue between optical fiber layers. However, the mode of fixing by means of glue has the obvious defects that the glue is greatly influenced by ambient temperature and humidity, and is easy to age and deteriorate along with the time, so that the damping force is unstable, and the reliability of the product under different working conditions is seriously influenced. In addition, the use of glue has increased the whole weight of barrel, is unfavorable for unmanned aerial vehicle lightweight design, and glue solidification has taken the interlaminar space, has restricted the miniaturization of the density and the barrel of arranging of optic fibre. Disclosure of Invention The invention provides a glue-free inner outgoing line optical fiber tube, which solves the problem that the existing inner outgoing line mode has unstable outgoing line damping. The technical scheme is that the glue-free inner outgoing optical fiber tube comprises a shell, and a winding tube is arranged in the shell, and is characterized by comprising a sleeve, an inner baffle, an outer baffle, a damping seat, an inner shaft and an elastic damping brush, wherein two ends of the sleeve are fixedly connected with the inner baffle and the outer baffle respectively, the inner end of the damping seat is fixed in a central hole of the outer baffle, the inner shaft is positioned in the sleeve, the inner end of the inner shaft is fixedly connected with the inner baffle, the outer end of the inner shaft penetrates out of a cavity of the damping seat, a conical transition section on the inner shaft and the cavity wall of the inner end of the damping seat form an outgoing line channel, the contact between an inner port of the damping seat and the outer end of the inner shaft is an arc transition surface, friction resistance is generated by the arc transition surface facing the optical fiber, the elastic damping brush is circumferentially distributed on the inner wall of the outer end of the damping seat, and the elastic damping brush exerts radial clamping force on the optical fiber. The technical scheme is further limited, the shell structurally comprises a barrel body and a barrel cover, wherein the barrel body is fixedly connected with the barrel cover, the inner end of the barrel cover is in a hollow inverted conical shape, the outer end of the barrel cover is in a cylindrical pipeline, and the transition part between the inner end and the outer end of the barrel cover is an arc transition surface. The technical scheme is further limited, and weight reducing grooves are distributed on the outer end surfaces of the inner baffle plate and the outer baffle plate. The technical scheme is further limited, the inner end of the damping seat is a convex spigot, the central hole on the outer baffle plate is a concave spigot, and the inner end of the damping seat is in interference fit with the central hole on the outer baffle plate. The technical scheme is further defined, and the inner shaft is of a hollow structure. The technical scheme is further improved, the outlet end of the cylinder cover is provided with an optical fiber outlet nozzle, the outlet end of the optical fiber outlet nozzle is provided with a protective cover, and an optical fiber connector is arranged in the protective cover. Compared with the prior art, the invention has the advantages of 1) solving the problem of fiber dead weight sagging, providing stable and enough wire outlet damping through a built-in mechanical dam