JP7032767B2 - Optical reel - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Law Nippon Telegraph and Telephone East Corporation and Tool Depot Co., Ltd. will publish on January 15th and 16th, 2020 at the 13th Field Strengthening Forum, NTT Central Training Center premises. The optical reels invented by Natsumi, Mari Yoshii, Misako Akanuma, Hiroki Ogura, and Akihiro Ishiseki have been released.

The present invention relates to an optical reel.

With the spread of optical communication methods, repairs of optical communication equipment are increasing. If the optical cable is broken, the optical cable may be replaced. When replacing the optical cable, remove the broken optical cable and connect a new optical cable.

Non-Patent Document 1 discloses an optical cable reel in which a 700 m bundled optical drop cable is attached and the bundled optical drop cable can be rotated to feed the optical cable. The optical cable reel of Non-Patent Document 1 is very convenient because a 700 m bundled optical drop cable, which is a form of a sales unit of an optical cable, can be attached as it is.

"Optical cable reel products", [online], Tool Depot Co., Ltd., [Search on June 15, 2020], Internet <URL: http://www.tooldepot.co.jp/item01>

However, the optical cable reel of Non-Patent Document 1 has a problem that it is heavy with a large amount of optical cables wound around it. It is convenient because the bundled optical drop cable can be attached as it is, but heavy optical cable reels had to be transported to sites where a large amount of optical cables were not used.

Further, the optical cable reel of Non-Patent Document 1 is large and has a handle only on the upper part of the optical cable reel. Since many items are taken out to the repair site, it is necessary to hold the optical cable reel with one hand and the other items with the other hand. It was unstable when carrying a heavy optical cable reel with one hand or loading it on a vehicle.

The present invention has been made in view of the above, and an object of the present invention is to provide a lightweight optical reel.

The optical reel of one aspect of the present invention is arranged below the frame body, a reel rotatably supported by the frame body for winding an optical cable, and the reel, and a fulcrum is fixed to the frame body. A brake frame rotatably arranged around the fulcrum, and a restraining member arranged at one end of the brake frame and suppressing the outer peripheral portion of the reel by the weight of the brake frame to suppress the rotation of the reel. , The take-out port arranged at the other end of the brake frame, through which the optical cable is passed, and lifted by the optical cable when the optical cable is taken out to separate the restraining member from the outer peripheral portion of the reel, and the take-out port are lifted. It is characterized by including a limiter that limits the movable range of the brake frame so that the brake frame does not interfere with the reel at the time .

In the optical reel, the rotating shaft of the reel is characterized by including a mounting port for mounting an electric drill or a rotary handle.

The optical reel is characterized in that the mounting angle of the take-out port is variable.

According to the present invention, a lightweight optical reel can be provided.

It is a side view of the optical reel of this embodiment. It is a top view of the optical reel of this embodiment. It is a figure which shows the state of winding an optical cable around an optical reel. It is a side view of the optical reel of the modification of this embodiment. It is a front view of the optical reel of the modification of this embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a side view of the optical reel 1 of the present embodiment, and FIG. 2 is a top view of the optical reel 1 of the present embodiment. FIG. 1A shows a state in which the rotation of the reel 20 of the optical reel 1 is not suppressed, and FIG. 1B shows a state in which the rotation of the reel 20 of the optical reel 1 is suppressed by the brake mechanism 30. ..

The optical reel 1 of the present embodiment includes a main body frame 11, a reel 20 for winding an optical cable 100, a brake mechanism 30 for suppressing rotation of the reel 20, and a strap 40.

The reel 20 is composed of two outer peripheral portions 21 and a hollow cylindrical winding portion 22.

The take-up portion 22 is rotatably held by the main body frame 11 about a shaft 23 connecting the centers of the circles on both end faces. The optical cable 100 is wound around the outer peripheral surface of the winding portion 22. The curvature of the outer peripheral surface of the winding portion 22 is set to such a size that the optical cable 100 does not break. By providing an opening on the side surface of the take-up portion 22 or providing a slatted space on the outer peripheral surface of the take-up portion 22, the number of members of the take-up portion 22 may be reduced to reduce the weight.

Each of the outer peripheral portions 21 is a circular member fixed to each of the end faces of the winding portion 22 by a member extending radially. The outer peripheral portion 21 rotates together with the winding portion 22 around the shaft 23 of the winding portion 22. When the winding portion 22 rotates, the outer peripheral portion 21 also rotates, and when the rotation of the outer peripheral portion 21 stops, the rotation of the winding portion 22 also stops. The reel 20 can wind the optical cable 100 close to the outer peripheral portion 21.

The shaft 23 of the reel 20 is provided with, for example, a hexagonal hole, and has a structure to which a handle for rotating the reel 20 and an electric drill can be attached. The winding of the optical cable 100 by the electric drill will be described later.

The main body frame 11 is one size larger than the outer peripheral portion 21, and is composed of a pair of members that rotatably hold the reel 20 on both side surfaces of the reel 20. In the present embodiment, a pair of members of the main body frame 11 are formed by processing a metal pipe so that the upper portion is semi-circular and the lower portion is a quadrangle having a straight portion on the bottom surface. A support member 12 for rotatably holding the shaft of the reel 20 was attached at a position corresponding to the diameter of the upper semicircle. Each member on both side surfaces of the main body frame 11 is connected by a connecting member 13 at two points on the bottom surface. A brake mechanism 30, which will be described later, is arranged on the connecting member 13.

An attachment port 14 for the strap 40 is provided on the upper portion of the main body frame 11. The optical reel 1 of the present embodiment can be carried by hanging the optical reel 1 on the shoulder by allowing the strap 40 to be attached.

The brake mechanism 30 is arranged below the reel 20, the fulcrum 37 is fixed to the connecting member 13, and is rotatably arranged around the fulcrum 37. The rubber 34 is arranged at one end of the brake mechanism 30, and the take-out port 35 of the optical cable 100 is arranged at the other end. Since the fulcrum 37 exists between both ends, if one end rises, the other end goes down, and if one end goes down, the other end goes up. That is, if the take-out port 35 goes down, the rubber 34 goes up, and if the take-out port 35 goes up, the rubber 34 goes down. Since the fulcrum 37 is located near the rubber 34 of the brake mechanism 30, when no force is applied to the brake mechanism 30, the take-out port 35 is lowered by the weight of the brake mechanism 30 as shown in FIG. 1 (b). The rubber 34 goes up. As a result, the rubber 34 and the outer peripheral portion 21 of the reel 20 come into contact with each other, and the rotation of the reel 20 is suppressed by the frictional force of the rubber 34. Not limited to the rubber 34, any member may be used as long as it is a member that suppresses the rotation of the reel 20 by coming into contact with the outer peripheral portion 21.

The take-out port 35 includes a roller 35A and a shaft 35B. The optical cable 100 is passed between the roller 35A and the shaft 35B. When the optical cable 100 wound on the reel 20 is unwound, the optical cable 100 is pulled slightly upward so as to lift the take-out port 35 upward. As a result, as shown in FIG. 1A, the rubber 34 is separated from the outer peripheral portion 21, and the reel 20 rotates as the optical cable 100 is unwound. That is, the brake is released by raising the take-out port 35.

As shown in FIG. 2, the brake mechanism 30 includes a U-shaped frame 31 to which the rubber 34 is attached, a shaft 32, and a frame 33 to which the take-out port 35 is attached. The shaft 32 is rotatably attached between the main body frames 11 at the fulcrum 37. The frame 31 is attached to both ends of the shaft 32 with a width between the outer peripheral portions 21. The frame 33 is attached to the inner portion of the shaft 32. The frames 31 and 33 move together as the shaft 32 rotates. As shown in FIGS. 1 and 2, the frame 33 of the brake mechanism 30 has a shape in which two metal plates are bent along the shape of the outer peripheral portion 21 of the reel 20, and the brake mechanism 30 is arranged below the reel 20. Even so, the frame 33 of the brake mechanism 30 does not interfere with the rotation of the reel 20.

Further, a U-shaped stopper 36 may be attached to the connecting member 13 to limit the ascending range of the frame 33. This makes it possible to prevent the frame 33 from interfering with the optical cable 100 wound around the reel 20 by lifting the take-out port 35 too much. The stopper 36 that limits the ascending range of the frame 33 is not limited to the above. For example, the frame 33 and the connecting member 13 may be connected by a chain, a wire, a spring, or the like, or the rotation range of the shaft 32 may be limited.

In order to secure the braking performance of the brake mechanism 30, it is necessary to increase the force with which the rubber 34 presses the outer peripheral portion 21. In the present embodiment, the braking performance is ensured by increasing the weight of the frame 33 and the take-out port 35. By passing the frame 33 of the brake mechanism 30 directly under the reel 20 between the main body frames 11, the stability when the optical reel 1 is placed on the ground can be increased.

The optical reel 1 weighs about 3 kg. The width of the optical reel 1 is about 150 mm, and the optical cable 100 can be wound up to 300 m. The weight when the optical cable 100 is wound up to the maximum is about half that of the conventional product.

Next, with reference to FIG. 3, a method of winding the optical cable 100 on the optical reel 1 of the present embodiment will be described.

When heading to the site for troubleshooting, the optical cable 100 of the required length is wound from the bundled optical drop cable to the optical reel 1 and the optical reel 1 is brought to the site.

As shown in FIG. 3, the tip of the optical cable 100 is inserted from the take-out port 35, the optical cable 100 is wound around the reel 20, the electric drill 200 is attached to the shaft 23 of the reel 20, and the electric drill 200 is rotated. In FIG. 3, when the reel 20 is rotated counterclockwise, the optical cable 100 is wound around the reel 20. The rotary handle may be attached to the shaft 23 and the rotary handle may be manually rotated.

When the optical cable 100 is wound on the optical reel 1, if the bundled optical drop cable is attached to the conventional optical cable reel, the optical cable 100 is released from the conventional optical cable reel according to the winding of the optical cable 100 of the optical reel 1 of the present embodiment. It is convenient to be fed out.

Next, a modification of the optical reel 1 of the present embodiment will be described with reference to FIGS. 4 and 5. It is different from the optical reel 1 shown in FIGS. 1 and 2 mainly in that the angle of the take-out port 35 can be adjusted and the position and shape of the stopper 36 are different. Hereinafter, the differences from the optical reel 1 of FIGS. 1 and 2 will be described.

As the frame 33, one curved metal pipe was used, and one end of the frame 33 was connected to the vicinity of the center of the shaft 32. Similar to the optical reels 1 of FIGS. 1 and 2, the frames 31 and 33 move integrally with the rotation of the shaft 32. An outlet 35 was attached to the other end of the frame 33.

The take-out port 35 can fix the attachment angle of the take-out port 35 at an arbitrary angle by the stopper handle 35C. When the stopper handle 35C is loosened, the attachment angle of the take-out port 35 becomes movable, and the take-out port 35 can automatically correspond to the pay-out angle or the pull-in angle of the optical cable 100. As a result, the optical cable 100 can be extended and retracted at a more free angle. In the optical reel 1 of FIGS. 4 and 5, the take-out port 35 can freely rotate about the left-right direction of FIG. The take-out port 35 may further be rotatable about the frame 33 as an axis.

The stopper 36 is a member attached at a position where the frame 31 on the reel side (hereinafter referred to as the inside of the main body frame 11) of each member on both side surfaces of the main body frame 11 interferes with the stopper 36, and limits the movable range of the frame 31. The stopper 36 may be, for example, a protrusion provided inside the main body frame 11 or a shaft connecting the inside of the main body frame 11. Alternatively, the stopper 36 may be a protrusion (for example, a pin) that can be attached to and detached from the inside of the main body frame 11. The attachment / detachment position of the stopper 36 may be variable.

The take-up portion 22 is arranged around the shaft 23, and is composed of six plates (two plates are hidden in the support member 12 in FIG. 4) connecting the members on both side surfaces of the reel 20. The number of plates constituting the winding unit 22 is not limited to six.

In FIGS. 4 and 5, the hand-cranked handle 300 is attached to the shaft 23 of the reel 20. The hand-cranked handle 300 is removable. By turning the hand-cranked handle 300, the optical cable 100 can be wound around the optical reel 1.

As described above, the optical reel 1 of the present embodiment is formed on the main body frame 11, the reel 20 rotatably supported by the main body frame 11 for winding the optical cable 100, and the main body frame 11 below the reel 20. The brake mechanism 30 is fixed to the fulcrum 37 and is rotatably arranged around the fulcrum 37, and the reel 20 is arranged at one end of the brake mechanism 30 and suppresses the outer peripheral portion 21 of the reel 20 by the weight of the brake mechanism 30. A rubber 34 that suppresses the rotation of the reel 20 and an optical cable 100 that is arranged at the other end of the brake mechanism 30 and is lifted by the optical cable 100 when the optical cable 100 is taken out to separate the rubber 34 from the outer peripheral portion 21 of the reel 20. The mouth 35 is provided. This makes it possible to provide a lightweight optical reel.

1 ... Optical reel 11 ... Main body frame 12 ... Support member 13 ... Connecting member 14 ... Mounting port 20 ... Reel 21 ... Outer peripheral part 22 ... Winding part 23 ... Shaft 30 ... Brake mechanism 31, 33 ... Frame 32 ... Shaft 34 ... Rubber 35 ... Extraction port 35A ... Roller 35B ... Shaft 35C ... Stopper handle 36 ... Stopper 37 ... Supporting point 40 ... Strap 100 ... Optical cable

Claims (3)

With the frame
A reel for winding an optical cable, which is rotatably supported by the frame body,
A brake frame that is arranged below the reel, has a fulcrum fixed to the frame, and is rotatably arranged around the fulcrum.
A restraining member arranged at one end of the brake frame and restraining the outer peripheral portion of the reel by the weight of the brake frame to restrain the rotation of the reel.
An outlet which is arranged at the other end of the brake frame, passes through the optical cable, and is lifted by the optical cable when the optical cable is taken out to separate the restraining member from the outer peripheral portion of the reel.
An optical reel including a limiter that limits the movable range of the brake frame so that the brake frame does not interfere with the reel when the take-out port is lifted . The optical reel according to claim 1, wherein the rotary shaft of the reel is provided with a mounting port for mounting an electric drill or a rotary handle. The optical reel according to claim 1 or 2, wherein the attachment angle of the take-out port is variable.

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