JP2005024789A - Tension member fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems that the work for tightening/loosening screws arises at the time of fixing and unfixing a tension member and necessitates equipment and materials and substantial man hours for tightening and that the tip of the tension member is exposed within the equipment and there is a possibility of the occurrence of breakage and shorting. <P>SOLUTION: A movable piece 10 is held in-between by pivotal supporting pieces 2 and is turnably movably and pivotally supported at one end. The interior of the movable piece 10 is formed to a hollow semi-cylindrical shape. A slit 13 is formed at its front end and a large open hole is formed at its rear. An upper tooth section 13 of an I-shape in section is formed on the inner wall of the movable piece 10 and a locking lever body 20 of a U shape in section is put in a saddle form on another one end of the movable piece 10 and is turnably movably and pivotally supported by a shaft 12. A knob section is formed at the open end of the locking lever body 20 and a U-shape hook 21 is pivotally supported turnably movably relative to the locking lever body 20 near the shaft 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical fiber cable connection fixture that is wired to an outdoor or indoor electronic communication device, and more particularly to a tension member fixture that holds and fixes a tension member of an optical fiber cable wire.
[0002]
[Prior art]
When connecting an optical fiber cable having a core and a tension member, it is essential to grip and fix the tension member. For this reason, conventionally, it is common to form a screw hole in the optical fiber cable connection storage case, wind the end of the tension member around the screw member to be screwed into the screw hole, and then fix it using a tool. there were.
[0003]
However, in order to process the end portion of the conventional optical fiber cable, it is necessary to peel off the cable coating or to bend the wire around a screw. Therefore, when taking out the core wire, the optical fiber cable is cut long in anticipation of this processing, and during the fixing process, the tension member is torn off from the core wire and the coating on the tip is peeled off, and the exposed end of the tension member Although the work which winds and fixes a part around a screw was performed, performing such work on each cable imposed a great burden on the worker in terms of man-hours.
[0004]
Further, the screw member is likely to loosen with time, and there is a problem that the fixed tension member may come off.
[0005]
In order to solve such a problem, there is also provided a tension member fixing tool represented by, for example, a technique described in “Optical cable fixing tool” of Japanese Patent Application Laid-Open No. 9-311229, which is easy to fix and difficult to come off. The contents of this prior art will be briefly described below with reference to FIG.
[0006]
A rotating plate 102 is pivotally supported on a fixed portion 101 fixed in a standing state on a connecting rod by a shaft support screw 103 so as to be rotatable with respect to a tension member 30 with a vertical axis. The rotating plate 102 is a substantially rectangular plate having high rigidity, and has a shaft hole 104 through which the shaft support screw 103 passes at one end in the longitudinal direction, and a concave shape from the long side on one side at the other end in the longitudinal direction. Cutout holes 105 are formed respectively. The punched hole 105 is slightly wider than the diameter of the engaging screw 106 screwed into the fixing portion 101 in the same manner as the shaft support screw 103, and when the rotating plate 102 is rotated, It is formed at a position where it can be fitted with slight looseness. When the tension member 30 is held and fixed, the rotation plate 102 is rotated and engaged with the engagement screw 106, and then the shaft support screw 103 and the engagement screw 106 are tightened to restrict the rotation of the rotation plate 102. The tension member 30 is fixed by sandwiching the tension member 30 in the gap between the rotating plate 102 and the fixing portion 101 and further tightening the shaft support screw 103 and the engagement screw 106.
[0007]
[Problems to be solved by the invention]
However, although the conventional tension member fixture described above does not employ a configuration in which the end portion is directly wound around the screw, a screw is used as a means for fixing the tension member. Loosening work occurred. For this operation, a fastening tool is required, and it is difficult to avoid a certain amount of man-hours.
[0008]
In addition, when a large number of screws must be tightened, it is desirable to align all screws with the same type in consideration of work efficiency. However, this is one factor that makes it easy to cause a situation where a screw is forgotten to be tightened. It was.
[0009]
In addition, the end of the tension member itself can be held down, but the tip of the tension member is exposed in the device, and there is no case where the tip contacts with a tool or the like, or causes a short circuit. That said, there was some concern about the protection of optical fiber cables.
[0010]
The present invention solves such problems, and provides a tension member fixture having a structure in which a fixing operation is easily realized without using a tool, and the fixing operation directly leads to a protection operation of the end of the tension member. It is an object.
[0011]
[Means for Solving the Problems]
In view of the above-described problems, the tension member fixture of the present invention is vertically fixed to a base on which a lower tooth portion on which a tension member is placed is formed, and to both sides of one end of the base. A pair of shaft support pieces formed on the base wall and pivotally supported in the front-rear direction of the base so as to be sandwiched between the pair of shaft support pieces, and an upper tooth portion at a position corresponding to the lower tooth portion of the inner wall A hollow semi-cylindrical movable body formed on the movable body, and a saddle-shaped lock lever body mounted on the free end side of the movable body and pivotally supported at one end so as to be swingable with respect to the movable body; And a ring-shaped hook that is pivotally mounted by sandwiching the lock lever body from both sides, the tension member is inserted between the base and the movable body, and the hook is bridged over the base. Push down the lock lever body More, it is characterized in that for clamping fix the tension member at the lower teeth with the upper teeth.
[0012]
Further, as a second configuration example of the present invention, in addition to the above-described configuration, a tension member end protective wall is vertically formed on the side of the base where the shaft support piece is not formed. It is characterized by.
[0013]
Further, as a third configuration example of the present invention, in addition to the first or second configuration example, a slit for guiding the tension member is formed in the movable body.
[0014]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-311229
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing a configuration of a tension member fixture according to the present invention. The fixed portion 1 is formed of an elongated plate-shaped steel material. One side of the fixing portion 1 is bent in a hook shape, and the tip portion is standing as a protective wall 4 in a vertical direction so as to slightly exceed the horizontal plane of the higher step of the stepped portion.
[0016]
Two screw holes 6 for fixing are formed along the longitudinal direction at the higher level of the horizontal portion of the fixing portion 1, and the lower tooth portion 5 having an L-shaped cross section is formed between the screw holes. Is provided. Further, shaft support pieces 2 are formed on both sides of the high step of the fixing portion 1. A concave groove 3 bent in a bowl shape is formed in the lower step of the horizontal portion.
[0017]
One end of the movable piece 10 is pivotally supported by a shaft 11 so as to be sandwiched between both shaft support pieces 2 of the fixed portion 1. The movable piece 10 is formed in a semi-cylindrical shape having a hollow inside, and a slit 13 is formed at the front end (right side in the figure), and a large open hole is formed at the rear part (left side in the figure). Further, on the inner wall of the movable piece 10, as shown in FIG. 3, when the movable piece 10 is rotated to the state where it covers the fixed portion 1, the lower tooth portion formed on the fixed portion 1 in the vertical direction. An upper tooth portion 13 having an I-shaped cross section is formed in such a positional relationship that a slight gap is left between the first portion 5 and the fixed portion 1 while being slightly shifted in the longitudinal direction.
[0018]
The other end of the movable piece 10 is covered with a lock lever body 20 having a U-shaped cross section in a bowl shape and is pivotally supported by a shaft 12. A knob portion is formed at the open end of the lock lever body 20, and a U-shaped hook 21 is pivotally supported in the vicinity of the shaft 12 so as to be rotatable with respect to the lock lever body 20.
[0019]
Next, the fixing operation of the tension member fixture according to the present invention will be described with reference to the drawings.
[0020]
The fixing part 1 is fixed to a device main body (not shown) by fastening means such as screws. From this state, as shown in FIG. 4, the movable piece 10 is rotated to the open side (counterclockwise in the figure), and the optical fiber cable 30 is formed in the fixed portion 1 from the open hole in the rear end portion. It passes over the lower teeth 5 and is further inserted through the slit 14 until the tip tension member abuts against the protective wall 4. The slit 14 has a width slightly wider than the diameter of the tension member, and the slit 14 is cut to a position slightly lower than the horizontal surface of the front end portion of the protective wall 4.
[0021]
When the movable piece 10 is rotated clockwise after the optical fiber cable 30 is inserted, the inserted optical fiber cable 30 is sandwiched between the upper teeth 13 and the lower teeth 5 of the inner wall of the movable piece 10. This prevents the optical fiber cable 30 from coming off. At this time, as shown in FIG. 5, the lock lever body 20 is rotated with a slight inclination in the clockwise direction, and the protective wall 4 is passed through the hook 21. When the lock lever body 21 is further rotated clockwise, the hook 21 is fitted into the concave groove 3 formed in the lower horizontal portion of the fixed portion 1.
[0022]
From this state, when the lock lever body 20 is rotated counterclockwise, only the lock lever body 20 is rotated while the tip of the hook 21 is fitted in the concave groove 3 of the fixing portion 1. As shown in FIG. 2, the movable lever 10 is sandwiched and fixed between the lock lever body 20 to which the movable piece 10 is connected and the fixed portion 1. At this time, the tip end portion of the tension member is protected by a protective wall, and the unnecessary fluttering operation of the tension member itself is restricted by the slit, so that it is prevented from being damaged by contact with a tool or causing a short circuit. The
[0023]
When releasing this fixed state, it has a knob portion formed on the lock lever body 20 and rotates it in the clockwise direction in FIG. 21 is rotated counterclockwise to release the connection with the fixed portion 1. As a result, the movable piece 10 can rotate counterclockwise, and the holding state of the optical fiber cable 30 by the upper tooth portion 13 and the lower tooth portion 5 is released.
[0024]
In the present embodiment, the example in which the fixed portion 1, the movable piece 10, and the lock lever body 20 are formed of steel has been described. However, this material is known as a constituent material of a conventional fixture such as plastic. In addition, it is possible to appropriately select a material that can satisfy the conditions of elasticity and workability required for the present fixture.
[0025]
In the present embodiment, an example of the protective wall vertically upright has been described. However, a configuration may be adopted in which the protective wall is further bent inward so as to have a hook shape with respect to the tip of the tension member. Furthermore, in this embodiment, the lock lever body and the fixed portion are connected by fitting the hook and the concave groove. However, the hook has a convex pin and the fixed portion has a slightly larger diameter than the pin diameter. It goes without saying that known fitting means used in this type of fastening mechanism can be appropriately selected, such as forming a hole for use.
[0026]
【The invention's effect】
As described above, according to the tension member fixture of the present invention, a structure in which a movable piece is sandwiched by connecting a fixed portion and a lock lever, and a tension member is fixed between the movable piece and the fixed portion, and a fixing operation. Has a structure that leads to the protection work of the tension member end as it is, so that the tension member fixing / releasing operation and protection operation can be performed only by operating the lock lever without requiring any tools. Play.
[0027]
In addition, depending on factors such as the gap between the upper teeth and lower teeth and the arrangement, the arrangement of the shaft holes formed in the movable piece and the lock lever, etc. There is also an effect that it can be fixed. By these things, it becomes possible to improve work efficiency significantly.
[Brief description of the drawings]
FIG. 1 is an external perspective view of an embodiment of a tension member fixture according to the present invention.
FIG. 2 is a front view of the embodiment of the present invention.
FIG. 3 is a cross-sectional view taken along the line AA ′ in FIG.
FIG. 4 is a perspective view showing a tension member unlocking state by a tension member fixing tool;
FIG. 5 is a perspective view showing a locking operation of a tension member.
FIG. 6 is a diagram showing a configuration of a conventional tension member fixture.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fixed part 2 Shaft support piece 3 Concave groove 4 Protective wall 5 Lower tooth part 6 Screw hole 10 Movable piece 11 Shaft 12 Shaft 13 Upper tooth part 14 Slit 20 Lock lever body 21 Hook 30 Optical fiber cable

Claims (3)

A base fixed to the apparatus main body and having a lower tooth portion on which a tension member is placed;
A pair of shaft support pieces formed vertically standing on both sides of one end of the base;
A hollow semi-cylindrical movable body that is pivotally supported in the longitudinal direction of the base so as to be sandwiched between the pair of shaft support pieces and has an upper tooth portion formed at a position corresponding to the lower tooth portion of the inner wall. When,
A hook-shaped lock lever body placed on the free end side of the movable body and pivotally supported at one end so as to be swingable relative to the movable body;
It is composed of a ring-shaped hook pivotally attached by sandwiching the lock lever body from both sides,
The tension member is inserted between the base and the movable body, and the tension member is sandwiched and fixed between the upper tooth portion and the lower tooth portion by spanning the hook over the base and pushing down the lock lever body. The tension member fixture characterized by doing. On the side of the base where the shaft support piece is not formed,
The tension member fixture according to claim 1, wherein the tension member end protection wall is vertically formed upright. The tension member fixture according to claim 1 or 2, wherein a slit for guiding the tension member is formed in the movable body.

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