JP3834198B2 - Hinge structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hinge structure, and more particularly to a hinge structure used when an opening / closing operation is performed while a linear member such as an optical fiber is inserted therein.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an optical fiber connection plate as shown in FIG. 5 has been proposed in, for example, Japanese Patent No. 2722463 in order to hold a connection portion between optical fibers in an optical communication system and perform extra length processing. Yes.
[0003]
This optical fiber connection plate includes a base plate 21, a back plate 22, and a hinge 23. As shown in FIG. 6, the hinge 23 has a through hole 23a through which the optical fiber is inserted along the axial direction thereof. A cylindrical portion 23b, a hollow cylindrical portion 23c, and a slit 23d are formed.
[0004]
Then, the optical fiber to be connected is introduced into the base plate 21 while being held in the through hole 23a formed by the hollow cylindrical portion 23c through the slit 23d of the hinge 23, whereby the movement of the optical fiber accompanying the rotation of the base plate 21 is achieved. And the generation of tensile force is effectively avoided.
[0005]
[Problems to be solved by the invention]
However, in the above conventional hinge structure, the hollow cylindrical portion 23c is used to form the slit 23d. However, the optical fiber may be caught by the slit 23d by opening and closing the base plate 21 and may be damaged. .
[0006]
In addition, after aligning the slits 23d of the parts 23b and 23c constituting the hinge 23, it is not easy to pass the optical fiber through the slits 23d while preventing the position from shifting, and the workability is poor. There was a problem.
[0007]
Therefore, the present invention has been made in view of the problems in the above-described conventional hinge structure, and there is no possibility of damaging the optical fiber inserted through the inside even when the hinge is opened and closed, and a hinge structure with good workability is provided. The purpose is to provide.
[0008]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the invention according to claim 1 is a hinge structure, comprising a first member having two flat plate portions with a cylindrical portion having a side surface opened at a predetermined interval, and a flat plate. A second member having one cylindrical part with a part of the side surface opened in the part and a cylindrical shaft shape with a part of the side surface opened, and accommodated in the cylindrical part of the first member and the second member is, and a third member to which the opening portion is fixed so as not to rotate together with the first member in a state consistent with the opening of the first member, said second member, said second member Urging means for restricting relative rotation between the first member and the second member, the second member rotating relative to the first member around the third member, and the second member when the second member in the direction opposite to the biasing means member is relatively rotated with respect to said first member, Serial first member, the opening of the second member and the third member, characterized in that match.
[0009]
According to the first aspect of the present invention , the second member is fixed to the first member in such a manner that the opening of the first member and the opening of the third member coincide with each other so that they cannot rotate with each other. The first member, the third member, and the second member are made to coincide with each other by rotating relatively around the third member, and an optical fiber or the like is easily inserted into the third member in this state. Therefore, if the second member is not rotated relative to the first member in a direction opposite to the biasing means of the second member, the first member and the third member can be provided . Since the openings of the member and the second member do not coincide with each other, the openings of the first member, the third member, and the second member do not coincide with each other in a normal use state, and the optical fiber or the like is more protruded. This can be reliably prevented and damage to optical fibers etc. can be confirmed. It is possible to prevent the.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, a specific example of an embodiment of the hinge structure according to the present invention will be described with reference to the drawings.
[0015]
FIG. 1 shows a first embodiment of a hinge structure according to the present invention. This hinge structure 1 includes a first member 2 and a second member 3 having flat plate portions, and a third member 4 formed in a cylindrical shape. Consists of.
[0016]
The first member 2 includes two cylindrical portions 2a and 2b whose side surfaces are opened on the flat plate portion 2c with a predetermined interval therebetween, and the axes of the opening portions of the cylindrical portions 2a and 2b coincide with each other.
[0017]
The second member 3 includes a cylindrical portion 3a having a part of a side surface opened in the flat plate portion 3d, and stoppers 3b and 3c having elasticity that function as urging means.
[0018]
The third member 4 is formed in a cylindrical shaft shape with a part of the side surface opened, and in a state where the opening of the first member 2 and the opening of the third member 4 coincide, The first member 2 and the second member 3 are accommodated in the cylindrical portion 3a of the second member 3 so as to be rotatable relative to each other . 2A, the third member 4 is accommodated in the cylindrical portions 2a, 2b, and 3a of the first member 2 and the second member 3, and the first member 2 and the second member 3 are accommodated. And when the third member 4 is assembled and the optical fiber 5 is inserted into the third member 4, the optical fiber 5 is surrounded by the first member 2 to the third member 4. Never jump out. This prevents the optical fiber 5 from jumping out in the normal use state of the hinge structure 1.
[0019]
Then, as shown in FIG. 2B, the second member 3 is rotated relative to the first member 2 around the third member 4, and the second member 3 is opposed to the elastic force of the stopper 3b. By further rotating the member 3, the openings on the side surfaces of the first member 2 to the third member 4 can be matched, and at this time, the optical fiber 5 can be extracted from the second member 3. Further, when the optical fiber 5 is inserted through the second member 3, the same procedure as described above is performed.
[0020]
In the above embodiment, the first member 2 is provided with the two cylindrical portions 2a and 2b. However, three or more of these cylindrical portions may be provided, and the second member 3 is provided with one cylindrical portion 3a. However, it is possible to provide two or more cylindrical portions 3a.
[0021]
Next, a second embodiment of the hinge structure according to the present invention will be described with reference to FIGS.
[0022]
In the present embodiment, the first member 12 and the third member 14 have the same shape as the first member 2 and the third member 4 in the first embodiment, but the second member 13 is a stopper in the second member 3. The difference is that 3b and 3c are not provided.
[0023]
As shown in FIG. 3, after the openings on the side surfaces of the first member 12 to the third member 14 are matched, the optical fiber 15 is inserted into the third member 14, and the second member 13 is inserted into the first member 12. The optical fiber 15 can be surrounded by the first member 12 to the third member 14 by rotating relative to the third member 14 as a center, and from the side surface direction of the hinge structure 11 of the optical fiber 15. Can be prevented from popping out.
[0024]
In the above-described embodiments, the case where the object accommodated in the hinge is an optical fiber has been described. However, the present invention is not limited to the optical fiber, but can be applied to other linear materials. Of course.
[0025]
【The invention's effect】
As described above, according to the present invention, there is no possibility of damaging an optical fiber or the like inserted through the inside even when the hinge is opened and closed, and a hinge structure with good workability can be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a first embodiment of a hinge structure according to the present invention.
2 is a front view for explaining the operation of the hinge structure of FIG. 1; FIG.
FIG. 3 is a front view for explaining the operation of the second embodiment of the hinge structure according to the present invention;
FIG. 4 is a front view for explaining the operation of the second embodiment of the hinge structure according to the present invention.
FIG. 5 is a perspective view showing an example of a conventional optical fiber connection plate.
6 is a cross-sectional view showing a hinge of the optical fiber connection plate of FIG. 5. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hinge structure 2 1st member 2a, 2b Cylindrical part 2c Flat plate part 3 2nd member 3a Cylindrical part 3b, 3c Stopper 3d Flat plate part 4 3rd member 5 Optical fiber 11 Hinge structure 12 1st member 13 2nd member 14 3rd Member 15 Optical fiber

Claims (1)

A first member provided with two cylindrical portions having a part of the side surface opened in the flat plate part at a predetermined interval; a second member provided with one cylindrical part having a part of the side surface opened in the flat plate part; part of the side surface is formed into a cylindrical shaft shape having an opening, said accommodated in the cylindrical portion of the first member and the second member, the first in a state where the opening coincides with the opening of the first member It is comprised with the 3rd member fixed so that it cannot rotate mutually with a member,
The second member includes biasing means for restricting relative rotation between the second member and the first member, and the second member is centered on the third member with respect to the first member. When the second member is rotated relative to the first member in a direction opposite to the biasing means of the second member, the first member and the second member are rotated. A hinge structure characterized in that openings of the member and the third member coincide.

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