JP2003097133A - Hinge structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide hinge structure that can positively prevent jumping-out of an optical fiber or the like without any possibility of causing damage and deformation by metal fatigue. SOLUTION: This hinge structure is composed of a first member 2 formed by providing a plate part 2d with two cylindrical parts 2b, 2c opened at part of the side faces and disposed at a prescribed space, and a second member 3 formed by providing a plate part 3d with a hollow shaft 3b opened at part of the side face. In this structure, the hollow shaft 3b of the second member 3 is rotatably accommodated in the cylindrical parts 2b, 2c of the first member 2 so that the opening part 3a of the hollow shaft 3b does not coincide with the opening parts 2a of the cylindrical parts 2b, 2c of the first member 2. The second member 3 is provided with a projecting part 3c between the plate part 3d and the hollow shaft 3b, and the projecting part 3c is inserted between two cylindrical parts 2b, 2c from the opening parts 2a of the cylindrical parts 2b, 2c of the first member 2 to assemble the first member and second member. The projecting part 3c can function as a stopper for regulating the relative rotating operation of the first member and second member.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a hinge structure,
In particular, the present invention relates to a hinge structure used when opening and closing while inserting a linear member such as an optical fiber inside.

[0002]

2. Description of the Related Art Conventionally, in order to hold a connecting portion between optical fibers in an optical communication system or the like, Japanese Patent Application No. 2000-309227 by the present applicant discloses a hinge structure as shown in FIGS. ing.

The hinge structure 11 has a first flat plate portion.
The member 12 and the second member 13, and the third cylindrical member
And the member 14.

The first member 12 is provided with two cylindrical portions 12a and 12b whose side surfaces are partially opened in the flat plate portion 12c with a predetermined gap therebetween, and the axes of the opening portions of the cylindrical portions 12a and 12b coincide with each other.

The second member 13 is also provided with a cylindrical portion 13a whose side surface is partially opened in the flat plate portion 13d, and elastic stoppers 13b and 13c which function as biasing means.

The third member 14 is formed in the shape of a cylindrical shaft whose side surface is partially open, and is rotatably housed in the cylindrical portions 12a, 12b, 13a of the first member 12 and the second member 13.
Then, as shown by the solid line in FIG.
2, the third member 14 is housed in the cylindrical portions 12a, 12b, 13a of the second member 13, the first member 12, the second member 13 and the third member 14 are assembled, and the optical fiber is provided inside the third member 14. When the optical fiber 15 is inserted, the optical fiber 15 is surrounded by the first member 12 to the third member 14, so that the optical fiber 15 does not jump out in the side surface direction of the hinge structure 11. This prevents the optical fiber 15 from popping out when the hinge structure 11 is normally used.

Then, as shown in FIG. 6 (b), the second member 13 is rotated relative to the first member 12 about the third member 14, and the elastic force of the stopper 13b is opposed. By further rotating the second member 13 by
The openings on the side surfaces of the first member 12 to the third member 14 can be aligned, and at this time, the optical fiber 15 can be pulled out from the second member 13.

As another conventional example, Japanese Patent Application No. 2000-309227 discloses a hinge structure 21 as shown in FIGS. 7 and 8.

In this hinge structure 21, the first member 22 and the third member 24 have the same shape as the first member 12 and the third member 14 in the above-mentioned conventional example, but the second member 23 is the second member. The difference is that the stopper 13 does not have stoppers 13b and 13c.

As shown in FIG. 7, the first member 22 through the third member
After matching the openings on the side surfaces of the member 24, the optical fiber 2
5 is inserted into the third member 24, and the second member 23 is rotated relative to the first member 22 about the third member 24, whereby the optical fiber 25 is moved to the first member 22.
Therefore, the optical fiber 25 can be surrounded by the third member 24, and the optical fiber 25 can be prevented from protruding from the side surface direction of the hinge structure 21.

[0011]

However, FIG. 5 and FIG.
In the conventional hinge structure 11 shown in FIG.
The opening and closing angle is restricted by a and 13b to prevent the optical fiber 15 from jumping out in a normal use state, and when the optical fiber 15 is taken out, the elasticity of the stoppers 13a and 13b is used as shown in FIG. , Stopper 13
When a and 13b are made of metal, there is a problem in that damage and deformation due to metal fatigue may occur when used repeatedly.

Further, in the conventional hinge structure 21 shown in FIGS. 7 and 8, the first member 22, the second member 23 and the third member 24 are independent of each other. There is a problem that the third member 24 gradually rotates, the positions of the slits are aligned with each other in a normal use state, and the optical fiber 25 may pop out.

Therefore, the present invention has been made in view of the above-mentioned problems in the conventional hinge structure, and it is possible to reliably prevent the optical fiber or the like from popping out without causing damage or deformation due to metal fatigue. The object is to provide a hinge structure capable of forming.

[0014]

In order to achieve the above object, the invention according to claim 1 is a hinge structure, in which a cylindrical portion having a part of its side surface opened to a flat plate portion is provided at a predetermined interval.
And a second member having a hollow shaft whose side surface is partially open to the flat plate portion, wherein the hollow shaft of the second member is the opening of the hollow shaft and the second member. It is characterized in that it is rotatably accommodated in the cylindrical portion of the first member so that the openings of the cylindrical portion of one member do not coincide.

According to the first aspect of the invention, the hollow shaft of the second member is arranged in the cylindrical portion of the first member so that the opening of the hollow shaft does not coincide with the opening of the cylindrical portion of the first member. Since it is rotatably housed, the linear material such as the optical fiber housed inside the cylindrical portion of the first member and the hollow shaft of the second member does not jump out, so that the linear material is not damaged. It is possible to prevent jumping out while preventing it. In addition, since the elasticity of the stopper as in the past is not used,
There is no risk of damage or deformation due to metal fatigue.

According to a second aspect of the present invention, as a preferred form of the hinge structure according to the first aspect, the second member includes a protrusion between the flat plate portion and the hollow shaft, and the protrusion is By inserting the hollow shaft from the opening of the cylindrical part of the first member between the two cylindrical parts, the hollow shaft has an opening part of the hollow part and an opening part of the cylindrical part of the first member. It is characterized by being rotatably accommodated in the cylindrical portion of the first member so as not to coincide with each other. The protrusion of the second member is the first
Since it functions as a stopper that restricts the relative rotational movement of the first member and the second member by coming into contact with the flat plate portion of the member, the simple structure prevents the linear material from being damaged and pops out. Therefore, it is possible to provide a hinge structure that is free from damage and deformation due to metal fatigue.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Next, specific examples of embodiments of the hinge structure according to the present invention will be described with reference to the drawings.

1 to 3 show an embodiment of a hinge structure according to the present invention. The hinge structure 1 is composed of two parts, a first member 2 and a second member 3.

The first member 2 has cylindrical portions 2b and 2c at the end of the flat plate portion 2d, the side surfaces of which are partially opened as slits 2a.
Are provided at a predetermined interval, the axes of the openings of the cylindrical portions 2b and 2c are aligned, and the optical fiber 4 can be inserted into the cylindrical portions 2b and 2c.

The second member 3 includes a flat plate portion 3d and a protruding portion 3b.
A hollow shaft 3b having a side surface partially opened as a slit 3a is provided, and the optical fiber 4 can be inserted into the hollow shaft 3b. Further, the slit 3a and the slit 2a of the first member 2 coincide with each other when the second member 3 and the first member 2 form a predetermined angle. The outer diameter of the hollow shaft 3b is set to be slightly smaller than the inner diameters of the cylindrical portion 2b and the cylindrical portion 2c of the first member 2.

Next, the operation of the hinge structure 1 having the above structure will be described.

In FIG. 1, the slit 2a of the first member 2
The optical fiber 4 is inserted into the cylindrical portions 2a and 2b. Next, the optical fiber 4 is inserted through the slit 3a of the second member 3 into the cylindrical portion 3a. Then, while the optical fiber 4 is inserted into each of the cylindrical portions 2a, 2b, and 3a, the slit 2a of the first member 2 and the protruding portion 3c of the second member 3 are aligned in the hollow state. The shaft 3b is inserted inside the cylindrical portion 2b and the cylindrical portion 2c. As a result, the hinge structure 1 as the assembly shown in FIGS. 2 and 3 is obtained.

Then, as shown in FIG. 4, when the first member 2 is fixed to the housing 5 side through the flat plate portion 2d and the second member 3 is fixed to the lid 6 side through the flat plate portion 3d, As shown in FIGS. 1 to 3, even when the hinge structure 1 is opened and closed, the protruding portion 3c of the second member 3 contacts the flat plate portion 2d of the first member 2 and functions as a stopper. 2 and the second member 3 are restricted from rotating relative to each other, and the slit 2a and the slit 3
Since a does not match, it is possible to reliably prevent the optical fiber 4 from protruding.

In each of the above-mentioned embodiments, the case where the object accommodated in the hinge is an optical fiber has been described, but the present invention is not limited to the optical fiber and may be applied to other linear materials. Of course, you can

[0025]

As described above, according to the present invention,
It is possible to provide a hinge structure capable of reliably preventing the optical fiber or the like from popping out without the risk of damage or deformation due to metal fatigue.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a hinge structure according to the present invention.

FIG. 2 is a front view showing a state in which the hinge structure of FIG. 1 is assembled.

FIG. 3 is a perspective view showing a state where the hinge structure of FIG. 1 is assembled.

4 is a perspective view showing a usage example of the hinge structure of FIG. 1. FIG.

FIG. 5 is a perspective view showing an example of a conventional hinge structure.

6 is a front view for explaining the operation of the hinge structure of FIG.

FIG. 7 is a front view for explaining the operation of another example of the conventional hinge structure.

FIG. 8 is a front view for explaining the operation of another example of the conventional hinge structure.

[Explanation of symbols]

1 Hinge structure 2 First member 2a slit 2b cylindrical part 2c cylindrical part 2d flat plate part 3 Second member 3a slit 3b hollow shaft 3c protrusion 3d flat plate 4 optical fiber 5 housing 6 lid

Claims (2)

[Claims] 1. A first member having two flat plate portions, each of which has a cylindrical portion partially opened on its side surface, at a predetermined interval, and a second member provided with a hollow shaft having a portion of its side surface opened on the flat plate portion. A hollow shaft of the second member, and the hollow shaft of the second member is connected to the cylindrical portion of the first member so that the opening of the hollow shaft does not coincide with the opening of the cylindrical portion of the first member. A hinge structure characterized by being movably accommodated. 2. The second member includes a protrusion between the flat plate portion and the hollow shaft, and the protrusion is between the opening of the cylindrical portion of the first member and the two cylindrical portions. And the hollow shaft is rotatably housed in the cylindrical portion of the first member so that the opening of the hollow shaft does not coincide with the opening of the cylindrical portion of the first member. The hinge structure according to claim 1, wherein the hinge structure is provided.