JPH0511123A - Optical fiber holding mechanism for core line optical fiber contrasting device - Google Patents

Abstract

PURPOSE:To gently perform contact and separation between a head and a body. CONSTITUTION:This mechanism is provided with the head 1 forming a projecting curved surface 1A, the body 2 forming a recessed curved surface 2A, a button 4 held freely rotatably in the body 2, a guide 5 fixing a connecting rod 3, a chassis 6 sliding the guide 5, a cam 7A connecting the button 4 with the chassis 6, the cam 7B connecting the button 4 with the guide 5 and a twisting coil spring 8 imparting rotational force to the button 4. The cam 7A and 7B are opened by pressing the button 4 to hold the optical fiber inserted between the projecting curved surface 1A and the recessed curved surface 2A and a projection 4A is entered under the projection 2E by pressing the button 4 toward the recessed curved surface 2A side to lock the button 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention moves a head toward a main body by pushing down the button, brings the head and the main body into contact with each other via a compression coil spring, and pushes the button toward the head to rotate the button. The present invention relates to an optical fiber holding mechanism of a locked optical fiber core wire identifier.

[0002]

2. Description of the Related Art Next, the structure of a conventional optical fiber core wire identifier will be described with reference to FIG. 8, 10 is an optical fiber, 11 is a head, 12 is a main body, 13 is a connecting plate, 14
Is a photodetector, and 15 is a knob. A convex curved surface 11A is formed on the head 11, and a concave curved surface 12A that contacts the convex curved surface 11A is formed on the main body 12. Knob 15 and connecting plate 13
Have a structure interlocking with each other, and when the knob 15 is moved away from the main body 12, the optical fiber 10 moves to the convex curved surface 1
It is sandwiched between 1A and concave curved surface 12A.

Next, a state in which the optical fiber 10 is sandwiched between the head 11 and the main body 12 of FIG. 8 will be described with reference to FIG. The optical fiber 10 is bent by the convex curved surface 11A and the concave curved surface 12A, and a part of the optical signal traveling through the optical fiber 10 leaks to the outside and is received by the photodetector 14. In addition, FIG. 8 and FIG.
It is shown in FIGS. 2 and 4 of Japanese Utility Model Publication No. 61-73105. A sectional view is shown in FIGS. 1 and 3 of the publication, and a spring is built in between the knob 15 and the main body 12.

[0004]

The knob 15 shown in FIG. 8 is moved to sandwich the optical fiber 10 between the head 11 and the main body 12,
When the knob 15 is released, the built-in spring is released and the head 1
1 may move suddenly and break the optical fiber 10.
This invention locks the state in which the optical fiber 10 is sandwiched between the head 1 and the main body 2 by pushing down the button and pushing it toward the head 1, and pushes the button in the direction opposite to the head 1.
It is an object of the present invention to provide an optical fiber holding mechanism that makes the head 1 separate from the main body 2 side when the button is released so that the head 1 and the main body 2 come into contact with and separate from each other gently.

[0005]

In order to achieve this object, according to the present invention, a head 1 having a convex curved surface 1A is formed.
A connecting rod 3 connected to the head 1 and a concave curved surface 2A that contacts the convex curved surface 1A, a hole 2B for inserting the connecting rod 3 into the concave curved surface 2A, and a square hole 2D in the upper surface 2C. And a protrusion 2E is formed at the end of the square hole 2D.
A main body 2 having a hole 2G formed in a side surface 2F thereof, a fan-shaped outer shape, projections 4A and 4B formed on an arc portion, the projection 4A is formed by changing a radius of the arc, and the projection 4B has an arc shape. The protrusion 4B is formed so as to project from the end.
L-shaped hole 4C is formed on the side surface near the hole, a long hole 4D is formed on the side surface of the keying portion, and the hole is inserted into the long hole 4D.
The button 4 rotatably held in the square hole 2D by the pin 9A fixed by the guide 9 and the guide 5 to which the connecting rod 3 is fixed.
A chassis 6 attached to the bottom surface of the main body 2 for sliding the guide 5, a cam 7A connecting the chassis 9 with the pin 9B inserted into the L-shaped hole 4C of the button 4, and an L-shaped hole 4C of the button 4. A cam 7B that connects the inserted pin 9B and the guide 5 and a torsion coil spring 8 that gives a rotational force to the button 4 are provided.
The cam 7B opens, the guide 5 moves in a direction away from the concave curved surface 2A, the optical fiber 10 inserted between the convex curved surface 1A and the concave curved surface 2A is sandwiched between the convex curved surface 1A and the concave curved surface 2A, and the button 4 is concave. By pushing to the curved surface 2A side, the protrusion 4A
Enter under E and button 4 is locked. In addition, a pillar 1C attached to a counterbore 1B formed in the head 1
Then, the connecting rod 3 inserted into the hole 1D formed in the head 1 is fixed, and the guide plate 1F that moves in the counterbore hole 1E formed in the head 1 and the support plate 1C are attached to the counterbore 1E. A compression coil spring 1H wound around a cover 1G and a support 1C and giving a force to push the guide plate 1F toward the cover 1G.
When the button 4 is pressed, the connecting rod 3 moves to bring the convex curved surface 1A and the concave curved surface 2A into contact with each other, and further compresses the compression coil spring 1H to move the guide plate 1F to the concave curved surface 2A side.

[0006]

Next, the construction of the optical fiber holding mechanism according to the present invention will be described with reference to FIG. In FIG. 1, 1 is a head, 2 is a main body, 3 is a connecting rod, 4 is a button, 5 is a guide, and 6 is a shear.
Reference numerals 7A and 7B are cams, 8 is a torsion coil spring, and 9A to 9D are pins. The button 4 rotates with the pin 9A as a fulcrum, and the cam 7A rotates with the pin 9C as a fulcrum. Cam 7
B rotates about the pin 9D as a fulcrum, and the cam 7A and the cam 7B are connected by the pin 9B. The torsion coil spring 8 gives a force in the direction in which the button 4 opens.

Next, an exploded perspective view of the main body 2, button 4, guide 5, and chassis 6 of FIG. 1 will be described with reference to FIG. A concave curved surface 2A is formed on the main body 2, and the connecting rod 3 is formed on the concave curved surface 2A.
A hole 2B for inserting is inserted. A square hole 2D is formed in the upper surface 2C of the main body 2, and a protrusion 2E is formed at the end of the square hole 2D. A hole 2G is formed on the side surface 2F of the square hole 2D.

The button 4 has a fan-shaped outer shape, and projections 4A and 4B are formed on the arc portion. The protrusion 4A is formed so as to change the radius of the arc, and the protrusion 4B is formed so as to protrude from the end of the arc. An L-shaped hole 4C is formed on the side surface near the protrusion 4B, and a long hole 4D is formed on the side surface of the key portion.
Is opened. The pin 9A is from the long hole 4D to the hole 2G of the main body 2.
The button 4 is rotatably held in the square hole 2D.

The connecting rod 3 is fixed to the guide 5. A flange portion 5A is formed on the side surface of the guide 5, and a hole 5B for inserting the pin 9D is formed in the flange portion 5A.
The chassis 6 is attached to the bottom surface of the main body 2, and the guide 5
Play the role of sliding. On the side of chassis 6,
A flange portion 6A is formed, and a pin 9 is formed on the flange portion 6A.
A hole 6B into which C is inserted is made. Button 4 for cam 7A
The pin 9B inserted into the L-shaped hole 4C of 4 and the chassis 6 are connected, and the cam 7B connects the pin 9B inserted into the L-shaped hole 4C of the button 4 and the guide 5.

Next, the state in which the button 4 in FIG. 1 is pressed is shown in FIG.
Will be described. Button 4 rotates around pin 9A as a fulcrum,
The pin 9B is moved in a direction away from the concave curved surface 2A. As a result, the cam 7A rotates and the cam 7B slides the guide 5. When the guide 5 slides, the connecting rod 3 moves to move the head 1 to the main body 2 side. FIG. 3 shows a state in which the head 1 is in contact with the main body 2.

Next, the button 4 is moved to the head 1 from the state shown in FIG.
The state of pushing to the side will be described with reference to FIG. The pin 9A slides in the long hole 4D, and the pin 9B slides in the L-shaped hole 4C. As a result, the protrusion 4A comes under the protrusion 2E, and the button 4 is locked. To unlock button 4,
Push the button 4 away from the concave curved surface 2A to project the projection 4A.
When the button 4 is released from the projection 2E and the force pushing the button 4 is released, the button 4 is rotated by the force of the torsion coil spring 8, the connecting rod 3 moves in the direction away from the main body 2, and the head 1 and the main body 2 separate. The projection 4B of the button 4 comes into contact with the projection 2E, and the rotation of the button 4 is stopped.

Next, the relationship between the head 1 and the main body 2 will be described with reference to FIG. In FIG. 2, 1A is a convex curved surface, 1B is a counterbore hole, 1
C is a post, 1E is a counterbore, 1F is a guide plate, 1G is a lid, and 1H is a compression coil spring. The convex curved surface 1A and the concave curved surface 2A have the same functions as the convex curved surface 11A and the concave curved surface 12A of FIG. A connecting rod 3 is movably inserted into the head 1.
The column 1C is attached to the counterbore 1B formed in the head 1.

Next, an exploded perspective view of the head 1 of FIG. 5 is shown in FIG.
Will be described. 1D is a hole through which the connecting rod 3 moves.
The connecting rod 3 is fixed to the guide plate 1F, and the guide plate 1F moves in the counterbore 1E. The lid 1G is attached to the column 1C and covers the counterbore 1E. The compression coil spring 1H is wound around the column 1C and gives a force to push the guide plate 1F toward the lid 1G.

Next, a state in which the connecting rod 3 is moved from the state shown in FIG. 5 will be described with reference to FIG. As shown in FIG. 4, when the button 4 is pushed, the connecting rod 3 moves and the convex curved surface 1A and the concave curved surface 2A come into contact with each other. In FIG. 7, the compression coil spring 1H is further added.
Is compressed and the guide plate 1F moves to the concave curved surface 2A side, and the optical fiber 10 sandwiched between the convex curved surface 1A and the concave curved surface 2A is curved. As a result, the optical signal is transmitted from the optical fiber 10 to the photodetector.

[0015]

According to the present invention, the button is depressed,
By pushing to the head side, the state that the optical fiber is sandwiched between the head and the main body is locked, the button is pushed in the opposite direction to the head, and when the button is released, the button rotates and the head separates from the main body side. The contact and disengagement of the body can be made gentle. As a result, it is possible to reduce the accidental damage of the optical fiber.

[Brief description of drawings]

FIG. 1 is a sectional view showing the configuration of an optical fiber holding mechanism according to the present invention.

FIG. 2 is an exploded perspective view of a main body 2, a button 4, a guide 5, and a chassis 6 of FIG.

FIG. 3 is a state diagram in which a button 4 in FIG. 1 is pressed.

FIG. 4 is a state diagram in which a button 4 is pushed toward the head 1 side from the state of FIG.

FIG. 5 is a diagram illustrating the relationship between the head 1 and the main body 2.

6 is an exploded perspective view of the head 1 of FIG.

7 is a state diagram in which the connecting rod 3 is moved from the state of FIG.

FIG. 8 is a block diagram of a conventional optical fiber core wire identifier.

9 is a diagram showing an optical fiber 10 including the head 11 and the body 12 of FIG.
It is the state figure which pinched | interposed.

[Explanation of symbols]

1 head 1A convex curved surface 1B counterbore 1C prop 1D hole 1E counterbore 1F guide plate 1G lid 1H compression coil spring 2 body 2A concave curved surface 2B hole 2C upper surface 2D square hole 2E protrusion 2F side 2G hole 3 connecting rod 4 buttons 4A protrusion 4B protrusion 4C L-shaped hole 4D long hole 5 guides 6 chassis 7A cam 7B cam 8 torsion coil spring 9A pin 9B pin 10 optical fibers

Claims (2)

[Claims] 1. A head (1) on which a convex curved surface (1A) is formed, a connecting rod (3) connected to the head (1), and a concave curved surface (2A) contacting the convex curved surface (1A) are formed. The concave surface (2
The first hole (2B) for inserting the connecting rod (3) is made in (A), the square hole (2D) is made in the upper surface (2C), and the first protrusion (2D) is formed at the end of the square hole (2D). 2E) is formed, and a second hole (2F) is formed on the side surface (2F) of the square hole (2D).
G), the main body (2) is opened, and the outer shape is formed in a fan shape, and the second protrusion (4A) and the third protrusion (4B) are formed in the arc portion, and the second protrusion (4A) has an arc shape. It is formed by changing the radius, the third protrusion (4B) is formed so as to project from the end of the arc, and the L-shaped hole (4C) is formed on the side surface near the third protrusion (4B). Oblong hole (4D) on the side of the key part
A button (4) that is rotatably held in the square hole (2D) by the first pin (9A) that is opened and inserted into the long hole (4D) and fixed in the second hole (2G). , The guide (5) to which the connecting rod (3) is fixed, the chassis (6) which is attached to the bottom of the body (2) and slides the guide (5), and the L-shaped hole (4D) of the button (4). The second pin (9B) that is inserted into the L-shaped hole (4D) of the button (4) and the first cam (7A) that connects the second pin (9B) that is inserted into the chassis and the chassis (6) It is equipped with a second cam (7B) that connects the guide and the guide (5), and a torsion coil spring (8) that gives a rotational force to the button (4), and by pushing the button (4), the first cam (7A). ) And the second cam (7B) open, the guide (5) moves away from the concave curved surface (2A), and the optical fiber (10) inserted between the convex curved surface (1A) and the concave curved surface (2A) is moved. ) Between the convex curved surface (1A) and the concave curved surface (2A),
The optical fiber core characterized in that the button (4) is locked by pushing the (4) toward the concave curved surface (2A) so that the second protrusion (4A) enters under the first protrusion (2E). Optical fiber holding mechanism of line contrast device. 2. A first counterbore hole formed in the head (1).
A column (1C) attached to (1B) and a connecting rod inserted into the third hole (1D) formed in the head (1)
(3) is fixed, and the guide plate (1F) that moves in the second counterbore hole (1E) formed in the head (1) and the second counterbore hole ( 1E) lid to cover
(1G) and a compression coil spring (1H) that is wound around the column (1C) and gives a force to push the guide plate (1F) to the lid (1G) side, and press the button (4) to connect the connecting rod ( 3) moves and the convex curved surface (1A) contacts the concave curved surface (2A), and the compression coil spring (1A)
2. The optical fiber holding mechanism for an optical fiber core identifier according to claim 1, wherein the guide plate (1F) is moved toward the concave curved surface (2A) by compressing H).