JPH0637365Y2 - Link mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a link mechanism capable of performing two or more output operations by one input operation.

"Prior Art" A link mechanism may be used to perform two or more output operations by one input operation manually or by an appropriate driving means.

According to the link mechanism, the movement of the input operation unit can be transmitted to any number of output operation units, and the direction and amount of the operation in each output operation unit can be set arbitrarily.

[Problems to be solved by the invention] However, in the conventional link mechanism, the speed or force of operation in each output operation unit depends on the speed or force of operation in the input operation unit, and the speed or force of operation in the input operation unit However, there is an inconvenience that the speed or force of the operation in each output operation unit also changes and that the speed or force of the operation in each output operation unit cannot be arbitrarily set.

Therefore, this invention is a link mechanism that can perform two or more output operations by one input operation.
The speed or force of operation in each output operation unit can be set to an arbitrary constant value independent of the speed or force of operation in the input operation unit, so that the desired output operation can be stably and reliably obtained. It was done.

"Means for Solving the Problem" The link mechanism of the present invention includes a fixing pin, an L-shaped link, an operating lever, a rotation restricting means, a slider, a slider-side link,
A movable pin and a rudder biasing means are provided.

The L-shaped link is rotatably attached to the fixed pin at an intermediate portion thereof.

The operating lever is manually operated or operated by a suitable driving means, and pushes one end side of the L-shaped link to rotate the L-shaped link in a predetermined direction from the first rotation position.

The rotation restricting means prevents the L-shaped link from rotating from the first rotation position in the direction opposite to the predetermined direction.

The slider is slidable in a direction that approaches the fixing pin and moves away from the fixing pin.

The slider-side link is rotatably attached to the slider at one end thereof.

The movable pin rotatably connects the other end of the L-shaped link and the other end of the slider-side link.

The slider biasing means biases the slider toward the fixed pin, and when the L-shaped link is rotated by the operation lever in the predetermined direction to the second rotation position, brings the slider close to the fixed pin to the predetermined position. As a result, the L-shaped link is further rotated in the predetermined direction to the third rotation position.

"Operation" In the link mechanism of the present invention configured as described above, the slider, the one end of the L-shaped link, the movable pin at the other end of the L-shaped link, or the like is used as the output operation unit, or the L-shaped link. Also, a link other than the slider side link is rotatably attached to the movable pin at the other end of the L-shaped link as an output operation unit, so that two or more output operations are performed by operating the operation lever that constitutes the input operation unit. Can be made.

In this case, after the L-shaped link is rotated by the operating lever in the predetermined direction to the second rotation position, the slider biasing means brings the slider close to the predetermined position, which is the center of rotation of the L-shaped link. Since the L-shaped link further rotates in the predetermined direction to the third rotation position and each output operation unit automatically operates, the speed or force of operation in each output operation unit is independent of the speed or force of operation on the operation lever. Therefore, the speed or force of the operation in each output operation unit can be arbitrarily set by selecting the strength of the spring or the like that constitutes the slider biasing means and adding a damper as necessary.

In addition, by pushing one end side of the L-shaped link to rotate the L-shaped link to the first rotational position in the opposite direction to the first rotational position from the state after the operation in which the L-shaped link is in the third rotational position, The entire link mechanism returns to the state before the operation.

[Embodiment] FIG. 1 shows an example of the link mechanism of the present invention, where A is a state before operation in which the L-shaped link is in the first rotation position, and B is operation in which the L-shaped link is in the third rotation position. It is in a later state.

The support 21 is attached to the pedestal 11, and the fixing pin is fixed to the support 21.
22 is attached, and the L-shaped link 31 is rotatably attached to the fixed pin 22 in the middle portion thereof. Further, an operation lever 32 is rotatably attached to the fixed pin 22 at a portion on one end side thereof. An operating plate portion 32a is formed at one end of the operating lever 32, and an operating plate portion 32b is formed at the other end,
When the L-shaped link 31 is in the first rotational position shown in FIG. 1A, the operating plate 32b is pushed downward by hand, so that the operating plate 32a pushes one end 31a side of the L-shaped link 31 upward. The L-shaped link 31 is rotated in the direction indicated by the arrow X from the first rotation position. The pedestal 11 also serves as rotation restricting means for preventing the L-shaped link 31 from rotating in the direction opposite to the direction indicated by the arrow X from the first rotation position.

Above the fixing pin 22, a slider 41 and a spring 51 forming a slider biasing means are arranged. Specifically, the slider 41
Is attached to one end of the guide shaft 42, the guide body 61 is attached to the pedestal 11, and the guide hole 62 is formed in the upper portion of the guide body 61.
The guide shaft 42 is loaded with the spring 51, and the guide shaft 42 is inserted into the guide hole 62.
And a stopper 43 is attached to the other end of the guide shaft 42 to make the slider 41 slidable in the vertical direction and biased downward by a spring 51. A pin 44 is attached to the slider 41, and a slider side link 33 is attached to the pin 44.
Is rotatably attached at one end thereof, and the other end of the L-shaped link 31 and the other end of the slider side link 33 are rotatably connected to each other by a movable pin 34.

Further, in this example, the support 71 is attached to the pedestal 11, the fixing pin 72 is attached to the support 71, and the fixing pin 72 is attached.
A link 35 is rotatably attached to the movable pin 34 at one end 35a side thereof, and a link 36 is rotatably attached to the movable pin 34 at one end thereof.
The other ends of the two are rotatably connected to each other by a movable pin 37. In this example, the slider 41 and the link 35 are each an output operation unit.

In the state before the L-shaped link 31 is in the first rotation position and before the operation, as shown in FIG. 1A, the movable pin 34 at the other end of the L-shaped link 31 is connected to the pins 44 and L attached to the slider 41. The slider 41 is located on the right side of the drawing with respect to the line connecting the fixing pin 22 which is the center of rotation of the L-shaped link 31, and the one end 31a of the L-shaped link 31 abuts against the pedestal 11, so that the slider 41 resists the force of the spring 51. It stays in the position shown.

In this state, when the operation plate portion 32b of the operation lever 32 is pushed downward with an appropriate strength, the operation plate portion 32a of the operation lever 32 pushes the one end 31a side of the L-shaped link 31 upward, and the L-shaped link 31.
Is a movable pin 34 in the direction indicated by arrow X and a pin 44 and a fixed pin 22.
Rotate to a second rotational position slightly above the line connecting the lines to the left of the figure. During this time, the slider 41 hardly moves, and the one end 35a of the link 35 slightly rotates in the direction indicated by the arrow Y.

When the L-shaped link 31 rotates to the second rotation position, the spring 51
1B, the slider 41 slides downward to a position where the stopper 43 abuts on the guide body 61, and the L-shaped link 31 further rotates in the direction indicated by the arrow X to the third rotation position. Then, one end 35a of the link 35 further has an arrow Y.
Rotate to the specified position in the direction indicated by. At this time, the desired output operation is performed by sliding the slider 41 downward and rotating the one end 35a of the link 35 in the direction indicated by the arrow Y. In this case, the speed or force of sliding of the slider 41 and the speed or force of rotation of the one end 35a of the link 35 are constant values determined by the strength of the spring 51 regardless of the speed or force of the initial operation of the operation lever 32. , The strength of the spring 51, and by adding a damper as necessary, the sliding speed or force of the slider 41 and the link
The rotation speed or force of the one end 35a of the 35 can be arbitrarily set.

From the state where the L-shaped link 31 after operation is in the third rotation position, the one end 31a of the L-shaped link 31 is pushed downward by hand to move the L-shaped link 31 in the direction opposite to the direction indicated by the arrow X so that the one end 31a has the base 11
When it is rotated to the first rotation position where it hits, the entire link mechanism returns to the state of FIG. 1A before the operation.

FIG. 2 shows an optical fiber cutting device using an example of the link mechanism of the present invention, A and B are states before the link mechanism is activated, C is a state after the link mechanism is activated, and D is a part thereof. It is a component.

The link mechanism of this example is basically the same as that shown in FIG. 1, except that the slider 41 is vertically long and its central portion and the lower end of the guide shaft 42 are connected by a connecting plate 45. The hydraulic damper 52 is attached to the guide body 61 below the connecting plate 45.
Is attached, and the upper surface 52a facing the shaft 53 also serves as the stopper 43 in the example of FIG. A support 48 is attached to the upper part of the slider 41, and a cutter 49 is attached to the support 48.

The clamp 23 is attached to the upper surface of the support base 21,
When viewed from the front of the portion to which the upper surface clamp 23 is attached, the portion on the right side is curved to have a predetermined curvature in order to generate an appropriate bending stress at the planned cutting point 1a of the optical fiber 1.
Further, holes 24, 25 and 26 facing the right side surface when viewed from the front are formed in the upper part of the support base 21, a spring 27 is loaded in the hole 24, and guide shafts 28 and 29 are press-fitted in the holes 25 and 26, The above slider is provided on the right side when viewed from the front of the upper part of the support base 21.
A slider 81 different from 41 is mounted slidably along the guide shafts 28 and 29 by inserting bearings 88 and 89 provided therein into the guide shafts 28 and 29,
A clamp 83 is attached to the upper surface of the slider 81. Further, a stopper 91 that suppresses the side surface on the right side when viewed from the front of the slide 81 is attached to one end 35a of the link 35.

In the state before the link mechanism operates, it is shown in FIG.
, The connecting plate 45 is slightly separated from the shaft 53 of the hydraulic damper 52, the cutter 49 is sufficiently separated from the upper surface of the support base 21,
The slider 81 is in close contact with the support base 21. In this state, the optical fiber 1 is arranged so as to straddle the upper surface of the support base 21 and the upper surface of the slider 81 so that the planned cutting point 1a is located directly below the cutter 49, and the optical fiber 1 is clamped by the clamps 23 and 83. To do. In this way, the optical fiber 1 is clamped
In the state of being clamped by 23 and 83, an appropriate bending stress is generated in the optical fiber 1 at the planned cutting point 1a.

In this state, as described above, the operation plate 32 of the operation lever 32
Press b downward to activate the link mechanism. At this time,
When the L-shaped link 31 rotates in the direction indicated by the arrow X to the above-mentioned second rotational position, the slider 41 slides downward due to the force of the spring 51, but the speed or force of the slider 41 is reduced by the hydraulic damper 52.
Is reduced by. Then, the one end 35a of the link 35, to which the stopper 91 is attached, rotates to a predetermined position in the direction indicated by the arrow Y, so that the force of the spring 27 causes the slider 81 to move toward the support base 21 as shown by the arrow Z in FIG. 2C. Although not shown in FIG. 2C at a slight distance from the optical fiber 1, a predetermined tension is applied to the optical fiber 1 so that the optical fiber 1 is cut at the planned cutting point 1a.
In addition to the above bending stress, an appropriate tensile stress is generated, and the slider 41 and the cutter 49 slide downward until the connecting plate 45 abuts the upper surface 52a of the hydraulic damper 52, so that the optical fiber 1 is scheduled to be cut by the cutter 49. The point 1a is scratched, and the optical fiber 1 is cut with a good cut surface at the cut point 1a.

From the state of FIG. 2C after the link mechanism operates, one end 31a of the L-shaped link 31 is pushed downward to move the L-shaped link 31 in the direction of arrow X.
When the one end 31a is rotated in the direction opposite to the direction shown by to the first rotation position where the one end 31a abuts on the pedestal 11, the entire apparatus returns to the state of FIGS. 2A and 2B before the operation of the link mechanism.

The operation lever 32 does not necessarily have to be attached to the fixed pin 22 which is the center of rotation of the L-shaped link 31. Also.
The operation lever 32 may be operated not by manual operation but by appropriate driving means.

Further, the slider biasing means may be composed of a cylinder or the like.

[Advantage of Device] As described above, according to the device of the present invention, in the link mechanism capable of performing two or more output operations by one input operation, the speed or force of the operation in each output operation unit is input operation. It can be set to an arbitrary constant value irrespective of the speed or force of the operation in the section, and the desired output operation can be stably and reliably obtained.

[Brief description of drawings]

FIG. 1 shows an example of the link mechanism of the present invention, A is a front view before the operation, B is a front view after the operation, and FIG. 2 is an optical fiber using an example of the link mechanism of the present invention. A cutting device is shown, A is a front view of a state before the link mechanism is activated, B is a side sectional view of the same state, C is a partial front view of the state after the link mechanism is activated, and D is a partial view. It is a side view of a component.

Claims (1)

[Scope of utility model registration request] 1. A fixed pin, an L-shaped link that is rotatably attached to the fixed pin at an intermediate portion, and one end of the L-shaped link is pushed to move the L-shaped link from a first rotational position to a predetermined position. An operating lever for rotating the L-shaped link in a direction, a rotation restricting unit for preventing the L-shaped link from rotating in the direction opposite to the predetermined direction from the first rotation position, and a direction for approaching the fixing pin and moving away from the fixing pin. A slider that is slidable; a slider-side link that is rotatably attached to the slider at one end; a movable pin that rotatably connects the other end of the L-shaped link and the other end of the slider-side link to each other; Bias toward the fixing pin,
When the L-shaped link is rotated to the second rotation position in the predetermined direction by the operation lever, the L-shaped link is further moved to the third direction in the predetermined direction by bringing the slider close to the fixed pin. And a slider biasing means for rotating the slider to the rotating position.