JPH074753Y2 - Switch operating mechanism - Google Patents

Description

[Detailed Description of the Invention] A. Field of Industrial Application The present invention relates to a switch operating mechanism for closing a switch.

B. Outline of the Invention The present invention is a storage device that fixes a closing cam and a ratchet wheel to a storage shaft provided with a closing spring, while the tip end engages the claw of the ratchet wheel to rotate the ratchet wheel in one direction. In the operating mechanism of the switch, in which the base end of the biasing pawl is attached to the eccentric position of the rotating body that is driven to rotate, the operating line of the biasing claw and the center of the rotating body By providing a spring that biases the base end of the energizing claw in a perpendicular direction, after the closing spring is energized, the base end of the energizing claw is located at the position farthest from the reference line by the biasing force of the spring. The part is stationary, and the ratchet wheel not only rotates half a turn at the time of closing, but also further rotates due to inertial force to store the closing spring. Even if is reversely driven, the charging claw does not move and a large impact is not applied to the claw.

C. Conventional technology Fig. 3 shows the operating mechanism of a conventional switch. As shown
An operation shaft 1 and a storage shaft 2 are rotatably provided in parallel with each other, and arms 3a to 3c and an arm 4 are fixed to the operation shaft 1. The right ends of the arms 3a to 3c are rotatably connected to the lower ends of the movable lead rods 6a to 6c of the switches 5a to 5c, and a spring or a breaking spring 7 is provided between the right end of the arm 4 and the fixed portion.
Note that 8a to 8c are fixed lead rods.

On the other hand, a ratchet wheel 9, a closing cam 10 and a lever 11 are integrally attached to the energy storage shaft 2, and one end of a crank 12 perpendicular to the energy storage shaft 2 is coupled to the other end of the crank 12 and a fixed portion. A closing spring 13 is connected between and. Below the closing cam 10, a roller rotatably provided at the left end of the arm 3c.
14 engaged.

Next, a mechanism for driving the ratchet wheel 9 will be described.
A bevel gear 16 is attached to an output shaft of a motor 15 as a driving unit, and a claw 17a is formed at a tip end portion of a storage claw 17 having a base end portion rotatably coupled to an eccentric position of the bevel gear 16. . Nail 1
7a is engaged with the claw 9a of the ratchet wheel 9, and a spring 18 for urging the claw 17a toward the claw 9a is provided between the central portion of the energy storing claw 17 and the fixed portion. A stop claw 32 that prevents the ratchet wheel 9 from rotating counterclockwise in the figure is urged by the claw 9a via a spring 33. A bevel gear 19 meshes with the bevel gear 16, and a manual handle 20 is detachably attachable to an input shaft 19a integral with the bevel gear 19.

Next, a mechanism for holding the energy storage state will be described. A roller 21 is rotatably provided at the tip of the lever 11, and the lower end of a rotatably supported T-shaped closing hook 22 is a roller.
Engage with 21. 23 is a spring, 24 is a stopper, and 25 is a loading rod.

Finally, the mechanism for breaking and breaking will be described. A cross-shaped support member 27 is rotatably provided on the energy storage shaft 2 via a bearing 26. This merely serves as the shaft of the support member 27 also as the energy storage shaft 2. Numeral 28 is a spring, 29 is a stopper, 30 is a manual breaking or breaking rod, 31 is a breaking or breaking solenoid, and 34 is a roller.

The operation of the operating mechanism of such a switch will be described.

First, the power storage of the closing spring 13 will be described. The bevel gear 16 is rotated in either direction by the motor 15 or by attaching the manual handle 20 to the input shaft 19a and driving the bevel gear 19. Then, the accumulating pawl 17 whose base end is coupled to the eccentric position of the bevel gear 16 reciprocates, and the pawl 17a that engages with the pawl 9a only when moving rightward in the drawing is a ratchet wheel little by little. 9 is rotated clockwise and the stop claw 33 stops the return rotation (counterclockwise rotation) of the ratchet wheel 9 every time the energy-accelerating claw 17 moves to the left in the figure. Turn right. At the same time, the closing spring 13 is charged and the crank 12
When a half turn and a little over the dead center, the energy storage shaft 2 tries to rotate to the right due to the releasing force of the closing spring 13, but the roller 21 attached to the tip of the lever 11 engages with the lower end of the closing hook 22. The state is as shown in FIG. At this time, the rotation of the motor 15 is stopped by the action of a limit switch (not shown).

Next, the release of the closing spring 13 and the closing of the switches 5a-5c will be described. Push the closing rod 25 to the right to
The closing hook 22 rotates rightward against the urging force of the closing hook 22, and as a result, the lower end of the closing hook 22 and the roller 21 are disengaged. Therefore, the urging force of the closing spring 13 causes the accumulating shaft 2 to perform the remaining half rotation at high speed. At this time, the claw 17a and the stop claw 32
The rotation of the ratchet wheel 9 is not obstructed by the claws 17a and the stop claws 32 because of the directionality of. When the energy storage shaft 2 performs the remaining half rotation, the roller 14 is pushed downward by the rotation of the closing cam 10, and as a result, the arm 3a.about.
3c and the arm 4 rotate to the left, the movable lead rods 6a to 6c are moved upward, the switches 5a to 5c are turned on, and the spring 7 is stretched to store energy. At this time, since the left end of the arm 3a moves downward, the urging force of the spring 28 causes the stop 29
The support member 27 rotates to the left until it comes into contact with. Therefore, the roller 34 comes into contact with the lower end of the support member 27 to prevent upward movement, and the operation shaft 1 is prevented from rotating to the right despite the biasing force of the breaking spring 7. That is, the input state is maintained.

Finally, the cutting operation will be described. When the support member 27 is rotated to the right by the contact rod 30 or the contact solenoid 31, the roller 34 is disengaged from the lower end of the support member 27, and the release force of the contact spring 7 causes the operating shaft 1 to move at a high speed. To turn right.
As a result, the movable lead rods 6a to 6c move downward and the switches 5a to 5c are moved.
Pruned or cut off.

D. Problems to be solved by the invention However, the operating mechanism of such a switch has the following problems. When the closing spring 13 is released, the ratchet wheel 9 rotates more than the remaining half rotation due to the inertial force, and reversely rotates due to the stored force of the closing spring 13 (left rotation in the figure). In doing so, the claw 9a may catch on the claw 17a and the stop claw 32, giving an excessive force to them and damaging them.

Then, this invention aims at providing the operating mechanism of the switch which solved such a problem.

E. Means for Solving the Problems The structure of the present invention for achieving such an object is to connect one end of the crank at a right angle to the energy storage shaft provided rotatably and to The end and the fixed part are connected by a closing spring, and a closing cam for closing the switch and a ratchet wheel with a claw formed on the outer periphery are fixed to the accumulating shaft to prevent the ratchet wheel from rotating in one direction. A stop claw that allows rotation but prevents rotation in the other direction is rotatably provided while being biased to the claw of the ratchet wheel, while a disk-shaped rotating body is fixed to the output shaft of the drive means, and the tip of the claw is fixed. In the operating mechanism of the switch, in which the base end of the accumulating pawl that engages with the pawl of the car to drive the pawl wheel to rotate in only one direction is rotatably connected to the eccentric position of the rotating body, And one end of a spring arranged along a direction substantially perpendicular to the reference line connecting the center of the rotating body and the energy storage axis. Characterized in that attached to the fixed portion and the other end attached to the proximal end.

F. Action The stop position of the rotating body when the rotating body is driven and the energy storage of the closing spring is completed has conventionally been an arbitrary position depending on the timing at that time.

In the present invention, the connecting portion of the base end portion of the accumulating claw to the rotating body is always biased in a fixed direction. That is, the base end portion of the energy storing pawl is biased by the spring in the direction substantially perpendicular to the reference line connecting the tip of the energy storing pawl and the center of the rotating body and the energy storing axis. Therefore, the base end portion of the energy storing pawl does not stop on the reference line, but stops at a position where it can move in the length direction of the energy storing pawl.

Therefore, even if the claw of the ratchet wheel hits against the claw of the accumulating claw, the accumulating claw can move to some extent in the length direction, and there is little risk of damage to the claw.

G. Embodiment Hereinafter, the present invention will be described based on an embodiment shown in the drawings.
Since this embodiment is an improvement of a part of the conventional switch operating mechanism, the same parts are designated by the same reference numerals, and the description thereof will be omitted. Only different parts will be described.

FIG. 1 is a configuration diagram showing the vicinity of a ratchet wheel which is a main part of an operating mechanism of a switch. As shown in the figure, the base end portion of the energy storage pawl 17 is rotatably coupled to the eccentric position of the bevel gear 17 via a bolt 40 or the like, and the pawl 17a at the tip end engages with the pawl 9a of the ratchet wheel 9. ing. As shown in FIG. 2, the accumulating claw 17 is formed by joining a pair of plate members with a space therebetween, and the claw 17a is provided between the plate members.

The present invention extends in a direction substantially perpendicular to the reference line 41 connecting the center of the bevel gear 16 as a rotating body and the claw 17a of the accumulator shaft 17 and substantially perpendicular to the accumulator shaft 2. Then, the spring 42 is arranged, one end of the spring 42 is connected to the base end portion of the energy storage claw 17, and the other end is rotatably connected to the fixed portion via the stay 43 and the pin 44.

According to the operation mechanism of such a switch, the bevel gear 16 and the energy storage pawl 17 are
The bolt 40, which is the center of rotation with respect to the base end portion, is always biased toward the pin 44. Therefore, when the charging of the closing spring 13 is completed and the rotation of the motor 15 is stopped, the bolt 40 is stopped at an arbitrary position in the circumferential direction according to the timing at that time, whereas the spring 40 is stopped. The urging force of 42 always stops between the reference line 41 and the pin 44.

Due to the release of the closing spring 13, the ratchet wheel 9 makes the other half rotation and then overrotates due to inertial force.
When the ratchet wheel 9 rotates counterclockwise in FIG.
Although 17a is caught on the claw 9a, the bevel gear 16 is rotated to a position where the energy storing claw 17 receives a force in the lengthwise direction of the energy storing claw 17 so that the bevel gear 16 can rotate.
Since there are 40, there is little risk that the nail 17a and the nail 9a are damaged by being applied with an excessive force.

Conventionally, since the bolt 40 stops at an arbitrary position in the circumferential direction depending on the timing at that time, the bolt 40 may stop on the reference line 41, and even if the energy storing pawl 17 receives a force in its longitudinal direction. Although the bevel gear 16 is not rotated and the pawl 17a and the pawl 9a are likely to be damaged, the present invention is less likely to cause such damage. On the other hand, since the load exerted by the spring 42 on the charging claw 17 is small, no new problem occurs.

When the ratchet wheel 9 rotates in the reverse direction, the stop claw 32 also catches on the claw 9a, but there is no problem because the stop claw 32 has the strength to withstand the impact force applied at this time. The stop claw 32 itself may not be fixed, but may be moved in the circumferential direction of the ratchet wheel 9, and the movement in the circumferential direction may be elastically restrained by using a spring.

In this embodiment, the base end portion of the accumulating claw 17 is biased to the upper right of the reference line in FIG. 1, but it may be biased to the lower left. Although the bevel gear is used as the rotating body, the operating mechanism of the switch according to the present embodiment is a bevel gear because it has a manual handle, and the invention is not limited to this.

H. Effect of the Invention As described above, according to the switch operating mechanism of the present invention, the switch is arranged in a direction substantially perpendicular to the reference line connecting the claw of the accumulating claw and the center of the rotating body and the accumulating axis. Since the spring is provided between the base end of the energy storage pawl and the fixed portion, the base end of the energy storage pawl is located at a position away from the reference line by the action of the spring when the energy storage of the closing spring is completed. When stopped, the charging claw is in an unfixed state in which it can move in its longitudinal direction. Therefore, after the closing spring is released, the ratchet wheel excessively rotates due to inertial force, and the accumulated force of the closing spring thus accumulated causes the ratchet wheel to rotate in the reverse direction to cause the accumulation claw and the ratchet wheel. Even if the two claws are hit by each other, the energy storing claws move in the lengthwise direction to absorb the impact force, and there is little possibility that these claws will be damaged.

[Brief description of drawings]

1 and 2 relate to an embodiment of a switch operating mechanism according to the present invention. FIG. 1 is a configuration diagram showing a main part, FIG. 2 is a view taken along the line II of FIG. 1, and FIG. FIG. 1 is a configuration diagram showing a conventional switch operating mechanism. 2 ... Energy storage shaft, 5a, 5b, 5c ... Switch, 9 ... Claw wheel, 9a ...
… Pawls, 10 …… Closing cam, 12 …… Crank, 13 …… Closing spring, 15 …… Motor, 16 …… Bevel gear, 16a …… Center, 17…
… Storing claw, 17a …… Claw, 32 …… Stop claw, 33 …… Spring, 41 …… Reference line, 42 …… Spring.

Claims (1)

[Scope of utility model registration request] 1. A rotatably provided accumulator shaft is connected with one end of a crank at right angles to the accumulator shaft, and the other end of the crank and a fixed portion are connected with a closing spring to close a switch. The closing cam for fixing the closing cam and the ratchet with the claw formed on the outer periphery to the accumulator shaft to allow the ratchet to rotate in one direction but prevent the ratchet from rotating in the other direction. While being rotatably provided in a biased state, a disk-shaped rotating body is fixed to the output shaft of the drive means, and the tip end engages with the pawl of the ratchet wheel to rotate the ratchet wheel in only one direction. In the operating mechanism of a switch in which the base end of the biasing pawl is rotatably connected to the eccentric position of the rotating body, a reference line connecting the pawl of the biasing pawl and the center of the rotating body One end of the spring arranged along the different direction is connected to the base end of the energy storage pawl and the other end is connected to the fixed part. Operating mechanism of the closure.