JP5330168B2 - Switchgear operating mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress damage or the like of structural components of an operating mechanism of an opening/closing device. <P>SOLUTION: The operating mechanism of the opening/closing device includes a support structure 4, a loading shaft 3 rotatably supported by the support structure 4, a ratchet wheel 22 rotating together with the loading shaft 3, a feed lever 20 having a roller 28 for a feed lever which can rotate around an axis extending in parallel to the loading shaft 3 in a periphery of an outer circumference, a stop lever 21 by which an energy storing cam 29 and the roller 28 for a feed lever can be in contact with each other in a circumferential direction, and a stopper 41. The stopper 41 is adjacent to the stop lever 21 and is arranged to sandwich the energy storing cam 29 with the roller 28 for a feed lever, and includes a first plate member 40 engageable with the stop lever 21, a stopper pin 42 engageable with the first plate member 40, a stopper guide 45 having a guide part 45a of the stopper pin 42 and stopping the movement in a direction separating from the first plate member 40, and a non-linear elastic member 43 sandwiched between the first plate member 40 and the stopper guide 45. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an opening / closing device operating mechanism for operating an opening / closing operation of a switching device such as a circuit breaker.

  Generally, a switchgear has a switchgear operating mechanism that operates a switching operation such as a movable contact. The opening / closing device operating mechanism rotates the feed claw by rotating the motor to rotate the claw wheel, and rotates the input shaft by the claw wheel to accumulate the input spring via the input lever. The opening / closing device is turned on by releasing the stored closing spring.

  As such an opening / closing device operating mechanism, for example, one disclosed in Patent Document 1 is known.

JP 2007-188775 A

  However, in the configuration of the opening / closing device operating mechanism as described above, the reverse rotation of the claw wheel during the closing operation may be stopped by the first claw. In this case, since the impact force at the time of stop is received by the first pawl, cam roller, energy storage cam, stopper, cam clutch, etc., there is a possibility that the component receiving the impact force is damaged and the life of the component is reduced. is there.

  In the above example, the reverse rotation of the ratchet wheel during the closing operation may be stopped at the second claw or the third claw. When the second claw or the third claw bites into the claw wheel, there is a possibility that the outer peripheral teeth of the claw wheel are deformed due to the collision of the tips of the claw and the energy cannot be stored.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to suppress damage and the like of components of the switchgear operating mechanism.

In order to achieve the above object, a switching device operating mechanism according to the present invention is a switching device operating mechanism that reciprocally drives a movable contact of a switching device to shift the switching device between a shut-off state and a closing state. A support structure, an input shaft extending in the first axial direction and rotatably supported by the support structure, and a substantially disc shape fixed to the input shaft and rotating together with the input shaft. A claw wheel having a plurality of outer peripheral teeth formed along the circumferential direction on the outer circumferential side surface, and a plate-like shape that is arranged side by side in the axial direction on the claw wheel and can swing around the input shaft in the circumferential direction A feed lever provided with a feed lever roller that is rotatable around an axis extending in parallel with the input shaft in the vicinity of the outer periphery, and is arranged side by side in the first axial direction on the feed lever. Swing around the circumference It has a plate shape and is provided with an accumulating cam that can rotate around a second axis extending in parallel with the input shaft in the vicinity of the outer periphery, and the accumulating cam and the feed lever roller can be in contact with each other in the circumferential direction. A stop lever, a drive unit capable of transmitting power for swinging to the feed lever, and a power unit attached to the feed lever and engageable with the outer peripheral teeth and transmitted from the drive unit. Is transmitted to the claw wheel to rotate the claw wheel and the insertion shaft in at least one direction, and is attached to the stop lever and engaged with the claw wheel, so that the claw wheel and the insertion shaft are A plurality of retaining claws that suppress reverse rotation with respect to the one direction; a closing spring configured to expand and contract with rotation of the closing shaft; and a fixing spring fixed to the closing shaft; rotation A closing lever for extending and retracting the closing spring, a catch portion capable of holding the closing spring in a stored state, a closing cam fixed to the closing shaft and rotating together with the closing shaft, and rotation of the stop lever In the opening / closing device operating mechanism, the stopper is adjacent to the stop lever, and is disposed so as to sandwich the energy storage cam together with the feed lever roller, and is formed in the stop lever. A first plate member configured to be engageable with the first engagement portion, and reciprocally movable in a predetermined direction, and configured to be engageable with a second engagement portion formed on the first plate member. A stopper pin and a guide portion are formed so as to restrict the movement of the stopper pin in the reciprocating direction, and the first plate member is disposed so as to sandwich the first plate member together with the first engagement portion. A stopper guide configured to stop the movement of the plate material in the direction away from the first engaging portion, and disposed so as to be sandwiched between the first plate material and the stopper guide, and contracted in the predetermined direction possible, and nonlinear elastic member spring constant when the displacement larger than the spring constant when the displacement is small is configured so as to increase the possess, when the ratchet wheel is rotated in the reverse direction, said plurality of When at least one of the pawls comes into contact with the tip of the outer peripheral tooth of the claw wheel, the spring constant of the nonlinear elastic member is small, and at least one of the plurality of pawls of the claw wheel is at the time when the ratchet wheel deeply enters the root of the outer peripheral teeth is stopped, the spring constant of the non-linear elastic member and said large Do Rukoto.

  ADVANTAGE OF THE INVENTION According to this invention, it is possible to suppress the damage of the component of a switchgear operating mechanism, etc.

It is an expansion | deployment front view of 1st Embodiment of the switchgear operating mechanism which concerns on this invention, Comprising: The state which the accumulation of the closing spring is completed is shown. FIG. 2 is a developed front view showing a state in the middle of the input shaft and the like rotating in the direction of arrow A in the embodiment of FIG. 1. FIG. 3 is a developed front view showing a state in which the distance between the support structure and the pin for the spring receiving member is maximized while the closing shaft and the like are rotating in the direction of arrow A after the state of FIG. 2. FIG. 4 is a development front view showing a state immediately after the rotation of the input shaft is stopped after the state of FIG. 3. FIG. 5 is an enlarged front view in which the vicinity of an energy storage cam and a feed lever roller in FIG. 4 is enlarged. It is an enlarged front view which shows the states of the stopper of FIG. It is an enlarged front view which shows the outer periphery tooth | gear and 1st nail | claw of FIG. FIG. 2 is a developed front view showing a state in which the closing spring is released and is waiting for the next storage in the embodiment of FIG. 1. It is a front view of the partial cross section which shows the state by which the nonlinear elastic member of the stopper of FIG. 1 was compressed. It is the graph which showed the relationship between the displacement and load in the nonlinear elastic member of FIG. It is a front view of the partial cross section of the stopper of 2nd Embodiment of the switchgear operating mechanism which concerns on this invention. FIG. 12 is a partial cross-sectional front view illustrating a state in which the high-rigid elastic body and the low-rigid elastic body in FIG. 11 are compressed. It is a front view of the partial cross section of the stopper of 3rd Embodiment of the switchgear operating mechanism which concerns on this invention. It is a front view of the partial cross section of the stopper of 4th Embodiment of the switchgear operating mechanism which concerns on this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a switchgear operating mechanism according to the present invention will be described with reference to the drawings.

[First Embodiment]
A first embodiment according to the present invention will be described with reference to FIGS. FIG. 1 is a developed front view of the opening / closing device operating mechanism of the present embodiment, and shows a state where the charging of the closing spring 1 is completed. FIG. 2 is a developed front view showing a state where the input shaft 3 and the like in FIG. 1 are rotating in the arrow A direction. FIG. 3 is a developed front view showing a state in which the distance between the support structure 4 and the spring receiving member pin 5 becomes the largest while the closing shaft 3 or the like is rotating in the direction of arrow A after the state of FIG. is there. FIG. 4 is an exploded front view showing a state immediately after the rotation of the making shaft 3 is stopped after the state of FIG. FIG. 5 is an enlarged front view in which the vicinity of the accumulating cam 29 and the feed lever roller 28 of FIG. 4 is enlarged. FIG. 6 is an enlarged front view showing a state of the stopper 41 and the like in FIG. FIG. 7 is an enlarged front view showing the outer peripheral teeth 22a, the first pawls 24a, and the like of FIG. FIG. 8 is a developed front view showing a state in which the closing spring 1 of FIG. 1 is released and is waiting for the next energy storage. FIG. 9 is a partial cross-sectional front view showing a state where the nonlinear elastic member 43 of the stopper 41 of FIG. 1 is compressed. FIG. 10 is a graph showing the relationship between displacement and load in the nonlinear elastic member.

  1 to 4 and 8, the input shaft 3 shows only the axis center, and details of the shape and the like are omitted.

  First, the configuration of the opening / closing device operating mechanism of this embodiment will be described.

  The opening / closing device operating mechanism of the present embodiment has a support structure 4, and an input shaft 3 extending in the direction of the first shaft 51 is rotatably supported by the support structure 4.

  A closing lever 10 having a surface extending perpendicular to the direction of the first axis 51 is fixed to the closing shaft 3. The making lever 10 is arranged so that the making shaft 3 penetrates substantially at the center in the longitudinal direction, and is fixed at the penetrating portion so as to be rotatable with the turning of the making shaft 3.

  A closing lever pin 10 b extending in parallel with the first shaft 51 is fixed to one end of the closing lever 10. One end of the link member 2 is rotatably connected to the input lever pin 10b. A closing spring 1 is disposed near the other end of the link member 2.

  The closing spring 1 is disposed between the support structure 4 and the spring receiving member 6 so as to be stretchable. The spring receiving member 6 is configured to be movable in the expansion / contraction direction as the closing spring 1 expands and contracts. 1 shows a state where the closing spring 1 is contracted and stored as described above.

  A spring receiving member pin 5 is fixed to the spring receiving member 6. One end of the link member 2 is rotatably connected to the spring receiving member pin 5. The link lever 2 connects the closing lever 10 and the spring receiving member 6 to each other.

  The closing lever 10 is formed with a closing lever claw 10a in the vicinity of the closing lever pin 10b. The closing lever claw 10 a is configured to be engageable with an engaging lever 11 c disposed in the vicinity of the closing lever 10.

  The support structure 4 has a catch portion 11 that can hold the state where the closing spring is stored. The catch portion has a solenoid 11a and a plunger 11b. The engagement lever 11 c is included in the catch portion 11. The solenoid 11a is configured to be excited in response to an input command from the outside, and the plunger 11b is configured to press the engagement lever 11c with the excitation of the solenoid 11a.

  A claw wheel 22 that rotates with the charging shaft 3 is fixed to the charging shaft 3. The ratchet wheel 22 is disposed in the direction of the first shaft 51 with a gap from the closing lever 10. The ratchet wheel 22 has a disk shape, and a plurality of outer peripheral teeth 22a are formed on the outer peripheral side surface.

  In addition, the feed shaft 20 and the stop lever 21 are arranged on the closing shaft 3 so as to be adjacent to the claw wheel 22 in the direction of the first shaft 51. Each of the feed lever 20 and the stop lever 21 is a plate-like member that can swing around the closing shaft 3 in the circumferential direction.

  A feed lever roller 28 is disposed near the outer periphery of the feed lever 20. The feed lever roller 28 is rotatable around an axis extending parallel to the charging shaft 3. As for the stop lever 21, the energy storage cam 29 is arrange | positioned near outer periphery. The energy storage cam 29 is rotatable around a second axis 53 extending in parallel with the closing shaft 3. The feed lever roller 28 arranged on the feed lever 20 and the accumulating cam 29 arranged on the stop lever 21 are configured to be able to contact each other in the circumferential direction.

  The feed lever 20 is always subjected to a spring force so as to rotate around the closing shaft 3 in a direction opposite to the direction indicated by the arrow A in FIG. However, the rotation of the feed lever 20 is limited by the accumulation cam 29 engaging with the feed lever roller 28.

  When the energy accumulation cam 29 is pushed in the direction opposite to the arrow A direction by the feed lever roller 28, the stop lever 21 tries to rotate in the direction opposite to the arrow A direction. This rotation is restrained by a stopper 41 attached to the support structure 4. The configuration of the stopper 41 will be described later.

  A feed claw 23 is disposed on the feed lever 20. The feed claw 23 is arranged so as to be rotatable around an axis extending in parallel with the first shaft 51 and to be engaged with the outer peripheral teeth 22 a of the claw wheel 22. Further, the feed claw 23 is pushed by the feed claw return spring 26a toward the closing shaft 3 from the outside in the radial direction so that the feed claw 23 is always engaged with the outer peripheral teeth 22a.

  Two retaining pawls, that is, a first retaining pawl 24a and a second retaining pawl 24b, are disposed on the retaining lever 21 so as to be adjacent to each other. Each of the first pawls 24a and the second pawls 24b is disposed so as to be rotatable about an axis extending in parallel with the first shaft 51 and to be engaged with the outer peripheral teeth 22a of the claw wheel 22. . Each of the first and second pawls 24a and 24b is always made up of the first and second pawls 24a and 24b by the first pawl return spring 26b and the second pawl return spring 26c, respectively. It is pushed toward the closing shaft 3 from the outside in the radial direction so as to engage with the outer peripheral teeth 22a.

  The stop lever 21 is connected to the drive unit 7 that transmits power for swinging the feed lever 20. The drive unit 7 includes a motor 7a serving as a power source, a speed reduction mechanism 7b that decelerates the rotation of the motor 7a, and a power transmission shaft 7c.

  The power transmission shaft 7 c is disposed so as to be coaxial with the second shaft 53 serving as the rotation center of the energy storage cam 29, and is fixed to the energy storage cam 29. The rotation of the motor 7a is transmitted to the accumulating cam 29 by the power transmission shaft 7c through the speed reduction mechanism 7b. The power transmission shaft 7 c is rotatably supported by the stop lever 21.

  Further, the stop lever 21 is provided with a collision avoidance mechanism 90 configured to engage the stop lever 21 with the feed lever 20. Here, a detailed configuration of the collision avoidance mechanism 90 will be described.

  The collision avoidance mechanism 90 includes a substantially L-shaped L-shaped lever 31, a collision avoidance lever 30 connected to the L-shaped lever 31, and a plurality of pins for connecting them.

  A first pin 32 a extending in parallel with the first shaft 51 is fixed to the feed lever 20. A collision avoidance lever 30 is connected to be rotatable around the first pin 32a. The collision avoidance lever 30 is a long plate-like member having a surface extending perpendicularly to the first shaft 51, and a first pin 32a is connected in the vicinity of one end. The collision avoiding lever 30 is formed with a long hole 30a extending from the vicinity of the end opposite to the end connected to the first pin 32a to the vicinity of the center.

  A second pin 32 b extending in parallel with the first shaft 51 is fixed to the stop lever 21. An L-shaped lever 31 is fixed so as to be rotatable around the second pin 32b.

  The L-shaped lever 31 is a plate-like member in which a first long plate portion 31a and a second long plate portion 31b having surfaces extending perpendicularly to the first shaft 51 extend substantially perpendicular to each other from the intersecting portion 31c. The shape when viewed from the direction of the first axis 51 is a substantially L-shape. In the example of FIG. 1, the first long plate portion 31 a is closer to the feed lever 20, and the second long plate portion 31 b is closer to the feed lever 20. The second pin 32b passes through the intersecting portion 31c, and an L-shaped lever 31 is rotatably attached around the second pin 32b.

  A third pin 32c extending in parallel with the first shaft 51 is fixed to the end of the second long plate portion 31b. The third pin 32c is disposed so as to penetrate the elongated hole 30a of the collision avoidance lever 30, and the third pin 32c is configured to be movable along the longitudinal direction of the elongated hole 30a.

  Further, the L-shaped lever 31 is held stationary by the first balance spring 27a and the second balance spring 27b installed on the support structure 4 so as not to rotate around the second pin 32b.

  Between the 1st long plate part 31a and the 2nd long plate part 31b, the 4th pin 17 which adheres to the operation lever 15 mentioned later and extends in parallel with the 1st axis | shaft 51 is the 1st long plate part 31a and It arrange | positions so that a contact with each 2nd long plate part 31b. A closing cam 14 that can rotate together with the charging shaft 3 is attached to the charging shaft 3.

  An operation lever 15 is disposed in the vicinity of the closing cam 14 so as to be in contact therewith. The operation lever 15 has a long plate shape having a surface extending perpendicularly to the first shaft 51. The operation lever 15 can rotate around an operation lever rotation shaft 15 b extending in parallel to the first shaft 51. The operating lever rotating shaft 15 b is fixed to the vicinity of one end of the operating lever 15.

  An operation lever roller 15 a that is rotatable about an axis parallel to the first shaft 51 is supported on the other end (front end side) of the operation lever 15. The operation lever roller 15 a is disposed so as to be able to contact the closing cam 14.

  The fourth pin 17 is fixed to a surface of the operation lever 15 that extends perpendicular to the direction of the first axis 51. The fourth pin 17 is disposed between the operating lever rotating shaft 15b and the operating lever roller 15a. The L-shaped lever 31 and the operation lever 15 are configured to be engageable with each other via the fourth pin 17.

  Here, the detailed structure of the stopper 41 will be described below. As shown in FIG. 6, the stopper 41 includes a first plate member 40 that engages with the stop lever 21, a stopper pin 42 that can reciprocate linearly in a predetermined direction as the first plate member 40 moves, A stopper guide 45 that guides the movement of the stopper pin 42 in a predetermined direction and a nonlinear elastic member 43 are provided.

  The stopper 41 is a member for stopping the rotation of the stop lever 21 in the reverse direction of the arrow A. A first recess 61 is formed in the stop lever 21 in contact with the stopper 41 at a position where the accumulating cam 29 is sandwiched in the circumferential direction together with the feed lever roller 28.

  The first plate member 40 is formed with a first convex portion 62 that can be engaged with a first concave portion 61 formed in the stop lever 21. The first concave portion 61 and the first convex portion 62 are connected while maintaining a fitted state. The first plate member 40 is movable along the direction in which the stop lever 21 rotates. In addition, you may comprise the connection part of the 1st board | plate material 40 and the stop lever 21 so that plane parts may contact, without forming such an engaging part.

  A second recess 63 is formed on the first plate member 40 on the back side of the first protrusion 62. A rod-like stopper pin 42 is detachably fitted in the second recess 63. The stopper guide 45 is formed with a guide portion 45a for restricting the movement of the stopper pin 42 so as to be linearly reciprocated, and the stopper pin 42 is configured to be slidable back and forth by the guide portion 45a.

  The non-linear elastic member 43 is disposed between the stopper guide 45 and the first plate member 40, and is disposed so as to contact the stopper guide 45 and the first plate member 40 and through the stopper pin 42. The nonlinear elastic member 43 can be expanded and contracted in the direction in which the stopper pin 42 reciprocates.

  As shown in FIG. 10, the non-linear elastic member 43 is formed so that the spring constant increases with a predetermined amount of displacement X as a boundary.

  Next, the operation during the closing operation of the switchgear operating mechanism of the present embodiment will be described.

  When the solenoid 11a is excited by an external input command, the plunger 11b presses the engagement lever 11c. The pressed engagement lever 11c rotates counterclockwise in FIG. 1, and the engagement of the engagement lever 11c and the closing lever claw 10a is released.

  As a result, the closing shaft 3 rotates in the direction of arrow A by the spring force of the closing spring 1. At this time, the rotational force of the closing shaft 3 is transmitted to the blocking portion (not shown), the blocking spring portion (not shown), etc. via the closing cam 14 and the operation lever 15, and the blocking portion is turned on and the blocking spring. Is stored.

  Further, as shown in FIG. 6, the stop lever 21 at this time is pushed in the rotation direction of the hook wheel 22 (direction of arrow A) by the repulsive force of the nonlinear elastic member of the stopper 41.

  As the closing operation proceeds, the fourth pin 17 fixed to the operation lever 15 contacts the first long plate portion 31a of the L-shaped lever 31, and the direction from the second long plate portion 31b to the first long plate portion 31a. The 1st long plate part 31a is pressed to. Thereby, as shown in FIG. 2, the L-shaped lever 31 rotates in the direction of arrow B around the second pin 32b.

  When the L-shaped lever 31 rotates, the third pin 32c provided at the end of the second long plate portion 31b pulls the collision avoidance lever 30 through the long hole 30a provided in the collision avoidance lever 30, and as a result, The feed lever 20 is pulled in the direction of arrow B. As a result, the feed lever 20 rotates in the direction of arrow C. The rotation of the feed lever 20 disengages the feed lever roller 28 and the accumulating cam 29, and a gap 70 is formed between the feed lever roller 28 and the accumulating cam 29 in the circumferential direction as shown in FIG. It is formed.

  When the closing lever 10 reaches a position (dead point) as shown in FIG. 3, that is, a state where the distance between the support structure 4 and the spring receiving member pin 5 is the largest, the accumulating of the cutoff spring is completed. At this time, the engagement of the fourth pin 17 and the L-shaped lever 31 is also released. That is, the fourth pin 17 is not between the first long plate portion 31a and the second long plate portion 31b of the L-shaped lever 31.

  The throw lever 10 further rotates in the direction of arrow A beyond the dead point state by the inertial force of the throw spring 1, the throw lever 10, the claw wheel 22 and the throw cam 14 from the dead point state of FIG. To do. By this rotation, the closing spring 1 is stored again as shown in FIG. At this time, the closing lever 10 decelerates the rotation speed to zero while accumulating the closing spring 1.

  Thereafter, the closing lever 10 rotates in the direction opposite to the arrow A by the stored spring force of the closing spring 1. At this time, the ratchet wheel 22 also rotates in the direction opposite to the arrow A. The reverse rotation of the ratchet wheel 22 is stopped when at least one of the first pawl 24a and the second pawl 24b meshes with the outer peripheral teeth 22a. Alternatively, the feeding claw 23 and the outer peripheral teeth 22a may mesh with each other and stop.

  Here, in FIG. 5, when viewed from the direction of the first shaft 51, the gap 70 is defined as a straight line L <b> 1 connecting the shaft center of the closing shaft 3 (first shaft 51) and the rotation center of the energy storage cam 29. The angle formed by the straight line L2 connecting the first shaft 51 and the rotation center of the feed lever roller 28 is represented as θa, while the circumferential end of one tooth of the outer peripheral teeth 22a and the first shaft 51, respectively. The angle formed by the straight lines connecting the two is θb. For example, when the reverse rotation of the claw wheel 22 is stopped by the first pawl 24a meshing with one outer peripheral tooth 22a, the rotation angle at which the claw wheel 22 can move in the reverse rotation is θb at the maximum. Since each outer peripheral tooth 22a is formed in the same manner, even if the second pawl 24b and the feed pawl 23 are engaged with each other, the reverse rotation angle of the ratchet wheel 22 is θb at the maximum.

  Therefore, by making θa which is the gap 70 sufficiently larger than θb, it is possible to prevent the feeding lever roller 28 from colliding with the energy accumulation cam 29 when the ratchet wheel 22 rotates in the reverse direction. .

  On the other hand, as shown in FIG. 6, when the ratchet wheel 22 rotates in the reverse direction and at least one of the first pawl 24a and the second pawl 24b comes into contact with the tip of the outer peripheral tooth 22a, the stop lever 21 moves to the stopper 41. Apply load. When the stop lever 21 applies a load to the stopper 41, the stop lever 21 sinks in the compression direction in the arrow D direction while compressing the nonlinear elastic member 43 together with the first plate member 40.

  Since the spring constant of the nonlinear elastic member 43 at this time is in a small state, as shown in FIG. 9, each of the first retaining pawl 24 a and the second retaining pawl 24 b By the spring force of the return claw return spring 26b and the second return claw return spring 26c, the root of the outer peripheral teeth 22a can be entered while facing the direction of arrow E.

  When at least one of the first pawl 24a and the second pawl 24b penetrates deeply into the root of the outer peripheral tooth 22a, for example, as shown in FIG. 7, the first pawl 24a penetrates deeply into the outer peripheral tooth 22a. At this time, the ratchet wheel 22 stops and the stop lever 21 receives an impact. This impact is propagated to the stopper 41. The compression displacement of the nonlinear elastic member 43 increases due to the impact propagated to the stopper 41, and exceeds a predetermined amount of displacement X, increasing the spring constant. Thereby, the impact which the stop lever 21 receives is relieved.

  Thereafter, as shown in FIG. 8, the first plate member 40 is engaged with the stopper guide 45, and the reverse rotation of the ratchet wheel 22 is stopped. After the reverse rotation is stopped by the first pawl 24a or the second pawl 24b, the feed lever roller 28 and the accumulating cam 29 are engaged again by the feed lever return spring 25 attached to the feed lever 20.

  According to the present embodiment, the reverse rotation of the claw wheel 22 during the closing operation is stopped in a state in which at least one of the first pawl 24a and the second pawl 24b enters the root of the outer peripheral teeth 22a. The contact area between the first or second pawl 24b and the outer peripheral teeth 22a increases. As a result, the surface pressure can be reduced, and the bending moment to the outer peripheral teeth 22a can be reduced.

  Further, since the impact force is alleviated by the non-linear elastic member, it is possible to prevent the outer peripheral teeth 22a from being deformed and becoming unable to store energy.

  Further, the reverse rotation of the ratchet wheel 22 immediately before the closing operation is completed is stopped at least one of the first pawl 24a and the second pawl 24b, and the damage to the feed lever roller 28 and the energy storage cam 29 is suppressed. Therefore, it becomes possible to suppress the lifetime reduction of these members.

[Second Embodiment]
A second embodiment of the switchgear operating mechanism according to the present invention will be described with reference to FIGS. 11 and 12.

  FIG. 11 is a front view of a partial cross section of the stopper 41 of the present embodiment, showing a state where the low-rigid elastic member 44b is compressed. FIG. 12 is a partial cross-sectional front view showing a state in which the high-rigidity elastic member 44a of the stopper 41 in FIG. 11 is compressed. In addition, this embodiment is a modification of 1st Embodiment, Comprising: The same code | symbol is attached | subjected to the same part or similar part as 1st Embodiment, and duplication description is abbreviate | omitted.

  In this embodiment, as shown in FIGS. 11 and 12, a highly rigid elastic member 44 a such as a disc spring is disposed between the first plate member 40 and the stopper guide 45, and a coil spring is provided around the stopper pin 42. A low-rigidity elastic member 44b such as is arranged.

  In the region where the displacement is small (the region below the predetermined value X in FIG. 10), as shown in FIG. In the region where the displacement is large, the high-rigidity elastic member 44a corresponding to the state where the spring constant is large acts as shown in FIG.

  Thereby, the effect similar to 1st Embodiment can be acquired.

[Third Embodiment]
A third embodiment of the switchgear operating mechanism according to the present invention will be described with reference to FIG. FIG. 13 is a front view of a partial cross section of the stopper 41 of the present embodiment. In addition, this embodiment is a modification of 2nd Embodiment, Comprising: The same code | symbol is attached | subjected to the same part or similar part as 2nd Embodiment, and duplication description is abbreviate | omitted.

  In the present embodiment, as shown in FIG. 13, the buffer member 46 is disposed between the highly rigid elastic member 44 a and the stopper guide 45. For the buffer member 46, for example, a rubber sheet, a low-rebound polymer compound, or the like may be used.

  By sandwiching the buffer member 46, the impact force transmitted to the stop lever 21 and the like during the closing operation can be further reduced. Thereby, compared with 1st and 2nd embodiment, the effect of a deformation | transformation suppression of the outer periphery tooth | gear 22a can be heightened.

[Fourth Embodiment]
A fourth embodiment of the switchgear operating mechanism according to the present invention will be described with reference to FIG. FIG. 14 is a front view of a partial cross section of the stopper 41 of the present embodiment. In addition, this embodiment is a modification of 3rd Embodiment, Comprising: The same code | symbol is attached | subjected to the same part or similar part as 3rd Embodiment, and duplication description is abbreviate | omitted.

  In the present embodiment, the stop lever 21 is formed by two plate members, a first stop lever plate 81 and a second stop lever plate 82, which are spaced apart from each other in the direction of the first shaft 51. The first convex portion 62 is sandwiched between these plates.

  Thereby, positioning of the stop lever 21 can be performed accurately.

[Other Embodiments]
The description of the above embodiment is an example for explaining the present invention, and does not limit the invention described in the claims. Moreover, each part structure of this invention is not restricted to the said embodiment, A various deformation | transformation is possible within the technical scope as described in a claim.

  For example, the buffer member 46 of the third embodiment may be used in the first embodiment.

  Further, the first long plate portion 31a and the second long plate portion 31b of the L-shaped lever 31 are substantially L-shaped plate members that extend substantially perpendicular to each other from the intersecting portion 31c, but are not limited thereto. The angle formed between the first long plate portion 31a and the second long plate portion 31b may be larger than 0 degree and smaller than 180 degrees.

DESCRIPTION OF SYMBOLS 1 ... Input spring, 2 ... Link member, 3 ... Input shaft, 4 ... Support structure, 5 ... Pin for spring receiving member, 6 ... Spring receiving member, 7 ... Drive part, 7a ... Motor, 7b ... Deceleration mechanism, 7c ... power transmission shaft, 10 ... closing lever, 10a ... closing lever claw, 10b ... closing lever pin, 11 ... catch portion, 11a ... solenoid, 11b ... plunger, 11c ... engaging lever, 14 ... closing cam, 15 ... Operation lever, 15a ... Operation lever roller, 15b ... Operation lever rotating shaft, 17 ... Fourth pin, 20 ... Feed lever, 21 ... Stop lever, 22 ... Claw wheel, 22a ... Outer teeth, 23 ... Feed claw, 24a 1st stop pawl, 24b ... 2nd stop pawl, 25 ... Feed lever return spring, 26a ... Feed pawl return spring, 26b ... 1st stop pawl return spring, 26c ... 2nd stop pawl return spring, 27a ... the first balance 27b ... second balance spring, 28 ... feed lever roller, 29 ... accelerating cam, 30 ... collision avoidance lever, 30a ... long hole, 31 ... L-shaped lever, 31a ... first long plate portion, 31b ... second Long plate portion, 31c ... intersection, 32a ... first pin, 32b ... second pin, 32c ... third pin, 40 ... first plate material, 41 ... stopper, 42 ... stopper pin, 43 ... nonlinear elastic member, 44a ... high rigidity elastic member, 44b ... low rigidity elastic member, 45 ... stopper guide, 45a ... guide part, 46 ... buffer member, 51 ... first axis, 53 ... second axis, 61 ... first recess, 62 ... 1st convex part, 63 ... 2nd recessed part, 70 ... gap | interval, 81 ... 1st stop lever plate, 82 ... 2nd stop lever plate, 90 ... collision avoidance mechanism part

Claims (5)

A switching device operating mechanism for reciprocating the movable contact of the switching device to shift the switching device between the shut-off state and the on-state,
A support structure;
An input shaft extending in a first axial direction and rotatably supported by the support structure;
A substantially disk-like shape that is fixed to the input shaft and rotates together with the input shaft, and a toothed wheel having a plurality of outer peripheral teeth formed along a circumferential direction on the outer peripheral side surface;
A feed lever roller which is arranged side by side in the axial direction on the ratchet wheel and is capable of rotating around the input shaft in the circumferential direction and rotatable around an axis extending in parallel with the input shaft near the outer periphery. A feed lever with
The feed lever is arranged side by side in the first axial direction and is a plate that can swing in the circumferential direction around the input shaft, and around a second axis that extends in the vicinity of the outer periphery and parallel to the input shaft. A stop lever provided with a rotatable energy storage cam, and configured so that the energy storage cam and the feed lever roller can contact each other in the circumferential direction;
A drive unit capable of transmitting power for swinging to the feed lever;
A feed claw that is attached to the feed lever and is engageable with the outer peripheral teeth, transmits the power transmitted from the drive unit to the claw wheel, and rotates the claw wheel and the input shaft in at least one direction;
A plurality of pawls attached to the pawl and engaging the pawl to prevent the pawl wheel and the input shaft from rotating backward with respect to the one direction;
A closing spring configured to expand and contract with rotation of the closing shaft;
A closing lever fixed to the closing shaft and extending and retracting the closing spring by rotation of the closing shaft;
A catch portion capable of holding a state in which the closing spring is stored;
An input cam fixed to the input shaft and rotating together with the input shaft;
A stopper for suppressing rotation of the stop lever;
In a switchgear operating mechanism having
The stopper is
A first plate member adjacent to the stop lever and disposed so as to sandwich the accumulating cam together with the feed lever roller and configured to be engageable with a first engagement portion formed on the stop lever; ,
A stopper pin configured to be able to reciprocate in a predetermined direction and engageable with a second engagement portion formed on the first plate member;
A guide portion is formed so as to restrict the movement of the stopper pin in the reciprocating direction, and the first plate member is disposed so as to sandwich the first plate member together with the first engagement portion. A stopper guide configured to stop movement in a direction away from the one engaging portion;
It is arranged so as to be sandwiched between the first plate member and the stopper guide, and is configured to be contractible in the predetermined direction so that a spring constant when the displacement is larger than a spring constant when the displacement is small is larger. A non-linear elastic member,
I have a,
At the time when at least one of the plurality of pawls contacts the tip of the outer peripheral tooth of the claw wheel when the claw wheel rotates in reverse, the spring constant of the nonlinear elastic member is in a small state,
Among the plurality of claws, at the time at least one deeply penetrate the ratchet wheel at the base of the outer peripheral teeth of the ratchet wheel is stopped, switchgear operation, wherein the spring constant of the non-linear elastic member is larger ing mechanism. A first pin attached to the feed lever and extending parallel to the first axis;
A collision avoidance lever configured so that the first pin passes through one end portion and is rotatable about the first pin;
A second pin attached to the stop lever and extending parallel to the input shaft;
The first long plate portion and the second long plate portion are substantially L-shaped plates that extend from the intersection so as to form a predetermined angle with each other. An L-shaped lever configured to extend perpendicularly to the axial direction of the second pin and to be able to rotate around the second pin with the second pin passing through the intersecting portion;
A third pin disposed so as to freely rotate through an end portion of the buffer avoidance lever far from the first pin and an end portion of the second long plate portion;
A spring material for lever pressing that is connected to the L-shaped lever and maintains a balanced state when the L-shaped lever is stopped at a predetermined position;
The second long plate that extends parallel to the input shaft and contacts the first long plate portion when disposed between the first long plate portion and the second long plate portion of the L-shaped lever. A fourth pin configured to be able to be pressed in a direction from the portion toward the first long plate portion,
An operating lever attached to the fourth pin and configured to engage with the closing cam;
The switchgear operating mechanism according to claim 1, comprising:   The switchgear operating mechanism according to claim 1 or 2, wherein a buffer member is disposed between the first plate member and the nonlinear elastic member.   The first plate member has a protrusion formed on a surface engaged with the stop lever, and the protrusion is configured to be engageable with the first engagement part. The switchgear operating mechanism according to any one of claims 1 to 3. The stop lever has two plates, and these plates are arranged while keeping a gap in the axial direction,
The protrusion is configured to be engageable with the gap;
The switchgear operating mechanism according to any one of claims 1 to 4, characterized in that:

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