JPH0648612B2 - Switch operating device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a switch operating device used for operating a switch such as a disconnector or a grounding device.

[Prior Art] As a conventional operation and measurement device for a switch, the one shown in FIGS. 12 to 14 is known. The operating device shown in FIG. 12 has a rotary shaft 1b operated by a manual operation lever 1a.
Is a direct operation type operating device that directly transmits the rotation of the output shaft 1c to the output shaft 1c. In this operating device, the movable part 1e of the switch 1d is moved to the lever 1f by reciprocally rotating the output shaft 1c within an angle range of 180 degrees or less. Through to the closed or open position. A lever 1g is attached to the input shaft 1b, and a pin 1k is engaged with a hole 1i or 1j provided in a frame 1h to prevent the lever 1g from rotating and hold the switch in an open state or a closed state. It is like this.

The operating device shown in FIG. 13 includes an input lever 2b having one end fixed to the input shaft 2a, a bending link 2d having one end pivotally connected to the other end of the input lever 2b by a pin 2c, and one end having an output shaft. An operating device of a toggle link type which is fixed to 2e and has the other end of the bending link 2d which is pivotally connected to the other end of the bending link 2d by a pin 2f. In this operating device, the input lever 2b and the bending link 2d are connected. The pin 2c pivotally connecting the input lever 2b to the left side of the input shaft 2a in the drawing and the dead center position where the pin 2c, the input shaft 2a and the pin 2f are aligned are set as the open position, and the input lever 2b contacts the stopper 2h at this position. The dead center position where the input shaft 2a, the pin 2c, and the pin 2f are aligned on a straight line with the pin 2c on the left side of the input shaft 2a in the drawing is the closed position, and the input lever 2b is moved to the stopper 2i at this position. This Make. When the operating device is held in the open position or the closed position, a lock pin (not shown) is inserted into the lock hole 2j of the input lever 2b, and the lock pin is coupled to the fixed portion.

Further, the operation position in FIG. 14 is a worm type operating device, in which the rotation of the input shaft 3a is transferred to the intermediate shaft 3d orthogonal to the input shaft 3a via the worm 3b and the worm wheel 3c. The rotation of the intermediate shaft 3d is transmitted via the lever 3e, the torsion link 3f and the output lever 3g to the output shaft 3h concentrically arranged with the input shaft on the extension of the axis of the input shaft 3a. In this operating device, the lever 3e
The open position and the closed position are set by abutting the stoppers 3i and 3j.

[Problems to be Solved by the Invention] The conventional operating device shown in FIG. 12 has the following problems.

(A) Since the rotation of the input shaft 1b is transmitted to the output shaft 1c as it is, it is necessary to provide the input necessary for displacing the movable portion 1e of the switch to the closed position or the open position by the operation lever 1a. In this case, the output is limited by the force that a person can easily output and the range of rotation of the lever 1a, and the output torque is limited by the length and the rotation angle of the lever 1a. Therefore, the output is limited, and it is difficult to apply it to a switch with a large operating torque.

(B) In order to increase the output, it is necessary to increase the length of the operating lever, which also widens the range of rotation, which requires a large space around the operating lever and limits the mounting position of the operating device. Occurs.

(C) When the movable part 1e of the switch is provided so as to move in the vertical direction, if the force is removed or the hand is released during the operation, the movable part 1e will move due to its own weight and perform an unintended operation. There is an inconvenience of doing.

(D) If it is forgotten to attach the lock pin 1k, the switch cannot be held in the open or closed state, which is dangerous.

On the other hand, according to the operating device of FIG. 13, the operating force can be amplified and the operation can be performed with a relatively short operating handle. Further, since the dead center of the toggle link is in the open position or the closed position, there is an advantage that the weight of the movable part of the switch hardly affects the link. However, the operating device of FIG. 13 has the following problems.

(A) It is difficult to dispose the input shaft 2a and the output shaft 2e concentrically.

(B) Since the links are widely spread in the lateral direction, the entire operating device becomes large.

(C) When an operation handle is attached to the input shaft 1a for operation, the length of the handle cannot be made too long in consideration of the range of motion of a human arm, and therefore the input torque cannot be made too large.

(D) A large torque is obtained on the output shaft 2e near both dead centers of the toggle link, but a too large torque is generated at the time when the movable contactor comes into contact with the fixed contactor while the switch is operating in the closing direction. It is not possible to obtain a large torque when needed.

(E) Although the toggle link is at the dead point in the closed position or the open position, since the closed state or the open state still depends on the lock pin, the movable part of the switch will be lost if the lock pin is forgotten to be attached. There is a risk of movement and it is dangerous.

In the operating device shown in FIG. 14, by appropriately selecting the twist angles of the teeth of the worm 3b and the worm wheel 3c, the operation from the output shaft 3h side can be suppressed or prevented, and the safety is improved. be able to. However, this operating device has the following problems.

(A) Since the worm 3b and the worm wheel 3c are generally manufactured by a specialized maker by a special order with high processing accuracy, the price is inevitably high.

(B) In order to change the output direction, it is necessary to add a link mechanism using a twisted link 3f, a spherical bearing, a universal joint, or the like, which makes the structure complicated.

(C) Lever 3e when the worm wheel rotates a predetermined angle
Contacts the stoppers 3i, 3j, but in this case, a large amplified force is applied to the shaft of the worm wheel 3c. Therefore, when the input shaft 3a is manually rotated, the lever 3e may be damaged unless it is manually adjusted. There is Therefore lever 3
It is necessary to strengthen e and its mounting portion, which causes a problem that the device becomes large. In order to prevent this, it is possible to use a worm wheel partially lacking teeth, but in this case, since only the ends of the teeth of the worm wheel mesh with the worm in the closed position or the open position, There is a possibility that the force for holding the switch in the closed state or the open state may be insufficient.

An object of the present invention is to have a function of amplifying an operating force to obtain a large output with a small operating force, to enable non-reversible operation to enhance safety, and to be compact in size as a whole. An object of the present invention is to provide a switch operating device.

[Means for Solving the Problems] As shown in FIG. 1 showing an embodiment of the present invention, the present invention provides a threaded rod 20 to which an operating torque is applied, and a threaded rod 20.
A guide member 10, which has guide grooves 12, 12 extending linearly in the axial direction of
Inclined portion or curved portion 16a inclined with respect to the axial direction
A cam barrel 15 that is provided coaxially with the guide member 10 and that has a cam groove 16 that has a feed groove 21 that has a female threaded portion 21a that is screwed into a screw rod 20; Sliding pins 30 and 30 slidably fitted in the groove 12 and the cam groove 16 are provided.

One of the guide member 10 and the cam barrel 15 is fixed so as not to move, and the other of the guide member and the cam barrel is provided with an output take-out portion such as an output shaft or an output lever, and the output take-out portion operates the switch. It is connected to a shaft (a shaft to which an operation force is applied when the switch is opened / closed) directly or via an appropriate connecting mechanism including a lever, a link and the like.

That is, the operating device of the present invention causes relative rotation between the guide member 10 and the cam barrel 15 by rotating the screw rod, and one of the guide member 10 and the cam barrel 15 is moved. It is fixed so as not to operate, and the other rotation is transmitted to the operation shaft of the switch to operate the switch. The place where the guide member 10 is fixed can be appropriately selected on a case-by-case basis as in the case where the member on the fixed side is fixed in the conventional operating device. For example, when the switch operating device according to the present invention is housed in a dedicated cabinet,
One of the guide member 10 and the cam barrel 15 is fixed to the cabinet. Further, when the switch operating device according to the present invention is incorporated in the operating device box of the gas insulated switching device, one of the guide member 10 and the cam barrel 15 is fixed to the operating device box.

In the above configuration, the cam barrel 15 and the guide member may be provided coaxially with each other, and it is arbitrary whether the cam barrel is placed inside the guide member or the guide member is placed inside the cam barrel. is there.

[Operation] In the above configuration, when the screw rod 20 is rotated and the screw rod rotates with respect to the feed piece 21, the feed piece 2
1 moves along the axial direction of the screw rod. Accordingly, the sliding pins 30, 30 slide along the guide groove 12 and the cam groove 16, so that the guide pin and the cam barrel which are not fixed rotate around the screw rod 20.

In this case, the rotational force applied to the screw rod is the female screw portion 21a.
It is amplified when it is decelerated through and transmitted to the feed piece. If the inclination of the inclined portion or the curved portion of the cam groove is appropriately set, the input can be amplified even when the sliding pin pushes the inclined portion or the curved portion of the cam groove to rotate the cam barrel. As described above, in the operating device of the present invention, the input is amplified and transmitted to the output, so that a large load can be driven with a small input. Therefore, when the operating handle is attached to the input shaft in the case of manual operation, a small one can be used as the operating handle, and there is no restriction on the mounting position of the operating device or the arrangement of peripheral devices. In this case, the amplification degree of the operating force can be adjusted by appropriately setting the reduction ratio between the screw rod and the female screw portion of the feed piece and the shape of the cam groove.

Further, since the screw rod, the feed piece, the guide member, and the cam barrel are coaxially arranged, the mechanism does not spread in the lateral direction.
Therefore, the operating device can be made compact.

Furthermore, by appropriately setting the helix angles of the threads of the male screw portion of the screw rod and the female screw portion of the feed piece, a force is applied from the load side to the guide member or the cam barrel to move the feed piece in the axial direction. Even if a driving force is applied, the screw rod cannot rotate, so that a complete non-reciprocal operation can be performed and safety can be improved.

Embodiments Embodiments of the present invention will be described below with reference to the accompanying drawings.

(A) First Embodiment FIGS. 1 to 4 show a first embodiment of the present invention. In these drawings, 10 is a guide member, which is arranged in the axial direction of the apparatus. Side plate part 1 extending in parallel
0a, 10a and a bearing frame portion 10b provided so as to connect one ends of the side plate portions 10a, 10a to each other, the side plate portions 10a, 10a.
The bearing plate 11 is arranged across the other ends of the
Are attached to the end faces of the side plate portions 10a, 10a with screws 13. In the side plate portions 10a, 10a of the guide member 10, the longitudinal direction of the side plate portions 10a, 10a (the axial direction of the device)
The guide grooves 12, 12 extending in parallel with are provided.

Inside the guide member 10, a bottomed cylindrical cam cylinder 15 is arranged concentrically with the guide member 10. A pair of cam grooves 16 and 16 are provided at symmetrical positions on the peripheral wall portion of the cam cylinder 15 with an angular interval of 180 degrees, and each cam groove 16 has an axial direction of the cam cylinder 15 as shown in FIG. With respect to the inclined portion 16a, and the shaft parallel portions 16b, 1 extending continuously in the direction parallel to the axis of the cam barrel 15 from both ends of the inclined portion 16a.
It consists of 6c. A cylindrical shaft portion 17 having a diameter smaller than that of the cam barrel is projected on the bottom wall of the cam barrel 15, and an output shaft 18 is integrally provided at an end of the shaft portion 17. Cam barrel 1
5, the shaft portion 17 and the output shaft 18 are provided concentrically with each other, and the shaft portion 17 is the bearing frame portion 10b of the guide member 10.
It is rotatably supported via a sleeve-shaped bearing 19 in a bearing hole 10c provided in the. Therefore, the output shaft 18 projects from the connecting portion 10b of the guide member 10 to the rear side of the operating device, and the end portion of the output shaft 18 is an operating shaft of a switch (not shown) or a lever for transmitting operating force to the operating shaft. Are formed into an appropriate shape, for example, a prismatic shape, so that they can be coupled.

The open end of the cam barrel 15 is rotatably fitted to and supported by the outer periphery of the annular protrusion 11a provided on the bearing plate 11 directly or via a bearing (not shown), and the cam barrel 15 and the guide member. The elements 10 can rotate relative to each other about their central axes while maintaining a concentric positional relationship with each other.

A screw rod 20 and a feed piece 2 are arranged inside the cam barrel 15. One end 20a of the screw rod 20 is rotatably supported on the inner circumference of the cylindrical shaft portion 17 of the cam barrel 15 via a sleeve-shaped bearing 22. An input shaft 25 is integrally provided at the other end of the screw rod 20, and the input shaft 25 is rotatably supported in a bearing hole 23 provided in the shaft core portion of the bearing plate 11 via a sleeve bearing 24. ing.

A flange is provided on the input shaft side end of the bearing 19 bearing the shaft portion 17 of the cam barrel 15, and the end surface of the flange serves as a first contact surface A for contacting the feed piece 21. .
The vicinity of the screw rod side end of the input shaft 25 is formed to have a larger diameter than the screw rod 20, and the end face of the input shaft 25 on the screw rod 20 side is a second contact surface for contacting the feed piece 21. It is B.

The feed piece 21 is formed in a substantially columnar shape, and has a female screw portion 21a which is screwed to the male screw portion of the outer periphery of the screw rod 20 at its shaft center portion.
And 180 degrees in the circumferential direction of the outer circumference of the feed piece.
Sliding pins 30, 30 protruding in the radial direction from the feed piece are attached at symmetrical positions apart from each other. Rollers 31 and 32 are attached to the respective sliding pins. As shown in FIG. 2, the sliding pins 30 and 30 are respectively provided in the cam grooves 16 and 16 of the cam barrel 15 and the guide grooves 12 and 1 of the guide member 10.
It is slidably fitted to the roller 2 via rollers 31, 31 and 32, 32.

The input shaft 25 projects from the bearing plate 11 to the front side of the operating device, and the end of the input shaft 25 has a manually operated handle 35.
It is formed in an appropriate shape, for example, a prismatic shape, so that the output shaft of a rotation drive mechanism (not shown) that uses a motor as a drive source can be connected.

In this embodiment, the guide member 10 is housed in and secured to a suitable cabinet 36,
The input shaft 25 is led out inside an opening 37 provided on the front side of the cabinet 36, and the output shaft 18 is led out from the back side of the cabinet 36.

In the above embodiment, when the input shaft 25 is rotated in one direction to close the switch, the screw rod 20 rotates, so that the feed piece 21 is prevented from rotating due to the engagement of the roller 32 and the guide groove 12. Moves along the axial direction of the screw rod 20 in the right direction in FIG. 1, for example. Roller 3 at this time
1 pushes the inclined portion 16a of the cam groove 16 to rotate the cam barrel 15 in the clockwise direction when viewed from the front side (the left side in FIG. 1), the output shaft 18 also rotates in the clockwise direction, which causes the output shaft 18 to rotate. The switch, whose operating shaft is connected to the shaft directly or via an appropriate connecting mechanism, is operated in the closing direction. In FIG. 1, when the roller 31 reaches the right end portion of the cam groove 16, the feed piece 21 comes into pressure contact with the first contact surface A and stops. In this state, the closing operation of the switch is completed.

When the input shaft is rotated in the opposite direction when the switch is opened, the feed piece moves leftward in FIG. 1 by the operation opposite to the above, and the cam barrel 15 rotates counterclockwise when viewed from the front side. . Therefore, the output shaft 18 also rotates in the counterclockwise direction, whereby the switch connected to the output shaft 18 is operated in the opening direction. In FIG. 1, when the roller 31 reaches the left end of the cam groove 16, the feed piece 21 comes into pressure contact with the second contact surface B and stops. In this state, the opening operation of the switch is completed.

With the configuration as in the above embodiment, the input applied to the threaded rod is amplified when the rotation of the threaded rod 20 is decelerated by the engagement of the male threaded portion of the threaded rod 20 and the female threaded portion of the feed piece. . Further, if the inclination of the inclined portion 16a of the cam groove is appropriately set so that the ratio of the displacement amount of the cam barrel 15 to the displacement amount of the feed piece 21 is 1 or less, the roller 31 causes the cam groove 16 to move.
The input is further amplified when the cam barrel is rotated by pushing the inclined portion 16a of the. Thus, in the present invention, the input given to the threaded rod is amplified and transmitted to the output shaft 18, so that a large load can be driven with a small input,
In the case of manual operation, the operation is facilitated, and in the case of mechanical operation such as electric operation, it is possible to use a small and low-power drive source. In this case, by appropriately setting the pitch angle of the screw of the threaded rod and the length of the threaded rod, it is possible to cope with all loads having different required torques.

As described above, since the input applied to the input shaft 25 may be small, the operation handle 3 to be attached when performing the manual operation.
5 can be small. Therefore, the required space around the handle can be reduced, and restrictions on the mounting position of the operating device and the arrangement of peripheral devices can be reduced.

Further, since the feed piece is advanced by the screw and the output shaft is rotated through the cam groove, by completely selecting the helix angle of the screw of the threaded rod 20, it is possible to perform a completely inoperable operation. . Therefore, if the handle is released during operation, the movable part will move in the direction opposite to the operating direction due to the weight of the movable part of the switch or other external force, and the movable part of the switch in the open or closed state will not move. It is possible to prevent a dangerous state in which the switch moves to the closed state or the open state due to its own weight to move, and safety can be improved.

Although the operating device of the present invention is capable of irreversible operation as described above, for safety, it is preferable to provide a locking means such as a lock pin for locking the switch in the closed state or the open state. As this locking means, for example,
A lock pin or the like that engages with a part of the operation handle 35 and locks the operation handle 35 at the open position or the closed position can be used.

In the apparatus of the above embodiment, the screw rod, the feed piece, the guide member, and the cam barrel are arranged coaxially, and the input shaft and the output shaft are arranged coaxially. Therefore, the link mechanism is used. Unlike the case, the mechanism does not spread laterally and the structure does not become complicated, and the operating device can be made compact.

Furthermore, since no expensive member such as a worm or a worm wheel is used, the cost can be reduced.

Further, when the coaxial structure is used as described above, since the bearing portion of the screw rod can be provided inside the cam barrel, it is not necessary to provide a fixed bearing specially, and the structure of the fixed frame can be simplified.

In the above embodiment, the feed piece 21 is pressed against the contact surface A or B at each end of the stroke. According to this structure, the feed pieces can be received by the surfaces in the axial direction at both end portions of the stroke, so that excessive bending stress can be prevented from occurring in the feed piece, the screw rod, and the like. Further, at each terminal end of the stroke, the pressure contact of the feed piece 21 to the contact surface A or B is performed before the force is increased by the inclined portion 16a of the cam groove 16, so that the force is finally increased during the pressure contact. It is possible to prevent the applied large force from acting on the feed piece and the pressure contact surface. Therefore, it is not necessary to enlarge the feed piece and the screw rod in order to increase the strength, and the device can be made compact.

As in the above embodiment, the guide grooves 12, 12 and the cam groove 1
When 6 and 16 are provided at symmetrical positions, the operating force and the load force applied to the sliding pins 30 and 30 can be balanced on the left and right of the screw rod, and the feed piece 21 is always in a concentric position with respect to the screw rod 20. It can be displaced while maintaining the relationship. Therefore, it is possible to prevent bending stress from occurring in the threaded rod, and it is possible to reduce the diameter of the threaded rod accordingly.

Further, since no eccentric force acts on the feed piece, it is possible to prevent the lateral resistance force from being generated, and it is possible to perform a light motion.

When the shaft parallel portions 16b and 16c are provided at both ends of the cam groove 16 as in the above-described embodiment, the rotation of the cam cylinder is stopped after the sliding pins 30 reach the parallel portions. .
Therefore, the rotation of the cam barrel can be stopped in a certain section immediately after the start of the rotation operation of the input shaft and in a certain section immediately before the end of the rotation. The sliding pins 30 and 30 are connected to the cam groove 16
Since the load force applied to the output shaft 18 is received by the guide grooves 12 and 12 and the shaft parallel portions 16b and 16c of the cam groove 16 in the sections within the shaft parallel portions 16b and 16c, the force is applied to the screw rod. Therefore, the position of the output shaft can be maintained stably and completely. In addition, since the rotation range of the output shaft exactly coincides with the angular difference between the shaft parallel portions 16b and 16c at both ends of the cam groove 16 around the shaft center, the error can be made small and a precise operating device can be provided. Obtainable.

(B) Second Embodiment FIG. 5 shows a second embodiment of the present invention. In this embodiment, the effective length of the portion of the threaded rod 20 where the male screw portion 20A is provided is determined by the cam length. Idling portions 20 </ b> B and 20 </ b> B having no thread groove are provided at both ends of the threaded rod 20 in accordance with the axial length of the inclined portion of the groove 16. A push ring 40 is slidably fitted on the outer periphery of the end portion of the input shaft 25 on the screw rod side. The push ring 40 has a step portion 40a on the inner periphery thereof, and the step portion 40a abuts on a flange portion 25a formed at the end portion of the input shaft 25 on the screw rod side to move the push ring 40 to the screw rod side. Is regulated. Push ring 40
Is urged toward the output shaft 18 by the spring 41, and the feed piece 2
When 1 is displaced to the idling portion 20B on the left side of FIG. 5, the push ring 40 moves the feed piece 21 in the right direction (the direction in which the female thread portion of the feed piece 21 is screwed into the male thread portion of the screw rod 20). It is supposed to be urged to.

In addition, a push ring 42 is provided on the outer periphery of the output shaft side end of the screw rod 20.
Is slidably fitted, and the input shaft 2 of the push ring 42 is
The displacement to the 5 side is restricted by a step portion 20d provided near the output shaft side end portion of the screw rod 20. Push ring 42
Is urged toward the input shaft side by the spring 43, and when the female screw portion of the feed piece 21 is displaced to a position where it fits into the idling portion 20B on the right side in FIG. The top 21 is biased in the left direction (the direction in which the female thread portion of the feed piece 21 is about to be screwed into the male thread portion of the screw rod 20). Further, in this example, the cam barrel 15
However, it is supported in a cantilever manner by fitting the shaft portion 17 on the bottom side thereof and the bearing 19. Other configurations are shown in FIGS.
This is similar to the embodiment shown in the figure.

In the embodiment shown in FIG. 5, when the sliding pins 30, 30 are disengaged from the inclined portion 16a of the cam groove 16, the female screw portion 21a fits into the idle portions 20B, 20B and the screw rod 20 idles. If the screw rod is allowed to idle during the final stroke of the rotation of the input shaft in this way, there will be no part where the feed piece abuts during the final stroke, so excessive force will be applied to the feed piece and the end of the input shaft. It does not hang. In this case, since the strength design of each part of the mechanism only needs to consider the maximum load force, the mechanical strength of each part can be suppressed to the necessary minimum, and the size and weight of the device can be reduced. It can be anything.

In the embodiment of FIG. 5, when the female thread portion 21a of the feed piece is separated from the male thread portion 20A of the threaded rod, the feed piece 21 is pushed toward the male threaded portion 20A of the thread rod by the push ring 40 or 42. , Female thread portion 2 of feed piece 21
The re-threading between the screw la and the male screw portion 20A of the screw rod can be easily and smoothly performed.

(C) Third Embodiment FIGS. 6 and 7 show a third embodiment of the present invention. In this example, the cam barrel 15 is arranged on the outer side, and the cam barrel 15 is placed on the inner side. A guide member 10 is arranged. Cam grooves 16, 16 are provided at symmetrical positions on the peripheral wall 15A of the cam barrel 15, and one end and the other end of the cam barrel 15 in the axial direction are closed by a bottom wall 15B and an end plate 15C, respectively.
A mounting hole 15E is provided in a mounting leg portion 15D protrudingly provided on the outer circumference of the end plate 15C, and the mounting leg portion 15D is bolted to a fixed portion fixed to a cabinet or the like that houses the operating device. The cam barrel 15 is fixed so as not to move. The guide member 10 is formed in a cylindrical shape with a bottom, and guide grooves 12, 12 are formed at symmetrical positions on its peripheral wall portion. The shaft portion 10A provided on the bottom portion of the guide member is rotatably supported via the bearing 51 in the bearing hole 50 provided in the end plate 15C of the cam barrel, and the output shaft 18 is integrated with the end portion of the shaft portion 10A. It is provided in. Furthermore, the outer circumference of the opening end of the guide member 10 is the cam cylinder 1.
The guide member 10 is rotatably fitted to the inner circumference of the bearing 52 fitted to the inner circumference of the cam 5, so that the guide member 10 can freely rotate in the cam barrel 15. One end of the threaded rod 20 is supported in a recess provided in the inner surface of the bottom of the guide member 10 via a bearing 53, and the other end is in a bearing hole 54 provided in the bottom wall 15B of the cam barrel 15 via a bearing 55. Supported. An input shaft 25 is integrally provided at the other end of the screw rod 20, and the input shaft 25 is led out of the cam barrel 15. Screw rod 2
The female screw portion 21a of the feed piece 21 is screwed to
Sliding pin 3 fixed to the feed piece 21 as shown
Numerals 0 and 30 are fitted into the cam groove 16 and the guide groove 12 via the rollers 31 and 32, respectively.

In this embodiment, when the screw rod 20 rotates, the feed piece 21
, But is displaced in the axial direction while being prevented from rotating by the fixed cam groove 16. When the feed piece rotates, the sliding pins 30, 30 push the guide grooves 12, 12 in the circumferential direction, so that the guide member 10 rotates around the screw rod 20.
This rotation is transmitted to a switch (not shown) via the output shaft 18.

With the above-described configuration, the diameter of the cam barrel 15 can be increased, so that the working of the cam groove can be facilitated. In particular, since the curved surface of the cam groove has a large curvature, it is easy to improve the processing accuracy. In addition, the play that occurs in the fitting portion between the cam groove and the roller appears as backlash during operation,
This causes the accuracy of the operating angle to decrease, but if the cam groove is placed outside as described above, the distance from the center of rotation to the cam groove can be increased. Compared with the above, it is possible to reduce the rate at which the play of the fitting portion between the cam groove and the roller appears as an angular error, and it is possible to obtain a more accurate operating device.

Also in this embodiment, it is needless to say that the idling portion having no thread groove can be provided at both ends of the threaded rod.

(D) Fourth Embodiment FIGS. 8 and 9 show a fourth embodiment of the present invention. In this embodiment, the cam cylinder 15 is formed in a cylindrical shape and its peripheral wall portion is symmetrical. Cam grooves 16, 16 are formed at the positions. An output lever 60 is fixed to the outer periphery of one end of the cam barrel 15, and a pin fitting hole 61 for fitting a pin for pivotally attaching a link connected to the operation shaft of the switch to the output lever.
Are formed.

The guide member 10 is composed of a cylindrical body 65 and end plates 66 and 67 that close both ends of the cylindrical body, and guide grooves 12 and 12 are formed at symmetrical positions on the peripheral wall of the cylindrical body. The cam barrel 15 is arranged outside the guide member 10 concentrically with the guide member, and the cam barrel 15 rotates with respect to the guide member 10 by the bearings 68 and 69 fitted to the outer circumferences of both ends of the guide member 10. It is supported freely.

One end of the screw rod 20 is supported in a recess 67a provided in the center of the end plate 67 via a bearing 70, and the other end is supported in a bearing hole 66a provided in the center of the end plate 66 via a bearing 71. Has been done. An input shaft 25 is integrally provided at the other end of the screw rod 20, and the input shaft 25 is led to the outside from the end plate 66 side.

Further, a mounting leg portion 72 is provided on the outer peripheral portion of the end plate 67 that closes the end portion of the guide member 10, and a bolt passed through a mounting hole 73 provided in the leg portion 72 is screwed into the fixed frame F. Thus, the guide member 10 is fixed.

The point where the female screw portion 21a of the feed piece 21 is screwed onto the screw rod 20, and the sliding pins 30 and 30 fixed to the feed piece.
Is fitted in the cam groove 16 and the guide groove 12 via the rollers 31 and 32, which is the same as the above-mentioned embodiment.

In this embodiment, the output lever 60 is connected to the operating shaft of the switch through a connecting mechanism including a link. When the feed piece 21 is displaced by the rotation of the screw rod 20, the cam barrel 15
Rotates, and this rotation is transmitted to the operation shaft of the switch via the output lever 60 and the coupling mechanism.

In the above-described embodiment, the end plate 67 is penetrated to the threaded rod 20.
By extending the end of the input shaft 25 from the end plate 67 side
Can be derived so that an input is given to the operating device from the right end portion side in FIG. Output lever 6
It is also possible to provide 0 on other parts of the cam barrel 15, such as the left end of FIG.

In the above embodiment, as shown in FIG.
The output shaft 18 may be provided at the center of the bottom wall portion 75 as a structure in which one end of the bottom wall portion 75 is closed.

As described above, in this embodiment, the mounting position of the output lever can be set arbitrarily. Further, a plurality of output levers can be attached to the cam barrel, and the output shaft 18 can be provided. Therefore, it is possible to increase the degree of freedom in how to take out the output and widen the applicable range of the operating device, and it is possible to act the common operating device on various switches.

(E) Fifth Embodiment FIG. 11 shows an embodiment in which the operating device of the present invention is driven by a motor. In FIG. 11, the main part of the operating device is the same as the embodiment of FIG. It is similarly configured. In this embodiment, a gear 80 is attached to the input shaft 25, and a pinion 81 is meshed with this gear. Pinion 8
1, one end of a clutch 82 is attached to the clutch 8.
The other end of 2 is coupled to the output shaft 85 of the motor 84 via the pin 83.

According to this structure, the operating device can be driven by the motor 84, and a large rotational force can be transmitted to the output shaft 18 by using the small-sized and small-output motor 84. Alternatively, the manual operation can be performed with the operation handle 35 attached and the clutch 82 disengaged.

It is needless to say that the motor can be used to drive the input shaft in other embodiments as well.

When the input shaft is driven by a motor, as the power transmission mechanism for transmitting the output of the motor to the input shaft 25, a combination of a sprocket and a chain or a combination of a pulley and a belt can be adopted in addition to the gear. When the power transmission mechanism is configured using gears, the direction of the motor shaft with respect to the input shaft can be appropriately changed by using a helical gear, a bevel gear, or the like as the gear.

[Advantages of the Invention] As described above, according to the present invention, the screw rod, the cam barrel, and the guide member are coaxially arranged, so that the mechanism does not spread in the lateral direction and the operating device is compact. There is an advantage that can be configured. Also, because the rotation of the input shaft is decelerated and transmitted to the output shaft by screwing the threaded rod and the female thread of the feed piece, the input can be amplified and transmitted to the output shaft, and a large input can be output with a small input. Obtainable.
Further, since the non-reciprocal operation is possible, it is possible to prevent the input shaft from moving due to an external force such as the weight of the movable part of the switch,
There is an advantage that the safety of operation can be improved.

[Brief description of drawings]

1 to 3 are respectively a longitudinal sectional view, a lateral sectional view and a partially exploded perspective view showing a first embodiment of the present invention, and FIG. 4 shows a guide groove used in the same embodiment. FIG. 5 is an explanatory view showing an example of a cam groove, FIG. 5 is a vertical sectional view showing a second embodiment of the present invention, and FIGS. 6 and 7 are vertical cross sections showing a third embodiment of the present invention. A plan view and a transverse sectional view, FIGS. 8 and 9 are a longitudinal sectional view and a transverse sectional view, respectively, showing a fourth embodiment of the present invention, and FIG. 10 is a partial modification of the same embodiment. 11 is a vertical sectional view showing a fifth embodiment of the present invention, and FIGS. 12 to 14 are perspective views showing different conventional examples. 10 ... Guide member, 12 ... Guide groove, 15 ... Cam tube, 16 ... Cam groove, 16a ... Inclined portion, 18 ... Output shaft, 20 ... Screw rod, 21 ... Feeding piece, 25 ... ... Input shaft, 30 ... Sliding pins, 31, 32 ... Rollers.

Claims (7)

[Claims] 1. A screw rod to which an operating torque is applied, a guide member coaxially arranged with the screw rod, the guide member having a guide groove extending linearly in the axial direction of the screw rod; A cam barrel provided with a cam groove having an inclined portion or a curved portion which is inclined with respect to the guide member, a cam barrel coaxially arranged with the guide member, a feed piece having a female screw portion screwed into the screw rod, and the feed piece A sliding pin fixed to the guide groove and the cam groove so as to be slidably fitted in the guide groove and the cam groove, wherein one of the guide member and the cam cylinder is fixed so as not to move, and the other of the guide member and the cam cylinder is fixed. An output unit such as an output shaft and an output lever is provided in the switch, and the output extraction unit is connected to an operation shaft of the switch. 2. The switch operating device according to claim 1, wherein the guide member is arranged inside the cam cylinder. 3. The switch operating device according to claim 1, wherein the guide member is arranged outside the cam barrel. 4. The pair of guide grooves and the pair of cam grooves are provided in pairs, respectively, and the pair of the pair of guide grooves and the pair of cam grooves are respectively provided at an angular interval of 180 degrees. The operating device for a switch according to any one of 3 above. 5. The switch operating device according to any one of claims 1 to 4, wherein the screw rod is supported by a bearing provided inside the cam barrel. 6. At least one end of the cam groove has an axis parallel portion extending parallel to the central axis of the threaded rod, according to any one of claims 1 to 5. An operating device for a switch according to one. 7. The switch according to claim 6, wherein the screw rod has an idle portion having no screw groove at a portion corresponding to an axially parallel portion of the cam groove. Operating device.