JPWO2020208676A1 - Electromagnetic operation device - Google Patents

Abstract

The manual operation unit (20) for manually operating the plurality of switches (200) at once is rotatably held by the frame (11) of the electromagnetic operation device main body (10) for operating the switch (200). A handle portion (7) having a shaft (5) arranged so as to be hung over an area in which a plurality of electromagnetic operation device main body portions (10) are arranged, and a handle portion (9) for rotating the shaft (5). ), A plurality of cams (6) and shafts (5) separately mounted on the shaft (5) corresponding to each of the electromagnetic operating device main body (10) and the movable electromagnetic operating device main body (10). It is rotatably supported by a rotating shaft (3a) provided between the shaft (1) and supported by the frame (11), one end of which is a cam (6) and the other end of which is a movable shaft (1). A plurality of movable shafts (1) are provided with a link member (3) in contact with the cam (6), and the shaft (5) is rotated according to the opening operation of the handle portion (7), via the cam (6) and the link member (3). ) Was configured to move at the same time.

Description

The present application relates to, for example, an electromagnetic operating device for operating a switch.

As a switch, there is a vacuum circuit breaker in which a movable contact and a fixed contact are built in a vacuum container, and the opening / closing operation is performed by moving the movable contact. The electromagnetic operating device for operating the switch is configured to enable not only electromagnetic operation but also manual operation. When manually opening the pole, for example, the operator drives the lever fixed to the rotating shaft by rotating the rotating shaft, and the lever directly pushes and drives the movable shaft of the electromagnetic operating device. It was. Further, the rotating shaft was configured to be driven by using a tool such as a wrench (see, for example, Patent Document 1).
In addition, as a conventional switchgear, a configuration is disclosed in which a switchgear for three phases is collectively opened and closed, and a handle of another part is attached to the main shaft (rotary shaft) during manual operation. The drive shaft (movable shaft) was directly driven by a lever fixed to the main shaft (see, for example, Patent Document 2).

Japanese Patent No. 5901351 Japanese Patent No. 4668165

The electromagnetic operating device of Patent Document 1 is provided with a mechanical unit for manual operation in pairs with the electromagnetic operating device. Therefore, assuming a configuration in which a switchgear for three phases is provided in one switchgear and an electromagnetic operation device is provided for each of the three phases, manual operation is performed for each phase when performing manual opening operation. There was a temporary phase loss due to the need to perform.

Further, the configurations of Patent Documents 1 and 2 have a structure in which the movable shaft is directly driven by a lever fixed to the rotating shaft, so that the operating torque is sufficient to directly rotate the rotating shaft to which the lever is fixed. There is a problem in operability in that the operating torque increases due to an increase in the number of devices that are manually operated in a batch. In addition, there is a problem in operability in that a handle or the like for manual operation is not provided on the device side.

The present application discloses a technique for solving the above-mentioned problems, and provides an electromagnetic operating device having excellent operability while enabling manual operation of a plurality of switches at once. The purpose is to do.

The electromagnetic operating device disclosed in the present application is an electromagnetic operating device including a manual operating unit that manually opens a plurality of switches at once, and the manual operating unit operates the switches. A shaft that is rotatably held by the frame of the electromagnetic operating device main body and is arranged so as to hang over an area in which the plurality of electromagnetic operating device main bodies are arranged, and a handle that rotates the shaft. A handle portion, a plurality of cams separately mounted on the shaft corresponding to each of the plurality of the electromagnetic operating device main body portions, and provided between the shaft and the movable shaft of each of the electromagnetic operating device main body portions. A link member is rotatably supported by a rotating shaft supported by the frame, one end of which is in contact with the cam and the other end of which is in contact with the movable shaft. Is configured to rotate and move the plurality of movable shafts at the same time via the cam and the link member.

According to the electromagnetic operating device disclosed in the present application, since the cam mounted on the shaft is interlocked with the link member to move the movable shaft, one member for directly moving the movable shaft to the shaft. The design margin is higher because the number of parts linked to the shaft is larger than that of the one with the above mounted, and it is easy to adjust the operation torque required for manual operation, and the handle part fixed to the shaft can be used. By manually operating, a plurality of movable axes can be operated at once, and operability can be improved.

It is a partial cross-sectional side view which shows the outline of the electromagnetic operation apparatus which concerns on Embodiment 1. FIG. It is an enlarged side sectional view of the electromagnetic operation device. It is a front view of the electromagnetic operation apparatus which concerns on Embodiment 1. FIG. It is an enlarged plan view of the main part of a link member. It is a perspective view of the electromagnetic operation apparatus which concerns on Embodiment 1. FIG. It is a side view which shows a cam and a link member. It is a front view of the electromagnetic operation apparatus which concerns on Embodiment 2. FIG. It is a side sectional view along the line BB of FIG.

Embodiment 1.
The electromagnetic operating device 100 according to the first embodiment of the present application will be described with reference to FIGS. 1 to 6.
FIG. 1 is a partial cross-sectional side view showing the electromagnetic operating device 100 according to the first embodiment, and is a diagram showing a connection relationship with a switch 200 that is opened and closed by the electromagnetic operating device 100. Here, the switchgear 200 is, for example, a vacuum circuit breaker, and the switchgear is composed of the electromagnetic operating device 100 and the switchgear 200.
The electromagnetic operation device 100 includes an electromagnetic operation device main body 10 that electromagnetically operates the switch 200 when a power source is available, and a manual operation unit for a worker to manually operate the switch 200 in an emergency such as when a power source is lost. It has 20 and. In FIG. 1, the electromagnetic operating device main body 10 is arranged in the center, the switch 200 is arranged on the right side, and the manual operating unit 20 is arranged on the left side, and the movable shaft 1 extends in the left-right direction so as to penetrate them. Has been done. The switches 200 for three phases are arranged side by side on the depth side of FIG. 1, and the leftmost surface portion of FIG. 1 is the front surface of the electromagnetic operating device 100.

The switch 200 is configured such that the movable contact 201 and the fixed contact 202 are butted along the axial direction in the vacuum container, and the movable shaft 1 connected to the movable contact 201 is the main body of the electromagnetic operating device. The opening and closing is controlled by being operated by the unit 10 or the manual operation unit 20. Note that in FIG. 1, the description of the configuration of the insulating portion located between the movable contact 201 and the electromagnetic operating device main body portion 10 and the conductive portion connected to the two contacts is omitted.

FIG. 2 is an enlarged cross-sectional view of the electromagnetic operating device 100, and is a detailed configuration of an electromagnetic operating device main body 10 for driving the movable shaft 1 by electromagnetic operation and a manual operating unit 20 for manually driving the movable shaft 1. Is illustrated. FIG. 2 corresponds to a side sectional view taken along the line AA of FIG. 3, which will be described later.
The electromagnetic operation device main body 10 is a mechanism that opens and closes the switch 200 during normal operation, and the movable shaft 1 is inside two opposing plate-shaped frames 11 supported by the frame support 11b. It is provided with a movable iron core 12 fixed to and configured to move in the axial direction by an opening / closing operation, and a fixed iron core 13 fixed to the frame 11 and provided so as to face the movable iron core 12. The movable iron core 12 is operated by the energized state of the coil 14, and when transitioning from the closed pole state to the open pole state, the movable iron core 12 moves in the opening direction (left side) indicated by the arrow in FIG. 12 separates from the fixed iron core 13. When the movable core 12 is separated from the fixed core 13 and a gap is formed between the two cores, the movable shaft 1 is moved by the spring member 30 provided at the end (left end) of the movable shaft 1 on the opposite side of the switch 200. It is moved in the opening direction (pulling direction), and the movable contact 201 of the switch 200 is separated from the fixed contact 202 to be in the opening state. A spring holding plate 31 for holding the spring member 30 is provided at the end of the movable shaft 1.

The manual operation unit 20 is a mechanical unit for switching the switch 200 from the closed pole state to the open pole state by the manual operation of the worker. As shown in FIG. 2, the manual operation unit 20 is provided at one end of the movable shaft 1 on which the spring member 30 is arranged, that is, at the end on the side not connected to the switch 200. The manual operation unit 20 is supported by a link member 3 that pushes the flange 2 fixed to the outer peripheral portion of the movable shaft 1 in the axial direction, a rotating shaft 3a that rotatably supports the link member 3, and a frame 11. A shaft support portion 4, a shaft 5 rotatably supported by the shaft support portion 4, a cam 6 fixed to the shaft 5 and in contact with the link member 3, and an arm portion 8 extending radially outward from the shaft 5. It is mainly composed of a handle portion 7 including a handle portion 9 attached to the radial outer end portion of the arm portion 8.

Further, the shaft 5 is arranged so as to span the area where the three-phase electromagnetic operating device main body 10 is arranged, and the three cams correspond to each of the three-phase electromagnetic operating device main body 10. It is separately attached to one shaft 5.
Further, the link member 3 is provided between the shaft 5 and the movable shaft 1 of each electromagnetic operating device main body 10, and is rotatably supported by the rotating shaft 3a supported by the frame 11, and one end of the link member 3. The portion is in contact with the cam 6, and the other end is in contact with the flange 2 fixed so as to be integrated with the movable shaft 1. The link member 3 is a member that transmits the operation of the cam 6, and is formed in a dimension corresponding to the distance between the shaft 5 and the movable shaft 1. In the example of FIG. 2, the link member 3 has a shape in which the planar shape is curved in a bow shape and the end portion protrudes toward the flange 2 and the cam 6, and has a flat joint surface in contact with the cam 6. It is shown.
The electromagnetic operating device 100 of the present application manually rotates the shaft 5 in accordance with the opening operation of the handle portion 7 and simultaneously moves the movable shafts 1 for three phases via the cam 6 and the link member 3. It is configured to open the poles in a batch of three phases.

FIG. 3 is a front view of the electromagnetic operating device 100 in the closed pole state when observed from the front side. As shown in FIG. 3, three-phase electromagnetic operating device main bodies 10 are arranged in a row along the axial direction (horizontal direction) of the shaft 5, and movable shafts 1 separately provided on the electromagnetic operating device main body 10 are provided. Are arranged in parallel with each other separated from each other, and the movable shaft 1 and the shaft 5 are arranged apart from each other so as to secure a certain distance for rotating the link member 3. In FIG. 3, the three movable shafts 1 extend in the depth direction, and one linear handle portion 9 of the handle portion 7 of the manual operation portion 20 is parallel to the shaft 5 on the lower side of the movable shaft 1. It is being held.
The handle portion 9 of the manual operation portion 20 is exposed on the front side of the flat plate-shaped frame 11 so as to facilitate the handle operation by the operator, and protrudes toward the front side of the operator when the pole is closed. The layout is easy to operate.

For example, when the switch 200 is closed, the handle portion 9 is held in a state of protruding toward the front side of the shaft 5, so that the arm portion 8 extending in the radial direction of the shaft 5 extends in the horizontal direction. In this state, when the operating range by the opening operation is 90 degrees at the rotation angle of the shaft 5, when the opening operation is completed, the handle portion 9 is below the shaft 5 as shown by the broken line in FIG. It is arranged on the side, and the arm portion 8 is in a state of extending downward from the shaft 5.

It is also possible to provide a stopper or the like (not shown) having a function of holding the position of the handle portion 7 so that the handle portion 7 does not move downward due to its own weight.
Further, the handle portion 7 is adjusted to a weight that can suppress rotation due to its own weight. In the closed pole state, the movable shaft 1 is pushed toward the switch 200 by the electromagnetic operating device main body 10, so that the handle 7 does not naturally rotate downward.

Further, as shown in FIG. 3, the rotating shaft 3a for rotatably holding the link member 3 is located between the two frame base portions 11a fixed to the surface portion of the frame 11 with the movable shaft 1 interposed therebetween. It has been handed over. The direction in which the axis of the rotating shaft 3a extends is orthogonal to the direction in which the axis of the movable shaft 1 extends, and the distance between the rotating shaft 3a and the movable shaft 1 is adjusted according to the dimensions of the link member 3.

FIG. 4 is an enlarged plan view of a main part of the link member 3, exemplifying the plan shape of the link tip portion 3b of the link member 3 which is an engaging portion with the movable shaft 1. In the example of FIG. 4, a state in which two link tip portions 3b are arranged in parallel with the movable shaft 1 interposed therebetween is shown at an end portion of the link member 3 on the side for driving the movable shaft 1. The end of the link tip 3b comes into contact with the end face of the flange 2 fixed to the movable shaft 1 on the switch 200 side, and rotates around the rotation shaft 3a as a fulcrum with the opening operation to move the end face of the flange 2. It is configured to push to the opposite side of the switch 200.

FIG. 5 is a perspective view of the electromagnetic operating device 100 when the pole is closed, in which the handle portion 9 of the handle portion 7 is exposed and arranged on the front side, and both ends of the shaft 5 and the handle portion 9 are arranged. An arm portion 8 is provided so as to connect the portions. Since the handle portion 7 is provided so as to be integrated with the electromagnetic operation device 100, it is not necessary to attach a handle of another member before the manual operation, and the manual operation can be started immediately in an emergency.
Further, since a square frame body is formed in which both ends of the shaft 5 and the handle portion 9 are connected by the arm portion 8, the rotational state of the shaft 5 is improved as compared with the case where the driving force is applied only to one end of the shaft 5. Can be stabilized. Further, since the handle portion 9 is provided according to the width of the three-phase device to which the shaft 5 is hung, the worker can naturally grasp the handle portion 9 with both hands during the closing operation. A sufficient length can be secured. Then, at the start of opening the pole, the worker grasps the handle portion 9 and applies a downward force to start rotating the handle portion 9, so that the worker can operate while applying his / her weight. , It is easy to secure the operation torque required for manual operation of all three phases.
As described above, the electromagnetic operation device 100 of the present application has better operability than the conventional one in performing the manual operation by the manual operation unit 20.

Next, the operation of the cam 6 and the link member 3 during the opening operation will be described with reference to FIG. FIG. 6 is an enlarged side view showing a state in which the cam 6 and the link member 3 are interlocked with each other.
In this example, the cam 6 is composed of an egg-shaped plate cam with one top. The base circle of the cam 6 is arranged coaxially with the shaft 5, and the top portion 6a protruding from the base circle by a predetermined lift amount is attached to the shaft 5 so as to face downward when the pole is closed. When the shaft 5 is rotated 90 degrees counterclockwise by the opening operation, the cam 6 shown by the broken line in FIG. 6 rotates to a position where the top 6a faces to the right, and the top 6a is an axial switch of the movable shaft 1. It is in a state of protruding to the 200 side. Along with this, the link member 3 rotates counterclockwise with the rotation shaft 3a as the center (fulcrum), and one end (lower end) of the link member 3 is pushed by the top portion 6a toward the switch 200 side (right side) in the axial direction. The other end (upper end) of the link member 3 is pushed to the opposite side (left side) of the movable shaft 1 from the switch 200 in the axial direction to drive the movable shaft 1 in the opening direction.

Since the cams 6 mounted on the shaft 5 are separately provided for the three switches 200, the three cams 6 are mounted on the shaft 5 so as to correspond to the movable shaft 1 and are separated from each other. The three cams 6 have the same shape and are arranged in the same direction.
Further, by setting the distance from the shaft 5 to the top 6a (point of action) of the cam 6 smaller than the distance from the handle 9 (power point) of the handle 7 to the shaft 5 (fulcrum), the lever can be used. According to the principle, it is possible to drive the cam 6 with a smaller operating torque.

Here, the rotating shaft 3a, which is a fulcrum of the link member 3, is arranged between the movable shaft 1 and the shaft 5. The rotating shaft 3a can be provided at the midpoint on the line connecting one end (power point) of the link member 3 in contact with the cam 6 and the other end (action point) of the link member 3 in contact with the flange 2 of the movable shaft 1. However, it is also possible to provide it at a biased position other than the midpoint. For example, in the link member 3, the distance between the force point and the fulcrum (rotating shaft 3a) is adjusted to be larger than the distance between the fulcrum and the point of action, so that the operating torque is smaller due to the principle of leverage. The movable shaft 1 can be moved in the opening direction. On the contrary, by adjusting the distance between the force point and the fulcrum to be smaller than the distance between the fulcrum and the point of action, the movable shaft 1 can be twisted by the opening operation of the movable shaft 1 by the manual operation unit 20. It is possible to move it greatly.

As described above, the link member 3 is a component having a high design margin that allows the shape and arrangement of the link member 3 to be determined according to conditions such as the scale and internal structure of the electromagnetic operating device 100, the shapes of the handle portion 7 and the cam 6. Is. The electromagnetic operating device 100 of the present application provided with the cam 6 and the link member 3 as described above has a configuration in which a member (lever in the prior art) for directly moving the movable shaft 1 is attached to the shaft 5. Since the design margin is higher than that of the above, adjust the shapes of the cam 6 and the link member 3 so that the three-phase batch can be manually operated within the range of the operating torque that can be secured in an emergency. It is possible to improve the operability as compared with the conventional one.

Embodiment 2.
Next, the electromagnetic operating device 100 according to the second embodiment of the present application will be described with reference to FIGS. 7 and 8.
FIG. 7 is a front view of the electromagnetic operating device 100 in the closed pole state observed from the front side. At the position of the right end of the shaft 5, the plunger 40 is fixed to the outer surface of the frame 11, and the plunger 40 is fixed to the plunger 40. A plunger cam 41 is attached to the shaft 5 so as to be in contact with the shaft 5. A side sectional view taken along the line BB of FIG. 7 is shown in FIG.

As shown in FIG. 8, the plunger 40 has a built-in push spring 40a, and when it comes into contact with the plunger cam 41, the push spring 40a is compressed, and at the same time, a contact pressure is applied to the plunger cam 41. Has been done. As the plunger cam 41, the one having the same shape as the above-mentioned cam 6 can be used, and the orientation of the plunger cam 41 is adjusted so that the contact pressure becomes maximum at the timing during the opening operation.

When the rotation range of the shaft 5 during the opening operation is 90 degrees as in the case of the first embodiment, and the handle portion 7 rotates counterclockwise at the clock position from 9:00 to 6:00, the handle portion The rotation range of the top 6a of the cam 6 interlocked with the 7 and the shaft 5 is from 6 o'clock to 3 o'clock, and the rotation range of the top of the plunger cam 41 is shifted by 45 degrees counterclockwise with respect to, for example, the cam 6. The plunger cam 41 is mounted on the shaft 5 so as to be within the above range.

In the electromagnetic operating device 100 according to the second embodiment, the top of the plunger cam 41 is in contact with the plunger 40 to compress the push spring 40a at a position in the middle of the rotation region when the shaft 5 is opened. Therefore, in the latter half where the top of the plunger cam 41 in the rotation range of the shaft 5 exceeds the plunger 40, the contact pressure of the push spring 40a built in the plunger 40 opens the plunger cam 41. Acts to assist. Therefore, it becomes easy to perform the manual opening operation of the three-phase switch 200 at once without relying only on the operating force of the operator of the handle portion 7.

Since the plunger 40 has the maximum contact pressure at an intermediate position in the rotation region of the shaft 5, it suppresses the return of the movable shaft 1 once in the open pole state to the closed pole state, and opens the pole. It is possible to maintain the state in a stable manner.
Further, in the first half of the rotation region of the shaft 5, the contact pressure by the plunger 40 gradually increases as the opening operation progresses, so that the force for returning the handle portion 7 to the original closed state at the start of the opening operation. Works. Therefore, even if a load is erroneously applied to the handle portion 7, the plunger 40 acts to maintain the closed pole state, and malfunction can be prevented.
By adjusting the contact pressure received from the plunger 40 in the rotation region of the shaft 5 in this way, it is possible to stably maintain the open pole state or the closed pole state while suppressing malfunction.

Although the present application describes exemplary embodiments, the various features, aspects, and functions described in the embodiments are not limited to the application of a particular embodiment, either alone or. It can be applied to embodiments in various combinations.
Therefore, innumerable variations not illustrated are envisioned within the scope of the techniques disclosed in the present application. For example, it is assumed that at least one component is modified, added or omitted.

1 Movable shaft, 2 Flange, 3 Link member, 3a Rotating shaft, 3b Link tip, 4 Shaft support, 5 Shaft, 6 Cam, 6a Top, 7 Handle, 8 Arm, 9 Handle, 10 Electromagnetic operation Equipment body, 11 frame, 11a frame base, 11b frame support, 12 movable iron core, 13 fixed iron core, 14 coil, 20 manual operation part, 30 spring member, 31 spring retainer plate, 40 plunger, 40a push spring, 41 Plunger cam, 100 electromagnetic operating device, 200 switch, 201 movable contact, 202 fixed contact

The electromagnetic operating device disclosed in the present application is an electromagnetic operating device including a manual operating unit that manually opens a plurality of switches at once, and the manual operating unit operates the switches. A shaft that is rotatably held by the frame of the electromagnetic operating device main body and is arranged so as to hang over an area in which the plurality of electromagnetic operating device main bodies are arranged, and a handle that rotates the shaft. A handle portion, a plurality of cams separately mounted on the shaft corresponding to each of the plurality of the electromagnetic operating device main body portions, and provided between the shaft and the movable shaft of each of the electromagnetic operating device main body portions. A link member is rotatably supported by a rotating shaft supported by the frame, one end of which is in contact with the cam and the other end of which is in contact with the movable shaft. Is configured to simultaneously move a plurality of the movable shafts via the cam and the link member, and the handle portion includes one handle portion provided parallel to the shaft and a handle portion. It is composed of arm portions extending radially outward from both ends of the shaft and connected to both ends of the handle portion, and the handle portion is arranged so as to be exposed on the front side of the electromagnetic operating device. It was done .
Further, the electromagnetic operating device disclosed in the present application is an electromagnetic operating device including a manual operating unit that manually opens a plurality of switches at once, and the manual operating unit refers to the switch. A shaft that is rotatably held by the frame of the main body of the electromagnetic operating device to be operated and is arranged so as to be hung over an area in which the plurality of main bodies of the electromagnetic operating device are arranged, and a handle that rotates the shaft. A handle portion having a portion, a plurality of cams separately mounted on the shaft corresponding to each of the plurality of the electromagnetic operating device main body portions, and between the shaft and the movable shaft of each of the electromagnetic operating device main body portions. A link member provided and rotatably supported by a rotating shaft supported by the frame, one end of which is in contact with the cam and the other end of which is in contact with the movable shaft is provided, and is provided with the opening operation of the handle portion. A plunger, which is configured to rotate the shaft and simultaneously move a plurality of the movable shafts via the cam and the link member, has a push spring built-in, and is fixed to the frame. A plunger cam that is interlocked with the plunger and fixed to the shaft is provided, and the top of the plunger cam comes into contact with the plunger at a position in the middle of the rotation range during the opening operation of the shaft to push the push spring. It is configured to be compressed.

Claims (5)

In an electromagnetic operation device equipped with a manual operation unit that manually opens poles for multiple switches at once.
The above manual operation unit
A shaft that is rotatably held by a frame of a main body of an electromagnetic operating device that operates the switch, and is arranged so as to be hung over an area in which a plurality of main bodies of the electromagnetic operating device are arranged.
A handle portion having a handle portion for rotating the shaft,
A plurality of cams separately mounted on the shaft corresponding to each of the plurality of electromagnetic operating device main bodies.
It is provided between the shaft and the movable shaft of each of the electromagnetic operating device main bodies, and is rotatably supported by a rotating shaft supported by the frame, one end of which is the cam and the other end of which is movable. Equipped with a link member in contact with the shaft
An electromagnetic operation device characterized in that the shaft is rotated in association with the opening operation of the handle portion, and a plurality of the movable shafts are simultaneously moved via the cam and the link member. The three phases of the electromagnetic operating device main body are arranged side by side along the axial direction of the shaft, and the three movable shafts separately provided on the electromagnetic operating device main body are separated from each other and parallel to each other. The electromagnetic operating device according to claim 1, wherein the electromagnetic operating device is arranged in. The handle portion is composed of one handle portion provided parallel to the shaft and an arm portion connecting the shaft and the handle portion, and the handle portion is the front surface of the electromagnetic operating device. The electromagnetic operating device according to claim 1 or 2, wherein the electromagnetic operating device is arranged so as to be exposed to the side. The handle portion of the handle portion is held on the front side of the shaft in front of the electromagnetic operating device when the pole is closed, and is pushed downward and rotates around the shaft when the pole is opened. The electromagnetic operating device according to claim 3, wherein the electromagnetic operating device is configured to be used. The manual operation unit has a built-in push spring, a plunger fixed to the frame, and a plunger cam linked to the plunger and fixed to the shaft.
Claims 1 to 4, wherein the top of the plunger cam is configured to come into contact with the plunger and compress the push spring at a position in the middle of the rotation range during the opening operation of the shaft. The electromagnetic operating device according to any one of the above.

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