TW202038276A - Electromagnetic operating device - Google Patents

Abstract

This invention provides an electromagnetic operating device having a manual operating unit for collectively operating a plurality of switches, the manual operating unit having a shaft rotatably held in a frame of an electromagnetic operating device main body and spanning an area where a plurality of the electromagnetic operating device main bodies are arranged, a handle portion for rotating the shaft, a plurality of cams separately mounted on the shaft and corresponding to each of the electromagnetic operating device main bodies, and a link member rotatably supported by a rotating shaft supported in the frame and contacting to a cam with one end and contacting to a movable shaft with the other end, the manual operating portion being configured to rotate the shaft in accordance with an opening operation of the handle portion and simultaneously move a plurality of the movable shafts via the cams and the link member.

Description

Electromagnetic operating device

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

As for the switch, there is a vacuum circuit breaker in which a movable contactor and a fixed contactor are built in a vacuum container, and the movable contactor is moved to perform opening and closing operations. The electromagnetic operating device for operating the switch is constructed so as to be capable of not only electromagnetic operation but also manual operation. In the case of manual disconnection operation, for example, the operator rotates the rotating shaft to drive a lever fixed to the rotating shaft, and the lever directly pushes the movable shaft of the electromagnetic operating device. Make it drive. In addition, the rotating shaft is a structure driven by a tool such as a wrench (for example, refer to Patent Document 1). In addition, as far as the conventional opening and closing device is concerned, there has been disclosed a structure in which the three-phase switch (switch) part (switch) is opened and closed together, and the handle of other parts is installed during manual operation. On the main shaft (rotating shaft), the drive shaft (movable shaft) is directly driven by a lever fixed to the main shaft (for example, refer to Patent Document 2). [Prior Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent No. 5901351 Patent Document 2: Japanese Patent No. 4668165

[The problem to be solved by the invention]

The electromagnetic operating device of Patent Document 1 is a pair of a manual operation mechanism and an electromagnetic operating device. For this reason, if a three-phase switch is included in the switch device imagined as one unit, and the three phases are individually equipped with electromagnetic operating devices, it is necessary to perform manual disconnection operations for each phase. Manual operation, so the phase-out condition will occur temporarily.

In addition, in the structure of Patent Documents 1 and 2, because it is a structure in which the movable shaft is directly driven by a lever fixed to the rotating shaft, an operating torque sufficient to directly rotate and operate the rotating shaft to which the lever is fixed is required (torque ), and in terms of operability, the operating torque will increase due to the increase in the number of devices that are manually operated together. In addition, there is also a problem in operability that a handle for manual operation is not equipped on the device side.

This case discloses a technology for solving the above-mentioned problems, and its purpose is to provide an electromagnetic operating device that can manually operate a plurality of switches together and has excellent operability. [Means to solve the problem]

The electromagnetic operating device disclosed in the present application is provided with a manual operating unit for manually opening and closing a plurality of switches together, wherein the manual operating unit includes: a shaft, which is rotatably held to operate the opening and closing The frame of the main body of the electromagnetic operating device of the device, and is arranged so as to be placed on the area where the main parts of the electromagnetic operating device are arranged; the handle portion, which has a handle portion for rotating the shaft; a plurality of A cam (cam) corresponding to each of the plurality of electromagnetic operating device body parts and respectively mounted on the shaft; and a link member provided on the shaft and the movable shaft of each of the electromagnetic operating device body parts Between and rotatably supported by the rotating shaft supported by the frame, one end of which is in contact with the cam, and the other end in contact with the movable shaft; and the manual operation portion is configured to accompany the handle portion The opening operation rotates the shaft, and simultaneously moves a plurality of the movable shafts through the cam and the link member. [Invention Effect]

According to the electromagnetic operating device disclosed in this case, it is a structure in which a cam mounted on a shaft and a link member are linked to move the movable shaft. Therefore, compared to the use of a member that moves the movable shaft directly mounted on the shaft The design margin can be increased as the number of parts linked with the shaft increases, and it is easy to adjust the operating torque required for manual operation, and can be operated together by manually operating the handle fixed to the shaft Multiple movable shafts can improve operability.

Implementation mode 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 of the electromagnetic operating device 100 of the first embodiment, and is a schematic diagram showing the connection relationship with the switch 200 that is opened and closed by the electromagnetic operating device 100. Here, the switch 200 is, for example, a vacuum circuit breaker, and the electromagnetic operating device 100 and the switch 200 can constitute the switch. The electromagnetic operating device 100 is provided with the electromagnetic operating device main body 10, which electromagnetically operates the switch 200 when the power source is available, and the manual operating portion 20, which is used for the operator to check in an emergency such as power loss The shutter 200 is manually operated. In Figure 1, the electromagnetic operating device main body 10 is arranged in the center, the shutter 200 is arranged on the right side, and the manual operation portion 20 is arranged on the left side, and extends in the left and right directions so as to penetrate through these members. Movable shaft 1. Furthermore, the three-phase switch 200 is arranged side by side on the depth side of FIG. 1, and the face at the left end in FIG. 1 becomes the front surface of the electromagnetic operating device 100.

The shutter 200 is constructed such that the movable contactor 201 and the fixed contactor 202 are butted in the axial direction in the vacuum container. The movable shaft 1 connected to the movable contactor 201 is operated by the electromagnetic operating device main body 10 Or the manual operation part 20 controls opening and closing. In addition, in Figure 1, the description of the insulating part between the movable contact 201 and the electromagnetic operating device main body 10 and the conductive part connected to the two contacts is omitted.

FIG. 2 is an enlarged side sectional view of the electromagnetic operating device 100, and illustrates the structure of the electromagnetic operating device main body 10 that drives the movable shaft 1 by electromagnetic operation and the detailed structure of the manual operating portion 20 that manually drives the movable shaft 1 . Fig. 2 corresponds to a side sectional view taken along the line A-A of Fig. 3 described later. The electromagnetic operating device main body 10 refers to a mechanism that performs opening and closing operations of the shutter 200 during normal operation, and is provided with a movable iron core 12 inside a two-plate-shaped frame 11 that is supported by the frame support portion 11b. And the fixed iron core 13, the movable iron core 12 is fixed to the movable shaft 1 and configured to move in the axial direction by opening and closing operations, and the fixed iron core 13 is fixed to the frame 11 and disposed opposite to the movable iron core 12. The movable iron core 12 is operated by the energized state of the coil 14. When it is moved from the closed state to the open state, the movable iron core 12 will face the opening direction shown by the arrow in the first figure ( The left side) moves, and the movable iron core 12 separates from the fixed iron core 13. When the movable iron core 12 is separated from the fixed iron core 13 and a gap is generated between the two iron cores, the movable shaft 1 is driven by a spring member provided at the end (left end) of the movable shaft 1 on the opposite side of the shutter 200 30 moves in the disconnecting direction (trip direction), and the movable contact 201 of the shutter 200 separates from the fixed contact 202 and becomes the disconnected state. Furthermore, a spring pressing plate 31 for pressing the spring member 30 is arranged at the end of the movable shaft 1.

The manual operation part 20 refers to a mechanism part for switching the shutter 200 from the closed state to the open state by an operator's manual operation. As shown in FIG. 2, the manual operation portion 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 shutter 200. Moreover, the manual operation portion 20 is mainly composed of the following components: a link member 3 which pushes a flange 2 fixed on the outer periphery of the movable shaft 1 in the axial direction; a rotating shaft 3a, which The link member 3 is rotatably supported; the shaft support part 4 is supported by the frame 11; the shaft 5 is rotatably supported by the shaft support part 4; the cam 6 is fixed on the shaft 5 and is connected to the link member 3 contact; and a handle portion 7, which is composed of an arm portion 8 extending from the shaft 5 toward the radial direction outer side and a handle portion 9 mounted on the radial direction outer end portion of the arm portion 8.

For further explanation, the shaft 5 is arranged to be placed on the area where the three-phase electromagnetic operating device body 10 is arranged, and the three cams correspond to each of the three-phase electromagnetic operating device body 10 respectively. Installed on a shaft 5. Furthermore, the link member 3 is provided between the shaft 5 and the movable shaft 1 of each electromagnetic operating device body 10, and is rotatably supported on the rotating shaft 3a supported by the frame 11, and one end of the link member 3 The part is in contact with the cam 6 and the other end part is in contact with the flange 2 fixed to the movable shaft 1 in an integrated manner. The link member 3 is a member that transmits the movement of the cam 6 and is formed in a size corresponding to the distance between the shaft 5 and the movable shaft 1. In the example shown in FIG. 2, the link member 3 has a planar shape that is bent into an arc shape, and the end protrudes toward the flange 2 and the cam 6 side, and has a flat joint surface in contact with the cam 6. The electromagnetic operating device 100 of this case is configured to rotate the shaft 5 with the opening operation of the handle portion 7, and simultaneously move the three-phase movable shaft 1 through the cam 6 and the link member 3, thereby performing manual operations The three phases are disconnected together.

Fig. 3 is a front view of the electromagnetic operating device 100 in a closed state as viewed from the front side. As shown in Fig. 3, the three-phase electromagnetic operating device main body 10 is arranged in a row along the axial direction of the shaft 5 (left-right direction), and the movable shafts 1 respectively provided on the electromagnetic operating device main body 10 are separated from each other The ground is arranged in parallel, and the movable shaft 1 and the shaft 5 are separately arranged so as to ensure a certain distance for rotating the link member 3. In Figure 3, the three movable shafts 1 extend in the depth direction, and one of the handle portions 7 of the manual operation portion 20, a linear handle portion 9 is held in parallel with the shaft 5 below the movable shaft 1. . Then, in order to facilitate the handle operation by the operator, the handle portion 9 of the manual operation portion 20 is exposed on the front side of the flat frame 11 and is installed, and is kept protruding from the front of the operator when closed On the other hand, it becomes a layout with excellent operability.

For example, when the shutter 200 is closed, since the handle 9 is maintained in a state protruding from the front side of the shaft 5, the arm portion 8 extending in the radial direction of the shaft 5 is in a state extending in the horizontal direction. When the rotation angle of the shaft 5 is 90 degrees in the operation area formed by the opening operation, as shown by the dotted line in Figure 1, the handle 9 is arranged on the shaft 5 at the time when the opening operation ends. On the lower side, the arm 8 extends downward from the shaft 5.

Furthermore, it may be configured to provide a stopper (not shown) having a function of maintaining the position of the handle portion 7 so that the handle portion 7 does not move downward due to its own weight. In addition, the handle portion 7 is adjusted to a weight that can suppress rotation due to its own weight. Furthermore, in the closed state, since the movable shaft 1 is pushed to the shutter 200 side by the electromagnetic operating device main body 10, it is configured that the handle 7 does not naturally rotate downward.

Furthermore, as shown in Fig. 3, a rotating shaft 3a for holding the link member 3 rotatably is supported by two frame base portions 11a which are fixed to the surface of the frame 11 via the movable shaft 1 between. 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 size of the link member 3.

FIG. 4 is an enlarged plan view of the main part of the link member 3, and exemplifies the planar shape of the link tip portion 3b of the link member 3 as the engagement portion with the movable shaft 1. In the example of Fig. 4, the end portion of the link member 3 on the side that drives the movable shaft 1 is shown in a state where two link tip portions 3b are arranged in parallel with the movable shaft 1 interposed therebetween. The end of the connecting rod tip 3b is configured to contact the end face of the shutter 200 fixed to the flange 2 of the movable shaft 1, and rotate with the rotating shaft 3a as a fulcrum along with the opening operation, so as to rotate the flange 2 The end face is pressed toward the opposite side of the shutter 200.

Fig. 5 is a perspective view of the electromagnetic operating device 100 when it is closed when viewed from the front side. The handle portion 9 of the handle portion 7 is placed on the front side and is arranged to connect the shaft 5 and both ends of the handle portion 9 There is an arm 8. The handle 7 is integrated in the electromagnetic operating device 100, so there is no need to install the handle of other components before manual operation, and manual operation can be started immediately in an emergency. In addition, because it is configured as a quadrangular frame formed by connecting the ends of the shaft 5 and the handle 9 with the arm portion 8, the shaft 5 can be rotated more than when the driving force is applied to only one end of the shaft 5. The state is stable. Moreover, because the handle 9 is set in accordance with the width of the three-phase device on which the shaft 5 is mounted, it is sufficient for the operator to naturally grasp the handle 9 with both hands during the closing operation. length. Moreover, at the beginning of the disconnection, the operator grasps the handle 9 and applies a downward force to start the rotation. Therefore, the operator can operate while exerting his weight, and it is easy to ensure the manual operation of the three phases. Operating torque. In this way, the electromagnetic operating device 100 of the present application has better operability than ever in the manual operation performed by the manual operating unit 20.

Next, the operation of the cam 6 and the link member 3 during the opening operation will be explained using FIG. 6. Fig. 6 is an enlarged side view showing a state in which the cam 6 and the link member 3 are linked. In this example, the cam 6 is formed by a plate cam having an oval top. The base circle of the cam 6 is arranged coaxially with the shaft 5, and the top part 6a protruding from the base circle by only a predetermined lift amount is mounted on the shaft 5 in a downward manner when closed. When the shaft 5 rotates 90 degrees counterclockwise by the opening operation, the cam 6 shown by the dotted line in Figure 6 will rotate until its top 6a becomes a rightward position, and the top 6a protrudes from the movable shaft 1. The state of the shutter 200 side in the axial direction. Along with this, the link member 3 will rotate counterclockwise with the rotating shaft 3a as the center (fulcrum), and one end (lower end) of the link member 3 will be moved toward the shutter 200 side (right side) in the axial direction by the top part 6a. ) Is pushed, and the other end (upper end) of the link member 3 is pushed toward the opposite side (left side) of the shutter 200 in the axial direction of the movable shaft 1 to drive the movable shaft 1 in the opening direction.

Furthermore, since the cams 6 mounted on the shaft 5 are provided for the three shutters 200, the three cams 6 are separately mounted on the shaft 5 corresponding to the movable shaft 1. The three cams 6 are arranged Set to the same shape and the same direction. In addition, the distance from the shaft 5 to the top 6a (point of application) of the cam 6 is set to be smaller than the distance from the grip portion 9 (force point) of the handle portion 7 to the shaft 5 (fulcrum), thereby enabling The principle of lever is used to drive the cam 6 with a smaller operating torque.

Here, the rotating shaft 3 a serving as the 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 of the line connecting one end (applying 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 , But can also be set at an offset position other than the midpoint. For example, in the link member 3, the distance between the force application point and the fulcrum (rotating shaft 3a) is adjusted to be larger than the distance between the fulcrum and the application point, whereby the principle of lever can be used to operate with a smaller torque To move the movable shaft 1 in the breaking direction. Conversely, by adjusting the distance between the force point and the fulcrum to be smaller than the distance between the fulcrum and the point of application, the movable shaft 1 can be changed by the opening operation of the movable shaft 1 by the manual operation portion 20. Move substantially.

In this way, the link member 3 is a part with a high design margin that can determine its shape and arrangement according to conditions such as the scale and internal structure of the electromagnetic operating device 100, the shape of the handle portion 7 and the cam 6, and so on. Furthermore, the electromagnetic operating device 100 of the present application, which is provided with the above-mentioned cam 6 and the link member 3, has a design margin that is directly mounted on the shaft 5 than the member used to move the movable shaft 1 (the lever in the prior art) Since the structure is higher, the shapes of the cam 6 and the link member 3 can be adjusted, and the three-phase manual operation can be performed within the range of the operating torque that can be secured in an emergency, and the operability can be improved more than before.

Implementation form 2. Next, the electromagnetic operating device 100 according to the second embodiment of the present application will be explained using FIGS. 7 and 8. FIG. Figure 7 is a front view of the electromagnetic operating device 100 in a closed state as seen from the front side. At the position of the right end of the shaft 5, a plunger 40 is fixed on the outer surface of the frame 11 and is connected to the plunger. A cam 41 for a plunger is attached to the shaft 5 in a manner of 40 contact. The side sectional view taken along the line B-B in Fig. 7 is shown in Fig. 8.

As shown in Fig. 8, the plunger 40 has a pressing spring 40a built therein, and is configured such that the pressing spring 40a is compressed by contacting the plunger cam 41 and at the same time applies contact pressure to the plunger cam 41 . The plunger cam 41 can be of the same shape as the aforementioned cam 6, and the direction of the plunger cam 41 can be adjusted so that the timing of the contact pressure during the opening operation becomes the maximum.

When the turning area of the shaft 5 is 90 degrees as in the case of the first embodiment, and the handle 7 is turned counterclockwise from 9 o'clock to 6 o'clock at the clock position, the rotation area is the same as that of the handle The rotation area of the top part 6a of the cam 6 linked by the part 7 and the shaft 5 is from 6 o'clock to 3 o'clock, and the rotation area of the top part of the plunger cam 41 is, for example, counterclockwise with respect to the cam 6 Mounted on shaft 5 in such a way that the direction is shifted by only 45 degrees.

In the electromagnetic operating device 100 of the second embodiment, the top of the plunger cam 41 is brought into contact with the plunger 40 at the middle position of the rotation area during the opening operation of the shaft 5 to compress the pressing spring 40a. The top of the plunger cam 41 in the rotation area of the shaft 5 exceeds the rear half of the plunger 40, and the contact pressure of the pressing spring 40a built in the plunger 40 will act on the plunger cam 41 to assist the opening operation . Therefore, instead of relying only on the operating force of the handle 7 by the operator, the manual opening operation of the three-phase switch 200 can be easily performed together.

Furthermore, the contact pressure of the plunger 40 is maximized at the middle position of the rotation region of the shaft 5, so that the movable shaft 1 once in the open state can be prevented from returning to the closed state, and the open state can be maintained stably. Moreover, in the first half of the rotation area of the shaft 5, as the opening operation progresses, the contact pressure formed by the plunger 40 gradually increases, so when the opening operation starts, there is a desire to move the handle. 7 The force of returning to the original closed state acts. Therefore, even if a load is applied to the handle portion 7 by mistake, the plunger 40 still acts to maintain the closed state, which can prevent malfunction. In this way, by adjusting the strength of the contact pressure received from the plunger 40 in the rotation area of the shaft 5, it is possible to stably maintain the open state or the closed state while suppressing malfunction.

Although an exemplary embodiment is described in this case, the various features, aspects, and functions described in the embodiment are not limited to the application of the specific embodiment, but can be applied to the embodiment alone or in various combinations. Therefore, countless variations that are not illustrated can be conceived within the technical scope disclosed in this case. For example, the case where at least one component is changed, the case where at least one component is added, or the case where at least one component is omitted, etc. are also included.

1: movable shaft 2: flange 3: Connecting rod member 3a: Rotation axis 3b: Front end of connecting rod 4: Shaft support 5: axis 6: cam 6a: top 7: Handle 8: Arm 9: Handle 10: Electromagnetic operation device body 11: Frame 11a: base of frame 11b: Frame support 12: Movable core 13: fixed core 14: Coil 20: Manual operation part 30: Spring member 31: Spring pressure plate 40: plunger 40a: Push spring 41: Cam for plunger 100: Electromagnetic operating device 200: Shutter 201: Movable Contact 202: fixed contact

Fig. 1 is a partial cross-sectional side view showing the outline of the electromagnetic operating device of the first embodiment. Figure 2 is an enlarged side sectional view of the electromagnetic operating device. Fig. 3 is a front view of the electromagnetic operating device of the first embodiment. Figure 4 is an enlarged plan view of the main part of the link member. Figure 5 is a perspective view of the electromagnetic operating device of the first embodiment. Figure 6 is a side view showing the cam and link member. Fig. 7 is a front view of the electromagnetic operating device of the second embodiment. Fig. 8 is a side sectional view taken along the line B-B in Fig. 7.

1: movable shaft

5: axis

6: cam

7: Handle

10: Electromagnetic operation device body

11: Frame

20: Manual operation part

100: Electromagnetic operating device

200: Shutter

201: Movable Contact

202: fixed contact

Claims (5)

An electromagnetic operating device is provided with a manual operating part that manually opens a plurality of switches together, wherein The aforementioned manual operation unit has: A shaft, which is rotatably held on the frame of the main body of the electromagnetic operating device for operating the switch, and is arranged to be supported on the area where the main parts of the electromagnetic operating device are arranged; A handle portion, which has a handle portion for rotating the shaft; A plurality of cams corresponding to each of the plurality of main parts of the electromagnetic operating device are respectively mounted on the shaft; and The link member is provided between the shaft and the movable shaft of each of the electromagnetic operating device main bodies, and is rotatably supported by the rotating shaft supported by the frame, one end of which contacts the cam, and the other end In contact with the above movable shaft; and The manual operation portion is configured to rotate the shaft in accordance with the opening operation of the handle portion, and simultaneously move a plurality of the movable shafts through the cam and the link member. The electromagnetic operating device described in the first item of the scope of patent application, wherein three phases of the electromagnetic operating device body are arranged along the axial direction of the shaft, and the three electromagnetic operating device body parts are respectively provided in the three electromagnetic operating device body parts. The above-mentioned movable shaft systems are arranged in parallel to be separated from each other. According to the electromagnetic operating device described in item 1 or item 2 of the scope of patent application, wherein the handle portion is provided by a handle portion arranged in parallel with the shaft, and a connecting shaft and the handle portion The arm portion is configured, and the handle portion is arranged in a state exposed to the front side of the electromagnetic operating device. According to the electromagnetic operating device described in claim 3, wherein the handle portion of the handle portion is configured to be held on the front side of the shaft on the front surface of the electromagnetic operating device when closed, and when the opening starts The time is pushed down and rotates around the aforementioned shaft. According to the electromagnetic operating device described in item 1 or item 2 of the scope of patent application, the manual operation unit includes: a plunger with a built-in pressing spring and fixed to the frame; and a cam for the plunger, and The plunger is linked and fixed to the shaft; and The said manual operation part is comprised so that the top of the said plunger cam contacts the said plunger at the middle position of the rotation area at the time of the opening operation of the said shaft, and compresses the said pressing spring.

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