Electromagnetic operating device
By adopting a combined structure of multiple cams and connecting rod members in the electromagnetic operating device, combined with the design of the handle and plunger, the problems of large manual disconnection operating torque and lack of handle in the prior art are solved, and multiple opening and closing are achieved The efficient manual operation and operational enhancement of the device.
Patent Information
- Application Number
- CN201980094577.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-04-08
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2039-04-08
AI Technical Summary
The existing electromagnetic operating devices need to operate independently for each phase when manually disconnecting the operation, resulting in increased operating torque and poor operability, and lack of handle support, which affects operating convenience.
An electromagnetic operating device including manual operating components is designed, and a combination structure of multiple cams and link members is adopted. The handle drive shaft is used to move multiple movable shafts simultaneously, increasing the design margin and reducing the operating torque requirement. And provide additional compression force during disconnection operation through the plunger and pressing spring to assist in manual operation.
The operability of manual operation of multiple shutters is improved, the torque required for manual operation is reduced, the operation ease is enhanced, and the design margin of the device is increased through the design of the cam and link member.
Smart Images
Figure CN113614869B_ABST
Abstract
Description
Technical Field
[0001] The present application relates to an electromagnetic operating device for operating a switch, for example. Background Art
[0002] As a switch, there is a vacuum circuit breaker in which a movable contact and a fixed contact are built into a vacuum container, and the opening and closing operation is performed by moving the movable contact. The electromagnetic operating device for operating the switch is configured to be capable of not only electromagnetic operation but also manual operation. In the case of a manual disconnection operation, for example, the operator drives the joystick fixed to the rotating shaft by rotating the rotating shaft, and drives the electromagnetic operating device by directly pressing the movable shaft of the electromagnetic operating device through the joystick. In addition, the rotating shaft is a structure that is driven using a tool such as a wrench (for example, refer to Patent Document 1).
[0003] In addition, as a conventional switching device, a structure for performing switching operations on three-phase switch parts (switches) at the same time has been disclosed, in which the handles of other parts are mounted on the main shaft (rotating shaft) during manual operation, and the driving shaft (movable shaft) is directly driven by a joystick fixed to the main shaft (for example, refer to patent document 2).
[0004] Prior art literature
[0005] Patent Literature
[0006] Patent Document 1: Japanese Patent No. 5901351
[0007] Patent Document 2: Japanese Patent No. 4668165 Summary of the invention
[0008] Technical problem to be solved by the invention
[0009] In the electromagnetic operating device of Patent Document 1, the mechanism for manual operation is provided as a pair with the electromagnetic operating device. Therefore, assuming that a switchgear includes a three-phase switch and an electromagnetic operating device is provided separately for each phase, manual operation needs to be performed for each phase when performing a manual disconnection operation, so a phase loss state will temporarily occur.
[0010] In addition, in the structures of Patent Documents 1 and 2, since the movable shaft is directly driven by the joystick fixed to the rotating shaft, an operating torque sufficient to directly rotate the rotating shaft to which the joystick is fixed is required, and 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 at the same time. In addition, there is a problem in operability in that the device side is not equipped with a handle for manual operation.
[0011] The present application discloses a technology for solving the above-mentioned technical problems, and an object of the present application is to provide an electromagnetic operating device that can manually operate a plurality of switches at once and has excellent operability.
[0012] Technical solutions adopted to solve technical problems
[0013] The electromagnetic operating device disclosed in the present application includes a manual operating part for manually disconnecting a plurality of switches at a time, wherein the manual operating part includes: a shaft, the shaft is freely rotatably held in a frame of a main body of the electromagnetic operating device for operating the switches, and is arranged in a manner of being mounted on an area where a plurality of main bodies of the electromagnetic operating device are arranged; a handle part, the handle part having a grip part for rotating the shaft; a plurality of cams, the plurality of cams being respectively mounted on the shaft corresponding to each of the plurality of main bodies of the electromagnetic operating device; and a connecting rod member, the connecting rod member being arranged between the shaft and each of the main bodies of the electromagnetic operating device. The movable shaft of the main body of the electromagnetic operating device is supported by a rotating shaft supported on the above-mentioned frame and can be freely rotatably supported. One end of the connecting rod member contacts the above-mentioned cam, and the other end contacts the above-mentioned movable shaft. The above-mentioned shaft is rotated along with the disconnection operation of the above-mentioned handle part, and the multiple above-mentioned movable shafts are moved simultaneously through the above-mentioned cam and the above-mentioned connecting rod member. The above-mentioned handle part is composed of a handle part arranged parallel to the above-mentioned shaft and arm parts extending radially outward from the two ends of the above-mentioned shaft and respectively connected to the two end parts of the above-mentioned handle part. The above-mentioned handle part is arranged in a state of being exposed on the front side of the above-mentioned electromagnetic operating device.
[0014] In addition, the electromagnetic operating device disclosed in the present application includes a manual operating part for manually disconnecting multiple switches at the same time, wherein the manual operating part includes: a shaft, the shaft can be freely rotatably held on the frame of the electromagnetic operating device main body for operating the switches, and is arranged in a manner of being mounted on an area where multiple electromagnetic operating device main bodies are arranged; a handle part, the handle part has a grip part for rotating the shaft; multiple cams, the multiple cams are respectively installed on the shaft corresponding to each of the multiple electromagnetic operating device main bodies; and a connecting rod member, the connecting rod member is arranged between the shaft and the movable shaft of each of the electromagnetic operating device main bodies. The handle is connected to the link member so as to rotate the shaft in a manner that the handle is disconnected and the plurality of movable shafts are moved simultaneously via the cam and the link member. The manual operation portion comprises: a plunger having a built-in pressing spring and fixed to the frame; and a plunger cam, the plunger cam being linked to the plunger and fixed to the shaft, and being configured such that at the middle position of the rotation area during the disconnection operation of the shaft, the top of the plunger cam is in contact with the plunger to compress the pressing spring.
[0015] Effects of the Invention
[0016] According to the electromagnetic operating device disclosed in the present application, since the cam installed on the shaft is linked to the connecting rod member to move the movable shaft, compared with the structure in which a member for moving the movable shaft is directly installed on the shaft, the design margin is increased by the amount of parts linked to the shaft, the adjustment of the operating torque required for manual operation becomes easy, and by manually operating the handle part fixed to the shaft, multiple movable shafts can be operated at the same time, thereby improving operability. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a partial cross-sectional view schematically showing the electromagnetic operation device according to the first embodiment.
[0018] Figure 2 It is an enlarged side sectional view of the electromagnetic operating device.
[0019] Figure 3 This is a front view of the electromagnetic operation device according to the first embodiment.
[0020] Figure 4 It is an enlarged plan view of the main part of the connecting rod component.
[0021] Figure 5 This is a perspective view of the electromagnetic operation device according to the first embodiment.
[0022] Figure 6 It is a side view showing the cam and the link member.
[0023] Figure 7 This is a front view of the electromagnetic operation device according to the second embodiment.
[0024] Figure 8 It is along Figure 7 Side cross-sectional view of line BB. DETAILED DESCRIPTION
[0025] Implementation Method 1
[0026] use Figures 1 to 6 , the electromagnetic operating device 100 according to the first embodiment of the present application is described.
[0027] Figure 1 1 is a partial cross-sectional side view showing the electromagnetic operating device 100 according to Embodiment 1, and is a diagram showing the connection relationship between the electromagnetic operating device 100 and a 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 constitute a switching device.
[0028] The electromagnetic operating device 100 includes: an electromagnetic operating device body 10, which electromagnetically operates the switch 200 when power is available; and a manual operating unit 20, which is used by an operator to manually operate the switch 200 in an emergency such as when power is lost. Figure 1 In the embodiment, 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 part 20 is arranged on the left side. The movable shaft 1 is arranged to extend in the left-right direction in a manner of penetrating these components. Figure 1 The depth side arrangement configuration, Figure 1 The left end surface of becomes the front surface of the electromagnetic operation device 100.
[0029] The switch 200 is constructed such that a movable contact 201 and a fixed contact 202 are connected axially in a vacuum container, and the movable shaft 1 connected to the movable contact 201 is operated by the electromagnetic operating device main body 10 or the manual operating part 20 to control the opening and closing. Figure 1 In the figure, description of the structure of the insulating portion between the movable contact 201 and the electromagnetic operating device main body 10 and the conductive portion connected to the two contacts is omitted.
[0030] Figure 2It is an enlarged side cross-sectional view of the electromagnetic operation device 100 , illustrating the structure of the electromagnetic operation device main body 10 that drives the movable shaft 1 by electromagnetic operation and the detailed structure of the manual operation part 20 that drives the movable shaft 1 manually. Figure 2 Equivalent to the following Figure 3 Side section view along line AA.
[0031] The main body 10 of the electromagnetic operating device is a mechanism for opening and closing the switch 200 during normal operation. It includes a movable iron core 12 and a fixed iron core 13 inside two opposing plate-shaped frames 11 supported by the frame support portion 11b. The movable iron core 12 is fixed to the movable shaft 1 and is configured to move in the axial direction during the opening and closing operation. The fixed iron core 13 is fixed to the frame 11 and is arranged opposite to the movable iron core 12. The movable iron core 12 is operated by the energized state of the coil 14. When the state changes from the closed state to the open state, the movable iron core 12 moves to the Figure 1 , and the movable iron core 12 moves away from the fixed iron core 13. When the movable iron core 12 moves away from the fixed iron core 13 and a gap is generated between the two iron cores, the movable shaft 1 moves in the disconnection direction (pulling direction) through the spring member 30 provided at the end (left end) of the movable shaft 1 on the opposite side of the switch 200, and the movable contact 201 of the switch 200 moves away from the fixed contact 202 and becomes disconnected. In addition, a spring pressure plate 31 is provided at the end of the movable shaft 1, and the spring pressure plate 31 is used to press the spring member 30.
[0032] The manual operation unit 20 is a mechanism for switching the switch 200 from a closed state to an open state through manual operation by an operator. Figure 2 As shown, the manual operation part 20 is provided at one end of the movable shaft 1 provided with the spring member 30, that is, the end on the side not connected to the shutter 200. In addition, the manual operation part 20 is mainly composed of a link member 3, a rotating shaft 3a, a shaft support part 4, a shaft 5, a cam 6 and a handle part 7, wherein the link member 3 presses the flange 2 fixed to the outer peripheral part of the movable shaft 1 in the axial direction, the rotating shaft 3a supports the link member 3 rotatably, 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 to the shaft 5 and contacts the link member 3, and the handle part 7 is formed by an arm part 8 extending radially outward from the shaft 5 and a grip part 9 mounted on the radially outer end of the arm part 8.
[0033] Furthermore, the shaft 5 is disposed so as to be spanned in a region where the three-phase electromagnetic operating device main bodies 10 are arranged, and three cams are mounted on one shaft 5 corresponding to each of the three-phase electromagnetic operating device main bodies 10 .
[0034] In addition, 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. One end of the link member 3 contacts the cam 6, and the other end contacts the flange 2 fixed in a manner integral with the movable shaft 1. The link member 3 is a member for transmitting the action of the cam 6, and is formed to a size corresponding to the distance between the shaft 5 and the movable shaft 1. Figure 2 In the example shown, the planar shape of the link member 3 is curved into an arch shape, the end portion thereof protrudes toward the flange 2 and the cam 6 , and the link member 3 has a flat joint surface that contacts the cam 6 .
[0035] The electromagnetic operating device 100 of the present application is configured to rotate the shaft 5 in accordance with the disconnection operation of the handle portion 7, and simultaneously move the movable shafts 1 of the three phases via the cam 6 and the link member 3, thereby performing the disconnection operation of the three phases manually at once.
[0036] Figure 3 1 is a front view of the electromagnetic operating device 100 in a closed state as viewed from the front side. Figure 3 As shown, three-phase electromagnetic operating device main bodies 10 are arranged in a row along the axial direction (left-right direction) of the shaft 5, and the movable shafts 1 respectively provided in the electromagnetic operating device main bodies 10 are arranged separately and in parallel with each other, and the movable shafts 1 are arranged separately from the shaft 5 to ensure a certain distance for rotating the link member 3. Figure 3 In the embodiment, three movable shafts 1 extend in the depth direction, and on the lower side of the movable shafts 1 , a linear grip portion 9 of a handle portion 7 of a manual operation portion 20 is held parallel to the shaft 5 .
[0037] Furthermore, in order to facilitate the operator's handle operation, the handle 9 of the manual operation unit 20 is exposed on the front side of the flat frame 11 and is held so as to protrude toward the operator when closed, thereby achieving a layout with good operability.
[0038] For example, when the switch 200 is closed, the handle 9 is held in a state of protruding toward the front side of the shaft 5, so the arm 8 extending in the radial direction of the shaft 5 is in a state of extending in the horizontal direction. When the operation area of the disconnection operation is 90 degrees around the rotation angle of the shaft 5, at the moment when the disconnection operation is completed, Figure 1 As shown by the dotted line in FIG. 5 , the handle portion 9 is provided on the lower side of the shaft 5 , and the arm portion 8 is in a state of extending downward from the shaft 5 .
[0039] Furthermore, a stopper or the like (not shown) having a function of maintaining the position of the handle portion 7 may be provided so that the handle portion 7 does not move downward due to its own weight.
[0040] In addition, the handle 7 is adjusted to a weight that can suppress rotation due to its own weight. In addition, in the closed state, the movable shaft 1 is pressed toward the shutter 200 by the electromagnetic operating device body 10, so the handle 7 is configured not to rotate downward naturally.
[0041] In addition, if Figure 3 As shown, the rotating shaft 3a for freely rotating the link member 3 is mounted between two frame base parts 11a fixed to the surface part of the frame 11, sandwiching the movable shaft 1. The direction in which the axis of the rotating shaft 3a extends is a direction 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.
[0042] Figure 4 FIG. 1 is an enlarged plan view of a main part of the link member 3, and illustrates the plan shape of the link tip end portion 3b of the link member 3 as an engaging portion that engages with the movable shaft 1. Figure 4 In the example of FIG. 1 , two connecting rod front end portions 3b are arranged in parallel with the movable shaft 1 sandwiched between the two connecting rod front end portions 3b at the end portion on the side that drives the movable shaft 1 of the connecting rod member 3. The end portion of the connecting rod front end portion 3b is configured to contact the end surface of the flange 2 fixed to the movable shaft 1 on the shutter 200 side, rotate with the rotating shaft 3a as a fulcrum in accordance with the disconnection operation, and press the end surface of the flange 2 to the opposite side of the shutter 200.
[0043] Figure 5 This is a perspective view of the electromagnetic operating device 100 when closed, as viewed from the front side, in which the handle portion 9 of the handle portion 7 is exposed on the near front side, and the arm portion 8 is provided to connect the shaft 5 to both ends of the handle portion 9. Since the handle portion 7 is equipped in an integrated manner with the electromagnetic operating device 100, there is no need to install a handle of another component before manual operation, and manual operation can be performed immediately in an emergency.
[0044] In addition, since the shaft 5 is configured as a quadrilateral frame body connecting the two ends of the handle 9 through the arm 8, the rotation state of the shaft 5 can be stabilized compared to the case where the driving force is applied to only one end of the shaft 5. In addition, since the handle 9 is provided to match the width of the three-phase device on which the shaft 5 is mounted, a sufficient length can be ensured so that the operator can naturally grasp the handle 9 with both hands during the closing operation. In addition, at the beginning of disconnection, since the operator grasps the handle 9 and applies a downward force to start the rotation, the operator can operate while applying weight, thereby easily ensuring the operating torque required for manually operating the three phases at the same time.
[0045] In this way, the electromagnetic operating device 100 of the present application has better operability than before in terms of manual operation through the manual operating part 20.
[0046] Next, use Figure 6 The operation of the cam 6 and the link member 3 during the disconnection operation will be described. Figure 6 It is an enlarged side view showing a state where the cam 6 and the link member 3 are linked.
[0047] In this example, the cam 6 is composed of an egg-shaped plate cam having a top. The base circle of the cam 6 is arranged coaxially with the shaft 5, and the top 6a protruding from the base circle by a predetermined lift amount is attached to the shaft 5 so as to face downward when closed. When the shaft 5 is rotated 90 degrees counterclockwise by the disconnection operation, Figure 6 The cam 6 shown by the dotted line in the figure rotates to a position where its top 6a faces right, and the top 6a is in a state of protruding toward the shutter 200 side in the axial direction of the movable shaft 1. In association with this, the link member 3 rotates counterclockwise with the rotating shaft 3a as the center (fulcrum), and one end (lower end) of the link member 3 is pressed toward the shutter 200 side (right side) in the axial direction by the top 6a, and the other end (upper end) of the link member 3 is pressed toward the side (left side) opposite to the shutter 200 in the axial direction of the movable shaft 1, thereby driving the movable shaft 1 in the disconnection direction.
[0048] Furthermore, since the cams 6 mounted on the shaft 5 are provided for the three shutters 200 , respectively, the three cams 6 are mounted separately from each other on the shaft 5 corresponding to the movable shaft 1 , and the three cams 6 are arranged in the same shape and in the same direction.
[0049] In addition, by setting the distance from the shaft 5 to the top 6a (action point) of the cam 6 smaller than the distance from the grip 9 (force point) of the handle 7 to the shaft 5 (fulcrum), the cam 6 can be driven with a smaller operating torque by utilizing the lever principle.
[0050] Here, the rotating shaft 3a as the fulcrum of the connecting rod member 3 is arranged between the movable shaft 1 and the shaft 5. The rotating shaft 3a can be set at the midpoint of the line connecting one end of the connecting rod member 3 (force point) in contact with the cam 6 and the other end of the connecting rod member 3 in contact with the flange 2 of the movable shaft 1 (action point), but can also be set at a deviated position other than the midpoint. For example, in the connecting rod member 3, the distance between the force point and the fulcrum (rotating shaft 3a) is adjusted to be greater than the distance between the fulcrum and the action point, so that the movable shaft 1 can be moved in the disconnection direction with a smaller operating torque by utilizing the lever principle. On the contrary, by adjusting the distance between the force point and the fulcrum to be less than the distance between the fulcrum and the action point, the movable shaft 1 can be disconnected by the manual operation part 20, so that the movable shaft 1 can be moved more.
[0051] Thus, the link member 3 is a component with a high design margin, the shape and configuration of which can be determined according to the scale and internal structure of the electromagnetic operating device 100, the shapes of the handle portion 7 and the cam 6, and other conditions. In addition, the electromagnetic operating device 100 of the present application including the cam 6 and the link member 3 as described above has a high design margin compared to a structure in which a member for moving the movable shaft 1 (a joystick in the prior art) is directly mounted on the shaft 5, and therefore, in an emergency, three-phase manual operation can be performed at once within the range of the operating torque that can be ensured, and the shapes of the cam 6 and the link member 3 can be adjusted, thereby improving operability compared to the past.
[0052] Implementation Method 2
[0053] Next, use Figure 7 and Figure 8 , an electromagnetic operating device 100 according to a second embodiment of the present application is described.
[0054] Figure 7 This is a front view of the electromagnetic operating device 100 in a closed state as viewed from the front side. At the right end of the shaft 5 , the plunger 40 is fixed to the outer surface of the frame 11 , and the plunger cam 41 is mounted on the shaft 5 in a manner that contacts the plunger 40 . Figure 8 Shown along Figure 7 Side cross-sectional view of line BB.
[0055] like Figure 8 As shown in FIG. 1 , the plunger 40 has a built-in pressing spring 40a, and is configured to compress the spring 40a by contacting the plunger cam 41, while applying contact pressure to the plunger cam 41. The plunger cam 41 can use a member of the same shape as the cam 6, and the direction of the plunger cam 41 is adjusted so that the contact pressure at the time of the opening operation becomes the maximum.
[0056] Similar to the case of embodiment 1, the rotation area of the shaft 5 during the disconnection operation is 90 degrees, and the plunger cam 41 is installed on the shaft 5 in the following manner, that is, when the handle portion 7 rotates counterclockwise from the clock position 9 o'clock to 6 o'clock, the rotation area of the top 6a of the cam 6 linked to the handle portion 7 and the shaft 5 changes from the clock position 6 o'clock to 3 o'clock, and the rotation area of the top of the plunger cam 41 is offset by, for example, 45 degrees in the counterclockwise direction relative to the cam 6.
[0057] In the electromagnetic operating device 100 of the second embodiment, the top of the plunger cam 41 contacts the plunger 40 and compresses the pressing spring 40a at the middle position of the rotation range of the shaft 5 during the disconnection operation. Therefore, in the rear half of the rotation range of the shaft 5 where the top of the plunger cam 41 exceeds the plunger 40, the contact pressure of the pressing spring 40a built into the plunger 40 applies force to the plunger cam 41 in a manner that assists the disconnection operation. As a result, the manual disconnection operation of the three-phase switch 20 can be easily performed at once without relying solely on the operating force applied by the operator of the handle portion 7.
[0058] Furthermore, since the contact pressure of the plunger 40 is greatest at the middle position of the rotation range of the shaft 5 , the movable shaft 1 temporarily in the open state can be suppressed from returning to the closed state, thereby stably maintaining the open state.
[0059] Furthermore, in the first half of the rotation range of the shaft 5, the contact pressure applied by the plunger 40 gradually increases as the disconnection operation proceeds, so that at the start of the disconnection operation, a force is applied that attempts to return the handle portion 7 to the original closed state. Thus, even if a load is applied to the handle portion 7 by mistake, the plunger 40 acts to maintain the closed state, thereby preventing malfunction.
[0060] In this way, by varying the strength of the contact pressure received from the plunger 40 in the rotation region of the shaft 5 , it is possible to stably maintain the open state or the closed state while suppressing malfunction.
[0061] In addition, although the present application describes exemplary embodiments, various features, forms, and functions described in the embodiments are not limited to being applied to specific embodiments, and can be applied to the embodiments alone or in various combinations.
[0062] Therefore, numerous modifications not shown in the examples are contemplated within the technical scope disclosed in the present application, including, for example, modifying at least one component, adding at least one component, or omitting at least one component.
[0063] Explanation of symbols
[0064] 1 movable shaft; 2 flange; 3 connecting rod member; 3a rotating shaft; 3b connecting rod front end; 4 shaft support; 5 shaft; 6 cam; 6a top; 7 handle; 8 arm; 9 grip; 10 electromagnetic operating device body; 11 frame; 11a frame base; 11b frame support; 12 movable iron core; 13 fixed iron core; 14 coil; 20 manual operating part; 30 spring member; 31 spring pressing plate; 40 plunger; 40a pressing spring; 41 cam for plunger; 100 electromagnetic operating device; 200 switch; 201 movable contact; 202 fixed contact.
Claims
1. An electromagnetic operating device, comprising a manual operating unit for manually disconnecting a plurality of switches at once, characterized in that: The manual operation unit comprises: A shaft, the shaft being rotatably held on a frame of a main body of an electromagnetic operating device for operating the switch, and being arranged in a manner of being mounted on an area where a plurality of main bodies of the electromagnetic operating device are arranged; A handle portion, wherein the handle portion has a grip portion for rotating the shaft; a plurality of cams, each of the plurality of cams being mounted on the shaft in correspondence with each of the plurality of electromagnetic operation device main bodies; and a link member, the link member being provided between the shaft and the movable shaft of each of the main parts of the electromagnetic operating device and being rotatably supported by a rotating shaft supported by the frame, one end of the link member being in contact with the cam and the other end being in contact with the movable shaft, The shaft is rotated in accordance with the disconnection operation of the handle portion, and the plurality of movable shafts are simultaneously moved via the cam and the link member. The manual operation part includes: a plunger, the plunger has a built-in pressing spring and is fixed to the frame; and a plunger cam, the plunger cam is linked to the plunger and is fixed to the shaft. The top of the plunger cam is configured so that the plunger is in contact with the plunger at an intermediate position of the rotation range during the disconnection operation of the shaft to compress the pressing spring.
2. The electromagnetic operating device according to claim 1, characterized in that: The electromagnetic operating device main body parts of three phases are arranged in parallel along the axial direction of the shaft, and the three movable shafts respectively provided in the electromagnetic operating device main body parts are arranged to be separated from each other and parallel.
3. The electromagnetic operating device according to claim 1, characterized in that: The handle portion includes one grip portion provided in parallel with the axis and an arm portion connecting the axis and the grip portion, and the grip portion is disposed in a state of being exposed on the front side of the electromagnetic operating device.
4. The electromagnetic operating device according to claim 3, characterized in that: The grip portion of the handle portion is configured to be held on the front side of the shaft in the front face of the electromagnetic operating device when closed, and to be pressed downward and rotated around the shaft when disconnection starts.