阅读说明：本技术 电磁操作装置 (Electromagnetic operating device ) 是由 香川耕一 森藤英二 于 2019-04-08 设计创作，主要内容包括：一并手动操作多个开闭器(200)的手动操作部(20)构成为包括：轴(5),其能自由转动地保持于操作开闭器(200)的电磁操作装置主体部(10)的框架(11),并且以架设于排列有多个电磁操作装置主体部(10)的区域的方式配设；手柄部(7),其具有对轴(5)进行转动操作的把手部(9)；多个凸轮(6),他们与电磁操作装置主体部(10)的每一个对应地分别安装于轴(5)；以及连杆构件(3),其设置于轴(5)与各个电磁操作装置主体部(10)的可动轴(1)之间,并由支承于框架(11)的旋转轴(3a)能自由转动地支承,其一端部与凸轮(6)接触,另一端部与可动轴(1)接触,伴随手柄部(7)的断开操作而使轴(5)转动,并经由凸轮(6)和连杆构件(3)使多个可动轴(1)同时地移动。(A manual operation unit (20) for collectively manually operating a plurality of shutters (200) is configured to include: a shaft (5) which is rotatably held by a frame (11) of an electromagnetic operation device main body (10) for operating the shutter (200), and which is disposed so as to span a region in which a plurality of electromagnetic operation device main bodies (10) are arranged; a handle part (7) having a handle part (9) for rotating the shaft (5); a plurality of cams (6) which are attached to the shaft (5) in correspondence with each of the electromagnetic operating device main body sections (10); and a link member (3) which is provided between the shaft (5) and the movable shaft (1) of each electromagnetic operation device main body (10), is rotatably supported by a rotating shaft (3a) supported by a frame (11), has one end portion in contact with the cam (6) and the other end portion in contact with the movable shaft (1), rotates the shaft (5) in association with the opening operation of the handle portion (7), and simultaneously moves the plurality of movable shafts (1) via the cam (6) and the link member (3).)

1. An electromagnetic operation device including a manual operation unit for manually opening a plurality of shutters in a lump,

the manual operation portion includes:

a shaft rotatably held by a frame of an electromagnetic operation device main body portion that operates the shutter, and arranged so as to span a region in which the plurality of electromagnetic operation device main body portions are arranged;

a handle portion having a grip portion that rotationally operates the shaft;

a plurality of cams attached to the shaft corresponding to the plurality of electromagnetic operation device main bodies, respectively; and

a link member provided between the shaft and the movable shaft of each of the electromagnetic operating device main bodies and 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 thereof being in contact with the movable shaft,

the shafts are rotated in association with the opening operation of the handle portion, and the plurality of movable shafts are simultaneously moved via the cams and the link members.

2. The electromagnetic operating device according to claim 1,

the three-phase electromagnetic operation device main body portions are arranged along the axial direction of the shaft, and the three movable shafts provided in the electromagnetic operation device main body portions are arranged in parallel while being spaced from each other.

3. The electromagnetic operating device according to claim 1 or 2,

the handle portion includes one of the grip portions provided in parallel with the shaft and an arm portion connecting the shaft and the grip portion, and the grip portion is disposed in a state of being exposed on a front side of the electromagnetic operation device.

4. The electromagnetic operating device according to claim 3,

the grip portion of the handle portion is configured to be held on a front side of the shaft in a front surface of the electromagnetic operation device when closed, to be pressed downward at a start of disconnection, and to rotate about the shaft.

5. The electromagnetic operating device according to any one of claims 1 to 4,

the manual operation portion includes: a plunger having a pressing spring built therein and fixed to the frame; and a plunger cam which is interlocked with the plunger and is fixed to the shaft,

the plunger cam is configured such that, at an intermediate position of a rotation region at the time of the off operation of the shaft, a top portion of the plunger cam comes into contact with the plunger to compress the pressing spring.

Technical Field

The present invention relates to an electromagnetic operation device that operates, for example, a shutter.

Background

As a switch, there is a vacuum circuit breaker in which a movable contactor and a fixed contactor are built in a vacuum container, and the switch is operated by moving the movable contactor. The electromagnetic operation device for operating the shutter is configured to be capable of not only electromagnetic operation but also manual operation. In the case of performing the opening operation manually, for example, an operator rotates the rotary shaft to drive a lever fixed to the rotary shaft, and directly presses the movable shaft of the electromagnetic operation device with the lever to drive the lever. The rotating shaft is driven by a tool such as a wrench (see, for example, patent document 1).

Further, as a conventional opening/closing device, there is disclosed a structure in which a three-phase switch unit (a shutter) is collectively opened and closed, and a handle of another member is attached to a main shaft (a rotation shaft) at the time of manual operation, and a drive shaft (a movable shaft) is directly driven by a lever fixed to the main shaft (see, for example, patent document 2).

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 5901351

Patent document 2: japanese patent No. 4668165

Disclosure of Invention

Technical problem to be solved by the invention

In the electromagnetic operating device of patent document 1, a mechanism portion for manual operation is provided in a pair with the electromagnetic operating device. Therefore, if one switching device includes three-phase switches and electromagnetic operation devices are provided for the three phases individually, a phase-missing state may occur temporarily because manual operation is required for each phase when manual disconnection is performed.

Further, in the configurations of patent documents 1 and 2, since the movable shaft is directly driven by the joystick fixed to the rotary shaft, an operation torque sufficient to directly rotate the rotary shaft to which the joystick is fixed is required, and there is a problem in operability in that the operation torque increases due to an increase in the number of devices that collectively perform manual operation. Further, operability is also problematic in that the device side is not equipped with a handle or the like for manual operation.

The present application discloses a technique for solving the above-described problem, and an object thereof is to provide an electromagnetic operating device that can collectively perform manual operation on a plurality of shutters and that is excellent in operability.

Technical scheme for solving technical problem

The electromagnetic operation device disclosed in the present application includes a manual operation unit that manually performs an opening operation on a plurality of shutters in a lump, wherein the manual operation unit includes: a shaft rotatably held by a frame of an electromagnetic operation device main body portion that operates the shutter, and arranged so as to span a region in which the plurality of electromagnetic operation device main body portions are arranged; a handle portion having a grip portion for rotating the shaft; a plurality of cams attached to the shaft in correspondence with the respective plurality of electromagnetic operation device main bodies; and a link member that is provided between the shaft and the movable shaft of each of the electromagnetic operation device main bodies and is 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 thereof being in contact with the movable shaft, and that is configured to rotate the shaft in accordance with an opening operation of the handle portion and to simultaneously move the plurality of movable shafts via the cam and the link member.

Effects of the invention

According to the electromagnetic operation device disclosed in the present application, since the cam attached to the shaft is configured to move the movable shaft in conjunction with the link member, the design margin is increased by the amount of the number of parts interlocked with the shaft, as compared with a configuration in which one member for moving the movable shaft is directly attached to the shaft, adjustment of the operation torque required for manual operation is facilitated, and by manually operating the handle portion fixed to the shaft, the plurality of movable shafts can be collectively operated, and operability can be improved.

Drawings

Fig. 1 is a partial sectional view showing an outline of an electromagnetic operation device according to embodiment 1.

Fig. 2 is an enlarged side sectional view of the electromagnetic operating device.

Fig. 3 is a front view of the electromagnetic operation device according to embodiment 1.

Fig. 4 is an enlarged plan view of a main portion of the link member.

Fig. 5 is a perspective view of the electromagnetic operating device according to embodiment 1.

Fig. 6 is a side view showing the cam and link member.

Fig. 7 is a front view of the electromagnetic operation device according to embodiment 2.

Fig. 8 is a side sectional view taken along line B-B of fig. 7.

Detailed Description

Embodiment mode 1

An electromagnetic operation device 100 according to embodiment 1 of the present application will be described with reference to fig. 1 to 6.

Fig. 1 is a partial cross-sectional side view showing an electromagnetic operating device 100 according to embodiment 1, and is a diagram showing a connection relationship between the electromagnetic operating device 100 and a shutter 200 that is opened and closed by the electromagnetic operating device 100. Here, the shutter 200 is, for example, a vacuum circuit breaker, and the electromagnetic operation device 100 and the shutter 200 constitute a switching device.

The electromagnetic operation device 100 includes: an electromagnetically-operated device main body portion 10 that electromagnetically operates the shutter 200 when the power supply is available to the electromagnetically-operated device main body portion 10; and a manual operation unit 20, wherein the manual operation unit 20 is used for an operator to manually operate the shutter 200 in an emergency such as when power is lost. In fig. 1, the electromagnetic operation device main body 10 is disposed in the center, the shutter 200 is disposed on the right side, the manual operation portion 20 is disposed on the left side, and the movable shaft 1 is disposed so as to extend in the left-right direction so as to penetrate these members. The three-phase switches 200 are arranged in the depth side of fig. 1, and the left end face of fig. 1 is the front face of the electromagnetic operation device 100.

The shutter 200 is configured such that a movable contact 201 and a fixed contact 202 are butted against each other in the axial direction in a vacuum container, and the opening and closing are controlled by operating a movable shaft 1 connected to the movable contact 201 by an electromagnetic operating device main body 10 or a manual operating portion 20. In fig. 1, the structures of an insulating portion between the movable contact 201 and the electromagnetic operating device main body 10, a conductive portion connected to both contacts, and the like are not illustrated.

Fig. 2 is an enlarged side sectional view of the electromagnetic operation device 100, illustrating the structure of the electromagnetic operation device main body portion 10 that drives the movable shaft 1 by electromagnetic operation and the detailed structure of the manual operation portion 20 that manually drives the movable shaft 1. Fig. 2 corresponds to a side sectional view taken along line a-a of fig. 3, which will be described later.

The electromagnetic operation device main body 10 is a mechanism portion that performs an opening and closing operation of the shutter 200 during a normal operation, and includes a movable iron core 12 and a fixed iron core 13 inside two opposing plate-shaped frames 11 supported by a frame support portion 11b, the movable iron core 12 being fixed to the movable shaft 1 and configured to move in the axial direction by the opening and closing operation, and the fixed iron core 13 being fixed to the frame 11 and provided to face the movable iron core 12. When the movable iron core 12 is operated by the energized state of the coil 14, the movable iron core 12 moves in an opening direction (left side) shown by an arrow in fig. 1 in the case of shifting from the closed state to the open state, and the movable iron core 12 is away 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 moved in the opening direction (pull-out direction) by the spring member 30 provided at the end (left end) of the movable shaft 1 on the opposite side of the shutter 200, and the movable contact 201 of the shutter 200 is separated from the fixed contact 202 and becomes the open state. A spring presser 31 is disposed at an end of the movable shaft 1, and the spring presser 31 presses the spring member 30.

The manual operation unit 20 is a mechanism unit for switching the shutter 200 from the closed state to the open state by manual operation of an operator. 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 disposed, that is, at an end not connected to the shutter 200. The manual operation portion 20 is mainly composed of a link member 3, a rotary shaft 3a, a shaft support portion 4, a shaft 5, a cam 6, and a handle portion 7, wherein the link member 3 presses a flange 2 fixed to an outer peripheral portion of the movable shaft 1 in the axial direction, the rotary shaft 3a rotatably supports the link member 3, the shaft support portion 4 is supported by a frame 11, the shaft 5 is rotatably supported by the shaft support portion 4, the cam 6 is fixed to the shaft 5 and contacts the link member 3, and the handle portion 7 is formed of an arm portion 8 extending radially outward from the shaft 5 and a grip portion 9 attached to a radially outer end portion of the arm portion 8.

Further, the shaft 5 is disposed so as to span a region where the three-phase electromagnetic operating device main bodies 10 are arranged, and three cams are attached to one shaft 5 corresponding to each of the three-phase electromagnetic operating device main bodies 10.

The link member 3 is provided between the shaft 5 and the movable shaft 1 of each electromagnetic operating device main body portion 10, is rotatably supported by a rotary shaft 3a supported by the frame 11, and has one end portion in contact with the cam 6 and the other end portion in contact with the flange 2 fixed so as to be integrated with the movable shaft 1. The link member 3 is a member for transmitting the operation of the cam 6, and is formed to have a size corresponding to the distance between the shaft 5 and the movable shaft 1. In the example of fig. 2, the link member 3 is shown to be curved in a planar shape into a bow shape, a shape in which an end portion protrudes to the flange 2 and the cam 6 side, and to have a flat engaging surface with which the cam 6 is in contact.

The electromagnetic operation device 100 of the present application is configured to rotate the shaft 5 in accordance with the opening operation of the handle 7, and to simultaneously move the three-phase movable shafts 1 via the cams 6 and the link members 3, thereby manually performing the three-phase opening operation all at once.

Fig. 3 is a front view of the electromagnetic operating device 100 in the closed state as viewed 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 (left-right direction) of the shaft 5, and movable shafts 1 provided in the electromagnetic operating device main bodies 10 are arranged in parallel while being spaced apart from each other, and the movable shafts 1 are arranged apart from the shaft 5 so as to secure a certain distance for rotating the link member 3. In fig. 3, three movable shafts 1 extend in the depth direction, and one linear grip portion 9 of the handle portion 7 of the manual operation portion 20 is held parallel to the shaft 5 below the movable shafts 1.

In addition, in order to facilitate the handle operation by the operator, the grip portion 9 of the manual operation portion 20 is exposed and provided on the front surface side of the flat plate-shaped frame 11, and is held so as to protrude toward the front side of the operator when closed, thereby providing a layout with good operability.

For example, when the shutter 200 is closed, the handle portion 9 is held in a state of protruding toward the front side of the shaft 5, and therefore, the arm portion 8 extending in the radial direction of the shaft 5 is in a state of extending in the horizontal direction, and when the operation region of the opening operation is rotated by 90 degrees with the rotation angle of the shaft 5, at the time of the end of the opening operation, as shown by the broken line in fig. 1, the handle portion 9 is provided below the shaft 5, and the arm portion 8 is in a state of extending downward from the shaft 5.

Further, a stopper or the like (not shown) having a function of holding the position of the handle 7 may be provided so that the handle 7 does not move downward due to its own weight.

The handle portion 7 is adjusted to have a weight enough to suppress rotation due to its own weight. In the closed state, the movable shaft 1 is pushed toward the shutter 200 by the electromagnetic operating device body 10, and therefore the handle 7 is not naturally pivoted downward.

As shown in fig. 3, a rotary shaft 3a for rotatably holding the link member 3 is bridged between two frame base portions 11a fixed to the surface portion of the frame 11 across the movable shaft 1. The direction in which the axis of the rotary shaft 3a extends is orthogonal to the direction in which the axis of the movable shaft 1 extends, and the distance between the rotary 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 a main portion of the link member 3, and illustrates a planar shape of the link distal end portion 3b of the link member 3 as an engagement portion with the movable shaft 1. In the example of fig. 4, two link distal end portions 3b are arranged in parallel with the movable shaft 1 interposed therebetween at an end portion of the link member 3 on the side where the movable shaft 1 is driven. The end of the link tip 3b is configured to contact the end surface of the flange 2 fixed to the movable shaft 1 on the shutter 200 side, to pivot about the rotary shaft 3a as a fulcrum in association with the opening operation, and to press the end surface of the flange 2 to the side opposite to the shutter 200.

Fig. 5 is a perspective view of the electromagnetic operating device 100 when closed, viewed from the front side, in which the grip portion 9 of the handle portion 7 is disposed so as to be exposed to the front side, and the arm portions 8 are provided so as to connect the shaft 5 to both end portions of the grip portion 9. Since the handle portion 7 is provided integrally with the electromagnetic operating device 100, it is not necessary to attach a handle of another member before manual operation, and manual operation can be performed immediately in an emergency.

Further, since the shaft 5 is configured as a quadrangular frame body that connects both end portions of the handle portion 9 with the arm portion 8, the rotational state of the shaft 5 can be stabilized as compared with a case where a driving force is applied to only one end of the shaft 5. Further, since the handle portion 9 is provided to match the width of the three-phase device on which the shaft 5 is mounted, a sufficient length can be secured to allow the operator to naturally grasp the handle portion 9 with both hands during the closing operation. Further, at the start of the disconnection, since the operator grips the grip portion 9 and applies a downward force to start the rotation, the operator can perform the operation while applying the weight, and the operation torque necessary for collectively manually operating the three phases can be easily secured.

As described above, the electromagnetic operation device 100 of the present application has better operability than the conventional device in terms of manual operation by the manual operation unit 20.

Next, the operation of the cam 6 and the link member 3 in the disconnecting operation will be described with reference to fig. 6. Fig. 6 is an enlarged side view showing a state in which the cam 6 is interlocked with the link member 3.

In this example, the cam 6 is constituted by an egg-shaped plate cam having one top. The cam 6 has a base circle arranged coaxially with the shaft 5, and a 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 closed. When the shaft 5 is rotated counterclockwise by 90 degrees by the disconnecting operation, the cam 6 shown by the broken line in fig. 6 is rotated to a position where the top portion 6a thereof faces rightward, and the top portion 6a is in a state of protruding toward the shutter 200 side in the axial direction of the movable shaft 1. Accordingly, the link member 3 rotates counterclockwise about the rotation shaft 3a (fulcrum), one end (lower end) of the link member 3 is pressed by the top portion 6a toward the shutter 200 side (right side) in the axial direction, and the other end (upper end) of the link member 3 is pressed toward the opposite side (left side) of the shutter 200 in the axial direction of the movable shaft 1, whereby the movable shaft 1 is driven in the opening direction.

Further, since the cams 6 attached to the shaft 5 are provided for the three shutters 200, respectively, the three cams 6 are attached to the shaft 5 separately from each other corresponding to the movable shaft 1, and the three cams 6 are arranged in the same shape and in the same direction.

Further, by setting the distance from the shaft 5 to the top portion 6a (action point) of the cam 6 to be smaller than the distance from the grip portion 9 (force point) of the handle portion 7 to the shaft 5 (fulcrum), the cam 6 can be driven with a smaller operation torque by utilizing the principle of leverage.

Here, the rotary shaft 3a serving as a fulcrum of the link member 3 is disposed between the movable shaft 1 and the shaft 5. The rotation shaft 3a may be provided at a midpoint on a line connecting one end (force 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 may be provided at a position other than the midpoint. For example, in the link member 3, the distance between the force point and the fulcrum (the rotation shaft 3a) is adjusted to be larger than the distance between the fulcrum and the action point, and the movable shaft 1 can be moved in the opening direction with a smaller operation torque by using the principle of leverage. Conversely, by adjusting the distance between the force point and the fulcrum to be smaller than the distance between the fulcrum and the action point, the manual operation unit 20 can move the movable shaft 1 to a larger extent by performing the disconnecting operation of the movable shaft 1.

In this way, the link member 3 is a member whose shape and arrangement can be determined with high design margin in accordance with 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, and the like. Further, the electromagnetic operating device 100 of the present invention including the cam 6 and the link member 3 as described above has a design margin higher than a structure in which a member for moving the movable shaft 1 (a lever in the related art) is directly attached to the shaft 5, and therefore, it is possible to collectively perform manual operation of three phases within a range of an operation torque that can be secured in an emergency, and it is possible to adjust the shapes of the cam 6 and the link member 3, thereby improving operability as compared with the conventional one.

Embodiment mode 2

Next, an electromagnetic operation device 100 according to embodiment 2 of the present application will be described with reference to fig. 7 and 8.

Fig. 7 is a front view of the electromagnetic operating device 100 in the closed state as viewed from the front side, and the plunger 40 is fixed to the outer surface of the frame 11 at a position of the right end of the shaft 5, and the plunger cam 41 is attached to the shaft 5 so as to contact the plunger 40. Fig. 8 shows a side sectional view along the line B-B of fig. 7.

As shown in fig. 8, the plunger 40 has a pressing spring 40a built therein, and is configured to apply a contact pressure to the plunger cam 41 while compressing the spring 40a by contacting the plunger cam 41. The plunger cam 41 can be formed of the same shape as the cam 6, and the orientation of the plunger cam 41 can be adjusted so that the contact pressure at the time in the middle of the opening operation becomes maximum.

As in the case of embodiment 1, the rotation region at the time of the opening operation of the shaft 5 is 90 degrees, the plunger cam 41 is attached to the shaft 5 in such a manner that, when the handle 7 is rotated counterclockwise from the clock position 9 point to 6 points, the rotation region of the apex portion 6a of the cam 6 interlocked with the handle 7 and the shaft 5 is changed from the clock position 6 point to 3 points, and the rotation region of the apex portion of the plunger cam 41 is shifted by, for example, 45 degrees in the counterclockwise direction with respect to the cam 6.

In the electromagnetic operation device 100 according to embodiment 2, since the apex portion of the plunger cam 41 is configured to contact the plunger 40 and compress the pressing spring 40a at the intermediate position of the rotation region at the time of the opening operation of the shaft 5, the apex portion of the plunger cam 41 in the rotation region of the shaft 5 exceeds the latter half of the plunger 40, and the contact pressure of the pressing spring 40a built in the plunger 40 biases the plunger cam 41 to assist the opening operation. This makes it easy to collectively perform the manual opening operation of the three-phase shutter 20, not only depending on the operation force applied by the operator of the handle portion 7.

Further, since the contact pressure of the plunger 40 is the largest at the intermediate position of the rotation region of the shaft 5, it is possible to suppress the movable shaft 1 that is temporarily in the open state from returning to the closed state, and to stably hold the open state.

Further, in the first half of the rotation region of the shaft 5, the contact pressure applied by the plunger 40 gradually increases as the opening operation proceeds, and therefore, at the start of the opening operation, a force that attempts to return the handle portion 7 to the original closed state is applied. Thus, even if a load is erroneously applied to the handle 7, the plunger 40 acts to maintain the closed state, and malfunction can be prevented.

In this way, by applying a strong or weak 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.

Further, although the present application describes exemplary embodiments, various features, aspects, and functions described in the embodiments are not limited to the specific embodiments, and can be applied to the embodiments alone or in various combinations.

Therefore, countless modifications not illustrated are assumed to be within the technical scope disclosed in the present application. For example, the case where at least one component is modified, the case where at least one component is added, or the case where at least one component is omitted is included.

Description of the symbols

1, a movable shaft; 2, a flange; 3a link member; 3a rotating shaft; 3b connecting rod front end; 4 a shaft support; 5, an axis; 6, a cam; 6a top part; 7 a handle portion; 8 arm parts; 9 a handle part; 10 an electromagnetically operated device main body portion; 11a frame; 11a frame base part; 11b a frame support; 12 a movable iron core; 13 fixing the iron core; 14 coils; 20 a manual operation part; 30 a spring member; 31 a spring pressing plate; 40 plunger piston; 40a pressing spring; 41 a cam for plunger; 100 an electromagnetically operated device; 200 a shutter; 201 a movable contact; 202 hold the contacts.