WO2012169346A1 - Switch and switch gear - Google Patents
Switch and switch gear Download PDFInfo
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- WO2012169346A1 WO2012169346A1 PCT/JP2012/063109 JP2012063109W WO2012169346A1 WO 2012169346 A1 WO2012169346 A1 WO 2012169346A1 JP 2012063109 W JP2012063109 W JP 2012063109W WO 2012169346 A1 WO2012169346 A1 WO 2012169346A1
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- WO
- WIPO (PCT)
- Prior art keywords
- guide
- switch
- movable
- operating
- operating rod
- Prior art date
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/42—Driving mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H33/6664—Operating arrangements with pivoting movable contact structure
Definitions
- the present invention relates to a switch and a switch gear, and more particularly to a guide mechanism for an operating rod of a movable electrode in the switch.
- a switch having a fixed electrode and a movable electrode is provided with a guide for guiding the driving direction so that the movable electrode can properly contact the fixed electrode.
- a convex is formed on the electrode surface due to local welding to a part of the electrode at the time of breaking, and the electrode surface is not horizontal after breaking There is. Therefore, at the time of the next injection after the interruption, the movable electrode connected to the operation rod is aligned with the convexity of the electrode surface in order to ensure a current-carrying area (contact area) even if the convexity remains on the electrode surface.
- a guide needs to be formed to tilt.
- the operating rod is suspended from the operating device at the breaking position, etc., away from the fixed contact.
- the force applied to the operating rod is only in the driving direction, but in reality, a force other than the driving direction due to the positional deviation or dimensional error of the operating device link mechanism is applied to the operating rod. Is held tilted.
- the guide since the guide is directed in the driving direction, the operating rod is caught by the inner peripheral end portion of the guide, and stress is concentrated at the hooked portion. In order to prevent stress concentration on the guide due to this catch, it is necessary for the guide to allow the tilt of the operating rod and absorb these forces.
- the guide allows the tilt of the operation rod when the movable electrode is stationary.
- the guide guides the operating rod straight in the driving direction when the movable electrode operates.
- Patent Document 1 As a conventional guide mechanism, there is one described in Patent Document 1, for example.
- Patent Document 1 means for allowing misalignment is provided between the guide portion and the operation rod. According to Patent Document 1, it is possible to generate an equal contact force with respect to the two contact points constituting the two-point cut by allowing the operation rod to be misaligned.
- the tilt of the operating rod is allowed, but the distance for guiding the operating rod is short. Therefore, when the stroke length for moving the movable electrode becomes longer, it is necessary to lengthen the guide in the axial direction in order to increase the distance for guiding the operation rod. On the other hand, if the guide is lengthened in the axial direction, an angle for tilting the operation rod cannot be obtained, and it is difficult to tilt this time.
- the present invention has been made in view of the above points, and an object of the present invention is to provide a switch or the like that guides the operating rod over a long distance and allows tilting at rest.
- a switch includes a fixed electrode, a movable electrode facing and separating from the fixed electrode, an operating device for generating an operating force for operating the movable electrode, An operating rod that transmits the operating force from the operating device to the movable electrode, and a guide that contacts the operating rod and guides the operating rod so that the driving operation of the operating rod is along the drive axis direction.
- FIG. 1 It is a side view of the switch in Example 1. It is a figure explaining the guide mechanism in Example 1, and shows an injection state. The side view and side sectional view of a fixed guide in Example 1 are shown. The side view and sectional side view of the movable guide 6e in Example 1 are shown. It is a figure which shows the movable conductor 5 which attached the stopper in Example 1. FIG. It is the figure which looked at the movable conductor 5 in Example 1 from the axial direction. It is a figure explaining the procedure which assembles the guide mechanism in Example 1. FIG. It is a figure which shows the transient state at the time of the drive of the movable conductor 5 in Example 1. FIG. It is a figure explaining the guide mechanism in Example 1, and shows the interruption
- Example 3 It is a figure explaining the inclination at the time of injection in Example 1.
- FIG. It is a figure explaining the inclination at the time of interruption
- FIG. It is a figure explaining the guide mechanism in Example 2.
- FIG. It is a side view of the switchgear in Example 3.
- Example 1 will be described with reference to FIGS.
- the switch according to the present embodiment is roughly constituted by a vacuum vessel 1, an operation mechanism 14, and a link mechanism 16 that couples both.
- the vacuum vessel 1 is composed of an insulating cylinder 2 and an end plate 17, and a guide holding portion 6 d is fixed to an opening at the top of the end plate 17 via a fixing bracket 7.
- a fixed electrode 4 and a movable electrode 3 facing the fixed electrode 4 are arranged, and the movable electrode 3 is a movable conductor (also operating rod) 5 reinforced with a metal that is not annealed at a high temperature such as stainless steel.
- the fixed electrode 4 is fixed to the tip of the fixed conductor 18, respectively.
- the movable conductor 5 is led out of the vacuum vessel 1 and is connected to the link mechanism 16 by the operation pin 8.
- the switch described in the present embodiment is a two-position type switch for closing and closing (or disconnection, grounding, etc.), and switches each position by driving a movable electrode.
- the link mechanism 16 includes a connection portion 19 connected to the movable conductor 5 by an operation pin 8 and an insulating operation rod that is connected to the connection portion 19 and insulates the high voltage on the main circuit side from being applied to the operation device side.
- a lever connecting portion 10 and a connecting portion 20 that connect the insulating operating rod 9 and the operating lever 11, a shaft 12 that is disposed in the middle of the operating lever 11 and serves as a rotation axis of the operating lever 11, and the operating lever 11
- the connecting rod 13 is connected to the other end of the lever connecting portion 10, and the connecting portion 21 connects the connecting rod 13 and the operation mechanism 14.
- the operation mechanism 14 generates an operation force for driving the movable electrode 3 by an electromagnet or the like.
- the movable electrode 3 is stopped at a closing (closed) position for energization by the clockwise or counterclockwise rotation of the operating lever 11 by the operating mechanism 14, and the current is cut off at a position closer to the operating device than the closed position. Stopped at the disconnection (open) position for stopping or at the position closer to the controller side than this open position, and stopped at the disconnection position or grounding position to ensure the safety of the inspection operator against surge voltage such as lightning Is done.
- the guide portion includes the guide pressing portion 6d, which is the above-described fixing member, the movable guide 6e, and stoppers 5a and 5b that are fixed to the movable conductor 5 at both ends in the axial direction of the movable guide 6e. It consists of.
- the movable conductor 5 is guided by the movable guide 6e when the movable contact is moved, so that the outer peripheral length 5-wi of the movable conductor 5 is approximately the same as the minimum inner peripheral length 6-wi of the movable guide 6e, and It is provided to be slightly smaller.
- the movable guide 6e is in sliding contact with the inner diameter side of the guide pressing portion 6d when passing through the inside of the guide pressing portion 6d.
- the inner diameter of the guide pressing portion 6d is formed to be smaller than the maximum value of the outer diameter of the movable guide 6e and larger than the minimum value.
- FIG. 3 shows the guide pressing portion 6d.
- the inner diameter of the guide pressing portion 6d is a uniform length in the axial direction, and a wide portion 6f having a wide outer diameter is formed so that the fixing bracket 7 is not removed.
- the fixing bracket 7 is disposed between the wide portion 6 f and the end plate 17, and fixes the guide pressing portion 6 d to the vacuum vessel 1.
- FIG. 4 shows the movable guide 6e.
- the movable guide 6e is provided with a plurality of cuts equally in the circumferential direction from both ends in the axial direction of the movable guide 6e toward the center in the axial direction, and a piece that is divided on the end side is opened (like a petal). It has become.
- a plurality of notches are provided when the 180 ° back side on the side where the notch is provided cannot be properly opened and is not pressed by the guide pressing portion 6d. This is because a space for allowing inclination cannot be provided.
- the notch is evenly provided, the force is applied from any direction (that is, tilted in any direction). This is because it can be inserted and removed.
- the notch is not provided in the central portion in the axial direction, and the movable guide 6e is not completely separated but is composed of one member.
- the portion having the cut on the axial end side is referred to as the movable guide first regions 6a and 6b, and the portion having no cut in the central portion in the axial direction is referred to as the second region 6c.
- the movable guide 6e is made of an elastic member (for example, a stainless steel material for a spring), and the divided pieces function like a leaf spring, and are open in a natural state where no force is applied. That is, the outer peripheral lengths of the movable guide first regions 6a and 6b are formed so as to change to different peripheral lengths depending on whether or not they are in sliding contact with the guide pressing portion 6d.
- the outer peripheral lengths 6a-wo and 6b-wo are formed so as to gradually spread from the movable guide second region 6c to the movable guide both ends first regions 6a and 6b.
- the outer peripheral length is represented by the outer diameter of the movable guide. Further, the diameter may be compared instead of the circumference.
- the thickness of the movable guide 6e is not constant. As a result, the force pressed by the guide pressing portion 6d is weak (except for the portion where the thickness is maximum) (becomes supported at a point when viewed from the axial direction), and the movable guide 6e is positioned inside the guide pressing portion 6d. In this case, the inclination described later is easily made.
- the thickness of the movable guide 6e is maximized from the axial center of the movable guide 6e in a state of being held by the guide holding portion 6d so that the guide holding portion 6d can slide (smoothly) without colliding with the movable guide 6e.
- the inclination of the outer diameter in the range up to the position becomes 0 ° in any part when the axis in the driving direction of the movable conductor 5 (the movable electrode 3 side when turned on, the actuator side when cut off) is 0 °.
- the angle is less than 90 °.
- FIG. 5 shows the state of the stoppers 5a and 5b which are located at both ends of the movable guide 6e and are fixed to the movable conductor 5.
- the movable guide 6e is not fixed to the movable conductor 5, one or more stoppers are provided, and the outer peripheral lengths 5b-wo (5a-wo) of the stoppers 5a and 5b at both ends as shown in FIG. Is larger than the maximum value of the outer peripheral length of both ends of the movable guide in the axial direction, the movable guide 6e is supported by being sandwiched between the stoppers 5a and 5b at both ends without falling off. Thereby, the movable guide 6e can be driven in the axial direction together with the movable conductor 5 while being sandwiched between the stoppers 5a and 5b in accordance with the drive of the movable conductor 5.
- FIG. 6 shows how the stoppers 5a and 5b are fixed (FIG. 6 (b)) and when they are not fixed (FIG. 6 (a)) as viewed from both ends in the axial direction. Yes.
- the stoppers 5a and 5b are not fixed (FIG. 6A)
- the first region 6a of the movable guide 6e is located inside the guide pressing portion 6d
- the first region of the movable guide 6e is located inside the guide pressing portion 6d
- the plurality of cuts in 6a are in a closed state.
- the second region 6b of the movable guide 6e not located inside the guide pressing portion 6d is in a state opened from a plurality of cuts.
- Fig. 7 shows the procedure for assembling the guide section.
- the movable guide 6e which is composed of an elastic member or the like and has a piece that is equally divided into a plurality in the circumferential direction, is brought into sliding contact with the inner periphery of the guide pressing portion 6d.
- the guide pressing portion 6d in which the movable guide 6e is slidably contacted from the direction in which the stopper is not provided is inserted into the movable conductor 5 provided with the stopper 5b (or 5a) at one place on the outer periphery of the movable conductor 5. .
- a stopper 5 a is provided on the outer periphery of the movable conductor 5 on the side where the guide pressing portion 6 d is inserted, and the guide pressing portion 6 d is fixed to the end plate 17 of the vacuum vessel 1 with a fixing bracket 7 such as a bolt.
- the stoppers 5a and 5b are formed in a ring shape from a material such as austenitic stainless steel, and a screw structure (not shown) is formed on the inner periphery of the ring.
- the screw structure and a screw structure (not shown) formed on the outer periphery of the movable conductor are fixed to the outer periphery of the movable conductor.
- the switch configured as described above will be described with reference to FIG. 2 and FIGS. First, a mechanism for guiding the movable conductor 5 during operation will be described.
- FIG. 2 shows the state of the movable conductor 5 and the guide portion when in the closing state. From this state, a transitional state is passed as shown in FIG. 8, and finally a transition is made to a cutoff state as shown in FIG. To do.
- the guide distance L, l 1 , l 2 in FIG.
- the movable electrode 3 side ( l 2 ) and the operation mechanism 14 side (l 1 ) may be the same length, but a three-position type switch (for example, “turning on, breaking, disconnecting” of the disconnecting disconnection part) )),
- the guide distance (l 2 ) on the movable electrode side is longer than the guide distance (l 1 ) on the operating device side, and the tilt is also applied when the actuator is stopped in a shut-off state. It is necessary to make the movable electrode 3 side (l 2 ) of the movable guide 6e longer than the operation mechanism 14 side (l 1 ).
- the transition to the shut-off state is finally made via the transient state, and at this time, only the portion on the movable electrode 3 side of the movable guide 6e is located in the guide pressing portion 6d. It is. Therefore, movable guide 6e, the inner peripheral that is in contact with the movable conductor 5 (at the time of stop) at the same time, is only part of the movable electrode side and its length is l 2.
- the portion where the inner peripheral side is in contact with the movable conductor 5 serves as a guide function for guiding the driving direction of the movable conductor 5, so that the distance that the movable guide 6e can guide after all is the movable guide 6e.
- the inner circumference is not L 1 or l 2 which is in contact with the movable conductor 5 at the same time, but L of the entire length.
- the movable guide 6e is changed in the contact portion, so that the movable conductor 6e has a movable conductor 6e whose inner periphery is longer than l 1 and l 2 that are in contact with the movable conductor 5 at the same time. 5 can be guided.
- FIG. 10 shows the inclination in the input state.
- the movable guide 6e In the throwing state, the movable guide 6e has its inner circumference simultaneously in contact with the movable conductor 5 only at the portion on the operating device side, and since the movable electrode 3 side is open, the movable conductor 5 is inclined. An angle can be secured (it is allowed to incline within the range indicated by S in FIG. 10B). Therefore, the convexity remains on the electrode surface due to local welding to a part of the electrode, so that the electrode is disconnected after being cut off. Even when the horizontal state is lost, the movable conductor 5 can be tilted, so that a contact area can be secured.
- the movable guide 6e is formed of an elastic member, and the entire surface of the movable guide 6e that contacts the movable conductor 5 can be inclined, the catch itself can be prevented, and the stress concentration can be further reduced. Thereby, the gap between the movable conductor 5 on the operating device side and the guide pressing portion 6d can be minimized, and it is possible to suppress the generation of local contact pressure due to catching at the next disconnection.
- FIG. 11 shows the inclination in the shut-off state.
- the movable guide 6e has its inner periphery simultaneously in contact with the movable conductor 5 only at the movable electrode 3 side, and since the operating device side is open, the movable conductor 5 is inclined. An angle can be secured (inclination within a range indicated by S in FIG. 11B is allowed). Therefore, the movable conductor 5 is suspended from the operating device, and the movable conductor 5 is allowed to be held in an inclined state by applying a force to the movable conductor 5 other than the driving direction due to the positional deviation or dimensional error of the link mechanism. Thus, stress concentration can be prevented.
- the movable guide 6e is formed of an elastic member, and the entire surface of the movable guide 6e that contacts the movable conductor 5 can be inclined, the catch itself can be prevented, and the stress concentration can be further reduced. As a result, the gap between the movable conductor 5 on the operating device side and the guide pressing portion 6d can be minimized, and it is possible to suppress the generation of local contact pressure due to catching at the next charging.
- the guide pressing portion 6d is fixed (with respect to the vacuum vessel 1), but is not necessarily fixed for achieving the effects of the invention.
- the movable guide 6e may be allowed to move relatively in the axial direction.
- Example 2 will be described with reference to FIG. In addition, about the location which overlaps with Example 1, the description is abbreviate
- the second region 26 c at the center of the movable guide 6 e is lengthened and the second region 26 c is fixed to the movable conductor 5.
- the second region 26c of the movable guide is fixed to the movable conductor 5 by, for example, a convex screw structure (not shown) formed at the center of the inner periphery of the second region 26c of the movable guide and a screw formed at the outer periphery of the movable conductor.
- a convex screw structure not shown
- the movable electrode 3 and the fixed electrode 4 are disposed in the vacuum vessel 1 having a vacuum inside, and the switch is a vacuum-insulated switch. It is not limited and it is possible to use any insulated switch. In particular, when an air-insulated switch is used, the stroke distance becomes longer and the guiding distance becomes longer, so it is beneficial to use the above-described guide.
- Example 3 will be described with reference to FIG. In the present embodiment, an example in which the switch described in the first embodiment is applied to a switch gear will be described.
- the fixed conductor 18 is connected to a cable 15 that supplies power to the load side.
- the movable conductor 5 has a flexible conductor 30 disposed in the depth direction of the drawing, and the flexible conductor 30 is connected to the busbar side.
- the vacuum container 1 of the switch is housed in a resin container (solid insulator) whose surface is at ground potential.
- a solid insulator (resin container) whose surface is at ground potential is disposed around the fixed electrode and the movable electrode. These are housed in the housing 31.
- the present invention is not limited to the first to third embodiments described above, and includes various modifications.
- the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described.
- a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment.
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The purpose of the present invention is to provide a switch and the like that guides an operating rod over a long distance and permits inclination when motionless. In order to solve the problem described above, the switch in the present invention is provided, for example, with: a fixed electrode (4); a movable electrode (3) that faces the fixed electrode (4) and contacts and separates therefrom; an operating instrument (14) that generates an operating force that operates the movable electrode (3); an operating rod (5) that transfers the operating force from the operating instrument (14) to the movable electrode (3); and a guide (6e) that is in contact with the operating rod (5) and guides the operating rod (5) such that an operating rod (5) drive operation is along the direction of a drive shaft. The switch is characterized by the guide (6e) guiding the operating rod (5) over a distance longer than the length in the axial direction of the guide (6e) itself, which is in contact with the operating rod (5), at the same time.
Description
本発明は、開閉器及びスイッチギヤに関するものであり、特に開閉器における可動電極の操作ロッドのガイド機構に関する。
The present invention relates to a switch and a switch gear, and more particularly to a guide mechanism for an operating rod of a movable electrode in the switch.
固定電極及び可動電極を有する開閉器は、可動電極が固定電極に対して適切に接触できる様に、駆動方向を案内するガイドを設ける。
A switch having a fixed electrode and a movable electrode is provided with a guide for guiding the driving direction so that the movable electrode can properly contact the fixed electrode.
遮断器などの投入遮断を繰り返す1点切り以上の開閉器においては、遮断時に電極の一部への局所溶着により、電極表面に凸が形成され、遮断後には電極表面が水平状態ではなくなる可能性がある。故に、遮断後の次の投入時においては、電極表面に凸が残っていても通電面積(接触面積)を確保するために、操作ロッドと連結されている可動電極が電極表面の凸に合わせて傾けるようにガイドが形成される必要がある。
In a switch with one-point cutting or more that repeatedly turns on and off, such as a circuit breaker, there is a possibility that a convex is formed on the electrode surface due to local welding to a part of the electrode at the time of breaking, and the electrode surface is not horizontal after breaking There is. Therefore, at the time of the next injection after the interruption, the movable electrode connected to the operation rod is aligned with the convexity of the electrode surface in order to ensure a current-carrying area (contact area) even if the convexity remains on the electrode surface. A guide needs to be formed to tilt.
また、固定接点と離れている遮断位置等では操作ロッドが操作装置に懸架された状態になる。この際、操作ロッドに印加する力が駆動方向のみであれば問題はないが、実際には操作装置リンク機構の位置ずれや寸法誤差に起因する駆動方向以外の力が操作ロッドに加わり、操作ロッドは傾いた状態で保持される。この場合、ガイドは駆動方向を向いていることから、操作ロッドがガイドの内周端部に引っかかり、引っかかった部位で応力が集中してしまう。この引っかかりによるガイドへの応力集中を防ぐためには、ガイドが操作ロッドの傾きを許容して、これらの力を吸収する必要がある。
In addition, the operating rod is suspended from the operating device at the breaking position, etc., away from the fixed contact. At this time, there is no problem as long as the force applied to the operating rod is only in the driving direction, but in reality, a force other than the driving direction due to the positional deviation or dimensional error of the operating device link mechanism is applied to the operating rod. Is held tilted. In this case, since the guide is directed in the driving direction, the operating rod is caught by the inner peripheral end portion of the guide, and stress is concentrated at the hooked portion. In order to prevent stress concentration on the guide due to this catch, it is necessary for the guide to allow the tilt of the operating rod and absorb these forces.
故に、ガイドは可動電極の静止時には、操作ロッドの傾きを許容することが望まれる。
Therefore, it is desirable that the guide allows the tilt of the operation rod when the movable electrode is stationary.
一方で、操作ロッドが傾いた状態で投入および遮断等の動作を行うと、ガイド内周端部に操作ロッドとの局所的な接触圧力が加わり、ガイドの破損に至る可能性がある。加えて、操作ロッドへの操作力として、局部的な接触圧力に打ち勝つために、大きな操作力が必要になるため、操作装置の大型化にも繋がる。
On the other hand, if an operation such as closing and closing is performed while the operating rod is tilted, a local contact pressure with the operating rod is applied to the inner peripheral end of the guide, which may cause the guide to break. In addition, a large operating force is required to overcome the local contact pressure as the operating force to the operating rod, leading to an increase in the size of the operating device.
故に、ガイドは可動電極の動作時には、操作ロッドを駆動方向に真っ直ぐ案内することが望まれる。
Therefore, it is desirable that the guide guides the operating rod straight in the driving direction when the movable electrode operates.
ここで、従来のガイド機構に関するものとして、例えば特許文献1に記載されたものがある。該特許文献1では、ガイド部と操作ロッドとの間に芯ずれを許容する手段を設けている。該特許文献1によれば、操作ロッドの芯ずれを許容することにより、2点切りを構成する2つの接点に対して均等な接触力を発生させることが可能になる。
Here, as a conventional guide mechanism, there is one described in Patent Document 1, for example. In Patent Document 1, means for allowing misalignment is provided between the guide portion and the operation rod. According to Patent Document 1, it is possible to generate an equal contact force with respect to the two contact points constituting the two-point cut by allowing the operation rod to be misaligned.
上述した特許文献1に記載された内容によれば、操作ロッドの傾きは許容されるが、操作ロッドを案内する距離が短い。故に、可動電極が動作するストローク長が長くなった場合には、操作ロッドを案内する距離を長くするべく、ガイドを軸方向に長くする必要がある。一方、ガイドを軸方向に長くしてしまうと、操作ロッドが傾くための角度が得られなくなり、今度は傾くことが困難となる。
According to the contents described in Patent Document 1 described above, the tilt of the operating rod is allowed, but the distance for guiding the operating rod is short. Therefore, when the stroke length for moving the movable electrode becomes longer, it is necessary to lengthen the guide in the axial direction in order to increase the distance for guiding the operation rod. On the other hand, if the guide is lengthened in the axial direction, an angle for tilting the operation rod cannot be obtained, and it is difficult to tilt this time.
本発明では、上記の点を鑑みなされたものであって、長い距離にわたって操作ロッドを案内し、かつ静止時における傾きを許容する開閉器等を提供することを目的とする。
The present invention has been made in view of the above points, and an object of the present invention is to provide a switch or the like that guides the operating rod over a long distance and allows tilting at rest.
上記の課題を解決するために、本発明に係る開閉器は、固定電極と、該固定電極と対向して接離する可動電極と、該可動電極を操作する操作力を発生させる操作器と、該操作器からの前記操作力を前記可動電極に伝達する操作ロッドと、該操作ロッドに接触し、該操作ロッドの駆動動作が駆動軸方向に沿うように該操作ロッドを案内するガイドとを備える開閉器であって、前記ガイドが同時に前記操作ロッドに接する該ガイド自身の軸方向長さよりも長い距離にわたって、前記操作ロッドを案内することを特徴とする。
In order to solve the above problems, a switch according to the present invention includes a fixed electrode, a movable electrode facing and separating from the fixed electrode, an operating device for generating an operating force for operating the movable electrode, An operating rod that transmits the operating force from the operating device to the movable electrode, and a guide that contacts the operating rod and guides the operating rod so that the driving operation of the operating rod is along the drive axis direction. A switch, wherein the guide guides the operating rod over a distance longer than the axial length of the guide itself simultaneously contacting the operating rod.
本発明によれば、長い距離にわたって操作ロッドを案内し、かつ静止時における傾きを許容する開閉器等を提供することが可能になる。
According to the present invention, it is possible to provide a switch or the like that guides the operating rod over a long distance and permits tilting when stationary.
上記した以外の課題、構成及び効果は、以下の実施形態の説明により明らかにされる。
Issues, configurations, and effects other than those described above will be clarified by the following description of the embodiments.
以下、本発明を実施する上で好適となる実施例について図面を用いて説明する。尚、下記は実施の例であって、本発明の内容を下記態様に限定することを意図したものでない。本発明は、特許請求の範囲の記載によって規定され、かかる内容を満たす上で、種々の態様に変形することが可能である。
Hereinafter, embodiments suitable for carrying out the present invention will be described with reference to the drawings. The following are examples, and are not intended to limit the content of the present invention to the following embodiments. The present invention is defined by the description of the scope of claims, and can be modified into various modes in order to satisfy such contents.
実施例1について図1ないし図11を用いて説明する。
Example 1 will be described with reference to FIGS.
図1に示す様に、本実施例に係る開閉器は、真空容器1と、操作機構14と、両者を連結するリンク機構16とから概略構成される。
As shown in FIG. 1, the switch according to the present embodiment is roughly constituted by a vacuum vessel 1, an operation mechanism 14, and a link mechanism 16 that couples both.
真空容器1は、絶縁筒2と端板17とから構成され、該端板17の上部の開口に、固定金具7を介してガイド押さえ部6dが固定されている。真空容器1の内部には、固定電極4及び固定電極4に対向する可動電極3が配置され、該可動電極3はステンレスなどの高温で焼鈍されない金属で補強された可動導体(兼操作ロッド)5の先端に固定され、固定電極4は固定導体18の先端にそれぞれ固定されている。可動導体5は真空容器1外に導出され、操作ピン8により、リンク機構16と接続されている。本実施例で説明する開閉器は投入⇔遮断(または断路,接地等)の2位置型開閉器であり、可動電極の駆動により、各位置を切り替える。
The vacuum vessel 1 is composed of an insulating cylinder 2 and an end plate 17, and a guide holding portion 6 d is fixed to an opening at the top of the end plate 17 via a fixing bracket 7. Inside the vacuum vessel 1, a fixed electrode 4 and a movable electrode 3 facing the fixed electrode 4 are arranged, and the movable electrode 3 is a movable conductor (also operating rod) 5 reinforced with a metal that is not annealed at a high temperature such as stainless steel. The fixed electrode 4 is fixed to the tip of the fixed conductor 18, respectively. The movable conductor 5 is led out of the vacuum vessel 1 and is connected to the link mechanism 16 by the operation pin 8. The switch described in the present embodiment is a two-position type switch for closing and closing (or disconnection, grounding, etc.), and switches each position by driving a movable electrode.
リンク機構16は、操作ピン8によって可動導体5に接続される接続部19と、該接続部19に接続されて、主回路側の高電圧が操作器側に印加しない様に絶縁する絶縁操作ロッド9と、該絶縁操作ロッド9と操作レバー11とを連結するレバー連結部10及び接続部20と、操作レバー11の中間に配置されて操作レバー11の回転軸となるシャフト12と、操作レバー11のレバー連結部10との他端に連結される連結ロッド13と、連結ロッド13と操作機構14とを接続する接続部21とから構成される。
The link mechanism 16 includes a connection portion 19 connected to the movable conductor 5 by an operation pin 8 and an insulating operation rod that is connected to the connection portion 19 and insulates the high voltage on the main circuit side from being applied to the operation device side. 9, a lever connecting portion 10 and a connecting portion 20 that connect the insulating operating rod 9 and the operating lever 11, a shaft 12 that is disposed in the middle of the operating lever 11 and serves as a rotation axis of the operating lever 11, and the operating lever 11 The connecting rod 13 is connected to the other end of the lever connecting portion 10, and the connecting portion 21 connects the connecting rod 13 and the operation mechanism 14.
操作機構14は、可動電極3を駆動させる操作力を電磁石等により発生させる。
The operation mechanism 14 generates an operation force for driving the movable electrode 3 by an electromagnet or the like.
可動電極3は、操作機構14による操作レバー11の時計回りまたは反時計回りの回動によって、通電するための投入(閉)位置、この閉位置より操作器側の位置にて停止され電流を遮断するための遮断(開)位置、またはこの開位置より更に操作器側の位置にて停止され雷などのサージ電圧に対して点検作業者の安全を確保するための断路位置や接地位置に停止保持される。
The movable electrode 3 is stopped at a closing (closed) position for energization by the clockwise or counterclockwise rotation of the operating lever 11 by the operating mechanism 14, and the current is cut off at a position closer to the operating device than the closed position. Stopped at the disconnection (open) position for stopping or at the position closer to the controller side than this open position, and stopped at the disconnection position or grounding position to ensure the safety of the inspection operator against surge voltage such as lightning Is done.
図2ないし図7を用いて、ガイド部の構造について説明する。図2に示す様に、ガイド部は、上述した固定部材であるガイド押さえ部6dと、可動ガイド6eと、可動ガイド6eの軸方向両端に可動導体5に固定されて配置されるストッパ5a,5bとから構成される。可動導体5は、可動接点の移動時に可動ガイド6eに案内される様、可動導体5の外周長さ5-wiは可動ガイド6eの最小内周長さ6-wiとほぼ同程度であり、かつ、若干小さくなる様に設けている。可動ガイド6eは、ガイド押さえ部6dの内部を通過する際にガイド押さえ部6dの内径側と摺接する。係る機構を実現するべく、ガイド押さえ部6dの内径は可動ガイド6eの外径の最大値より小さく、かつ最小値より大きく形成される様にしている。
The structure of the guide portion will be described with reference to FIGS. As shown in FIG. 2, the guide portion includes the guide pressing portion 6d, which is the above-described fixing member, the movable guide 6e, and stoppers 5a and 5b that are fixed to the movable conductor 5 at both ends in the axial direction of the movable guide 6e. It consists of. The movable conductor 5 is guided by the movable guide 6e when the movable contact is moved, so that the outer peripheral length 5-wi of the movable conductor 5 is approximately the same as the minimum inner peripheral length 6-wi of the movable guide 6e, and It is provided to be slightly smaller. The movable guide 6e is in sliding contact with the inner diameter side of the guide pressing portion 6d when passing through the inside of the guide pressing portion 6d. In order to realize such a mechanism, the inner diameter of the guide pressing portion 6d is formed to be smaller than the maximum value of the outer diameter of the movable guide 6e and larger than the minimum value.
図3にはガイド押さえ部6dを示している。ガイド押さえ部6dの内径は軸方向に一律の長さとなっており、固定金具7が外れない様、外径が幅広となっている幅広部6fを形成している。固定金具7は幅広部6fと端板17の間に配置され、ガイド押さえ部6dを真空容器1に対して固定する。
FIG. 3 shows the guide pressing portion 6d. The inner diameter of the guide pressing portion 6d is a uniform length in the axial direction, and a wide portion 6f having a wide outer diameter is formed so that the fixing bracket 7 is not removed. The fixing bracket 7 is disposed between the wide portion 6 f and the end plate 17, and fixes the guide pressing portion 6 d to the vacuum vessel 1.
図4には可動ガイド6eを示している。可動ガイド6eには、可動ガイド6eの軸方向両端部から軸方向中心に向かって周方向に均等に複数の切れ込みを設け、端部側は各々分割された片が(花びらの様に)開く構造となっている。ここで、複数としているのは仮に、切れ込みを一つしか設けない場合、切れ込みを設けた側の180°裏側では、適切に開くことができずに、ガイド押さえ部6dに押さえられていない際にも傾きを許容するための空間を設けることができないからである。均等としたのは、均等に切れ込みが設けてある方が、いずれの方向から力が印加されて(即ち、いずれかの方向に傾いて)いる場合にも同じ様にガイド押さえ部6dに対して抜き差しできるからである。
FIG. 4 shows the movable guide 6e. The movable guide 6e is provided with a plurality of cuts equally in the circumferential direction from both ends in the axial direction of the movable guide 6e toward the center in the axial direction, and a piece that is divided on the end side is opened (like a petal). It has become. Here, if there is only one notch, a plurality of notches are provided when the 180 ° back side on the side where the notch is provided cannot be properly opened and is not pressed by the guide pressing portion 6d. This is because a space for allowing inclination cannot be provided. Evenly, when the notch is evenly provided, the force is applied from any direction (that is, tilted in any direction). This is because it can be inserted and removed.
切れ込みは軸方向中心部には設けられておらず、可動ガイド6eは完全には分離されずに一つの部材から構成されている。以降、軸方向端部側の切れ込みを有する部位を可動ガイド第一領域6a,6bと呼び、軸方向中央部の切れ込みを有しない部位を第二領域6cと呼ぶ。可動ガイド6eは弾性部材(例えばバネ用ステンレス材)から構成されて、分割された片が板バネのように機能し、何ら力が印加されない自然状態では、開いた状態となっている。即ち、可動ガイド第一領域6a,6bの外周長さはガイド押さえ部6dに摺接する場合と摺接しない場合で異なる周長さに変化するように形成されている。
The notch is not provided in the central portion in the axial direction, and the movable guide 6e is not completely separated but is composed of one member. Hereinafter, the portion having the cut on the axial end side is referred to as the movable guide first regions 6a and 6b, and the portion having no cut in the central portion in the axial direction is referred to as the second region 6c. The movable guide 6e is made of an elastic member (for example, a stainless steel material for a spring), and the divided pieces function like a leaf spring, and are open in a natural state where no force is applied. That is, the outer peripheral lengths of the movable guide first regions 6a and 6b are formed so as to change to different peripheral lengths depending on whether or not they are in sliding contact with the guide pressing portion 6d.
そして、図2に示す様にそれぞれの外周長さ6a-woおよび6b-woが、可動ガイド第二領域6cから可動ガイド両端部第一領域6a,6bまで徐々に広がる形状に形成する。なお、図面では、図示の都合上、外周長さを可動ガイドの外径で表している。また、周長さに代えて径で比較するようにしても良い。そして、ガイド押さえ部6dの内部に押さえられている際には、可動ガイド6eは閉じ、その内周側が可動導体5に接し、ガイド機能を果たす。
Then, as shown in FIG. 2, the outer peripheral lengths 6a-wo and 6b-wo are formed so as to gradually spread from the movable guide second region 6c to the movable guide both ends first regions 6a and 6b. In the drawings, for the convenience of illustration, the outer peripheral length is represented by the outer diameter of the movable guide. Further, the diameter may be compared instead of the circumference. When the guide is held inside the guide pressing portion 6d, the movable guide 6e is closed, and the inner peripheral side thereof is in contact with the movable conductor 5 to perform a guide function.
可動ガイド6eについて、その厚みは一定でない。これにより、厚みが最大の部分を除いてはガイド押さえ部6dに押さえられる力が弱く(軸方向から見て点で支持されるようになり)、ガイド押さえ部6dの内部に可動ガイド6eが位置する場合にも、後述する傾きをし易くなる。
The thickness of the movable guide 6e is not constant. As a result, the force pressed by the guide pressing portion 6d is weak (except for the portion where the thickness is maximum) (becomes supported at a point when viewed from the axial direction), and the movable guide 6e is positioned inside the guide pressing portion 6d. In this case, the inclination described later is easily made.
また可動ガイド6eに対してガイド押さえ部6dが、衝突せずに(滑らかに)スライドできる様、ガイド押さえ部6dで押さえられた状態における可動ガイド6eの軸方向中心から可動ガイド6eの厚みが最大となる位置までの範囲における外径の傾きは、可動導体5の駆動方向(投入時なら可動電極3側、遮断時なら操作器側)における軸を0°とした時、いずれの部位でも0°以上90°未満になる様にしている。
Further, the thickness of the movable guide 6e is maximized from the axial center of the movable guide 6e in a state of being held by the guide holding portion 6d so that the guide holding portion 6d can slide (smoothly) without colliding with the movable guide 6e. The inclination of the outer diameter in the range up to the position becomes 0 ° in any part when the axis in the driving direction of the movable conductor 5 (the movable electrode 3 side when turned on, the actuator side when cut off) is 0 °. The angle is less than 90 °.
図5では可動ガイド6eの両端に位置し、可動導体5に固定されるストッパ5a,5bの様子を示している。本実施例において可動ガイド6eは可動導体5に対して固定されていないものの、ストッパを1箇所以上設け、図2に示す様に両端のストッパ5a,5bの外周長さ5b-wo(5a-woは省略)を、可動ガイドの軸方向両端部の外周長さの最大値より大きく形成することで、可動ガイド6eは抜け落ちることなく、両端のストッパ5a,5bに挟みこんで支持される。これにより、可動ガイド6eは、可動導体5の駆動に応じてストッパ5a,5bに挟まれた状態で可動導体5と共に軸方向に駆動することが可能となる。
FIG. 5 shows the state of the stoppers 5a and 5b which are located at both ends of the movable guide 6e and are fixed to the movable conductor 5. In this embodiment, although the movable guide 6e is not fixed to the movable conductor 5, one or more stoppers are provided, and the outer peripheral lengths 5b-wo (5a-wo) of the stoppers 5a and 5b at both ends as shown in FIG. Is larger than the maximum value of the outer peripheral length of both ends of the movable guide in the axial direction, the movable guide 6e is supported by being sandwiched between the stoppers 5a and 5b at both ends without falling off. Thereby, the movable guide 6e can be driven in the axial direction together with the movable conductor 5 while being sandwiched between the stoppers 5a and 5b in accordance with the drive of the movable conductor 5.
図6ではストッパ5a,5bを固定する場合(図6の(b))と固定しない場合(図6の(a))のそれぞれの投入状態について、軸方向の両端側から見た様子を示している。ストッパ5a,5bを固定しない場合の図(図6の(a))からわかる様に、可動ガイド6eの第一領域6aがガイド押さえ部6dの内部に位置する場合、可動ガイド6eの第一領域6aの複数の切れ込みは閉じられた状態にある。一方、ガイド押さえ部6dの内部に位置しない可動ガイド6eの第二領域6bは、複数の切れ込みから開いた状態にある。これにより、ガイド押さえ部6dの内部に可動ガイド6eの第一領域6aまたは第二領域6bが位置する場合としない場合で、第一領域6aや第二領域6bがガイド機能を果たす場合と果たさない場合に切り替わることが分かる。
FIG. 6 shows how the stoppers 5a and 5b are fixed (FIG. 6 (b)) and when they are not fixed (FIG. 6 (a)) as viewed from both ends in the axial direction. Yes. As can be seen from the figure when the stoppers 5a and 5b are not fixed (FIG. 6A), when the first region 6a of the movable guide 6e is located inside the guide pressing portion 6d, the first region of the movable guide 6e. The plurality of cuts in 6a are in a closed state. On the other hand, the second region 6b of the movable guide 6e not located inside the guide pressing portion 6d is in a state opened from a plurality of cuts. Thereby, the case where the first region 6a or the second region 6b of the movable guide 6e is located inside the guide pressing portion 6d and the case where the first region 6a and the second region 6b perform the guide function are not satisfied. It turns out that it switches in case.
図7にはガイド部の組み立て手順を示している。まずはガイド押さえ部6dの内周に、弾性部材等から構成され、周方向に均等で複数に分割された片を有する可動ガイド6eを摺接させる。その後、可動導体5の外周の1箇所にストッパ5b(5aでも良い)を設けた可動導体5に対して、ストッパを設けていない方向から可動ガイド6eを摺接させたガイド押さえ部6dを挿入させる。最後に可動導体5のガイド押さえ部6dを挿入させた側の外周にストッパ5aを設け、真空容器1の端板17にガイド押さえ部6dをボルト等の固定金具7で固定させる。尚、ストッパ5a,5bは、例えばオーステナイト系ステンレス材などの材料でリング状に形成され、そして、リング状の内周にネジ構造(図示省略)が形成されており、このリング状の内周のネジ構造と、可動導体外周に形成されているネジ構造(図示省略)とにより可動導体外周に固定されるようになっている。
Fig. 7 shows the procedure for assembling the guide section. First, the movable guide 6e, which is composed of an elastic member or the like and has a piece that is equally divided into a plurality in the circumferential direction, is brought into sliding contact with the inner periphery of the guide pressing portion 6d. Thereafter, the guide pressing portion 6d in which the movable guide 6e is slidably contacted from the direction in which the stopper is not provided is inserted into the movable conductor 5 provided with the stopper 5b (or 5a) at one place on the outer periphery of the movable conductor 5. . Finally, a stopper 5 a is provided on the outer periphery of the movable conductor 5 on the side where the guide pressing portion 6 d is inserted, and the guide pressing portion 6 d is fixed to the end plate 17 of the vacuum vessel 1 with a fixing bracket 7 such as a bolt. The stoppers 5a and 5b are formed in a ring shape from a material such as austenitic stainless steel, and a screw structure (not shown) is formed on the inner periphery of the ring. The screw structure and a screw structure (not shown) formed on the outer periphery of the movable conductor are fixed to the outer periphery of the movable conductor.
上記の様に構成された開閉器について、図2及び図8ないし図11を用いて説明する。まず、可動導体5の動作時において案内する機構について説明する。
The switch configured as described above will be described with reference to FIG. 2 and FIGS. First, a mechanism for guiding the movable conductor 5 during operation will be described.
図2は、投入状態にある時の可動導体5及びガイド部の様子を示しており、この状態から図8に示す様に過渡状態を経て、最終的に図9に示す様に遮断状態に移行する。本実施例では、投入⇔遮断(又は断路,接地等)の2位置の場合について説明しており、可動ガイド6eのガイド距離(図2におけるL,l1,l2)は可動電極3側(l2)と操作機構14側(l1)で同じ長さで良いが、3位置型開閉器(例えば、遮断断路部の「投入、遮断、断路」や接地断路部の「投入、断路、接地」)に適用する場合にあっては、可動電極側におけるガイド距離(l2)が、操作器側のガイド距離(l1)よりも長くしつつ、遮断状態で停止している場合にも傾きを許容できる様に、可動ガイド6eの可動電極3側(l2)は操作機構14側(l1)と比較して長くしておく必要がある。
FIG. 2 shows the state of the movable conductor 5 and the guide portion when in the closing state. From this state, a transitional state is passed as shown in FIG. 8, and finally a transition is made to a cutoff state as shown in FIG. To do. In the present embodiment, the case of two positions of closing dredging interruption (or disconnection, grounding, etc.) has been described, and the guide distance (L, l 1 , l 2 in FIG. 2) of the movable guide 6e is the movable electrode 3 side ( l 2 ) and the operation mechanism 14 side (l 1 ) may be the same length, but a three-position type switch (for example, “turning on, breaking, disconnecting” of the disconnecting disconnection part) )), The guide distance (l 2 ) on the movable electrode side is longer than the guide distance (l 1 ) on the operating device side, and the tilt is also applied when the actuator is stopped in a shut-off state. It is necessary to make the movable electrode 3 side (l 2 ) of the movable guide 6e longer than the operation mechanism 14 side (l 1 ).
投入状態の際、ガイド押さえ部6d内に位置しているのは、可動ガイド6eのうちで、操作器側の部分のみである。故に、可動ガイド6eで、その内周が可動導体5に(停止時において)同時に接しているのは、操作器側の部分のみであり、その長さはl1である。
In the inserted state, only the portion on the operating unit side of the movable guide 6e is located in the guide pressing portion 6d. Therefore, movable guide 6e, the inner peripheral that is in contact with the movable conductor 5 (at the time of stop) at the same time, is only part of the operating-side and its length is l 1.
この状態から、遮断状態に向かうに際して図8に示す様な過渡状態を経由する。尚、この過渡状態は説明のために記載したものであって、実際に停止することを表したものではない。この過渡状態においては、ガイド押さえ部6d内に操作器側及び可動電極3側の一部も位置する。故に、可動ガイド6eのうち、その内周が可動導体5に接しているのは、上述した操作器側の部分に加えて、可動電極3側の部分も該当する。即ち、この時は可動ガイド6eの軸方向全長L(より正確には1/cosθ等を積算する必要があるが、本明細書中では開いた時と閉じた時の長さの変化分は煩雑となるのを防ぐため、省略して記載する。)が可動導体5に接している。
From this state, when going to the shut-off state, it goes through a transient state as shown in FIG. This transient state is described for the sake of explanation, and does not indicate that the vehicle actually stops. In this transient state, part of the operating device side and the movable electrode 3 side is also located in the guide pressing portion 6d. Therefore, in the movable guide 6e, the inner periphery of the movable guide 6e is in contact with the movable conductor 5 as well as the portion on the movable electrode 3 side in addition to the above-described portion on the operating device side. That is, at this time, it is necessary to add up the total axial length L of the movable guide 6e (more precisely, 1 / cos θ, etc., but in this specification, the change in length when opened and closed is complicated. In order to prevent this, the description is omitted.) Is in contact with the movable conductor 5.
過渡状態を経由して、最終的に遮断状態に移行して停止するが、この際、ガイド押さえ部6d内に位置しているのは、可動ガイド6eのうちで、可動電極3側の部分のみである。故に、可動ガイド6eで、その内周が可動導体5に(停止時において)同時に接しているのは、可動電極側の部分のみであり、その長さはl2である。
The transition to the shut-off state is finally made via the transient state, and at this time, only the portion on the movable electrode 3 side of the movable guide 6e is located in the guide pressing portion 6d. It is. Therefore, movable guide 6e, the inner peripheral that is in contact with the movable conductor 5 (at the time of stop) at the same time, is only part of the movable electrode side and its length is l 2.
可動ガイド6eのうちで、内周側が可動導体5に接している部分が可動導体5の駆動方向を案内するガイド機能を果たすので、結局のところ可動ガイド6eがガイドし得る距離は、可動ガイド6eで、その内周が可動導体5に同時に接しているl1やl2でなく、全長のLとなる。上述の様に、可動ガイド6eが接触する部位が変化していくことで、可動ガイド6eで、その内周が可動導体5に同時に接しているl1やl2よりも長い距離にわたって、可動導体5をガイドすることが可能となる。
Of the movable guide 6e, the portion where the inner peripheral side is in contact with the movable conductor 5 serves as a guide function for guiding the driving direction of the movable conductor 5, so that the distance that the movable guide 6e can guide after all is the movable guide 6e. Thus, the inner circumference is not L 1 or l 2 which is in contact with the movable conductor 5 at the same time, but L of the entire length. As described above, the movable guide 6e is changed in the contact portion, so that the movable conductor 6e has a movable conductor 6e whose inner periphery is longer than l 1 and l 2 that are in contact with the movable conductor 5 at the same time. 5 can be guided.
次に、可動ガイド6eが静止時において、傾きを許容することについて図10及び図11を用いて説明する。
Next, it will be described with reference to FIGS. 10 and 11 that the movable guide 6e is allowed to tilt when it is stationary.
図10の(b)は投入状態における傾きを示している。投入状態において可動ガイド6eで、その内周が可動導体5に同時に接しているのは、操作器側の部分のみであり、可動電極3側は開いていることから、可動導体5が傾くための角度を確保することができ(図10の(b)にSで示す範囲で傾くことを許容)、故に電極の一部への局所溶着によって電極表面に凸が残ることにより、遮断後には電極が水平状態ではなくなった場合にも、可動導体5が傾くことが可能になる結果、接触面積を確保することができる様になる。
(B) of FIG. 10 shows the inclination in the input state. In the throwing state, the movable guide 6e has its inner circumference simultaneously in contact with the movable conductor 5 only at the portion on the operating device side, and since the movable electrode 3 side is open, the movable conductor 5 is inclined. An angle can be secured (it is allowed to incline within the range indicated by S in FIG. 10B). Therefore, the convexity remains on the electrode surface due to local welding to a part of the electrode, so that the electrode is disconnected after being cut off. Even when the horizontal state is lost, the movable conductor 5 can be tilted, so that a contact area can be secured.
また、本実施例では、可動ガイド6eは弾性部材で形成されており、可動ガイド6eは可動導体5と接触する面全体が傾くことができ、引っかかり自体も防止でき、一層応力集中を緩和できる。これにより、操作装置側の可動導体5とガイド押さえ部6dとの間のギャップを最小限にでき、次の遮断時に引っかかりによる局部的な接触圧力の発生を抑えることが可能になる。
Further, in this embodiment, the movable guide 6e is formed of an elastic member, and the entire surface of the movable guide 6e that contacts the movable conductor 5 can be inclined, the catch itself can be prevented, and the stress concentration can be further reduced. Thereby, the gap between the movable conductor 5 on the operating device side and the guide pressing portion 6d can be minimized, and it is possible to suppress the generation of local contact pressure due to catching at the next disconnection.
図11の(b)は遮断状態における傾きを示している。遮断状態において可動ガイド6eで、その内周が可動導体5に同時に接しているのは、可動電極3側の部分のみであり、操作器側は開いていることから、可動導体5が傾くための角度を確保することができる(図11の(b)にSで示す範囲で傾くことを許容)。故に可動導体5が操作器に懸架され、リンク機構の位置ずれや寸法誤差に起因する駆動方向以外の力が可動導体5に加わることで、可動導体5が傾いた状態で保持されることが許容され、応力集中を防ぐことができる。
(B) of FIG. 11 shows the inclination in the shut-off state. In the cut-off state, the movable guide 6e has its inner periphery simultaneously in contact with the movable conductor 5 only at the movable electrode 3 side, and since the operating device side is open, the movable conductor 5 is inclined. An angle can be secured (inclination within a range indicated by S in FIG. 11B is allowed). Therefore, the movable conductor 5 is suspended from the operating device, and the movable conductor 5 is allowed to be held in an inclined state by applying a force to the movable conductor 5 other than the driving direction due to the positional deviation or dimensional error of the link mechanism. Thus, stress concentration can be prevented.
また、本実施例では、可動ガイド6eは弾性部材で形成されており、可動ガイド6eは可動導体5と接触する面全体が傾くことができ、引っかかり自体も防止でき、一層応力集中を緩和できる。これにより、操作装置側の可動導体5とガイド押さえ部6dとの間のギャップを最小限にでき、次の投入時に引っかかりによる局部的な接触圧力の発生を抑えることが可能になる。
Further, in this embodiment, the movable guide 6e is formed of an elastic member, and the entire surface of the movable guide 6e that contacts the movable conductor 5 can be inclined, the catch itself can be prevented, and the stress concentration can be further reduced. As a result, the gap between the movable conductor 5 on the operating device side and the guide pressing portion 6d can be minimized, and it is possible to suppress the generation of local contact pressure due to catching at the next charging.
本実施例では、ガイド押さえ部6dは(真空容器1に対して)固定されているが、発明の効果を奏する上では固定されていることを必須とはせず、ガイド押さえ部6dに対して、可動ガイド6eが軸方向に相対的に動作することを許容すれば良い。
In the present embodiment, the guide pressing portion 6d is fixed (with respect to the vacuum vessel 1), but is not necessarily fixed for achieving the effects of the invention. The movable guide 6e may be allowed to move relatively in the axial direction.
実施例2について図12を用いて説明する。尚、実施例1と重複する箇所については、その説明を省略する。本実施例では、ストッパ5a,5bを用いる代わりに、可動ガイド6e中央部の第二領域26cを長くし、該第二領域26cを可動導体5に固定している。可動ガイドの第二領域26cの可動導体5への固定は、例えば、可動ガイドの第二領域26cの内周中央部に形成した凸のネジ構造(図示省略)と、可動導体外周に形成したネジ構造(図示省略)とにより行う。
Example 2 will be described with reference to FIG. In addition, about the location which overlaps with Example 1, the description is abbreviate | omitted. In this embodiment, instead of using the stoppers 5 a and 5 b, the second region 26 c at the center of the movable guide 6 e is lengthened and the second region 26 c is fixed to the movable conductor 5. For example, the second region 26c of the movable guide is fixed to the movable conductor 5 by, for example, a convex screw structure (not shown) formed at the center of the inner periphery of the second region 26c of the movable guide and a screw formed at the outer periphery of the movable conductor. Depending on the structure (not shown).
切れ込みのない第二領域を固定する分には、上述した実施例1の機構を実現する上での支障はなく、同様の効果を得ることは可能である。これにより、ガイドする対象である可動導体5自身に可動ガイド6eを装着する機構が実現される。
Securing the second region without a cut does not hinder the realization of the mechanism of the first embodiment, and the same effect can be obtained. Thereby, a mechanism for mounting the movable guide 6e on the movable conductor 5 itself to be guided is realized.
加えて、本機構によればストッパが不要になり、部品点数が削減できるという効果も奏する。
In addition, according to this mechanism, there is no need for a stopper, and the number of parts can be reduced.
尚、上述の各実施例では、可動電極3及び固定電極4は内部が真空である真空容器1内に配置されており、開閉器は真空絶縁された開閉器であったが、無論真空絶縁に限定されるものではなく、いずれの絶縁開閉器も用いることが考えられる。特に、気中絶縁開閉器を用いる場合には、ストローク距離が長くなり、案内する距離も長くなるので、上述したガイドを用いることは有益である。
In each of the above-described embodiments, the movable electrode 3 and the fixed electrode 4 are disposed in the vacuum vessel 1 having a vacuum inside, and the switch is a vacuum-insulated switch. It is not limited and it is possible to use any insulated switch. In particular, when an air-insulated switch is used, the stroke distance becomes longer and the guiding distance becomes longer, so it is beneficial to use the above-described guide.
実施例3について図13を用いて説明する。本実施例では、実施例1で説明した開閉器をスイッチギヤに適用した例について説明する。
Example 3 will be described with reference to FIG. In the present embodiment, an example in which the switch described in the first embodiment is applied to a switch gear will be described.
固定導体18は負荷側に電力を供給するケーブル15に接続される。可動導体5は図面奥行き方向にフレキシブル導体30を配置しており、該フレキシブル導体30は母線側と接続される。開閉器の真空容器1は表面が接地電位とされる樹脂容器(固体絶縁物)に収容されている。言い換えれば、表面が接地電位とされる固体絶縁物(樹脂容器)が固定電極及び可動電極の周囲に配置されている。そして、これらは筺体31内に収納されている。
The fixed conductor 18 is connected to a cable 15 that supplies power to the load side. The movable conductor 5 has a flexible conductor 30 disposed in the depth direction of the drawing, and the flexible conductor 30 is connected to the busbar side. The vacuum container 1 of the switch is housed in a resin container (solid insulator) whose surface is at ground potential. In other words, a solid insulator (resin container) whose surface is at ground potential is disposed around the fixed electrode and the movable electrode. These are housed in the housing 31.
本実施例で説明する様に、上述した開閉器をスイッチギヤに適用することは無論可能であり、ここで説明したスイッチギヤに捉われず種々のスイッチギヤに対して適用することが可能である。尚、本実施例では一例として実施例1で説明した開閉器を用いることについて説明したが、無論実施例2で説明した開閉器を含め、本発明を実現し得る種々の開閉器を適用することが可能である。
As described in this embodiment, it is possible to apply the above-described switch to a switch gear, and it is possible to apply to various switch gears without being limited to the switch gear described here. . In addition, although the present Example demonstrated using the switch demonstrated in Example 1 as an example, of course, applying the various switches which can implement | achieve this invention including the switch demonstrated in Example 2 is applied. Is possible.
本発明は上記した実施例1~3に限定されるものではなく、様々な変形例が含まれる。例えば、上記した実施例は本発明を分かりやすく説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、ある実施例の構成の一部を他の実施例の構成に置き換えることが可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部について、他の構成の追加,削除,置換をすることが可能である。
The present invention is not limited to the first to third embodiments described above, and includes various modifications. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Moreover, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.
1 真空容器,2 絶縁筒,3 可動電極,4 固定電極,5 可動導体(操作ロッド),6a,6b 第一領域,6c,26c 第二領域,6d ガイド押さえ部,6e 可動ガイド,6f 幅広部,7 固定金具,8 操作ピン,9 絶縁操作ロッド,10 レバー連結部,11 操作レバー,12 シャフト,13 連結ロッド,14 操作機構,15 ケーブル,16 リンク機構,17 端板,18 固定導体,19,20,21 接続部,30 フレキシブル導体,31 筺体
1 vacuum vessel, 2 insulating cylinder, 3 movable electrode, 4 fixed electrode, 5 movable conductor (operating rod), 6a, 6b first area, 6c, 26c second area, 6d guide holding part, 6e movable guide, 6f wide part , 7 Fixing bracket, 8 Operation pin, 9 Insulating operation rod, 10 Lever connection part, 11 Operation lever, 12 Shaft, 13 Connection rod, 14 Operation mechanism, 15 Cable, 16 Link mechanism, 17 End plate, 18 Fixed conductor, 19 , 20, 21 connection part, 30 flexible conductor, 31 housing
Claims (14)
- 固定電極と、
該固定電極と対向して接離する可動電極と、
該可動電極を操作する操作力を発生させる操作器と、
該操作器からの前記操作力を前記可動電極に伝達する操作ロッドと、
該操作ロッドに接触し、該操作ロッドの駆動動作が駆動軸方向に沿うように該操作ロッドを案内するガイドとを備える開閉器であって、
前記ガイドが同時に前記操作ロッドに接する該ガイド自身の軸方向長さよりも長い距離にわたって、前記操作ロッドを案内することを特徴とする開閉器。 A fixed electrode;
A movable electrode facing and separating from the fixed electrode;
An operating device for generating an operating force for operating the movable electrode;
An operating rod for transmitting the operating force from the operating device to the movable electrode;
A switch that includes a guide that contacts the operation rod and guides the operation rod so that a drive operation of the operation rod is along a drive axis direction;
A switch that guides the operating rod over a distance that is longer than the axial length of the guide itself that contacts the operating rod at the same time. - 請求項1に記載の開閉器であって、
前記ガイドは前記操作ロッドに対する接触部位が前記操作ロッドの駆動動作に伴い変化するガイドであり、
該ガイドは前記操作ロッドに対する接触部位が変化することにより、該ガイドが同時に前記操作ロッドに接する該ガイド自身の軸方向長さよりも長い距離にわたって、前記操作ロッドを案内することを特徴とする開閉器。 The switch according to claim 1,
The guide is a guide in which a contact portion with respect to the operation rod changes with a drive operation of the operation rod,
The switch is configured to guide the operating rod over a distance longer than an axial length of the guide itself, which is in contact with the operating rod at the same time, by changing a contact portion with the operating rod. . - 請求項1または2に記載の開閉器であって、
前記ガイドは可動電極側におけるガイド距離が、操作器側のガイド距離よりも長く、
前記可動電極は、前記固定電極に対して3位置に移動することを特徴とする開閉器。 The switch according to claim 1 or 2,
The guide has a guide distance on the movable electrode side that is longer than a guide distance on the operating device side,
The switch is characterized in that the movable electrode moves to three positions with respect to the fixed electrode. - 請求項1ないし3の何れかに記載の開閉器であって、
さらに内部を前記ガイドが通過すると共に、該ガイドが内部を通過する際に該ガイドと摺接するガイド押さえ部材を備えており、
該ガイド押さえ部材の内径は前記ガイドの外径の最大値より小さく、かつ最小値より大きく形成されると共に、
該ガイド押さえ部材に対して、前記ガイドは軸方向に相対的に動作することを特徴とする開閉器。 The switch according to any one of claims 1 to 3,
Furthermore, the guide passes through the inside, and when the guide passes through the inside, a guide pressing member that comes into sliding contact with the guide is provided.
The inner diameter of the guide pressing member is formed smaller than the maximum value of the outer diameter of the guide and larger than the minimum value,
The switch, wherein the guide moves relative to the guide pressing member in the axial direction. - 請求項4に記載の開閉器であって、
前記ガイドの厚みは一定でないことを特徴とする開閉器。 The switch according to claim 4,
A switch according to claim 1, wherein the thickness of the guide is not constant. - 請求項5に記載の開閉器であって、
前記ガイド押さえ部材と前記ガイドが摺接する際には、
前記ガイドの軸方向中心から、前記ガイド押さえ部材の内部であって前記ガイドの外径が最大の位置までの範囲における該ガイドの外径の傾きは、
いずれの部位でも、前記操作ロッドの駆動方向における軸を0°とした時、0°以上90°未満であることを特徴とする開閉器。 The switch according to claim 5,
When the guide pressing member and the guide are in sliding contact,
The inclination of the outer diameter of the guide in the range from the center in the axial direction of the guide to the position where the outer diameter of the guide is the maximum inside the guide pressing member is:
In any part, when the axis in the drive direction of the operating rod is 0 °, the switch is 0 ° or more and less than 90 °. - 請求項1ないし6のいずれか一つに記載の開閉器であって、
前記ガイドは弾性部材からなることを特徴とする開閉器。 The switch according to any one of claims 1 to 6,
The switch is characterized in that the guide is made of an elastic member. - 請求項1ないし7のいずれか一つに記載の開閉器であって、
前記ガイドは軸方向端部から軸方向中心に向かって複数の切れ込みを有していることを特徴とする開閉器。 The switch according to any one of claims 1 to 7,
The switch is characterized in that the guide has a plurality of cuts from the axial end toward the axial center. - 請求項8に記載の開閉器であって
前記複数の切れ込みは、前記ガイドの周方向に均等に配置されていることを特徴とする開閉器。 The switch according to claim 8, wherein the plurality of cuts are evenly arranged in a circumferential direction of the guide. - 請求項1ないし9のいずれか一つに記載の開閉器であって、
前記操作ロッドにおける前記ガイドの軸方向両端には、前記ガイドが前記操作ロッドから抜け外れることを防止するストッパが配置されることを特徴とする開閉器。 The switch according to any one of claims 1 to 9,
A switch that is provided with stoppers that prevent the guide from coming off the operating rod at both ends in the axial direction of the guide in the operating rod. - 請求項1ないし9のいずれか一つに記載の開閉器であって、
前記ガイドの軸方向中央部は、前記操作ロッドに固定されていることを特徴とする開閉器。 The switch according to any one of claims 1 to 9,
The switch according to claim 1, wherein an axially central portion of the guide is fixed to the operation rod. - 請求項1ないし11のいずれか一つに記載の開閉器であって、
前記開閉器は気中絶縁開閉器であることを特徴とする開閉器。 The switch according to any one of claims 1 to 11,
The switch is an air insulated switch. - 請求項1ないし11いずれか一つに記載の開閉器であって、
前記固定電極及び前記可動電極は内部が真空である真空容器内に配置されており、
前記開閉器は真空絶縁開閉器であることを特徴とする開閉器。 The switch according to any one of claims 1 to 11,
The fixed electrode and the movable electrode are arranged in a vacuum container having a vacuum inside,
The switch is a vacuum insulated switch. - 請求項12または13に記載の開閉器と、前記固定電極及び前記可動電極の周囲に配置されて表面が接地電位とされる固体絶縁物と、
系統側に接続されて前記開閉器に電力を供給する母線と、前記開閉器ユニット内の開閉器からの電力を負荷側に供給するケーブルと、これらを一体に内部に収納する筺体とを備えることを特徴とするスイッチギヤ。 The switch according to claim 12 or 13, and a solid insulator disposed around the fixed electrode and the movable electrode and having a surface at a ground potential,
A busbar connected to the system side for supplying power to the switch, a cable for supplying power from the switch in the switch unit to the load side, and a housing for housing them integrally. Switch gear characterized by
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JPS516868B1 (en) * | 1970-03-05 | 1976-03-02 | ||
JPS5344272U (en) * | 1976-09-20 | 1978-04-15 | ||
JPH06231660A (en) * | 1993-02-02 | 1994-08-19 | Toshiba Corp | Switch gear |
JP2006324177A (en) * | 2005-05-20 | 2006-11-30 | Toshiba Corp | Vacuum valve |
JP2011054504A (en) * | 2009-09-04 | 2011-03-17 | Toshiba Corp | Vacuum valve and tap switching device for gas insulation load |
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JP4271250B2 (en) * | 2007-07-30 | 2009-06-03 | 株式会社日立製作所 | Vacuum insulation switch and vacuum insulation switchgear |
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JPS516868B1 (en) * | 1970-03-05 | 1976-03-02 | ||
JPS5344272U (en) * | 1976-09-20 | 1978-04-15 | ||
JPH06231660A (en) * | 1993-02-02 | 1994-08-19 | Toshiba Corp | Switch gear |
JP2006324177A (en) * | 2005-05-20 | 2006-11-30 | Toshiba Corp | Vacuum valve |
JP2011054504A (en) * | 2009-09-04 | 2011-03-17 | Toshiba Corp | Vacuum valve and tap switching device for gas insulation load |
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