JP5606289B2 - Switch state detection device and method of mounting the state detection device - Google Patents

Description

  Embodiments described herein relate generally to a switch state detection device for detecting an operation state of a contact of a switch and a method for attaching the state detection device.

  In general, the contact of the switch is provided in the insulating gas in the switch body, and the rotation control unit is connected to the main axis of the switch that is exposed from the switch body to the outside air. The contact is opened or closed by controlling the rotation by a predetermined angle in the direction. In such a switch, a measuring device has been proposed in which a rotary encoder as a measuring means is attached to the end face of the main shaft to measure the rotation angle of the main shaft (see, for example, Patent Document 1).

JP-A-9-147655

  However, since the above-described prior art is equipped with a measuring device for disassembling the switch and measuring the operation state of the contact, it is easy for users who do not have expertise in disassembling and assembling the switch. The measuring device cannot be attached to or removed from the instrument. Also, if the switch is disassembled and then assembled, it may differ from the assembly accuracy at the factory. If this assembly accuracy is different, an error will occur in the measurement accuracy of the switch, and the correct contact operating state It becomes impossible to grasp.

  The present invention has been made to solve such problems, and provides a state detection device for a switch that can be easily attached and detached without disassembling the switch and a method for attaching the state detection device. Objective.

In order to solve the above problems, the switch state detection device of the present invention is exposed from the inside of the switch body and changes the operation state of the contacts provided in the switch body, A switch state detection device for detecting an operation state of the contact of the switch, which is provided to protrude from the switch body and includes a support unit that supports the main shaft and a drive control unit that drives and controls the main shaft. A first fixing member that is detachably fixed to the main shaft , a resistor disposed on an outer surface of the first fixing member, and an arm portion that extends on the resistor, and is attached to and detached from the support portion A second fixing member that can be fixed; a contact that is slidably attached to the arm of the second fixing member in contact with the resistor; and an electrical connection to the resistor and the contact Of the resistor corresponding to the driving of the spindle By measuring the change in the anti-values, characterized by comprising a detecting section for detecting an operation state of the contact.

The switch state detection device according to the present invention is provided so as to be exposed from the inside of the switch body and to change the operation state of the contact provided in the switch body, and to protrude from the switch body. A switch state detection device for detecting an operation state of the contact of the switch having a support unit that supports the main shaft and a drive control unit that drives and controls the main shaft, and is attachable to and detachable from the support unit. A first fixing member to be fixed; a resistor disposed on an outer surface of the first fixing member; and an arm portion extending on the resistor, and being detachably fixed to the main shaft . A fixing member; a contact that is slidably attached to the arm of the second fixing member in contact with the resistor; and the resistor and the contact that are electrically connected to drive the spindle Measure the change in resistance value of the resistor corresponding to Comprising a detection unit for detecting the operating state of the points, the said spindle by rotation of a predetermined angle, by changing the operating state of the contact, the first fixing member includes a cylindrical periphery of the main shaft and coaxial The resistor is disposed along the cylindrical peripheral surface of the first fixing member, and the drive control unit is based on the operation state of the contact detected by the detection unit, The main shaft is rotationally controlled .

  The mounting method of the state detection device of the present invention is provided so as to be exposed from the inside of the switch main body and to change the operating state of the contact provided in the switch main body, and to protrude from the switch main body. In the state detection device mounting method, a state detection device for detecting an operation state of the contact is attached to a switch having a support portion that supports the main shaft and a drive control portion that drives and controls the main shaft. The first fixing member of the state detection device is detachably fixed to the support portion, and the resistor disposed on the outer surface of the first fixing member by fixing the first fixing member, A step of fixing to the outer surface of the support portion; and a second fixing member having an arm portion extending on the resistor of the state detection device is detachably fixed to the main shaft, and the second fixing member Attached to the arm The contact element, characterized in that it comprises the steps of: causing slidably contact with the resistor.

  The mounting method of the state detection device of the present invention is provided so as to be exposed from the inside of the switch main body and to change the operating state of the contact provided in the switch main body, and to protrude from the switch main body. In the state detection device mounting method, a state detection device for detecting an operation state of the contact is attached to a switch having a support portion that supports the main shaft and a drive control portion that drives and controls the main shaft. The first fixing member of the state detection device is detachably fixed to the main shaft, and the resistor disposed on the outer surface of the first fixing member is fixed to the main shaft by fixing the first fixing member. A second fixing member having an arm portion extending on the resistor of the state detection device in a detachable manner, and an arm of the second fixing member. Attached to the part Contactors, characterized in that it comprises the steps of: causing slidably contact with the resistor.

  According to the present invention, the state detection device can be easily attached and detached without disassembling the switch.

It is a side view which shows the state which attached the state detection apparatus of one Embodiment of this invention to the switch. It is a front view which shows the structure of the state detection apparatus shown in FIG. It is a side view which shows the structure of the state detection apparatus shown in FIG. It is sectional drawing which shows the structure of the contactor shown in FIG. It is a circuit diagram which shows the electric circuit of a state detection apparatus. It is a side view which shows the state which attached the state detection apparatus of Embodiment 2 of this invention to the switch.

(Embodiment 1)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing a state in which a state detection device 8 according to an embodiment of the present invention is attached to a switch 1.
As shown in FIG. 1, the switch 1 includes a switch body 2 filled with gas, a main shaft 3 exposed to the outside from the inside of the switch main body 2, a flange 4 that supports the main shaft 3, and a main shaft 3. And a rotation control unit 5 that controls the rotation.

The flange 4 protrudes from the switch body 2 and includes a seal flange that enables sealing of a highly electrically insulating gas such as argon gas or sulfur hexafluoride gas inside the switch body 2.
The rotation control unit 5 of the switch 1 holds the main shaft 3 exposed from the switch 1 and controls the rotation angle of the main shaft 3, thereby operating the contact state (not shown) provided inside the switch body 2. Is switched to the open or closed state to switch the contacts.

FIG. 2 is a front view showing the configuration of the state detection device 8 shown in FIG. FIG. 3 is a side view showing the configuration of the state detection device 8 shown in FIG.
As shown in FIGS. 2 and 3, the state detection device 8 includes an attachment portion 10 that is detachably fixed to the flange 4 of the switch 1, and an attachment portion 20 that detachably holds the main shaft 3 of the switch 1. Is provided.

  The mounting portion 10 is configured integrally with a fixing ring 11 (first fixing member) formed according to the shape of the protruding flange 4, a resistor 12 disposed on the fixing ring 11, and the fixing ring 11. And a fixing band 13 for detachably fixing the fixing ring 11 to the flange 4.

  The fixing ring 11 is made of MC nylon or the like having high electrical insulation, and corresponds to the shape of the outer peripheral surface of the flange 4 and has a semi-cylindrical peripheral surface coaxial with the main shaft 3. The fixing ring 11 has a cylindrical peripheral surface coaxial with the main shaft 3. The fixing ring 11 may be processed in advance corresponding to the shape of the outer peripheral surface of the flange 4 or may be formed of a flexible material having high insulating properties, such as synthetic resin. When the flexible material is used, the user can later bend the fixing ring 11 in accordance with the shape of the outer peripheral surface of the flange 4 to form a peripheral surface corresponding to the shape of the outer peripheral surface of the flange 4. Therefore, versatility increases.

  The resistor 12 is a variable resistor disposed along the cylindrical peripheral surface (outer peripheral surface) of the fixing ring 11. The resistor 12 constitutes an electric circuit together with a contactor 27 described later, and electric wires 14 are connected to both ends of the resistor 12, respectively.

  The fixed band 13 is composed of an end band having an end. A plurality of holes 15 are formed in the longitudinal direction on the one end 13 a side of the fixed band 13. A locking member 16 that engages with these holes 15 is fixed to the other end 13 b of the fixed band 13. The locking member 16 is made of, for example, a hook-shaped member. The user selects the hole 15 to be the locking position according to the outer diameter of the flange 4 to be fixed, adjusts the locking position, and engages the locking member 16 with the selected hole 15. Thereby, both ends of the fixing band 13 are locked at an optimal locking position according to the shape of the flange 4, and the fixing ring 11 can be fixed to the outer peripheral surface of the flange 4.

  The mounting portion 20 detachably holds the main shaft 3 of the switch 1, and is connected to fixed blocks 21 and 22 (second fixing members) interlocked with the main shaft and the fixed block 21, and slides on the resistor 12. And a contactor 27 that can be contacted.

  The fixed block 21 is formed in a pentagonal shape, and the fixed block 22 is formed in a quadrangular shape, and the fixed blocks 21 and 22 are engaged by a bolt 25. The fixed blocks 21 and 22 are formed of an insulating hard material such as bakelite or glass fiber. The bottom surface of the fixed block 21 and the top surface of the fixed block 22 have semicircular recesses 21a and 22a that are equal in length and face each other.

  The recesses 21a and 22a form a circle when the fixed blocks 21 and 22 are engaged with each other so that the main shaft 3 can be clamped. A plurality of cushion members 23 are arranged symmetrically around the axis of the main shaft 3 on the inner peripheral surfaces of the recesses 21a and 22a. The cushion members 23 have the same elastic modulus, and have a function of aligning so that the centers of the recesses 21 a and 22 a become the center of the main shaft 3 when the fixed blocks 21 and 22 are engaged.

  As a result, the fixed blocks 21 and 22 detachably hold the main shaft 3 and rotate in conjunction with the main shaft 3. The fixed blocks 21 and 22 are engaged with the bolts 25. However, the present invention is not limited to this, and the fixed blocks 21 and 22 are engaged with one touch using, for example, a fastener for a lid of a suitcase. It is also possible to make it.

  An arm 24 extending to the resistor 12 is attached to the fixed block 21. One end of the arm 24 is attached to the fixed block 21 and extends in the vertical direction. The other end is bent in an inverted L shape on the switch body 2 side, and a contactor 27 that is in sliding contact with the resistor 12 is attached to the tip of the other end. The contact 27 is electrically connected to the electric wire 26.

FIG. 4 is a cross-sectional view showing the configuration of the contactor 27 shown in FIG.
The contactor 27 includes a cylindrical cylindrical portion 27a, an elastic body 27b and an electrode terminal 27c provided in the cylindrical portion 27a.

The cylinder part 27a penetrates the tip part of the arm 24 up and down, and is attached to the tip part so as to be fixed.
The elastic body 27b is provided in the cylindrical portion 27a, and presses the electrode terminal 27c against the resistor 12 so as to come into contact therewith.
The electrode terminal 27c has one end in contact with the elastic body 27b and the other end in contact with the resistor 12 by the pressing of the elastic body 27b and is electrically connected. Since the contact terminal 27c slides in a state in which the contact terminal 27c is always in contact with the resistor 12 as the main shaft 3 rotates, the voltage of an electric circuit to be described later can be changed.

FIG. 5 is a circuit diagram showing an electric circuit of the state detection device 8.
As shown in FIG. 5, the electric circuit of the state detection device 8 forms a closed circuit from two power supplies E and a resistor 12 connected in series with the power supply E.
The state detection device 8 includes a detection unit 28, and the detection unit 28 detects a voltage between an intermediate point (connection point) between the two power supplies E and the resistor 12. Since this voltage is changed by the contactor 27 that slides on the resistor 12 as the main shaft 3 rotates, the detection unit 28 can detect the rotation angle of the main shaft 3 based on the changing voltage value. .
The detection unit 28 outputs the detected rotation angle of the main shaft 3 to the rotation control unit 5 of the switch 1, and the rotation control unit 5 can recognize the operation state of the contact by this rotation angle.

Next, the attachment method of this state detection apparatus 8 is demonstrated.
First, when the state detection device 8 is attached to the switch 1, the main ring 3 is supported by the fixing ring 11 and the fixing band 13 in the neutral state of the switch 1 (rotation angle 0 state). The resistor 12 is fixed on the outer peripheral surface of the flange 4 by being attached to the outer peripheral surface of the flange 4.

Next, the contact 27 of the mounting portion 20 is brought into contact with the resistor 12, and the exposed main shaft 3 is clamped by the fixing blocks 21 and 22 of the mounting portion 20, and the mounting portion 20 is screwed to the main shaft 3. Fix it.
When the switch 1 is moved, the detection unit 28 detects the rotation angle of the main shaft 3 and outputs the detected rotation angle of the main shaft 3 to the rotation control unit 5 of the switch 1.

  As described above, in this embodiment, the attachment portion 10 of the state detection device 8 is attached and fixed to the projecting flange 4, and the attachment portion 20 of the state detection device 8 is attached and fixed to the exposed main shaft 3. The state detection device 8 can be easily attached and detached without disassembling the switch 1. As a result, the state detection device 8 can be attached to the switch 1 as necessary.

  Moreover, in this embodiment, while the state detection apparatus 8 is divided and comprised in the attachment part 10 and the attachment part 20, the attachment part 10 and the attachment part 20 are attached to the switch 1 so that attachment or detachment is possible. As a result, maintenance for failure and the like is facilitated, and only one of the failed mounting portions can be replaced, so that cost during replacement can be reduced.

  In this embodiment, the mounting portion 10 is fixed to the flange 4 of the switch 1 and the mounting portion 20 is fixed to the main shaft 3. However, the present invention is not limited thereto, and the mounting portion 10 is fixed to the main shaft 3 and the mounting portion 20 is fixed. May be fixed to the flange 4. Such a configuration is particularly effective, for example, when the diameter of the main shaft 3 is large or in the case of Embodiment 2 described later.

(Embodiment 2)
FIG. 6 is a side view showing a state in which the state detection device 8 according to the second embodiment of the present invention is attached to the switch 1.
As shown in FIG. 6, in this switch 1, the movement control unit 6 controls the movement of the main shaft 3 by a predetermined length in the longitudinal direction (left and right direction on the paper surface), thereby opening or closing the contact. ing.

In such a switch 1, the mounting portion 10 of the state detection device 8 is fixed to the main shaft 3, and the mounting portion 20 is fixed to the flange 4. The configuration of the mounting portion 20 is the same as that of the first embodiment.
On the other hand, in the attachment portion 10, a fixed rod body 17 is used instead of the fixed ring 11. The fixing rod 17 has an outer surface disposed along the longitudinal direction of the exposed main shaft 3 and is fixed to the main shaft 3. Note that the fixing rod 17 may be curved in a bow shape in accordance with the shape of the outer peripheral surface of the flange 4. Further, the fixing rod body 17 may be formed of a flexible material having high insulating properties, such as a resin.

The resistor 12 is a variable resistor disposed along the longitudinal direction of the outer surface of the fixed rod body 17 (the left-right direction on the paper surface). As for this resistor 12, the electric wire 14 is connected to the both ends of the resistor 12, respectively.
The fixing band 13 is integrally formed with the fixing rod body 17, and the fixing rod body 17 is detachably fixed to the main shaft 3. The configuration of the fixed band 13 is the same as that of the first embodiment. Further, a plurality of fixing bands 13 may be provided in order to make the fixing rod body 17 fixed to the main shaft 3 stronger.

The electric circuit of the state detection device 8 is the same as that shown in FIG.
The detector 28 detects the voltage between the intermediate point (connection point) of the two power supplies E and the resistor 12. Since this voltage changes with the contact 27 which slides on the resistor 12 with the movement of the main axis | shaft 3, the detection part 28 can detect the moving distance of the main axis | shaft 3 based on this changing voltage value. .

  When the state detector 8 is attached to the switch 1, the fixing ring 11 of the mounting portion 10 is attached to the outer peripheral surface of the main shaft 3 by the fixing band 13 in the neutral state of the switch 1, and the resistor 12 is attached to the switch 12. It is fixed on the outer peripheral surface of the main shaft 3.

Next, the contact 27 of the mounting portion 20 is brought into contact with the resistor 12, and the protruding flange 4 is sandwiched by the fixing blocks 21 and 22 of the mounting portion 20, and the mounting portion 20 is fixed to the flange 4 with screws. To do.
When the switch 1 is moved, the detection unit 28 detects the movement distance of the main shaft 3 and outputs the detected movement distance of the main shaft 3 to the rotation control unit 5 of the switch 1.

  As described above, in this embodiment, the attachment portion 10 of the state detection device 8 is attached and fixed to the exposed main shaft 3, and the attachment portion 20 of the state detection device 8 is attached and fixed to the protruding flange 4. As a result, as in the first embodiment, the state detection device 8 can be easily attached and detached without disassembling the switch 1 and the operation state of the contact is changed by the movement of the main shaft 3 in the longitudinal direction. 1 can also be applied.

  In this embodiment, the fixing rod body 17 of the mounting portion 10 is attached to the main shaft 3. However, the present invention is not limited to this, and the fixing rod body 17 is arranged in a direction perpendicular to the circumferential direction of the flange 4 (left and right direction on the paper surface). It is also possible to attach and attach the attachment portion 20 to the main shaft 3. In this case, the same effect as that of the second embodiment can be obtained.

  In addition, this invention is not limited only to the said embodiment, You may deform | transform a component in the range which does not deviate from the summary in an implementation stage. In addition, various inventions can be configured by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

  DESCRIPTION OF SYMBOLS 1 ... Switch, 2 ... Switch body, 3 ... Main shaft, 4 ... Flange, 5 ... Rotation control part, 6 ... Movement control part, 8 ... State detection apparatus, 10 ... Mounting part, 11 ... Fixing ring, 12 ... Resistance Body: 13 ... Fixing band, 14 ... Electric wire, 15 ... Hole, 16 ... Locking member, 17 ... Fixing rod, 20 ... Mounting part, 21: 22 ... Fixing block, 21a, 22a ... Recessed part, 23 ... Cushion member , 24 ... arms, 25 ... bolts, 26 ... electric wires, 27 ... contacts, 27a ... cylindrical parts, 27b ... elastic bodies, 27c ... electrode terminals, 28 ... detection parts.

Claims (13)

A main shaft that is exposed from the inside of the switch body and changes an operating state of a contact provided inside the switch body; a support portion that protrudes from the switch body and supports the main shaft; and A drive control unit for driving and controlling the main shaft, and a switch state detection device for detecting an operation state of the contact of the switch,
A first fixing member that is detachably fixed to the main shaft;
A resistor disposed on an outer surface of the first fixing member;
A second fixing member comprising an arm portion extending on the resistor, and detachably fixed to the support portion;
A contact that is slidably attached to the arm of the second fixing member in contact with the resistor;
A detector that is electrically connected to the resistor and the contact, and that detects a change in the resistance value of the resistor corresponding to driving of the spindle to detect an operating state of the contact;
A switch state detection device comprising: The main shaft changes the operation state of the contact by rotation of a predetermined angle,
The first fixing member has a cylindrical peripheral surface coaxial with the main shaft,
The resistor is disposed along a cylindrical peripheral surface of the first fixing member,
The drive control unit, on the basis of the operating state of the contact detected by the detecting unit, switch state detecting apparatus according to claim 1, wherein the rotating control the spindle. The main shaft changes the operating state of the contact by movement of a predetermined length in the longitudinal direction,
The first fixing member has an outer surface disposed along the longitudinal direction of the main shaft,
The resistor is disposed along an outer surface of the first fixing member;
The drive control unit, on the basis of the operating state of the contact detected by the detecting unit, switch state detecting apparatus according to claim 1, characterized in that the movement control of the spindle. A main shaft that is exposed from the inside of the switch body and changes an operating state of a contact provided inside the switch body; a support portion that protrudes from the switch body and supports the main shaft; and A drive control unit for driving and controlling the main shaft, and a switch state detection device for detecting an operation state of the contact of the switch,
A first fixing member detachably fixed to the support portion;
A resistor disposed on an outer surface of the first fixing member;
A second fixing member comprising an arm portion extending on the resistor and detachably fixed to the main shaft;
A contact that is slidably attached to the arm of the second fixing member in contact with the resistor;
A detector that is electrically connected to the resistor and the contact, and that detects a change in the resistance value of the resistor corresponding to driving of the spindle to detect an operating state of the contact;
Equipped with,
The main shaft changes the operation state of the contact by rotation of a predetermined angle,
The first fixing member has a cylindrical peripheral surface coaxial with the main shaft,
The resistor is disposed along a cylindrical peripheral surface of the first fixing member,
The drive control unit controls the rotation of the main shaft based on the operation state of the contact detected by the detection unit. A main shaft that is exposed from the inside of the switch body and changes an operating state of a contact provided inside the switch body; a support portion that protrudes from the switch body and supports the main shaft; and A drive control unit for driving and controlling the main shaft, and a switch state detection device for detecting an operation state of the contact of the switch,
A first fixing member detachably fixed to the support portion;
A resistor disposed on an outer surface of the first fixing member;
A second fixing member comprising an arm portion extending on the resistor and detachably fixed to the main shaft;
A contact that is slidably attached to the arm of the second fixing member in contact with the resistor;
A detector that is electrically connected to the resistor and the contact, and that detects a change in the resistance value of the resistor corresponding to driving of the spindle to detect an operating state of the contact;
Equipped with,
The main shaft changes the operating state of the contact by movement of a predetermined length in the longitudinal direction,
The first fixing member has an outer surface disposed along the longitudinal direction of the main shaft,
The resistor is disposed along an outer surface of the first fixing member;
The switch state detection device according to claim 1, wherein the drive control unit controls movement of the main shaft based on an operation state of the contact detected by the detection unit. The contact is
An electrode terminal in electrical contact with the resistor;
An elastic body that presses the electrode terminal against the resistor;
An accommodating portion for accommodating the electrode terminal and the elastic body;
Switch state detection device according to any one of claims 1 to 5, characterized in that it has a. The first fixing member is
A deformable member that can be deformed corresponding to the shape of the support portion;
A fixing band for removably fixing the deformable member to the support portion;
The switch state detection device according to any one of claims 2, 4, and 5, wherein: A plurality of holes are formed in the longitudinal direction on one end side of the fixed band, and the other end side of the end band is engaged with the hole, and the other end side is connected to one end side of the end band. The switch state detecting device according to claim 7, further comprising a locking member to be locked. The second fixing member is
A first clamping member and a second clamping member having opposing depressions for clamping the main shaft;
A contact member provided at a predetermined interval on the inner peripheral surface of the recess, and contacting the main shaft;
An engagement member that engages the first clamping member and the second clamping member so that the hollow portion clamps the main shaft;
The switch state detection device according to any one of claims 2, 4, and 5, wherein: The second fixing member is
A first sandwiching member and a second sandwiching member having opposing recesses for sandwiching the support portion;
A contact member that is provided at a predetermined interval on the inner peripheral surface of the recess, and contacts the support;
An engagement member that engages the first clamping member and the second clamping member so that the hollow portion clamps the support portion;
The switch state detecting device according to claim 1, wherein the switch state detecting device is a switch. The switch contact state detection device according to claim 9 or 10 , wherein the contact member is disposed symmetrically about an axis of the main shaft. A main shaft that is exposed from the inside of the switch body and changes an operating state of a contact provided inside the switch body; a support portion that protrudes from the switch body and supports the main shaft; and In the attachment method of the state detection device, the state detection device for attaching the state detection device for detecting the operation state of the contact point to a switch having a drive control unit for driving and controlling the main shaft,
The first fixing member of the state detection device is detachably fixed to the support portion, and the resistor disposed on the outer surface of the first fixing member by fixing the first fixing member, Fixing to the outer peripheral surface of the support part;
A second fixing member provided with an arm portion extending on the resistor of the state detection device is detachably fixed to the main shaft, and a contactor attached to the arm portion of the second fixing member, Slidably contacting the resistor;
A method for mounting a state detection device comprising: A main shaft that is exposed from the inside of the switch body and changes an operating state of a contact provided inside the switch body; a support portion that protrudes from the switch body and supports the main shaft; and In the attachment method of the state detection device, the state detection device for attaching the state detection device for detecting the operation state of the contact point to a switch having a drive control unit for driving and controlling the main shaft,
The first fixing member of the state detection device is detachably fixed to the main shaft, and the resistor disposed on the outer surface of the first fixing member by fixing the first fixing member, Fixing to the outer peripheral surface of the spindle;
A second fixing member having an arm portion extending on the resistor of the state detection device is detachably fixed to the support portion, and a contactor attached to the arm portion of the second fixing member is provided. Slidably contacting the resistor; and
A method for mounting a state detection device comprising:

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