JP3738551B2 - Load switch status display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a state display device for an indoor load switch provided with a spring energy storage type operation device.
[0002]
[Prior art]
In this conventional status display device, a hook lever is rotatably supported on the opening / closing main shaft of the load switch, an operation spring is connected to the tip of the hook lever, and the tip of the hook lever is engaged / disengaged from the breaking hook. The spring state display plate with the release indication and the energy storage indication is directly attached to the hook lever, the spindle lever is fixed to the spindle, and the hook lever and the spindle lever are connected by a link. A drive spring is connected to the hook, and the tip end of the spindle lever is detachably locked to the closing hook.
[0003]
In the loading preparation state, the tip of the hook lever is locked to the blocking hook, the tip of the spindle lever is locked to the loading hook, the operating spring and the driving spring are compressed and stored, and the hook lever Is biased in the shut-off direction by the operating spring and the drive spring, the spindle lever is biased in the closing direction by the drive spring, and the energy storage display on the display plate is located at the display position.
[0004]
Next, when a closing command is received, the closing hook is rotated, the main shaft lever is unlocked, the main lever is rotated by the release of the drive spring, the main shaft is rotated in the closing direction, and the load switch is turned on. become.
[0005]
Next, when the shut-off command is received, the shut-off hook rotates, the hook lever is unlocked, the hook lever disengages from the shut-off hook, and the hook lever rotates in the shut-off direction by the release of the operating spring and the drive spring. Then, the rotation of the hook lever causes the main shaft lever and main shaft to rotate in the shut-off direction via the link, the main shaft lever is locked to the closing hook, the load switch is shut off, and the display plate is released to the display position. The trend display is located.
[0006]
When the cam is rotated, the hook lever gradually rotates in the direction opposite to the shut-off direction due to the cam rotation, the operation spring and the drive spring are compressed and stored, and the hook lever is locked to the shut-off hook. The spindle lever is urged in the closing direction and the hook lever is biased in the closing direction, and the loading preparation state is obtained.
[0007]
In this case, the stored energy display of the display board is gradually displayed at the display position as the hook lever rotates.
[0008]
[Problems to be solved by the invention]
In the conventional device, when changing from the shut-off state to the loading preparation state, the display plate energy display is gradually displayed along with the rotation of the hook lever, so when the spring energy storage operation is stopped halfway, There is a problem that it is unclear whether or not the current state, that is, the stored state of the spring is a complete state.
[0009]
In addition, when an erroneous operation is performed, that is, when a closing operation is performed in the middle of the spring energy storage operation, there is a problem that the operation becomes incomplete and the operation of the main circuit is not normal.
[0010]
The present invention takes note of the above-mentioned points, and displays a stored energy display on a display plate at a display position in a state where a spring energy has been completed, thereby preventing incomplete loading during the spring energy operation. The purpose is to provide.
[0011]
[Means for Solving the Problems]
In order to solve the above problems, a load switch status display device according to the present invention includes a hook lever that has a base rotatably supported by an opening / closing main shaft of a load switch, and stores an operation spring by the rotation, and the operation spring. The hook lever that has stored energy is locked, the hook is released by rotation to release the operating spring, the drive pin protruding from the hook lever, and the main shaft is rotatable. And a drive lever formed with a protrusion, a contact portion, and an elongated notch, and both ends of the drive lever are engaged with the hook lever and the drive lever, and the protrusion of the drive lever contacts the drive pin. A drive spring biased in the direction of contact;
The upper and lower portions of the operation spring display and energy storage display, respectively, a vertically movable spring state display plate in which the main shaft is inserted in a long hole, a locking lever that is rotatably supported, A front end portion of the locking lever and a lower end portion of the display plate; a contact pin that is in contact with the contact portion when the operation spring is released; A tension spring connected to a stop lever and biasing the display plate upward via the locking lever and the connecting pin.
[0012]
Therefore, the locking lever rotates via the drive pin due to the rotation of the hook lever due to the release of the operating spring, the connecting pin comes out of the notch at the end of the release, the display plate moves downward, and the release indication Is located at the display position, the drive lever is rotated by the drive spring, the connecting pin is brought into contact with the contact portion of the drive lever, and the downward movement position of the display plate is maintained.
[0013]
Next, the rotation of the hook lever when the operation spring is energized causes the drive lever to rotate via the drive pin, and at the end of the energization, the connecting pin is inserted into the notch by the tension spring, and the display board is , The energy storage display is located at the display position, the upward movement position of the display plate is maintained, and incomplete insertion during the spring energy storage operation is prevented.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
One embodiment will be described with reference to FIGS. In these drawings, reference numeral 1 denotes an opening / closing main shaft of the load switch, 2 denotes a hook lever whose base portion at the lower end is rotatably supported by the main shaft 1, an operation spring 3 is connected to the tip portion, and rotation of the hook lever 2 Is stored. Reference numeral 4 denotes a blocking hook, which has a half-moon-shaped cutout portion 5 and is urged clockwise, and a locking portion 6 at the tip end of the hook lever 2 that stores the operating spring 3 on the hook 4 is locked. The lock 4 is released by the rotation of the hook 4 and the operating spring 3 is released. 7 is a stopper, and the contact portion 8 of the hook lever 2 urged by the operation spring 3 contacts the stopper 7. Reference numeral 9 denotes a drive pin protruding from the lower portion of the hook lever 2.
[0015]
The reference numeral 10 is a substantially inverted fan-shaped drive lever that is rotatably supported by the main shaft 1 and has a projection 11 formed at one end, an abutment 12 at the other end, and an elongated notch 13 at the outside. An arcuate moving surface 14 is formed between the protrusion 11 and the contact portion 12. Reference numeral 15 denotes a drive spring wound around the main shaft 1. Both ends of the drive spring are engaged with the hook lever 2 and the drive lever 10, and the protrusion 11 of the drive lever 10 is urged in a direction to contact the drive pin 9. .
[0016]
Reference numeral 16 denotes a spring state display plate, which includes a base portion 17 and a display portion 19 that floats and extends from the upper edge of the base portion 17 through a bent portion 18 that is bent twice. A long hole 20 is formed, and a discharge indicator 21 and a storage indicator 22 of the operation spring 3 are displayed on the upper and lower parts of the display unit 19, respectively, and the main shaft 1 is inserted into the long hole 20. Is provided to be movable up and down.
[0017]
Reference numeral 23 denotes a locking lever whose base portion is rotatably supported by the support shaft 24, and a contact portion 25 is formed on the upper edge. Reference numeral 26 denotes a connecting pin. The lower end of the display panel 16 and the tip of the locking lever 23 are connected by the connecting pin 26. When the operating spring 3 is released, the connecting pin 26 is connected as shown in FIG. As shown in FIG. 2, the connecting pin 26 is positioned in the notch portion 13 of the drive lever 10 in contact with the contact portion 12 of the drive lever 10 and in the stored state. A tension spring 27 is connected to the locking lever 23 and urges the display plate 16 upward via the locking lever 23 and the connection pin 26.
[0018]
As in the conventional example, the main shaft lever is fixed to the main shaft 1, the hook lever 2 and the main shaft lever are connected by a link, the drive spring is connected to this link, and the main shaft lever is detachably locked to the closing hook. Then, the operating spring 3 and the drive spring are stored by the cam via the hook lever 2 and the link.
[0019]
Next, the operation will be described. FIG. 1 shows a state in which the operating spring 3 is released. The contact portion 8 of the hook lever 2 contacts the stopper 7, the drive pin 9 presses the contact portion 25 of the locking lever 23, and the tension spring 27. Is pulled and stored, the projection 11 of the drive lever 10 contacts the drive pin 9, the connection pin 26 contacts the contact 12 of the drive lever 10, and the upper end of the long hole 20 of the display plate 16 is the main shaft. 1, the display plate 16 is positioned below, and the discharge indicator 21 of the display plate 16 is positioned at the display position 28 indicated by the chain line.
[0020]
Then, the main shaft lever is locked to the closing hook, and the load switch is in a cut-off state.
[0021]
Next, when the operating spring 3 and the drive spring are stored from the released state of FIG. 1, the hook lever 2 is rotated clockwise by the rotation of the cam, and the drive pin 9 and the drive lever 10 are rotated by the rotation of the hook lever 2. The drive lever 10 rotates clockwise through the projection 11.
[0022]
And after the front-end | tip part of the hook lever 2 passes the notch part 5 of the interruption | blocking hook 4, the interruption | blocking hook 4 rotates clockwise, and the latching | locking part 6 of the hook lever 2 interrupts | blocks as shown in FIG. The operation spring 3 and the drive spring are stored in the hook 4 and the main lever is urged clockwise by the drive spring, and the hook lever 2 is urged counterclockwise by the operation spring 3 and drive spring. , Ready for input.
[0023]
On the other hand, at the end of this spring energy accumulation, the notch 13 of the drive lever 10 is moved to the position of the connecting pin 26 by the rotation of the driving lever 10, and the connecting pin 26 is fitted into the notch 13 by the tension spring 27. The lever 23 rotates counterclockwise, the display board 16 moves upward, the stored energy display 22 of the display board 16 is positioned at the display position 28, and the lower end of the long hole 20 of the display board 16 contacts the main shaft 1. The upward movement position of the display board 16 is maintained.
[0024]
When a closing command is received, the closing hook rotates, the main shaft rotates clockwise through the main shaft lever by the release of the drive spring, and the load switch is turned on.
[0025]
Next, upon receiving a shut-off command, the shut-off hook 4 rotates counterclockwise, and the tip of the hook lever 2 passes through the notch 5 in the counterclockwise direction by the release of the operation spring 3 and the drive spring. When the hook lever 2 rotates, the drive pin 9 contacts the contact portion 25 of the locking lever 23, the locking lever 23 rotates clockwise, and the connecting pin 26 passes through the notch 13 of the drive lever 10. The display plate 16 moves downward and the tension spring 27 is pulled.
[0026]
On the other hand, the position of the drive lever 10 is substantially fixed while the connecting pin 26 moves in the notch 13, and the drive pin 9 is separated from the protrusion 11 of the drive lever 10 by the rotation of the hook lever 2, thereby moving the moving surface 14. It moves and stores the drive spring 15.
[0027]
As shown in FIG. 1, when the contact portion 8 of the hook lever 2 contacts the stopper 7, the operation spring 3 and the drive spring are released, and the main shaft lever and the main shaft 1 are counterclockwise via the link. Rotates and the load switch is shut off.
[0028]
On the other hand, at the end of this spring release, the connecting pin 26 comes out of the notch 13 of the drive lever 10 by the rotation of the locking lever 23, the display board 16 moves upward, and the release indication 21 of the display board 16 is displayed. Located at the display position 28, the drive lever 10 is rotated counterclockwise by the release of the drive spring 15, and the protrusion 11 of the drive lever 10 contacts the drive pin 9 and is connected to the contact portion 12 of the drive lever 10. The pin 26 contacts, the upper end of the long hole 20 of the display plate 16 contacts the main shaft 1, the tension spring 27 is stored, and the downward movement position of the display plate 16 is maintained.
[0029]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
In the load switch status display device of the present invention, the drive lever 10 is rotated via the drive pin 9 by the rotation of the hook lever 2 when the operation spring 3 is stored, and the tension spring 27 is used at the end of the storage. Since the connecting pin 26 is fitted into the notch 13 of the drive lever 10, the spring state display plate 16 moves upward, and the stored energy display 22 of the display plate 16 is positioned at the display position 28. The stored energy display 22 of the display board 16 can be displayed at the display position 28, and incomplete insertion during the spring stored operation can be prevented.
[Brief description of the drawings]
FIG. 1 is a front view of a release state of an operation spring according to a first embodiment of the present invention.
FIG. 2 is a front view of a stored state of the operation spring of FIG. 1;
3 is a front view of the hook lever, the drive lever, the spring state display plate, and the locking lever of FIG. 1, respectively.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Opening / closing main shaft 2 Hook lever 3 Operation spring 4 Hook 9 Drive pin 10 Drive lever 11 Protrusion part 12 Contact part 13 Elongation notch part 15 Drive spring 16 Spring state display board 20 Long hole 21 Discharge display 22 Accumulation display 23 Locking Lever 26 Connecting pin 27 Tension spring 28 Display position

Claims (1)

A hook lever that is rotatably supported by the main shaft of the load switch and stores an operation spring by rotation;
A hook that locks the tip of the hook lever that stores the operating spring, releases the locking by rotation, and releases the operating spring;
A drive pin protruding from the hook lever;
A drive lever that is rotatably supported by the main shaft and has a protrusion, a contact portion, and an elongated notch;
A drive spring having both ends locked to the hook lever and the drive lever and biasing the protrusion in a direction to contact the drive pin;
A spring state display plate that is movable up and down, and displays a release indication and an accumulation indication of the operation spring on the upper part and the lower part, respectively, and the main shaft is inserted into a long hole,
A locking lever supported rotatably;
A connecting pin that connects the distal end portion of the locking lever and the lower end portion of the display plate, contacts the contact portion when the operating spring is released, and is positioned at the notch portion when stored.
A tension spring coupled to the locking lever and biasing the display plate upward via the locking lever and the coupling pin;
When the hook lever is rotated by the release of the operating spring, the locking lever is rotated via the drive pin, and at the end of the release, the connecting pin comes out of the notch, and the display plate is moved downward. Moved, the release indicator is positioned at the display position, the drive lever is rotated by the drive spring, the connecting pin contacts the contact portion of the drive lever, and the lower position of the display plate is maintained. ,
When the operation spring is energized, the hook lever rotates to rotate the drive lever via the drive pin, and at the end of the energization, the connection pin is inserted into the notch by the tension spring. The load switch status display device, wherein the display plate moves upward, the stored energy display is located at the display position, and the upward movement position of the display plate is maintained.

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