JP3380403B2 - Switch - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch which is opened and closed automatically by remote control or manually by manual operation.

[0002]

2. Description of the Related Art Conventionally, a switch of this type has the following functions and has a structure shown in FIG.

(1) Opening and closing operations can be performed automatically by remote control (automatic opening and closing). (2) It can be opened and closed manually. (3) The opening operation in the automatic mode can be remotely controlled by the trip mechanism.

(4) The power storage mechanism applies opening force to both the automatic mode and the manual mode. That is, as shown in FIG. 11, an operation handle 51 is rotatably provided on the switch case 50, and the operation handle 51 can take an automatic opening / closing operation position P1 and a manual closing position Q1. . By switching the positions P1 and Q1 of the operation handle 51, the manual mode and the automatic mode can be selected. Manual mode refers to the mode of manually opening and closing the opening and closing part of the switch,
The automatic mode is a mode in which the opening / closing unit is automatically opened / closed by remote control by a remote control device (not shown).
When the operating handle 51 is in the manual closing position Q1, the opening / closing part of the switch is always in the manual closing state, and when the operating handle 51 is in the automatic opening / closing operation position P1, the opening / closing part is in the manual opening state and It is in a state capable of automatic opening / closing operation by remote control, and can be in an automatic closing state or an automatic opening state.

The switch case 50 has an operating handle 5
In addition to 1, the trip operation handle 52 is rotatably provided. The trip operation handle 52 is operated when manually opening the opening / closing portion in the automatic closing state. That is, the operation handle 51 is moved to the automatic opening / closing operation position P.
In the case of No. 1, when manually opening the opening / closing part in the automatic closing state, the operation handle 51 is left at the automatic opening / closing operation position P1 and the trip operation handle 52 is rotated. Can be achieved by.

[0006]

However, in addition to the operation handle 51 for switching the operation between the automatic mode and the manual mode on the side surface of the switch case 50, the trip operation handle 52 is present, which not only complicates the operation, A complicated link mechanism was required for linking both handles 51, 52.

Therefore, the present invention utilizes the operating handle for switching between automatic opening and closing or manual opening and closing as it is,
It is an object of the present invention to provide a switch which enables the setup from the automatic loading state to the manual loading state, eliminates the complexity of operability, and simplifies the link mechanism.

[0008]

According to a first aspect of the present invention, a first position for enabling an automatic opening / closing operation of an opening / closing section by driving a drive means and an automatic opening / closing operation for the opening / closing section are disabled. And an operating handle capable of taking a second position that allows a manual opening / closing operation of the opening / closing part, and switching the operating handle from the first position to the second position in the automatic closing state of the opening / closing part. The gist of the present invention is that the opening / closing part can be manually opened by returning the operating handle from the second position to the first position while maintaining the opening / closing part in the closed state.

According to a second aspect of the present invention, there is provided a first position for enabling an automatic opening / closing operation of the opening / closing section by driving the driving means,
An operation handle that can take an automatic opening / closing operation of the opening / closing section and a second position that allows a manual opening / closing operation of the opening / closing section, and is linked to the operation handle, and is opened in the automatic closing state of the opening / closing section. A power storage mechanism that stores a biasing force in a direction, a trip mechanism that releases the power stored in the power storage mechanism when the opening / closing part is in the automatic closing state when the operation handle is in the first position, The gist of the invention is that it is provided between the force mechanism and the trip mechanism, and comprises link switching means for converting the operating handle from the automatic closing state to the manual closing state while maintaining the automatic opening / closing part in the automatic closing state. .

According to a third aspect of the present invention, the link switching means operates the trip mechanism when the operating handle is operated from the first position to the second position when the opening / closing portion is in the automatic closing state. The gist is that the opening / closing part cannot be opened by delaying or not operating.

According to a fourth aspect of the present invention, the link switching means is rotatable on either a plunger of a trip coil provided in the trip mechanism or a handle link which rotates in conjunction with a power storage mechanism. When the operation handle is supported and is operated from the first position to the second position, the trip mechanism operates or operates by contacting either the plunger of the trip coil or the handle link. The main point is that it should not be done.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. (Regarding Opening / Closing Mechanism) As shown in FIGS. 2 and 5, a closing coil 12 as a driving means is provided in a switch case 11, and an opening / closing lever 13 is provided around a fixed pin 13a at the tip end side of the plunger 12a. And is rotatably supported. A contact rod 14 is provided at the base end of the opening / closing lever 13, and the tip of the plunger 12a of the closing coil 12 can contact the contact rod 14. An interlocking lever 15 is rotatably provided at the tip of the opening / closing lever 13 via a shaft 13b, and a pivoting lever 16 is rotatably supported at an upper end of the interlocking lever 15 about an opening / closing shaft 17. . The opening / closing shaft 17 is connected to an opening / closing unit (not shown). When the closing coil 12 is excited and the plunger 12a thereof is projected, the turning lever 16 is rotated from the position indicated by the chain double-dashed line in FIG. 5 to the position indicated by the solid line through the opening / closing lever 13 and the interlocking lever 15. It moves and the opening and closing part is turned on. The opening / closing lever 1
An opening / closing mechanism A is composed of 3, the interlocking lever 15, the rotating lever 16, a part of a power storage mechanism B described later, and the like.

(Regarding Operation Handle) As shown in FIGS. 1 to 3, the handle shaft 1 is provided on the front side wall of the switch case 11.
8 is penetrated, and the handle shaft 18 is rotatably supported by a pair of support plates 19a and 19b provided in the switch case 11. An operation handle 20 is attached to the outer end of the handle shaft 18, and the operation handle 20 can take an automatic opening / closing operation position (first position) P and a manual closing position (second position) Q. There is. By selectively switching both positions P and Q of the operation handle 20,
The operation can be selected between manual mode and automatic mode. The manual mode is a mode in which the opening / closing section is opened / closed manually, and the automatic mode is a mode in which the opening / closing section is opened / closed by the excitation of the closing coil 12. That is, when the operation handle 20 is in the automatic opening / closing operation position P, the automatic mode is set, and the opening / closing section is in the automatic closing state or the automatic opening state. When the operation handle 20 is in the manual closing position Q, the manual mode is set, and the opening / closing part of the switch is always in the manual closing state.
Is operated to the automatic opening / closing position P so that it can be manually opened. The open / closed state at both positions is a pointer (not shown) provided outside the switch case 11.
Is displayed.

(Regarding Power Storage Mechanism B) As shown in FIGS. 1 to 3, a handle link 21 is fixed to the inner end of the handle shaft 18, and the handle link 21 rotates integrally with the handle shaft 18. It is designed to move. Further, the tubular portion 22a of the first toggle link 22 is inserted through the handle shaft 18, and the first toggle link 22 is rotatable about the handle shaft 18. The handle link 21
The first pin 23 protruding forward from the right end (right side in FIG. 3) of the first toggle link 22 and the second pin 24 protruding rearward from the right end of the first toggle link 22 can be expanded and contracted. A flexible spring support tube 25 is provided. Both ends of the spring support tube 25 are rotatably supported about the pins 23 and 24. Two compression springs 2 are provided around the spring support tube 25.
6a and 26b are wound. Then, the compression spring 26
a and 26b are gradually accumulated until just before the handle link 21 exceeds the dead point position α on the line connecting the center of the handle shaft 18 and the center of the second pin 24, and when the dead center position α is exceeded, The accumulated power is released.

As shown by the solid line in FIG. 3, when the opening / closing portion is in the automatic closing state, the compression spring 26
a and 26b are in a stored state and urge the first toggle link 22 in the clockwise direction shown in FIG. or,
As shown by the solid line in FIG. 4, when the opening / closing part is in the manual closing state, or as shown by the chain double-dashed line in FIG.
6b is not in a stored state.

A connecting lever 27 is rotatably provided at the tip of the opening / closing lever 13, and the upper end of the connecting lever 27 is the right end of the first toggle link 22 (right side in FIG. 3).
Is rotatably connected to. A second toggle link 29 is rotatably supported on the left end (left side in FIG. 3) of the first toggle link 22 via a connecting pin 28, and an upper end of the second toggle link 29 is connected via a connecting shaft 30. The third toggle link 31 is rotatably supported. The upper end of the third toggle link 31 has the support plates 19a, 1
It is rotatably supported with respect to a fixed shaft 31a installed on 9b. In addition, the handle mechanism 21, the spring support tube 25, both compression springs 26a, 26b, the first to third toggle links 22, 29, 31 and the like constitute a power storage mechanism B,
The opening / closing mechanism A is driven by releasing the accumulated force of the compression springs 26a and 26b in the force accumulation mechanism B.

(About Trip Mechanism) As shown in FIGS. 2 and 3, the bracket 3 is provided on the inner surface of the support plate 19b.
2 is provided, and a trip coil 33 is attached to the bracket 32. In the trip coil 33, a plunger 3 movable in the left-right direction (up-down direction in FIG. 2) is provided.
3a is provided, and the plunger 33a is configured to move to the left when the trip coil 33 is excited. A support rod 3 is provided at the left end of both support plates 19a and 19b.
4 is rotatably supported, and a twist coil spring 35 is wound around the rear end of the support rod 34. Twist coil spring 3
The rear end (right side in FIG. 2) of 5 is hooked on the upper edge of the support plate 19b, and the front end is hooked on the operating piece 36 welded to the outer surface of the support rod 34. The operating piece 36 is arranged so as to face the plunger 33a protruding from the left end of the trip coil 33, and is biased toward the plunger 33a by a twist coil spring 35.

Further, a trip link 37 is fixed to the front end of the support rod 34, and the trip link 37 is provided on the support rod 3.
The trip link 37 is fixed so that the trip link 37 can rotate integrally with the shaft 4, and the tip end of the trip link 37 can contact the outer peripheral surface of the connecting shaft 30. When the plunger 33a of the trip coil 33 is excited during automatic opening, the operating piece 36 is twisted by the plunger 33a.
By being pressed against the biasing force of the trip link 37, the trip link 37 rotates in the clockwise direction shown in FIG. Therefore, the compression springs 26a, 2 of the power storage mechanism B are
When the opening and closing portion is maintained in the automatic closing state by accumulating the force by 6b, the tip of the trip link 37 causes the connecting shaft 3 to move.
By separating from the outer side surface of 0, the rotation restriction of the second toggle link 29 and the third toggle link 31 about the fixed shaft 31a is released. Then, the compression springs 26a, 26
The first toggle link 22 is rotated clockwise by the urging force of b, and the opening / closing portion is opened. A trip mechanism C is composed of the trip coil 33, the operating piece 36, the trip link 37 and the like.

Further, as shown in FIG. 8, an actuator 38 as a link switching means is provided at the left end of the handle link 21, and the actuator 38 is opposed to the right end of the plunger 33a of the trip coil 33. The base end of the actuator 38 is rotatably supported by a pin 39. An upper sloping surface 38a and a lower sloping surface 38b are formed at the tip of the actuator 38, and the actuator 38 is tapered toward the tip side by the both sloping surfaces 38a and 38b. Upper inclined surface 38a
A stepped stopper portion 38c is formed on the upper end of the actuator 38 on the proximal end side. The stopper portion 38c contacts the upper end edge of the handle link 21 to regulate the rotation amount of the actuator 38 in the clockwise direction, and the rotation regulation timing is the timing of the first pin 23 of the first pin 23 during the manual opening operation. The center is before the dead center position α. Also, the actuator 38
The base end edge of the cylindrical portion 22 of the first toggle link 22 is
By contacting the outer peripheral surface of a, the rotation of the actuator 38 in the counterclockwise direction is restricted.

Next, the opening / closing operation of this switch will be described in detail. (Manual input) As shown by the solid line in FIG. 6 or the chain double-dashed line in FIG. 4, the operation handle 20 is operated from the automatic opening / closing operation position P to the manual insertion position Q in the manual open state in the automatic mode. Then, the upper inclined surface 38a of the actuator 38 slides on the right end of the plunger 33a of the trip coil 33, and the operation of the trip mechanism C is delayed by the actuator 38. That is, the operation handle 20 is moved from the automatic opening / closing operation position P to the manual insertion position Q.
When turned to, the handle link 21 is turned clockwise. By this rotation, after the center of the first pin 23 exceeds the dead center position α (the position indicated by the chain double-dashed line in FIG. 6),
The plunger 33a of the trip coil 33 is pushed toward the trip side (left side in FIG. 6), and the trip link 37 is separated from the connecting shaft 30. Therefore, the handle link 21 also rotates in the clockwise direction of the operation handle 20 and the compression spring 2
6a and 26b exceed the dead center position α. By releasing the regulation of the trip link 37, the first toggle link 22 is rotated counterclockwise and the opening / closing portion is manually closed.

(Manual release) From the manual insertion state shown by the solid line in FIG. 7, the operation handle 20 is rotated counterclockwise. With the rotation of the handle shaft 18, the handle link 2
1 is rotated counterclockwise. By this rotation, before the center of the first pin 23 exceeds the dead center position α (the position indicated by the chain double-dashed line in FIG. 7), the plunger 33a of the trip coil 33 is pressed to the left, and the trip link 37 Moves away from the connecting shaft 30. Therefore, the handlebar link 21 also rotates following the counterclockwise direction of the operation handle 20 and the compression springs 26a and 26b exceed the dead center position α. When the regulation of the trip link 37 is released, the first toggle link 22 is rotated clockwise, and the opening / closing portion is manually opened.

(Automatic closing) When a closing signal is output to the closing coil from the remote control device (not shown) in the manually opened state (two-dot chain line) shown in FIG.
a projects to the right in FIG. The opening / closing lever 13 is rotated counterclockwise through the contact rod 14 that contacts the plunger 12a, and the connecting lever 27 is pushed up to rotate the first toggle link 22 counterclockwise. Compression spring 2 located between 22 and the handle link 21
6a and 26b are compressed, and the opening / closing part is inserted.
Then, the counterclockwise rotation of the first toggle link 22 is stopped by a stopper (not shown), the trip link 37 and the connecting shaft 30 come into contact with each other, and the second toggle link 29 and the third toggle link 31 are connected. Is maintained in the left-turned state, and the opening / closing part is maintained in the automatic closing state while the compression springs 26a and 26b are energized in the opening direction.

(Automatic Opening) In the automatic closing state (solid line state shown in FIG. 3), the trip coil 33 operates in response to an opening signal from a remote control device (not shown) to cause the plunger 3 to move.
3a projects to the left and rotates the trip link 37 clockwise. Then, the trip link 37 and the connecting shaft 30
Is disengaged, the first toggle link 22 is rotated clockwise by the urging force of the compression springs 26a and 26b, and the state shown by the chain double-dashed line in FIG. 4 is reached, and the opening / closing portion is opened.

Next, the operation of the switch having the above structure will be described. When it is necessary to manually open the power supply from the automatic power-on state for inspection of the distribution line, etc., perform as follows. That is, as shown in FIG. 3, when the operation handle 20 in the automatic opening / closing operation position P is rotated to the manual closing position Q, the handle link 21 is rotated from the position shown by the solid line to the position shown by the chain double-dashed line. Be moved. Then, the upper inclined surface 38a of the actuator 38 is slid to the right end of the plunger 33a of the trip coil 33. Then,
The plunger 33a is moved to the trip side (left side in FIG. 6), the trip link 37 is rotated in the clockwise direction shown in FIG. 3 via the operating piece 36 and the support rod 34, and the trip link 37 is separated from the connecting shaft 30. . At this time, the trip link 37 separates from the connecting shaft 30 after the center of the first pin 23 exceeds the dead center position α. Further, when the handle link 21 is rotated clockwise, the first pin 23 moves beyond the dead center position α while further compressing the compression springs 26a and 26b, as shown by the solid line in FIG. At this time, since the rotation of the first toggle link 22 is restricted, the biasing force of the compression springs 26a and 26b does not act in the opening direction of the opening / closing portion. Therefore, the closed state of the switch is maintained, and the manual trip setup state (the manual closed state shown by the solid line in FIG. 4) is set.

When the operating handle 20 is returned to the automatic opening / closing operation position P, the handle link 21 is rotated from the position shown by the solid line in the figure to the position shown by the chain double-dashed line. And
After the lower inclined surface 38b of the actuator 38 contacts the right end of the plunger 33a of the trip coil 33, the stopper portion 38c contacts the upper end edge of the handle link 21. Therefore, the rotation of the actuator 38 is restricted in the clockwise direction before the first pin 23 exceeds the dead center position α. In this state, the lower sloped surface 38b of the actuator 38 causes the plunger 3 in the trip coil 33 to move.
It is slid to the right end of 3a. Then, the plunger 33a is moved to the trip side (left side in FIG. 7), the trip link 37 is rotated in the clockwise direction shown in FIG. 3 via the operating piece 36 and the support rod 34, and the trip link 37 is moved.
Get away from. At this time, the trip link 37 separates from the connecting shaft 30 before the center of the first pin 23 exceeds the dead center position α. Therefore, the first pin 2 of the handle link 21
When 3 exceeds the dead point position α, the first toggle link 22 is rotated clockwise by the restriction of the trip link 37 by the urging force of the compression springs 26a and 26b, and the opening / closing portion is opened. By this series of operations, it is possible to easily open the opening / closing portion in the automatically closed state by manual operation using the operation handle 20.

This embodiment has the following effects (1) to (3). (1) The opening / closing part is maintained in the closed state by switching the operation handle 20 from the automatic opening / closing operation position P to the manual closing position Q. At the same time, the operating handle 20 is operated from the manual closing position Q to the automatic opening / closing operation position P to manually open the opening / closing portion in the closed state. Therefore,
Since the single operation handle 20 that selectively switches between the automatic mode and the manual mode can be operated from the automatic closing state to the manually opened state, the complexity of the operability of the operation handle 20 can be eliminated.

(2) In order to open the opening / closing portion by manually operating the operating handle 20 when the switch is in the automatic closing state, in addition to the operating handle 20, the trip operating handle shown in the prior art or rotating it. A mechanism such as a shaft for supporting may not be provided. Therefore, the structure of the switch can be simplified, the manufacturing cost can be reduced, and the opening can be performed by the manual operation. Moreover, by omitting the trip operation handle, protrusions to the outside of the switch case 11 are reduced, and the operability of the operation handle 20 can be further improved.

(3) With the simple structure of rotatably supporting the actuator 38 on the handle link 21, the opening / closing portion is opened when the operation handle 20 is switched from the automatic opening / closing operation position P to the manual closing position Q. I was not allowed to. Therefore, it is only necessary to rotatably attach the actuator 38 to the handle link and shift the attachment position of the trip coil 33 without significantly changing the design of the switch. Therefore, it is possible to prevent the manufacturing cost from increasing.

The present invention may be configured as follows in addition to the above embodiment. (A) In the above embodiment, the actuator 38 was rotatably supported with respect to the handle link 21, but FIG.
As shown in (a) and (b), an inverted L-shaped actuator 41 may be rotatably supported between the plunger 33a of the trip coil 33 and the handle link.
According to this configuration, as shown in FIG. 9A, when the operation handle 20 is operated from the automatic opening / closing operation position P to the manual insertion position Q when the opening / closing portion is in the automatic insertion state,
The actuator 38 does not press the plunger 33a of the trip coil 33 toward the trip side. Therefore, it is possible to prevent the opening / closing portion from being opened. Also, FIG.
As shown in (b), when the operation handle 20 is operated from the manual closing position Q to the automatic opening / closing operation position P when the opening / closing portion is in the manual closing state, the lower end of the actuator 38 causes the plunger 33a in the trip coil 33 to move. Press on the trip side. Therefore, the opening / closing part can be surely opened. Further, as shown in FIG. 10, a substantially triangular actuator 43 is rotatably supported at the right end of the plunger 33a of the trip coil 33, and the actuator 43 is allowed only to rotate in the counterclockwise direction. Good.

(B) The switch of the above embodiment may be embodied as a gas switch or an air switch.

[Brief description of drawings]

FIG. 1 is a front view of a switch according to an embodiment of the present invention.

FIG. 2 is a plan view showing the inside of the switch.

FIG. 3 is a front view of the inside of the switch, which is also in the automatic closing state.

FIG. 4 is likewise an internal front view of the switch in a manually closed state.

FIG. 5 is a front view of the inside of the switch showing the opening / closing mechanism.

FIG. 6 is a front view of relevant parts showing a transition from automatic loading to manual loading.

FIG. 7 is a front view of the main part of the same, showing the transition from manual insertion to manual opening.

FIG. 8 is a perspective view of the actuator.

FIG. 9 shows another embodiment, (a) is a front view showing a transition from automatic loading to manual loading, and (b) is a front view showing a transition from manual loading to manual opening.

FIG. 10 is a front view showing a modified example of the actuator.

FIG. 11 is a front view of a switch according to the related art.

[Explanation of symbols]

12 ... Input coil (driving means), 20 ... Operation handle,
38 ... Actuator (link switching means), A ... Opening / closing mechanism, B ... Power storage mechanism, C ... Trip mechanism, P ... Automatic opening / closing operation position (first position), Q ... Manual closing position (second position).

Claims (4)

(57) [Claims] 1. A first position for enabling an automatic opening / closing operation of an opening / closing section by driving a driving means, and a first position for disabling an automatic opening / closing operation of the opening / closing section and enabling a manual opening / closing operation of the opening / closing section. 2 is provided, and when the opening / closing part is automatically closed, the operating handle is set to the first position.
The opening / closing part is maintained in the closed state by switching from the position 2 to the second position, and the opening / closing part in the closed state can be manually opened by returning the operation handle from the second position to the first position. vessel. 2. A first position for enabling an automatic opening / closing operation of the opening / closing section by driving the drive means, and a first position for disabling the automatic opening / closing operation of the opening / closing section and enabling a manual opening / closing operation of the opening / closing section. 2 position, a power storage mechanism that is linked to the operation handle and stores the biasing force in the opening direction in the automatic closing state of the opening / closing part, and the operation handle is in the first position. The trip mechanism that releases the stored power of the power storage mechanism when the opening / closing part is in the automatic closing state, and the opening / closing part that is provided between the power storage mechanism and the trip mechanism are in the automatic closing state. A switch consisting of a link switching means for converting the operation handle from the automatic closing state to the manual closing state while maintaining it. 3. The link switching means delays or does not operate the trip mechanism when the operating handle is operated from the first position to the second position when the opening / closing part is in the automatic closing state. The switch according to claim 2, wherein the opening / closing portion is made unopenable. 4. The link switching means is rotatably supported by either one of a plunger of a trip coil provided in a trip mechanism or a handle link that rotates in conjunction with a power storage mechanism, and the operation handle is a first handle. When operated from the position 1 to the second position, the operation of the trip mechanism is activated or deactivated by contacting either the plunger of the trip coil or the handle link. The switch according to claim 2 or claim 3.