JP3030844B2 - Switching 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 switching switch for switching power from a power supply into two input modes to switch on or open, and more particularly to a switching switch having improved drive systems for switching on and off and displaying. About.

[0002]

2. Description of the Related Art FIG. 6 shows a conventional switching switch of this type. FIG. 6 shows a schematic configuration plan view of a conventional switching switch. In the figure, the conventional switching switch is
A main shaft 3 which is rotatably supported through the main body casing 1 and the mechanism casing 2 and a transmission rod 43 which is housed in the mechanism casing 2 and is fixed to the main shaft 3.
a and 43b, which are connected to each other through the main casing 1 and are supplied to a power source (not shown) on the side of the normal power supply or the standby power supply. And spare fixed contacts 5a, 5b,
A movable contact 6 housed in the main casing 1 and supported by the main shaft 3 to selectively contact the regular or spare fixed contacts 5a, 5b; and a movable contact 6 disposed outside the main casing 1. Regular or spare operating handle 70
a switching mechanism 700 which is driven by a and 70b and transmits this driving force to the main shaft 3 via a link mechanism; and a switching mechanism portion which is disposed outside the mechanism casing 2 and which is directly supported by the main shaft 3 to turn on a normal power supply. An opening / closing display indicator 90 for indicating whether the standby power is turned on or off (neutral).

[0003] Each of the regular and spare fixed contacts 5a,
Reference numeral 5b denotes a configuration which is attached via a bushing to the side wall of the main body casing 1 which is symmetric about the main shaft 3.
Further, the movable contact 6 is customary or spare each fixed contact 5a, open in the case of a state erected at an intermediate position 5b (neutral), and by 90 degrees Dzu one rotated from the open position customary Alternatively, it is a configuration in which it is brought into a closed state by contacting each of the spare fixed contacts 5a and 5b.

The ordinary (or spare) electromagnetic drive section 4a (or 4b) includes an iron core 42a (or 42b) having one end connected to the transmission rod 43a (or 43b), and the iron core 42a.
a (or 42b) is accommodated in the ring in a penetrating state, and is excited by the application of a control current (not shown) to excite the iron core 42a.
(Or 42b) for exciting coil 41 to move freely
a (or 41b). The transmission rod 4
3a (or 43b) is the iron core 42a (or 42b)
With the movement, the front end portion is swung, and the driving plate 31 connected to the front end portion is rotated about the main shaft 3 in the direction of the arrow shown in the figure.

The switching mechanism 700 is constituted by a link mechanism (not shown), and the main shaft 3 is turned by 90 degrees via the internal link mechanism by rotating each of the operation handles 70a and 70b (common or spare). It is configured to rotate 90 ° + 90 ° = 180 ° from the regular side to the spare side. As a specific example of the switching mechanism 700, it has not been easy to form a link mechanism as disclosed in Japanese Utility Model Publication No. 57-48019, for example.

Next, the switching operation of the conventional switching switch based on the above configuration will be described. First, in a state where the movable contact 6 is connected to the regular fixed contact 5a and power is supplied from the regular power supply side, the open / close display pointer 90 is maintained in a horizontal state on the side and the "normal use" is set. Indicates that the power is turned on to the regular power supply. If a power failure occurs on the side of the regular power supply while current is being supplied from the regular power supply, a detection unit (not shown) detects this failure. Further, the power supply to the service electromagnetic drive unit 4a is also stopped due to the power failure, the excitation coil 41a of the service electromagnetic drive unit 4a is demagnetized, and the attraction of the iron core 42a by the excitation coil 41a is also stopped. Due to the deenergization of the suction of the iron core 42a, the contact pressing force of the movable contact 6 against the regular fixed contact 5a is also eliminated, and the movable contacts 6 are rotated by 90 degrees to the neutral position in the cut-off state by the opening springs 9a and 9b. With the rotation to the neutral position of 90 degrees, the opening / closing display pointer 90 also rotates by 90 degrees to indicate that it is open (neutral).

Further, a control current is supplied to the electromagnetic drive unit 4 b in response to the detection of the power failure by the detection unit. This was exciting the exciting coil 41b of the preliminary electromagnetic drive unit 4b moves by sucking the core 4 2 b in the excitation coil 41b by energization. With the movement of the iron core 42b, the transmission rod 43b is swung to rotate the main shaft 3 via the drive plate 31, and the rotation of the main shaft 3 causes the movable contact 6 to move 90 degrees from the neutral position (open state). Is rotated only to contact and press against the pre-fixed contact 5b. With the rotation of the main shaft 3, the open / close display indicator 90 is further rotated by 90 degrees to indicate that the "preliminary on" is to be applied to the standby power supply.

[0008] Each of the normal or spare operation handles 70
When the main shaft 3 is rotated via the switching mechanism 700 by manually rotating the a and 70b, similarly to the case of the automatic switching, the movable contact 6 is used for the regular or spare fixed contact. In addition to switching to the closed state by contacting one of the slaves 5a and 5b, the open / close display indicator 90 can indicate which of the closed state and the open state. In this way, even if a power failure occurs on the service power supply side, it is possible to immediately switch to the standby power supply side and supply power to the load connected to the movable contact 6.

[0009]

Since the conventional switching switch is constructed as described above, it is possible to secure a sufficient opening distance at the time of opening. In the case where the switching must be performed at a large angle and the switching is performed by manually operating the ordinary and spare operation handles 70a and 70b, the link mechanism of the switching mechanism 700 is complicated. In particular, in the case where the power supply is switched to the regular / standby power supply side and switched to the open state, the configuration of the link mechanism is further complicated. When the switching operation is performed by the link mechanism that is complicated as described above, there is a problem that transmission loss increases and a smooth switching operation cannot be performed.

Further, in the conventional switching switch, since the opening / closing display pointer 90 is directly supported on the main shaft 3, when the main shaft 3 rotates 90 degrees in order to increase the opening distance, the opening / closing pointer 9 is opened.
0 is also rotated 90 degrees, which increases the load on the open / close display pointer 90 due to exposure to the external wind, rain, snow, and the like, and deteriorates the visibility when the object installed on the pillar is observed from the ground. Have the task of doing SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and proposes a switching switch that smoothly and reliably switches between two power input modes with a simple mechanism and improves the visibility of a switching state. The purpose is to:

[0011]

Means for Solving the Problems A switching switch according to the present invention rotates a movable contact fixed to a main shaft to provide a common switch.
Selectively charged or open the respective fixed contact of the preliminary, the projection
In diverter switch for switching manually or automatically input or open, it is fixed to the main shaft, a drive gear that rotates with the rotation of the main shaft, is formed with a large gear from said drive gear, on each side of the drive gear Regular and spare transmission gears that mesh symmetrically and project engagement projections on each gear side,
Spaced a predetermined distance with respect to a line segment connecting each respective engaging projections of each central portion and conventional or pre Bei definitive Setsujo status or manual switching state of the automatic the conventional and reserve the transmission gear
Disposed in a position parallel Te, at one end of the hook is formed together with the customary and engaged with the engaging projections of the transmission gear of the preliminary and provided at one end of the hook to swing <br/> Provided at the opposite end
A common and spare drive rod rotatably supported by a support pin serving as a fulcrum, and a common and spare drive rod.
A connecting pin is provided between the hook and the support pin.
The normal and standby transmission rods, one end of which is pivotally supported via the connecting pin, and the other end of each of the normal and standby transmission rods are supported, and are rotatable through the casing. Common and spare cams, the main driving parts of which are supported by the through-shafts disposed therein, and the normal and spare cams fixed to the outer ends of the casings of the through-shafts supporting the main driving parts of the normal and the spare cams And the respective operation handles.

Further, the switching switch according to the present invention rotates the movable contact fixed to the main shaft as required, and selectively puts it in or opens each of the regular and spare fixed contacts.
The on or open with switching manually or automatically, in diverter switch for displaying the status of the on or open after the switched-off indication hand, one end portion is rotatably supported on the main shaft, connecting protrusions at the other end A driving rod for the pointer to be fixed,
A long hole for inserting and engaging the connecting projection of the pointer driving rod is formed at one end side, and the other end side is rotatably supported at the other end side by a pointer penetrating shaft penetrating the casing; An opening / closing display pointer which is fixed to the outer end of the casing of the pointer penetrating shaft which supports the other end of the pointer transmission rod, and which displays respective states of normal insertion, preliminary insertion, and opening.

[0013]

According to the present invention, large driving and spare transmission gears mesh with both sides of a small driving gear, and are rotatably engaged with engaging projections projecting from the side surfaces of the normal and spare transmission gears. The hooks of the supported normal and spare drive rods engage with each other, and the manual part is supported on the penetrating shaft by the normal and spare drive rods via the common and spare transmission rods. It is supported by the driven portion of each spare cam, and the ordinary and spare operating handles are fixed to the outer end of the casing of this through shaft. Switching smoothly and reliably.

Further, in the present invention, the rotation of the main shaft is rotated by an angle smaller than the rotation angle of the main shaft via a link mechanism comprising a pointer driving rod and a pointer transmission rod. The burden on the display pointer from the outside world is reduced, and the visibility from the separated position is improved.

[0015]

【Example】

(One Embodiment of the Present Invention) An embodiment of the present invention will be described below with reference to FIGS. 1 is a schematic plan view of the switching switch according to the present embodiment, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is a sectional view taken along line BB and CC of FIG. Show.

In the same figure, the switching switch according to the present embodiment is similar to the conventional switching switch shown in FIG. 4 and includes a main casing 1, a mechanism casing 2, a main shaft 3, and ordinary and standby electromagnetic devices. The driving units 4a and 4b, the regular and spare fixed contacts 5a and 5b, and the movable contact 7 (in the related art,
Corresponds to 6) and the switching mechanism 70 ( 70 in the prior art ).
0 ) and an opening / closing display pointer 90 in common, and the switching mechanism 70 and the switching display pointer 90 have different mechanisms and operations. The switching mechanism 70 of the switching switch according to the present embodiment is fixed in the axial direction of the main shaft 3, and a driving gear 71 that rotates with the rotation of the main shaft 3 and a symmetrical structure on both sides of the driving gear 71. And the transmission gears 72a, 72b on the service side and the spare side formed by projecting the engagement projections 73a, 73b on the respective side end surfaces, and one end on each of the engagement projections 73a, 73b. Are engaged, and the other end is rotatably supported as a fulcrum. The drive rods 74a, 74b on the service side and the spare side, and one end is provided at an intermediate portion of the drive rods 74a, 74b on the service side and the spare side. The driven part is pivotally supported and the driven part is rotatably supported by the driven side and the auxiliary transmission rods 75a and 75b which are pivotally supported, and the other end of the transmission rods 75a and 75b which are supported by the service side and the auxiliary side. Penetrating shaft 76
a and 76b provided on the service side and the spare side, which are supported by the cams 77a and 77b.

The relationship between the drive gears 71 and the transmission gears 72a, 72b on the service side and the spare side is such that the drive gear 71 rotates 90 degrees, while the transmission gears 72a, 72b on the service side and the spare side. Gear ratio (gear that rotates 45 degrees)
ratio). The driving rod 74a (or 74b) on the service side (or spare side) has a substantially arcuate hook 741a (or 741b) formed at one end, and the other end is implanted on the side wall of the main casing 1. The support pin 742a (or 742b) is pivotally supported so as to be swingable, and the end of the service side (or spare side) transmission rod 75a (or 75b) is supported at a substantially central portion by a connection pin 743a (or 743b). Configuration. The support pin 742a (or 7)
42b) is a main shaft 3 and a service side (or spare side) transmission gear 7
It is configured to be implanted on the side wall of the main casing 1 separated by a predetermined distance (for example, 14 mm) from a line segment connecting the centers of the main casing 2a and the center 2b (or 72b).

The penetrating shaft 76a (or 76b) for supporting the driving portion of the service side (or spare side) cam 77a (or 77b).
b) is configured so as to be rotatably supported by penetrating the side wall of the main body casing 1, and the ordinary (or spare) operation handle 70 a (or 70 b) is fixed to an end on the outside of the main body casing 1.

The opening / closing display pointer 90 is connected to the main shaft 3 by a link mechanism comprising a pointer driving rod 91 and a pointer transmission rod 92. The pointer driving rod 91 has a configuration in which one end is pivotally supported by the main shaft 3 and a connecting projection 91a protruding laterally from the side surface of the other end is fixed. The transmission rod 92 for the pointer is formed of a plate having a dimension (for example, twice as long) as the entire length of the drive rod 91 for the pointer, and the connecting protrusion 91a is inserted into and engaged with one end of the plate. An elongated hole 92a is formed, and an end of the plate is pivotally supported by a penetrating shaft 93 for a pointer penetrating the mechanism casing 2.

Further, a drive transmission unit 8 formed of a rack 81 and a pinion 82 is disposed between the main shaft 3 and the common and spare electromagnetic drive units 4a and 4b. The drive transmission means 8 includes a pinion 8
2 is fixed, and both ends of the rack 81 are connected to the pinion 82. This rack 81 and pinion 82
Is formed at a pitch of several teeth such that when the rack 81 moves, for example, 25 mm, the pinion 82 rotates 90 degrees. The rack 81 is moved by the electromagnetic coils 4a, 41b of the ordinary and standby electromagnetic drives 4a, 4b.
It can be set arbitrarily according to the size by which the iron cores 42a and 42b can be sucked. With this set moving distance, the pinion 82 is rotated by an angle that allows the movable contact 7 to rotate from the neutral position (open state) to the regular or spare fixed contacts 5a and 5b.

Next, the switching operation of the present embodiment based on the above configuration will be described. First, the switching switch according to the present embodiment is driven in the automatic switching mode .

The service side (or spare side) drive rod 74 a
(Or 74b) state has Fall in the solid line position until the main shaft 3
A support pin 742a implanted at a position on the side wall of the main body casing 1 separated by a predetermined distance from a line connecting the centers of the transmission gear 72a (72b) on the service side (or the spare side).
(Or 742b), a small angle
The hook 741a is also moved by the rotation of the engagement protrusion 73.
a (or 73b) does not engage .

The display of the automatic switching mode is shown in FIG.
(A) As shown in FIG.
a and 70b are inverted C-shape, and the tip of each of the inverted and U-shaped normal and spare operation handles 70a and 70b is positioned at the "automatic" portion drawn on the outer wall of the main body casing 1. It is. In addition, each indication of “normal use”, “preliminary use” or “open” in the automatic switching mode is performed by an opening / closing display indicator 90 connected to the main shaft 3.

In the case of such an automatic switching mode ,
When a control signal instructing automatic switching is input from a distance,
The excitation coil 4a on the service side excites and rotates the main shaft 3,
Put into the service side. The movable contact 7 to the common fixed contact 5a in the closed state the current supply is Na of the commercial power side is applied. This case, the on-off indication hand 90
Is directed in the direction of 45 degrees at the lower left, and indicates "normal use". In the event of a power failure on the regular power supply,
When the detection unit detects a power failure, the movable contact 7
The current supply to the common electromagnetic drive unit 4a, which is in contact with the common fixed contact 5a, is stopped. When the current supply is stopped, the excitation coil 41a of the common electromagnetic drive unit 4a is in a demagnetized state, and the attraction of the iron core 42a by the excitation coil 41a is also deactivated.

When the suction of the iron core 42a is deactivated, the iron core 42a and the rack 81 are moved by the opening ridges 9a and 9b that urge the elastic force so as to always return the rack 81 to the neutral position side. When the rack 81 moves, the pinion 82 meshing with the rack 81 rotates 90 degrees,
The movable contact 7 is turned to the neutral position to bring it into the open state. When the movable contact 7 rotates, that is, the main shaft 3 rotates, the pointer driving rod 91 rotates 90 degrees, and with this rotation, the pointer transmitting rod 92 rotates 45 degrees. When the pointer transmission rod 92 is rotated by 45 degrees, the open / close display pointer 90 is also rotated by the same 45 degrees via the pointer penetrating shaft 93, and is positioned vertically downward to indicate "open".

[0026] with the transition to the open state, the detection unit which detects the power failure accident supplies a control current to the exciting coil 41b of the preliminary electromagnetic drive unit 4b, the exciting coil 41 b is excited state. Core 42b is attracted by the excitation of the exciting coil 41 b. The iron core 42b is immersed by the urging force of the iron core 42b, and the rack 81 is moved against the elastic force (return force) of the opening springs 9a, 9b with the immersion of the iron core 42b. When the rack 81 moves, a pinion 82 meshing with the rack 81 rotates 90 degrees. The movable contact 7 by the rotation of 90 degrees of the pinion 82 is rotated from the neutral position to contact the pre-fixed contact 5b, the movable contact 7 to the pre-fixed contact 5b
Can be brought into the state of being turned on to the auxiliary power supply side while maintaining the contact in the pressed state. The rotation of the movable contact 7, that is, the main shaft 3
When the pointer driving rod 91 rotates 90 degrees due to the rotation, the pointer transmission rod 92 rotates 45 degrees with this rotation. When the pointer transmission rod 92 rotates 45 degrees, the pointer penetrating shaft 9
The opening / closing display pointer 90 is also rotated by the same 45 degrees through 3, and is positioned in the lower right direction of 45 degrees to indicate "preliminary entry" .

The switching from the power-on state of the standby power supply to the standby power supply also shifts to the neutral position by a 90-degree rotation in the direction of arrow E in the figure, similarly to the switching from the standby power supply to the standby power supply. After that, the movable contact 7 is pressed into the regular fixed contact 5a by further rotation by 90 degrees to perform switching, and the state after the switching is displayed by the open / close display pointer 90.

Next, when shifting from the automatic switching mode to the manual mode, each of the ordinary or spare operating handles 70a, 70b is operated from the automatic switching mode of the operating handles 70a, 70b shown in FIG. This switches to either "normal use" or "preliminary use". First,
To manually switch to the "normal use", the common operation handle 70a is rotated in the direction of arrow C shown in FIG. 2, and the common cam 77a is rotated from the solid line position to the position indicated by the two-dot chain line. Due to the rotation of the service side cam 77a, the service side transmission rod 75a moves upward while rotating one end in an arc shape.
With the upward movement of the service side transmission rod 75a, the center of the service side drive rod 74a is pulled upward and the support pin 742a
The hook portion 741a rotates by a predetermined angle about. The rotation of the hook 741a engages the engagement projection 73a of the service-side transmission gear 72a from the position of the dashed line in the service-side drive rod 74a to move the service-side transmission gear 72a in the direction of arrow D in FIG.
Rotate degrees. When the common side transmission gear 72a is 45 degrees to the dynamic <br/> drive Dohaguruma 71 and the main shaft 3 90 has an arrow E direction
Thus, the movable contact 7 can be brought into contact with the service power supply by holding the movable contact 7 in contact with the service fixed contact 5a in a pressed state.

The manual power supply to the service power supply side
The common operation handle 70a is operated as shown in FIG.
Indicating that the normal operation handle 70a is in a manually inserted state.
Can be displayed as shown in FIG. 4 (B). When the main shaft 3 is turned 90 degrees in the direction of the arrow E, the pointer driving rod 91, the pointer transmission rod 92 and the pointer penetrating shaft are turned on. 9
The opening / closing display pointer 90 is rotated by 45 degrees through 3 to indicate the lower left direction of 45 degrees and displayed as shown by the solid line in FIG. 8B .

The switching of the manual switching mode to the "normally-on" side has been described. Similarly, the "preliminary-on" switching operation for connecting to the standby power supply is performed, and the display after the switching is shown in FIG. ) Is performed as shown by the broken line. Next, with reference to FIGS. 4 and 5, the display operation of the ordinary or spare operation handle and the opening / closing display pointer will be described in further detail.

Firstly, the automatic switching mode of the conventional or spare the operating handle 70a in FIG. 4 (A), the position of 70b, each operating handle 70a of conventional or pre as shown in FIG. 5, by operating 70b By pointing this lower side in the direction of "automatic" drawn on the side wall surface of the main body casing 1, the state becomes an inverted C-shape. In this case, drive control is performed in the automatic switching mode on both the service side and the standby side. Furthermore, in the case where from either power conventional or pre not been the supply of electric power in this state, "OFF drawn on the side wall of the opening and closing indication hand 90 the mechanism casing 2 as shown in FIG. 8 (A) "To indicate the open state.

In this automatic switching mode, when power is supplied from either a normal or standby power supply, the normal (or standby) electromagnetic drive unit 4a (or 4b) is turned on as shown in FIGS. The common (or standby) electromagnetic drive unit 4a (or 4b) is driven based on a detection signal from a detection unit (not shown), and the main contact 3 is rotated by 90 degrees to move the movable contact 7 to the normal (or standby). ) The fixed contact 5a (or 5b) is brought into pressure contact .

In the operation of turning on the power supply of either the ordinary or the standby, the power is turned on in the order of supplying the power earlier. In addition, when the commercial power supply and the backup power supply start supplying power at the same time, the power supply is turned on to the commercial power supply. With such a closed state to either conventional or spare power side, closing indication hand, as shown in FIG. 8 (B) 9
0 indicates the direction of “ normal input” or “preliminary input” , and indicates that the input state is established .

Next, when the mode is shifted from the automatic switching mode to the manual mode, the switching can be performed by operating either the ordinary or the standby operating handle 70a, 70b. In the initial automatic switching mode, FIG.
(A) As shown in FIG.
When a and 70b are in the inverted C-shape and are supplied with power from a common or standby power supply, the open / close display indicator 90 is
As shown in (B), the position of "ON" is displayed to indicate that it is in the ON state.

In the switching state of the switching mode,
By operating the common operation handle 70 a as shown in FIG. 6 is positioned pivoted to as shown in FIG. 4 (B), commercial power side instructs the direction of the lower conventional operating handle 70a is "Manual Input" Indicates that the machine is in a manual operation. By operating the conventional operating handle 70a, regular cam 7 7 a,
Common side transmission lever 75a, regular driver rod 7 4 a, common side transmission gear 72a and the drive gear 71 common fixed contact 5 of the movable contact 7 rotates the spindle 3 via the (switching mechanism portion 70)
a is switched to the normal power supply side by pressing it into contact with a.
With the rotation of the open / close display pointer 90 of the main shaft 3, the open / close display pointer 90 is rotated 45 degrees via the switching mechanism 70,
Indicate the “ON” position and display the input state.

Next, when switching from the normal power supply side to the standby power supply side in the manual mode, each of the normal and standby operation handles 70a and 70b is instructed in the "automatic" direction, and FIG.
An inverted C-shape as shown in FIG. When each of the ordinary and spare operation handles 70a and 70b is pointed to the "automatic" position, the opening / closing display pointer 90 is rotated by 45 degrees to indicate the vertically lower "off" position and opened. Is displayed.

Further, the preliminary operation handle 70 b
Operate, and as shown in FIG.
b. The lower side indicates the “manual on” direction, and
Operation stateIn FIG.Show. This preliminary operation
Operation of the handle 70b via the switching mechanism 70
Movable contact by rotating main shaft 37To the preliminary fixed contact 5b
To make contact with the auxiliary power supply. This
Of the pointer driving rod 91 and the
The opening / closing display pointer 90 is set at 45 degrees via the transmission rod 92 for the pointer.
Rotate and indicate the “ON” position to show the inserted state8
It is displayed as shown by the broken line in (B).

Further, when switching from the standby power supply to the normal power supply in the manual mode, the normal and standby operation handles 70a, 70
b is instructed to the "automatic" position, and the opening / closing display pointer 90 is displayed at the "off" position to be in the open state (see FIG. 5A). After this open state, the ordinary operation handle 70a is operated, and as shown in FIG. 4 (B), the lower side of the ordinary operation handle 70a indicates the "manual on" direction, and is manually turned on to the ordinary power supply side. Indicates that In addition, the opening / closing display pointer 90 is instructed to the “ON” position via the pointer driving rod 91 and the pointer transmission rod 92 in accordance with the closing operation, and the closing state is indicated by a solid line in FIG. 5B. indicate.

(Another embodiment of the present invention) In the switching switch according to the above-described embodiment, the drive gears are used as the transmission gears 72a, 72b on the service side and the spare side for 90-degree rotation.
Are rotated at 45 degrees, but the transmission gears 72a and 72b on the service side and the spare side have a small angle with respect to the rotation angle of the drive gear 71. Can also be configured.

Further, the drive rods 74a, 74b on the service side and the spare side in the switching mechanism 70 of the above embodiment are configured such that the ends are supported by the support pins 742a, 742b. 742b, hook portions 741a and 741b are formed at one end, and the transmission rods 75a and 75 on the other end are used at the other end.
It is also possible to adopt a configuration in which the end of b is supported by connecting pins 743a and 743b.

Further, the embodiment has a configuration in which a 1: 2 ratio of the length of the pointer for transmission lever 92 of the pointer drive rod 91 in the example, pointer drive rod 91 by at least guidance for transmission lever 92 Can be configured with arbitrary lengths that rotate with a short amplitude. Further, in the switching switch according to the embodiment, the driving rods 74a, 74b on the service side and the spare side of the switching mechanism 70 are connected to the center portions of the transmission gears 72a, 72b for the service and the spare, respectively, and the working state or the spare state. Are arranged at positions shifted in parallel by a predetermined distance with respect to a line segment connecting each of the engaging projections 73a and 73b.
a and 74b are used as normal and spare transmission gears 72a and 72b, respectively.
May be arranged at a position that coincides with a line segment connecting the central portion and the engaging projections 73a and 73b.

Furthermore, in the switching switch according to the above embodiment, the elongated hole 92a is formed in the pointer transmission rod 92 so as to insert and engage the coupling projection 91a of the pointer driving rod 91. A U-shaped notch that engages with the portion 91a may be formed in the transmission rod 92 for the pointer. In addition, the opening / closing display pointer 90 in the above-described embodiment is configured such that the rotation angle is adjusted to an arbitrary angle by a plurality of gears having different tooth ratios in addition to the link mechanism including the pointer driving rod 91 and the pointer transmission rod 92. Can be.

[0043]

As described above, according to the present invention, the large driving and spare transmission gears mesh on both sides of the small driving gear, and the engagement projections projecting from the side surfaces of the normal and spare transmission gears respectively. The hooks of the common and spare drive rods rotatably supported by the unit engage with each other, and the manual shaft is connected to the manual and spare drive rods via the common and spare drive rods. It is supported by the driven part of each of the normal and spare cams that are supported,
Since the ordinary and spare operation handles are configured to be fixed to the outer end of the casing of the through shaft, an effect of smoothly and reliably switching between the automatic and manual operations for the ordinary and spare with a small driving distance. Play. Further, in the present invention, the rotation of the main shaft is rotated at an angle smaller than this rotation angle through the link mechanism including the driving rod for the pointer and the transmission rod for the pointer. While reducing the burden from the outside world,
This has the effect of improving the visibility from the separated position.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a switching switch according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of the switching switch shown in FIG.

FIG. 3 is a cross-sectional view taken along line BB and line CC in the switching switch shown in FIG. 1;

FIG. 4 is an explanatory diagram of each operation state of each of the normal and spare operation handles in the switching switch according to the embodiment of the present invention.

FIG. 5 shows an automatic switching mode and opening corresponding to FIG .
FIG. 4 is an explanatory diagram of a configuration operation showing a state.

FIG. 6 is a diagram illustrating a common side of a manual switching mode corresponding to FIG .
It is a structural operation explanatory view of an ON state.

FIG. 7 shows a spare side in a manual switching mode corresponding to FIG . 4 (C).
It is a structural operation explanatory view of an ON state.

FIG. 8 The switching switch according to one embodiment of the present invention
It is a display operation explanatory view of a closed display pointer.

FIG. 9 It is a schematic structure top view of the conventional switching switch.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Main body casing 2 Mechanism casing 3 Main shaft 4a, 4b Electromagnetic drive part 5a, 5a Regular (or spare) fixed contact 6 , 7, movable contact 8 Drive transmission means 9a, 9b Opening ridges 41a, 41b Excitation coils 42a, 42b Iron core 43a, 43b, 87a, 87b Transmission rod 81 Rack 82 Pinion 70, 700 Switching mechanism section 70a, 70b Regular (or spare) operating handle 71 Drive gear 72a, 72b Regular (or spare) transmission gear 73a, 73b Engagement projection Parts 74a, 74b Working side (or spare side) driving rods 75a, 75b Working side (or spare side) transmitting rods 77a, 77b Working side (or spare side) cam 90 Opening / closing display pointer 91 Pointer driving rod 92 Pointer transmitting rod

Claims (3)

(57) [Claims] 1. A rotates the movable contactor which is secured to the main shaft selectively on or open the respective fixed contacts of the conventional replacement at diverter switch for switching manually or automatically the on or open, It is fixed to the main shaft, a drive gear that rotates with the rotation of the main shaft, is formed with a large gear from said drive gear, meshed symmetrically on either side of the drive gear, the engaging projection on each of the gear side connecting the respective transmission gear conventional and pre protruding the parts, the respective engaging projections of Setsujo status or manual switching state of each central portion and conventional or pre Bei definitive automatically for each transmission gear of the conventional and pre each Separated by a predetermined distance from the line segment
Disposed in a position parallel Te, at one end of the hook is formed together with the customary and engaged with the engaging projections of the transmission gear of the preliminary and provided at one end of the hook to swing <br/> Provided at the opposite end
Each drive rod conventional and extras at the fulcrum to become the support pin is rotatably supported to be, the hook portion and the support pin definitive to the drive rod of the conventional and pre
A connecting pin is provided in the middle, and a common and spare transmission rods, one end of which is pivotally supported via the connecting pin, and a driven portion is supported by the other end of each of the common and spare transmission rods. Common and spare cams whose main driving parts are supported by a through shaft that is rotatably disposed through the casing; and a casing outside the through shaft that supports the main driving parts of the common and spare cams. A switching switch, comprising a normal and a spare operation handle fixed to an end. 2. A diverter switch according to claim 1, before Symbol one end pivotally supported on the main shaft, and guidance drive rod which coupling protrusions is fixed to the other end, of the pointer drive rod A long hole for inserting and engaging the connecting protrusion is formed at one end, and the other end of the pointer transmission rod is rotatably supported at the other end by a pointer penetration shaft penetrating the casing; A switching switch fixedly attached to an outer end of a casing of a pointer penetrating shaft that supports an end side, and an opening / closing display pointer that indicates each state of normal insertion, preliminary insertion, and opening. 3. A movable contact fixed to the main shaft is rotated to selectively apply or open to each of the regular and spare fixed contacts, and the input or open is manually or automatically switched and after the switching. A switching drive for displaying the state of closing or opening with an open / close display indicator, a driving rod for a pointer having one end pivotally supported by the main shaft and a connecting projection fixed to the other end; An elongate hole for inserting and engaging the connecting projection is formed at one end, and the other end is rotatably supported by a penetrating shaft for penetrating the casing. A switching switch, which is fixed to an outer end of a casing of a penetrating shaft for a pointer that supports the other end side, and that includes an opening / closing display pointer that indicates each state of normal insertion, preliminary insertion, and opening.