JPS6142370B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switching switch that selects one of the contacts connected to two different power supplies and intermittently connects it to a load side contact.

Conventionally, as shown in FIG. 1, a conventional switch of this kind swings between two fixed contacts 101, 101 on the power supply side and selectively connects one of the fixed contacts 10.
The movable contact 10 on the load side is in contact with 1,101.
2 is installed, with the center OFF position and the left and right
The distance between the two power supply side fixed contacts 101 and 1 is short, and a sufficient arc interrupting distance cannot be taken
There is a possibility that contact may occur between 01 and 01.

In order to eliminate the above-mentioned drawbacks of the conventional switching switch, the present invention disposes a load side fixed contact 3 between two power supply side fixed contacts 1 and 2 as shown in FIG. 2, and a movable contact located below. By causing the switch 4 to move in a substantially V-shape as shown by the arrow, sufficient switching time and switching distance can be achieved to interrupt the arc in a narrow space.

To explain an example of the implementation of the present invention with reference to the drawings, as shown in FIG. They are spaced apart from each other, and a load side contact 3 is provided between these two power supply side contacts 1 and 2.

Below these three fixed contacts, as shown in FIGS. 4 and 5, an operating shaft 6 is freely rotatably provided through the main body 5, and one end 36 of this operating shaft 6 is provided.
protrudes from the sides of the main body 5 and can be manually rotated, and switching levers 7, 7 are fixed to both sides. Both ends of a continuous rod 8 extending parallel to the operating shaft 6 are pivoted to the tip of the switching lever 7.
Three contact rods 10 are protruded from this continuous rod 8 at intervals from each other. Note that this embodiment is for a three-phase multicurrent power supply.

A movable contact 4 having two contact parts 12, 12 on both sides passes through the tip of the contact rod 10 so as to be perpendicular thereto, and is constantly pressed in the tip direction by a pushing strip 14. It is now possible to tilt and restore.

The arrangement relationship between the three fixed contacts and the movable contact 4 is such that, for example, when the movable contact 4 moves diagonally downward to the left from the position shown in FIG. 4, the first power supply side contact 1 opens first, and then the load side contact 3 opens,
Conversely, when the movable contact 4 moves upward, the load side contact 3 is moved slightly closer to the contactable side so that it first contacts the load side contact 3 and then contacts the first power supply side contact 1. .

At one end of the continuous rod 8, as shown in FIG.
The base end of a body plate 15 is fixed with a screw 11 so as to extend parallel to the contact rod 10 and operate integrally therewith, and the body plate 15 has a base end fixed to it with a screw 11, and a body plate 15 has a base end protruding in a direction orthogonal to the direction of extension thereof. A sliding rod 16 is attached. This sliding rod 16 is inserted into a substantially V-shaped guide hole 18 bored in the partition wall 17, and the body plate 15 and contact rod 10 move in a substantially V-shape according to the shape of this guide hole 18. It is made to be moist.
Here, the same body plate 15 is simply a substitute for the contact rod 10, and the sliding rod 1 is directly attached to the tip of the contact rod 10.
It is understood that the operation can also be guided by attaching 6.

A switching plate 19 is mounted above the guide hole 18 of the partition wall 17 by a shaft 20, and a lower tip 21 of this switching plate 19 slightly protrudes into the central bent portion 22 of the guide hole 18. The upper protruding rod portion 23 is bent at a right angle, passes through the through hole 24 of the partition wall 17, and is inserted into the elongated hole 26 of the rotating body 25. This switching plate 19 is a sliding rod 16 that moves within the guide hole 18.
It is configured to contact the upper surface of the holder and rotate around a shaft 20.

The rotating body 25 has a cam surface 27 on the lower side, is rotatably mounted coaxially with the switching plate 19 on the opposite surface of the partition wall 17, and has one end rotatably engaged with the partition wall 17 on the side thereof. Stopped and expanding helical spring 2
The other end of 8 is rotatably locked. Depending on the rotation angle of the rotating body 25, a rotational force in the opposite direction is applied to the rotating body 25 from the dead center. The rotating body 25 can rotate left and right within the range of the elongated hole 26 independently of the switching plate 19, and the switching plate 19 can be rotated integrally with the rotating body 25 or independently within the range of the through hole 24 of the partition wall 17. It can be rotated left and right. When the sliding rod 16 descends in the guide hole 18 and reaches the lowermost position in the center, the switching plate 19 disengages the tip 21 from the sliding rod 16, and the switching plate 19 is rotated integrally with the rotating body 25. The guide hole 1 is rotated by the spring force of the spring 28, and the tip 21 protrudes into the guide hole 18.
8, the sliding rod 16 closes the passage on the side from which it has descended, and uses the sliding rod 16 to raise the ascending passage on the opposite side of the guide hole 18. In principle, the switching plate 19 and It may be integral with the rotating body 25. Color-coded markings 30, 3 are provided on the outer peripheral surface 29 of the rotating body 25.
0 is attached, and this can be seen from the display window 32 provided in the outer box 31, and furthermore, even if this switch switch is installed upside down, the current connection status can be known. A rotary display body 34 of the same shape and size, which is connected to this rotating body by a continuous lever 33 and rotates in the same way, is provided on the back side, and is connected from another display window 35 of the outer box 31 in the same way. Display.

The base end of a swing lever 38 is fixed to the other end 37 of the operating shaft 6 that operates switching, and the tip of the traction shaft 40 of the solenoid 36 attached to the main body 5 is attached to the middle part of the swing lever 38. is pivoted, and the other ends of triggering strips 42, 42, one end of which is locked to the main body, are locked to a flange 41 in the middle of this traction shaft 40, and the other ends of the trigger strips 42, 42 are always opposite to the suction direction of the solenoid 39. A force is applied to the operating shaft 6 counterclockwise in FIG. 4, and a force is applied to the movable contact 4 in the direction of the fixed contact above. In the case of manual switching operation, the fourth
As shown in the figure, the operating lever 43 is fitted onto the protruding end 36 of the operating shaft 6 and rotated against the springing force of the triggering strip 42. In the case of automatic operation, the solenoid 39
is excited to similarly rotate the operating shaft 6. Note that it is also conceivable that the triggering strip 42 and the solenoid 36 are attached and operated in opposite directions.

Next, to explain the operation, when the operating shaft 6 is manually or automatically rotated in the direction of the arrow a in FIG. 7 from the state shown in FIG.
The sliding rod 16 connects the left inclined part of the guide hole 18 in the figure,
While pressing and rotating the switching plate 19 together with the rotating body 25 against the expanding force of the helical spring 28, the steps shown in FIG.
When it descends as shown in FIG. 9A and reaches the lowest end, that is, the central bent part 22 of the guide hole 18, as shown in FIG. 10A, the sliding rod 16 and the tip 21 of the switching plate 19 disengage. The switching plate 19 is rotated slightly in the direction of arrow b together with the rotating body 25 by the spring force of the helical spring 28, and the tip 21 of the switching plate 19 closes the passage of the guide hole 18 on the left side in the drawing. During this time, as shown in FIGS. 7 to 10 (b), the contact rod 10 is lowered diagonally to the lower right in the figure together with the same body plate 15, and the movable contact 4 is moved forward as shown in FIG. 8 (b). The first power supply side contact 1 is opened, and then the load side contact 3 is opened as shown in FIG. Ru. The operations up to this point are performed by tilting the swinging lever 38 in the direction of the arrow c in FIG. 3 and rotating the operating shaft in the direction of the arrow a in FIG. The operating shaft 6 is the triggering strip 42,4
When the spring force of 2 begins to rotate back in the direction of the arrow d in FIG. Since it is closed by the tip 21 of the switching plate 19, it is guided to the right and rises diagonally upward to the right. Then, the upper surface of the sliding rod 16 comes into contact with the cam surface 27 at the bottom of the rotating body 25 and pushes it up, and the rotating body 25 pushes it up against the expanding force of the helical spring 28 in the direction of the arrow e in FIG. When the helical spring 28 rotates while being compressed and passes the dead center X of the helical spring 28, as shown in FIG. The 13th
As shown in Figure A, the sliding rod 16 stops when it reaches the upper right end of the guide hole 18. As shown in FIGS. 11 to 13, the contact rod 10 also rises diagonally upward and to the right together with the body plate 15, and the movable contact 4
As shown in Figure 12B, first connect the load side contact 3.
, and then to the second power supply side contact 2 to complete the switching of the power supply. Then, the power source is switched by repeating the same operation.

In short, the present invention consists of two different fixed contacts 1 and 2 on the power supply side installed at a distance from each other, and
A load-side fixed contact 3 installed in the center between the two power supply-side fixed contacts 1 and 2 is used to selectively and alternately short-circuit either of the power supply-side fixed contacts 1 and 2 and the load-side rotating contact 3. Since it consists of a movable contact 4 that repeats a substantially V-shaped operation in conjunction with the rotation and restoration of the operating shaft 6 so as to make contact with and release from the fixed contacts 1, 2, and 3, sufficient The arc interrupting distance can be maintained, switching can be carried out safely and reliably without power sources coming into contact with each other, and since there is only one movable contact and one fixed contact on the load side, the overall size can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a conventional example, Fig. 2 is a front view showing an example of the present invention, Fig. 3 is a front view, Fig. 4 is a rear view, Fig. 5 is a plan view, and Fig. 6 is a front view showing an example of the present invention. Figure 5 A-A
The sectional views and FIGS. 7 to 13 are explanatory diagrams showing the order of operation. 1...First power supply side contact, 2...Second power supply side contact, 3...Load side fixed contact, 4...Movable contact, 6
...Operation axis.

Claims (1)

[Claims] 1. Two different power supply side fixed contacts spaced apart from each other and a load side fixed contact located in the center between the power supply side fixed contacts are respectively installed inside the switching switch main body, and any of the above A movable contact that short-circuits the fixed contact on the power supply side and the fixed contact on the load side is fitted into the tip of the contact rod, and the other end of the contact rod is a switching lever that can pivot in conjunction with a returnable operating shaft. A sliding rod extending in a direction orthogonal to the movable contact is fixed to the tip of the contact rod, and the sliding rod is inserted into a roughly V-shaped guide hole bored in a partition wall inside the main body. At the same time as the insertion, a rotating body that can be rotated left and right by being pushed up by a sliding rod that rises while being guided into the bent part at the center of the guide hole is pivoted to a shaft that passes through the partition wall, and one end is attached to the rotating body. By inserting a helical spring whose other end is locked and whose other end is locked to the main body, the rotating force in the opposite direction is applied to the rotating body depending on the rotation angle of the rotating body from the dead center of the spring. By swinging the tip to the left and right to select the upward direction of the sliding rod, the movable contact is linked to the rotation and restoration of the operating shaft to connect the power supply side fixed contact and the load side fixed contact. A switching switch characterized in that it connects and separates from a fixed contact by repeating a substantially V-shaped movement on a surface including. 2 The movable contact is separated from one power supply side fixed contact by rotation of the operation shaft in one direction, and the movable contact comes into contact with the other power supply side fixed contact by restoring the operation shaft, and the rotation of the operation shaft The switching switch according to claim 1, wherein the operation is obtained by suction of a solenoid and the restoration thereof is obtained by a spring force. 3 The movable contact is separated from one power supply fixed contact by the rotational movement of the operating shaft in one direction, and the movable contact comes into contact with the other power supply fixed contact by restoring the operating shaft, and the rotation of the operating shaft 2. The switching switch according to claim 1, wherein the operation is achieved by manually rotating one end of an operating shaft protruding from the main body, and the restoration thereof is achieved by a spring force.