JPH0652756A - Operation switch - Google Patents

Abstract

PURPOSE:To provide a switch which can easily deal with the change of the change over form of contacts by providing a common terminal and two fixed terminals on the body central portion and both end portions of an operation switch, and arranging moving contact seesaw-swinging thereon. CONSTITUTION:An operation handle 6 is stuck out from the bracket 10 of a case 9, in which a switch body 1 is built in, and a sliding piece 11 is fitted thereto via a lever 12, a coil spring, and a bar 14. A common terminal 2 is fixed to the central portion of the body 1, and fixed terminals 3a, 3b, to both end portions, and above them a moving contact 4 is connected to the common terminal 2 to be fitted. Further thereon a reversal piece 5 is placed so as to be seesaw-swingable via a support point piece 15. On the reversal piece 5 a sliding piece 11, energized downward by the coil spring, is placed so as to be free in sliding. The moving contact 4 is touched to either of both fixed terminals 3a, 3b by the reversal operation of the operation handle 6 so as to change over contacts smoothly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating switch, and more particularly to a technique for easily dealing with various on / off states of the operating switch.

[0002]

2. Description of the Related Art Conventionally, in the case of an operation switch, FIG.
As shown in FIG. 3, the movable contactor 4 is mounted on the common terminal 2 so that the seesaw can swing, and the movable contactor 4 is selectively brought into contact with the fixed terminals 3a and 3b by operating the operation handle 6. . And in the operation switch shown in FIG.
When the operation handle 6 is neutral, it is off, and when the operation handle 6 swings left and right, it is on. As shown in FIG. 14, two movable contactors 4 are provided, and the movable handle 4a on the right side of FIG. As in (a), (b) and (c), the seesaw is swung to switch the contacts, and in this case, the movable contactor 4b on the left side of FIG.
The contacts are switched as in (e) and (f). Here, in FIG. 14, h <H.

[0003]

However, in the case of such a structure, it is impossible to change to a mode other than the contact switching mode as described above, and when changing to another switching mode. However, the movable contactor 4 having a different shape and the common terminal 2 having a fulcrum structure corresponding to the movable contactor 4 are required, and there is a problem in that it is complicated to support the product type.

The present invention is intended to solve such a problem, and an object of the present invention is to provide an operation switch capable of easily coping with a change in contact switching mode.

[0005]

According to the present invention, a common terminal 2 is provided at the center of a body 1 and fixed terminals 3a and 3b are provided at both ends, and a movable contact 4 is provided above these terminals 2, 3a and 3b. Is an operation switch that is swingably disposed on the seesaw, and a substantially central portion of the movable contactor 4 is connected and fixed to the common terminal 2, and the reversing element 5 is replaceably mounted on the movable contactor 4. The movable contactor 4 and the fixed terminals 3a and 3b are brought into contact with each other by swinging the reversing element 5 through the operation handle 6 so that the movable contactor 4 is brought into contact therewith.

[0006]

The reversing element 5 is replaceably mounted on the movable contactor 4 which is fixedly connected to the common terminal 2, and when the reversing element 5 is replaced, the movable contactor 4 contacts the fixed terminals 3a and 3b. Change the contact switching mode. Therefore, the common terminal 2 and the movable contactor 4, which are conventionally changed, need not be changed, and only the reversal element 5 may be changed. Then, various forms of the reversing element 5 are prepared, and by selectively using them, various contact switching forms can be easily dealt with.

[0007]

1 shows an exploded perspective view, and FIG. 2 shows an assembled state. A switch mechanism portion is incorporated in a body 1, a body 1 is incorporated in a case 9, and a bracket 10 is attached to the case 9. The operation handle 6 is projected from the bracket 10, and the slider 11 is attached to the operation handle 6 via the lever 12, the coil spring 13, and the rod 14 while being urged downward. A common terminal 2 is fixed to the center of the body 1, and fixed terminals 3a and 3b are fixed to both ends of the body 1. The movable contactor 4 is disposed above the terminals 2, 3a, 3b, and the movable contactor 4 is caulked to the common terminal 2. The reversing element 5 is placed on the movable contactor 4, the reversing element 5 is inserted into the receiving recess 16 of the body 1 through the fulcrum piece 15, and the reversing element 5 is held so that the seesaw can swing. . Above the reversing element 5, the slider 1 is urged downward by a coil spring 13.
1 is slidably mounted. Then, when the operating handle 6 is turned over, the slider 11 is slid on the movable contactor 4, the inversionor 5 is swung on the fulcrum piece 15, and the movable contactor 4 is fixed to one of the fixed terminals 3a or the other. The contact is switched by bringing it into contact with the fixed terminal 3b. Two movable contacts 4 are arranged side by side, and a slider 11 is placed so as to straddle these. Then, each movable contactor 4 is switched as shown in FIGS. 3A, 3B, and 3C, that is, the OFF state shown in FIG. 3A and the OFF state shown in FIGS. 3B and 3C. It can be switched.

A slit 17 is formed at the tip of the movable contactor 4 to form a so-called twin contact. In this way, the movable contact and the fixed terminals 3a, 3 made into twin contacts
Since the contact state of b with the fixed contact 3c is further pressed and rolled after the contact due to the swing of the reversing element 5, reliability of the contact is improved and contact welding may be avoided. Further, although two poles are shown in the embodiment, one pole or three poles may be used.

Therefore, the reversing element 5 is replaceably mounted on the movable contactor 4 which is fixedly connected to the common terminal 2, and when the reversing element 5 is replaced, the movable contactor 4 is fixed. That is, the mode of switching the contact that contacts 3b is changed. Then, the common terminal 2 and the movable contactor 4, which are conventionally changed, need not be changed, and only the reversing element 5 may be changed. In such a case, it is possible to easily cope with various contact switching modes by preparing various modes of the reversing element 5 and selectively using them.

As shown in FIG. 4, the movable contact 4
In order to caulk the common terminal 2, the movable contactor 4 may be formed in a round bar shape and inserted into the through hole of the movable contactor 4 to be caulked and connected. 5 to 8 show another embodiment. In this embodiment, the reversing element 5 and the structure for supporting the reversing element 5 on the body 1 so that the seesaw can swing are different from those in the above-described embodiments, and the other structures are the same and therefore omitted.

As shown in FIG. 6, projecting pieces 19 are formed on the upper edges of both sides of the reversing element 5, and the projecting pieces 19 are inserted into the receiving recesses 16 of the body 1, so that the reversing element 5 is fixed to the fixed terminal 3a. , 3b
It prevents you from moving to the side. A recess 18 is formed in the center of the reversing element 5 on both sides in the longitudinal direction, and the fulcrum protrusion 20 is formed on the body 1 at a position displaced from the central portion in the longitudinal direction of the fixed terminals 3a, 3b. The recess 18 is loosely inserted into the fulcrum protrusion 20 at the displaced position.
The reversing member 5 positioned in the length direction is the fulcrum protrusion 20.
It is supported by and can be rocked on the seesaw. The contact switching mode in such a case is shown in FIG.
As shown in (a), it is turned on by the swinging operation to one side of the operation handle 6, and as shown in (b) of the figure, the reversing element 5 is held in a substantially horizontal posture at the neutral position of the operation handle 6. The contact is inverted and turned on, and the on state is maintained even when the inversion element 5 is inverted as shown in FIG.

FIG. 8 shows a switching state of contacts of a switch in which two movable contactors 4 are juxtaposed as shown in FIG.
7A to 7C show the contact switching mode of the movable contactor 4a below the paper surface of FIG. 5C, in which the fulcrum projecting piece 20 is formed at the position shown in FIG. And FIG. 8 (d)
5F to 5F show contact switching modes of the movable contactor 4b above the plane of FIG. 5C, with the fulcrum projecting piece 20 displaced to the side opposite to the position of FIG. The reversing element 5 of FIG. 9 has a contact structure of ON, ON, and ON at three positions including the neutral position and the left and right position of the operation handle 6 for switching the contact. Further, the reversing member 5 in FIG. 10 has two switching positions of the operation handle 6 on the left and right sides that do not include the neutral position, and a contact switching configuration of ON and ON can be obtained at any operation position. The reversing element 5 in FIG.
In the position switching, ON, OFF, ON contact switching is performed. Here, 5a indicates neutral holding.

FIG. 12 shows a comparative example, which is of a high capacity type, in which the reversing element 5 is not provided and the movable contactor 4 is formed in the shape as shown in the drawing, and the common terminal 2 and the movable contactor 4 are connected. The contact spring 21 is used to electrically connect the above.
And in the embodiment of FIG.
Therefore, there are many parts that can be commonly used for the micro load compatible product and the high capacity type product of FIG.

[0014]

As described above, according to the present invention, the substantially central portion of the movable contactor is connected and fixed to the common terminal, the reversing element is replaceably mounted on the movable contactor, and the reversing element is inserted through the operation handle. Since the movable contactor and the fixed terminal are brought into contact with each other by swinging the seesaw, the reversing element is replaceably mounted on the movable contactor connected and fixed to the common terminal. It is possible to change the contact switching mode in which the movable contact comes into contact with the fixed terminal by replacing the child, and it is possible to change only the reversing element without the need to change the common terminal and movable contact that were changed in the past. Often, there are advantages that various kinds of contact switching modes can be easily dealt with by preparing various types of reversing elements and selectively using them.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 shows an assembled state of the same as above, (a) is a side view,
(B) is the sectional view on the AA line of (a).

3 (a), (b) and (c) are explanatory views showing contact switching.

4A and 4B show another connection state of the movable contact and the common terminal of the same, in which FIG. 4A is a plan view and FIG. 4B is a side view.

FIG. 5 shows another embodiment of the above, (a) is a front sectional view,
(B) is a side sectional view and (c) is a plan view with a part omitted.

6A is a perspective view of a reversing element, and FIG. 6B is a perspective view of a supporting portion of the reversing element.

7 (a), (b) and (c) are explanatory views showing switching of contacts as above.

8 (a) to (f) are explanatory views showing the contact switching of the above.

9A is a front view showing the relationship between the reversing element and the fulcrum portion, and FIG. 9B is a perspective view.

FIG. 10 (a) is a front view of an inversion element according to another embodiment of the same, and FIG. 10 (b) is a perspective view.

FIG. 11 (a) is a front view of an inversion element according to another embodiment of the same, and FIG. 11 (b) is a perspective view.

12 (a), (b) and (c) are explanatory views showing switching of contacts of the comparative example.

FIG. 13 is an exploded perspective view of a conventional example.

FIG. 14 is an exploded perspective view of another conventional example.

15 (a) to 15 (f) are explanatory diagrams showing the contact switching of the same.

[Explanation of symbols]

 1 Body 2 Common Terminal 3a Fixed Terminal 3b Fixed Terminal 4 Moving Contact 5 Inverter 6 Operation Handle

[Procedure amendment]

[Submission date] December 14, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] Figure 8

[Correction method] Change

[Correction content]

[Figure 8]

Claims (1)

[Claims] 1. An operating switch in which a common terminal is provided at a central portion of a body and fixed terminals are provided at both ends thereof, and a movable contact is provided above the terminals so as to swing freely on a seesaw. The substantially central part of the movable contact is connected and fixed to
An operation in which the reversing element is replaceably mounted on the movable contact element, and the movable contact element and the fixed terminal are brought into contact by swinging the reversing element through a seesaw through the operation handle. Switch.