JPS63239746A - Switch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a switch that opens and closes a load by reversing the operation of an operator.

[Prior Art] Conventionally, among this type of switches, in a switch having a structure in which the contacts are brought into sliding contact, when one end of the switch 5 is pressed, as shown in FIGS. This rotates, and the pincer 6 formed on the back surface applies a rotational force to the shaft 3 engaged with this, and the shaft 3 rotates in the opposite direction to the rotation of the switch 5. When the groove 2 of the shaft rod 3 supporting the movable frame 7 is located at the water line, the movable frame 7 presses and moves the elastic tongue part 10 of the lower terminal plate 9. Therefore,
The contact 8 riveted to the central elastic tongue of the movable frame 7 also slides on the contact surface of the contact 16 of the upper terminal 15. Movable frame 7
When the groove 2 that supports passes through the horizontal line, the right movable frame 7 moves downward due to the return force of the elastic tongue lO of the lower terminal plate 9.
The left movable frame 7 moves upward and at the same time the upper terminal 1
The contact 1B of the switch 5 and the contact 8 of the movable frame 7 quickly separate, cutting off the circuit, and the movable frame 7 comes into contact with the control plate 17 and stops.Next, when the other end of the switch 5 is pressed, the opposite operation as described above occurs. The contacts 8 and 16 were brought into contact to connect the circuit.

[Problems to be Solved by the Invention] In the conventional switch as described above, the movable frame 7 has the grooves 2 formed on both sides of the shaft rod 3 and the elastic tongue portion 10 provided at the center of the lower terminal plate 9. Since it is always sandwiched between the upper end notch 11 and the upper end notch 11, heat may be generated in the upper end notch 11, which may cause trouble in opening and closing the switch. In addition, the switch 5 and the shaft 3
Not only is the assembly very complicated because the mounting direction in which the terminal board 9 is inserted and fixed is restricted, but also movable frames 7.7 are arranged on the left and right sides of the shaft rod 3. Otherwise, there was a drawback that stable opening and closing operations could not be obtained. Further, in other switch opening/closing devices, heat may be generated in the support portion of the movable contact, causing problems.

Furthermore, when a high-strength skewer-shaped fluorescent lamp is used as a load, for example, an overcurrent flows when the switch is turned on, causing an arc and causing the contacts to weld, preventing the switch from reversing and causing the contacts to fail to open. The problem was that it was possible. Furthermore, there was a desire for a switch that would not become incapable of opening and closing even in the event of an instantaneous short-circuit current that occurs when a wire is incorrectly connected during wiring work.

The present invention solves the problem described in item L, and provides a switch that improves the durability and reliability of the contact portion and can reliably open and release the contact even if the reversal operation of the operator is reduced. The purpose is to

[Means for Solving the Problems] In order to solve the above problems and achieve the above objects, the present invention is characterized by the following configuration. In other words, in a switch in which a switch mechanism and a connecting terminal part are housed in a body formed by a case body and a top lid, and a switch mechanism that opens and closes a fixed contact and a movable contact by operating an operator pivotally supported on a jacket. an upper lid attached to the upper lid, a shaft provided on the upper lid, the operator fitted into the shaft from below and pivotally supported and reversible, and a movable contact provided at the bottom of the operator. a reversing drive unit; a support piece disposed at the bottom of the case body that pivotally supports the engagement end provided at the lower end of the movable contact and elastically deforms downward; a connecting part provided through the bending part and connected to the connecting terminal part; an elastic piece at the other end of the support piece that rebounds in the insertion direction of the support piece; and a reversing drive part provided on the operator. It is characterized in that a reversible drive section provided at the other end of the engaging end of the movable contactor is supported.

[Example] Next, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a longitudinal sectional view of one embodiment of a switch according to the present invention;
Figure 2 is a plan view of the main parts of the same embodiment, and Figure 3 is A of Figure 1.
-A sectional view, FIG. 4 is a front view of the operator, and FIG. 5 is a perspective view of the movable contact and the support piece.

Here, 20 is a case body, 21 is an upper lid, 30 is an operator, 40 is a movable contact, 41 is a reversible drive section, 42 is a movable contact, and 50 is a support piece.

The case body 20 has a box shape, and a top cover 21 is attached to the case body 20. That is, the upper lid 21 is connected to the case body 2.
It is fixed by caulking the end of the lid stopper plate 22 to the 0 position. A terminal in which a fixed contact 24 is formed is disposed in the case body 20, and a wire insertion hole 2 is inserted into the terminal by a pressing spring 26.
The electric wire inserted from 5 is held. Reference numeral 27 denotes a release button, and the electric wire can be removed by pressing the release button through the insertion hole 28 with a screwdriver or the like in the bending direction of the spring 26.

An operating element 30 is pivotally supported on the upper lid 21, and the operating element 30 rotates around a rotation axis point 31. A reversing drive section 32 that engages with the reversible drive section 41 of the mouth f-motion contact 40 is provided at the lower part of the operating element 30 . In this embodiment, a groove portion 33 having a width slightly larger than the material thickness of the movable contact 40 is provided as the reversing drive portion 32 to ensure engagement between the reversing drive portion 32 and the reversed drive portion 41. .

Further, a reversing drive section 32 of the movable contact 40 provided at the lower part of the operator 30 is provided to hang down from the side wall of the operator 30 on both sides of the movable contact 42 . With this configuration, for example, when an indicator light is built into the inside of the operator 30, it is possible to make the entire surface of the operator 30 bright. In addition, since it is formed symmetrically so that it hangs down on both sides, it will not be twisted by the operator 30, movable contact 40, etc.
No distortion occurs.

The movable contact 40 includes a reversible drive portion 41 that engages with the groove 33 of the operator 30 within the case body 20, a movable contact 42, a notch 43 formed near the movable contact 42, and the movable contact 40. The engagement end 44 is pivoted at a pivot point 51 of the support piece 50 .

The support piece 50 is disposed on the inner bottom of the case body 20, pivotally supports the engagement end 44 provided at the lower end of the movable contact 40, and is elastically deformed downward.

Further, a connecting portion 53 is provided from the lower end of one of the supporting pieces 50 via the bent portion 52 and connected to the connecting terminal portion 23, and a connecting portion 53 is provided at the other end of the supporting piece 50 in the insertion direction of the supporting piece 50. The repulsive elastic piece 54 and the reversing drive section 32 provided on the operator support the reversible drive section 41 provided at the other end of the engagement end 44 of the movable contact 40 .

In this embodiment, the support piece 50 is formed into a substantially M-shape, and a connecting portion 53 is connected to a connecting terminal portion 23 provided from one lower end of the support piece 50 via a bent portion 52.
and an elastic projecting piece 55 that is folded back from the other lower end of the supporting piece 50 in the direction of the connecting portion 53 and comes into elastic contact with the inner bottom of the case body 20.

Since the support piece 50 is formed as described above, its M
The end of the bent portion on the side of the connecting portion of the letter is located at the inner bottom of the case body 20 to pivotally support the retaining end portion 44 and to be elastically deformed downward and back and forth in the reversal direction.

The inner bottom of the case body 20 allows slight elastic deformation of the support piece 50 in the direction of reversal, and also allows large downward elastic deformation.

The bent portion 52 is disposed near the engaging end portion 44 that engages with the pivot point 51 of the support piece 50, which is the base point for the reversal movement of the movable contact 40, and is in elastic contact with the inner bottom of the case body 20. Since the elastic protruding piece 55 is disposed on the supporting piece 50 and the bent end on the M-shaped connecting part side is located at the inner bottom of the case body 20, during the reversing operation of the movable contact 40, In comparison, it is possible to reduce the elastically deformed edges of the bent portion 52, and the slight elastic deformation can be absorbed by the bent portion 52 bent into a wave shape, and the elastic protrusion 55 can also absorb the elastic deformation. It is possible to significantly extend the lifespan.

A notch 43 is formed in the vicinity of the movable contact 42 of the movable contactor 40, and the movable contact 42 is configured to follow the swinging motion of the inverted driving portion 41 with surplus power.

Therefore, it is possible to cope with wear and tear, and even if the operator 30 is touched, the reversible drive portion 41 first swings and then the movable contact 42 is separated from the fixed contact 24, so even if the operator 30 is touched, it does not turn off immediately. Therefore, the movable contact 42 and the fixed contact 24 are turned on by light contact with the operator 30 or vibration.
, there is no fear that OFF will occur, an arc will fly between both contacts, the contacts will wear out, and the durability will deteriorate.

The total length of the reversible drive section 41 from the engagement end 44 of the movable contact 40 is formed short, and the reversal drive section 41 is connected to the operating element 3.
Since it is formed to engage downwardly with the reversing drive section 32 provided at the bottom of the 0, it becomes possible to take a long shutoff distance.

As described above, the engaging end 44 provided at the lower end of the movable contact 40 provided with the movable contact 42 and the retaining end 44 provided at the inner bottom of the case body 20 are pivotally supported and A support piece 50 that is elastically deformed and a bent portion 5 of the support piece 50
The connection terminal portion 23 is connected to the connecting portion 53 provided through the
a reversing drive section 32 connected to and provided on the operator 30;
The movable contact 40 is made to support a reversible drive portion 41 provided on the upper part of the engagement end 44 of the movable contact 40, and the movable contact 42 of the movable contact 40 is opposed to the fixed contact 24.

Therefore, the reversing drive unit 32 of the movable contact 40 provided on the operator 30 moves in a circle or on a plate centering around the rotation axis point 31 of the operator 30. In FIG. 6, the arc is indicated by X. Further, the reversible drive portion 41 of the movable contact 40 is reversed on an arc around the pivot point 51 . In Figure 6, the arc is Y
Shown in The reversing drive section 32 and the reversible drive section 41 are interlocked so that the circular arc X of the reversing drive section 32 and the reversal drive section 4
The amount of overlap S with the arc Y of 1 is determined by the support piece 50 of the pivot point 51.
The fixed contact 24 and the movable contact 42 slide to open and close due to the lower edge of the contact. Since the movable contact 42 opens and closes while sliding against the fixed contact 24, it is possible to reduce the occurrence of arcing and prevent contact welding when opening and closing the switch for 1 hour.
This makes it possible to extend the life of the switch.

[Effects of the Invention] Since the present invention is configured as described above, an overcurrent flows when the switch is turned on, an arc is generated, the contact part is welded, the switch is not reversed, and the contact is not opened. This solves the conventional drawback that it is impossible, improves the durability and reliability of the contact portion, and has the effect that the contact can be opened reliably.

In particular, since the movable contact opens and closes while sliding with respect to the fixed contact, welding of the contacts when the switch is opened and closed can be prevented, and the life of the switch can be extended.

In addition, since the reversing drive part of the movable contact provided at the bottom of the operator is provided hanging down from the side wall of the operator on both sides of the movable contact, it is possible to incorporate an indicator light inside the operator, for example. It becomes possible to brighten the entire surface of the Also,
Since it hangs down on both sides and is formed symmetrically, it has the effect of preventing twisting or other distortion from occurring in the operating element, movable contact, etc. 6 In addition, as a reversing drive part, the When a groove portion having a large width is provided in the groove portion, there is an effect that the reversing drive portion and the reversed driving portion are securely engaged.

A notch is formed in the vicinity of the movable contact of the movable contact, and the movable contact is configured to follow the swinging of the reversed drive part with extra force, so it can cope with wear and prevent the operator from touching it. First, the reversed drive section swings, and then the movable contact separates from the fixed contact, so even if you touch the operator, it will not turn off immediately.
Therefore, there is no risk that the movable contact and fixed contact will turn on and off due to light contact with the operator, causing an arc to fly between both contacts, causing the contact to wear out and reducing durability. It has this effect.

The bent part is disposed near the engagement end that engages with the pivot point of the support piece, which is the base point for the reversal movement of the movable contact, and the elastic piece that comes into elastic contact with the bottom of the recessed case body is attached to the support piece. The bent end on the M-shaped connecting part side is connected to the case body 2.
0, it is possible to reduce the amount of elastic deformation of the bent part compared to during the reversal operation of the movable contact, and the slight elastic deformation is absorbed by the bent part bent into a waveform. At the same time, since the elastic piece can also absorb elastic deformation, it has the effect of significantly extending the life of the switch.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of one embodiment of a switch according to the present invention;
Figure 2 is a plan view of the main parts of the same embodiment, and Figure 3 is A of Figure 1.
-A sectional view, Figure 4 is a front view of the operator, Figure 5 is a perspective view of the movable contact and support piece, Figure 6 is an explanatory diagram of the main parts of the same embodiment, and Figure 7 is the switch. A vertical cross-sectional view showing an example of the conventional technology,
FIG. 8 is a plan view of the movable frame in the conventional example, and FIG. 9 is a plan view of the lower terminal plate in the conventional example. 20---Case body 21. Fist red upper lid 22...Lid stop plate 23...Connection terminal portion 24...Fixed contact 30Φ...Operator 31...Rotation axis point 32-
・Reversal drive part 33 ・Fist/groove 40ψ/Φ movable contact 41... Reversed drive part No. 42... Movable contact
43... Cutout 44... φ engaging end 50... Support piece 51... Pivot point 52...
Bent part 53...Connecting part 54...Rip 1 piece
55...Elastic protrusion agent Patent attorney Elementary 1) Osamu Figure 1

Claims (3)

[Claims] (1) In a switch in which a switch mechanism and a connecting terminal part that open and close a fixed contact and a movable contact by operating an operator pivotally supported on the top cover are housed in a case body formed by a case body and a top cover, the case body a top cover attached to the
A shaft provided on the top lid, the operator fitted into the shaft from below and supported rotatably so as to be freely reversible, a reversal drive unit for a movable contact provided at the bottom of the operator, and the case body. A support piece that is disposed on the inner bottom and pivots on the engagement end provided at the lower end of the movable contact and is elastically deformed downward; a connecting part that is connected to the terminal part; an elastic piece that rebounds in the insertion direction of the supporting piece at the other end of the supporting piece; and an engaging end of the movable contact that is connected to the reversing drive part provided on the operator. A switch characterized by carrying a reversible drive section provided at the other end. (2) The supporting piece is formed into a substantially M-shape, and includes a connecting portion connected to a connecting terminal portion provided from one lower end of the supporting piece via a bent portion, and a connecting portion formed at the other lower end of the supporting piece. 2. The switch according to claim 1, further comprising an elastic protrusion that is folded back toward the connecting portion and comes into elastic contact with the inner bottom of the case body. (3) The support piece is inserted into the bottom of the case body and pivotally supports the engaging end of the movable contact, and is elastically deformed downward and back and forth in the reversal direction, and the amount of downward elastic deformation is The switch according to any one of claims 1 and 2, characterized in that the switch is formed so that a large amount of elastic deformation is allowed in the forward and backward directions of reversal.