JPH05120962A - Switch - Google Patents

Abstract

PURPOSE:To facilitate confirmation of displaying by disposing a display unit in a pushbutton unit. CONSTITUTION:A neon lamp 57 is housed inside a base 64 with a dressed pushbutton 65 mounted thereon. The neon lamp 57 and lead wires 57b, 58b of a resistance 58 are locked in a rib 71 of the base 64. A contact piece 74 connected to a terminal plate is contained inside a cover 61. The contact piece 74, the neon lamp 57 and the lead wires 57b, 58b of the resistance 58 are brought into slide contact with each other. Even if the dressed pushbutton 65 is pushed, the neon lamp 57 is electrified by the contact piece 74. Even though the base 64 is moved, the neon lamp 57 is moved together. Consequently, it is possible to easily confirm a display from the exterior.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch having a display element for displaying the state of contacts.

[0002]

2. Description of the Related Art First, the structure of a conventional piano handle type switch will be described. The push button switch 5 shown in FIGS. 12 to 15 has a body formed of a synthetic resin body 5a and a synthetic resin cover 5b, and a body locking leg 10 hanging from a pair of opposite side surfaces of the cover 5b. The body locking hole 10a provided is locked to the locking projection 9 of the body 5a for coupling.

Locking claws 11a and 11b corresponding to a pair of locking holes 8 formed on the both sides of the cover 5b on the vertical sides of the two side pieces 2b and 2b of the mounting frame 2 shown in FIG. 16, respectively. Are formed integrally with each other, and a space 12 is formed in the back portion of one of the locking claws 11b for obtaining a bending allowance consisting of a hole penetrating vertically through the outer wall of the cover 5b. It can be elastically bent.

Further, connecting terminal accommodating portions 13 and 14 are formed on both sides of the body 5a, and one connecting terminal accommodating portion 13 accommodates a quick-connect terminal composed of a common terminal plate 15, a lock spring 16 and a release button 17. In the other connection terminal accommodating portion 14, the terminal plate 18, the locking spring 19 and the second
The release button 2 that accommodates the terminal plate 20 and the lock spring 21 that form the connection terminal portion of the first connection terminal, and is common to the first and second connection terminal portions.
Holds 2.

An opening / closing body 24 is arranged in contact with and connected to a support plate 15a extending from the end of the common terminal plate 15. The terminal plate 18 is provided with an extending piece 18a,
The extending piece 18a extends over the partition 14a and extends into the central storage portion 23, and is further adjacent to the wall wall 14a side. The extending piece 18a is provided with a fixed contact 25a.

The terminal plate 20 is extended along the inner wall of the body 5a into the central accommodating portion 23, its tip is bent along the partition wall of the connecting terminal accommodating portion 13, and the end of the bent piece 20a is bent. A fixed contact 25b corresponding to the fixed contact 25a is provided. The opening / closing body 24 is formed of a conductive plate, and is inserted into the central storage portion 23. The protrusions 28 provided at the lower ends of both ends are fitted into the V-shaped recesses 27 provided on the side walls of the central storage portion 23 so that the lower end edge is formed. It is rotatable about the lower portion of the V-shaped recess 27 while being in contact with the support plate 15a.

The movable contacts 29 provided on both upper surfaces of the opening / closing body 24 are fixed to the fixed contacts 25a and 25b in response to the rotation.
To the common connection terminal part and the first or second
It is designed to be turned on and off between the connection terminal section of. A reversing mechanism configured to reversely drive the opening / closing body 24 includes a coil spring 30, a reversing handle 31, a push button handle 32 and a slide cam 33 shown in FIG.

A lower portion of the coil spring 30 is locked to a spring seat 24a provided on an upper edge of a lateral piece of the opening / closing body 24, and an upper portion of the coil spring 30 is inserted into a cylindrical portion 31a projecting integrally with a lower portion of a reversing handle 31. By doing so, the opening / closing body 24 is driven to be reversed according to the movement of the reversing handle 31 in both directions. The reversing handle 31 is inserted into the recess 51 from below into a hole 52 opened at the bottom of the recess 51 of the cover 5b,
Inverted triangular shafts 31c provided on both sides of the lower tubular portion 31a of the reversing handle 31 are rotatably supported by bearings 50 on the inner wall of the cover 5b, and on both sides of the rectangular parallelepiped portion 31b above the reversing handle 31. Engaging projections 34, 34 engaging with the slide cam 33 are provided on the upper portion in a protruding manner.

The push button handle 32 is housed in the recess 51 so as to be vertically movable by engaging the locking projections 36, 36 in the vertical locking grooves 35 formed on the inner wall surfaces of both sides of the recess 51 of the cover 5b. 2 and opened downward from the flat piece 37b.
A hole 3 in which a return spring 37 formed by integrally extending two return spring pieces 37a, 37a downward is formed in a flat piece 37b.
7d is attached to the lower surface of the push button handle 32 by inserting a protrusion (not shown) protruding from the lower surface of the push button handle 32, and the return spring pieces 37a, 37a of the return spring 37 are attached.
The tip is elastically urged upward by elastically contacting the bottom of the recess 51.

As shown in FIG. 15, the slide cam 33 is formed by a substantially elastic thermoplastic resin such as polyacetal into a substantially rectangular shape, and the engaging projection 34 of the reversing handle 31 is formed on the lower surface of the opposing side portion. And a pair of spring pieces 33a, 33a integrally projecting in a C-shape are provided at the center of the other side portion, and between the tips of the spring pieces 33a, 33a. The projection 32A (FIG. 17A) formed on the lower surface of the push button handle 32 is inserted, the slide cam 33 is slidably mounted on the lower surface of the push button handle 32, and the slide pieces 33a and 33a are elastically slid. It is designed to give a restoring force in the direction of movement.

The push button switch 5 thus constructed is shown in FIG.
From the bottom to the window hole 6 of the metal mounting frame 2 shown in FIG.
When the lower end of the vertical side of one side piece 2b of the mounting frame 2 is brought into contact with the upper surface of the periphery of the cover 5b so as to be fitted with b, the engaging claw 11a on the fulcrum side can be rotated by using this abutment point as a fulcrum. Is engaged in the locking hole 8, and the lower end of the vertical side of the other side piece 2b presses the locking claw 11b inward by the bending allowance of the space 12 and the elastic force of the material of the cover 5b. After overcoming 11b, the locking claw 11b is engaged with the locking hole 8. Locking claw 1
The push button switch 5 fixedly locked by inserting the lock holes 1 and 1a into the lock holes 8 and 8 causes the push button handle 32 to protrude from the window hole 6 of the mounting frame 2.

A piano handle 43 is attached to the push button switch 5 thus mounted on the mounting frame 2. As shown in FIG. 15, a fulcrum rib 43a provided on one side edge of the piano handle 43 is rotatably locked in a recess 54 on one side of the cover 5a, and is formed on the other side edge of the piano handle 43. The locking foot 43b is locked and mounted in the locking space 47 on the other side of the cover 5a so as to be vertically movable.

By pressing the other side of the piano handle 43, the piano handle 43 can be rotated about the fulcrum rib 43a as a fulcrum. By pushing and rotating the piano handle 43, the push button handle 32 is pushed. It can be driven. Next, the operation of the piano handle type switch will be described with reference to FIGS. 12, 13, and 17 to 20.

First, from the state of FIG. 12, the piano handle 4
3 is pushed down, as shown in FIGS. 17 to 19, the push button handle 32 is pushed down against the return spring piece 37a,
When the push button handle 32 is pushed down, the slide cam 33 descends, and one end of the slide cam 33 (the left side in FIG. 18B) has an inversion handle in which the vicinity of the base of the inner inclined surface of the engaging cam body 38 is inclined. Above 31 (FIG. 18)
When the push button handle 32 is further pressed against the engaging protrusion 34 on the left side in (b), the engaging protrusion 34 is pushed down along the inner inclined surface of the engaging cam body 38, and the reversing handle 31 is rotated reversely.

In this case, when the push button handle 32 is pushed down and the reversing handle 31 is reversed, the engaging protrusion 34 is formed in the state shown in FIG.
8 and FIG. 19 (b), it rotates counterclockwise, and in accordance with this rotation, the engaging projection 34 causes the engaging cam body 38 to resist the spring piece 33a, as shown in FIG. 19 (b). Even if the reversing handle 32 slides to the left side and the reversing handle 32 rotates more than the horizontal position during the reversal of the reversing handle 32 and the other hooking protrusion 34 rises, the slide cam 33 slides to the left side. End (right side in FIG. 20 (b))
The engaging cam body 38 is located on the left side of the engaging protrusion 34 on the right side, so that it does not hinder the reversing rotation of the reversing handle 31.

Here, the engaging projection 34 of the reversing handle 31
If an inner inclined surface is formed on the inner side of the above, the inner inclined surface can escape so that the engaging cam body 38 located inside does not interfere when the engaging projection 34 rotates upward. Also,
As described above, when the inversion handle 31 is inverted and rotated by pushing down the push button handle 32, the slide cam 33
By reversing the reversing handle 31 while sliding the slide cam 33 against the spring piece 33a, the reversing handle 31 and the slide cam 33 can smoothly rotate and reverse the reversing handle 31 without receiving sliding friction resistance. it can.

When the reversing handle 31 is rotated in the reverse manner as described above, the coil spring 30 is reciprocally rocked and the opening / closing body 24 is reversed so that the movable contact 29 is separated from the one fixed contact 25a in contact therewith. , The other fixed contact 25b is contacted. When the pushing down force of the piano handle 43 is released after this inversion, the return spring piece 37a of the return spring 37 is released.
Then, the push button handle 32 is pushed up, and the piano handle 43 also returns to its original state. At the same time, the slide cam 33 also slides back to the central portion by the spring force of the spring piece 33a, and becomes as shown in FIG. Piano handle 4 in this state
If 3 is pushed down, the opening / closing body 24
Can be reversed. After this inversion, if the pushing down force of the piano handle 43 is released, the state shown in FIG. 17 is restored.

[0018]

By the way, the conventional switch is a so-called piano handle type push button switch,
A display unit including a neon lamp 57 for displaying the state of the contact is provided. That is, as shown in FIG. 14, a series circuit of the neon lamp 57 and the resistor 58 is connected between the terminal plates 18 and 20, and the display window 59 of the cover 5b is connected.
Was placed in the cover 5b below.

In such a structure, the push button handle 3
2, slide cam 33, return spring 37, reversing handle 3
Although the push button handle 32 of the push button portion including the coil spring 30 and the like moves up and down, the display portion such as the neon lamp 57 does not move up and down and is located inside the cover 5b.
In the case of such a conventional example, there is a problem that the neon lamp 57 becomes distant from the display window 60 (FIG. 15) of the piano handle 43 and is difficult to see.

The present invention has been made in view of the above points, and provides a switch having a display portion arranged on a push button portion so that the display can be easily confirmed.

[0021]

SUMMARY OF THE INVENTION The present invention has a pair of terminal plates connected to a power source and a movable contact facing a fixed contact fixed to at least one of the terminal plates to open and close the contacts reversibly. An opening / closing body, a push button part that moves in the pushing direction by a pressing operation to drive the opening / closing body, a display part arranged in the push button part to display the state of the contacts, and one end is connected to the terminal board and the other end is connected to the display part. And a contactor which makes sliding contact with the lead wire.

[0022]

Thus, the display section in the push button section and the terminal board are energized via the contactor, and the display section provided in the push button section facilitates the confirmation of the display by the display section from the outside. There is.

[0023]

Embodiments of the present invention will be described below with reference to the drawings. The mechanism for reversing the opening / closing body 24 by the vertical movement of the push button is the same as the conventional one, and a part having a different structure or arrangement will be described in detail. That is, in FIGS. 1 to 3, a cover 61 that penetrates vertically has a storage portion 63 in which a vertically movable display block 62 is arranged. A neon lamp 57 and a resistor 58 are arranged on the upper surface of the base 64 of the display block 62, and the neon lamp 57 is arranged substantially at the center of the base 64.

A makeup push button 65 is vertically movably arranged on the upper surface of the base 64, and a transparent display window 68 is attached to a hole 67 at the center of a step portion 66 on the upper surface. Retaining pieces 69 having elasticity are vertically provided at the four corners of the lower surface of the makeup push button 65, and are inserted into the recesses 70 of the base 64 to be engaged with the inner edge portions and attached to the base 64. .. Neon lamp 5
The lead wire 57a of No. 7 and the lead wire 58a of the resistor 58 are connected to each other, and the tips of the other lead wires 57b and 58b are bent in a substantially J shape, and hooked on the rib 71 projecting from the end of the base 64. I try to stop or wind it. A pressing piece 72 for pressing the lead wire 57b of the neon lamp 57 and the lead wire 58b of the resistor 58 from above is provided so as to project from the lower surface of the makeup push button 65.

Engaging pieces 73 having elasticity are provided on both sides of the base 64. The engaging pieces 73 are locked to the inner edge of the cover 61 to restrict the upward movement and to move downward. It is possible to move to. The slide cam 33 and the return spring 37 are arranged on the lower surface of the base 64.
These configurations are the same as conventional ones. As shown in FIG. 1, the conductive and elastic contactor 74 has an upper portion formed in a substantially J shape and a lower portion formed in a substantially L shape. The contacts 74 are arranged on the inner surface of the cover 61, and the lower parts of the contacts 74 are connected to the upper surfaces of the terminal plates 18 and 20, respectively. The connection is made by pressing the cover 61 or the like.

As shown in FIG. 3, the upper portion of the contactor 74 is located outside the lead wire 57b of the neon lamp 57 and the lead wire 58b of the resistor 58 and is slidably in contact therewith.
FIG. 5 shows the arrangement of the terminal plates 18, 20 and the common terminal plate 15, and FIG. 6 shows an electric circuit diagram. As shown in FIG. 6, the neon lamp 57 and the resistor 58 are connected to the terminal plates 18, 20.
The neon lamp 57 is turned off when the load is energized by connecting the contacts between them, and the neon lamp 57 is turned on when the energization of the load is cut off. This switch is used, for example, in a circuit of a three-way switch.

FIG. 3 shows a state where the makeup push button 65 is not pushed, and FIG. 4 shows a state where the makeup push button 65 is pushed. Here, when the makeup push button 65 is pushed, the base 64 is also lowered, and accordingly,
Lead wires 57b, 58 of neon lamp 57 and resistor 58
b also comes down while keeping contact while sliding on the contactor 74. When the makeup push button 65 is released, the opening / closing body 24 reverses to open / close the contact point and move upward to return.

With this structure, the neon lamp 57 can be disposed in the push button portion including the makeup push button 65, the display block 62, etc., and the neon lamp 57, which is the display portion, as the push button portion moves up and down. Also moves up and down, making it easy to check the display. Further, when the neon lamp 57 is turned on when the load is off as in this embodiment, 2
One terminal board 18, 20, opening / closing body 24, reversing handle 3
1, the slide cam 33, the coil spring 30, the release button, etc. can be commonly used.

By the way, a pair of locking claws 75 are provided on both sides of the cover 61 of the present switch so as to be mounted on a general standardized mounting frame 3 (FIG. 4). A recess 76 is formed for mounting on the mounting frame. (Embodiment 2) FIGS. 7 to 11 show a second embodiment, which has a circuit configuration as shown in FIG.
The configurations of the push button portion, the display portion, the contactor 74, etc. are the same as those in the previous embodiment. That is, the opening / closing body 24 and the terminal plate 18 are opened and closed by the contact as in the previous embodiment, but are not opened and closed by the contact with the other terminal plate 20 'and the terminal plate 20' is not.
A series circuit of a neon lamp 57 and a resistor 58 is connected between the terminal plate 18 and the terminal plate 18.

This indicates that the power is connected to the terminal boards 18 and 20 ', so that the neon lamp 57 is lit to indicate that the power is supplied to this switch.

[0031]

As described above, the present invention has a pair of terminal plates connected to a power source and a movable contact facing a fixed contact fixed to at least one of the terminal plates to open and close the contacts reversibly. An opening / closing body, a push button part that moves in the pushing direction by a pressing operation to drive the opening / closing body, a display part arranged in the push button part to display the state of the contacts, and one end is connected to the terminal board and the other end is connected to the display part. Since it has a contact for sliding contact with the lead wire of, the display part in the push button part and the terminal board are energized via the contact part, and the display part provided in the push button part displays from the outside. This has the effect of making it easy to confirm the display by the section.

[Brief description of drawings]

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

FIG. 2 is a plan view of the above switch.

FIG. 3 is a cross-sectional view of the above switch.

FIG. 4 is a sectional view showing a state in which a makeup push button of the above switch is pushed in.

FIG. 5 is a diagram showing an arrangement configuration of the above terminal plate.

FIG. 6 is an electric circuit diagram of the above switch.

FIG. 7 is a plan view of the switch according to the second exemplary embodiment.

FIG. 8 is a sectional view of the above switch.

FIG. 9 is a cross-sectional view showing a state in which a makeup push button of the above switch is pushed in.

FIG. 10 is a diagram showing an arrangement configuration of the above terminal plate.

FIG. 11 is an electric circuit diagram of the above switch.

FIG. 12 is a cross-sectional view of a conventional push button switch.

FIG. 13 is a sectional view of a conventional push button switch.

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

FIG. 15 is an exploded perspective view of a conventional example.

FIG. 16 is a perspective view of a mounting frame.

FIG. 17 is an operation explanatory diagram of a conventional example.

FIG. 18 is an operation explanatory diagram of a conventional example.

FIG. 19 is an operation explanatory diagram of a conventional example.

FIG. 20 is an operation explanatory diagram of a conventional example.

[Explanation of symbols]

 18 terminal plate 20 terminal plate 24 opening / closing body 25a fixed contact 25b fixed contact 29 movable contact 57 neon lamp 57b lead wire 58 resistance 58b lead wire 74 contactor

Claims (1)

[Claims] 1. A pair of terminal plates connected to a power source, an opening / closing body that has a movable contact facing a fixed contact fixed to at least one of the terminal plates, and that opens and closes the contacts in a reversible manner. A push button part that moves in the direction to drive the opening and closing body,
A switch comprising: a display unit arranged in a push button unit for displaying a state of a contact; and a contactor having one end connected to a terminal plate and the other end in sliding contact with a lead wire from the display unit.