JP2000188039A - Rotary switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary switch capable of surely recognizing on-off state thereof. SOLUTION: This rotary switch has a substrate 21 provided with an electrode 22 and a stopper 25 projecting from a step part 23 to a hollow hole 24, and a driver plate 26 provided with a moving contact 29 and a protrusion 28a projecting outwardly. The switch is constituted so that the protrusion 28a abuts on the stopper 25 of the substrate 21 by rotation of the driver plate 26, and at the same time, the moving contact 29 is electrically connected with the electrode 22 of the substrate 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary switch for turning on and off a switch by rotating a rotating body such as a driver plate.

[0002]

2. Description of the Related Art Conventional rotary switches of this type include:
One disclosed in Japanese Patent Application Laid-Open No. H10-12093 is known.

Hereinafter, a conventional rotary switch will be described with reference to the drawings. FIG. 6 is an exploded perspective view of a conventional rotary switch, and FIG. 7 is a side sectional view of a rotating body in the conventional rotary switch.

[0006] In FIGS. 6 and 7, reference numeral 1 denotes a mounting plate, and a through hole 2 is provided near the outer surface of the mounting plate 1 from the upper surface to the lower surface. Reference numeral 3 denotes a resin switch plate. The switch plate 3 is provided so as to be in contact with the upper surface of the mounting plate 1 and has a pair of switch contacts 4 on the upper surface.
A circuit pattern 5 is provided from the switch contact 4 so as to be electrically connected to the switch contact 4.
Reference numeral 6 denotes a metal slider. The slider 6 is fixed to the upper surface of the switch plate 3 so as to be electrically connected to the circuit pattern 5. Is provided with a contact portion 7. Reference numeral 8 denotes a rotating body made of resin. The rotating body 8 includes a cylindrical knob portion 9 and a flange portion 10 protruding outward from the knob portion 9. Has a pair of protrusions 11 formed at equal intervals in a circumferential shape. Reference numeral 12 denotes a cover made of a resin. A hole 13 is provided substantially at the center of the cover 12, and a small projection 14 is provided at a lower portion. The hole 13 of the cover 12 fits with the knob 9 of the rotating body 8, and the small projection 14 of the cover 12 fits in the through hole 2 of the mounting plate 1.

[0005] Next, the operation of the conventional rotary switch configured as described above will be described.

When the knob 9 of the rotator 8 is rotated, the projection 11 of the rotator 8 comes into contact with the contact 7 of the slider 6,
This contact causes the contact portion 7 of the slider 6 to move downward. By contacting some of the switch contacts 4 provided on the switch plate 3 with the contact portions 7 of the slider 6, the pair of switch contacts 4 and the slider 6 are electrically connected to each other. And the circuit pattern 5 of the switch plate 3
Thus, an output signal is output to the other computer (not shown) or the like to recognize the switch as ON. When the knob 9 of the rotating body 8 is further rotated, the contact 7 of the slider 6 moves upward,
Since the contact portion 7 of the slider 6 and the protrusion 11 of the rotating body 8 are separated from each other and do not contact each other, the output signal of the off state from the circuit pattern 5 of the switch plate 3 is output from the other computer (not shown). )).

[0007]

However, in the above-described conventional configuration, the protrusion 11 provided at the lower portion of the rotating body 8 is not provided.
The on / off state of the switch is recognized based on the presence or absence of contact between the slider and the contact portion 7 of the slider 6. This depends only on the contact pressure. In this case, since the contact pressure between the projection 11 on the rotating body 8 and the slider 6 is very small, there is a problem that it is difficult to recognize the on / off state of the switch. Was.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a rotary switch capable of reliably recognizing the on / off state of the switch.

[0009]

In order to achieve the above object, a rotary switch according to the present invention is provided with at least one electrode on an upper surface, has a hollow hole substantially at the center, and has a stepped portion surrounding the hollow hole. A substrate provided with a stopper protruding from the step portion toward the hollow hole, a slider rotatably disposed on the substrate and sliding on the substrate, and having a driver groove on the upper surface. A driver plate having a tubular portion provided substantially in the center and a projecting portion projecting outward from the tubular portion and a through hole provided substantially in the center of the tubular portion; and a hollow hole in the substrate. A middle terminal having a cylindrical portion that is inserted into the through hole of the driver plate from below and pivotally attaches the driver plate, and a terminal portion provided from the bottom surface to one side surface of the substrate; And an external terminal electrically connected to the electrode and provided from a side surface to a lower surface on a side facing the terminal portion of the middle terminal, and a protruding portion is brought into contact with a stopper of the substrate by rotation of the driver plate. The slider is configured to be electrically connected to the electrode of the substrate at the same time as the contact is made. According to this configuration,
It is possible to provide a rotary switch capable of reliably recognizing the on / off state of the switch.

[0010]

According to the first aspect of the present invention, at least one electrode is provided on the upper surface, a hollow hole is provided substantially in the center, and a step is provided so as to surround the hollow hole. A substrate provided with a stopper protruding from the step portion toward the hollow hole, a slider rotatably disposed on the substrate and sliding on the substrate, a driver groove provided on an upper surface, and a substantially central portion provided; A driver plate having a cylindrical portion provided with a protruding portion protruding outward from the cylindrical portion and a through hole provided substantially at the center of the cylindrical portion; and a hollow hole of the substrate and the driver plate. A middle terminal having a cylindrical portion for pivotally connecting a driver plate inserted through the through hole from below and a terminal portion provided from the bottom surface to one side surface of the substrate, and electrically connected to the electrode on the upper surface of the substrate. An external terminal provided from the side surface on the side facing the terminal portion of the middle terminal to the lower surface, and the slider comes into contact with the stopper of the substrate by rotation of the driver plate. Is configured to be electrically connected to the electrode of the substrate. According to this configuration, the protrusion contacts the stopper of the substrate by the rotation of the driver plate, and at the same time, the slider is connected to the electrode of the substrate. When the switch is turned on, the protrusion on the driver plate and the stopper on the substrate come into contact with each other, so that the protrusion and the stopper come into contact with each other. Since it is easy to recognize the state of the switch, it is possible to reliably recognize the ON / OFF state of the switch.

According to a second aspect of the present invention, there is provided a film substrate provided with at least one electrode on an upper surface, and a film substrate provided on an inner bottom surface and external terminals electrically connected to the electrodes on the film substrate. A lower case integrally provided with one end, and a middle terminal provided above the lower case and having a hole located substantially above the center of the film substrate and the other end of the outer terminal integrally formed; An upper case provided with a hole for inserting the operation shaft substantially at the center, and further provided with a stopper protruding from the inner wall surface toward the center, and a lower portion fitted into the hole for insertion of the operation shaft of the upper case, and A grommet portion inserted into the hole of the middle terminal, a protruding portion protruding outward from the grommet portion and a slider sliding on the film substrate, and a driver on the upper surface. And an operation shaft provided with a slider, wherein the protrusion is brought into contact with the stopper of the upper case by rotation of the operation shaft, and at the same time, the slider is electrically connected to the electrode of the film substrate. According to this configuration, the protrusion is brought into contact with the stopper of the upper case by the rotation of the operation shaft, and at the same time, the slider is electrically connected to the electrode of the film substrate. In the ON state, the protruding portion of the operation shaft and the stopper of the upper case come into contact with each other. This makes it easy to recognize the state where the protruding portion and the stopper are in contact with each other. This has the effect that the state can be reliably recognized.

Embodiment 1 Hereinafter, a rotary switch according to Embodiment 1 of the present invention will be described with reference to the drawings.

FIG. 1 is an exploded perspective view of a rotary switch according to Embodiment 1 of the present invention, and FIG. 2 is a side sectional view of the rotary switch.

In FIG. 1 and FIG. 2, reference numeral 21 denotes a resin substrate, and a pair of electrodes 22 is provided on the upper surface of the substrate 21. A step 23 is provided at the center of the substrate 21. A hollow hole 24 is provided substantially at the center of the step 23, and a stopper 25 protruding toward the center is provided at a part of the inner surface. Provided. Reference numeral 26 denotes a driver plate made of a metal such as SUS304. The driver plate 26 has a through hole 27 at substantially the center, and has a cylindrical portion 28 protruding toward the step 23 on the substrate 21. The cylindrical portion 28 is provided with a protruding portion 28a that protrudes outward, and a slider 29 that is in contact with the electrode 22 provided on the upper surface of the substrate 21 is integrally provided below the driver plate 26. . Further, a driver groove 30 is provided on the upper surface of the driver plate 26. 31 is a metal middle terminal,
One end of the middle terminal 31 is provided with a hollow hole 24 and a driver plate 26 in the substrate 21 from the lower surface of the substrate 21.
A cylindrical portion 32 is provided to pass through the through hole 27 of the driver plate 2.
6 is rotatably connected to the substrate 21. A terminal portion 33 is provided at the other end of the middle terminal 31, and the terminal portion 33 contacts one side surface of the substrate 21. Reference numeral 34 denotes an external terminal.
Is electrically connected to the electrode 22 on the upper surface of the substrate 21 and is provided from the side surface of the substrate 21 facing the terminal portion 33 of the middle terminal 31 to the lower surface.

Next, a method of assembling the rotary switch according to the first embodiment of the present invention will be described.

First, a pair of electrodes 22 is printed on the upper surface of the substrate 21. Next, the external terminals 34 are printed from the upper surface of the substrate 21 to the lower surface via one side surface.

Next, the substrate 21 on which the electrodes 22 and the external terminals 34 are printed is passed through a baking furnace (not shown), and the electrodes 22 and the external terminals 34 are baked on the upper surface of the substrate 21.

Finally, the cylindrical portion 32 of the prepared middle terminal 31 is inserted into the hollow hole 24 of the substrate 21 and the through hole 27 of the prepared driver plate 26, and the tip of the cylindrical portion 32 is swaged. , Driver plate 26
Is rotatably pivoted on the upper surface of the substrate 21.

Next, the operation of the rotary switch according to the first embodiment of the present invention assembled as described above will be described.

The rotary switch is connected to the electrode 22 on the substrate 21.
The external terminal 34 is electrically connected to an external circuit. Then, by inserting a driver (not shown) into the driver groove 30 of the driver plate 26 and rotating the same, the slider 29 of the driver plate 26 and the electrode 22 of the substrate 21 are brought into contact with or separated from each other. Thus, it is electrically turned on and off and functions as a rotary switch.

In the rotary switch according to the first embodiment of the present invention, the protrusion 28 a provided on the cylindrical portion 28 by the rotation of the driver plate 26
The slider 29 is configured to be electrically connected to the electrode 22 of the substrate 21 at the same time as contacting the stopper 25, so that when the switch is turned on, the protrusion 28a of the driver plate 26 Since the stopper 25 on the substrate 21 comes into contact with the stopper 25, it is easy to recognize the state in which the protrusion 28a and the stopper 25 are in contact with each other, so that the on / off state of the switch can be reliably recognized. It has an effect.

Embodiment 2 Hereinafter, a rotary switch according to Embodiment 2 of the present invention will be described with reference to the drawings.

FIG. 3 is a side sectional view of a rotary switch according to Embodiment 2 of the present invention, and FIG. 4 is a top view of a substrate in the rotary switch.

In FIGS. 3 and 4, reference numeral 41 denotes a film substrate made of a film of polyimide or the like, and a pair of silver electrodes 42 is provided on the upper surface of the film substrate 41. Reference numeral 43 denotes a concave lower case made of a resin such as polyphthalamide, and an external terminal 44 made of metal is integrally formed with the lower case 43. The external terminal 44 is connected to the electrode 42 of the film substrate 41. One end electrically connected is protruded inward, and the other end is connected to the lower case 4.
3 is exposed on the outer surface. Reference numeral 45 denotes an upper case made of a resin such as polyphthalamide. The upper case 45 is provided on the upper surface of the lower case 43, and the other end of the outer terminal 44 and the middle terminal 46 made of metal are integrally provided. Is what it is. A hole 47 is provided at one end of the middle terminal 46 so as to be located substantially above the center of the film substrate 41, and the other end of the middle terminal 46 is exposed on the outer surface of the lower case 43. And is bent along the lower surface of the lower case 43. An operating shaft insertion hole 48 is provided at substantially the center of the upper case 45. A stopper 49 is provided on the inner wall surface of the upper case 45 so as to project substantially toward the center. Reference numeral 50 denotes an operation shaft made of metal.
Is fitted into the operation shaft insertion hole 48 of the upper case 45,
At the lower part, an eyelet 51 which is pivotally inserted through the hole 47 of the middle terminal 46 and a slider 52 which comes into contact with the electrode 42 of the film substrate 41 are provided. Also, this operation shaft 5
A driver groove 53 is provided in an upper portion of the lens 0, and a projection 54 projecting outward is provided in the eyelet portion 51.

Next, a method of assembling the rotary switch according to the second embodiment of the present invention will be described with reference to the drawings.

FIGS. 5 (a) to 5 (d) show assembly process diagrams of the rotary switch according to the second embodiment of the present invention.

First, as shown in FIG. 5A, an electrode paste made of a mixture of silver and a resin is printed on the upper surface of the film substrate 41 by screen printing, and then baked at about 235 ° C. for about 1 minute. 42 is printed on the upper surface of the film substrate 41.

Next, as shown in FIG. 5B, after placing the outer terminal 44 and the middle terminal 46 on a mold (not shown),
The polyphthalamide melted at a high temperature is poured into the mold, and the lower case 43 in which one end of the outer terminal 44 is integrally formed; the other end of the outer terminal 44 and the middle terminal 4.
6 form an upper case 45 integrally molded.

Next, as shown in FIG. 5C, the operation shaft 50 having the driver groove 53 formed therein is fitted into the operation shaft insertion hole 48 (not shown) of the upper case 45, and the operation shaft 50 is After inserting the eyelet portion 51 into a hole 47 (not shown) of the middle terminal 46 provided integrally with the upper case 45, the slider 52 is mounted on the eyelet portion 51 in a direction opposite to the insertion direction, and By caulking the eyelets 51, the operation shaft 50 is pivotally connected to the middle terminal 46 of the upper case 45. Next, the film substrate 41 is placed on the inner bottom surface of the lower case 43.

Finally, as shown in FIG. 5D, after the upper case 45 is placed on the upper surface of the lower case 43, the other end of the middle terminal 46 is bent so that the lower case 43 is bent. And the upper case 45 are integrally fixed to produce a rotary switch.

Next, the operation of the rotary switch according to the second embodiment of the present invention assembled as described above will be described.

When a counterpart driver (not shown) is inserted into the driver groove 53 of the operation shaft 50 from above and is rotated, the slider 52 is turned by the rotation of the operation shaft 50.
Contact 2 When the slider 52 and the electrode 42 are in contact with each other, the switch is turned on by the slider 52. On the other hand, by rotating the operation shaft 50 to the opposite side, the slider 52 and the electrode 42 are not in contact with each other, and the switch is turned off. At this time, the operation axis 5
With the rotation of 0, the protrusion 54 provided on the eyelet portion 51 comes into contact with the stopper 49 of the upper case 45, and at the same time, the slider 52 is electrically connected to the electrode 42 of the film substrate 41. Therefore, in the ON state of the switch, the projecting portion 54 of the operation shaft 50 and the stopper 49 of the upper case 45 come into contact with each other, whereby the state in which the projecting portion 54 and the stopper 49 are in contact is recognized. This has the effect that the ON / OFF state of the switch can be reliably recognized.

[0033]

As described above, the rotary switch of the present invention is
A substrate provided with at least one electrode on the upper surface, having a hollow hole at substantially the center, and having a stepped portion surrounding the hollow hole, and a stopper provided with a stopper protruding from the stepped portion toward the hollow hole. A protrusion rotatably disposed on the substrate and sliding on the substrate, provided with a driver groove on the upper surface, and provided with a tubular portion substantially at the center, and protruding outward from the tubular portion; A driver plate provided with a through-hole at substantially the center of the cylindrical portion; a hollow portion of the substrate and a cylindrical portion inserted through the through-hole of the driver plate from below to pivotally mount the driver plate; A middle terminal having a terminal portion provided from the bottom surface to one side surface, and a side surface of the upper surface of the substrate which is electrically connected to the electrode and faces the terminal portion of the middle terminal. And external terminals provided over the lower surface, and the protrusion is brought into contact with a stopper of the substrate by rotation of the driver plate, and at the same time, the slider is electrically connected to an electrode of the substrate. According to this configuration, the protrusion is brought into contact with the stopper of the substrate by the rotation of the driver plate, and at the same time, the slider is electrically connected to the electrode of the substrate. In the ON state, the protrusion on the driver plate comes into contact with the stopper on the substrate. This makes it easy to recognize the state where the protrusion and the stopper are in contact with each other. This has an excellent effect that a rotary switch that can be reliably recognized can be provided.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a rotary switch according to a first embodiment of the present invention.

FIG. 2 is a side sectional view of the rotary switch.

FIG. 3 is a side sectional view of a rotary switch according to a second embodiment of the present invention.

FIG. 4 is a top view of a film substrate in the rotary switch.

FIGS. 5A to 5D are assembly process diagrams of a rotary switch according to a second embodiment of the present invention.

FIG. 6 is an exploded perspective view of a conventional rotary switch.

FIG. 7 is a side sectional view of a rotating body in the rotary switch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Substrate 22, 42 Electrode 23 Step part 24 Hollow hole 25 Stopper 26 Driver plate 27 Through hole 28 Cylindrical part 28a, 54 Projection part 29, 52 Slider 30, 53 Driver groove 31, 46 Middle terminal 32 Cylindrical part 33 Terminal Parts 34, 44 Outer terminals 41 Film substrate 43 Lower case 45 Upper case 47 Hole 48 Operation shaft insertion hole 49 Stopper 50 Operation shaft 51 Eyelet

Claims (2)

[Claims] At least one electrode is provided on an upper surface, a hollow hole is provided at substantially a center, and a step is provided so as to surround the hollow hole, and a stopper protruding from the step toward the hollow hole is provided. And a slider rotatably disposed on the substrate and sliding on the substrate, provided with a driver groove on the upper surface, and provided with a tubular portion substantially at the center, and outwardly from the tubular portion. A driver plate provided with a protruding portion protruding toward the center and a through hole provided substantially at the center of the cylindrical portion; and a driver plate inserted from below into the hollow hole of the substrate and the through hole of the driver plate. A middle terminal having a cylindrical portion to be formed and a terminal portion provided from the bottom surface to one side surface of the substrate, and a terminal portion of the middle terminal electrically connected to the electrode on the upper surface of the substrate and External terminals provided from the side surface on the opposite side to the lower surface, and the protrusion is brought into contact with the stopper of the substrate by rotation of the driver plate, and at the same time, the slider is electrically connected to the electrode of the substrate. Rotary switch configured to work. 2. A film substrate having at least one electrode provided on an upper surface thereof, the film substrate provided on an inner bottom surface, and one end of an external terminal electrically connected to the electrode on the film substrate provided integrally. A lower case, a middle terminal provided above the lower case, and having a hole positioned substantially above the center of the film substrate and the other end of the outer terminal are integrally provided, and are operated substantially at the center. An upper case provided with a shaft insertion hole, and further provided with a stopper protruding from the inner wall surface toward substantially the center, and fitted into the operation shaft insertion hole of the upper case, and a lower portion into the hole of the middle terminal. An eyelet provided with an eyelet portion to be inserted, a protrusion protruding outward from the eyelet portion and a slider sliding on the film substrate, and an operation shaft provided with a driver groove on the upper surface. A rotary switch configured such that the protrusion is brought into contact with a stopper of the upper case by rotation of the operation shaft, and the slider is electrically connected to an electrode of the film substrate at the same time.