JP2590764Y2 - Rotary switch - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary switch.

[0002]

2. Description of the Related Art Conventional rotary switches of this type are:
As shown in FIG. 8, a body 810 in which a lead frame (not shown) is insert-molded, a rotor 820 rotatably fitted in the body 810, and a rotor 820 attached to the body 810 to be disengaged from the body 810. And a frame 815 for preventing such a situation.
The rotary switch is connected to the printed circuit board 83
0 is attached. Reference numeral 840 denotes a snap plate that constitutes a push switch, and 850 denotes a key top that presses the snap plate 840.

[0003]

However, the above-mentioned conventional rotary switch has the following problems. That is, the only way to incorporate a small electrical element, for example, a chip resistor, in the body 810 is to connect the chip resistor by hand soldering because the body 810 is made of a synthetic resin. For this reason, mounting the electric element directly on the body 810 is very troublesome. Also, the rotor 8
The stopper mechanism for restricting the rotation of the rotor 20 includes the rotor 8.
The body 810 is an essential part because it needs to be provided between the body 20 and the body 810. Therefore, miniaturization
-There was a certain limit to thinning . In addition, conventional rotors
Click on the rotation of the rotor 820
If a detent mechanism is provided,
As described in JP 86940, the detent
The thickness of the entire rotary switch increases due to the
It was necessary to provide it. Therefore, the detent mechanism
Is provided on the rotary switch.
Hindering the thinning of the device.

The present invention has been made in view of the above circumstances, and an electric element such as a chip resistor can be automatically soldered to a substrate by reflow soldering or the like, and a stopper mechanism for restricting rotation of a rotor. And click on the rotation of the rotor
More compact be provided and the detent mechanism to produce a Kang
An object is to provide a rotary switch that can achieve a reduction in thickness .

[0005]

According to the present invention, there is provided a rotary switch including a substrate on which pattern wiring is formed, a cover directly attached to the substrate, a rotor interposed between the cover and the substrate, and a brush for conducting the pattern wiring attached to the rotor, and dial attached to the rotor, and a stopper mechanism for restricting the rotation of the dial, the rotor outer periphery and the cover
Providing a click on the rotation of the rotor provided on the inner periphery
Detent mechanism and push formed on the substrate
Snap plate for conducting pattern wiring for switches
And a key top for pressing this snap plate.
In the pattern wiring, electrical elements are connected in series
And a detent on the outer peripheral side of the rotor.
The mechanism is formed by removing the inside of this outer peripheral edge
It is assumed that the elastic part is provided.

[0006]

1 is a schematic exploded perspective view of a rotary switch according to an embodiment of the present invention, FIG. 2 is a sectional view of the rotary switch, FIG. 3 is a drawing of a cover, and FIG. Plan view, FIG. (B) is a partial sectional view, FIG.
4 is a plan view of the rotor, FIG. 4A is a plan view of the rotor, FIG. 4A is a plan view, FIG. 4B is a sectional view taken along the line AA of FIG. 4A, and FIG. , FIG. 5 is a drawing of the key top,
6A is a plan view, FIG. 6B is a partial cross-sectional view, FIG. 6C is a bottom view, FIG. 6 is a drawing of a dial, and FIG. (B) is a sectional view taken along line BB of FIG. (A), FIG. (C) is a bottom view, and FIG. 7 is a schematic plan view of the substrate.

The rotary switch according to the present embodiment
Type of pattern wiring, and b over tally switching pattern wiring 110 and the substrate 100 and the push switch pattern wiring 120 is formed, a cover 200 attached directly to the substrate 100, the cover 200 and the substrate 10
0 and the rotor 30
And a brush 400 attached to the rotor 300 for conducting the pattern wiring 110 for the rotary switch.
A dial 500 attached to the
A stopper mechanism for restricting the rotation of the substrate 100, a snap plate 600 for conducting the push switch pattern wiring 120 formed on the substrate 100, and a key top 700 for pressing the snap plate 600. The stopper mechanism is provided between the upper surface 220 of the cover 200 and the lower surface 560 of the dial 500.

On the substrate 100 shown in FIGS. 1 and 7, two types of pattern wirings, that is, a rotary switch pattern wiring 110 and a push switch pattern wiring 120 are formed. First, a plurality of (five in the drawing) chip resistors 114 are provided for the rotary switch pattern wiring 110.
Are connected in series, and the contact portion 11 with which the brush 400 contacts
2 and a common pattern 113 with which the brush 400 is always in contact.

On the other hand, a wiring pattern 1 for a push switch
20 is the pattern wiring 110 for the rotary switch.
And a C-shaped pattern 1 having a substantially C-shape.
21 and a central pattern 122 at the center inside the C-shaped pattern 121. The C-shaped pattern 121 comes into contact with the outer peripheral edge of the snap plate 600, and the central pattern 122 comes into contact with the pressed central portion of the snap plate 600 that is depressed.

As shown in FIG. 3, the cover 200 is formed in a substantially ring shape having an opening 260, and its outer peripheral edge is formed with a hanging wall portion 250 hanging downward. The welding boss 23 is provided on each of the portions 250.
Four protruding portions 230 on which 1 protrudes are formed to protrude. Further, three ribs 240 are formed on the outer peripheral edge of the cover 200.

Further, a convex wall 210 constituting a part of a stopper mechanism is formed on the upper surface 220 of the cover 200 by about 13 inches.
It is formed over an angle of 5 °. Meanwhile, cover 2
A plurality of (five in the drawing) recesses 251 are formed at predetermined intervals on the inner side surface of the hanging wall portion 250 corresponding to the inner peripheral edge of 00. The concave portion 251 constitutes a detent mechanism for producing a click feeling in the rotation of the rotor 300 together with a convex portion 331 of the elastic portion 330 of the rotor 300 described later. The cover 200 thus configured is
It is attached to the substrate 100 by the welding boss 231.

The rotor 300 shown in FIG.
It is movably interposed between the cover 0 and the cover 200, and has an opening 350 formed in the center so as to have a substantially donut shape in plan view. On the lower surface of the flange portion 320 of the rotor 300, a thin portion 340 to which a substantially fork-shaped brush 400 that contacts the pattern wiring 110 for the rotary switch is attached is formed. A substantially C-shaped dial mounting wall 310 is formed on the upper surface side of the rotor 300 so as to surround the opening 350.

Further, the flange portion 320 has an elastic portion 330 formed by removing the inside. The convex portion 331 of the elastic portion 330 and the concave portion 25
1 constitutes a detent mechanism. The thin portion 340 is provided with two welding bosses 341 that are used when the brush 400 is attached.

The outermost peripheral edge of the rotor 300, that is, the outer peripheral edge of the flange portion 320 is slightly larger than the opening 260 of the cover 200, and as shown in FIG. Rotor 300
Does not come off.

The key top 700 has a substantially cylindrical pressing portion 7.
10, a flange 720 protruding from the outer peripheral edge of the lower end of the pressing portion 710, and a protruding portion 730 protruding from the center of the lower surface of the pressing portion 710 are integrally formed. The outer diameter of the flange 720 is set slightly smaller than the inner diameter of the opening 350 of the rotor 300.

As shown in FIG. 6, the dial 500 is formed in a substantially donut shape by opening an opening 510, and a hanging wall 520 is hung from the outer peripheral edge. The dial mounting wall 31 of the rotor 300 is provided on the back surface around the opening 510 of the dial 500.
A substantially C-shaped rotor mounting wall 540 into which 0 is fitted is formed. Further, the lower surface 560 of the dial 500
On the side, a dial-side stopper 550 that forms a stopper mechanism with the convex wall 210 of the cover 200 is formed. In addition, on the outer peripheral surface of the hanging wall portion 520, a plurality of concave portions 5 which are caught when rotating the dial 500 are provided.
30 are provided.

The opening 510 is set slightly larger than the pressing portion 710 of the key top 700 as shown in FIG. Further, the innermost diameter of the rotor mounting wall 540 is set slightly larger than that of the flange 720 of the key top 700. Therefore, when the dial 500 is attached to the rotor 300 in a state where the key top 700 is located in the opening 350 of the rotor 300, the key top 700 is pressed with the pressing portion 710 exposed from the opening 510 of the dial 500. Will not fall off.

The snap plate 600 is formed by shaping a thin metal plate having conductivity into a substantially watch-glass shape, and is attached to the substrate 100 such that the outer peripheral edge thereof contacts the C-shaped pattern 121. . The key top 70 is located at the center of the upper surface of the snap plate 600.
The zero projection 730 is configured to abut. In addition,
A thin sheet 740 is interposed between the snap plate 600 and the key top 700.

The operation of the rotary switch configured as described above will be described. First, when operating as a push switch, the opening 510 of the dial 500 is used.
Press the key top 700 exposed from the. Thus, the central portion of the snap plate 600 is brought into contact with the central pattern 122 by the protrusion 730.
Thereby, the C-shaped pattern 121 and the central pattern 12
2 is conducted. When the keytop 700 is opened, the snap plate 600 returns to its original state by its own elastic force, and at the same time, the conduction between the C-shaped pattern 121 and the central pattern 122 is cut off.

When operating as a rotary switch, the dial 500 is rotated. Then, the rotor 300 connected to the dial 500 rotates, and the brush 400 attached to the rotor 300 slides on the rotary switch pattern wiring 110. Thereby, the signal is changed. Here, the convex portion 331 of the elastic portion 330 of the rotor 300 constituting the detent mechanism.
However, by fitting into the concave portion 251 of the cover 200, an appropriate click feeling is produced for the rotation of the dial 500. The convex wall 210 of the cover 200 constituting the stopper mechanism and the dial-side stopper 550 of the dial 500
This restricts excessive rotation of the dial 500.

In the above-described embodiment, the stopper mechanism is constituted by the convex wall 210 of the cover 200 and the dial-side stopper 550 of the dial 500, but the present invention is not limited to this. For example, the cover 200
May be formed on the lower surface of the rotor 300 and the upper surface of the flange portion 320 of the rotor 300, respectively, and the two protrusions may constitute a stopper mechanism.

Although the push switch is composed of the push switch pattern wiring 120 formed on the substrate 100, the snap plate 600, and the key top 700, an ordinary thin surface mount switch may be used.
Further, the elastic portion 330 of the rotor 300 constituting the detent mechanism may be a leaf spring separate from the rotor 300.

[0023]

The rotary switch according to the present invention includes a substrate on which a pattern wiring is formed, a cover directly attached to the substrate, a rotor interposed between the cover and the substrate, and a rotary switch attached to the rotor. a brush for conducting the pattern wiring Te, a dial attached to the rotor, and a stopper mechanism for restricting the rotation of the dial is provided on the inner peripheral edge of the outer peripheral edge and the cover of the rotor
Detent that produces a click feeling in the rotation of the rotor
A mechanism and a push switch pattern formed on the substrate
Snap plate for conducting ground wiring and this snap
And a key top for pressing the plate.
Pattern wiring is a pattern in which electrical elements are connected in series.
The detent mechanism on the outer peripheral edge side of the rotor
An elastic part formed by removing the inside of the periphery
is there. Therefore, an electric element such as a chip resistor can be automatically soldered to the substrate by reflow soldering or the like,
Since the body of the conventional rotary switch becomes unnecessary and a stopper mechanism can be provided, the size and thickness of the conventional rotary switch can be reduced. Also,
The tent mechanism also requires new members while achieving this thinning.
It can be provided at relatively low cost without need.

[Brief description of the drawings]

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

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

FIG. 3 is a drawing of a cover, wherein FIG.
FIG. 1B is a partial sectional view, and FIG. 1C is a bottom view.

4A is a plan view of a rotor, and FIG.
FIG. 2B is a sectional view taken along the line AA of FIG. 1A, and FIG.
Is a bottom view.

5A and 5B are drawings of the key top, FIG. 5A is a plan view, FIG. 5B is a partial cross-sectional view, and FIG. 5C is a bottom view.

6 (A) is a plan view, FIG. 6 (B) is a sectional view taken along the line BB of FIG. 6 (A), and FIG. 6 (C) is a bottom view.

FIG. 7 is a schematic plan view of a substrate.

FIG. 8 is a schematic sectional view of a conventional rotary switch.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 substrate 200 cover 300 rotor 400 brush 500 dial 600 snap plate 700 keytop

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-46479 (JP, A) Japanese Utility Model Application No. 3-82535 (JP, U) Japanese Utility Model Application No. 3-77340 (JP, U) Japanese Utility Model Application No. 2- 133834 (JP, U) Japanese Utility Model Showa 61-86904 (JP, U) Japanese Utility Model Utility Model No. 2-110133 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) H01H 25/00 H01H 19 / 58

Claims (1)

(57) [Scope of request for utility model registration] 1. A substrate on which a pattern wiring is formed, a cover directly attached to the substrate, a rotor interposed between the cover and the substrate, and a brush attached to the rotor to conduct the pattern wiring. When a dial attached to the rotor, and a stopper mechanism for restricting the rotation of the dial, and the outer peripheral edge of the rotor cover
On the inner circumference of the
A detent mechanism to be output and a pusher formed on the substrate.
Snap play for conducting pattern wiring for switch
And the key top that presses this snap plate
And the pattern wiring includes an electric element connected in series.
Connected to the outer periphery of the rotor.
As a result, the inside of this outer edge is pulled out
A rotary switch, wherein the rotary switch is a formed elastic part .