JPH1012092A - Rotary switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary switch which has improved durability and is easily downsized and manufactured with little wasteful use of a material. SOLUTION: This switch comprises a switch plate 30, an elastic press plate 50, and a rotation body 70: and in the switch plate four switch contacts 33 and one land part 35 are formed; the press plate is made of an elastic body and has a base part to be installed on the land part 35 and arm parts 53 which are formed continuously from the base part and curved upward and have pressing parts 59 near the tip ends at a prescribed distance from the switch contacts 33; and the rotation body 70 is installed on the switch plate 30 in a freely turnable manner and has a contacting part which is formed in the lower face of the body to be brought into contact with pressing projected parts 57 of the arm parts 53 to push down the arm parts 53. The arm parts 53 are formed into approximately linear shape toward the tangential line touching the rotation direction of the rotation body 70. The contacting part of the rotation body 70 is brought into contact with a pressing projected part 57 and pushes down an arm part 53 by rotating the rotation body 70 and the pressing part 59 of the arm part 53 which is pushed down pushes down a switch contact 33.

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 rotary member such as a knob.

[0002]

2. Description of the Related Art Conventionally, in a rotary switch, a plurality of arms formed on a slider are respectively rotated by rotating a rotating body on which a slider made of a metal plate is fixed. The switch pattern is configured to be in sliding contact with a plurality of switch patterns provided on the switch, thereby turning on and off the switch, or conversely, by rotating a rotating body provided with a plurality of switch patterns, the respective switch pattern surfaces are separated. There has been a structure in which the slider is slidably contacted with each arm portion of the slider fixed to the member, thereby turning on and off the switch.

[0003]

However, the above-mentioned conventional rotary switch has the following problems. In any of the above rotary switches, since the arm of the slider slides on the switch pattern, the arm and the switch pattern are greatly worn, which hinders an improvement in durability.

The slider used in the conventional rotary switch has been formed in an arc shape, for example, as shown in FIG.

[0005] However, when the rotary switch is downsized, the radius of curvature of each arm section 200 becomes small, and the length of the arm section 200 becomes short, so that the elasticity becomes insufficient. In addition, it becomes difficult to press the plurality of arms 200 having close pitches into an arc shape. Sliders are manufactured by punching a large number of flat elastic metal plates at the same time with a press, but if the sliders are arc-shaped, the remaining part of the elastic metal plate after punching the sliders is left uncut. And material cannot be efficiently removed from the elastic metal plate.

The present invention has been made in view of the above points, and an object of the present invention is to provide a rotary switch which has improved durability, can be easily miniaturized, and has little waste of material.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a switch plate provided with switch contacts, a base made of an elastic body and mounted on the switch plate, and curving upward from the base. An elastic pressing plate having a pressing portion provided at a predetermined position of the lever and an arm portion located on a switch contact of the switch plate; and an elastic pressing plate rotatably disposed on the switch plate and provided on a lower surface thereof. A rotating body provided with a contact portion which comes into contact with the arm portion and presses down the arm portion, wherein the arm portion of the elastic pressing plate is directed in a tangential direction in contact with a rotating direction of the contact portion provided on the rotating body. When the rotating body is rotated, the rotating body rotates so that the abutting portion provided on the rotating body abuts against the arm of the elastic pressing plate and pushes down the arm. Press the switch contact on the plate It was configured to.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 3 is an exploded perspective view showing a rotary switch according to one embodiment of the present invention. As shown in FIG. 1, the rotary switch includes a case body 10 integrally formed with a switch plate 30 including five metal plates 31-1 to 31-5, an elastic pressing plate 50, and a rotating body. 70, an upper case 90, and a mounting plate 100. Hereinafter, each component will be described.

FIG. 4 shows the case body 1 shown in FIG.
0 is a sectional view taken along the line AA. FIG. 5 is a perspective view showing only the switch plate 30 integrally formed in the case main body 10.

[0010] As shown in FIG.
Four metal plates 3 bent in the same direction in the shape of a letter
1-1 to 31-4 and one metal plate 31-5 arranged next to the metal plate 31-4.

The four metal plates 31-1 to 31-31.
A switch contact 33 is provided in the vicinity of the tip of each of the reference numerals 4. The tip of the other metal plate 31-5 is a land 35, in which two through holes 37 are provided. Note that these five metal plates 3
The other ends of 1-1 to 31-5 constitute a terminal section 39.

Next, as shown in FIGS. 3 and 4, the case main body 10 is formed by molding a molding resin integrally with the switch plate 30, and has a substantially rectangular flat plate shape. A semicircular recess 11 for accommodating a main body 71 of the rotating body 70 described below is provided at the center thereof, and a switch plate mounting portion 13 for mounting the switch plate 30 is provided next to the concave portion.

At the center of the concave portion 11, there is provided a concave shaft support portion 15 for rotatably inserting a shaft support protrusion 75 of a rotating body 70 described below, and at the four corners of the upper surface of the case body 10, locking protrusions 17 are provided. It is protruding.

Small projections 19 are provided in two through holes 37 (see FIG. 5) provided in the land portions 35 of the switch plate mounting portion 13.

The five metal plates 31-1 to 31-5 constituting the switch plate 30 have upper surfaces exposed to the surface of the switch plate mounting portion 13.

A locking rod 25 located above the surface of the switch plate mounting portion 13 is provided above the tip of the metal plates 31-1 to 31-4 on the switch contact 33 side.

The four sides near the four corners of the case body 10 include:
A notch 21 for inserting a locking piece 101 of the mounting plate 100 described below is provided.

Next, as shown in FIG. 3, the elastic pressing plate 50
It is formed by pressing one elastic metal plate, and from a rectangular base 51 provided at one end thereof,
The four arm portions 53 are configured to project in parallel and linearly, that is, in a comb-tooth shape.

The four arms 53 have bases 51 on their surfaces.
A bent portion 55 is provided at a connection portion with the base 51 so as to be higher than the surface by a predetermined height.

Here, each of the four arm portions 53 is formed in the shape of a straight line having the same length, and a pressing projection 57 which is curved upward in a semicircular arc is provided substantially at the center thereof.
In the vicinity of the tip, a pressing portion 59 is provided which bends downward in a semicircular arc shape.

The base 51 has two through holes 61.

Next, FIG. 6 is a view showing the rotating body 70, FIG. 6 (a) is a bottom view, and FIG. 6 (b) is a side sectional view (FIG. 6 (a)).
FIG.

As shown in FIG. 3 and FIG.
Is formed by projecting a cylindrical knob portion 73 from the center of the upper surface of the disk-shaped main body portion 71, and is rotatably inserted into the shaft support portion 15 of the case main body 10 at the center of the lower surface of the main body portion 71. Are provided on the outer periphery thereof, and eight of them (one on each of the two inner concentric circles and the outer concentric circle) on four concentric circles having four different radii around the shaft supporting protrusion 75. 2 on top, 4 on outermost concentric circle
This is provided with a contact portion 77 which protrudes in an arc shape of the book.

The pitch between the four different concentric circles is the same as the pitch between the four arm portions 53.

Next, as shown in FIG. 3, the upper case 90 has a substantially flat plate shape, and has cylindrical projections 91 protruding from the center of the upper surface thereof, and locking recesses 93 provided at four corners of the upper surface. The main body 71 of the rotating body 70
And a circular concave portion 95 (see FIG. 1) for accommodating the same. At four corners on the lower surface of the upper case 90, locking holes (not shown) for positioning for inserting the locking projections 17 of the case body 10 are provided.

Next, as shown in FIG. 3, the mounting plate 100 is made of a substantially flat metal plate and has four locking pieces 101 projecting upward from the four corners. Reference numeral 103 denotes a fixing projection for fixing the rotary switch to another member.

To manufacture this rotary switch, first, as shown in FIG.
The two small projections 19 of the case main body 10 are inserted into the two through holes 61 of the elastic pressing plate 50 with the ends of the projections being passed under the locking rods 25, and the tips of the projections 19 are thermally caulked. As a result, the base portion 51 of the elastic pressing plate 50 is press-connected to the land portion 35 of the switch plate 30 to mechanically fix the two and electrically connect them at the same time.

At this time, the pressing portions 59 of the four arm portions 53 of the elastic pressing plate 50 are all placed on the switch contacts 33 of the metal plates 31-1 to 31-4 of the switch plate 30.
It is located via a predetermined gap.

FIG. 7 is a side sectional view of the case main body 10 to which the elastic pressing plate 50 is attached (a cross section of the same portion as FIG. 4 is shown). As shown in the figure, the distal end of each arm 53 of the elastic pressing plate 50 elastically contacts the lower surface of the locking bar 25 provided on the case body 10 and is assembled so as not to move upward from the locking bar 25. Have been.

Next, returning to FIG. 3, the case main body 10 is placed on the mounting plate 100, and then the main body 71 of the rotating body 70 is stored in the concave portion 11 of the case main body 10, and is placed thereon. Put the upper case 90 on. At this time, the knob 73 of the rotating body 70 passes through the cylindrical projection 91 of the upper case 90.

The four locking pieces 101 of the mounting plate 100
Is folded on the upper surface of the upper case 90 and locked in the locking recess 93, whereby the rotary switch is completed.

FIG. 1 is a schematic sectional side view of the rotary switch assembled as described above. FIG. 2 shows the contact portion 77 of the rotating body 70 in the assembled rotary switch.
FIG. 5 is a diagram showing a positional relationship between the elastic pressing plate and the elastic pressing plate.

In FIG. 2, the contact portion 77 located on the innermost concentric circle provided on the rotating body 70 and the contact portion 77 located on the next inner concentric circle are formed by the elastic pressing plate 50.
Abutting against the pressing projections 57 provided on the upper two arm portions 53 of the upper arm portion 53, whereby these two arm portions 53 are pushed downward as shown in FIG. The two metal plates 31-3 and 31-4 of the switch plate 30 arranged at a position facing the pressing portion 59 (FIG.
(See FIG. 3), thereby turning on between the two metal plates 31-3 and 31-4 and the common metal plate 31-5.

When the rotating body 70 shown in FIG. 2 is rotated clockwise, for example, the fourth arm 5 from the top is further rotated.
3 is pushed down, the metal plate 31-1 is turned on, and then the third arm 53 from the top is pushed down, and the metal plate 31-1 is turned on.
2 turns on, then the fourth arm 53 from the top returns to the original position, the metal plate 31-1 turns off, and the second arm 53 from the top returns to the original position. Metal plate 31-3
Turns off. In other words, a desired 4-bit switch pattern can be obtained by adjusting the position and length of the contact portion 77.

In the above-described embodiment, as shown in FIG. 7, the tip of each arm 53 of the elastic pressing plate 50 is brought into contact with the locking rod 25 of the case body 10, and
Is configured not to move upward from the locking rod 25 because the tip of each arm 53 is brought into contact with the locking rod 25 so that the separation distance between the switch contact 33 and the pressing part 59 is constant. This is to ensure accurate on / off operation.

If the tip of the arm 53 has moved significantly above the locking rod 25, the rotating body 70
When the rotary member is rotated, the contact portion 77 of the rotating body 70 may come into contact with the side of the raised arm portion 53, and the arm portion 53 may be destroyed. There is also.

As is apparent from the above embodiment, in the present invention, the pressing portion 59 of the elastic pressing plate 50 and the switch contact 33 of the switch plate 30 do not make sliding contact with each other, but simply repeat elastic contact and separation between them. Just turn it on and off. Therefore, the wear of both the pressing portion 59 and the switch contact 33 is small, and the durability is improved.

Although one embodiment of the present invention has been described in detail above, the present invention is not limited to this. For example, the following modifications are possible. In the above embodiment, the five metal plates 31-1 to 31-5 constituting the switch plate 30 are cast into the case main body 10 so that their surfaces are exposed.
-5 may not be cast, but may be simply fixed while placed on the case body 10.

In the above embodiment, the switch plate 30
Although five metal plates 31-1 to 31-5 are used as the example, a circuit pattern 121 is formed on a flexible substrate 122 instead of a metal plate as in a switch plate 120 shown in FIG. 8, for example.
-1 to 121-5, and each circuit pattern 1
Switch contacts 123 and land portions 125 may be provided in 21-1 to 121-5. Also, the flexible substrate 123
Instead, a hard substrate may be used.

In place of the switch plate 120 shown in FIG. 8, for example, as shown in FIG.
31 may be opposed to each other via the spacer 133, and the switch contacts 135 may be configured by the opposed switch patterns 135a and 135b. That is, it may be a membrane type switch plate. More specifically, upper and lower switch patterns 135a and 135b are provided so as to correspond to the respective switch contacts 123 shown in FIG. 8, and the upper switch pattern 135a and the circuit pattern 121-5 shown in FIG. A connection is made at a portion (not shown), and when both of the switch patterns 135a and 135b are turned on, any one of the circuit patterns 121-1 to 121-4 connected to the turned on switch pattern 135b is electrically connected to the circuit pattern 121-5. To do. With this configuration, there is no possibility that foreign matter such as dust or grease adheres to the portion of the switch contact 135 and the switch cannot be normally turned on and off. Further, a so-called pressure-sensitive switch element may be used as the switch contact.

[0041]

As described in detail above, the present invention has the following excellent effects. Since the contact between the elastic pressure plate and the switch contact of the switch plate does not make sliding contact with each other, but merely turns on and off repeatedly by elastic contact and separation between them, the wear between them is small and the durability is improved.

Since the arm portion of the elastic pressing plate is formed in a substantially straight line so as to extend in a tangential direction in contact with the rotation direction of the contact portion provided on the rotating body, even if the rotary switch is downsized, The length of the portion can be made sufficiently long to make the resilience sufficient, and the manufacture thereof becomes easier as compared with the case where each arm portion of the elastic pressing plate is formed in an arc shape. Further, since the entire shape of the elastic pressing plate can be formed in a substantially rectangular shape, the elastic metal plate after punching out a flat elastic metal plate by a press has a small remaining portion, and efficient material removal can be performed. No waste occurs.

[Brief description of the drawings]

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

FIG. 2 is a diagram showing a positional relationship between a contact portion 77 of a rotating body 70 and an elastic pressing plate 50.

FIG. 3 is an exploded perspective view showing a rotary switch according to one embodiment of the present invention.

FIG. 4 is a sectional view of the case main body 10 taken along the line AA in FIG.

FIG. 5 is a perspective view showing only a switch plate 30;

6A and 6B are diagrams showing a rotating body 70, FIG. 6A is a bottom view, and FIG. 6B is a side sectional view (BB sectional view of FIG. 6A).

FIG. 7 is a side sectional view of the case body 10 to which the elastic pressing plate 50 is attached.

FIG. 8 is a perspective view showing a switch plate 120 according to another embodiment.

FIG. 9 is a side sectional view showing a main part of a switch contact 135 according to another embodiment.

FIG. 10 is a view showing a slider used for a conventional rotary switch.

[Explanation of symbols]

 Reference Signs List 30 switch plate 33 switch contact 50 elastic pressing plate 51 base 53 arm unit 59 pressing unit 70 rotating body 77 contacting unit

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[Procedure amendment]

[Submission date] July 1, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a contact having a switch contact and a common contact.
A member, a base mounted on the common contact and a front
Resilient having a contact portion located above the switch contact
Plate and a lower surface thereof rotatably disposed above the elastic plate
A rotating body provided with a push-down portion for pushing down the elastic plate;
Provided on the rotating body by rotating the rotating body
The press-down unit presses down the elastic plate,
The contact portion is configured to contact the switch contact.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 3 is an exploded perspective view showing a rotary switch according to one embodiment of the present invention. As shown in the figure, the rotary switch comprises a case body (contact member) 10 integrally formed with five metal plates 31-1 to 31-5 inside a mold resin , an elastic plate 50, and a rotating body. 7
0, an upper case 90, and a mounting plate 100. Hereinafter, each component will be described.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

FIG. 4 shows the case body 1 shown in FIG.
0 is a sectional view taken along the line AA. FIG. 5 is a perspective view showing only the metal plates 31-1 to 31-5 integrally formed in the case main body 10.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

The metal plates 31-1 to 31-5 shown in FIG .
Of these, the four metal plates 31-1 to 31-4 are substantially L-shaped.
Folded in the direction, and another metal plate 31-5
Is arranged next to the metal plate 31-4.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

The four metal plates 31-1 to 31-31.
A switch contact 33 is provided in the vicinity of the tip of each of the reference numerals 4. The tip of the other one of the metal plate 31-5 Como
The common contact 35 is provided with two through holes 37. The other ends of the five metal plates 31-1 to 31-5 constitute terminal portions 39.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction contents]

[0012] Then the case body 10 as a contact member, as shown in FIGS. 3 and 4, the mold resin the metal plate 31
-1 to 31-5 are formed integrally with each other, and the shape thereof is a substantially rectangular flat plate, and a semicircular recess 11 for accommodating a main body portion 71 of the rotating body 70 described below in the center thereof. Is provided next to the metal plates 31-1 to 31-5.
Is provided with a metal plate mounting portion 13 for mounting the same.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction contents]

The common contact 3 of the metal plate mounting portion 13
Small projections 19 are protruded from two through holes 37 (see FIG. 5) provided in 5.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

The five metal plates 31-1 to 31-31
Reference numeral 5 denotes a state in which the upper surface is exposed on the surface of the metal plate mounting portion 13.

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

The metal plate mounting portions 13 are provided above the ends of the metal plates 31-1 to 31-4 on the switch contact 33 side.
The locking bar 25 located above the surface is passed.

[Procedure amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction contents]

Next, as shown in FIG. 3, the elastic plate 50 is formed by pressing a single elastic metal plate, and from a rectangular base 51 provided at one end thereof to four arm portions. 53 are projected in parallel and linearly, that is, in a comb-tooth shape.

[Procedure amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction contents]

Here, each of the four arm portions 53 is formed in the shape of a straight line having the same length, and a pressing projection 57 which is curved upward in a semicircular arc is provided substantially at the center thereof.
The person to be curved in a semicircular arc shape in a downward direction in the vicinity of the tip
A contact portion 59 is provided.

[Procedure amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0023

[Correction method] Change

[Correction contents]

As shown in FIG. 3 and FIG.
Is formed by projecting a cylindrical knob portion 73 from the center of the upper surface of the disk-shaped main body portion 71, and is rotatably inserted into the shaft support portion 15 of the case main body 10 at the center of the lower surface of the main body portion 71. Are provided on the outer periphery thereof, and eight of them (one on each of the two inner concentric circles and the outer concentric circle) on four concentric circles having four different radii around the shaft supporting protrusion 75. 2 on top, 4 on outermost concentric circle
) Is provided with a press-down portion 77 that protrudes in an arc shape.

[Procedure amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0027

[Correction method] Change

[Correction contents]

In order to manufacture this rotary switch, as shown in FIG. 3, first, the tip of the arm portion 53 of the elastic plate 50 is passed under the locking bar 25,
0 of the two small projections 19 with the two through holes 6 of the elastic plate 50.
1 and the tip of the projection 19 is caulked by heat to connect the base 51 of the elastic plate 50 to the common contact 35 of the metal plate 31-5 by press-fitting. Connecting.

[Procedure amendment 15]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Change

[Correction contents]

At this time, the four arm portions 5 of the elastic plate 50
3, the respective contact portions 59 are all the metal plates 31-1 to 31.
-4 is located above the switch contact 33 with a predetermined gap.

[Procedure amendment 16]

[Document name to be amended] Statement

[Correction target item name] 0029

[Correction method] Change

[Correction contents]

FIG. 7 is a side sectional view of the case main body 10 to which the elastic plate 50 is attached (a cross section of the same portion as FIG. 4 is shown). As shown in the figure, the tip of each arm 53 of the elastic plate 50 is resiliently contacted with the lower surface of the locking bar 25 provided on the case body 10 and is assembled so as not to move upward from the locking bar 25. ing.

[Procedure amendment 17]

[Document name to be amended] Statement

[Correction target item name] 0032

[Correction method] Change

[Correction contents]

FIG. 1 is a schematic sectional side view of the rotary switch assembled as described above. FIG. 2 is a diagram showing a positional relationship between the pressing portion 77 of the rotating body 70 and the elastic plate 50 in the assembled rotary switch.

[Procedure amendment 18]

[Document name to be amended] Statement

[Correction target item name] 0033

[Correction method] Change

[Correction contents]

In FIG. 2, the lowering portion 77 provided on the innermost concentric circle provided on the rotating body 70 and the lowering portion 77 positioned on the innermost concentric circle next to the rotating member 70 are formed by two upper portions of the elastic plate 50. Abutting against a pressing projection 57 provided on the arm portion 53 of the second arm portion 53.
It is depressed downward, as shown in FIG. 1, two metal plates, each of the abutting portion 59 is disposed at a position facing the contact portion 59 31-3 and 31-4 (see FIG. 3) A metal contact 31-5 which is in common with the two metal contacts 31-3, 31-4.
You are on.

[Procedure amendment 19]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction contents]

When the rotating body 70 shown in FIG. 2 is rotated clockwise, for example, the fourth arm 5 from the top is further rotated.
3 is pushed down, the metal plate 31-1 is turned on, and then the third arm 53 from the top is pushed down, and the metal plate 31-1 is turned on.
2 turns on, then the fourth arm 53 from the top returns to the original position, the metal plate 31-1 turns off, and the second arm 53 from the top returns to the original position. Metal plate 31-3
Turns off. In other words, the position where the press-down portion 77 is provided
By adjusting the length, a desired 4-bit switch pattern can be obtained.

[Procedure amendment 20]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction contents]

In the above embodiment, as shown in FIG. 7, the tip of each arm 53 of the elastic plate 50 is brought into contact with the locking bar 25 of the case body 10 so that the arm 53 is The upper end of each arm 53 is brought into contact with the locking rod 25 to make the distance between the switch contact 33 and the contact part 59 constant, thereby enabling accurate on / off operation. This is to ensure.

[Procedure amendment 21]

[Document name to be amended] Statement

[Correction target item name] 0036

[Correction method] Change

[Correction contents]

If the tip of the arm 53 has moved significantly above the locking rod 25, the rotating body 70
When the rotary member 70 is rotated, the press-down portion 77 of the rotating body 70 may come into contact with the side of the raised arm portion 53, and the arm portion 53 may be destroyed. is there.

[Procedure amendment 22]

[Document name to be amended] Statement

[Correction target item name] 0037

[Correction method] Change

[Correction contents]

As is apparent from the above embodiment, in the present invention, the contact portion 59 of the elastic plate 50 and the switch contact 33 do not make sliding contact with each other, but are simply turned on and off by repeating elastic contact and separation between them. It is. Therefore, the abrasion of both the contact portion 59 and the switch contact 33 is small, and the durability is improved.

[Procedure amendment 23]

[Document name to be amended] Statement

[Correction target item name] 0038

[Correction method] Change

[Correction contents]

Although one embodiment of the present invention has been described in detail above, the present invention is not limited to this. For example, the following modifications are possible. In the above embodiment, the five metal plates 31-1 to 31-5 are cast into the case main body 10 so that the surfaces thereof are exposed. It may be simply fixed while placed on the main body 10.

[Procedure amendment 24]

[Document name to be amended] Statement

[Correction target item name] 0039

[Correction method] Change

[Correction contents]

In the above embodiment, five metal plates 3
Although 1-1 to 31-5 were used, for example, as shown in FIG. 8, circuit patterns 121-1 to 121-5 were formed on a flexible substrate 122 instead of a metal plate, and each circuit pattern 121-1 was formed. Switch contact 1 on ~ 121-5
23 and a common contact 125 may be provided. It may also be used a hard substrate instead of the flexible substrate 12 2.

[Procedure amendment 25]

[Document name to be amended] Statement

[Correction target item name] 0041

[Correction method] Change

[Correction contents]

[0041]

As described in detail above, the present invention has the following excellent effects. The contact between the contact portion of the elastic plate and the switch contact does not come into sliding contact with each other, but merely repeats elastic contact and separation between the two to turn on and off. Therefore, both abrasion therebetween is small, and the durability is improved.

[Procedure amendment 26]

[Document name to be amended] Statement

[Correction target item name] 0042

[Correction method] Change

[Correction contents]

The arm portion of the elastic plate is extended substantially linearly.
Therefore, even if this rotary switch is miniaturized, each arm can be made long enough to have sufficient resilience.
The manufacturing is easier than in the case where each arm of the elastic plate is formed in an arc shape. Since the elastic plate can form the entire shape in a substantially rectangular shape, the remaining portion is small to the elastic plate after punching a plate-shaped elastic plate by the press, it is efficient material removal, waste materials Does not occur.

[Procedure amendment 27]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

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

FIG. 2 is a diagram showing a positional relationship between a pressing portion 77 of a rotating body 70 and an elastic plate 50.

FIG. 3 is an exploded perspective view showing a rotary switch according to one embodiment of the present invention.

FIG. 4 is a sectional view of the case main body 10 taken along the line AA in FIG.

FIG. 5 is a perspective view showing only metal plates 31-1 to 31-5 .

6A and 6B are diagrams showing a rotating body 70, FIG. 6A is a bottom view, and FIG. 6B is a side sectional view (BB sectional view of FIG. 6A).

FIG. 7 is a side sectional view of the case body 10 to which the elastic plate 50 is attached.

FIG. 8 illustrates a switch contact 123 according to another embodiment;
FIG. 4 is a perspective view showing a mon contact 125 .

FIG. 9 is a side sectional view showing a main part of a switch contact 135 according to another embodiment.

FIG. 10 is a view showing a slider used for a conventional rotary switch.

[Description of Signs] 10 Case body (contact member) 33 Switch contact 35 Common contact 50 Elastic plate 51 Base 53 Arm part 59 Contact part 70 Rotating body 77 Push-down part

[Procedure amendment 28]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

FIG. 2

[Procedure amendment 29]

[Document name to be amended] Drawing

[Correction target item name] Figure 3

[Correction method] Change

[Correction contents]

FIG. 3

[Procedure amendment 30]

[Document name to be amended] Drawing

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

FIG. 5

[Procedure amendment 31]

[Document name to be amended] Drawing

[Correction target item name] Fig. 7

[Correction method] Change

[Correction contents]

FIG. 7

[Procedure amendment 32]

[Document name to be amended] Drawing

[Correction target item name] Fig. 8

[Correction method] Change

[Correction contents]

FIG. 8

Claims (1)

[Claims] A switch plate provided with a switch contact; a base made of an elastic body and mounted on the switch plate; and a pressing portion bent upward from the base and provided at a predetermined position, the switch of the switch plate. An elastic pressing plate having an arm portion located on a contact; and a contact portion rotatably disposed on the switch plate and having a lower surface thereof in contact with an arm portion of the elastic pressing plate to press down the arm portion. A rotating body provided, wherein the arm portion of the elastic pressing plate is formed in a substantially straight line in a tangential direction in contact with the rotating direction of the contact portion provided on the rotating body, and the rotating body is rotated. A rotary switch, wherein a contact portion provided on the rotating body contacts an arm portion of an elastic pressing plate to press down the arm portion, and the pressing portion of the arm portion presses a switch contact of the switch plate. .