JP2946403B2 - 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 switch for turning on and off a switch by operating a moving body such as a knob.

[0002]

2. Description of the Related Art Conventionally, in a rotary switch, a rotating body provided with a desired switch pattern is rotated to bring the switch pattern surface into sliding contact with an elastic metal plate fixed to another member. By rotating the rotating body on which the elastic metal plate is fixed, the elastic metal plate is brought into sliding contact with a switch pattern provided on another member, whereby the switch is turned on and off. There is a structure that performs.

The switch pattern has a structure in which a switch pattern is provided on the surface of a hard substrate or a flexible substrate by printing or etching.
There has been a structure formed by casting a metal plate having a switch pattern shape in a resin plate so that both surfaces are flush with each other.

[0004]

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

In addition, since the elastic metal plate is always in elastic contact with the switch pattern forming surface, so-called sag occurs in the elastic contact force of the elastic metal plate, and the elastic contact force may be weakened with time.

[0006] Among the rotary switches, there is a rotary switch having a structure in which a metal terminal plate protrudes directly from the outer periphery of the rotary switch.

When a switch pattern formed by printing or the like on the surface of a substrate is used as a switch pattern for this type of rotary switch, a metal terminal plate must be separately connected to the substrate. Not only increases, but also the assembly work becomes complicated.

On the other hand, when a switch pattern formed by casting a metal plate in a resin plate is used as a switch pattern for this type of rotary switch, the metal terminal is protruded to the outside as it is. Since it is a plate, the number of parts does not increase.

However, the operation of casting a metal plate into a resin plate is quite complicated. Further, it is difficult to make the surface of the resin plate and the surface of the metal plate completely the same, and a step is likely to occur at the boundary between the two. If any level difference occurs, there is a possibility that the elastic metal plate that slides on the level may cause chattering.

In order to cast a metal plate into a resin plate,
The metal plate must be clamped between upper and lower molds, but for the clamping, a metal plate with a large area for clamping the mold connected to the switch pattern-shaped metal plate must be attached around the metal plate. (This part is later cut and removed) and wastes material.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and its object is to improve the durability, the elastic contact force of the elastic metal plate does not weaken over time, and the metal terminal plate directly projects from the outer periphery. An object of the present invention is to provide a switch which has a small number of parts, is easy to manufacture, has no problems such as chattering, and has little waste of material.

[0012]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a metal terminal plate having a contact portion at a predetermined position;
A metal terminal plate having a land portion at a predetermined position, a contact plate having a base made of an elastic metal plate and directly fixed to the land portion of the metal terminal plate, and an arm portion directly protruding from the base portion; comprising a rotary body having a depressed portion depressing it to the arm portion in contact with the rotatably arranged the contact plate on its lower surface on the plate, provided with the contact portion
The metal terminal plate with the land and the metal terminal plate with the land
Fixed on a table, and the land and the base of the contact plate.
The land part between the base and the base of the contact plate.
Holding the base of the contact plate directly against the land
By fixing with the arm part
Is positioned a predetermined distance above the contact section, and
By rotating the rotating body disposed above the contact plate,
Depressing this portion depressed provided on the rolling body is brought into contact with the arm portion of the contact plate, and the arm portion in abutment allowed to structure the contact portion of the metal terminal plate, further wherein the rotary member is the same one
The inner first rotating body that rotates about the rotation center axis and the outer rotating body
The second rotating body is constituted by two rotating bodies, and the first
Gold provided with the contact portion under each of the second rotating bodies
Metal terminal plate provided with a metal terminal plate and the land portion and the contact
Plates, and a concave is formed on the upper surface of the first rotating body.
A convex click surface is provided, while an upper portion of the first rotating body is provided.
Attaches the first cover to cover the first rotating body.
Contact the first cover with the unevenness of the click surface.
A click portion, and the base is provided with the first rotating body.
Providing an inner wall for partitioning between the second rotating bodies, and above the inner wall;
The first cover is fixed to the surface, and the second
A second cover is provided on the portion to cover the second rotating body.
On the other hand, place a lower cover on the lower surface of the base,
The lower cover and the second cover are fixed by fixing between the lower cover and the second cover.
And the base and the second rotating body are integrated .

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an exploded perspective view showing a rotary switch according to one embodiment of the present invention. As shown in the figure, this rotary switch has eight metal terminal plates 31 and two contact plates 51 and 53 fixed on a base 10,
The first rotating body 60 and the second rotating body 80 are mounted thereon, and the compression coil spring 100 is housed in the arc hole 23 provided in the base 10 and the arc hole 85 provided in the second rotating body 80. And
The first rotator 60 and the second rotator 80 are covered with a first cover 110 and a second cover 120, respectively, and a lower cover 130 and a second cover 120 arranged below the base 10 are respectively provided. Is fixed. Hereinafter, each component will be described.

FIG. 2 is an enlarged perspective view showing the base 10. As shown in the figure, the base 10 is formed by molding a synthetic resin into a substantially square shape. A ring-shaped storage recess 11 for storing the second rotating body 80 in the base 10;
A circular storage recess 13 for storing the first rotating body 60 is provided.

A support shaft 15 is provided upright at the center of the storage recess 13, and the following first inner walls 17 partitioning between the storage recess 13 and the storage recess 11 are provided with the following first members. A locking portion 19 provided with a claw for locking the locking projection 117 provided on the cover 110 is provided. In addition, inner wall 1
On the upper surface of 7, three caulking projections 21 are provided.

An arc hole 23 is formed in the storage recess 11 so as to penetrate the support shaft 15 so as to draw an arc at an angle of about 150 °.

A plurality of small projections 25 are provided at predetermined positions on the surface inside the storage recess 13 and the surface inside the storage recess 11, respectively.
Is protruding.

At four corners of the base 10, through holes 29 for mounting the rotary switch to other members are provided, and four claw locking recesses 27 are provided on the outer side thereof. ing.

FIG. 3 is an enlarged rear view of the first rotating body 60. As shown in FIGS. 1 and 3, the first rotating body 60
A rotating shaft (middle shaft) 61 is provided at the center of a substantially disc-shaped rotating body 63.
It is constituted by standing up. A circular through hole 62 is provided in the rotation shaft 61.

On the upper surface of the rotator body 63, an uneven click surface 66 is formed by providing a number of recesses 67 radially about the rotation shaft 61.

On the back surface of the rotator body 63, ten concentric circles are pressed down at equal intervals, respectively.
Protrusions 68 and 69 serving as portions are provided. The adjacent projections 68 and 69 are arranged so as to be shifted from each other by the same predetermined angle θ when viewed from the center of the rotating body main body 63.

FIG. 4 is an enlarged rear view of the second rotating body 80. As shown in FIGS. 1 and 4, the second rotating body 80
A rotary body 81 having a substantially disk shape is provided, and a circular hole 82 for accommodating the first rotary body 60 is provided at the center thereof. ) 83 is projected.

An arc hole 8 penetrating in an arc shape having an angle of about 150 ° is formed outside the rotation shaft 83 of the rotator body 81.
5 are provided. Support projections 8 are provided on both sides of the arc hole 85.
6 are provided. The length of the arc hole 85 in the longitudinal direction coincides with the length of the arc hole 23 provided on the base 10 in the longitudinal direction.

On the back surface of the rotator main body 81, there are nine push-down members each having a predetermined length on four concentric circles.
An arcuate projection 87 serving as a projection is provided.

Next, as shown in FIG. 1, the compression coil spring 100 is formed by winding a spring material many times.

Next, as shown in FIG. 1, the first cover 110 is formed by stamping a metal plate into a circular hole 1 into which the rotation shaft 61 of the first rotating body 60 is inserted.
11, a click part 113 having an arcuate shape and having a projection 112 projecting downward at the center thereof, and three through holes 115 inserted into the three caulking projections 21 provided on the base 10. 3 which is bent downward from the outer periphery and is locked at three locking portions 19 provided on the base 10.
And two locking projections 117.

Next, as shown in FIG. 1, the second cover 120 is formed by stamping a metal plate into a circular hole 1 into which the rotary shaft 83 of the second rotary body 80 is inserted.
21 and a locking piece 123 protruding from the outer periphery and bent downward. The locking piece 123 is provided with a through hole 125.

Next, as shown in FIG.
The metal plate is punched and provided with four locking claws 131 (three shown in the figure) on the outer periphery thereof.

FIG. 5 is an enlarged plan view showing eight metal terminal plates 31. As shown in FIG.
1 is formed by punching one metal plate. Each of the eight metal terminal plates 31 is provided with an externally protruding terminal portion 33 at an end thereof in parallel. Each terminal 33 is connected to a holding plate 38. Each metal terminal plate 31 is provided with a large number of fixing holes 39.

At the ends of the four upper metal terminal plates 31 shown in the drawing, there are provided contact portions 35 for contacting the tips of the arm portions 57 of the contact plate 51 described below. At the end of the fifth metal terminal plate 31 from the top, a land portion 37 having a large area to which a base 55 of a contact plate 51 described below is attached is provided.

On the other hand, at the ends of the sixth and seventh metal terminal plates 31 from the top, a contact portion 41 for contacting the tip of an arm portion 61 of a contact plate 53 described below is provided. At the end of the lowermost metal terminal plate 31, there is provided a land portion 43 having a large area to which a base 59 of a contact plate 53 described below is attached.

FIG. 6 is an enlarged plan view showing two contact plates 51 and 53. Both contact plates 51 and 53 are formed by stamping an elastic metal plate. The contact plate 51 has four arms 57 projecting from the base 55, and the contact plate 53 also has two arms 61 projecting from the base 59. As shown in FIG. 1, each of the arms 57 and 61 is entirely bent in a U-shape. The base 55 has two fixing holes 56, and the base 59 has two fixing holes 5.
8 are provided.

In order to assemble the rotary switch, as shown in FIG. 1, first, eight metal terminal plates 31 shown in FIG. At this time, each small projection 25 provided on the base 10 is inserted into each fixing hole 39 provided on each metal terminal plate 31.

Next, the two land portions 3 of the metal terminal plate 31
The bases 55 and 59 of the two contact plates 51 and 53 are placed on the bases 7 and 43, respectively. At this time, the fixing holes 56 and 58 provided in the base portions 55 and 59 respectively correspond to the land portions 37 and 43, respectively.
The small projection 25 which penetrates the fixing hole 39 provided in is inserted. FIG. 9 shows a state where the contact plates 51 and 53 are mounted on the metal terminal plate 31.

When the tips of all the small projections 25 are caulked, the metal terminal plates 31 and the contact plates 51, 53 are fixed on the base 11, and at the same time, the land portions 37, 43 of the metal terminal plate 31 The bases 55, 59 of the contact plates 51, 53 are electrically connected respectively. At this time, the tips of the four arm portions 57 provided on the contact plate 51 are located on the four contact portions 35 provided on the metal terminal plate 31 at a predetermined distance. Also, two arm portions 61 provided on the contact plate 53
Are located at a predetermined distance above two contact portions 41 provided on the metal terminal plate 31 (see FIG. 9).

Then, the holding plate 38 shown in FIG. 5 is cut along the dashed line to separate each metal terminal plate 31.

Next, the base 10 is placed on the lower cover 130. Next, the first rotating body 6 is placed in the storage recess 13 of the base 10.
0 is stored, and the second rotating body 80 is stored in the storage recess 11. At this time, the base 1 is inserted into the through hole 62 of the first rotating body 60.
The support shaft 15 is inserted and supported rotatably, and at the same time, the inner wall 17 of the base 10 is inserted into the hole 82 of the second rotating body 80 and supported rotatably.

Next, the first cover 110 is attached so as to cover the first rotating body 60, and is pushed into close contact with the upper surface of the inner wall 17 of the base 10.
The locking projection 117 is locked at the second position. At the same time, caulking protrusion 2
1 is inserted into the through hole 115. And caulking protrusion 21
Heat the tip of

Next, the position of the circular hole 85 of the second rotating body 80 and the circular hole 23 of the base 10 are aligned, and a compression coil spring 100 is inserted into the hole. And is supported by being inserted into support projections 86 provided on the rotating body 80. At this time, both ends of the compression coil spring 100 are in elastic contact with both end surfaces of both the arc holes 23 and 85.

Then, the second cover 120 is placed on the second rotating body 80 and pressed against the upper surface of the base 10.
At this time, the four locking pieces 123 of the second cover 120 are inserted into the claw locking recesses 27 of the base 10.

When the locking claws 131 of the lower cover 130 are bent and engaged in the through holes 125 of the second cover 120, the rotary switch is completed.

Next, the operation of the rotary switch will be described. Here, FIG. 7 is a schematic view showing the positional relationship between the contact plates 51 and 53 and the projections 68 and 69 of the first rotating body 60 and the arc-shaped projection 87 of the second rotating body 80 from above. FIG. 8 shows the contact plate 53 and the projections 68 and 6 of the first rotating body 60.
It is the schematic which shows the positional relationship with 9 from the side.

That is, first, when the rotation shaft 61 of the first rotating body 60 shown in FIG. 1 is rotated, the projections 68 and 69 provided on the back surface of the rotating body 60 are simultaneously rotated.
As shown in FIGS. 7 and 8, reference numeral 9 contacts the bent portions of the two arm portions 61 of the contact plate 53 fixed on the base 10 respectively.

The arm portion 61 pressed by the projections 68 and 69 is entirely tilted downward, and its tip abuts on the contact portion 41 of the metal terminal plate 31, and the metal terminal plate 31 provided with the contact portion 41 is provided. Terminal plate 31 provided with land portions 43
The on-off signal is obtained.

However, since the projections 68 and 69 are shifted by a predetermined angle θ, the positions where the projections 68 and 69 press the arm 61, that is, the on / off timings are shifted. As a result, the desired switch pattern (2
Bit).

When the first rotating body 60 is rotated, FIG.
The projection 11 of the first cover 110 is placed on the click surface 66 shown in FIG.
2 are engaged, and a click feeling is generated in the first rotating body 60.

Next, when the second rotating body 80 is rotated, the concentric arc-shaped projections 87 provided on the back surface of the compression coil spring 100 are simultaneously rotated while the compression coil spring 100 is being compressed, and as shown in FIG. The protrusions 87 respectively contact the bent portions of the four arm portions 57 of the contact plate 51 fixed on the base 10.

Arm 5 pressed by each projection 87
Reference numeral 7 denotes a metal terminal plate 31 having the contact portion 35 (see FIG. 5) of the metal terminal plate 31 having its tip end abutting downward as in the case of the arm portion 61 and having the contact portion 35 provided thereon. The space between the metal terminal plates 31 provided with the land portions 37 is turned on.

However, since the positions at which the respective protrusions 87 are provided are shifted from each other, the on / off signal thereof is transmitted to the second rotating body 80.
Depends on the rotation angle of As a result, a desired switch pattern (4 bits) is obtained from the second rotating body 80.

When the hand is released from the second rotating body 80, the second rotating body 80 automatically returns to the original position by the elastic force of the compression coil spring 100 shown in FIG.

As is apparent from the above embodiment, in the present invention, the contact plates 51, 53 and the contact portions 35, 41 of the metal terminal plate 31 do not make sliding contact with each other. It simply turns on and off repeatedly. Therefore, the contact plates 51 and 53 and the contact portions 35 and 41 are all less worn, and their durability is improved.

The arm portions 57, 6 of the contact plates 51, 53
Since 1 is not always pressed and is normally in a no-load state, the durability of the arms 57 and 61 is improved.

Although the above embodiment has described the rotary switch, the present invention may be applied to other switches such as a slide switch.

[0054]

As described in detail above, the present invention has the following excellent effects. There is no sliding contact between the contact portions of the contact plate and the metal terminal plate, and the contact portion is merely turned on and off by repeating elastic contact and separation, thereby improving the durability.

Since the pressing portion (projection) of the moving body (first and second rotating bodies) does not always contact the arm portion of the contact plate, the durability of the arm portion is improved.

In a switch having a structure in which a metal terminal plate is directly protruded to the outside, a contact portion of the switch is provided on the metal terminal plate itself, so that a substrate on which a switch pattern is separately printed becomes unnecessary, and the number of parts is reduced accordingly. Manufacturing is also easier. Also, as compared with the case where a resin plate in which a metal plate having a switch pattern shape is cast is used, it is not necessary to cast a metal terminal plate, so that its manufacture is facilitated.

Since the slider does not have a structure in which the slider slides on the switch pattern, problems such as chattering at the end of the switch pattern do not occur.

Since the metal terminal plate is not cast, it is not necessary to attach a large-sized metal piece for clamping the die around the metal terminal plate for forming the switch pattern, thereby eliminating waste of material.

[Brief description of the drawings]

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

FIG. 2 is an enlarged perspective view showing a base 10;

FIG. 3 is an enlarged back view of the first rotating body 60;

FIG. 4 is an enlarged back view of the second rotating body 80.

FIG. 5 is an enlarged plan view showing a metal terminal plate 31.

FIG. 6 is an enlarged plan view showing contact plates 51 and 53.

FIG. 7 is a diagram showing a positional relationship among contact plates 51, 53, protrusions 68, 69, and an arc-shaped protrusion 87.

FIG. 8 is a diagram showing a positional relationship between a contact plate 53 and protrusions 68 and 69.

FIG. 9 is a diagram showing a positional relationship between a metal terminal plate 31 and contact plates 51 and 53.

[Explanation of symbols]

 31 Metal terminal plate 35, 41 Contact part 37, 43 Land part 51, 53 Contact plate 55, 59 Base part 57, 61 Arm part 60 First rotating body (moving body) 68, 69 Projection 80 Second rotating body (moving) Body) 87 arc-shaped protrusion

Claims (1)

(57) [Claims] 1. A metal terminal plate having a contact portion at a predetermined position, a metal terminal plate having a land portion at a predetermined position, and a base made of an elastic metal plate and directly fixed to the land portion of the metal terminal plate. a contact plate having an arm portion projecting directly from the base portion, the rotary body provided with the depressing portion depressing it to the arm portion abuts against the rotation is rotatably disposed the contact plate on its lower surface on a metal terminal plate And a metal terminal plate provided with the contact portion and a metal provided with a land portion.
All terminal boards are fixed on the base, and
The contact plate is fixed to the base by the base and the base of the contact plate.
The base of the contact plate directly on the land
This is done by fixing it in abutting condition.
At this time, the arm part is separated from the contact part by a predetermined distance.
Allowed position Te, said by rotating the rotating body arranged above the contact plate
A pressing portion provided on the rotating body contacts the arm portion of the contact plate and presses it down, and the arm portion contacts the contact portion of the metal terminal plate , and the rotating body has the same rotation center axis. Inside the center
Two rotating bodies, a first rotating body on the side and a second rotating body on the outside
And the contact point is provided below each of the first and second rotating bodies.
Metal terminal plate provided with a land portion and a metal terminal provided with the land portion
Plate and the contact plate are arranged respectively, and an uneven click surface is provided on the upper surface of the first rotating body.
On the other hand, the first rotating body is provided on the upper part of the first rotating body.
Attach the first cover so as to cover, and attach the first cover
Is provided with a click portion which abuts on the unevenness of the click surface, and the base is provided between the first rotating body and the second rotating body.
Providing an inner wall for cutting, and the first cover on an upper surface of the inner wall.
And the upper part of the second rotator covers the second rotator.
Cover, while the lower surface of the base is covered with a lower cover.
Arrange the bar and secure between the lower cover and the second cover.
And the lower cover, the second cover, the base, and the second rotating body
A switch characterized by integrating .