Multi-input switch

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a multi-input switch which is suitable for use in radios, CD recorders, and navigation systems for automobiles, for example.

2. Description of the Related Art

There is a conventional multi-input switch disclosed in U.S. Patent Publication No. 5,613,600.

As shown in

FIGS. 8

to

11

, in the multi-input switch, a rotatively-operated component “R” is operated by the rotation of an operation knob “S” while a push-switch “P” is operated by the movement of the operation knob “S” in a direction perpendicular to the axis of the operation knob “S”.

The rotatively-operated component “R” is formed such that a rotary member

53

thereof is rotatably attached through a shaft

54

to a box-shaped casing

51

to which a contact member

50

having a pair of resilient contact arms

50

a

and

50

b

is fixed. A contact plate

52

sliding in contact with the resilient contact arm

50

a

in the box-shaped casing

51

is fixed to the rotary member

53

.

The push-switch “P” is formed such that a contact portion (not shown) is arranged within a cage

55

to which an operation button

56

is movably attached.

As shown in

FIG. 11

, a flat-plate-shaped insulating base plate

58

comprises a recess portion

58

a for guiding the rotatively-operated component “R”, a pair of guide rails

58

b

for preventing the rotatively-operated component “R” from coming off disposed on both sides of the recess portion

58

a

, and a recess portion

58

c

and a protruded portion

58

d

, each spaced from the recess portion

58

a.

Furthermore, in the insulating base plate

58

, fixed terminals

59

are embedded in an exposed state in the recess portion

58

a.

The rotatively-operated component “R” is attached to the insulating base plate

58

; the casing

51

of the rotatively-operated component “R” is placed on the recess portion

58

a

of the insulating base plate

58

, the guide rails

58

b

are urged in contact with step portions

51

a

of the casing

51

, and the casing

51

is elastically pressed by a torsion coil spring

60

supported by the protruded portion

58

d.

When the rotatively-operated component “R” is attached, the resilient contact arm

50

b

is in contact with contacts

59

a

exposed on the insulating base plate

58

.

The push-switch “P” is attached to the insulating base plate

58

; the cage

55

of the push-switch “P” is fitted into the recess portion

58

c

on the insulating base plate

58

, and the operating button

56

opposes a protruded portion

51

b

of the casing

51

of the rotatively-operated component “R”.

Furthermore, the operation knob “S” is attached to the rotary member

53

of the rotatively-operated component “R” by a screw

61

.

The operation of the conventional multi-input switch will now be described; when the operation knob “S” is rotated, the rotary member

53

rotates about the shaft

54

in accordance with the rotation, the contact plate

52

attached to the rotary member

53

also rotates to be contacted with and separated from the resilient contact arm

50

a

for switching the contact, the switching is derived via the resilient contact arm

50

b

and the contact

59

a

to the fixed terminal

59

.

Next, when the operation knob “S” is pushed in the direction perpendicular to the axis of the shaft

54

, i.e., the direction indicated by the arrow “Y”, the operation knob “S” moves in the direction of the arrow “Y” against the torsion coil spring

60

accompanying the rotatively-operated component “R”.

At this time, in the state that the electrical connection of the rotatively-operated component “R” is maintained, i.e., the resilient contact arm

50

b

is sliding on the contact

59

a

of the fixed terminal

59

, the protruded portion

51

b

of the casing

51

pushes the operation button

56

of the push-switch “P”.

Thus, the contact of the push-switch “P” is switched, and then when the pressing is relieved, the rotatively-operated component “R” returns to the original position accompanying the operation knob “S” owing to the torsion coil spring

60

.

At this time, in the state that the electrical connection of the rotatively-operated component “R” is maintained, i.e., the resilient contact arm

50

b

is sliding on the contact

59

a

of the fixed terminal

59

, the operation button

56

returns to the original state, so that the contact of the push-switch “P” is switched.

In this manner, the rotatively-operated component “R” is operated by the rotation of the operation knob “S” while the push-switch “P” is operated by the movement of the operation knob “S” in the direction perpendicular to the axis.

The conventional multi-input switch involves a problem that the size thereof is large because the rotatively-operated component “R” moves when the operation knob “S” is moved in the direction perpendicular to the axis.

Also, in order to maintain the electrical connection of the rotatively-operated component “R” when the rotatively-operated component “R” is moved, it is required that the resilient contact arm

50

b

slide on the contact

59

a

of the fixed terminal

59

, so that the elongation of the component life is difficult and the manufacturing cost is increased due to the complicated structure.

Furthermore, since two components, i.e., the rotatively-operated component “R” and the push-switch “P”, are operated by the operation knob “S”, there is another problem that numerous switches cannot be switched.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned problems, in accordance with a first aspect of the present invention, there is provided a multi-input switch comprising: an operation member rotatable and movable in a substantially perpendicular direction to a rotation axis of the operation member; a rotatively-operated electronic component arranged in the direction of the rotation axis of the operation member; a first switch arranged in the direction perpendicular to the rotation axis of the operation member; and a shaft member inserted into a center potion of the operation member to be retained in a retaining portion of the operation member or a shaft member retained at a center portion of an operation member while one end portion of the shaft member is retained in a rotational body of the rotatively-operated electronic component, wherein the rotatively-operated electronic component is operated via the shaft member by the rotational movement of the operation member and the first switch is operated by the perpendicular movement of the operation member, and wherein the shaft member is tiltable about the one end portion retained in the rotational body of the rotatively-operated electronic component as a supporting point.

In accordance with another aspect of the present invention, there is provided a multi-input switch comprising: an operation member having a through-hole formed so that the both sides of a retaining portion of the through-hole are conical-shaped, the operation member being rotatable and movable in a substantially perpendicular direction to a rotation axis of the operation member and also being tiltable about the retaining portion of the through-hole; a rotatively-operated electronic component arranged in the direction of the rotation axis of the operation member; a plurality of switches arranged so as to oppose the operation member in the direction perpendicular to the rotation axis of the operation member; a shaft member inserted into the through-hole of the operation member to be retained in the retaining portion while one end portion of the shaft member is retained in a rotational body of the rotatively-operated electronic component, wherein the rotatively-operated electronic component is operated via the shaft member by the rotational movement of the operation member and any one of the plurality of switches is operated by the perpendicular movement of the operation member, and wherein another one of the plurality of switches is operated by the tilting movement of the operating member.

With these features, a multi-input switch may further comprise a driving member disposed between the operation member and the first switch, the driving member being movable by the perpendicular movement of the operation member, wherein the first switch is operated via the driving member.

With these features, a multi-input switch may further comprise a case having an elongated groove, wherein the other end portion of the shaft member is inserted into the elongated groove of the case to be supported.

A multi-input switch may further comprise returning means for returning the movement of the driving member while the operation member being held by the driving member.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1

is a front sectional view of the essential part of a multi-input switch according to the present invention;

FIG. 2

is a cross-sectional view at the line II—II of

FIG. 1

;

FIG. 3

is a cross-sectional view at the line III—III of

FIG. 1

;

FIG. 4

is an assembly view of the multi-input switch according to the present invention;

FIG. 5

is a front sectional view in the essential part for illustrating operations of the multi-input switch according to the present invention;

FIG. 6

is a front sectional view in the essential part for illustrating operations of the multi-input switch according to the present invention;

FIG. 7

is a front sectional view in the essential part for illustrating operations of the multi-input switch according to the present invention;

FIG. 8

is a perspective view of a conventional multi-input switch;

FIG. 9

is a sectional view of the essential part of the conventional multi-input switch;

FIG. 10

is a sectional view of the essential part of the conventional multi-input switch; and

FIG. 11

is a perspective view of an insulating base plate according to the conventional multi-input switch.

FIG. 12

is a front sectional view of an essential part of another multi-input switch according to the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENT

A multi-input switch according to the present invention will now be described with reference to

FIGS. 1

to

7

.

FIG. 1

is a front sectional view of the essential part of the multi-input switch according to the present invention.

FIG. 2

is a cross-sectional view at the line II—II of FIG.

1

.

FIG. 3

is a cross-sectional view at the line III—III of FIG.

1

.

FIG. 4

is an assembly view of the multi-input switch according to the present invention.

FIGS. 5

to

7

are front sectional views in the essential part for illustrating operations of the multi-input switch according to the present invention.

A synthetic-resin-molded, top-opened, box-shaped case

1

has a rectangular bottom wall

1

a

and four side-walls

1

b

,

1

c

,

1

d

, and

1

e

extended upwardly from edges of the bottom wall

1

a.

In the case

1

, a cage

2

integrated with the side-wall

1

b

is formed. The cage

2

includes, a circular recess portion

2

a

, an accommodating portion

2

b

connected to the recess portion

2

a

, and a hole

2

c

disposed in the center of the recess portion

2

a.

Furthermore, in the case

1

, an elongated hole if is formed on the side-wall

1

c

opposing the side-wall

1

b

so as to oppose the hole

2

c

. In the center portions of the sidewalls

1

d

and

1

e

which oppose each other, retaining portions

1

g

and

1

h

are formed by elongated holes are formed, respectively as well as grooves

1

k

and

1

m

, respectively.

On the bottom wall

1

a

, three switches S

1

, S

2

, and S

3

formed of push switches of the same structure are spaced in a row.

In each of these switches S

1

, S

2

, and S

3

, as shown in

FIGS. 1 and 4

, an annular fixed contact

3

and a contact

4

in the center are embedded in the bottom wall

1

a

and a dome-shaped movable contact formed of a metal spring plate is arranged in a recess portion

1

j

of the bottom wall

1

a

. The periphery of the movable contact

5

is urged into contact with the fixed contact

3

while the center portion of the movable contact

5

is formed to oppose the contact

4

. The fixed contact

3

and the movable contact

5

are capable of being connected to the outside by extending terminals integrated with the respective contacts.

The movable contact

5

embedded in the recess portion

1

j

is held therein by sticking it with the bottom wall

1

a

by an adhesive tape (not shown) so as to cover the top surface thereof, for example.

When the case

1

serves as cases of the switches S

1

, S

2

, and S

3

in common in the bottom wall la in this manner, the number of parts is reduced so as to reduce the cost. However, the switches S

1

, S

2

, and S

3

may be unitized by assembling them in a separate case.

As shown in

FIG. 4

, H-shaped returning means

6

formed of a metal plate comprises a rectangular plate portion

6

b

having a hole

6

a

, spring portions

6

c

formed in the four corners of the plate portion

6

b

being bent downwardly, and a pair of arm portions

6

d

being bent upwardly from the center of both sides of the plate portion

6

b

, each arm portion

6

d

having an opening

6

e.

A synthetic-resin-molded driving member

7

comprises a rectangular bottom wall portion

7

b

having three protruded portions

7

a

protruding downwardly, a pair of side wall portions

7

d

extending upwardly from the longitudinal edges of the bottom wall portion

7

b

, each side wall portion

7

d

having a protruded portion

7

c

in the outside thereof, and a pair of side wall portions

7

f

extending upwardly from lateral edges of the bottom wall portion

7

b

having arc-shaped bearing portions

7

e

in the top portions thereof.

The driving member

7

is fitted into one between the pair of arm portions

6

d

of the returning means

6

so that the bottom wall portion

7

b

lies on top of the plate portion

6

b

of the returning means

6

.

Thereby, the protruded portions

7

c

of the driving member

7

proceed downwardly extending the pair of arm portions

6

d

outwardly by force. When the protruded portions

7

c

agree with the openings

6

e

and the arm portions

6

d

return to the original state by its springing properties, the protruded portions

7

c

are inserted and retained in the openings

6

e

, so that the driving member

7

is combined with the returning means

6

.

At this time, the plate portion

6

b

of the returning means

6

is urged in contact with the bottom wall portion

7

b

of the driving member

7

and the rather longish protruded portion

7

a

in the center of the bottom surface of the driving member

7

penetrates the hole

6

a

of the returning means

6

to protrude downwardly, while the two protruded portions

7

a

on both sides of the bottom surface of the driving member

7

protrude downwardly from between the spring portions

6

c.

The returning means

6

and the driving member

7

combined in this manner are accommodated within the case

1

. This assembling process is performed as the following: as shown in

FIGS. 1

,

2

, and

4

, the driving member

7

with the returning means

6

attached to the lower side thereof is pushed down into the case

1

first using the grooves

1

k

and

1

m

of the case

1

as guides into which the protruded portions

7

c

of the driving member

7

have been fitted; thereby the spring portions

6

c

of the returning means

6

are urged in contact with the bottom wall

1

a

; and when the driving member

7

is further pushed down against the springing properties of the spring portions

6

c

, and the protruded portions

7

c

agree with the retaining portions

1

g

and

1

h

, the protruded portions

7

c

extend outside to be retained by the retaining portions

1

g

and

1

h

, so that the driving member

7

and the returning means

6

are attached to the case

1

.

The assembled driving member

7

is usually pressed upwardly by the returning means

6

and is movable in the vertical direction within the retaining portions

1

g

and

1

h

which are elongated holes, while being tiltable about the protruded portions

7

c

as supporting points.

When the driving member

7

is assembled, the three protruded portions

7

a

formed on the bottom wall portion

7

b

oppose the respective movable contacts

5

of the switches S

1

, S

2

, and S

3

, as shown in

FIG. 1

, so that each of protruded portions

7

a

can drive the respective movable contacts

5

.

There is provided with a rotatively-operated electronic component “R” such as a rotary switch, a rotary encoder. This rotatively-operated electronic component “R” is formed such that a rotational body

8

is rotatably assembled within the recess portion

2

a

of the cage

2

integrated with the case

1

while a spring

9

for a detent is accommodated in the accommodating portion

2

b

, and furthermore a cover

10

is attached to the case

1

so as to cover the opened portion of the cage

2

.

The rotational body

8

comprises a non-circular hole

8

a

disposed in the center thereof, concave-convex portions

8

b

for the detent disposed in the outer periphery thereof, and plural movable contacts

8

c

. The rotational body

8

is assembled into the cage

2

in the state that the hole

8

a

opposes the hole

2

c

of the cage

2

. The concave-convex portions

8

b

are urged in contact with the spring

9

for the detent so that the rotation of the rotational body

8

is moderated.

In the synthetic-resin-molded cover

10

, a fixed contact

10

a

is embedded to be touched by the movable contacts

8

c

, such that switching of the contact is derived outside through the fixed contact

10

a.

When the case

1

serves as the cage

2

for the rotatively-operated electronic component “R” in common in this manner, the number of parts is reduced so that reduced cost and improved efficiency in assembling can be achieved. However, a unitized rotatively-operated electronic component “R” may be used to be attached to the case

1

.

A cylindrical operation member

11

formed of moldings of a synthetic resin, etc., comprises nicked portions

11

a

formed on the outer peripheral surface thereof, a through-hole

11

b

formed in the cylindrical axis direction, a non-circular retaining portion

11

c

formed in the intermediate portion of the axis direction within the through-hole

11

b

, and annular protruded portions

11

d

disposed in the both ends thereof.

The both sides of the through-hole

11

b

are conical in shape so that diameters thereof increase gradually toward outsides from the retaining portion

11

c

as a boundary.

In addition, the through-hole

11

b

may have the same diameter other than the smaller retaining portion

11

c.

A non-circular shaft member

12

formed of a metal, etc., having a cross-section of a rectangle, an oval, etc., comprises a non-circular roundish one end portion

12

a

, a non-circular intermediate portion

12

b

, and the other end portion

12

c

which is a smaller diameter protruded portion made by forming a step.

This shaft member

12

is inserted into the through-hole

11

b

of the operation member

11

from the other end portion

12

c

side to be a state that the other end portion

12

c

passes through the through-hole

11

c.

At this time, the non-circular intermediate portion

12

b

of the shaft member

12

agrees with the non-circular retaining portion llc of the operation member

11

, enabling the rotational operation of the operation member

11

to be transmitted to the shaft member

12

.

The assembling process of the shaft member

12

and the operation member

11

combined in this manner in the case

1

is as follows: the one end portion

12

a

of the shaft member

12

is passed through the hole

2

c

of the cage

2

first to be retained in the non-circular hole

8

a of the rotational body

8

in the state that the returning means

6

and the driving member

7

are assembled in the case

1

; in the next place, when the operation member

11

and the shaft member

12

are pushed into the case

1

in the state that the protruded portions

11

d

of the operation member

11

are arranged above the bearing portions

7

e

of the driving member

7

while the other end portion

12

c

of the shaft member

12

is located above the elongated hole

1

f

of the side wall

1

c

, the other end portion

12

c

of the shaft member

12

bends the side wall

1

c

outside to agree with the elongated hole

1

f

so that the other end portion

12

c

fits into the elongated hole

1

f

while the protruded portions

11

d

of the operation member

11

are to be urged in contact with the arc-shaped bearing portions

7

e

of the driving member

7

.

At this time, the operation member

11

is pressed upwardly by a pair of the bearing portions

7

e

of the driving member

7

elastically pressed by the returning means

6

to thereby press the shaft member

12

upwardly, so that the other end portion

12

c

is to be urged in contact with the top end of the elongated hole

1

f

and the shaft member

12

is arranged in parallel with the bottom wall

1

a.

Consequently, the operation member

11

is rotatable about the shaft member

12

as a rotation axis while being movable against springing properties of the returning means

6

in the direction indicated by the arrow H

1

(see

FIG. 5

) which is substantially perpendicular to the rotation axis and also being tiltable about retaining portion

11

c

as a supporting point.

When the operation member

11

is moved in a direction substantially perpendicular to the rotational direction, the shaft member

12

is to be tilted about the one end portion

12

a

retained in the hole

8

a

of the rotational body

8

as a supporting point while the other end portion

12

c

moves downwardly within the elongated hole

1

f.

In addition, the structure for retaining the one end portion

12

a

of the shaft member

12

in the hole

8

a

of the rotational body

8

may be gearing combination of gear-like concave-convex portions having relief portions in the axis direction.

In the multi-input switch assembled in this manner, the rotatively-operated electronic component “R” is arranged in the rotational direction of the operation member

11

while the switches S

1

, S

2

, and S

3

are arranged to oppose the operation member

11

in the direction orthogonal to the rotation axis of the operation member

11

.

The operation of the multi-input switch formed as described above will now be described with reference to

FIGS. 1

,

5

,

6

, and

7

.

In

FIG. 1

, when the operation member

11

is rotated about the shaft member

12

as a rotation axis first, the shaft member

12

is rotated.

Thereby, the rotational body

8

of the rotatively-operated electronic component “R” retained in the one end portion

12

a

of the shaft member

12

rotates with clicking feeling by the concave-convex portions

8

b

and the spring

9

for a detent while the fixed contact

10

a

is contacted with and separated from the movable contacts

8

c

for switching the contact to operate the rotatively-operated electronic component “R”.

As shown in

FIG. 5

, when the center of the operation member

11

is pressed in the direction indicated by the arrow H

1

which is substantially perpendicular to the rotation axis of the operation member

11

, it is moved downwardly accompanying the driving member

7

against springing properties of the returning means

6

.

Thereby, the rather longish protruded portion

7

a

in the center presses the movable contact

5

of the first switch S

1

located in the center so that the movable contact

5

turns over so as to contact the contact

4

connecting the fixed contact

3

to the contact

4

for switching the contact to “ON”.

At this time, the shaft member

12

is to be tilted about the one end portion

12

a

retained in the hole

8

a

of the rotational body

8

as a supporting point while the other end portion

12

c

moves downwardly within the elongated hole

1

f.

When the pressing of the operation member

11

in the direction of the arrow H

1

is retracted, the driving member

6

, the operation member

11

, and the shaft member

12

are returned to the original positions by the returning means

6

and the pressing to the movable contact

5

by the protruded portion

7

a

is also retracted, so that the movable contact

5

turns over to the original state switching the switch S

1

to “OFF”.

Next, as shown in

FIG. 6

, the right side portion from the center of the operation member

11

(the side closer to the side wall

1

c

) is pressed in the direction indicated by the arrow H

2

which is substantially perpendicular to the rotation axis of the operation member

11

, the operation member

11

is to be tilted about the retaining portion llc as a supporting point while the driving member

7

is also tilted about the protruded portions

7

c

as supporting points against springing properties of the returning means

6

, so that the protruded portion

7

a

in the right side moves downwardly.

Thereby, the rather short protruded portion

7

a

on the right presses the movable contact

5

of ,the second switch S

2

located in the right so that the movable contact

5

turns over so as to contact the contact

4

connecting the fixed contact

3

to the contact

4

for switching the contact to “ON”.

At this time, the shaft member

12

is not tilted and maintains the parallel state.

When the pressing of the operation member

11

in the direction of the arrow H

2

is retracted, the driving member

6

and the operation member

11

are returned to the original positions by the returning means

6

and the pressing to the movable contact

5

by the protruded portion

7

a

is also retracted, so that the movable contact

5

turns over to the original state switching the switch S

2

to “OFF”.

Next, as shown in

FIG. 7

, the left side portion from the center of the operation member

11

(the side closer to the side wall

1

b

) is pressed in the direction indicated by the arrow H

3

which is substantially perpendicular to the rotation axis of the operation member

11

, just like described above, the operation member

11

is to be tilted about the retaining portion

11

c

as a supporting point while the driving member

7

is also tilted about the protruded portions

7

c

as supporting points against springing properties of the returning means

6

, so that the protruded portion

7

a

in the left side moves downwardly.

Thereby, the rather short protruded portion

7

a

on the left presses the movable contact

5

of the third switch S

3

located in the left so that the movable contact

5

turns over so as to contact the contact

4

connecting the fixed contact

3

to the contact

4

for switching the contact to “ON”.

At this time, the shaft member

12

is not tilted and maintains the parallel state.

Next, when the pressing of the operation member

11

in the direction of the arrow H

3

is retracted, the driving member

6

and the operation member

11

are returned to the original positions by the returning means

6

and the pressing to the movable contact

5

by the protruded portion

7

a

is also retracted, so that the movable contact

5

turns over to the original state switching the switch S

3

to “OFF”.

By the operation described above, switching of numerous switches can be performed. When the multi-input switch is used for radios, for example, the rotatively-operated electronic component “R” is used for manual tuning and S

1

is used to memorize the tuned station. Also, S

2

is used for auto-tuning by increasing the frequency and S

1

is used to memorize the tuned station while S

3

is used for auto-tuning by decreasing the frequency and S

1

is used to memorize the tuned station.

The above mentioned embodiment shows the switches S

1

, S

2

and S

3

. Another embodiment as shown in

FIG. 12

is a multi-input switch which has only one switch S

1

. In this embodiment, a shaft member

12

and an operation member

11

may be formed as a single component so that the shaft member

12

is retained at a center portion of the operation member

11

.

In the multi-input switch according to the present invention, the rotatively-operated electronic component is arranged in the direction of the rotation axis of the operation member while switches are arranged in the direction perpendicular to it. By the rotational movement of the operation member, the rotatively-operated electronic component is operated via the shaft member while by the perpendicular movement of the operation member, the shaft is tilted to operate the switches, so that the entire rotatively-operated electronic component does not move to improve the space-saving factor enabling the switch to be miniaturized.

Since the entire rotatively-operated electronic component does not move, the resilient contact arm and the fixed terminal like in the conventional one are not to be required, resulting in increasing the life and reducing manufacturing cost.

In the direction of the rotation axis of the operation member having a through-hole formed so that the both sides thereof are conical-shaped, the rotatively-operated electronic component is arranged, and plural switches are arranged in the perpendicular direction to it. By the rotational movement of the operation member, the rotatively-operated electronic component is operated via the shaft member while by the perpendicular movement of the operation member, one of the plural switches is operated, and furthermore, by the tilting movement of the operation member, another one of the plural switches is operated. Therefore, the entire rotatively-operated electronic component does not move to improve the space-saving factor enabling the switch to be miniaturized.

Since the entire rotatively-operated electronic component does not move, the resilient contact arm and the fixed terminal like in the conventional one are not to be required, resulting in increasing the life and reducing manufacturing cost.

By forming the through-hole of the operation member to be conical-shaped, the shaft member can be easily inserted into the retaining portion, so that assembling efficiency is improved enabling the switch to be inexpensive due to the improved productivity. Thereby, any of plural switches can be turned “on” or “off” by the tilting movement in accordance with the pushing position. This enables the multi-input switch to operate numerous switches, resulting in being applicable to various apparatuses.

By arranging the driving member between the operation member and the switches, the movement of the operation member can be transmitted to the driving member, which is a different part, giving freedom of choice in arranging switches, etc., so that a versatile switch can be obtained while the multi-input switch capable of performing tilting movement can be provided.

Since the other end portion of the shaft member is supported by the elongated hole of the case, any other part for supporting it is not required, so that an inexpensive switch with improved assembling efficiency can be provided.

Furthermore, returning means for returning the driving member and the operation member is provided, so that switching operation of switches is reliable and the multi-input switch capable of performing stable operations can be provided.

Number	Name	Date
4175220	Johnston et al.	Nov 1979
4201899	Owen	May 1980
4255633	Johnston et al.	Mar 1981
5448240	Morito	Sep 1995
5459292	Nagano et al.	Oct 1995
5613600	Yokoji et al.	Mar 1997
5705778	Matsui et al.	Jan 1998
5847335	Sugahara et al.	Dec 1998
5886310	Kataoka et al.	Mar 1999
6049044	Mizobuchi	Apr 2000
6124555	Isikawa	Sep 2000

Multi-input switch

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US Referenced Citations (11)