JP2000331569A - Compound switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a switch with short height, a small size, and high operating capability by always bringing a common fixed contact of a rotary switch part into contact with a moving contact, and intermitting plural fixed contacts to the moving contact moving by the rotation of the rotor. SOLUTION: A square dome contact 4 of a tactile switch part is pushed down in two steps, and in one step, not reversed and since its side edge comes in contact with a second fixed contact 12, a first fixed contact 11 always coming in contact with a dome contact 4 and the second fixed contact 12 are closed. In the second step, the square dome contact 4 is reversed, and since the central part comes in contact with a third fixed contact 13, the first fixed contact 11 and the third fixed contact 13 are closed, and multi-function is realized, The moving contact of the rotary switch part always comes in contact with a common fixed contact 20, and the moving contact comes in contact with either one of plural fixed contacts 21a-29a according to the position. When the position of the moving contact is changed with a rotor 5, the common fixed contact is closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a compound switch having multiple functions.

[0002]

2. Description of the Related Art As a conventional multifunctional switch, there is a two-stage tactile switch. FIG. 8 is a longitudinal sectional view of an example of a conventional two-stage tactile switch. The two-stage tactile switch 100 includes a case 101
, Two dome-shaped tact plates 102 and 103, a flexible sheet 104, and a cover 105. A center contact 106 is formed at the center in the case 101,
The fixed contacts 107 and 108 are formed outside thereof. The tact plate 102 is disposed so as to cover the central contact 106, and a part of the periphery thereof is disposed on the fixed contact 107. The tact plate 103 has a larger diameter than the tact plate 102, and is disposed on the fixed contact 108 so as to cover the tact plate 102 and be concentric with the tact plate 102.
The flexible sheet 104 is attached to an upper end of the case 101. The cover 105 has a through hole 105 at the center.
a, and is adhered on the flexible sheet 104. In this two-stage tactile switch 100,
When the tact plate 103 is pressed down and dented through the flexible sheet 104, the tact plate 103
2 and the fixed contacts 107 and 108 are closed. When the tact plate 103 is further depressed, the tact plate 102 is recessed downward while being in contact with the tact plate 103, contacts the central contact 106, and closes between the fixed contact 107 and the central contact 106. It is made up of

Conventionally, as shown in FIG. 9, there is a composite switch 130 in which the above-described two-stage tactile switch 100 and rotary switch 110 are combined in order to provide more functions. This composite switch 1
30 is a two-stage tactile switch 1 on the substrate 120.
00 and a rotary switch 110 are separately mounted, and a two-stage tactile switch 100 is attached with a key top (not shown) and operated vertically, and the rotary switch 110 is dialed into a hole 111. (Not shown) to operate in the rotation direction.

[0004]

In the structure of the conventional two-stage tactile switch, since two tact plates are stacked, the height of the switch is increased and the number of parts is increased. There is.

Further, in the conventional composite switch, the two-stage tactile switch and the rotary switch are separately mounted on the substrate, so that the number of parts is large, the number of mounting steps is large, and the manufacturing cost is high. . Also, since the switch is divided into two parts, there is a problem that the mounting area on the substrate is large and high-density mounting cannot be performed. Furthermore,
Since the switch is divided into two, there is a problem that the operation range is widened and it is difficult to operate.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a composite switch which is easy to reduce in height and size, is low in cost, requires a small mounting area, and is excellent in operability. is there.

[0007]

According to the first aspect of the present invention, a base, a dome contact disposed on the base, a rotor rotatably disposed on the dome contact, and the rotor A movable contact that is attached to the rotor and moves by rotation of the rotor; and a click member that engages with the rotor when the rotor rotates to give a click feeling. 1
And a third fixed contact, a common fixed contact for a rotary switch unit, and a plurality of fixed contacts.
The fixed contact always contacts the dome contact, and the second fixed contact contacts one side edge of the dome contact when the dome contact is pressed down to the first step, and the third fixed contact When the fixed contact is pressed down to the second stage where the dome contact is inverted, the fixed contact comes into contact with the central portion of the dome contact, the common fixed contact for the rotary switch always contacts the movable contact, and the rotary A composite switch is obtained, wherein the plurality of fixed contacts for the switch section are intermittently connected to the movable contact that moves by the rotation of the rotor.

According to the second aspect of the present invention, the third fixed contact is provided at a central portion of the base, and the common fixed contact for the rotary switch portion and the plurality of fixed contacts are provided in the third fixed contact. 2. The composite switch according to claim 1, wherein the composite switch is provided around the fixed contact.

According to a third aspect of the present invention, there is provided the composite switch according to the first or second aspect, wherein a rubber sheet is interposed between the dome contact and the rotor.

According to the fourth aspect of the present invention, at least the first to third fixed contacts for the tactile switch portion, a common fixed contact and a plurality of fixed contacts for the rotary switch portion, and the dome contact. The cover according to any one of claims 1 to 3, wherein a cover that covers the movable contact and covers the rotor in a state where a part of the rotor is exposed is provided on the base. The composite switch described in the section is obtained.

According to a fifth aspect of the present invention, there is provided the composite switch according to the fourth aspect, wherein the click member is provided on the cover.

[0012]

The composite switch of the present invention is composed of a tactile switch and a rotary switch.

The tactile switch section includes a base, a dome contact, and first to third fixed contacts for the tactile switch section. Dome contact is 2
It is configured to be pressed in stages. In the first stage, the dome contact is not inverted, and one side edge thereof is in contact with the second fixed contact, so that the first fixed contact and the second fixed contact that are always in contact with the dome contact are closed. To achieve. In the second stage, the dome contact is inverted, and the central portion thereof contacts the third fixed contact, so that the first fixed contact and the third fixed contact are closed. Therefore, the tactile switch portion of the composite switch of the present invention exhibits multiple functions with one dome contact, and the single dome contact can easily reduce the height of the switch.

The rotary switch comprises a base, a rotor, a movable contact, a click member, a common fixed contact for the rotary switch, and a plurality of fixed contacts for the rotary switch. The movable contact always contacts the common fixed contact, and the movable contact contacts one of the plurality of fixed contacts depending on its position. Therefore, in the rotary switch section, by changing the position of the movable contact by the rotor, the common fixed contact and the selected fixed contact are closed.

Since the common fixed contact and the plurality of fixed contacts for the rotary switch are provided on the same base together with the first to third fixed contacts for the tactile switch, the mounting area is reduced. be able to.

Further, since the composite switch of the present invention has a small number of parts, the manufacturing cost can be reduced.

Further, since the rotor and the dome contact can be operated at the same position, the operability is excellent.

[0018]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a composite switch according to an embodiment of the present invention, FIG. 2 shows the composite switch of FIG. 1, (a) is a plan view showing the inside, (b)
FIG. 3A is a sectional view taken along line AA of FIG. 3A, FIG. 3C is a side view of a half section, FIG. 3 shows the dome contact shown in FIG.
Is a plan view, (b) is a front view, FIG. 4 is a graph showing the relationship between the load and displacement of the dome contact shown in FIG. 3, and FIG. 5 is FIG.
(A) is a plan view, (b) is a front view, (c) is a side view, FIG. 6 shows a circuit of a tactile switch section of the composite switch of FIG. Circuit diagram at the time of operation, (b) is a circuit diagram at the time of the first stage operation,
7C is a circuit diagram at the time of the second-stage operation, and FIG. 7 is a circuit diagram of the rotary switch unit of the composite switch of FIG.

Referring to FIGS. 1 to 7, a composite switch 1 according to the present embodiment comprises a base 3 and a square dome contact 4.
, A rotor 5, a movable contact 6, a click member 7, a rubber sheet 8, and a cover 9.

The base 3 comprises a base body 31 and a shaft 32
, A wall part 33 and a stopper part 34. The base body 31 has a substantially plate shape. The shaft portion 32 has a substantially disk shape and is integrally formed at the center of the upper surface of the base body 31. The central portion of the shaft portion 32 has a square recessed housing recess 3 for housing the square dome contact 4.
2a is formed. The wall portions 33 are formed integrally with the front and rear edges of the upper surface of the base body 31 respectively. Each wall portion 33 has a substantially semicircular concave portion 33 a for avoiding contact with the rotor 5. The stopper portion 34 includes the shaft portion 32
And is integrally formed on the upper surface of the base body 31 so as to be adjacent to. This stopper portion 34 engages with the rotor 5,
The rotation angle of the rotor 5 is limited.

On the upper surface of the base body 31, first to third fixed contacts 11 to 13 for a tactile switch section are provided.
In addition, a common fixed contact 20 and nine fixed contacts 21 to 29 for the rotary switch section are formed.

The first fixed contact (com1) 11 for the tactile switch is provided at the front of the inner bottom surface of the accommodation recess 32a, and is provided with a projection 41 of the dome contact 4 described later.
It comes in contact with. This first fixed contact (co
A part of the m1) 11 is extended so as to protrude from one side surface of the base 3, and the protruding portion forms a terminal 11a.

The second fixed contact (A) 12 for the tactile switch is provided on one side edge of the inner bottom surface of the accommodation recess 32a, and when the dome contact 4 is pushed down to the first stage, this contact is provided. It comes into contact with one side edge of the dome contact 4. A part of the second fixed contact (A) 12 is extended so as to protrude from one side surface of the base 3, and this protruding part forms a terminal 12a.

The third fixed contact (B) 13 for the tactile switch portion is provided at the center of the inner bottom surface of the housing recess 32a, and when the dome contact 4 is pushed down to the second inverted position, It comes into contact with the center of the dome contact 4. Third fixed contact (B) 13
Is extended so as to protrude from one side surface of the base 3, and this protruding portion forms a terminal 13a.

The common fixed contact (com2) 20 for the rotary switch section is arc-shaped, and forms a circle centered on the center point of the base 3 (where the third fixed contact 13 is formed). Extending along. This common fixed contact (co
m2) Both ends of the base 20 are extended so as to protrude from one side surface of the base 3, and these protruding portions each constitute a terminal 20a.

The remaining nine fixed contacts (-) 21-29 for the rotary switch section are common fixed contacts (com2).
They are formed at equal intervals along the concentric circles of 20 reference circles. Part of each fixed contact (~) 21-29 is
Each is extended so as to protrude from the other side surface of the base 3, and these protruding portions are respectively connected to the terminals 21a to 21a.
29a.

The dome contact 4 is substantially plate-shaped, and has convex portions 41 and 42 protruding toward the base 3 at the front and rear edges thereof, respectively. It has a dome 43 bulging away. The dome contact 4 is housed in a housing recess 32 a formed in the base 3. Pressing of the dome contact 4 is performed in two stages as shown in FIG.
In the first stage, only the front and rear edges of the dome contact 4 are pressed and bent, and one side of the dome contact 4 contacts the second fixed contact (A) 12. In the second stage, the dome 43 is crushed and inverted, that is, the center of the dome 43 is located below the side edge of the dome 43, and as a result, the center of the dome 43 is , And the third fixed contact (B) 13. The inverted dome part 43 releases the force applied here,
It returns naturally to its original state. The pressing operation of the dome contact 4 is performed by a key top (not shown).
Is inserted into an insertion hole 56 of the rotor 5 to be described later, and the key top presses the dome contact 4 via the rubber sheet 8.

The rotor 5 is substantially disk-shaped, and has concave portions 51 and convex portions 52 formed alternately on the side surfaces thereof. A bearing recess 53 recessed in a substantially circular shape is formed at the center of the lower surface of the rotor 5, and a stopper recess 54 recessed in a fan shape shallower than the bearing recess 53 is formed adjacent to the outside of the bearing recess 53. ing. The rotor 5 is rotatably disposed on the dome contact 4 by fitting the bearing concave portion 53 to the shaft portion 32 of the base 3. At the same time, the stopper portion 34 of the base 3 is accommodated in the stopper concave portion 54, and the end of the stopper concave portion 54 and the stopper portion 34 are in contact with each other, thereby limiting the rotation angle of the rotor 5. Further, on the upper surface of the rotor 5,
A groove 55 is formed, and an insertion hole 56 is formed in the center of the rotor 5.
Are drilled. Rotating operation of the rotor 5 is performed by fitting a key provided on a dial (not shown) into the groove 55 and rotating the dial.

The movable contact 6 has substantially U-shaped first to fourth contact pieces 61 to 64. The movable contact 6 is attached to the rotor 5, and moves by the rotation of the rotor 5. The first and second contact pieces 61 and 62
The third and fourth contact pieces 63 and 64 are always in contact with the fixed contact 20, and the third and fourth contact pieces 63 and 64
It is configured to contact any one of the first to ninth fixed contacts 21 to 29 and not to contact the other fixed contacts.

The click member 7 has elasticity and is plate-like, and has a convex portion 71 at the center thereof. This projection 71
However, from the state where the rotor 5 is fitted to the concave portion 51, when the vehicle gets over the adjacent convex portion 52 and re-fits the adjacent concave portion 51, a click feeling can be obtained. This click member 7
It is formed integrally with the cover 9.

The rubber sheet 8 is interposed between the dome contact 4 and the rotor 5. Therefore, the dome contact 4 is configured to be pressed down via the rubber sheet 8.

The cover 9 has a hole 91 at the center thereof. The hole 91 is for exposing a central portion of the upper end of the rotor 5. The click member 7 is formed integrally with one side edge of the cover 9 as described above. The cover 9 is attached to the base 3 so as to cover the upper surface of the base 3. Accordingly, the cover 9 covers the first to third fixed contacts 11 to 13, the common fixed contact 20 and the fixed contacts 21 to 29, the dome contact 4, the movable contact 6, the rubber sheet 8, and the rotor 5.
Is covered with its upper end exposed.

The two-stage tactile switch section is constituted by the base 3, the first to third fixed contacts 11 to 13 for the tactile switch section, the square dome contact 4, and the rubber sheet 8. The circuit diagram is shown in FIG.

On the other hand, the above-mentioned base 3, the common fixed contact 20 and the fixed contacts 21 to 29 for the rotary switch section are provided.
, The rotor 5, the movable contact 6, and the click member 7,
A rotary switch section is configured, and its circuit diagram is shown in FIG.

In the present embodiment, the click member 7 is integrated with the cover 9; however, the present invention is not limited to this. The location where the click member is provided is not limited to the cover, and may be provided on the base, for example.

The number of fixed contacts for the rotary switch is not particularly limited.

[0037]

As described above, the composite switch of the present invention is configured so as to generate multiple functions with one dome contact, so that the height can be easily reduced.

In the composite switch of the present invention, the fixed contact for the tactile switch section and the fixed contact for the rotary switch section are provided on one base.
The miniaturization is easy, and the mounting area is small.

Further, the composite switch of the present invention has a small number of parts and is easy to manufacture, so that the manufacturing cost can be reduced.

Further, the composite switch of the present invention can operate the tactile switch section and the rotary switch section at one place, and thus has excellent operability.

[Brief description of the drawings]

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

FIGS. 2A and 2B show the composite switch of FIG. 1, wherein FIG. 2A is a plan view showing the inside of the composite switch, FIG. 2B is a sectional view taken along line AA of FIG.
(C) is a half sectional side view.

3A and 3B show the dome contact shown in FIG. 1, wherein FIG. 3A is a plan view and FIG. 3B is a front view.

FIG. 4 is a graph showing a relationship between a load and a displacement of the dome contact shown in FIG.

FIG. 5 shows the composite switch of FIG. 1, (a) is a plan view,
(B) is a front view, (c) is a side view.

6 shows a circuit of a tactile switch section of the composite switch of FIG. 1, (a) is a circuit diagram when the switch is not operated,
(B) is a circuit diagram at the time of the first stage operation, and (c) is a circuit diagram at the time of the second stage operation.

FIG. 7 is a circuit diagram of a rotary switch section of the composite switch of FIG. 1;

FIG. 8 is a longitudinal sectional view of an example of a conventional tactile switch.

FIG. 9 is a perspective view of a conventional composite switch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Composite switch 3 Base 4 Square dome contact 5 Rotor 6 Movable contact 7 Click member 8 Rubber sheet 9 Cover 11 First fixed contact 12 Second fixed contact 13 Third fixed contact 20 Common fixed contact 21-29 Fixed contact

Claims (5)

[Claims] 1. A base, a dome contact disposed on the base, a rotor rotatably disposed on the dome contact, and a movable contact attached to the rotor and moved by rotation of the rotor. A click member that engages with the rotor when the rotor rotates to give a click feeling, and the base has first to third fixed contacts for a tactile switch portion, and a click member for a rotary switch portion. A common fixed contact and a plurality of fixed contacts are provided,
The first fixed contact is always in contact with the dome contact, and the second fixed contact is in contact with one side edge of the dome contact when the dome contact is pressed down to the first step. The third fixed contact is in contact with the central portion of the dome contact when the dome contact is pressed down to the second stage where the dome contact is inverted, and the common fixed contact for the rotary switch unit is always in contact with the movable contact. A plurality of fixed contacts for the rotary switch unit are intermittently connected to the movable contact that is moved by the rotation of the rotor. 2. A method according to claim 1, wherein the third fixed contact is provided at a central portion of the base, and a common fixed contact and a plurality of fixed contacts for the rotary switch are provided around the third fixed contact. The composite switch according to claim 1, wherein 3. The apparatus according to claim 1, wherein a rubber sheet is interposed between the dome contact and the rotor.
Or the composite switch according to 2. 4. At least a first to a third fixed contact for the tactile switch, a common fixed contact and a plurality of fixed contacts for the rotary switch, the dome contact, and the movable contact. The composite switch according to any one of claims 1 to 3, wherein a cover that covers the rotor with a part thereof exposed is provided on the base. 5. The composite switch according to claim 4, wherein said click member is provided on said cover.