JP2000276981A - Push rotary switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a space-saving and low-cost push rotary switch. SOLUTION: A plurality of fixed contact pieces 10 are implanted in a base, a movable contact circuit for rotary switching making contact with the fixed contact pieces 10 is formed on a printed circuit board 9 placed on the base, a rotary shaft 3 linked to the printed circuit board 9 is put through a housing 1 forming a switch body, and the housing 1 is fitted into the base. By turning the rotary shaft 3 interlocking with the printed circuit board 9, switching between circuits takes place, and thus this switch acts as a rotary switch. A hollow part is axially bored in the rotary shaft 3, a depressing shaft 6 is provided therein in a vertically movable manner, a contact circuit for push-button switching is formed on a back surface of the surface of the printed circuit board 9 where the movable contact circuit for rotary switching is formed, the contact circuit for push-button switching is connected to the movable contact circuit for rotary switching, a curved movable contact piece 3 is placed on the contact circuit for push-button switching, and the contact circuit for push- button switching is closed by depressingly operating the depressing shaft 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push rotary switch for setting a circuit of an electronic device or the like.

[0002]

2. Description of the Related Art Conventionally, a rotary switch for setting a circuit and a push button switch for validating the circuit setting have been separately mounted. As a prior example of a rotary switch with a push-button switch for the purpose of integration, it is disclosed in Japanese Patent Application Laid-Open No. Hei 6-176662 and Japanese Utility Model Application Laid-Open No. Hei 6-88032 as a composite operation type switch.

[0003]

The composite switch in which the contact for the push button switch is added to the base portion of the rotary switch has an effect of reducing the mounting space as compared with the case where the rotary switch and the push button switch are separately mounted. Since the contacts of both functions are arranged in the same plane of the base, the area of the base cannot be reduced below a certain level, which limits the space saving. In addition, there are disadvantages in that the assembly work of the switch and the processing of parts such as the base are complicated and the cost is high. The present invention solves the above disadvantages,
The invention has been invented in order to further reduce the space and to provide an inexpensive push rotary switch.

[0004]

A printed circuit board on which a base on which a plurality of fixed contact pieces are implanted and a movable contact circuit for a rotary switch which comes into contact with the fixed contact pieces is mounted on the base, and the printed board is printed. A rotating shaft connected to the board is passed through a housing forming the switch body, the housing is hung from above the base, and the printed circuit board is interlocked by rotating the rotating shaft to perform circuit switching setting. In the rotary switch, a hollow portion is formed in the hollow direction in the axial direction of the rotating shaft, and a pressing shaft is provided in the hollow portion so as to be vertically movable, and a push button switch is provided on the back surface of the rotary switch movable contact circuit forming surface of the printed circuit board. A contact circuit is formed and connected to the front and back with the movable contact circuit for the rotary switch, and a curved movable contact piece is formed on the contact circuit for the push button switch. It mounted to be configured to close the contact circuit for the push button switch by pressing operation of the pressing axis.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The push rotary switch of the present invention has a structure in which a contact circuit for a push button switch is formed on the back side of a printed circuit board on which a movable contact circuit for the rotary switch is formed. Switches can be combined in a minimum space. Further, O formed by an elastic member between the housing and the rotating shaft, between the rotating shaft and the pressing shaft, and between the housing and the base.
Since the ring is provided, cleaning and waterproofness can be obtained.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present embodiment will be described below in detail with reference to the drawings. FIG. 1 is a front sectional view showing a first embodiment of a push rotary switch according to the present invention, FIG. 2 is an exploded perspective view thereof, FIG. 3 is a diagram of a movable contact circuit for a rotary switch formed on a printed circuit board thereof, and FIG. FIG. 4 is a contact circuit diagram for a push button switch formed on the back surface.

In these figures, a plurality of contact terminals 13 and fixed contact pieces 10 are provided on a base 11 formed of an insulating member.
Are integrally formed and fixed by insert molding.

A movable contact circuit for a rotary switch 1
The printed circuit board 9 on which the pattern 4 is formed is a fixed contact piece 10
The movable contact circuit 14 for a rotary switch is placed facing above. A push button switch contact circuit 15 is formed in a pattern on the back surface of the rotary switch movable contact circuit 14 of the printed circuit board 9, and the rotary switch movable contact circuit 14 and the push button switch contact circuit 15 are formed as through-hole circuits. 16 are connected.

The movable contact piece 8 formed in a curved shape is placed on the contact circuit 15 for the push button switch of the printed circuit board 9, and the rotating shaft 3 having the pressing shaft 6 housed in the hollow portion from above is mounted on the printed circuit board 9. 9 and the housing 1 and the base 1 with the rotary shaft 3 penetrating from the housing 1 and the push-down shaft 6 from the rotary shaft 3.
1 is fitted into the concave and convex portions to constitute the push rotary switch of the present invention.

The rotating shaft 3 guides the pressing shaft 6 in the vertical direction and locks the pressing shaft 6 appropriately so as not to rattle.
A leaf spring 4 having a convex portion 5 is press-fitted into the rotating shaft 3, and the convex portion 5 elastically contacts a switching index concave / convex portion 17 formed inside the housing 1 to provide a sense of switching operation of the rotary circuit. generate.

Further, a convex portion 7 is formed downward substantially at the center of the pressing shaft 6, and the pressing force of the pressing shaft 6 reverses the movable contact piece 8 by the convex portion 7 so that the contact for the push button switch is formed. The circuit 15 is closed.

In the push rotary switch constructed as described above, since the pressing shaft 6 is disposed substantially at the center of the rotating shaft 3, the rotation operation of the rotary switch and the pressing operation of the push button switch are released. The movable contact circuit 14 for the rotary switch and the contact circuit 15 for the push button switch are configured not to be on the same plane but to be vertically overlapped on both sides of the printed circuit board 9 so that the base is constructed. In addition, it is possible to provide an inexpensive and space-saving push rotary switch such that the area of the switch 11 can be made smaller, the switch assembly operation can be simplified, and the base 11 itself can be easily machined.

FIG. 6 is a front sectional view showing a second embodiment of the present invention in which the push rotary switch has a waterproof structure.
O-rings 50, 51, 52 formed of elastic members are provided between the housing 31 and the rotating shaft 33, between the rotating shaft 33 and the pressing shaft 36, and between the housing 31 and the base 41. In the push rotary switch configured as described above, the gap between the components forming the outer shell is closely adhered by the respective O-rings, so that the push rotary switch can obtain the cleaning property and the waterproof property in addition to the features of the first embodiment.

[0014]

As described above, according to the present invention, the following effects can be obtained. (1) Since the movable contact circuit for the rotary switch and the contact circuit for the push button switch are vertically arranged on both sides of the printed circuit board, the shape of the base can be reduced, and the horizontal direction of the switch can be reduced. The size of the device can be reduced, which contributes to space saving of the device. (2) Since the movable contact circuit for the rotary switch and the contact circuit for the push button switch are vertically arranged on both sides of the printed circuit board, there is no need to complicate the base shape, and the base can be processed. It becomes easy and an extremely inexpensive push rotary switch can be obtained. (3) Since the pressing shaft is arranged at substantially the center of the rotating shaft, the rotating operation of the rotary switch and the pressing operation of the push button switch can be continuously performed without releasing the hand.
A push rotary switch with excellent operability can be provided. (4) Since the pressing axis is returned by the curved movable contact piece and the fixed contact piece, a dedicated return member is not required, so that a push rotary switch having a low height and easy assembly can be obtained. (5) Since an O-ring formed of an elastic member is provided between the housing and the rotating shaft, between the rotating shaft and the pressing shaft, and between the housing and the base, cleaning and waterproofness are improved. A push rotary switch having excellent environmental resistance can be obtained.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing a first embodiment of a push rotary switch of the present invention.

FIG. 2 is an exploded perspective view showing a first embodiment of the push rotary switch of the present invention.

FIG. 3 is a movable contact circuit diagram for a rotary switch on a printed circuit board, showing a first embodiment of the push rotary switch of the present invention.

FIG. 4 is a contact circuit diagram for a push button switch on a printed circuit board, showing a first embodiment of the push rotary switch of the present invention.

FIG. 5 is a sectional view of the inside of a housing showing a first embodiment of the push rotary switch of the present invention.

FIG. 6 is a front sectional view showing a second embodiment of the push rotary switch of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 31 Housing 2 Fitting hole part 3 Rotating shaft 4 Leaf spring 5 Convex part 6, 36 Depressed axis 7 Convex part 8 Movable contact piece 9 Printed circuit board 10 Fixed contact piece 11, 41 Base 12 Fitting convex part 13 Contact terminal 14 Movable contact circuit for rotary switch 15 Contact circuit for push button switch 16 Through-hole circuit 17 Switching index uneven part 50, 51, 52 O-ring

Claims (2)

[Claims] 1. A base having a plurality of fixed contact pieces implanted therein,
A printed circuit board having a movable contact circuit for a rotary switch in contact with the fixed contact piece is placed on the base, and a rotating shaft connected to the printed circuit board is passed through a housing forming a switch body, and the housing is formed. In a rotary switch, which is hung from above a base and rotates and rotates the rotary shaft to switch the circuit in conjunction with the printed circuit board, a hollow portion is formed by drilling a hollow portion in the axial direction of the rotary shaft. A push shaft is provided so as to be movable up and down, and a contact circuit for a push button switch is formed on the back surface of the rotary switch movable contact circuit forming surface of the printed circuit board so as to make front and back connection with the rotary switch movable contact circuit. A curved movable contact piece is placed on the button switch contact circuit, and the push-button switch contact is made by a pushing operation of the pushing shaft. Push rotary switch which is characterized in that to close the road. 2. An O-ring formed of an elastic member is provided between the housing and the rotation shaft, between the rotation shaft and the pressing shaft, and between the housing and the base. The push rotary switch as described.