JPH0714530U - Rotary switch - Google Patents

Abstract

(57) [Abstract] [Purpose] To simplify the structure of the operation unit in a rotary switch having a function of pressing a key switch. [Structure] The stem 40 is inserted into the cylindrical portion 22 of the rotor 20. The stem 40 moves freely in the axial direction, and the key switch 60 is operated by the movement. The knob 50 for rotating the rotor 20 is movable in the axial direction with respect to the cylindrical portion 22 of the rotor 20. The stem 40 is operated by moving the knob 50 in the axial direction. The knob 50 for rotating the rotor 20 also has a function of pressing the key switch 60.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotary switch having a function of pressing a key switch.

[0002]

[Prior art]

 A conventional rotary switch capable of pressing a key switch includes a knob for rotating the rotor and a key top for pressing the key switch. In order to assemble the key top, a through hole is provided in the center of the knob, and the key top can be pressed within the through hole of the knob independently of the knob.

[0003]

[Problems to be solved by the device]

 In such a rotary switch that also serves as a key switch, the operation unit has a two-piece structure of a knob for rotating the rotor and a key top for pressing the key switch, which complicates the structure of the operation unit. . As a result, the manufacturing cost increases due to the increase in the number of parts. In addition, the following design restrictions occur.

Since the central portion of the rotor is occupied by the key top, it becomes difficult to incorporate a light emitting body such as a lamp or an LCD in the operating portion. Since the key top becomes smaller, it is difficult to provide a locking claw on it.

The present invention was devised in view of such circumstances, and a rotary switch having a simple structure in which a knob for rotating a rotor also has a function of pressing a key switch and having a simple structure The purpose is to provide.

[0006]

[Means for Solving the Problems]

 The rotary switch according to the present invention comprises a body for holding a substrate having a switch pattern formed on the front surface thereof, and a body rotatably incorporated in the body. A brush attached to the back surface is brought into contact with the switch pattern of the substrate and the central portion A cylindrical portion is projected on the surface side of the rotor, and a through hole is formed in the central portion including the inside of the cylindrical portion, and a rotor is inserted into the through hole of the rotor so as to be movable in the axial direction. It has a cylindrical stem for operating the switch, and an outer cylinder part that protrudes to the back surface side and is fitted onto the cylindrical part of the rotor, and the outer cylinder part is fixed to the rotor cylindrical part in the circumferential direction. And a boss that is axially movable and that operates the stem in the axial direction in accordance with the axial movement, is provided with a knob that is provided inside the outer tubular portion. .

[0007]

[Action]

 When the knob is rotated in the circumferential direction, the outer cylinder part rotates, and the rotation is transmitted to the cylindrical part of the rotor, whereby the rotor rotates. When the knob is pressed in the axial direction, the operation is transmitted to the stem via the boss of the knob, and the key switch is operated. Thus, the knob for rotating the rotor also has the function of pressing the key switch.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view of a rotary switch showing an embodiment of the present invention, FIG. 2 is an exploded perspective view of the rotary switch, and FIG. 3 is a vertical sectional view and a bottom view of a knob used in the rotary switch. FIG. 4 is a vertical cross-sectional view and a bottom view of the stem used in the rotary switch.

The present rotary switch is a so-called shuttle switch of a midpoint return type, and has a body 10, a rotor 20, a frame 30, a stem 40 and a knob 50 as main components.

The body 10 has a through hole 11 in the center and an annular recess 12 that is open to the front side on the outside thereof. The substrate 13 having the switch pattern formed on the surface is inserted into the body 10 to expose the switch pattern on the surface in the recess 12. A key switch 60 is held in the through hole 11 of the body 10. A protrusion 14 that supports the lamp 70 is provided between the through hole 11 and the recess 12.

The rotor 20 is rotatably incorporated in the recess 12 of the body 10. The brush 21 attached to the back surface of the rotor 20 is in pressure contact with the switch pattern of the substrate 13 in the body 10. A cylindrical portion 22 is provided at the center of the surface of the rotor 20. The inside of the cylindrical portion 22 communicates with a central hole provided in the disk-shaped rotor body, and a through hole 23 is formed in the central portion of the rotor 20.

On the outer peripheral surface of the cylindrical portion 22 of the rotor 20, four vertical grooves 24 are provided at intervals of 90 ° in the circumferential direction. Locking holes 25 penetrating the inner and outer surfaces of the cylindrical portion 22 are provided in the respective lower portions of the two facing vertical grooves 24 of the four vertical grooves 24.

The frame 30 is attached to the body 10 and holds the rotor 20 in the body 10. The frame 30 has a circular hole 31 at the center thereof through which the cylindrical portion 22 of the rotor 20 passes, and holds an annular spring 80 on the back surface side around the circular hole 31. The spring 80 is attached to the back surface side of the frame 30 by a cut-and-raised piece formed by cutting and raising a part 32 of the frame 30 to the back surface side, and elastically holds the rotor 20 at the midpoint position.

The stem 40 has a cylindrical shape and is inserted into the cylindrical portion 22 of the rotor 20 so as to be movable in the axial direction. The stem 40 has a pair of leg portions 41 extending downward, and a claw 44 provided on the outer surface of the lower end portion of the leg portion 41 engages with the body 10 or the rotor 20 to prevent the stem 40 from coming off. Further, the coil-shaped spring 90 externally fitted to the pair of leg portions 41 urges it upward.

As shown in FIG. 4, a horizontal portion 42 is installed between the upper ends of the pair of leg portions 41 of the stem 40. At the center of the horizontal portion 42, a protrusion 43 protruding downward is continuously provided. When the stem 40 is pushed downward against the urging force of the spring 90, the lower end of the protrusion 43 hits the key switch 60 held in the through hole 11 of the body 10 and the key switch It is designed to operate the 60. The ramp 70 is located inside the stem 40 inserted into the cylindrical portion 22 of the rotor 20.

The knob 50 has a cylindrical shape, and has an outer cylindrical portion 51 that is externally fitted to the cylindrical portion 22 of the rotor 20 at a lower portion thereof. As shown in FIG. 3, the outer cylinder portion 51 includes main bodies 52 and 52 having a semi-cylindrical shape, and a pair of leg portions 53 and 53 provided between the main bodies 52 and 52. A protrusion 54 extending in the vertical direction is provided on the inner peripheral surface of the main body 52. The ridge 54 is fitted in a vertical groove 24 provided on the outer peripheral surface of the cylindrical portion 22 of the rotor 20 and having no locking hole 25. On the other hand, the leg portion 53 extends downward and fits into the vertical groove 24 having the locking hole 25, and the claw 55 provided on the inner surface of the lower end portion thereof fits into the locking hole 25. As a result, the knob 50 is fixed to the cylindrical portion 22 of the rotor 20 in the circumferential direction and is movable in the axial direction, and is further prevented from coming off by the claw 55.

Four boss portions 56 are provided inside the outer tubular portion 51 of the knob 50 at a distance from the outer tubular portion 51. The boss portion 56 projects downward from four positions in the circumferential direction and has an arc-shaped cross section so as to form a cylindrical body. Then, the boss portion 56 is pressed against the upper end surface of the stem 40 inserted into the cylindrical portion 22 of the rotor 20 in a state where the outer cylindrical portion 51 of the knob 50 is fitted onto the cylindrical portion 22 of the rotor 20. It has become. That is, the knob 50 is urged toward the surface side by the spring 80 together with the stem 40.

A translucent cap 57 is fitted on the upper end of the knob 50.

In this rotary switch, when the knob 50 is rotated in the circumferential direction, the rotation is transmitted to the rotor 20 via the outer cylindrical portion 51 of the knob 50 and the cylindrical portion 22 of the rotor 20, and the rotor 20 rotates. When the knob 50 is pushed down, the stem portion 40 of the knob 50 is pressed down, and the protrusion 43 of the stem 40 presses the key switch 60. When the key switch 60 is operated, the lamp 70 lights up. As a result, the translucent cap 57 fitted in the upper end portion of the knob 50 illuminates, and the operation of the key switch 60 is confirmed.

As described above, in the present rotary switch, the knob 50 for rotating the rotor 20 also has a function of pressing the key switch 60, so that the operation unit has a one-piece structure, and the structure of the operation unit is Is simplified. As a result, the manufacturing cost will be reduced due to the reduced number of parts. In addition, an open space is secured in the central portion of the knob 50, and it becomes easy to incorporate a light-emitting body such as the lamp 70 or LCD in the operation unit. Since a large knob has the same function without using a small key top, it is easy to provide a locking claw on the stem 40 or the like.

FIG. 5 is an exploded perspective view of a rotary switch according to another embodiment of the present invention.

The present rotary switch is a so-called jog switch that operates the knob 50 in one direction from the origin position. The rotary switch of the above-described embodiment mainly includes the configuration of the rotor 20 and the frame 30 and the spring for returning to the origin. The difference is that 80 is omitted.

The rotor 20 of the present rotary switch is equipped with a steel ball 27 urged to the surface side by a spring 26 on the surface of a disk-shaped main body. The steel balls 27 sequentially fit into a large number of small holes 33 provided around the round hole 31 of the frame 30 as the rotor 20 rotates, and give a so-called click feeling to the rotating operation of the knob 50.

The configuration of the other parts is substantially the same as that of the above-mentioned embodiment, and therefore the same parts are designated by the same reference numerals and the description thereof is omitted.

[0025]

[Effect of device]

 As described above, the rotary switch according to the present invention is a key switch dual-purpose type that can press the key switch, but the knob for rotating the rotor also has the function of pressing the key switch. Since the operation part has a one-piece structure, the structure of the operation part can be simplified. As a result, the manufacturing cost is reduced due to the reduction in the number of parts. In addition, an open space is secured in the center of the knob, which makes it easy to incorporate a light emitter such as a lamp or LCD in the operation unit. Since a large knob doubles the function without using a small key top, it is easy to provide a retaining hook.

[Brief description of drawings]

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

FIG. 2 is an exploded perspective view showing the rotary switch.

FIG. 3 is a vertical cross-sectional view and a bottom view of a knob used in the rotary switch.

FIG. 4 is a vertical cross-sectional view and a bottom view of a stem used in the rotary switch.

FIG. 5 is an exploded perspective view of a rotary switch according to another embodiment of the present invention.

[Explanation of symbols]

 10 Body 13 Substrate 20 Rotor 21 Brush 22 Cylindrical Part 23 Through Hole 30 Frame 40 Stem 50 Knob 51 Outer Cylinder 60 Key Switch 70 Lamp 80, 90 Spring

Claims (9)

[Scope of utility model registration request] 1. A body for holding a substrate having a switch pattern formed on a front surface thereof, and a brush rotatably incorporated in the body and attached to a back surface thereof to contact the switch pattern of the substrate and a front surface side of a central portion. A rotor having a cylindrical portion protruding from the inside and a through hole formed in the center including the inside of the cylindrical portion, and a rotor movably inserted into the through hole of the rotor in the axial direction, and the key switch is operated by the axial movement. Has a cylindrical stem, and an outer cylinder portion that protrudes to the back surface side and is fitted onto the cylindrical portion of the rotor, and the outer cylinder portion is fixed in the circumferential direction with respect to the cylindrical portion of the rotor and is in the axial direction. A rotary switch having a knob provided inside the outer tubular portion, and a boss portion that is movable in the axial direction to operate the stem in the axial direction according to the axial movement thereof. .. 2. The stem comprises a cylindrical main body and a leg portion extending below the main body, and a claw provided on the leg portion engages with the body or the rotor to prevent the stem from coming off. The rotary switch according to claim 1. 3. The rotary switch according to claim 1, wherein the stem is biased toward the front surface side by a spring, and the knob is biased toward the front surface side via the stem. 4. A vertical groove is provided on the outer surface of the cylindrical portion of the rotor, and a protrusion that fits into the vertical groove is provided on the inner surface of the outer cylindrical portion of the knob that is externally fitted to the cylindrical portion. The rotary switch according to claim 1, wherein: 5. A peripheral portion of an outer cylinder portion of the knob is a leg portion extending downward, and a claw provided on the leg portion is fitted in an opening portion provided in the vertical groove. The rotary switch according to claim 4, wherein the knob is retained. 6. The rotary switch according to claim 1, wherein the rotor is reciprocated in both directions from an origin position and elastically held at a midpoint position by a spring. 7. The rotary switch according to claim 1, wherein the rotor is reciprocally operated in one direction from an origin position. 8. A frame attached to a body for holding the rotor in the body is provided with a plurality of openings at intervals in a rotation direction of the rotor, and a steel ball mounted on the rotor is The rotary switch according to claim 7, wherein the rotary switch is fitted into the opening portion in order as the rotation of the rotary switch. 9. The rotary switch according to claim 1, wherein a light-emitting body operated by a key switch is arranged inside the stem, and a translucent cap is attached to the knob.