JPH1064372A - Operation device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an operating device for raising and lowering the frequency of a radio receiver using a knob operated by a finger, comprising an up (slow), up (fast), down (slow), down ( It is an object of the present invention to provide an operating device that achieves the four modes (first) by three tact switches and a single operating knob. According to a rotation direction of an operation knob (20), a first operation is performed.
The pressing portions 55 and 56 of the lever 21 selectively press the addition switch 23 or the subtraction switch 24, and when the operation knob 20 is rotated by a predetermined angle or more, the tip of the second lever 22 64 presses the mode switch 25 to perform the fast operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating device, and more particularly, to an operating device in which an operating knob is rotated by a finger.

[0002]

2. Description of the Related Art For example, as a tuning display device of a radio receiver, a display device in which a tuning frequency is directly digitally displayed by a number is used instead of a display device using a dial pointer. When tuning is performed by a tuning device having such a display device, when the addition switch is pressed, the tuning frequency increases slowly. On the other hand, when the subtraction switch is pressed, the tuning frequency is slowly reduced.

[0003] When the tuning frequency is significantly changed, such a normal operation requires time. Therefore, a fast-forward addition switch and a fast-forward subtraction switch are further added so that the tuning frequency is rapidly increased when the fast-forward addition switch is pressed, and the tuning frequency is rapidly reduced when the fast-forward subtraction switch is pressed. A tuning device is used.

According to such a tuning apparatus, four operation buttons for performing four operations and four electric switches corresponding to these operation buttons are required. In addition, the above four switches are connected to the four ports of the microcomputer of the tuning device, respectively, so that the four ports of the microcomputer are occupied.

[0005]

In order to reduce the number of such switches, a high-speed feed switch is provided in addition to the addition switch and the subtraction switch. And the tuning frequency is increased, and when only the subtraction switch is pressed, the tuning frequency is slowly reduced. On the other hand, when the addition switch and the fast-forward switch are pressed, the tuning frequency is added at a high speed. When the subtraction switch and the fast-forward switch are pressed, the tuning frequency is reduced at a high speed. I am trying to.

A disadvantage of the operating device in such a tuning display device is that when the tuning frequency is increased or decreased by fast-forwarding, it is necessary to keep pressing two buttons at the same time, so that the operability is poor. There's a problem.

The present invention has been made in view of such a problem, and performs an addition operation at a slow speed, a subtraction operation, a high-speed addition operation, and a subtraction operation by only one-handed operation. It is an object of the present invention to provide an operating device that enables such operations and achieves such an operation with three switches.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided an operation knob adapted to be rotated by a finger, and when the operation knob is rotated, the operation knob is rotated in a forward direction or a reverse direction according to the direction of rotation. A first lever, a second lever that rotates in one direction when the operation knob is rotated in a forward direction or a reverse direction by a predetermined angle or more, and a pressing lever when the first lever is rotated in the forward direction. And a mode switch that is pressed when the first lever is turned in the opposite direction, and a mode switch that is pressed when the second lever is turned. It is.

The first lever has a fulcrum pin and an engaged portion on opposite sides of the rotation center of the operation knob, and the engaged portion is engaged with the engagement portion of the operation knob. In addition, a pair of pressing portions may be provided so as to protrude on opposite sides of the fulcrum pin, and the pair of pressing portions may respectively press the addition switch and the subtraction switch.

The pressed portion of the second lever is pressed by the pressing portion of the operation knob when the operation knob is rotated by a predetermined angle or more in the forward or reverse direction. The second lever may rotate to press the mode switch.

[0011] The operation knob may be biased to a neutral position with respect to rotation in the forward and reverse directions by a return spring wound around a bearing of the operation knob.

When the addition switch is pressed, the tuning frequency is increased, when the subtraction switch is pressed, the tuning frequency is reduced, and when the mode switch is pressed, the increase or decrease operation is performed quickly.

[0013]

1 and 2 show a radio receiver provided with an operating device according to an embodiment of the present invention. This radio receiver has a housing composed of a front cabinet 11 and a rear cabinet 12, which are joined together to form a flat rectangular parallelepiped housing. On the front side of the front cabinet 11 and on the left side thereof, there are formed sound holes 13 composed of countless small holes. On the right side of the area where the sound holes 13 are provided, a horizontally long display section 14 is formed, and the display section 14 displays the tuning frequency. Further, push buttons 15, 16, 17 are arranged below the display unit 14. The particularly small push button 17 is constituted by a clock button.

A tuning device for performing tuning display on the display unit 14 includes an operation knob 20. As shown in FIG. 3, the tuning device having the operation knob 20 includes a first lever 21, a second lever 22, an addition switch 23, a subtraction switch 24, and a mode switch 25. The addition switch 23, the subtraction switch 24, and the mode switch 25 are mounted on a circuit board 26 (see FIGS. 7 and 8).

A cylindrical bearing 30 as shown in FIG. 3 is continuously provided on the side wall 29 of the cabinet 11 which is a molded body of an ABS resin, an AS resin or the like. Such a cylindrical bearing 3
A laterally long opening 31 is formed in the side wall 29 on the base side of 0.

On the other hand, the operation knob 20 rotatably supported by the cylindrical bearing 30 on the side wall 29 is formed of a synthetic resin, and has a shaft portion 34 formed of a cylindrical body at the center thereof.
5 and 6, such a shaft portion 34 is inserted into the cylindrical bearing 30 of the side wall 29 and rotatably supported. A locking claw 35 is integrally connected to the shaft portion 34 of the operation knob 20, and such a locking claw 35 is engaged with an edge portion of the cylindrical bearing 30.

As shown in FIGS. 3 and 5, the operating knob 20 is provided with an engaging portion 36 formed of a protruding portion, and the protruding portion 36 causes the first lever 21 to rotate. . On the lower end side of the operation knob 20, a pressing portion 37 formed of another pin-shaped protrusion is formed, and the second lever 22 is rotated by such a pressing portion 37.

FIG. 3 shows the outer periphery of the cylindrical bearing 30 on the side wall 29.
And a return spring 40 is attached as shown in FIG. This return spring 40 is wound around the outer periphery of the cylindrical bearing 30 a plurality of times, and is formed of locking pieces 41 and 42 whose both ends are bent in an L-shape. As shown in FIG.
The locking rib 43 on the side and the locking rib 44 on the cabinet 11 side are locked. On the other hand, the locking piece 42 on the opposite side is provided with the locking rib 45 on the knob 20 side and the cabinet 1.
The locking rib 46 is locked to the locking rib 46 on one side.

Next, the first lever 21 will be described. The first lever 21 is made of an elastic synthetic resin, for example, polyoxymethylene, and has a fulcrum pin 50 which is formed on the cabinet 11. Are held by a pair of holding members 51 (see FIG. 6). An oval engaged portion 52 is continuously provided on the upper end side of the first lever 21.
2, the engaging portion 36 of the operation knob 20 is received. Further, the first lever 21 has U-shaped bent portions 53 and 54 on both sides of the fulcrum pin 50, and pressing portions 55 and 56 are respectively provided at the distal ends of these bent portions 53 and 54. . These pressing parts 5
5 and 56 are the addition switch 23 and the subtraction switch 2 respectively.
4 is pressed.

Next, the second lever 22 will be described. The second lever 22 is made of a synthetic resin such as an AS resin or an ABS resin, and is connected to a pair of push buttons 61 and 62 via a connecting portion 60. The connection portion 60 is attached to the inside of the cabinet 11. The second lever 22 has a pressed portion 63 which is bent in a U-shape as shown in FIG. The pressed portion 63 is operated by the operation knob 2.
When 0 is largely rotated in the forward or reverse direction, it is pressed by the pressing portion 37 formed of the pin-shaped protrusion, and is thereby deformed. The tip portion 64 of the second lever 22 presses the mode switch 25 due to the deformation of the second lever 22.

As described above, the operating device according to the present embodiment includes the locking claw 3 of the shaft portion 34 formed of the cylinder of the operating knob 20.
5 is locked to the edge of the cylindrical bearing 30 on the side wall 29 of the cabinet 11 as shown in FIG. 6, so that the operation knob 20 is rotatably supported about the axis of the cylindrical bearing 30. I have.

The first lever 21 has its fulcrum pin 50
6 and 7 by a presser 51 provided integrally with the cabinet 11,
Thus, the first lever 21 is rotatably supported about the axis of the fulcrum pin 50.

On the other hand, the second lever 22 is fixed between the front cabinet 11 and the circuit board 26 with the connecting portion 60 being interposed therebetween. And the circuit board 26
An addition switch 23, a subtraction switch 24, and a mode switch 25 are respectively mounted on the top. As shown in FIG. 4, the operation knob 20 is urged by a return spring 40 wound on the cylindrical bearing 30 so as to return to the neutral position.

Next, the operation of such an operating device will be described. First, when lowering the frequency, as shown in FIG. 7, the operation knob 20 is rotated to the left around the axis of the cylindrical bearing 30, ie, counterclockwise. Then, the engaging portion 36 connected to the operation knob 20 moves leftward, and presses the engaged portion 52 of the first lever 21 leftward.
Thereby, the first lever 21 is rotated counterclockwise about the fulcrum pin 50. Then, the first lever 21
The pressing portion 56 connected to the right side of the fulcrum pin 50 via the U-shaped bent portion 54 presses the right subtraction switch 24, thereby lowering the tuning frequency of the display unit 14. .

When the operation knob 20 is further rotated in the counterclockwise direction, the pressing portion 37 formed of a pin-shaped projection connected to the operation knob 20 is rotated counterclockwise as shown in FIG. The right portion of the pressed portion 63 of the second lever 22 is pushed up. For this purpose, the second lever 2
2 deforms around the connecting portion 60, and the tip portion 64 presses the mode switch 25.

At this time, the operation knob 20 is in a state where the subtraction switch 24 is pressed through the pressing portion 56 of the first lever 21. That is, both the subtraction switch 24 and the mode switch 25 are simultaneously pressed. Accordingly, the subtraction operation is performed at high speed, and the display unit 1
The speed at which the tuning frequency of No. 4 decreases is increased.

On the other hand, when it is desired to increase the frequency of the display unit 14, the operation knob 20 shown in FIG. 7 is rotated clockwise. Then, the engaging portion 36 formed of the projecting portion of the operation knob 20 presses the engaged portion 52 of the first lever 21 to the right, thereby rotating the first lever 21 clockwise about the fulcrum pin 50. Let it. Therefore, the pressing portion 55 of the first lever 21 presses the addition switch 23 on the left side, whereby the tuning frequency displayed by the display unit 14 is added.

When the operation knob 20 is further rotated to the right by a large amount, the pressing portion 37 provided on the operation knob 20 is rotated.
8 rotates in the opposite direction to the direction shown in FIG. 8, that is, in the clockwise direction, thereby pressing the left portion of the pressed portion 63 of the second lever 22. It turns clockwise. Therefore, also in this case, the tip portion 64 of the second lever 22 presses the mode switch 25. That is, in this case, the addition switch 23 and the mode switch 25 are pressed, and the tuning frequency of the display unit 14 is increased at a high speed.

A first portion provided on both sides with pressing portions 55 and 56 for selectively pressing the addition switch 23 and the subtraction switch 24.
The lever 21 has U-shaped bent portions 53 and 54 formed at the bases of the pressing portions 55 and 56, respectively. The U-shaped bent portions 53 and 54 deform the first operation. This prevents overload on the addition switch 23 or the subtraction switch 24. Therefore switch 2
The 3, 24 is prevented from being damaged by being strongly pressed.

A return spring 40 as shown in FIG. 4 is wound around the outer periphery of the cylindrical bearing 30 which rotatably supports the shaft portion 34 of the operation knob 20. The L-shaped locking pieces 41 and 42 on both sides of the return spring 40 are locked by locking ribs 43 and 44 and 45 and 46, respectively.

Now, when the operation knob 20 is rotated clockwise in FIG. 4, the locking ribs 43 and 45 integrated with the knob 20 move clockwise, respectively. Thereby, the second locking piece 42 of the spring 40
Is moved clockwise. On the other hand, the first locking piece 4
1 is controlled by the ribs 44 on the cabinet 11 side, so that the return spring 40 includes a pair of locking pieces 41,
It is crushed and elastically deformed so that the distance between 42 becomes short. Therefore, when the operation knob 20 is released, the knob 20 is rotated in a direction opposite to the clockwise direction indicated by the arrow, that is, counterclockwise, to return to the original state.

When the operating knob 20 is rotated in the direction opposite to the arrow in FIG. 4, that is, counterclockwise, the locking ribs 43 and 45 are moved in the same direction. Then, the first locking piece 41 is moved clockwise by the movement of the locking rib 43. On the other hand, since the second locking piece 42 remains at that position by the rib 46 on the cabinet side, the return spring 40 is also deformed in the narrowing direction in this case as well. And such a spring 4
With the elastic restoring force of 0, when the hand is released from the knob 20, it is rotated clockwise and returned to the neutral position.

As described above, the operating device according to the present embodiment operates in a mode in which the tuning frequency is slowly increased, a mode in which the tuning frequency is slowly reduced, and a mode in which the tuning frequency is rapidly increased by operating the finger of the knob 20 alone. In this mode, four modes, ie, a mode in which the tuning frequency is reduced and a mode in which the tuning frequency is rapidly reduced, are achieved. In addition, the switch incorporated therein is made up of three switches 23, 24 and 25, as is apparent from FIGS.

Thus, the three switches 23, 24, 2
By performing the four modes by 5, it is possible to reduce the cost of the tuning device, and to effectively use the switch port of the microcomputer incorporated in the tuning device. In addition, there is no need to perform double pressing, and operability is improved. Further, since the mode is set to the fast mode only by increasing the rotation angle of the operation knob 20, the effect is large when switching is frequently used.

The operating device according to the present embodiment is applied not only to the tuning frequency displayed on the display unit 14, but also to the time display up and down operations. This operation is performed by turning off the power switch of the radio receiver and performing the same operation as the above-mentioned operation of the tuning frequency by operating the operation knob 20 with the clock button 17 provided on the front cabinet 11 being operated. Is to be achieved by

Therefore, when the power switch is turned off and the clock button 17 is operated, the operation knob 2
When 0 is rotated to the left, the time display is subtracted, and when it is rotated large, the speed increases. When the operation knob 20 is rotated to the right, the display of the time is slowly increased. When the rotation is further increased, the time display is added at a high speed.

[0037]

As described above, according to the present invention, there is provided an operation knob which is rotated by a finger, and which is rotated in the forward or reverse direction according to the rotation direction when the operation knob is rotated. A second lever which rotates in one direction when the operating lever is rotated in a forward or reverse direction by a predetermined angle or more.
, An addition switch that is pressed when the first lever is turned in the forward direction, a subtraction switch that is pressed when the first lever is turned in the reverse direction, and a second lever that is turned. And a mode switch to be pressed.

Therefore, when the operation knob is rotated in the forward or reverse direction, the addition switch or the subtraction switch is pressed by the first lever, and when the operation knob is rotated by a predetermined angle or more, the mode is switched via the second lever. When the switch is pressed, the mode of the addition operation or the subtraction operation is changed.

The first lever has a fulcrum pin and an engaged portion on opposite sides of the rotation center of the operation knob, and the engaged portion is engaged with the engagement portion of the operation knob. According to a configuration having a pair of pressing portions so as to protrude from the opposite side portions with respect to each other, and the pair of pressing portions respectively press the addition switch and the subtraction switch, the rotation of the operation knob The addition switch and the subtraction switch can be selectively pressed via the first lever in accordance with the direction.

The pressed portion of the second lever is pressed by the pressing portion of the operation knob when the operation knob is rotated by a predetermined angle in the forward or reverse direction,
According to the configuration in which the second lever rotates to press the mode switch, the mode switch is pressed by the second lever when the operation knob is rotated by a predetermined angle or more. .

According to the configuration in which the operation knob is biased to the neutral position with respect to the forward and reverse rotations by the return spring wound around the bearing of the operation knob, in the forward or reverse direction. The rotated operation knob is returned to the neutral position by the return spring.

According to the configuration, when the addition switch is pressed, the tuning frequency is increased, when the subtraction switch is pressed, the tuning frequency is reduced, and when the mode switch is pressed, the increase or decrease operation is performed quickly. Only by the rotation operation of the single operation knob, slow addition and subtraction of the tuning frequency and addition and subtraction of the fast-forward are performed by three switches.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a radio receiver including an operation device according to an embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is an exploded perspective view of the main part.

FIG. 4 is a front sectional view showing a returning operation of an operation knob by a return spring.

FIG. 5 is a longitudinal sectional view showing an operation knob and a mechanism related to the operation knob.

FIG. 6 is a bottom view of the same.

FIG. 7 is a front view of a state in which the operation knob is omitted.

FIG. 8 is a front view showing the second lever in a state where the operation knob is omitted.

[Explanation of symbols]

11 ‥‥ front cabinet, 12 ‥‥ rear cabinet, 13 ‥‥ sound holes (countless small holes), 14 ‥‥ display,
15, 16 ‥‥ push button, 17 ‥‥ push button (clock button), 2
0 ‥‥ operation knob, 21 ‥‥ first lever, 22 ‥‥ second lever, 23 ‥‥ addition switch, 24 ‥‥ subtraction switch, 25 ‥‥ mode switch, 26 ‥‥ circuit board, 2 ‥‥
9 ‥‥ side wall, 30 ‥‥ cylindrical bearing, 31 ‥‥ horizontal opening, 3
4 ° shaft (cylindrical body), 35 ° locking claw, 36 ° engaging part (projecting part), 37 ° pressing part (pin-shaped projecting part), 40 °
Return spring, 41, 42 ‥‥ locking piece, 42 ‥‥ locking rib (knob side), 43 ‥‥ locking rib (cabinet side), 44 ‥‥ locking rib (knob side), 45 ‥ {Locking rib (cabinet side), 50} Support pin, 51}
{Presser, 52} Engaged part, 53, 54 U-shaped bent part, 55, 56} Pressing part, 60 ° Connecting part, 61, 6
2 ‥‥ push button, 63 ‥‥ pressed part, 64 ‥‥ tip

Claims (5)

[Claims] An operation knob that is rotated by a finger; a first lever that is rotated in a forward or reverse direction according to a rotation direction of the operation knob when the operation knob is rotated; A second lever that rotates in one direction when the knob is rotated in a forward or reverse direction by a predetermined angle or more; an addition switch that is pressed when the first lever is rotated in the forward direction; An operation device comprising: a subtraction switch that is pressed when the lever is rotated in the opposite direction; and a mode switch that is pressed when the second lever is rotated. 2. The first lever has a fulcrum pin and an engaged portion on opposite sides of a rotation center of the operating knob, and the engaged portion is engaged with an engaging portion of the operating knob. And a pair of pressing portions so as to protrude on opposite sides of the fulcrum pin, and the pair of pressing portions press the addition switch and the subtraction switch, respectively. The operating device according to claim 1. 3. The pressed portion of the second lever is pressed by the pressing portion of the operation knob when the operation knob is rotated by a predetermined angle in a forward or reverse direction. The operating device according to claim 1, wherein the second lever pivots to press the mode switch. 4. The operation knob according to claim 1, wherein a return spring wound around a bearing of the operation knob biases the operation knob to a neutral position with respect to forward and reverse rotation. Operating device. 5. The tuning frequency is increased when the addition switch is pressed, the tuning frequency is reduced when the subtraction switch is pressed, and the increase or decrease operation is performed earlier when the mode switch is pressed. The operating device according to claim 1, wherein: