JPH0328600Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a display device that mechanically switches display.

[Conventional technology]

In a preset receiver that selects a preset frequency with a single touch of a push button, the display shown in FIG. Equipment may be used.

In Fig. 5, when push button 1 is pressed to drive switch 2, a light emitting diode (LED) 3 is turned on or off depending on the state of switch 2.
5 is a printed circuit board, and 5 is a front panel. However, this display device uses an electric circuit including the LED 3, making it expensive. On the other hand, FIG. 6 shows a mechanical display device, where 6 is a display plate that slides in the left-right direction, and 7 is a push button that slides in the front-back direction.
There are a pair of display parts 8a and 8b on the upper side of the display plate 6, and a triangular cam 9 is formed on the lower side. The display sections 8a and 8b are colored differently, and on the other hand, display the push button in the pressed position (visible through a window not shown). For this purpose, the oblique side of the cam 9 abuts against the protrusion 10 of the push button 7, causing the push button 7 to
It has a right triangular shape that can convert forward movement of the display board 6 into left or right movement.

[Problem that the invention attempts to solve]

However, the display device shown in FIG. 6 has a complicated structure and takes time and effort to manufacture and assemble. In addition, since the display board 6 slides laterally, there is a drawback that it is difficult to employ when the width of the tuner is limited. The present invention attempts to improve the above points by adopting a simple structure that rotates within the same plane.

[Means for solving problems]

The present invention provides a display device that mechanically switches the display in conjunction with a push button, which includes a front panel having a display window, a display part having a slope and having different first and second display colors on the surface, and a support part. , a display cam consisting of a hinge part that elastically connects the display part and the support part; and a display cam that works in conjunction with the push button to press the slope of the display part and rotate the display part with respect to the support part. and a contact portion that is moved, and when the push button is operated and the contact portion presses the slope of the display portion, the second display color is displayed from the display window, and the display of the contact portion is The supporting part is fixed to the front panel so that the first display color is displayed from the display window due to the elasticity of the hinge part when the slope of the part is released. It is something.

[Effect]

Since the display cam rotates within the same plane, it can be applied even if the width of the device is limited. Furthermore, since the display device consists of two parts, the display cam and the member for fixing it, the structure is simple and assembly is easy. Moreover, since everything is mechanical, it can be implemented at low cost. This will be explained in detail below with reference to illustrated embodiments.

〔Example〕

FIG. 1 is a configuration diagram showing an embodiment of the present invention, and 2
0 is the front panel, and 21A and 21B are its windows. 30 is a display cam, and 40 is a fixed shaft that supports the center thereof. The display cam 30 is made of a material such as polypropylene or nylon and is molded as shown in FIG. . The display section 31 (A and B are common) is shown in Figure b.
The front surface 34 is flat and the back surface 35 is flat as shown in the side view.
is sloped downward. This surface 34 is divided into upper and lower directions with different display colors X and Y (for example, one is the color of the material and the other is colored). 3
6 is a hole for fixing to the shaft 40. If the shape at the time of molding is as shown in FIG. 2c, the display parts 31A, 3
When 1B is rotated to the position a in the same figure, an elastic restoring force in the direction of the arrow is always exerted by the hinge parts 33A and 33B. In the states shown in a and c of the same figure, the display color X, which can be seen from the windows 21A and 21B of the front panel 20,
Y is different.

The present invention attempts to perform preset display using such a display cam 30. In Figure 1a, 50A and 50B are push buttons (70 described later)
This is a shaft that changes the protrusion length from the tuner main body 60 in conjunction with the tuner body 60, and its stroke is S as shown in c in the same figure. When the tip of this shaft 50 comes into contact with the inclined surface (back surface) 35 of the display section 31, the stroke S of the shaft 50
On the other hand, the display section 31 rotates within a range R shown in FIG. In other words, the inclined surface 35 converts the linear motion of the shaft 50 into rotational motion of the display section 31. Therefore, when the shaft 50 is moved backward, the display section 31 rotates downward due to the elasticity of the hinge section 33 to expose one display color X from the window 21. On the other hand, when the shaft 50 protrudes, the display section 31 rotates upward to display the other display color Y.
is exposed through the window 21.

FIG. 3 shows an example in which the present invention is applied to a push-button tuner for an auto radio, where 60 is a tuner and 70 is a push button.
This tuner has the function of selecting two stations with one button, the details of which are shown in FIG.

FIG. 4a is a plan view of a part related to one push button 70, and 71 is a tune shaft integrated with this;
72 is a return spring, and 73 is a driving gear for tuning. 50A, 50B are preset display shafts, 51A, 51B are driven gears that selectively mesh with the drive gear 73, 52A, 52B are return springs, 5
3A and 53B are holders. Holder 53B (5
3A has a symmetrical structure) has upper protrusions c and d at the front and rear, and a lower protrusion e at the rear, as shown in figure d. Upper protrusions c and d are tune shafts 71
It collides with sides a and b of a cam 74 attached to the cam 74.
FIG. 4b is a diagram showing this cam 74 alone, and 75
is a rotating shaft, 76 is an elongated hole for defining a rotation range, and 77 is one end of a bias spring 78 (the other end is a tuning shaft 71).
This is the pin that fixes the side). 79 is the tune axis 7
The pin on the first side engages with the elongated hole 76 to define the range of rotation (swing) of the cam 74. 81 is a front plate on the housing side, 82 is a rear plate, and 83 is a shaft fixing plate. This shaft fixing plate 83 has two claws f as shown in FIG. 4c, and is normally biased to the left by a spring force.

Explain the operation. When push button 70 is pushed in the state shown in FIG. 4a, part a of cam 74 and part c of holder 53A are pressed.
Since the parts abut each other, the shaft 50A moves backward, and the e part of the holder 53A engages with the f part of the shaft fixing plate 83, resulting in a locked state. When the pressing force on the push button 70 is released in this state, the shaft 71 is returned by the force of the spring 72, and the b part of the cam 74 collides with the d part of the holder 53A, rotating toward the holder 53B, and the gear 73
meshes with gear 51A. Therefore, in this case, tuning on the shaft 50A side can be performed by rotating the push button 70. At this time, the protruding length of the shaft 50A decreases, so that, as explained with reference to FIG. 1, the display section 31A makes the display color X face the window 21A.

When the push button 70 is pushed again from this state, the cam 7
4 is leaning toward the holder 53B, so the shaft 50B
is pushed in, and part e of the holder 53B is attached to the shaft fixing plate 83.
It engages with the f section on the right side. At this time, while the plate 83 moves to the right, the engagement between the e section of the holder 53A and the f section on the left side is disengaged, and the shaft 50A returns to its original position by the force of the spring 52A. Therefore, since the protruding length of the shaft 50A increases, the display section 31A (FIG. 1) rotates clockwise, so that the displayed color Y faces the window 21A. Instead, axis 50B
Since the protrusion length of the display section 31B decreases, the display color X of the display section 31B is made to face the window 21B. In this way, the display between the preset state and the normal state is automatically switched.

[Effect of idea]

As described above, according to the present invention, the preset state and the normal state can be distinguished and displayed without using any electrical parts, so it can be implemented at low cost, and since the direction of rotation is within a plane, It can be applied to narrow width sets, and furthermore, the structure is simple, so it has the advantage of being easy to manufacture, assemble, etc.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram showing one embodiment of the present invention;
The figure is a block diagram of a single display cam, Figure 3 is a block diagram showing an example of application to a push-button preset receiver, Figure 4 is a block diagram showing its details, and Figures 5 and 6 are conventional presets. FIG. 3 is a configuration diagram showing different examples of display devices. In the figure, 20 is the front panel, 21A, 21B are windows thereof, 30 is a display cam, 31A, 31B are display parts, 32 is a central support part, 33A, 33B are hinge parts, 40 is a support shaft, 50A, 50B are display axis,
60 is the tuner body, 70 is a push button, and X and Y are different display colors.

Claims (1)

[Claims for Utility Model Registration] A display device that mechanically switches display in conjunction with a push button, comprising: a front panel having a display window; a display portion having a slope and having different first and second display colors on the surface; , a display cam including a support section and a hinge section that elastically connects the display section and the support section; and a display cam that presses the slope of the display section in conjunction with the push button to move the display section to the support section. and a contact part that rotates against the contact part, and when the push button is operated and the contact part presses the slope of the display part, the second display color is displayed from the display window, and the second display color is displayed from the display window. The support part is fixed to the front panel so that the first display color is displayed from the display window due to the elasticity of the hinge part when the slope of the display part of the part is released. A display device characterized by: