JPS59114278A - Touch switch for elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Regarding elevator touch switches.

[Technical background of the invention and its problems]

1 and 2 are a front view and a sectional view showing an example of a touch switch conventionally used for an elevator car call button, hall call button, etc. In the figure, a screw 2 is attached to a surface plate 1. Attach a button 3 made of a light-transmitting insulator such as acrylic. There is a cylindrical partition 4 on the back side of the button 3 to prevent light leakage, a metal touch plate 5 made of a rectangular flat plate at the center of the front surface that can be touched by fingers, and a screw 6 welded to the touch plate 5 and a nut 7. Attach the helical spring 8.

Further, a touch switch 10 equipped with a contact detection circuit is attached to the touch switch mounting plate 9, so that the pattern IIA of the printed wiring board 11 provided on the top of the touch switch 10 and the tip of the spring 8 are in electrical contact with each other. It has become.

That is, the touch plate 5 and the touch switch 10 are electrically connected via the spring 8. This is because when removing the surface plate 1 for inspection of the lamp 12 or the touch switch 10, the work will be hindered if the surface plate 1 is connected with an electric wire or the like.

Thus, when a passenger touches the touch plate 5 inside the elevator car or at the elevator hall landing, the signal is given to the touch switch 10.

As a result, the contact detection circuit provided in the touch switch 10 operates to register a call, and at the same time, the lamp 12 provided in the touch switch 10 lights up. Since the light illuminates the button 3, the area around the touch plate 5 becomes bright, and a response is displayed to the passenger.

However, the touch plate 5 is generally made of an aluminum plate or the like with letters or figures 5A printed on it, and has no light transmittance, so when the button 3 is irradiated with the lamp 12, the touch plate 5 appears as shown in the first drawing. Only the area around the button 5 becomes brighter, and the contrast between the touch plate 5 and the button 3 becomes stronger, so from a human visual perspective,
A problem has arisen in which the characters or graphics 5A become difficult to see.

In particular, the touch switch 10 is often used in high-end elevators, and of course, due consideration is given to the car design and lighting, and in many cases the car's brightness and illuminance are dimmed (low) to create a calm atmosphere. . In such a case, the contrast between the brightness of the button 3 and the touch plate 5 will be further emphasized, and for example, in the case of a car operation panel, it will be difficult to read which floor call is registered, and it will be difficult to read the floor letters. The reality is that you can't see it unless you get close to it.

Currently, no special measures have been taken to address these problems.

[Purpose of the invention]

The present invention has been made in consideration of the above points, and its purpose is to prevent the letters and figures on the touch plate from becoming difficult to see even when a passenger touches the touch switch of an elevator and the lamp lights up. It is to provide a touch switch like that.

[Summary of the invention]

The present invention enables destination registration, car calling, etc. when using an elevator.
In a touch switch that detects a change in the operating touch switch's status and lights up a registration light to display it visually, a button made of a light-transmitting insulating material provided around the front part, and a button in the center of the button. a light-transmissive tree that engages the portion;
A touch element is made of oil and has a metal vapor deposited layer formed on its surface, which is used as a conductor to guide a touch signal to a touch detection circuit, and a lamp provided on the back of the touch element that lights up in response to a touch signal. and is configured such that when the lamp is turned on, light is transmitted from behind the metal vapor deposited layer on the surface of the touch element.

[Example of the present invention]

An embodiment of the touch switch according to the present invention will be described below with reference to the drawings.

FIGS. 3 and 4 show a front view and a sectional view of a touch switch according to the present invention, in which a predetermined number of square holes are provided in a surface plate, and the touch switch has a convex shape with a square hole in the center thereof. A7
,7. Attach the button 3 made of an insulating material with a light opaque property to the materials T and I.

A cylindrical partition 4 is attached to the back side (inside) of this button 3 to prevent light leakage.

Then, in the central space, a touch element 13 made of resin such as polyester, which has light transmittance and is relatively heat resistant, is fitted in a tubular shape with a stepped rectangular outer shape and a concave space on the back surface. .

On the external surface (bold line indicated area) or the entire surface of the touch panel 13, a metal such as gold or indium tin oxide is deposited very thinly to form a metal deposited layer 13A. The surface is deposited to the extent that it is optically transparent.

Thus, the protrusion of the metal vapor deposited layer 13A of the touch element 13 is inserted into the central square hole of the button 3, so that the metal vapor deposited layer 13A is visible from the front.

On the other hand, a touch switch 10 equipped with a contact detection circuit is mounted on the touch switch mounting plate 9, and a pattern IIA of a printed wiring board 11 forming a part of the touch switch 10 is shown above.
Place.

This pattern IIA and the lower tip of the touch element 13 are configured to be in mechanical and electrical contact. Note that a conductive paste 4 containing silver or the like may be applied to this contact portion.

Further, a dial plate L is provided at the upper part of the inner cylinder of the touch element 13.

The perspective view of the button 3 in FIG. 51 showing the above relationship in detail, the touch element 13 fitted from the back side of the button 3 shown in FIG. 6, the opaque characters or figures 14A as shown in FIG. It is constructed as shown in Fig. 4 by combining a rectangular shape like a dial plate with transparent parts around the periphery.

Although one unit of the touch switch of the present invention has been described above, in the case of an elevator car operation panel, the touch switches are arranged side by side only on predetermined service floors. Therefore, if this is a hall call button, one or two buttons are provided for -L up and F down calls.

In the configuration to the north, the operation will be explained next.

Now, when a passenger touches the table 1fij13A of the touch element 13, the number (5) is applied to the contact detection circuit of the touch switch 1o, which registers the call for the elevator and lights up the lamp 12. is configured to detect the electrostatic capacitance change between the touch element surface 13A and the ground potential due to human body contact, or the induced voltage, and the current flowing from the contact force to the touch switch. is extremely small.Therefore, its electrical circuit does not require a large conductor cross-sectional area.

It has a slight difference.

That is, the passenger touches the touch element 134 and input is input into the circuit. When the touch switch 10 is operated, the lamp 12 is turned on.

Note that a special conductive medium such as a conductive paste may be used at the contact portion between the vapor deposition surface and the pattern to ensure complete electrical continuity.

In addition, the surface electrical resistance of the metal evaporated surface depends on the metal material and the evaporation density, but for use in this touch switch (several ohms to
A resistance of several hundred Ω) is sufficient.

Now, when the lamp is lit, the light is lit. If the surface resistance is about the same as above, a light transmittance of about 40 to 80% can be obtained.

If the lamp is an incandescent type, its luminous intensity is high, so there is almost no problem with the amount of light transmitted.

In the case of touch switches for elevators, even if the light transmittance decreases, the ones with lower resistance (Table 1) are more electrically stable, so better results can be obtained.

As described above, in the present invention, the light from the lamp passes through the letter board transparent part IB and the touch element surface part 13A, so when the characters or figures are lit,
See clearly and effectively.

Therefore, there is no longer a problem that the characters or figures drawn on the metal touch plate table m1 become invisible due to the contrast when the lamp is lit.

[Other Embodiments of the Invention 1] (1) The embodiment shows a method of vapor-depositing metal on the surface of the touch element, but as a modified example, the metal is not vapor-deposited on the touch element (2. The thick line part in Figure 2 is It is also possible to cover the conductive film with another conductive film and treat the conductive surface of the conductive film according to the example.The conductive film may be coated with a metal vapor deposited on the surface of a polyester film, etc., which has the same properties as the metal vapor deposited in the example. Therefore, if the surface of the touch element is covered by thermal processing, the same results as in the example can be obtained.

(2) In the embodiment, a conductive paste is used for the contact portion between the vapor deposited portion of the touch element and the printed wiring board, but instead, a conductive rubber plate may be sandwiched between the contact portion to provide electrical continuity. This makes the conductivity and elasticity of the rubber effective and provides appropriate electrical and mechanical contact.

(3) Button 3, touch element 13, dial 1
In addition to being colorless and transparent, 4 can also be colored, and it is also possible to increase the coloring effect when the touch button is turned on. Also, characters or figures may be drawn directly on the touch element.

(4) The lamp 24 can of course be replaced with an incandescent lamp, a light emitting diode, a neon lamp, or other light emitting lamp.

As explained above, according to the present invention, when a call is registered, the light that lights up at 4 passes through the dial, and when a passenger touches it, 7
+ Because it transmits through contact surfaces, it can be used in low-level elevator car rooms or halls, and is useful for deciphering letters or figures on buttons that are caused by excessive contrast when lit.
The problem #G is resolved.

This is not only very effective in terms of functionality, but also offers potential for application and development in the button design.

In addition, the spring etc. can be reduced to /ζ゛, and many remarkable effects can be obtained, such as being advantageous in terms of performance and cost.

[Brief explanation of drawings]

Figure 1 is a front view of a conventional touch switch, and Figure 2 is a front view of a conventional touch switch.
11-■ sectional view in the figure, FIG. 3 is a front view of the touch switch of the present invention, the fourth factor is a sectional view taken along IV-IV in FIG. 3, FIG. 5 is a perspective view of the button in FIG. This figure is a perspective view of the tap element shown in FIG. 4, and FIG. 7 is a perspective view of the dial plate shown in FIG. 4. 3...Button, 12...Lamp, 13
...Touch element, 13A...Metal deposition layer.

Claims (1)

[Claims] When using a touch switch for operations such as destination registration or car call when using an elevator, when the touch switch is touched, a change in the status is detected and the registration light is turned on to visually display the touch switch. A button made of an insulating material, a touch element made of a light-transmitting resin that engages the center part of the button, and a metal vapor deposited layer formed on the surface, which serves as a conductor to guide a touch signal to a touch detection circuit. , a lamp provided on the back of the touch element that lights up in response to a contact signal is provided, and when the lamp is lit, light is transmitted from behind the metal vapor deposited layer on the surface of the touch element. Features elevator touch switches.