JPH0533420U - Instrument keytop - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a key top for an instrument that is easy to assemble and has good visibility, and can handle the basic type at low cost even when there are many variations. [Structure] An instrument key top for use in an instrument in which an illumination key top portion 20 and a reflective key top portion 30 are simultaneously used on the instrument operation surface, and a plurality of keys made of a translucent material.
The top, the trunk gate portion 25 supplied with this translucent material at the time of molding, and the branch gate portion 26 for connecting the trunk gate portion and each key top in a state where they are arranged on the instrument operation surface. An illumination key top portion having a plurality of keys, a plurality of key tops made of a light-shielding material amount, a trunk gate portion 35 supplied with this translucent material at the time of molding, this trunk gate portion and each key. A reflective key top portion having a branch gate portion 36 connecting the top to be placed on the instrument operation surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an instrument keytop suitable for use in an industrial instrument such as an indicating controller, and more particularly to an improvement in a structure that is easy to assemble.

[0002]

[Prior Art]

 The applicant of the present invention has proposed an instrument front structure in, for example, Japanese Utility Model Publication No. 56-17510. Such an instrument has a bar graph for displaying signals and an operation key for inputting set values. The operation key may be a mixture of an illumination key in which a light emitting element is arranged on the back side of the instrument and a reflective key made of a light-shielding material.

In the case of manufacturing such a key top, it may be considered that the keys are manufactured one by one in a discrete manner, but the die cost (initial cost) for manufacturing the key becomes high and the assembling property is high. There is a problem that it will get worse. For example, in the case of two-color molding, the number of molds is eight, and in the case of silk printing or tampo printing on a key that is not transparent, the number of molds is five. Therefore, the next method is to connect the illumination key and the reflection key with a plastic called a gate, and then use a laser to skip the painting to create letters.

[0004]

[Problems to be solved by the device]

 In this case, since the number of molds is one, the initial cost is low, and it is sufficient to prepare only the laser mask separately for the variation key top. However, since the key top material is used for illumination, there is a problem that the visibility of the reflective key is reduced. The present invention solves such a problem, and an object thereof is to provide an instrument key top which is easy to assemble and has good visibility, and which can cope with not only the basic type but also many variations at low cost. ..

[0005]

Means for Solving the Problems The present invention which achieves such an object is a key for an instrument used in an instrument in which an illumination key top portion 20 and a reflective key top portion 30 are simultaneously used on an instrument operation surface. At the top, it has the following structure. That is, a plurality of key tops made of a translucent material, a trunk gate portion 25 provided with this translucent material at the time of molding, and the trunk gate portion and each key top are connected to the instrument operation surface. The illumination key top portion having the branch gate portion 26 connected to be arranged in a state of being arranged with a plurality of key tops having the amount of the light shielding material, and the light transmitting material were supplied at the time of molding. The trunk gate section 35 and the reflection type key top section having the branch gate section 36 connecting the trunk gate section and each key top in a state where they are arranged on the instrument operation surface. It has. The key feature is that characters are created on this keytop depending on whether the instrument is the basic type or the variation.

[0006]

[Action]

 In the key top for illumination, each key top used for illumination is connected to the trunk gate through the branch gate so that the whole can be integrally molded and attached to the instrument. ing. Similarly for the reflective key top part, each key top used for reflection is connected to the trunk gate part via the branch gate part so that the whole can be integrally molded and can be integrally mounted on the instrument. ing. Characters are printed separately and can be used for general purposes.

[0007]

【Example】

 The present invention will be described below with reference to the drawings. FIG. 1 is a front view of an instrument used in the present invention. In the figure, the display unit 11 is configured by using an LCD and displays characters, numbers, symbols and the like necessary for the indicating controller. The bar graph 12 is of a vertical type, and the set value SV is displayed by an arrow and the measured value PV is displayed by the height of the bar. The bar graph 13 is a horizontal type, and the manipulated variable MV is displayed, and the letters "C" and "O" indicating the open / closed state of the control valve are provided on both sides. The illumination key top section 20 is used to display the operation mode of the controller, and the set value is "C" for automatic operation when the external device is cascading to set the set value. Operate the setting key on the front of the instrument to set it to “A” for automatic operation or “M” for manual operation. The reflective key top section 30 is used to operate the display of the adjustment meter. “△” increases the set value, “▽” decreases the set value, and a programmable function key that allows the user to specify the function. "PF" and a page switching key "□" for switching the display contents of the display unit 11 are arranged. The screen of the display unit 11 includes an engineering screen, a maintenance screen, an operation screen, and the like. The operation unit 40 is provided on the lower side of the display unit 11. The decrease key, the speed increase key, and the increase key are arranged in a horizontal row, and it is possible to increase or decrease the operation amount by the manual mode. To use. Press the speed up key together with the decrease key or the increase key to speed up the operation amount adjustment speed.

FIG. 2 is a configuration diagram of the illumination key top portion 20. An upper key top 21 having the letter “C”, a middle key top 22 having the letter “A”, and a lower key top 23 having the letter “M” are arranged in a vertical line. A branch gate portion 26 is attached to the upper side of each key top, and the other end of the branch gate portion 26 is connected to the left side trunk gate portion 25. When manufacturing such a key top portion by resin molding, the resin is supplied from the trunk gate portion 25, passes through each branch gate portion 26, and is filled with the key tops 21 to 23. A translucent resin is used as the resin. Since a laser version is used to create characters on this key top, there are two types of version creation. Here, the laser plate is used for coating the entire key and then spraying the paint on the laser to obtain illumination.

FIG. 3 is an explanatory diagram of the reflection type key top portion 30, where (A) is a basic type for a controller and (B) is a variation. In the basic form, an upper key top 31 having a figure of "△", a first middle key top 32 having a figure of "▽", a second middle key top 33 having a letter of "PF" and "□" Lower key tops 34 having a figure simulating the page turning are arranged in a vertical line. A branch gate portion 36 is attached to the upper side of each key top, and the other end of the branch gate portion 36 is connected to the left trunk gate portion 35. A resin having a light shielding property is used and is manufactured in the same manner as the illumination key top portion 20. There are three types of plate making for making letters and figures on a key top, and a laser plate and a silk plate are used.

The upper key top 31, the first middle key top 32, the second middle key top 33, and the lower key top 34 having a figure simulating the page turning of “□” without displaying characters in the variation. Are arranged. A cutout portion 37 is provided at a portion connecting the second middle key top 33 and the lower key top 34 of the trunk gate portion 35, and the upper key top 31 and the first middle key top are provided as necessary. Only 32 and the second middle key top 33 can be used.

FIG. 4 is an explanatory view of the basic shape and the variation on the front surface of the instrument. (A) is an indicator controller, (B) is a ratio setting device, (C) is a manual operator, and (D) is an indicator alarm meter , (E) is a manual setting device, and (F) is an indicator. FIG. 5 is a diagram comparing the display contents of the illumination key top portion 20 and the reflection type key top portion 30 of various instruments. Nothing needs to be displayed on the illumination key tops 20 of the indicator D and the indicator F. Therefore, a part of the reflection type key top portion 30 of the manual operation device C and the indicator F shown in FIG. 3B is cut off by the cutting portion 37 and used for the illumination key top portion 20. This promotes the sharing of parts and contributes to lower manufacturing costs.

[0012]

[Effect of the device]

 As described above, according to the present invention, since the illumination key top portion 20 and the reflection type key top portion 30 are independently manufactured integrally by the gate connection, the assembling property is improved. At the same time, it is possible to use a resin suitable for each application, so that the visibility is improved. Moreover, since it is only necessary to make a plate for creating characters and figures for the variation, it is possible to easily respond.

[Brief description of drawings]

FIG. 1 is a front view of an instrument used in the present invention.

FIG. 2 is a configuration diagram of an illumination key top portion 20.

FIG. 3 is an explanatory diagram of a reflective key top portion 30.

FIG. 4 is an explanatory view of a basic shape and a variation on the front surface of the instrument.

FIG. 5 is a diagram comparing display contents of an illumination key top portion 20 and a reflection type key top portion 30 of various instruments.

[Explanation of symbols]

 20 ... Key top for illumination 30 ... Reflective key top 21, 22, 23 ... Key top 31, 32, 33, 34 ... Key top 25, 35 ... Stem gate 26, 36 ... Branch Gate section

Claims (1)

[Scope of utility model registration request] 1. An instrument key top for use in an instrument in which an illumination key top portion 20 and a reflection type key top portion 30 are simultaneously used on an instrument operation surface, wherein a plurality of keys made of a translucent material are used. The top, the trunk gate portion 25 supplied with this translucent material at the time of molding, and the branch gate portion for connecting the trunk gate portion and each key top in a state of being arranged on the instrument operation surface. The illumination key top portion having 26, a plurality of key tops made of a light-shielding material amount, a trunk gate portion 35 supplied with this translucent material at the time of molding, and this trunk gate portion. The reflection type key top portion having a branch gate portion 36 for connecting the respective key tops in a state in which they are arranged on the instrument operation surface, and depending on whether the instrument is a basic type or a variation. A key top for instruments, which is characterized by creating characters on this key top.