JPS6331452Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a switching display device for a slide switch that makes it easy to read the switching position of a slide switch attached to an electrical device.

In the field of electrical measuring instruments, slide switches are often used as power switches, range switches, or function switches. This slide switch, like other electronic components, is also becoming more compact, and when it comes to an extremely small structure, the movement distance for one pitch of the operating knob is about 2 mm at most.

By the way, clearly indicating where the switch is set is important for the safe use of any device, not just measuring instruments. It becomes difficult to read which position is actually switched. For this reason, conventionally, multiple indicators corresponding to the switching position were provided in the window for the operation knob formed on the panel surface, and leader lines were drawn radially from these indicators to display an enlarged display of the switching position. are doing. However, in this display mode, the distance between the indicators at the base of the leader line is still narrow, and therefore it is still difficult to read the switching of the slide switch at a glance.

Therefore, an object of this invention is to provide a switching display device for a slide switch that allows the switching state of the switch to be read at a glance even in the case of a small slide switch whose operating knob has a short moving distance.

Hereinafter, embodiments of this invention will be described with reference to the accompanying drawings.

1 and 2 show an example in which a slide switch switching display device 1 according to this invention is applied to a tester. This switching display device 1 is
A slide switch 4 is mounted on a printed circuit board 2 and installed in a housing 3 together with the slide switch 4. As is well known, the slide switch 4 consists of a switch body 5 and an operating knob 6, and the operating knob 6 is slidably disposed within an operating window 7 formed in the housing 3.
In this embodiment, the slide switch 4 has three
A contact type is used, and therefore, the operation knob 6 can be operated at each of the upper, middle, and lower operation positions.
It is selectively set in each position of (b) and (c). This allows each contact of the slide switch 4 to be switched. Further, a slide plate 8 that moves together with the operating knob 6 is disposed between the housing 3 and the main body 5 of the slide switch 4.
is placed parallel to. More specifically, the slide plate 8 has a through hole 9 into which the operating knob 6 is fitted, and is fitted onto the operating knob 6 by inserting the operating knob 6 into the through hole 9. In this case, the contact portion between the operating knob 6 and the through hole 9 may be fixed with an adhesive.

In this invention, the following display means is provided using the slide plate 8 described above. First, first, second, and third display windows 1 are installed in a portion of the housing 3 located on the side of the operation window 7.
0, 11, and 12 are arranged parallel to the sliding direction of the operating knob 6. In this case, each display window 10,
The interval between 11 and 12 is defined based on l ₁ shown by the following equation (1).

l ₁ = P × n ... (1) (In the formula, P is the distance between the operating positions A, B, and C, that is, the distance equivalent to 1 pitch between the contacts, and n is the number of contacts of the slide switch 4. ) Therefore, in this embodiment, l ₁ =3×P is determined. On the other hand, three indicators 13, 14, 15 consisting of stars are displayed on the slide plate 8, corresponding to the display windows 10, 11, 12, and in this case, the intervals between the indicators 13, 14, 15 are is as below (2)
It is defined based on l ₂ shown in the formula.

l ₂ =P×(n-1) (2) Therefore, in this embodiment, l ₂ =2×P. Furthermore, as shown in Fig. 1,
The indicator 15 is set to appear in the display window 12 when the operating knob 6 is at the operating position C. In addition, each display window 10, 11, 12
Around , there are provided an A symbol representing the current measurement range, a V symbol representing the voltage measurement range, and an Ω symbol representing the resistance measurement range.

Next, the effect of this invention will be explained. In the state shown in FIG. 1, the index 15 is displayed on the display window 12, the distance between the index 14 and the display window 11 is 1×P, and the distance between the index 13 and the display window 10 is 2×P. . Therefore, when the operating knob 6 is set to the operating position RO, the slide plate 8 moves upward by an amount P, so that the indicator 15 disappears from the display window 12 and the display window 11
Indicator 14 appears. Further, when the operating knob 6 is set to the operating position C, the slide plate 8 moves upward by P again, so that the indicator 14 disappears from the display window 11 and the indicator 13 appears in the display window 10.
Therefore, indicators 13, 14, and 15 are selectively displayed in the respective display windows 10, 11, and 12 corresponding to the operating positions A, B, and C of the operating knob 6, respectively.

In addition, as a modification of the above-described embodiment, the indicators 13, 14, and 15 may be marks of different colors. Further, as shown in FIG. 3, when the slide switch 4 has a large number of contacts, for example, when the number of contacts is 5, the display windows can be arranged in two rows.
In this case as well, the interval between each display window and the interval between each index are l ₁ and
It is determined based on l ₂ .

As is clear from the description of the embodiments described above, according to this invention, the switching display position of the slide switch is enlarged, and the display is made using indicators appearing in the display window, making reading extremely impressive. Since the structure is simple, it can be manufactured at low cost.

[Brief explanation of drawings]

FIG. 1 is a plan view of a switching display device for a slide switch according to this invention, FIG. 2 is a sectional view taken along the line - in FIG. 1, and FIG. 3 is a plan view showing another embodiment. In the figure, 1 is a slide switch switching display device;
2 is a printed circuit board, 3 is a housing, 4 is a slide switch, 5 is a switch body, 6 is an operation knob, 7 is an operation window, 8 is a slide plate, 10, 11,
12 is a display window, 13, 14, 15 are indicators,
B and C are the operating positions of the knobs.

Claims (1)

[Claims for Utility Model Registration] A slide switch having three or more contacts installed in the housing of an electrical device, an operation window provided in the housing for operating the knob of the slide switch, and an operation window for operating the knob of the slide switch. A switching display device for a slide switch, comprising: a plurality of display windows provided in the housing parallel to a sliding direction of the knob in correspondence with operating positions; and a slide plate that moves together with the knob within the housing. , the display windows are arranged at intervals of P×n (where P represents the moving distance between the contacts of the knob, and n represents the number of contacts of the slide switch), and the slide plate has each of the above-mentioned display windows. A plurality of indicators corresponding to each of the display windows are arranged with an interval of P x (n-1) as a reference, and any one of them appears in the display window corresponding to the operation position of the knob. . A switching display device for a slide switch, wherein the indicator selectively appears in the display window in accordance with the operating position of the knob.