JPS6116485Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an indicator used as a control instrument in a factory, etc., and in particular aims to make it possible to easily adjust the zero point of the indicator and the adjustment of the electric circuit without impairing the dust-proofing effect. It is something to do.

There is an indicator with a moving coil type indicator attached to the front of the housing and an electric circuit device housed behind the indicator. FIG. 1 and FIG. 2 show an example. In the figure, 1 is a housing. A moving coil indicator 2 is attached to the front of the housing 1. This example shows a case where a vertical indicator is used. The moving coil type indicator 2 is generally provided with a zero point adjuster 3 because the zero point of the pointer is mechanically shifted. Since the zero point adjuster 3 is adjusted relatively frequently, an adjustment hole 5 is formed in the side plate 4 at a position facing the zero point adjuster 3, and the zero point of the indicator 2 can be adjusted through this hole 5 without removing the side plate 4. I am trying to do it.

On the other hand, an electric circuit device 6 is housed behind the indicator 2, as shown in FIG. This electric circuit device 6
For example, an adjuster 7 for span adjustment is provided. Since the indicator 2 itself already has a dust-proof structure, even if the adjustment hole 5 is formed in the part facing the indicator 2, there is no risk of dust damage. However, since the circuit device 6 often does not have a dust-proof structure, it is not possible to form an adjustment hole at a position facing the span adjuster 7.

For this reason, conventionally, the side plate 4 is slidably attached to the housing 1, and when span adjustment is to be performed, the side plate 4 is pulled out. However, it is troublesome to pull out the entire side plate 4. That is, this type of indicator is normally installed on a panel board (not particularly shown), and for example, indicator 2
When performing zero point adjustment, the housing 1 is pulled out from the panel board. Since the zero point adjuster 3 of the indicator 2 is located close to the front, the zero point adjuster 3 of the indicator 2 can be exposed to the outside by slightly pulling out the housing 1 from the panel board. Therefore, the zero point adjustment of the indicator 2 can be easily performed without pulling out the entire housing 1. However, when adjusting the span of the electric circuit device 6, it is necessary to remove the side plate 4 entirely from the housing 1 because the adjuster 7 is often located at the rear of the housing 1. Therefore, when adjusting the regulator 7 of the electric circuit device 6, it is necessary to pull out the entire housing 1 from the panel board, and for example, it is necessary to prepare a stand or the like to support the housing 1. This becomes a tedious task.

The purpose of this invention is to provide an indicator that allows easy adjustment of the zero point of the indicator and adjustment of the electric circuit device.

FIG. 3 shows an embodiment of this invention. In this invention, an adjustment hole 5 is formed in the side plate 4 facing the zero point adjuster 3 of the indicator 2, and when the side plate 4 is slid, the adjuster 7 of the electric circuit device 6 is placed on the line of movement of the adjustment hole 5. It is intended to provide Preferably, the adjuster 7 is placed as close to the front as possible. With this configuration, the adjustment hole 5 can be connected to the electric circuit by slightly sliding the side plate 4 as shown in FIG. It can be opposed to the regulator 7 of the device 6. Therefore, the electric circuit device 6 can be adjusted without removing the side plate 4 entirely. As a result, both the zero point adjustment of the indicator 2 and the adjustment of the electric circuit device 6 can be carried out without pulling out the entire housing 1 of the indicator from the panel board, so that the adjustment can be easily performed. However, since the adjustment hole 5 is normally located opposite the zero point adjuster 3 of the indicator 2, even if dust enters the housing 1 through this hole 5, there is no risk of adversely affecting the electric circuit device 6. Therefore, it is possible to provide an indicating instrument that can be easily adjusted without reducing the dust-proofing effect, and its effects are extremely great in practical use.

Although the adjuster 7 of the electric circuit device 6 has been described above as a span adjuster, the adjuster 7 is not limited to a span adjuster and may be any other adjuster. Furthermore, it will be easily understood that not only one adjuster may be provided on the movement line of the hole 5, but also a plurality of adjusters may be arranged.

[Brief explanation of the drawing]

Figures 1 and 2 are perspective views for explaining a conventional indicating instrument; Figure 3 is a side view for explaining an embodiment of this invention; and Figure 4 is a perspective view for explaining the practical state of this invention. It is. 1: Housing, 2: Indicator, 3: Zero point adjuster of indicator, 4: Side plate, 5: Adjustment hole, 6: Electric circuit device, 7: Adjuster of electric circuit device.

Claims (1)

[Scope of utility model registration request] A housing having a moving coil indicator attached to the front side, a side plate supported so that the zero point adjuster of the indicator of the housing can slide on the opposite side, and when the side plate is in the closed position, the zero point adjuster of the indicator is slidable. An indicator comprising a hole formed at a position facing a zero point adjuster, and an adjuster for an electric circuit device housed in the casing and provided on a line of movement of the hole when the side plate is slid. .