JPH0749248A - Established pressure range display device for pressure gauge - Google Patents

Abstract

PURPOSE:To properly show an established pressure range without any change of a pressure gauge body, and easily change the range. CONSTITUTION:An elastic ring 2 is laid on the external surface of a pressure gauge body enclosure 1. In addition, the ring 2 is made movable and provided with one, or two or more setting needles 3 for showing an established pressure range. Then, the ring 2 is supported with a cover ring 4 coupled to the external surface of the enclosure 1. As a result, the ring 2 can be easily mounted on the external surface of a pressure gauge without any change of a pressure gauge body, and the needles 3 can be easily moved along the ring 2, caught by fingers. Thus, the established pressure range can be easily changed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a set pressure range display device for a pressure gauge which can surely display the set pressure range without changing the pressure gauge body and can easily change the set pressure range.

[0002]

2. Description of the Related Art From a pressure source to various processing machines, machine tools,
When operating by supplying pressure such as air or hydraulic oil to other machinery, a pressure gauge is used to visually check whether the pressure of this pressure source and the fluid supplied from this pressure source are set properly. Is installed. Further, the processing machine and the pressure source have a preset proper pressure, and the set range is displayed by a scale plate of the pressure gauge or the like so that the proper pressure can be read.

[0003]

It is desirable to display a predetermined set pressure range of the supplied pressure fluid so that it can be easily visually recognized. For this reason, conventionally, the range of the proper set pressure is displayed directly on the scale plate or the glass plate on the surface thereof by coloring or another method, so that it takes time to display, and the display due to dirt on the surface of the pressure gauge, etc. It may be erased or difficult to read. In order to improve this, a method of incorporating a device for displaying a set pressure on a pressure gauge has been proposed and put into practical use. However, in this case, the existing pressure gauge cannot be used as it is, and it is necessary to replace it with a new pressure gauge.

The object of the present invention is to be easily mounted on an existing pressure gauge, to easily change the set pressure range, and to display an accurate set pressure range so as not to move unintentionally due to vibration or the like. And

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, in which a ring having elasticity is arranged along the outer circumference of the container on the surface side of the pressure gauge body, and The gist is that it is movably provided with one or more setting needles for displaying a set pressure range, and that this ring is supported by a cover ring fitted to the surface side of the container.

[0006]

A ring having elasticity is provided along the outer circumference of the container on the surface side of the pressure gauge body, and one or more setting needles for displaying the set pressure range are provided so as to be movable to this ring. Since the ring is supported by the cover ring that fits on the surface side of the container, it can be easily mounted on the surface side of the pressure gauge without changing the pressure gauge body, and the setting needle can be hooked with your fingers to attach to the ring. Since it can be easily moved along, the setting pressure range can be easily changed. Further, since the setting needle is supported by a ring having elasticity so as to have a required frictional resistance, it is possible to accurately display the set pressure range without moving unintentionally even by a slight vibration due to a pressure change or the like. Become.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A set pressure range display device for a pressure gauge of the present invention will be described below with reference to the illustrated embodiment. 1 in the figure
Shows the body of the required pressure gauge, which is the same as the structure that is generally used in general. Inside the body of the vessel, a Bourdon tube that is deformed under pressure, and the deviation of this Bourdon tube are angularly displaced. The indicator 6 includes a mechanism for changing to the indicator, a pointer 6 for displaying pressure through the mechanism, a scale plate, and the like, and the outer surface of the pointer is covered with a transparent glass plate or the like.

A ring 2 formed in a circular shape with a piano wire or other wire having a required elasticity is provided along the surface side of the body 1 of the pressure gauge, preferably along the outer peripheral position of the glass plate. To do. The ring 2 may be annular or may be partially broken as shown,
Due to the elasticity of the ring 2, a predetermined resistance is given to the setting needle 3 to be described later to prevent the setting needle 3 from unintentionally moving.

The setting needle 3 is made of synthetic resin or another material and is formed into a shape such that a display can be surely performed, for example, a triangle, and a hole or groove is formed in the setting needle 3 to form the hole or groove. Insert the ring 2 so that the ring 2
The setting needle 3 is slidable along the. Further, necessary coloring may be applied so that the pressure setting range by the setting needle can be surely identified and visually recognized.

A cover ring 4 is fitted and supported on the outer periphery of the surface of the container. Since this cover ring 4 holds the ring 2 provided with the setting needle 3, one side edge of the short tube which is fitted on the container is bent at a substantially right angle to form a collar shape having an L-shaped cross section, and this short tube portion is The ring is held by the flange part while being fitted and fixed to the outer circumference of the container.

A guide ring 5 is used to prevent the setting needle 3 from being narrowed and difficult to move when the cover ring 4 is fitted into the container 1. The guide ring 5 has a ring length that is equal to or slightly larger than the thickness of the setting needle 3, and has an inner diameter that fits the outer peripheral edge of the setting needle 3. Therefore, the guide ring 5 is positioned on the outer peripheral portion of the ring 2 and is held together by the cover ring. It

Therefore, in order to assemble the components having the above-described structure, as shown in FIG. 1, a guide ring and a ring with a setting needle are superposed on the front surface of the pressure gauge body, and a cover ring is attached and fitted from the outer periphery thereof. Due to this, the pressure gauge and the set pressure range display device are integrated. At this time, the setting needle is appropriately pressed by the guide ring and the elastic force of the ring, especially the elasticity of the ring expanding in the outer peripheral direction, and the setting needle can be moved along the ring by fingers or the like. , It does not move inadvertently due to vibration of the pressure gauge. Therefore, the set pressure range can be easily changed.

[0013]

In the set pressure range display device of the pressure gauge of the present invention, a ring having elasticity is arranged along the outer circumference of the casing on the surface side of the pressure gauge main body, and the ring can be moved to this ring.
Or, it is equipped with two or more setting needles for displaying the set pressure range, and since this ring is configured to be supported by a cover ring that fits on the surface side of the container, the pressure gauge can be used without changing the pressure gauge body. It can be easily mounted on the front side of the meter, and the setting needle can be easily moved along the ring by hooking it with your fingers to change the setting pressure range easily. Further, since the setting needle is supported by the ring having elasticity so as to have a required frictional resistance, it is possible to accurately display the setting pressure range without moving unintentionally even by a slight vibration due to a pressure change or the like. There are advantages.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of a set pressure range display device in a pressure gauge of the present invention.

FIG. 2 is a sectional view of a set needle portion for displaying a set pressure range.

FIG. 3 is an external perspective view of a setting needle portion for displaying a set pressure range.

FIG. 4 is a perspective view of a ring provided with a setting needle.

FIG. 5 is an external perspective view of a set pressure range display device in the pressure gauge of the present invention.

[Explanation of symbols]

 1 Instrument 2 Ring 3 Setting needle 4 Cover ring 5 Guide ring 6 Pressure display pointer

Claims (1)

[Claims] 1. An elastic ring is provided along the outer circumference of a container on the surface side of a pressure gauge main body, and is provided with one or more setting needles for displaying a set pressure range so as to be movable to this ring. A set pressure range display device for a pressure gauge, characterized in that the ring is supported by a cover ring fitted to the surface side of the container.