JPS5847372Y2 - Rim-shaped indicator electric meter - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of a rim-shaped indicating electric meter.

Edge-shaped indicating electric meters such as voltmeters and ammeters installed on arrangement panels and other parts have a scale plate with scales and numbers fixed to the curved edge of the meter body, and a scale plate with scales and numbers attached to the meter element in the center of the body. The tip of the attached pointer extends and projects in front of the scale plate, and the voltage or current value is indicated by the operation of the pointer.

By the way, the scale and numbered scale plate arranged on the curved edge surface differ depending on the type of instrument, specifications, etc.
Accordingly, a wide variety of scale plates with numbers must be prepared.

However, if scale plates with different numbers were made for each type of instrument or for each different specification, the number of scale plates would be enormous, which would be extremely disadvantageous in terms of manufacturing and cost.

In addition, as shown in Figure 6, many conventional scale plates have numbers attached to the top of the scale plate, and depending on the position of the pointer movement, the numbers are hidden by the triangular tip of the needle. In some cases, the scale could be misread or the numbers could be misread, making it impossible to accurately read the current or voltage value.

In addition, since the general scale plate is usually fixed with screws, it has the disadvantage that it cannot be easily replaced if the specification changes or for other reasons.

This invention was made in view of the above.

Therefore, the purpose of the present invention is to separate the scale plate and number plate,
By creating a rim-shaped electric meter with a scale plate with only scales placed behind the pointer needle tip and a number plate with a window with only numbers placed in front of the needle tip, it is possible to use a wide variety of scale plates. This makes it possible to easily handle using very few scale plates and number plates without having to prepare large quantities, thereby expanding the applicability to changes in specifications, etc., and reducing the cost of the indicating electric meter and simplifying the product. be.

Another object of the present invention is to eliminate errors in reading the scale and inaccuracies in measurements caused by misreading the numbers by disposing a number board with only numbers attached in front of the pointer tip.

Another object of the present invention is to make the scale plate and number plate detachable so that they can be easily replaced as needed.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an example of the edge-shaped indicating electric meter of the present invention.

In the figure, reference numeral 1 denotes an instrument main body, which consists of a generally rectangular casing, has a wiring system such as electrical wiring inside, and has a curved edge surface 2 on the front.

Reference numeral 3 denotes an instrument element consisting of a magnet, an iron core, a coil, a spiral spring, etc., which is provided approximately at the center of the instrument body 1, supports the base of the pointer 4, and is configured to move the pointer 4 left and right according to voltage or current. It has become.

The pointer 4 extends from the approximate center of the instrument body 1 supported by the instrument element 3 to the protruding curved edge surface 2 on the front surface, and the triangular point 5 bent in an L-shape at the tip extends from the protruding curved edge surface 2. It extends and protrudes from surface 2.

This idea was applied to a two-needle type edge-shaped electric meter, and as shown in Fig. 3, there is a meter element 3 part provided on the back side of the meter body 1 at approximately the center of the meter body 1. A supported pointer 4 is provided, and a triangular point 5 bent in an L-shape at the tip thereof projects onto the protruding curved edge surface 2.

Reference numeral 6 denotes a scale plate having only a scale, and is provided behind (inside) the triangular needle tip 5 bent in the shape of a cursor.

That is, as shown in FIG.
A type scale plate holder 7 is provided, whereby a scale plate 6 having a notch in a corresponding portion is brought into close contact with the curved edge surface 2 and fixed detachably.

This scale plate 6 is fixed by the return force of its own leaf spring.

Reference numeral 8 denotes a number plate with only numbers attached, and is arranged in front (outside) of the triangular needle tip 5 bent in the shape of a cursor.

As shown in FIGS. 3 and 4, the number plate 8 has an elongated window 10 along the curved number plate surface 9, and L plate parts 11 are provided at both ends of the plate surface, and that part is used for measuring instruments. The number plate 8 is detachably fixed to the instrument body 1 so as to be placed in front of the curved edge surface 2 by inserting it into the number plate holding grooves 12 provided on both sides of the front part of the main body 1.

The number plate 8 is fixed by its own compression spring action.

As shown in FIGS. 2 and 3, the triangular tip 5 of the pointer 4 for indicating voltage or current and the scale of the scale plate 6 are recorded through the elongated window 10 of the number plate 8. Or the current value can be read.

A transparent plastic cover 13 called a cover glass is attached to the front of the instrument body 1 to protect the scale plate 6, the number plate 8, and the pointer 4 disposed therebetween. Although not shown, a cover is provided.

Further, a mounting bracket 14.14 is provided on the side surface of the instrument body 1, and a terminal 1 for connecting to signal wiring is provided at the rear of the instrument body 1.
5.15 is provided.

In the above embodiment, the case is explained in which it is applied to a 2-needle rim type indicating electric meter, but the 1-needle rim type indicating electric meter shown in FIG. The present invention is similarly applicable to type edge-shaped indicating electric meters.

When measuring voltage or current with the edge-shaped electric meter, signal wiring is connected to the terminal 15.15, and the scale of the scale plate 6 indicated by the triangular tip 5 of the pointer 4 is displayed on the number plate 8. It can be measured accurately by reading the numbers.

According to the present invention, a scale plate with only scale marks is placed behind the tip of the pointer, and a number plate with only numbers is placed in front of it, so the number plate or scale plate can be replaced depending on the specifications of the instrument. It can easily meet the required specifications, and there is no need to prepare a wide variety of scale plates with numbers as in the past.

In other words, by separating the scale plate with scales and the number plate with numbers as in the present invention, the scale plate or numbers can be used in common for any given specification, and the scale plate or numbers can be used in common for any given specification. By preparing plates in advance and combining them appropriately, it is possible to meet any specifications, to immediately respond to changes in specifications, and to simplify instrument manufacture and significantly reduce costs.

In addition, according to the present invention, since there is always a number board in front of the needle tip, the displayed numbers will not be hidden by the movement of the hand, eliminating misreadings and misreadings caused by this.
It is capable of accurately measuring voltage or current.

Furthermore, according to the present invention, since the scale plate and number plate are detachably attached and fixed to the instrument body, they can be easily removed and replaced in case of a change in specifications or non-conformity to use. It is something.

In short, the present invention consists of a scale plate with only scales and a number plate with numbers only, which are separated, and the scale plate is placed behind the tip of the pointer, and the number plate with an elongated window is placed in front. However, the shapes of the scale plate and number plate, the shape of the instrument body, the shape of the hands, and the number of hands as described above are not limited.

Also, although the mounting structure of the scale plate and number plate does not matter, it is important to provide an appropriate mounting structure on the part of the instrument body where these are attached.
It is desirable to have a structure in which the scale plate and the number plate can be detachably attached using the spring force of the scale plate and the number plate eye.

[Brief explanation of drawings]

Fig. 1 is a plan view of an embodiment of the present invention, with the surface cover of a rim-shaped electric meter with the surface cover removed; Fig. 2 is a front view thereof;
Fig. 3 is a perspective view of the main parts of the present invention, Fig. 4 is an exploded perspective view of the main parts of the invention, such as the attachment part of the scale plate and number plate, Fig. 5a,
1) is a front view of another embodiment of the edge-shaped indicating electric meter of the present invention, and FIG. 6 is a front view showing an example of a conventional edge-shaped indicating electric meter. DESCRIPTION OF SYMBOLS 1... Instrument body, 2... Protruding curved edge surface, 3... Instrument element, 4... Pointer, 5...
...Triangular needle tip, 6...Scale plate, 7...
...Scale holder, 8...Number plate, 10...
...Elongated window, 12...Number board holding groove.

Claims (1)

[Scope of utility model registration request] The needle tip of the pointer supported by the meter body is extended and protruded from the front edge of the meter body, and a scale plate with only a scale is provided behind the needle tip, and an elongated window along the plate is provided in front of the needle tip, and a numeral is provided. In an edge-shaped electric meter with a number plate with a chisel attached, the edge surface of the meter body is a protruding curved surface, a scale plate presser and a number plate presser groove are provided at both ends, and the scale plate itself has a spring. A rim-shaped indicating electric meter characterized in that a scale plate and a number plate are detachably attached to the meter body by a return force or by the compression spring action of the curved number plate itself.