JPH0522865Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Application of the Invention) The present invention relates to improvements in electronic meters such as electronic power supply and demand composite meters that measure electric energy and other matters.

(Background of the invention) With the development of electronic watt-hour meters, their multi-functionality has progressed, and they are now being used for ordinary watt-hour meters, precision watt-hour meters, reactive watt-hour meters, maximum demand watt-hour meters, time switches, etc. A complex electronic power supply and demand meter with functions has been developed. These instruments are equipped with an operation section consisting of several types of operation switches in order to select various functions, modify data for certain functions, and exchange instrument information with external devices. It will be done. Furthermore, a battery is also required to electrically back up the stored data.

Generally, the operation section is provided at the lower front of the instrument, but this position is structurally difficult when viewed from inside the instrument.
Since it is in front of the part where the terminal fitting of the terminal board and the lead wire from the meter body are connected, it is ideal to attach the operating section to the meter cover side. However, when assembling the instrument, it is necessary to electrically connect the operating section attached to the instrument cover and the instrument body attached to the base, which requires wiring between the two attached to separate parts. Therefore, the workability of wiring is poor.

On the other hand, the battery must be able to be replaced without breaking the certification seal between the base and the instrument cover, and it must also be possible to replace it easily even when the instrument cover is removed during manufacturing or repair. be. However, to date, nothing has been proposed that satisfies this need.

(Purpose of the invention) The purpose of the invention is to solve the above-mentioned problems, improve the workability of wiring between the operating section and the instrument body, and also make it possible to remove the instrument cover even when it is attached to the base. To provide an electronic meter whose battery can be replaced even when the battery is in a state of disrepair.

(Characteristics of the Invention) In order to achieve the above object, the present invention has an operation part case, to which the operation part is attached, in a position that protrudes forward from the base and fits within the instrument cover.
forming a battery storage section fixed to the base and opening toward the front in the operation section case, and removably attaching an operation section display plate that also serves as the battery storage section lid to the operation section case; An operating section cover that covers the front surface of the operating section display board and has a size that allows the operating section display board to be taken in and taken out in the open state is provided on the instrument cover so as to be openable and closable, so that the operating section can be attached to the operating section case. It is characterized in that it is supported by the base via the holder, and the operation section display plate can be removed regardless of whether the instrument cover is attached or detached.

(Example of the invention) Figure 1 shows an embodiment of the invention in a battery replacement state with the instrument cover removed, and Figure 2 shows an embodiment of the invention in a battery replacement state with the instrument cover attached. Examples are shown below.

A plurality of circuit boards 2 are attached to the base 1, and an instrument display board 3 is attached in front of the circuit boards 2. Circuit elements (not shown) are wired on the circuit board 2, and these constitute the instrument body. On the instrument display board 3 is a display 4 that displays various measurement data, current time, time zone, etc.
are placed and display characters are added. base 1
A terminal board 5 is provided below, and the terminal board 5 has terminal fittings (not shown) that are connected to external wiring.
The terminal board 5 is covered with a terminal cover 6. The terminal fittings are connected to lead wires (not shown) of the circuit board 2 within the base 1 . In front of the connection part between the terminal fitting and the lead wire of the circuit board 2, there is an operation part case 7.
are arranged, and the operation unit case 7 is attached to the base 1 with screws 8. When the operating unit case 7 is attached to the base 1, it projects forward from the base 1, and the projecting dimension is determined to fit within the instrument cover 9.

An operating section 10 is installed inside the operating section case 7, and the operating section 10 has a large number of push button type operating switches 11. The operating section 10 is electrically connected to the circuit board 2. Operation unit 10 and circuit board 2
Since both are attached to the base 1, electrical wiring work between the two is easy and has good workability. Next to the operation unit 10 inside the operation case 7,
A battery storage section 12 is formed that opens toward the front, and stores a plurality of batteries 14 that are mechanically supported by a substrate 13 and electrically connected. An operation section display plate 15 that also serves as a battery storage lid is removably attached to the operation section case 7 with screws 16 .

Instrument cover 9 is attached to base 1 by screws 17. The instrument cover 9 is provided with a display window 18 through which the instrument display board 3 can be seen from the outside. An operating section cover 19 is attached below the display window section 18 so as to be openable and closable, and is maintained in the closed state by cover fixing screws 20. The operation section cover 19 covers the front surface of the operation section display board 15, and is set to a size that allows the operation section display board 15 to be taken in and taken out in its open state.

During manufacturing or repair, the instrument cover 9 is removed from the base 1, as shown in FIG. In this case, the battery 14 can be replaced by removing the screws 16 and removing the operation unit display plate 15.

If the instrument cover 9 is attached to the base 1 and the screws 17 are sealed, open the operation section cover 19, remove the screws 16, and remove the operation section as shown in FIG. By removing the display plate 15 and taking it out of the instrument cover 9, the battery 14 can be replaced.

Although the illustrated embodiment is an electronic power supply and demand composite meter, the present invention is not limited thereto, and can be applied to electronic wattmeters and other electronic meters.

(Effects of the invention) As explained above, according to the invention, the operation part case to which the operation part is attached is placed in a position where it protrudes forward from the base and fits inside the instrument cover.
forming a battery storage section fixed to the base and opening toward the front in the operation section case, and removably attaching an operation section display plate that also serves as the battery storage section lid to the operation section case; An operating section cover that covers the front surface of the operating section display board and has a size that allows the operating section display board to be taken in and taken out in the open state is provided on the instrument cover so as to be openable and closable, so that the operating section is attached to the operating section case. In addition to being supported by the base via the holder, the operation section display board can be removed regardless of whether the instrument cover is attached or removed, which improves the workability of wiring between the operation section and the instrument body. The battery can be replaced with or without the instrument cover attached to the base.

[Brief explanation of the drawing]

Figure 1 is a perspective view of an embodiment of the present invention in a battery replacement state with the instrument cover removed, and Figure 2 is a perspective view of an embodiment of the present invention in a battery replacement state with the instrument cover attached. It is a diagram. DESCRIPTION OF SYMBOLS 1... Base, 2... Circuit board, 3... Instrument display board, 4... Display, 5... Terminal board, 7... Operating unit case, 9... Instrument cover, 10... Operating unit, 11...Operation switch, 12...Battery storage section, 14...Battery, 15...Operation unit display board, 16
...Screw, 19...Control unit cover.

Claims (1)

[Scope of utility model registration request] In an electronic instrument comprising a base to which an instrument body is attached and an instrument cover attached to the base so as to cover the front part of the instrument body, the operation part case to which the operating part is attached is removed from the base. A battery accommodating portion is fixed to the base at a position that protrudes forward and fits within the instrument cover, and a battery accommodating portion that opens toward the front is formed in the operating portion case, and the battery accommodating portion lid is provided in the operating portion case. An operation section display plate that also serves as an operation section display board is removably attached, and an operation section cover of a size that covers the front side of the operation section display board and allows the operation section display board to be taken in and taken out in an open state is attached to the instrument cover to open and close it. An electronic meter characterized by the fact that it can be installed.