CN209028131U - A kind of three-phase digital measure and control instrument - Google Patents

Abstract

The utility model relates to a kind of three-phase digital measure and control instruments, including instrument housing, display screen, operate key asembly and snap component, the display screen is embedded the front surface in the instrument housing, the operation key asembly is connected to the lower section of the instrument housing, the partial region of the outer surface of the operation key asembly is formed with operation control key, the mobile base is installed in the lower surface of the operation key asembly, the snap component is installed in the rear surface of the instrument housing, the front surface corresponds to visible area, the rear surface corresponds to not visible region, the operation key asembly can be rotated with relative axis L, so that the operation control key switches under the visible area and not visible zone state, the axis L is vertical with the lower surface of the instrument housing.The utility model has the beneficial effects that since non-working person can not touch operation control key, because of the mistake touching or the interference of non-working person without personnel occur.

Description

A kind of three-phase digital measure and control instrument

Technical field

The utility model relates to field of instrumentation technology more particularly to a kind of three-phase digital measure and control instruments.

Background technique

Currently, the Intelligent Measure and Control Instrument for electric power observation and control is widely used with the development of electric power, but it is existing There is many defects for some Intelligent Measure and Control Instruments, such as are easy non-working person's operation and cause maloperation or malicious operation, lead Equipment damage is caused, safety is poor.

Utility model content

The purpose of this utility model is to provide a kind of three-phase digital measure and control instrument for above-mentioned status.

The technical solution adopted in the utility model: a kind of three-phase digital measure and control instrument, including instrument housing, display screen, behaviour Make key asembly and snap component, the display screen is embedded the front surface in the instrument housing, and the operation key asembly is connected to The partial region of the lower section of the instrument housing, the outer surface of the operation key asembly is formed with operation control key, the activity Pedestal is installed in the lower surface of the operation key asembly, and the snap component is installed in the rear surface of the instrument housing, described Front surface corresponds to visible area, and the rear surface corresponds to not visible region, and the operation key asembly can be rotated with relative axis L, So that the operation control key switches under the visible area and not visible zone state, the axis L and the meter housing The lower surface of body is vertical.

The beneficial effects of the utility model are: since non-working person can not touch operation control key, because without sending out The mistake of stranger person is touched or the interference of non-working person.

Detailed description of the invention

Attached drawing involved in the utility model embodiment description is simply introduced, in order to the utility model reality It applies the technical solution in example to be become apparent from, completely illustrated, some implementations of following attached drawing only for the utility model Example, is not intended to limit the utility model, under the premise of without other creative works, it is clear that can be according to these attached drawings Obtain other accompanying drawings.

Fig. 1 is a kind of structural schematic diagram of three-phase digital measure and control instrument of the utility model；

Fig. 2 is the structural schematic diagram of second annular groove in Fig. 1；

Fig. 3 is the structural schematic diagram that key asembly is operated in Fig. 1；

Fig. 4 is the structural schematic diagram of the second sliding part in Fig. 3.

Specific embodiment

The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical It is novel, it is not intended to limit the scope of the utility model.

As shown in Figure 1, the utility model provides a kind of three-phase digital measure and control instrument, including instrument housing 1, display screen 2, behaviour Make key asembly 3 and snap component 4, the display screen 2 is embedded the front surface in the instrument housing 1, and the operation key asembly 3 connects It connecing in the lower section of the instrument housing 1, the partial region of the outer surface of the operation key asembly 3 is formed with operation control key 300, The operation key asembly 3 can be rotated around axis L, and the axis L is vertical with the lower surface of the instrument housing 1, the dump bottom Seat 4 is installed in the lower surface of the operation key asembly 3, and the snap component 5 is installed in the rear surface of the instrument housing 1, institute State visible surface region when front surface counterpart personnel operation, the not visible face region when rear surface counterpart personnel operates, institute Stating operation 3 relative axis L of key asembly rotation cuts the operation control key 300 in the visible area and not visible region It changes.

When staff operates, operation key asembly 3 can be rotated, and the position of operation control key 300 is made to exist The visible area of instrument housing and the switching of non-visible area domain.

In inoperative, when the operation control key 300 of operation key asembly 3 is located at the not visible face region of instrument housing 1, this When the three-phase digital measure and control instrument be inoperable state, since non-working person can not touch operation control key 300, thus The mistake touching or the interference of non-working person of personnel will not occur.

The lower surface S1 of instrument housing 1 is circle combined with Figure 1 and Figure 2, and the edge along the lower surface S1 extends downwardly shape At cover 11, the inner wall of the cover 11 is equipped with first annular groove 121 and second annular groove 122, first annular groove 121 Inner wall surface it is smooth, the detent slot 123 there are two radial symmetric is formed in second annular groove 122.

Preferably, first annular groove 121 and 122 place plane of second annular groove are vertical with axis L.

Such as Fig. 3, operating key asembly 3 includes interconnecting piece 31 and operation key ontology 32, and interconnecting piece 31 is slidably installed in the cover 11 In, operation key ontology 32 is connected to the lower section of the interconnecting piece 31 and is located at the outside of cover 11, the operation key ontology 32 Outer surface portion subregion is equipped with the operation control key 300.

In conjunction with Fig. 4, the interconnecting piece 31 has an outer peripheral surface of circular ring shape, the interconnecting piece 31 have along its surface it is radial to Outer first sliding part 311 outstanding and the second sliding part 312, first sliding part 311 is annular, and is slidably installed in and sets first In annular groove 121, the first sliding part 311 is slidably installed in the limit that interconnecting piece 31 Yu cover 11 are realized in first annular groove 121 Position connection；Second sliding part 312 cunning is set in the second annular groove 12, and the second sliding part 312 is formed with the corresponding detent The protrusion 313 of slot 123, described raised 313 have elastic recovery properties, when being made to grasp by certain external force to operation key ontology 32 When making key asembly 3 around axis L rotation, described raised 313 can be detached from from the detent slot 123.

Preferably, described raised 313 be rubber.

It should be noted that the operation control key 300 has when described raised 313 are located in detent slot 123 One of two states: it is corresponding with the front surface, and is fully located at visible area, or corresponding with the rear surface, and It is fully located at not visible region.

Such as Fig. 3, the snap component 4 includes hanging plate 41, elastic plate 42 and convex block 43, and one end of the hanging plate 42 is connected to The rear surface of the instrument housing 1；The upper end of the elastic plate 41 is connected in the other end of hanging plate 42, and the convex block 43 is fixed on The side of the relatively described instrument housing 1 of elastic plate 42.

Preferably, the material of elastic plate 42 is ABS.

The inside of the instrument housing 1 is additionally provided with circuit board, current transformer, voltage transformer, electric energy computation chip, Signal amplification circuit, ac-dc converter circuit and AVR processor, the current transformer, voltage transformer, electrical energy measurement core Piece, signal amplification circuit, ac-dc converter circuit and AVR processor are respectively welded on circuit boards；The current transformer and The output end of voltage transformer and the input terminal of electric energy computation chip are electrically connected；The output end and letter of the electric energy computation chip The input terminal of number amplifying circuit is electrically connected；The output end of the signal amplification circuit and the input terminal electricity of ac-dc converter circuit Property connection；The input terminal of the ac-dc converter circuit and the input terminal of AVR processor are electrically connected；The AVR processor Input terminal and regulation button are electrically connected, and output end and circuit board are electrically connected.

In use, the elastic plate 42 of snap component 4 is broken into two with one's hands with the direction far from the instrument housing 1, and it is fixed on certain On one fixing piece, by operation 3 relative axis L of key asembly rotation, it is located at the operation control key 300 of operation key ontology 32 not visible Region when operator being needed to operate, by operation 3 relative axis L of key asembly rotation, makes the operation control key of operation key ontology 32 300 are located at visible area.

The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, all in the utility model Spirit and principle within, any modification, equivalent replacement, improvement and so on should be included in the protection model of the utility model Within enclosing.

Claims (9)

1. a kind of three-phase digital measure and control instrument, which is characterized in that including instrument housing, display screen, operation key asembly and buckle group Part, the display screen are embedded the front surface in the instrument housing, and the operation key asembly is connected under the instrument housing The partial region of side, the outer surface of the operation key asembly is formed with operation control key, and the mobile base is installed in the behaviour Make the lower surface of key asembly, the snap component is installed in the rear surface of the instrument housing, and the front surface corresponds to visible area Domain, the rear surface correspond to not visible region, and the operation key asembly can be rotated with relative axis, so that the operation control key Switch under the visible area and not visible zone state, the axis is vertical with the lower surface of the instrument housing.

2. a kind of three-phase digital measure and control instrument according to claim 1, which is characterized in that the lower surface of the instrument housing is Circle is downwardly extending cover along the edge of the lower surface, and the inner wall of the cover is equipped with first annular groove and second The inner wall surface of annular groove, first annular groove is smooth, and the detent slot there are two radial symmetric is set in second annular groove.

3. a kind of three-phase digital measure and control instrument according to claim 2, which is characterized in that the operation key asembly includes connecting Socket part and operation key ontology, the interconnecting piece are slidably installed in the cover, and operation key ontology is connected to the lower section of the interconnecting piece And it is located at the outside of the cover, the outer surface portion subregion of the operation key ontology is equipped with the operation control key.

4. a kind of three-phase digital measure and control instrument according to claim 2, which is characterized in that the first annular groove and second Plane where annular groove is vertical with the axis.

5. a kind of three-phase digital measure and control instrument according to claim 3, which is characterized in that the interconnecting piece has circular ring shape Outer peripheral surface, the interconnecting piece have the first sliding part and the second sliding part projected radially outwardly along its surface, and described first is sliding Moving part is annular, and is slidably installed in and sets in first annular groove, and second sliding part can be slided along the second annular groove, Second sliding part has the projection piece of the corresponding detent slot, and the projection piece has elastic recovery properties.

6. a kind of three-phase digital measure and control instrument according to claim 5, which is characterized in that when the projection piece is located at the card When in the slot of position, the operation control key has one of two states: it is corresponding with the front surface, and is fully located at visible area Domain, or it is corresponding with the rear surface, and it is fully located at not visible region.

7. a kind of three-phase digital measure and control instrument according to claim 6, which is characterized in that the projection piece is rubber.

8. a kind of three-phase digital measure and control instrument according to claim 1, which is characterized in that the snap component includes hanging Plate, elastic plate and convex block, one end of the hanging plate are connected to the rear surface of the instrument housing；The upper end of the elastic plate is connected In the other end of the hanging plate, the convex block is fixed on the side of the relatively described instrument housing of elastic plate.

9. a kind of three-phase digital measure and control instrument according to claim 8, which is characterized in that the material of the elastic plate is ABS。