CN218180921U - Waterproof dustproof electric measuring instrument - Google Patents

Abstract

The utility model provides a waterproof dustproof electric measuring instrument, including the drain pan that is used for installing circuit board subassembly, the lid fits the face lid at drain pan top edge, and locate the guard plate between face lid and the drain pan, the face is covered and is equipped with digital display window and a plurality of button, still be equipped with the concave part that corresponds digital display window on the face lid interior top surface, be equipped with the annular welding muscle that is used for connecting the guard plate through ultrasonic bonding in the concave part, still be connected with sealed cushion on a plurality of buttons, it still is equipped with the caulking groove outward to lie in the concave part on the face lid interior top surface, it is equipped with down the caulking groove to correspond on the guard plate, go up the caulking groove and constitute the inlaying dress to sealed cushion with lower caulking groove. The utility model discloses a guard plate welds closely on the concave part, can effectively avoid steam and dust to invade from digital display window department, and sealed cushion can closely cooperate between guard plate and face lid to effectively avoid steam and dust to invade when pressing a button action, the integral erection locate mode is also more hidden, and the front surface does not have obvious installation component, and the product is whole pleasing to the eye.

Description

Waterproof dustproof electric measuring instrument

Technical Field

The utility model relates to an electric measuring instrument especially relates to a waterproof dustproof electric measuring instrument.

Background

The electric measuring instrument is used for measuring common power parameters in a three-phase power grid and is widely applied to various control systems and switch cabinets. At present, the key type electric measuring instrument has poor waterproof and dustproof effects, is easy to generate static electricity during use, and has low use safety and poor use effect.

SUMMERY OF THE UTILITY MODEL

The shortcoming that exists to above-mentioned prior art, the utility model aims at providing a waterproof dustproof electric measuring instrument who is difficult for taking place electrostatic phenomenon, safety in utilization is high, excellent in use effect.

The utility model provides a technical scheme that its technical problem adopted, a waterproof dustproof electric measuring instrument, fit including drain pan, the lid that is used for installing circuit board subassembly the face at drain pan top edge is covered and is located the face lid with guard plate between the drain pan, the face is covered and is equipped with digital display window and a plurality of button, still be equipped with the correspondence on the top surface in the face lid the concave part of digital display window, be equipped with in the concave part and be used for through ultrasonic bonding connection the annular welding muscle of guard plate, it is a plurality of still be connected with sealed cushion on the button, lie in on the face lid top surface still be equipped with the caulking groove outside the concave part, correspond on the guard plate go up the caulking groove and be equipped with down the caulking groove, go up the caulking groove with the caulking groove constitutes to inlaying of sealed cushion under and adorns.

Adopt above-mentioned technical scheme's advantage: setting of annular welding muscle, make guard plate accessible ultrasonic wave technology closely weld on the concave part, welding effect is better, can effectively avoid steam and dust to invade from digital display window department, adopt sealed cushion and last caulking groove, the caulking groove cooperation inlays the mode of dress down, make sealed cushion can closely cooperate between guard plate and face lid, thereby effectively avoid steam and dust to invade when the button action, and the unit mount locate mode is also more concealed, make the positive surface of electrical measuring instrument not have obvious installation component, improve the whole pleasing to the eye degree of product.

Furthermore, a surrounding skirt edge is formed at the top of the outer side wall of the bottom shell, a plurality of clamping grooves are formed in the outer side wall of the skirt edge, clamping edges are formed at the edge of the inner top surface of the face cover corresponding to the skirt edge, and clamping blocks are arranged on the clamping edges corresponding to the clamping grooves.

Adopt above-mentioned technical scheme's advantage: through the cooperation of the clamping grooves in the skirt edges and the clamping blocks on the clamping edges, the face cover is fixedly connected with the bottom shell, the mode is simple, and the disassembly is also convenient.

Furthermore, bolt holes are formed in the corners of the skirt edges, bolt columns are arranged on the face covers corresponding to the bolt holes, threaded holes are radially formed in the bolt columns, and connecting bolts penetrate through the bolt holes to be fixedly connected with the bolt columns.

The technical scheme has the advantages that: through the cooperation that sets up bolt hole and bolt post, realized the dual fixed connection of face lid with the drain pan, fixed effect is better.

Furthermore, still be equipped with between the drain pan with the face lid with circuit board subassembly matched with prevents the displacement structure, prevent the displacement structure including form in the barb of the relative both sides in shirt rim bottom and be located support and press the post of relative both sides in the concave part, just the barb with support and press the post and be the distribution of staggering.

Adopt above-mentioned technical scheme's advantage: through the cooperation of barb, support the compression leg, realize prescribing a limit to the position of circuit board subassembly, the emergence of circuit board subassembly aversion phenomenon when the limited user that prevents plug binding post, spacing effect is good, uses safelyr.

Furthermore, a surrounding limiting convex edge is formed at the top of the inner side wall of the clamping edge, and the bottom height of the limiting convex edge is not higher than that of the pressing column.

The technical scheme has the advantages that: the formation of spacing protruding edge for the cooperation height of face lid and drain pan is injectd, can effectively avoid the face lid excessively atress and take place to support the cracked phenomenon of compression leg.

Further, still be equipped with the cooperation on the face lid the mounting structure of guard plate, mounting structure including form in a plurality of gaps of stepping down on the concave part inside wall and be located outside the concave part and rather than a plurality of locating pieces that the inside wall flushed.

Adopt above-mentioned technical scheme's advantage: the overlap setting that the breach of stepping down corresponds the guard plate to avoid the emergence of guard plate installation not-in-place phenomenon, the formation of locating piece has effectively improved the installation location effect of concave part to the guard plate, consequently, the formation of breach of stepping down and locating piece has guaranteed guard plate and annular welding muscle in close contact with, the follow-up welding of being convenient for.

Furthermore, all detachable is connected with two plastic mounting spare on the relative outer wall of drain pan.

The technical scheme has the advantages that: the arrangement of two plastic mounting parts makes the installation connection of the electric measuring instrument and an external carrier more stable.

Drawings

FIG. 1 is an exploded view of the present invention;

fig. 2 is a schematic view of the upper cover structure of the present invention.

In the figure: the plastic assembly comprises a bottom shell 1, a circuit board assembly 2, a circuit board assembly 3, a face cover 3, a protection plate 4, a digital display window 5, a key 6, a concave part 7, an annular welding rib 8, a sealing rubber pad 9, an upper caulking groove 10, a lower caulking groove 11, a skirt edge 12, a clamping groove 13, a clamping edge 14, a clamping block 15, a bolt hole 16, a bolt column 17, a barb 18, a pressing column 19, a limiting convex edge 20, a abdicating notch 21, a positioning block 22 and a plastic assembly 23.

Detailed Description

In order to more clearly illustrate embodiments and/or technical solutions in the prior art, embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort. The term "orientation" merely means a relative positional relationship between the respective members, and does not mean an absolute positional relationship.

Referring to fig. 1 to 2, a waterproof and dustproof electrical measuring instrument includes a bottom case 1 for mounting a circuit board assembly 2, a face cover 3 covering the top edge of the bottom case 1, and a protection plate 4 disposed between the face cover 3 and the bottom case 1, wherein a digital display window 5 and a plurality of keys 6 are disposed on the face cover 3, a recess 7 corresponding to the digital display window 5 is further disposed on the inner top surface of the face cover 3, an annular welding rib 8 for connecting the protection plate 4 by ultrasonic welding is disposed in the recess 7, the annular welding rib 8 is disposed so that the protection plate 4 can be tightly welded to the recess 7 by an ultrasonic process, the welding effect is better, vapor and dust can be effectively prevented from intruding from the digital display window 5, a sealing rubber pad 9 is further connected to the plurality of keys 6, an upper caulking groove 10 is further disposed on the inner top surface of the face cover 3 outside the recess 7, a lower caulking groove 11 is disposed on the protection plate 4 corresponding to the upper caulking groove 10, the upper caulking groove 10 and the lower caulking groove 11 form an embedded part for embedding the rubber pad 9, and the electrical measuring instrument can be more beautifully mounted on the surface, and the surface of the instrument, and the instrument can be more effectively mounted in a concealed manner without the embedded manner of a water vapor and water vapor positioning structure, and water vapor mounting method for improving the whole meter.

In this embodiment, bottom shell 1 lateral wall top department is formed with surrounding shirt rim 12, is formed with a plurality of draw-in grooves 13 on 12 lateral walls of shirt rim, and the top surface edge corresponds 12 formation card limits 14 of shirt rim in the face lid 3, and corresponds draw-in groove 13 on the card limit 14 and be equipped with fixture block 15, through the cooperation of draw-in groove 13 on 12 of shirt rim and the fixture block 15 on the card limit 14, realizes the fixed connection of face lid 3 and bottom shell 1, and the mode is simple, and it is also comparatively convenient to dismantle.

In this embodiment, a bolt hole 16 is further formed at a corner of the skirt 12, a bolt column 17 is arranged on the face cover 3 corresponding to the bolt hole 16, a threaded hole is radially formed in the bolt column 17, a connecting bolt penetrates through the bolt hole 16 to be fixedly connected with the bolt column 17, and through the matching of the bolt hole 16 and the bolt column 17, the double fixed connection between the face cover 3 and the bottom shell 1 is realized, so that the fixing effect is good.

In this embodiment, still be equipped with between drain pan 1 and the face lid 3 with circuit board assembly 2 matched with prevent the displacement structure, prevent the displacement structure including barb 18, and support the compression leg 19, barb 18 is formed in the relative both sides (front and back both sides) in shirt rim 12 bottom, the formation position of barb 18 is reasonable, the height of drain pan 1 has effectively been reduced, and the barb 18 of each side still all is equipped with two, can improve positioning effect like this, support compression leg 19 and form the relative both sides (the left and right sides) in concave part 7, namely barb 18 and support the compression leg 19 and be the distribution of staggering, the compression leg 19 of each side also is equipped with two, cooperation through barb 18, support compression leg 19, realize prescribing a limit to the position of circuit board assembly 2, the emergence of circuit board assembly 2 aversion phenomenon when limited prevention user plugged in the plug binding post, spacing effect is good, it is safer to use.

In this embodiment, a surrounding limiting convex edge 20 is further formed at the top of the inner side wall of the clamping edge 14, that is, after the face cover 3 is installed in place, the bottom of the limiting convex edge 20 abuts against the upper surface of the skirt 12, so as to limit the installation position of the face cover 3, and therefore, the formation of the limiting convex edge 20 enables the matching height of the face cover 3 and the bottom case 1 to be limited, and simultaneously, in order to avoid the occurrence of the fracture phenomenon of the pressing column 19, the bottom height of the limiting convex edge 20 is not higher than the bottom height of the pressing column 19.

In this embodiment, still be equipped with the mounting structure of cooperation guard plate 4 on the face lid 3, mounting structure is including forming a plurality of breach of stepping down 21 on the inside wall of concave part 7, and be located concave part 7 outside and rather than a plurality of locating pieces 22 that the inside wall flushed, more specifically, there is probably the overlap after cutting guard plate 4, the setting of the overlap that breach of stepping down 21 corresponds guard plate 4, thereby avoid guard plate 4 not to install the emergence of phenomenon, and because the formation of annular welding muscle 8 in concave part 7, guard plate 4 installation back can be higher than concave part 7, consequently, improve the installation positioning effect of concave part 7 to guard plate 4 through setting up locating piece 22, the formation of breach of stepping down 21 and locating piece 22 has guaranteed guard plate 4 and the inseparable contact of annular welding muscle 8, be convenient for subsequent welding.

In this embodiment, two plastic mounting members 23 are detachably connected to the opposite outer wall surfaces of the bottom case 1, and the two plastic mounting members 23 are arranged, so that the electrical measuring instrument is stably connected to the external carrier.

The foregoing is a more detailed description of the present invention, taken in conjunction with specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (7)

1. The utility model provides a waterproof dustproof electric measuring instrument, fits including drain pan (1), the lid that is used for installing circuit board subassembly (2) face lid (3) at drain pan (1) top edge and locating face lid (3) with guard plate (4) between drain pan (1), be equipped with digital display window (5) and a plurality of button (6), its characterized in that on face lid (3): still be equipped with on the top surface in face lid (3) and correspond concave part (7) of digital display window (5), be equipped with in concave part (7) and be used for through ultrasonic welding connection annular welding muscle (8) of guard plate (4), it is a plurality of still be connected with sealed cushion (9) on button (6), lie in on the top surface in face lid (3) concave part (7) still are equipped with caulking groove (10) outward, correspond on guard plate (4) go up caulking groove (10) and be equipped with down caulking groove (11), go up caulking groove (10) with caulking groove (11) constitute the dress that inlays to sealed cushion (9) down.

2. A waterproof and dustproof electrical measuring instrument according to claim 1, characterized in that: a surrounding skirt edge (12) is formed at the top of the outer side wall of the bottom shell (1), a plurality of clamping grooves (13) are formed in the outer side wall of the skirt edge (12), clamping edges (14) are formed at the edges of the inner top surface of the face cover (3) corresponding to the skirt edge (12), and clamping blocks (15) are arranged on the clamping edges (14) corresponding to the clamping grooves (13).

3. A waterproof and dustproof electrical measuring instrument according to claim 2, characterized in that: bolt holes (16) are further formed in the corners of the skirt edges (12), bolt columns (17) are arranged on the face covers (3) corresponding to the bolt holes (16), threaded holes are radially formed in the bolt columns (17), and connecting bolts penetrate through the bolt holes (16) to be fixedly connected with the bolt columns (17).

4. A waterproof and dustproof electrical measuring instrument according to claim 2 or 3, characterized in that: the anti-displacement structure matched with the circuit board assembly (2) is further arranged between the bottom shell (1) and the face cover (3), the anti-displacement structure comprises barbs (18) formed on two opposite sides of the bottom of the skirt edge (12) and pressing columns (19) located on two opposite sides in the concave portion (7), and the barbs (18) and the pressing columns (19) are distributed in a staggered mode.

5. The waterproof and dustproof electrical measuring instrument according to claim 4, characterized in that: and a surrounding limiting convex edge (20) is further formed at the top of the inner side wall of the clamping edge (14), and the bottom height of the limiting convex edge (20) is not higher than that of the pressing column (19).

6. A waterproof and dustproof electrical measuring instrument according to claim 1, characterized in that: still be equipped with the cooperation on face lid (3) the mounting structure of guard plate (4), mounting structure including form in a plurality of breach of stepping down (21) on concave part (7) inside wall and be located outside concave part (7) and rather than a plurality of locating pieces (22) that the inside wall flushed.

7. The waterproof and dustproof electrical measuring instrument according to claim 1, characterized in that: all detachable be connected with two plastic mounting spare (23) on the relative outer wall of drain pan (1).

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