CN2899039Y

CN2899039Y - Instrument protecting box

Info

Publication number: CN2899039Y
Application number: CN 200620071654
Authority: CN
Inventors: 李朝飞; 侯勤顺; 徐艳菊
Original assignee: XUZHOU JINGYING ELECTRIC APPLIANCE TECHNOLOGY Co Ltd
Current assignee: Jiangsu Elitech Electric Co., Ltd.
Priority date: 2006-05-15
Filing date: 2006-05-15
Publication date: 2007-05-09
Anticipated expiration: 2016-05-15

Abstract

The utility model discloses an instrument protecting box, which comprises a base and a protection cover which is articulated on the base and can be rotated up and down. A window which is opened in the base with same installing size of meter plate, a front sealing ring is provided around the window in the base, a back sealing ring is provided around the window at the back of the base. A convex sealing frame which is corresponded with the position in the front sealing ring is provided in the protection cover. The utility model has simple structure, convenient installment, and better sealing capability; thereby, dust and humidity can be prevented effectively, in particular to preventing some mordant gas from penetrating into the inner of meters from front or back of the meter plate, so the meter can be prevented from damage.

Description

The instrument protection box

Technical field

The utility model relates to dustproof, the damp-proof device of a kind of instrument, specifically a kind of instrument protection box.

Background technology

At present; instrument on the machine is installed on the switch board mostly; though being arranged, a transparent housing protects instrument; but transparent housing directly is stuck in the instrument outside; poorly sealed close with instrument, dust of long duration and moisture can slowly infiltrate gauge internal, particularly in the workshop of some gases that are corrosive; the easier damage that is corroded of instrument, influence is produced.

Summary of the invention

This purpose of this utility model just provides a kind of instrument protection box, infiltrates gauge internal to prevent dust and moisture, particularly some mordant gases, thus the corrosion instrument, and influence is produced.

This purpose of this utility model is achieved in that a kind of instrument protection box, it is characterized in that by pedestal and be hinged on the over cap that also can rotate up and down on the pedestal forming.Have the window identical in the pedestal with the instrument face plate installation dimension.Have the preceding seal groove of placing preceding O-ring seal around window in the pedestal, respectively there is an outstanding cylindrical jointed shaft the inner of two sides, pedestal top.Respectively there is clinching under the rectangle of an evagination on the base of pedestal near two sides places, the back side of pedestal has the back seal groove of placing the back O-ring seal around window; Over cap respectively has a U-shaped groove near on two lateral surfaces on top.Sealing frame with the corresponding evagination in preceding seal groove size position is arranged in the over cap.The over cap base is near an outstanding last clinching is respectively arranged on two sides.

The utility model is simple in structure, and is easy for installation, and good seal performance can prevent effectively that dust and moisture, particularly some mordant gases from infiltrating gauge internal, and the protection instrument is not damaged.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the utility model schematic perspective view;

Fig. 2 is the pedestal front view;

Fig. 3 is the A-A cut-open view of Fig. 2;

Fig. 4 is the over cap left view

Among the figure 1, pedestal; 2 over caps; 3, jointed shaft; 4, window; O-ring seal before 5; 6, back O-ring seal; 7, back seal groove; 8, preceding seal groove; 9, clinching down; 10, the sealing frame; 11, last clinching; 12, the U-shaped groove.

Embodiment

A kind of instrument protection box described in the utility model as shown in Figure 1 is made up of pedestal 1 and the over cap 2 that is hinged on the pedestal 1 and can rotate up and down; Shown in Fig. 2,3, have the window 4 identical in the pedestal 1 with the instrument face plate installation dimension.In the pedestal 1 around window 4 have place before the preceding seal groove 8 of O-ring seal 5, respectively there is an outstanding cylindrical jointed shaft 3 the inner of two sides, pedestal 1 top, respectively there is clinching 9 under the rectangle of an evagination on the base of pedestal 1 near the place, two sides.The back side of pedestal 1 has the back seal groove 7 of placing back O-ring seal 6 around window 4; As shown in Figure 4, over cap 2 respectively has a U-shaped groove 12 near on two lateral surfaces on top.Sealing frame 10 with the corresponding evagination in preceding seal groove 8 big or small positions is arranged in the over cap 2.Over cap 2 bases are near an outstanding last clinching 11 is respectively arranged on two sides.

During assembling the U-shaped groove on over cap 2 two sides 12 is aimed at jointed shaft 3 and push, jointed shaft 3 is snapped in the U-shaped groove 12, a promptly plastic instrument protection box.When over cap 2 closed, last clinching 11 clinching 9 of staying of linking closely before sealing frame 10 simultaneously and being pressed on the O-ring seal 5, prevented that dust and moisture, the more particularly gas that is corrosive from infiltrating in the instrument from the instrument case front.During installation over cap 2 is opened; instrument begins to put into logical window 4 from the rear portion; instrument face plate is stuck in outside the logical window 4, and back O-ring seal 6 and instrument fitting surface fit tightly, and prevents that dust and moisture, particularly some mordant gases from infiltrating in the instrument from the instrument case back.

Claims

1, a kind of instrument protection box, it is characterized in that by pedestal (1) and be hinged on pedestal (1) over cap (2) last and that can rotate up and down forming, have the window (4) identical in the pedestal (1) with the instrument face plate installation dimension, have the preceding seal groove (8) of placing preceding O-ring seal (5) around window (4), respectively there is an outstanding cylindrical jointed shaft (3) the inner of two sides, pedestal (1) top, respectively there is clinching (9) under the rectangle of an evagination on the base of pedestal (1) near two sides places, the back side of pedestal (1) has the back seal groove (7) of placing back O-ring seal (6) around window (4); Over cap (2) respectively has a U-shaped groove (12) near on two lateral surfaces on top; sealing frame (10) with the corresponding evagination in the big or small position of preceding seal groove (8) is arranged in the over cap (2), and over cap (2) base is near an outstanding last clinching (11) is respectively arranged on two sides.