CN2504598Y

CN2504598Y - Anti-damp digit indicator caliper

Info

Publication number: CN2504598Y
Application number: CN 01247491
Authority: CN
Inventors: 周伟; 吴峰山; 彭朋
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-08-30
Filing date: 2001-08-30
Publication date: 2002-08-07
Anticipated expiration: 2011-08-30

Abstract

The utility model provides a damp proofing digital display caliper which takes the damp proofing measurements based on the present digital display caliper, wherein, an insulating waterproof layer is coated on a conductive hole, the surface of an active grate printed circuit board and the surface of a stationary grate; seal pads are arranged between the active grate printed circuit board and a shell, a battery cover plate and the shell; the assembling gap of the periphery of the shell is embedded with insulating waterproof materials, which prevents the immersion of hydrosphere, achieves the purpose of damp proofing and solves the problem that the circuits of the digital display caliper can not work normally because of the electric leakage or short circuit caused by using the circuits in damp environments especially in the work stations such as the lathe men and the grinders which adopt the aqueous solution emulsifier as the cooling fluid. The damp proofing digital display caliper has good seal performance and remarkable damp proofing effect, which can ensure the normal operation of the digital caliper in bad damp environments.

Description

Moistureproof digital display calliper

(1) technical field:

The utility model belongs to measuring appliance, the moistureproof digital display calliper that particularly uses in wet environment.

(2) background technology:

Digital display calliper with its measuring accuracy height, reading is directly perceived, easy to use is applied, and progressively become survey instrument commonly used and replace vernier caliper.But the sensor of digital display calliper and digital circuit part is used in a humid environment easily to condense because of the infiltration of water vapor and is formed moisture film and cause electric leakage or short circuit, make the digital display calliper cisco unity malfunction so that lost efficacy, thereby limited its usable range, especially be station such as turner, the grinder etc. of liquid coolant at some with the aqueous solution emulsifying agent, the use of digital display calliper is restricted especially.

(3) summary of the invention:

The utility model designs for the moistureproof problem that solves digital display calliper.

In order to achieve the above object, the technical measures that the utility model is taked are: this protection against the tide digital display calliper comprises digital display calliper, it is characterized in that: the moving grid printed circuit board surface of described digital display calliper, conductive hole, fixed grid surface coated have one deck insulating waterproof layer, between moving grid printed circuit board and the shell, be provided with seal gasket between battery cover board and the shell, the fit-up gap of shell periphery is by the embedding of insulative water-proof material.

The utility model has the advantages that: good seal performance, have significant moisture effect, can guarantee digital display calliper operate as normal in moist rugged environment.

(4) description of drawings:

Fig. 1 is the front view of this protection against the tide digital display calliper.

Fig. 2 is that the master of Fig. 1 looks exploded view.

Fig. 3 is the exploded view of analysing and observe parts of Fig. 1.

(5) embodiment:

Below in conjunction with accompanying drawing the utility model is described in further detail: in Fig. 1, the 1st, shell is the plastic moulding; The 2nd, blade is hardware, vertically has groove; The 3rd, the fixed grid plate, it is that single face applies one deck Copper Foil and is commonly called as copper clad plate on insulated substrate, scribes into the pattern of grizzly bar shape on it, grizzly bar faces up, and is embedded in the groove of blade 3; The 4th, battery case cover plate, the 14th, dog screw.Fig. 2 is that the master of Fig. 1 looks exploded view, and the top is measuring head among the figure, the 5th, and the chi frame is hardware, is slidedly assemblied on the blade 2, and move left and right chi frame can make measures mouthful opening and closing, and screwed in place screw 14 can be located.The 6th, seal gasket, the 7th, the printed circuit board of moving grid, it also is to make with a two-sided copper clad plate of rectangle, and one side is printed with the grizzly bar of moving grid, and another side is printed with signal processing circuit, and the circuit on two sides is connected by conductive hole 9.The 1st, shell body, wherein, and the 8th, the seal gasket in the battery case, the 4th, battery case lid.Fig. 3 be Fig. 1 analyse and observe the parts exploded view, 1 be shell, the 6th from top to bottom among the figure, seal gasket, the 7th, moving grid printed circuit board, the 9th, conductive hole, the 10th, the insulating waterproof layer, the 11st of coating, pad, the 3rd, fixed grid plate, the 12nd, the insulating waterproof layer, the 2nd of coating, blade, the 13rd, the chi bar, the 5th of measuring workpieces hole depth, chi frame.Shell 1, moving grid printed circuit board 7, seal gasket 6 common assemblings are tightened to integral body with screw, the perimeter mounted gap pours into the sealing of insulative water-proof material, then this assembly is packed on the chi frame 5 with pad 11, the effect of pad 11 is the free gaps that guarantee to have between moving grid plate and the fixed grid plate 0.1mm.

Through after taking above-mentioned inside and outside sealed damp-proof measure, can effectively stop outside aqueous vapor to immerse, even there is a small amount of aqueous vapor to immerse, because circuit part all is coated with the insulating waterproof layer sealing, can not exert an influence yet, thereby guarantee that digital display calliper also can operate as normal in moist rugged surroundings circuit working.

Claims

1, moistureproof digital display calliper, comprise digital display calliper, it is characterized in that: the moving grid printed circuit board surface of described digital display calliper, conductive hole, fixed grid surface coated have one deck insulating waterproof layer, between moving grid printed circuit board and the shell, be provided with seal gasket between battery cover board and the shell, the fit-up gap of shell periphery is by the embedding of insulative water-proof material.