CN2252725Y

CN2252725Y - Automobile tyre pressure measurer

Info

Publication number: CN2252725Y
Application number: CN 96211055
Authority: CN
Inventors: 张维
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-05-07
Filing date: 1996-05-07
Publication date: 1997-04-23
Anticipated expiration: 2006-05-07

Abstract

The utility model relates to an automobile tyre pressure measurer which is used for measuring the tyre pressure of various automobiles. The pressure of the automobile tyre can be conveniently measured. The automobile tyre pressure measurer is composed of a pen-shaped steel casing, a connecting rod piston, a compression spring, a scale rod, and an upper and a lower cover heads. The appearance of the utility model can imitate a pen, and can also arbitrarily imitate to the appearance of normal articles. The automobile tyre pressure measurer has the advantages of small appearance, easy carryover and use, high safety, low cost, etc.

Description

The air pressure of automobile tire measurer

The utility model belongs to a kind of barometric surveying device.Relate in particular to the measurement of various tire pressures.

Automobile is in operation, and the factor that influences every indexs such as automobile mechanical, electrical equipment, oil consumption is a lot, and wherein tire pressure is a very important factor.Current, because no barometric surveying equipment, people are the size of the tire pressure of intuition observation by rule of thumb just.Cause very big error so inevitably, have a strong impact on the automotive operation index.

The utility model purpose is a kind of variometer of development, makes people's measured automobiles tire pressure easily.

Principle of the present utility model is a tested gas when acting on the antagonistic force balance of pressure on the manometer inner carrier and manometer inner spring, atmospheric pressure value just can from this manometer slidably scale bar read.

The utility model advantage is that outward appearance is small and exquisite, can copy into the pen type profile, also can copy into the profile of various staples arbitrarily, carries and characteristics such as esy to use, safe and reliable, that price is easy so have.

Description of drawings: Fig. 1 is a cut-away view of the present utility model.

Embodiment of the present utility model is described below with reference to the accompanying drawings:

Structure is seen Fig. 1, and respectively there is screw thread mouth at steel casing 1 two ends.There is the end socket 2 of square hole in last screw thread mouth precession central authorities.Following screw thread mouth precession has the end socket 3 of an admission piece, embeds air seal cushion rubber 4 on the valve of end socket 3.Piston 5 with circular connecting rod is arranged in the shell.An air seal cushion rubber 6 that moves with piston is arranged on the piston 5.Piston 5 compresses by spring 7.Be with the square-section on the piston rod, circular top cover indicates the scale bar 8 that air pressure tolerance indicates above, can make friction tight sliding friction with upper cover 2.The utility model can be made pen-shaped on its appearance structure, is easy to carry.Can also copy the profile of other staple.

Principle of work of the present utility model:

When the measuring pulley air pressure, O-ring seal 4 is pressed against on the tire mouth.The exhaust valve spindle in the tire mouth is moved on admission piece 3 tops, and the gas in the tire enters measurer inside by admission piece 3.Because the effect of air pressure, piston 5 moves, and spring 7 moves thereupon.When gaseous tension equated with the antagonistic force of spring, piston 5 just stopped at a certain position.The displacement of piston 5 drives the displacement of scale bar 8.When taking off measurer observation air pressure size, piston 5 resets by the application force of spring 7, and scale bar 8 is transfixion owing to the friction that is subjected to upper cover 2.People observe the air pressure size of indicating on the scale bar easily.By manpower scale bar 8 is resetted then, prepare to measure next time and use.

Claims

1, a kind of air pressure of automobile tire measurer is characterized in that:

At measurer steel casing (1) two ends screw thread mouth is arranged respectively, there is the end socket (2) of square hole in last screw thread mouth precession central authorities, following screw thread mouth precession has the end socket (3) of an admission piece, on the valve of end socket (3), embed air seal cushion rubber (4), piston with circular connecting rod (5) is arranged in the shell, an air seal cushion rubber (6) that moves with piston is arranged on the piston (5), piston (5) compresses by spring (7), be with the square-section circular top cover on the piston rod, indicate the scale bar (8) of air pressure tolerance sign above.

2, variometer according to claim 1 is characterized in that its contour structures can make the pen shape.