CN2205890Y

CN2205890Y - Pedal air horn valve

Info

Publication number: CN2205890Y
Application number: CN 94229636
Authority: CN
Inventors: 魏吉福
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-27
Filing date: 1994-09-27
Publication date: 1995-08-23
Anticipated expiration: 2004-09-27

Abstract

The utility model is composed of a valve body, a valve rod, an upper cover, a lower cover, a metal lining, a spring, a sealing rubber ring, an air pump, an air chamber and an exhaust passage, wherein, improved on the basic of the existing uniformity art, the valve rod, the sealing rubber cover and matrix tablets existing in the former acoustic horn valve are replaced by the valve rod and the metal lining. The service life of the existing valve is two to three times greater than the former valve, the utility model not only reduces the trouble of frequent replacement of acoustic horn valve but also saves the valve replacement fees.

Description

Pedal air horn valve

The utility model relates to a kind of automobile treadle formula air horn valve.

Existing air horn valve, by valve body, valve rod, sealer lid, matrix tablet, spring, O-ring seal, air pump, air chamber, air outlet flue and upper and lower cover constitute, air pump and air outlet flue all communicate with air chamber, O-ring seal makes between valve body and the lower cover to seal between loam cake and valve body, and spring is between lower cover and sealer lid, valve rod is upwards pushed up, and making has a little gap between valve rod and the loam cake.Since the rubber product insufficient strength, thus be embedded in the metal frame sheet at the sealer lid, but rubber product is short working life, and the use of automobile treadle wind-tone horn is very frequent, so only be some months the working life of existing foot-operated air horn valve.The driver is often worried for changing the air horn valve.

In view of existing foot-operated air horn valve is in use changed frequent problem, the purpose of this utility model is to improve on the basis of existing air horn valve, and the life-span of air horn valve is prolonged greatly.

The technical measures that the utility model is taked have reached above-mentioned purpose of design, its concrete measure is that original valve rod is transformed, the stem lower portion diameter is little than top, forms a thin neck bottom, and thin neck underpart is a conical surface, be reduced to the upper diameter size gradually, simultaneously, change original O-ring seal into two metal linings, a lining cooperates with valve stem slides, a lining is positioned at the air chamber center of top, tightly cooperates with the thin neck conical surface of valve rod.Its working principle is valve rod to the downward pressure of loam cake to be sunk, and breaks away from lining, makes the air pump air outlet flue constitute passage and works, and removes the power to loam cake, and spring moves upward valve rod, the conical surface and metal lining closure on the valve rod.

Take the foot-operated air horn valve of said structure durable in use, using effect is good, its life-span is 2～3 times of standard valve, has reduced the trouble that automobile is frequently changed the air horn valve, simultaneously, has saved the cost of changing valve greatly.In a single day this foot-operated air horn valve comes into operation, and will improve the economic benefit and the working efficiency of automobile industry surely.

This foot-operated air horn valve is applicable to various air horns.

Further specify the utility model below in conjunction with accompanying drawing:

The foot-operated air horn assembly structure figure of Fig. 1.

This valve is made of loam cake 1, valve rod 2, lining 3,4, spring 5, O-ring seal 6, lower cover 7, valve body 8, air pump 9, air outlet flue 10 and air chamber 11, valve rod 2 lower diameter are little than upper diameter, form a thin neck section, there are a conical surface 12 and step 13 in the thin neck section end, metal lining 3 is slidingly matched with valve rod 2, metal lining 4 is fixed on air chamber 11 center of top, tightly cooperates with the conical surface on the valve rod.When external force presses downwards when covering 1, valve rod 2 sinks, and breaks away from air pump and air outlet flue formation passage, air horn work with lining 4; Remove the external force of loam cake, spring 5 makes valve rod upwards, and the conical surface 12 and lining 4 closures form an operation cycle.

During installation, joint is loaded onto valve body and be wrenched, again tracheae is overlapped upper connection, and note the air inlet sign of arrow indication.

This foot-operated air horn valve is applicable to 8kg/m ²Step on use with foot in 50 ℃ of interior air conduits.

Claims

1, foot-operated air horn switch, comprise loam cake (1), lower cover (7), spring (5), O-ring seal (6), valve body (8), air pump (9), air outlet flue (10) and air chamber (11), air pump (9) and air outlet flue (11) are all logical with air chamber (10), O-ring seal (6) is positioned between lower cover (7) and the valve body (8), make between valve body and the lower cover and seal, it is characterized in that the metal lining (3 that a valve rod (2) arranged in the switch valve body and cooperate with valve stem slides, 4), valve rod (2) lower diameter is little than upper diameter, form a thin neck, there are a conical surface (12) and step (13) in the valve rod lower end, the conical surface (11) tightly cooperates with lining (4), spring (5) is positioned between valve rod (2) lower end step (13) and the lower cover (7), valve rod is upwards pushed up, between valve rod (2) and the loam cake (1) a little gap is arranged.