CN201858402U - Bifunctional valve - Google Patents

Abstract

The utility model discloses a bifunctional valve. The front part of an air cylinder is provided with a block position bulge. The wall of the air cylinder at the front end of the block position bulge is provided with a block position conductive pin sliding slot, and the outer wall of the air cylinder at the rear end of the block position bulge is provided with external threads. A locking nut is fixed on the rear end wall of the block position bulge through an insulating ring. A block position conductive pin is fixed at the front end of a piston rod, and a conductive contact is fixed on the inner wall of the air cylinder at the front end of the block position conductive pin. A pressure spring is arranged in the air cylinder at the rear end of the piston rod. A screw cap is screwed on the external threads of the air cylinder, and the perforated rear end wall of an open hole tightly compresses the pressure spring. The bifunctional valve can be used for air inflation and send alarms when a tire is lack of air, has high sensitivity and simple structure and is convenient to install.

Description

Difunctional valve mouth

Technical field

The utility model relates to a kind of valve for vehicle tire mouth.

Background technique

The tire of vehicle is often because the gas or prick a variety of causes such as tire and deficency of self jogging, under-pressure tyre is difficult for being found, not only can influence tyre life if drive the vehicle driving of under-pressure tyre, and blow out easily or a lateral deviation is moved and traffic accident is taken place, therefore, need the deficency state of running check tire, waste time and energy, if in case carelessness can produce beyond thought ill effect.If just find deficency on the way, can not inflate again, then need re-type.So, in order to find the tyre inner pressure deficiency early, and taking the counter measure as soon as possible, people are provided with some warning devices that can point out the driver to note in time, and common have a mechanical tire air-leaking alarming device.It is a basis: when tube air pressure was not enough, its wheel shaft height was also along with reduction, and when dropping to a certain degree, pulley touches ground, and causes the device of warning.This device deficiency is: the distance on pulley and ground is smaller, when the out-of-flatness of ground, is easily collided and damages by the ground convex parts; Simultaneously, also be easy to produce the false alarm phenomenon, and volume is bigger, is difficult for installing, so it is not applied in large area.And the indispensable device that valve cock is inflated when being under-pressure tyre, existing valve cock is the valve of air inlet, does not have the deficency warning function.

Summary of the invention

The purpose of this utility model solves the above-mentioned problems in the prior art exactly, and providing a kind of can inflate, and can report to the police when under-pressure tyre again, and is simple in structure, easy for installation, do not influenced by ground, also is difficult for producing the difunctional valve mouth of false alarm.

For finishing above-mentioned purpose, technical solution of the present utility model is: a kind of difunctional valve mouth, and it comprises valve inside, cylinder, piston, piston rod, locking nut, pressure spring and the nut of being made up of plunger, small piston, spring, inside cylinder and core cap; There is the gear projection front portion of cylinder, has gear conduction nail sliding-groove on the cylinder wall of this gear projection front end, on the cylinder outer wall of its rear end outside thread is arranged, and locking nut is fixed on the gear projection aft bulkhead by insulated ring; Gear conduction nail is fixed on the front end of piston rod, and valve inside is through in the piston rod; Be fixed with conductive contact on the cylinder inner wall of gear conduction nail front end; Pressure spring places in the cylinder of piston rod rear end, and nut is tightened on the outside thread of cylinder, the aft bulkhead compaction pressure spring of its perforate; Gear conduction nail and conductive contact are drawn lead respectively.

The utility model is installed on the valve cock mounting hole of automobile tire, and two leads are connected on the warning circuit.Like this, turn on nut, take down pressure spring, the utility model is exactly a common valve cock, can be tyre inflation; Load onto pressure spring, tightening nuts is but a under-pressure tyre Alarm contactor.When have a flat tire, when atmospheric pressure is not enough, the pressure of pressure spring is during greater than the leakage pressure of tire, the pressure of pressure spring impels piston rod to promote forward, makes gear conduction nail contact warning circuit closure, warning reminding driver's under-pressure tyre with conductive contact; Otherwise when tire pressure pressure during greater than the pressure of the pressure spring that is provided with, piston moves round about, and gear conduction nail is disconnected with conductive contact, plays the automatic control effect.In a word, the utility model can be inflated, and can report to the police when under-pressure tyre again, and it is highly sensitive, and is simple in structure, easy for installation.

Description of drawings

Fig. 1 is a sectional structure schematic representation of the present utility model.

Embodiment

As shown in Figure 1, present embodiment comprise by plunger 4, small piston 12, spring 6, inside cylinder 5 and cover 7 valve insides of forming, cylinder 3,, piston 18, piston rod 10, locking nut 8, pressure spring 2 and nut 1.There is gear projection 14 front portion of cylinder 3, has the sliding-groove 17 of gear conduction nail 11 on cylinder 3 walls of these gear projection 14 front ends, on cylinder 3 outer walls of its rear end outside thread is arranged, and locking nut 8 is fixed on gear projection 14 aft bulkheads by insulated ring 9.Gear conduction nail 11 is fixed on the front end of piston rod 10, and valve inside is through in the piston rod 10.Be fixed with conductive contact 13 on the cylinder inner wall of gear conduction nail 11 front ends.Pressure spring 2 places in the cylinder 3 of piston rod 10 rear ends, and nut 1 is tightened on the outside thread of cylinder 3, the aft bulkhead compaction pressure spring 2 of its perforate.Gear conduction nail 11 and conductive contact 13 are drawn lead 15,16 respectively.

Certainly; the utility model also has other various embodiments; under the situation of the utility model spirit and essence; those of ordinary skill in the art can make corresponding change and distortion according to the utility model; but these corresponding changes and distortion all should belong to the improvement of equivalent technologies, belong to the protection domain of the utility model claim.

Claims (1)

1. difunctional valve mouth, it comprises the valve inside of being made up of plunger, small piston, spring, inside cylinder and core cap, it is characterized in that: it also comprises cylinder, piston, piston rod, locking nut, pressure spring and nut; There is the gear projection front portion of cylinder, has gear conduction nail sliding-groove on the cylinder wall of this gear projection front end, on the cylinder outer wall of its rear end outside thread is arranged, and locking nut is fixed on the gear projection aft bulkhead by insulated ring; Gear conduction nail is fixed on the front end of piston rod, and valve inside is through in the piston rod; Be fixed with conductive contact on the cylinder inner wall of gear conduction nail front end; Pressure spring places in the cylinder of piston rod rear end, and nut is tightened on the outside thread of cylinder, the aft bulkhead compaction pressure spring of its perforate; Gear conduction nail and conductive contact are drawn lead respectively.

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