CN2105742U

CN2105742U - Composite air pressure switch

Info

Publication number: CN2105742U
Application number: CN 91226533
Authority: CN
Inventors: 马良浩
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-10-11
Filing date: 1991-10-11
Publication date: 1992-05-27

Abstract

The utility model relates to a composite air pressure switch used for controlling the air pressure horns of motor vehicles or non motor vehicles, comprising an air pressure transforming switch and an air compressing switch. The air pressure transforming switch comprises an air inlet valve, a pressure-reducing valve, a base, an air outlet tube and a handle that has a reset spring, and the air compressing switch comprises a handle, a reset spring, a base and an air outlet tube. The utility model can control the air pressure horn to make low, middle or high sounds, which can satisfy various vehicles running on highways or in towns to blow horns.

Description

Composite air pressure switch

The utility model relates to a kind of combination baroswitch that is used for controller motor vehicle or non power driven vehicle air pressure loudspeaker.

At present, China has the vehicle of pneumatic brake that vapour-pressure type loudspeaker and electromagnetic type mediant trumpet all are housed, the middle use of travelling in road running and city respectively.Two cover loudspeaker devices had both improved cost, had increased the difficulty of maintenance again; Some motor scooters then do not have storage battery device, and only the electricity that is sent when generator speed is higher just can make the normal sounding of loudspeaker, otherwise loudspeaker are sounding normally, and this has just increased the difficulty of travelling in populous location; Especially hand tractor and some non power driven vehicles do not have loudspeaker device, and it is very dangerous to travel.

The purpose of this utility model provides a kind of vapour-pressure type loudspeaker of controlling and sends middle and high sound respectively, and at the combination baroswitch that does not have to send under the situation of source of the gas bass.

The utility model is made of the air pressure Variable-voltage switch and the switch of calming the anger.The air pressure Variable-voltage switch comprises gas admittance valve, pedestal, reduction valve, escape pipe and has the handle of back-moving spring.Gas admittance valve one end links to each other with the motor vehicle air drum, and the other end is fixedlyed connected with pedestal.Insert in the gas admittance valve end of handlebar, is the size of control air inflow, and this end outer surface has shallow and narrow airslide, and the next-door neighbour has dark and wide airslide again thereupon.Piston also is equipped with at the middle part of this handlebar.The switch of calming the anger comprises handle, back-moving spring, pedestal and escape pipe, the pedestal cast solid of its pedestal and air pressure Variable-voltage switch.Be convenient maintenance, these two pedestals also can be distinguished manufacturing separately.Piston with holes is equipped with in the calm the anger end of switch knob bar, is provided with retaining valve near piston towards the one side of back-moving spring.

The utility model can be controlled the air pressure loudspeaker respectively and send basic, normal, high sound, thereby satisfy the requirement that vehicle travels and blows a trumpet in highway and cities and towns, and reduced by a cover electromagnetic type mediant trumpet device, also be applicable to motor vehicles or non power driven vehicle that those do not have pneumatic shuttle, to guarantee traffic safety.The utility model also has simple and compact for structure, dependable performance, and volume is little, and is in light weight, and consumption gas is few, installs and uses and advantage such as easy to maintenance.

Accompanying drawing is a structural representation of the present utility model.

The gas admittance valve of air pressure Variable-voltage switch is made of air admission hole 10, valve body spring 11 and ball valve 12, fixedlys connected with pedestal 23 screw threads.Reduction valve 15,17 also adopts screw thread to fixedly connected with pedestal 23.Size by adjusting the spring force in the reduction valve is to reach the purpose of decompression.High pitch reduction valve 15 is 1 kilograms per centimeter at air pressure ²Work when above, middle pitch reduction valve 17 is 0.5 kilograms per centimeter at air pressure ²Work during the left and right sides.The end of air pressure Variable-voltage switch handle 21 bars has shallow and narrow airslide 13 and adjacent with it dark and wide airslide 14, and its middle part also is provided with piston 20.Airslide 13 is wide to be 1.2 to 1.8 millimeters, and length is 5 to 10 millimeters; Airslide 14 is wide to be 2 to 2.8 millimeters, and length is 10 to 20 millimeters.For the sake of assurance, when loudspeaker were not worked, the end of handle 21 bars did not contact with ball valve 12.During loudspeaker work, should guarantee can not cause when handle 21 is pressed onto the lowest limit position ball valve 12 to block air admission hole 10, so the passage of gas admittance valve ball valve 12 should have enough length.Bleeder port 19 is to be used for preventing gas admittance valve ball valve 12 in case gas leakage makes gas efflux through this hole, and does not cause loudspeaker 8 to yowl.For the gas of avoiding the air pressure Variable-voltage switch flows into the switch of calming the anger, be provided with retaining valve 7.Piston with holes 2 is equipped with in the calm the anger end of switch knob 1 bar, and its one side towards back-moving spring 6 is provided with retaining valve 5.For strengthening sealing, piston 2 is equipped with O-ring seal 4.

Pressurized air and air pressure are arranged in the 1-8 kilograms per centimeter on automobile ²During scope, press air pressure Variable-voltage switch handle 21, make piston 20 block bleeder port 19, push ball valve 12 simultaneously open, so from the pressurized air of automobile air drum through air admission hole 10, the passage of gas admittance valve ball valve 12 and airslide 13 enter in the air pressure Variable-voltage switch thorax, and the at this moment adjusted reduction valve 17 that bears the air pressure size well is under the effect of thorax internal gas pressure, and compression spring is pushed the valve of reduction valve 17 open and reduced pressure.Enter escape pipe 16 after the pressurized air decompression, press loudspeaker 8, make loudspeaker send middle pitch,, then make longtime call of horn if it is motionless to pin handle 21 by sleeve pipe 9 and retaining valve 7 air inlets.After unclamping air pressure Variable-voltage switch handle 21, under the effect of back-moving spring 18, make handle get back to original position.And ball valve 12 homing under the effect of spring 11 causes gas admittance valve to be closed, and gas circuit is cut off, and loudspeaker do not ring.When the needs loudspeaker send high pitch, as long as shift air pressure Variable-voltage switch handle 21 onto extreme position, from the pressurized air of automobile air drum through air admission hole 10, the passage of gas admittance valve ball valve 12 and airslide 14 enter in the air pressure Variable-voltage switch thorax, after reduction valve 17,15 reduces pressure simultaneously, pressurized air is again through escape pipe 16, and sleeve pipe 19 and retaining valve 7 enter air pressure loudspeaker 8, make it to send high pitch.Pressurized air on automobile is lower than 1 kilograms per centimeter ²Or when not having air pressure, only need press the handle 1 on the switch of calming the anger, thereby promote to be fixed on the piston 2 on the handlebar, and under the effect of back-moving spring 6, make retaining valve 5 be close to piston 2, the closed piston hole, meanwhile retaining valve 5 is also closed, along with pressing down of handle 1, the air in the switch thorax of calming the anger is constantly compressed, cause air pressure loudspeaker 8 to send bass at last.After the release handle 1, piston 2 is got back to original position under the effect of back-moving spring 6, and retaining valve 5 is opened thereupon, and outside air enters in the switch thorax of calming the anger by hole 25 and piston hole 3, for prepare next time.

Claims

1, a kind of combination baroswitch that is used for controller motor vehicle or non power driven vehicle air pressure loudspeaker 8, it is characterized in that this combination baroswitch is made of the air pressure Variable-voltage switch and the switch of calming the anger, the air pressure Variable-voltage switch comprises gas admittance valve, pedestal 23, the handle 21 that has back-moving spring 18, reduction valve 15,17 and escape pipe 16, gas admittance valve one end is connected with the motor vehicle air drum, the other end is fixedlyed connected with pedestal 23, insert in the gas admittance valve end of handle 21 bars, and have an airslide 13,14, the middle part of handle 21 bars is provided with piston 20, the switch of calming the anger comprises handle 1, back-moving spring 6, pedestal 22 and escape pipe 24, piston with holes 2 is equipped with in the end of handle 1 bar, and its one side towards back-moving spring 6 is provided with retaining valve 5.

2, combination baroswitch according to claim 1 is characterized in that pedestal 22 and pedestal 23 can be cast to become one, and also can distinguish separately and make, and pedestal 22,23 all has hole 25,19.

Ball valve was not blocked air admission hole 10 when 3, combination baroswitch according to claim 1 and 2, the passage length that it is characterized in that gas admittance valve ball valve 12 should guarantee that air pressure Variable-voltage switch handle 21 is pressed onto the lowest limit position.

4, combination baroswitch according to claim 1 and 2, the width that it is characterized in that airslide 13 are 1.2 to 1.8 millimeters, and length is 5 to 10 millimeters, and the width of airslide 14 is 2 to 2.8 millimeters, and length is 10 to 20 millimeters.