CN2153482Y

CN2153482Y - Preselection pressure tyre inflating gun

Info

Publication number: CN2153482Y
Application number: CN 93208722
Authority: CN
Inventors: 蒙坚峰
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-02
Filing date: 1993-04-02
Publication date: 1994-01-19
Anticipated expiration: 2003-04-02

Abstract

The utility model discloses an inflating gun for a motor vehicle tire which can preselect the inflating pressure. The inflating gun for a motor vehicle tire is composed of a handle, an air duct, a valve body, a valve stem, a membrane, a mechanical spring and a pressure regulating knob. The bulge loop and the sealing cushion are added on the valve stem. The barometric scale ruler, the scoping loop and the slip ring linked with the valve stem are arranged outside the valve body. Thus the preselection pressure is more accurate and reliable. The inflating gun for a motor vehicle tire has the advantages of simple structure and easy use, and the inflating gun for a motor vehicle tire can effectively help the tire extend the service life.

Description

Preselection pressure tyre inflating gun

The utility model relates to a kind of inflation of tire instrument.

The automobile tyre inflatable tool that present people use always is the hand-held charge gun that has handle and two mouth pneumatic heads.When using this charge gun to inflation of tire, can't directly judge and inflate the height of pressing in the tire, need to measure the tire internal gas pressure with one surveying the gas chi in addition, this makes inflator feel trouble, thereby inflator usually judges with the experience of oneself whether the tire internal gas pressure reaches requirement, easy like this cause the inflation excessive or underinflation, influence the service life of tire, for this reason, someone had once designed a kind of inflatable tool with the air-pressure gauge repacking, but the volume of this instrument is bigger, used inconvenience, and damage easily, can't set up the desire inflation in advance and press.

Task of the present utility model is will design a kind of can the adjusting in advance to set desire inflation pressure, aerated rifle simple in structure, easy to use.

Task of the present utility model adopts following measure to finish: it comprises the handle, the ventilation flue that have air flue and joint, also have main valve body and pay valve body, be provided with valve rod that has a vertical air channel at least and the diaphragm that is fixed on valve rod one end in the main valve body, also have spring in the outside of paying the valve body interior diaphragm, also be provided with adjusting pressuring knob in a pair valve body outer end.The air of sending here from air pump through handle air flue and the groove of valve rod enter, the pressure that overcomes spring makes the diaphragm skew, open the pore that was covered by diaphragm originally on the main valve body, air can be sent in the tire through ventilation flue's (be preferably in and connect a pneumatic head on the ventilation flue again).Regulate adjusting pressuring knob, initial tension of spring is changed, can change the intake pressure that diaphragm skew pore is opened, charge gun is put on the air by the pre-determined air pressure of inflator.For the air pressure that makes preliminary election is more accurate, be preferably in and pay the outer place of valve body and a scale that baroscale is arranged axially is set along it near adjusting pressuring knob, read the atmospheric pressure value of preliminary election according to the relative position of adjusting pressuring knob and scale.If make a circle sign ring again on adjusting pressuring knob, reading will be more accurate.But SELF CL gas circuit when making intake pressure greater than the preliminary election atmospheric pressure value, can a bulge loop be set at the other end (end of no diaphragm) of valve rod, on the end face that bulge loop contacts with main valve body the packing seal made from materials such as rubber or flexible plastics is housed, so that when intake pressure surpasses preset value, valve rod moves, make the packing seal sealing valve rod hole of bulge loop end, gas circuit is blocked, continue to raise in order to avoid charge into the air pressure of tire.Find out more observably for the ease of inflator whether the air pressure that charges into has reached preset value, a sliding cup that links with valve rod also can be set in paying valve body, outside paying valve body, slip ring is set, the pin and sliding cup interlock of slip ring by passing the slotted eye of paying valve body, pay to make again on the valve body and show ring, along with moving of valve rod, sliding cup, slip ring also and then move, when showing that ring is when expose the end of slip ring, the expression inflation is pressed and has been reached preset value, at this moment the bulge loop packing seal of valve rod blocks valve rod hole just, can stop inflation.Cleaner for making this charge gun of flowing through charge into the air of tire, can set up screen holder and filter screen at the cavity place between handle and the main valve body, another effect of screen holder is can limit inflation to finish the stroke that the back valve rod is return, to prevent diaphragm excessive deformation under the effect of spring.

Because the utility model does not use air-pressure gauge, though have multiple air pressure to show and qualification mechanism, but structure is also uncomplicated, and volume is also little, uses but very light and handy, convenient, particularly before inflation, can set up in advance fill the specified atmospheric pressure value of tire, after being charged to this value air pressure, mechanism can realize cutting off automatically gas circuit, self-locking pressure limiting, in order to avoid cause inflation excessive, the demonstration ring of paying simultaneously on the valve body can show that inflation ends.Baroscale scale of the present utility model near and along the axial setting of adjusting pressuring knob, and all there is scale on the two sides, thereby easily observe all the time gas filedly from all directions, and to be convenient to the left hand and right hand operation and to read scale value, it is the utility that motor vehicle driver and repairman extremely welcome.

Describe below in conjunction with embodiment and accompanying drawing.

Fig. 1 is the cutaway view according to the utility model design-calculated the most basic a kind of preliminary election PNEUMATIC TIRES charge gun, and Fig. 2 has the pressure limiting bulge loop and shows the cutaway view of the preliminary election PNEUMATIC TIRES charge gun of ring according to the utility model design-calculated.

With reference to accompanying drawing 1, handle 1 has joint 11 and air flue 12, the valve rod 3 of slip is housed by the center of the affixed main valve body 2 of screw thread and handle 1, also have on the main valve body 2 pore 21 and with ventilation flue's 4 bonded assembly joints 22, there is at least one groove 31 that allows air pass through at the position that section surface cooperates with valve rod hole 23 in the valve rod 3, the left end of valve rod 3 is equipped with diaphragm 5, the left end of main valve body 2 also is connected to pays valve body 6, left end is equipped with adjusting pressuring knob 7, spring 8 is loaded between adjusting pressuring knob 7 and the diaphragm pressing plate 51, pressure and the gas filed pressure of preliminary election that the number of turns that is screwed into according to adjusting pressuring knob can corresponding change spring.

In order to make the preliminary election inflation pressure convenient reliable, can outside paying valve body 6,, and on adjusting pressuring knob 7, make sign ring 71 with reference to shown in Figure 2 along an axial affixed baroscale scale 9 of adjusting pressuring knob 7.Preferably this scale 9 is arranged between ventilation flue 4 and the adjusting pressuring knob 7, and all there is same scale on the two sides of scale, so that all can read numerical value from the two sides.For the ease of when inflation pressure reaches preset value, valve rod 3 can more effectively cut off gas circuit, limits inflation pressure, at the right-hand member of valve rod 3 bulge loop 32 is set, and places packing seal 33 on the left side of bulge loop.When inflation pressure reached preset value, the right side of packing seal 33 and valve rod hole 23 was adjacent to and blocks gas circuit.For the ease of feeling that more intuitively packing seal 33 just blocks the gas circuit of valve rod hole 23, pay 6 li of valve bodies also be provided with one can with the sliding cup 61 of valve rod 3 interlocks, pay valve body 6 outsides a slip ring 62 is set, passing the slotted eye 64 of paying valve body 6 with 1 to 3 piece of pin 63 will slide cup 61 and couple together with sliding cup 62, pay valve body 6 outside face slip ring positions and also make demonstration ring 65(colour circle or groove ring), before the inflation, earlier choose required inflation pressure in advance by the scale value of scale 9 with adjusting pressuring knob 7, this moment is under the effect of spring 8, sliding cup 61, diaphragm 5, valve rod 3 all is pressed towards and moves to right, slip ring 62 also moves to right and will show that ring 65 covers in simultaneously, rising along with inflation pressure, sliding cup 61, diaphragm 5, valve rod 3, slip ring 62 is gradually to moving to left, when inflation pressure reaches preset value, the packing seal 33 of bulge loop 32 left ends of valve rod 3 contacts and gas circuit is blocked with valve rod hole 23 end faces just, the demonstration ring of paying simultaneously on the valve body 6 65 exposes, inflation pressure raises again, only can make valve rod bulge loop 32 press valve rod hole 23 end faces tighter, but can not make air continue to charge in the tire, at this moment, can close air pump or charge gun is taken off from tire, finish a gas replenishment process.For improving impurity such as gas filed quality, the airborne dust of filtering, screen holder 13 and filter screen 14 also can be installed by the cavity place between handle 1 and main valve body 2.Another effect of screen holder 13 is the right part of withstanding the valve rod that is shifted to the right to certain position, and the stroke that restriction valve rod 3 moves to right in case spring 8 excessively is out of shape diaphragm 5, shortens the life-span.The utility model is easy to use, and preliminary election, qualification inflation pressure can replace existing inflation of tire rifle and survey the gas chi accurately and reliably, for a kind of actv. instrument is provided the service life of improving tire.

Claims

1, a kind of inflation of tire rifle comprises the handle 1 and the ventilation flue 4 that have air flue 12, joint 11, it is characterized in that: also have main valve body 2, pay valve body 6, the valve rod 3 that has groove 31, diaphragm 5, spring 8 and be arranged at the adjusting pressuring knob 7 of paying valve body 6 ends.

2, by the described inflation of tire rifle of claim 1, it is characterized in that: outside paying valve body 6, axially also be provided with baroscale scale 9 along adjusting pressuring knob 7.

3, by claim 1 or 2 described inflation of tire rifles, it is characterized in that: the end at valve rod 3 no diaphragms has a bulge loop 32, and packing seal 33 is equipped with at the bulge loop place.

4, by the described inflation of tire rifle of claim 2, it is characterized in that: sign ring 71 is arranged on adjusting pressuring knob 7.

5, by claim 1 or 2 described inflation of tire rifles, it is characterized in that: in paying valve body 6, also has a sliding cup 61 that can link with valve rod 3, outside paying valve body 6, slip ring 62 is arranged, the pin 63 and sliding cup 61 interlocks of slip ring 62 by passing the slotted eye 64 of paying valve body 6 also has the ring of demonstration 65 paying valve body 6 outside face slip ring positions.

6, by the described inflation of tire rifle of claim 3, it is characterized in that, in paying valve body 6, also has a sliding cup 61 that can link with valve rod 3, outside paying valve body 6, slip ring 62 is arranged, the pin 63 and sliding cup 61 interlocks of slip ring 62 by passing the slotted eye 64 of paying valve body 6 also has the ring of demonstration 65 paying valve body 6 outside face slip ring positions.

7, by the described inflation of tire rifle of claim 5, it is characterized in that: the cavity place between handle 1 and main valve body 2 also has screen holder 13 and filter screen 14.

8, by the described inflation of tire rifle of claim 6, it is characterized in that: the cavity place between handle 1 and main valve body 2 also has screen holder 13 and filter screen 14.