CN2407152Y

CN2407152Y - Air pump with pressure meter

Info

Publication number: CN2407152Y
Application number: CN 00203213
Authority: CN
Inventors: 黄德隆
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-01-28
Filing date: 2000-01-28
Publication date: 2000-11-22
Anticipated expiration: 2010-01-28

Abstract

The utility model relates to an inflator with a pressure meter. The inflator comprises an inflator body 1, a piston component 2, a shaft pipe 3, a handle 4, an air pipe 5 and an air nozzle 6. The utility model is characterized in that the handle is provided with a pressure gauge 7 which can reflect the pressure in a tyre; the pressure gauge is connected with a cylinder 8 which is arranged in the handle; the cylinder is connected with the shaft pipe; the lower part of the shaft pipe is connected with the piston component; the lower part of the piston component is connected with a one-way valve 10 through a rubber pipe 9; the air nozzle 6 is composed of an air nozzle main body 61, a sealing ring 62, an air nozzle inner plug 63, an air nozzle needle 64, a rubber sleeve 65, a pressing handle 66 and an air nozzle cover 67. The utility model can accurately measure the pressure in the tyre and increase inflating efficiency in the process of inflating.

Description

But the pump of measuring wheel tire internal air pressure

The utility model relates to a kind of pump, but particularly relates to a kind of pump that can accurately reflect the measuring wheel tire internal air pressure of pressure of tire.

The pump of bicycle and other small-sized vehicle is known by people, and its basic structure comprises a cylindrical shell, and central siphon is housed in the cylindrical shell, and central siphon top links to each other with handle, and piston assembly is equipped with in its underpart, and tracheae is equipped with in the cylindrical shell bottom, and the tracheae end is connected with valve.Traditional pump is not owing to establish the barometric surveying device, thereby can't accurately measure the air pressure in the tire, and people can only constantly go pressure testing with hand by tire when inflating, promptly waste time and energy, and can make the air pressure that charges in the tire too high or too low again.

But the purpose of this utility model is to provide a kind of pump of measuring wheel tire internal air pressure, so that accurately measure the air pressure in the tire in the process of inflating, and improves charging efficiency.

For achieving the above object, but the utility model provides a kind of pump of measuring wheel tire internal air pressure, this pump comprises cylindrical shell 1, is contained in piston assembly 2, central siphon 3, handle 4, tracheae 5 and valve 6 in the cylindrical shell, it is characterized in that, the pressure gauge 7 that can reflect the tire internal air pressure is housed on described handle, and this pressure gauge links to each other with cylinder 8 in being contained in handle, and cylinder then links to each other with central siphon, the central siphon lower end links to each other with piston assembly, and the piston assembly bottom is connected with one-way valve 10 by rubber pipe 9; Described valve 6 by fill in 63 within it seal ring 62 of valve main body 61 and dress, the valve, valve pin 64, rubber sleeve 65 and the pressure handle 66 and the gas nozzle cap 67 that are contained in valve main body two ends constitute.

Described pressure gauge comprises transparent scale sheet 71, indicating hand component 72 and pinion and rack 73, and wherein the transparent scale sheet is contained on the handle and covers, and indicating hand component is contained in the handle, and pinion and rack links to each other with cylinder and indicating hand component respectively.

Described indicating hand component 72 comprises second tooth bar 721, pointer 722 and slideway 723, and wherein pointer is contained in an end end of second tooth bar, and second tooth bar places in the flute profile slideway, and slideway then is fixed in cylinder 8 sides top.

Described pinion and rack 73 comprises first tooth bar 731, piston 732, first gear 733 and second gear 734, wherein the piston and first tooth bar are contained in the cylinder 8, and first tooth bar stretch out cylinder outer and with first this engagement of gear, second gear that is contained on same with first gear then is meshed with second tooth bar 721.

Described piston assembly 2 comprises piston 21, is contained in the spring 22 on piston top, the leather cup 23 that links to each other with piston and the catch 24 that is contained in the leather cup bottom.

Described one-way valve 10 has a valve body 11, has inlet hole 111 and return-air hole 1121 on the valve body, and valve block 12 and windage post 13 are housed in the valve body.

According to technique scheme, how the utility model is inflating the problem that can accurately reflect the tire internal air pressure simultaneously if having solved.Owing on handle, be provided with pressure gauge, and in inflator, be provided with one-way valve, the gas that is promoted downwards to be produced by piston assembly when inflating enters in the tire through one-way valve, tracheae and valve, gas in the tire then returns in the cylinder of handle through the return-air hole of one-way valve, and promotion pressure gauge action, tyre inner pressure is reflected by pressure gauge, thereby in the process of inflating, just can understand the pressure condition in the tire at any time, and can reach needed pressure rapidly and accurately, therefore just can quantitatively control, and improve greatly and inflated efficient the process of inflating.The utility model makes also that to the improvement of valve and other part operation is more flexible, and performance is more reliable.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is that handle of the present utility model is with the bottom exploded sketch.

Fig. 3 is handle and pressure gauge part exploded sketch.

Fig. 4 is the gas nozzle structure sectional view.

Referring to Fig. 1, but the pump of measuring wheel tire internal air pressure of the present utility model comprises cylindrical shell 1, piston assembly 2, central siphon 3, handle 4, tracheae 5 and valve 6.Main points of the present utility model are that pressure gauge 7 is housed on handle 4, its structure as shown in Figure 3, it comprises transparent scale sheet 71, indicating hand component 72 and pinion and rack 73, wherein the transparent scale sheet is made of graduated flake 711 and eyeglass 712, it is contained on the handle and covers.Indicating hand component 72 comprises second tooth bar 721, pointer 722 and slideway 723, and wherein pointer is contained in an end end of second tooth bar, and second tooth bar places in the horizontal flute profile slideway 723, can move horizontally along slideway, and slideway then is fixed in cylinder 8 sides top.Pinion and rack comprises first tooth bar 731, piston 732, first gear 733 and second gear 734, wherein piston is a leather cup shape piston, it is contained in the cylinder by inlet one end, first tooth bar, one end places in the cylinder 8, its the other end stretches out outside the cylinder and with first gear 733 and meshes, second gear 734 and first gear are contained on the same axle that is fixed on the handle, second gear then with place slideway 723 in second tooth bar 721 be meshed.Indicating hand component 72 and pinion and rack 73 all are contained in the handle.Described cylinder 8 horizontal are fixed in the handle, its entry end bottom is threaded with the central siphon upper end, the central siphon lower end then links to each other with piston assembly 2, this piston assembly structure as shown in Figure 2, it comprises piston 21, spring 22, leather cup 23 and catch 24, and its medi-spring is contained in piston 21 tops, and the piston upper end is threaded with the central siphon lower end, the piston lower end is fixed with leather cup 23 by nut, and catch 24 is equipped with in the leather cup bottom.The piston assembly bottom is connected with rubber pipe 9, and the rubber pipe lower end is threaded with the return-air short tube 112 of one-way valve 10 upper-end surfaces.Described one-way valve 10 has a valve body 11, has inlet hole 111 and return-air hole 1121 on the valve body, and valve block 12 and windage post 13 are housed in the valve body.Wherein have center hole on the windage post, and cut out the plane 131 that two return-airs are used on its cylinder.Above-mentioned central siphon, piston assembly, and one-way valve all be contained in the cylindrical shell 1, the top of the cylindrical shell loam cake 101 that has been threaded, its underpart is threaded with base 102.The utility model has also been made improvement to valve, gas nozzle structure after the improvement as shown in Figure 4, it by fill in 63 in valve main body 61, seal ring 62, the valve, valve pin 64, rubber sleeve 65, pressure handle 66 and gas nozzle cap 67 constitute, wherein plug 63, valve pin 64, rubber sleeve 65 are contained in the valve main body successively in the valve, seal ring 62 is enclosed within the valve beyond the Great Wall, pressure handle 66 is articulated in an end of valve main body, and its connecting end end is cam-like, and cam portion is pressed against in the valve beyond the Great Wall.67 of gas nozzle caps cover at the valve main body the other end.During use, valve is aimed at valve, depress pressure handle 66 as the direction of arrow among the figure then, the cam of pressure handle front end promotes inwardly compression of plug in the valve, thereby compresses valve, and seal ring 62 works the gas leakage effect that prevents simultaneously.

Working principle of the present utility model can be described as follows in conjunction with Fig. 2, Fig. 3: during pump work, depress handle 4, promoting central siphon 3 moves downward, driving the piston 21 and the leather cup 23 that are contained in the central siphon end simultaneously moves downward, the air pressure that pipe is interior is to the bottom, inlet hole 111 through one-way valve backs down valve block 12, enters in the tire through windage post 13, tracheae 5 and valve 6 again.At this moment, the gas in the tire then returns through valve 6, tracheae 5, and the windage post both sides in one-way valve 10 and return-air hole 1121, rubber pipe 9, piston assembly 2, central siphon 3 return in the cylinder 8 in the handle.Under the gas pressure effect, first tooth bar 731 moves horizontally in the promotion cylinder, drives first gear 733,734 rotations of second gear simultaneously, and second gear drives second tooth bar again and moves horizontally, the pointer that is arranged on the tooth bar is slided together, thereby indicate the air pressure of this moment.

Claims

But 1, a kind of pump of measuring wheel tire internal air pressure, comprise cylindrical shell (1), be contained in piston assembly (2), central siphon (3), handle (4), tracheae (5) and valve (6) in the cylindrical shell, it is characterized in that, the pressure gauge (7) that can reflect the tire internal air pressure is housed on described handle, this pressure gauge cylinder (8) interior with being contained in handle links to each other, cylinder then links to each other with central siphon, and the central siphon lower end links to each other with piston assembly, and the piston assembly bottom is connected with one-way valve (10) by rubber pipe (9); Described valve (6) is by valve main body (61) and the interior pressure handle (66) and gas nozzle cap (67) formation of filling in (63), valve pin (64), rubber sleeve (65) and being contained in valve main body two ends of dress seal ring (62), valve within it.
But 2, the pump of measuring wheel tire internal air pressure according to claim 1, it is characterized in that, described pressure gauge comprises transparent scale sheet (71), indicating hand component (72) and pinion and rack (73), wherein the transparent scale sheet is contained on the handle and covers, indicating hand component is contained in the handle, and pinion and rack links to each other with cylinder and indicating hand component respectively.
But 3, the pump of measuring wheel tire internal air pressure according to claim 2, it is characterized in that, described indicating hand component (72) comprises second tooth bar (721), pointer (722) and slideway (723), wherein pointer is contained in an end end of second tooth bar, second tooth bar places in the flute profile slideway, and slideway then is fixed in cylinder (8) side top.
But 4, the pump of measuring wheel tire internal air pressure according to claim 2, it is characterized in that, described pinion and rack (73) comprises first tooth bar (731), piston (732), first gear (733) and second gear (734), wherein the piston and first tooth bar are contained in the cylinder (8), and first tooth bar stretch out cylinder outer and with first this engagement of gear, second gear that is contained on same with first gear then is meshed with second tooth bar (721).
But 5, the pump of measuring wheel tire internal air pressure according to claim 1, it is characterized in that described piston assembly (2) comprises piston (21), is contained in the spring (22) on piston top, the leather cup (23) that links to each other with piston and the catch (24) that is contained in the leather cup bottom.
6, but the pump of measuring wheel tire internal air pressure according to claim 1 is characterized in that, described one-way valve (10) has a valve body (11), has inlet hole (111) and return-air hole (1121) on the valve body, and valve block (12) and windage post (13) are housed in the valve body.