CN2714842Y

CN2714842Y - Inflator construction with a pressure gauge

Info

Publication number: CN2714842Y
Application number: CN 200420087766
Authority: CN
Inventors: 林基寿
Original assignee: 吴树木
Priority date: 2004-08-17
Filing date: 2004-08-17
Publication date: 2005-08-03
Anticipated expiration: 2014-08-17

Abstract

The utility model discloses an inflator structure with a pressure gauge, which mainly solves the defects that the installing position of a pressure gauge of a public-known inflator is not proper and the public-known inflator is not easy to look and read and is unsafe. The utility model has the structure that a main barrel and an auxiliary barrel which are formed into a barrel body of the inflator are formed by the method of integral injection molding, wherein, the main barrel and the auxiliary barrel are connected in parallel with each other and are communicated with each other by a through hole, and the pressure gauge is installed on the position in the top part of the auxiliary barrel. The compressed air can pass through the through hole to enter the auxiliary barrel from the main barrel in the operation, and namely, the inflating air pressure can be continuously displayed on the pressure gauge. Because the pressure gauge is very close to operators, so the tyre pressure can be seen and read very clearly, and the utility model can prevent a tyre from being inflated too much air or too little air to influence the driving safety; furthermore, because the installing position of the pressure gauge is very proper, the utility model is without explosion generating danger.

Description

The manometric pump structure of tool

Technical field

The utility model relates to a kind of pump, refers to the manometric pump structure of a kind of tool especially.

Background technique

Known general vertical type pump, the variation in moulding multiterminal, real too numerous to enumerate, nothing more than utilizing compression so that air is squeezed in the object, make and be inflated condition, and be to make the inflation in this object be kept certain force value, avoid build-up of pressure excessive with foot phenomenon not, cause can't bear to use or impelling object can't bear the facts that pressure produces explosion, usually habitual pump has still can install the pressure gauge that shows tire pressure with in the above in addition, can see at any time when inflating and read pressure index, and its structure is roughly as Fig. 1, shown in Figure 2, mainly appropriate location is installed a pressure gauge 11 on pump 10, and really practicability is not poor, can read tire pressure for momentarily seeing, according to reason saying not to have too big defective, and actually this is not so, if cooperate the actual situation of using again, carefully strictly inquire into again to get up to be not difficult and find wherein still to have existed greatly to wait improved defective, that is:

One, as shown in Figure 1, pump 10 that should be habitual is because pressure gauge 11 is arranged on the tip position place of operating stem 12, therefore inevitably this pressure gauge 11 will the upper and lower displacement that carries out along with the pressing operation compressed action of this operating stem 12, in other words, what this pressure gauge 11 was presented when inflating is movable state forever, be to obtain transfixion, the result certainly will cause the operator to see the difficulty of reading pressure index, though even especially attentively can also see numeral occasionally, but correctness is still doubtful on its numerical fact of seeing, can only be made for reference to using.

They are two years old, as shown in Figure 2, these habitual pump 10 systems are set as the kenel of pipe-in-pipe, wherein the outer rim of pipe 13 in these pressure gauge 11 sheathed being positioned at, and be installed in the apical margin position of outer tube 14, because the area that this pressure gauge 11 is covered is greater than the internal diameter area (A of pipe 13 in this ₂＞A ₁), according to pascal's principle F ₁=PA ₁, and F ₂=PA ₂, that is F ₁=F ₂(A ₁/ A ₂), therefore be not difficult to learn F ₂＞F ₁Therefore, the suffered active force of this pressure gauge 11 is bigger, often has the situation that explosion damages and produces, and causes the misgivings of Security and practicability at last.

Therefore, at above serious defective,, be the target that a utmost point waits to lay siege to improvement in fact in today of asking desirable, practical and progress.

In view of this, the utility model creator thinks funiculus through detailed, and the long-pending experience of being engaged in various pumps and the research and development of relevant air pressure assembly equipment for many years, several times manufactures experimently and studies, and develops the manometric pump of a kind of tool eventually and constructs.

Novel content

The utility model primary and foremost purpose is to provide a kind of tool manometric pump structure, it is with suitable near of pressure gauge mounting distance operator, to help clearly to see the inflation pressure index of reading object, and really can avoid causing tyre inflation to influence the safety of driving a vehicle too much or very little.

Of the present utility model time a purpose is to provide a kind of tool manometric pump structure, because the position of this pressure gauge installing is very good, and the gas load that is born is less, so the danger of the stressed generation explosion of unlikely build-up of pressure table helps to promote the Security of use.

According to the manometric pump structure of a kind of tool provided by the utility model, comprising:

One cylindrical shell;

One operating stem utilizes the piston of its front end setting to be installed in slidably in this cylindrical shell;

One steam outlet pipe, the one end is installed in the appropriate location of this cylindrical shell, and the other end is engaged on the object of waiting to inflate;

It is characterized in that this cylindrical shell is made into the kenel of main tube and secondary tube in the mode of one ejection formation, wherein should master tube and secondary be connected in parallel to each other together, and interconnect with a through hole, this operating stem is installed in this master tin slidably; One pressure gauge then is installed on the tip position of this pair tube.

In view of the above, in case operational pump action, compressed gas can enter in this pair tube by this through hole from this master's tube, then enter in the object of waiting to inflate via this steam outlet pipe again, on this pressure gauge, can constantly demonstrate the inner gas pressure of this object so, because this pressure gauge is apart from suitable near of operator, thereby pressure index can be seen and read fully aware ofly, really can avoid causing too much or the very little safety of influence driving of object inflation.

For further understanding the utility model is technology, means and other the effect that achieves the above object and adopted, now lift that a preferable possible embodiments and conjunction with figs. describe in detail as after, believe the above-mentioned purpose of the utility model, feature and other advantage, when being goed deep into and concrete understanding thus.

Description of drawings

Fig. 1: the three-dimensional appearance schematic representation of known pump.

Fig. 2: the part three-dimensional appearance schematic representation of known another kenel pump.

Fig. 3: stereo appearance figure of the present utility model.

Fig. 4: longitudinal sectional view of the present utility model.

Embodiment

At first please cooperate and consult shown in each figure, the manometric pump structure of a kind of tool provided by the utility model, it is combined by institutes such as a cylindrical shell 2, an operating stem 3 and gas outlets 4 substantially; Wherein:

This cylindrical shell 2, mode with the one ejection formation is made into the kenel with main tube 21 and one a secondary tube 22, wherein this master's tube 21 and secondary tube 22 are connected in parallel to each other together, and interconnect with a through hole 23, internal diameter that it should be noted that this master tube 21 for big, and more is equiped with an one-way valve 24 at this master 21 bottom appropriate location than the internal diameter of this pair tube 22, so that compressed gas can only admission advance, and unlikely returning back to stayed; In addition, 5 installing lockings of a pressure gauge can be provided as and see the pressure value of reading the object to be inflatable body on the tip position of this pair tube 22;

This operating stem 3 can utilize the set piston of its front end 31 to be installed in slidably in the main tube 21 of this cylindrical shell 2, to move by set handle 32 operational pumps of the other end;

This steam outlet pipe 4 utilizes an end to be installed in secondary tube 22 appropriate locations of this cylindrical shell 2, the other end then visual use need be to be engaged on the object to be inflated;

The above is each the correlation position of each constituent components assembling of the utility model and the general introduction of structure so.

Secondly, employ principle for of the present utility model manipulating, shown in each figure, in case the operation object (for example, tire etc.) inflate action, compressed gas can enter in this pair tube 22 by this through hole 23 from this master tube 21, then enter in the object to be inflated via this gas outlet 4 again, on this pressure gauge 5, can constantly demonstrate the inner gas pressure of this object so, because this pressure gauge 5 is apart from suitable near of operator, pressure index can be seen and read fully aware ofly, really can avoid causing the object inflation to influence the safety of driving a vehicle too much or very little; A lot of greatly than the internal diameter area of this pair tube 22 as for this main tube 21 owing to the internal diameter area, therefore according to pascal's principle F=PA, the gas pressure that this pressure gauge 5 is afforded is unlikely excessive, so this pressure gauge 5 can avoid producing the danger that explosion damages, in order to the Security of raising use, and then prolong the life-span of using.

In sum, the disclosed structure of the utility model creation embodiment, it will help suitable near of pressure gauge mounting distance operator to clearly to see the inflation pressure index of reading object, really can avoid causing too much or the very little safety of influence driving of tyre inflation; Moreover because the position of this pressure gauge installing is very good, and the gas load that is born is less, so danger of the stressed generation explosion of unlikely build-up of pressure table, help to promote the Security of use in fact, so the utilizability that the utlity model has on the industry should be unquestionable; In addition, the disclosed structure of the utility model creation embodiment is not seen in publication before the application, and also not public use has the as above fact of effect enhancement again in addition, therefore, the utlity model has novelty and progressive, proposes novel patent application then in accordance with the law.

Claims

1, the manometric pump structure of a kind of tool comprises:

One cylindrical shell;

One operating stem is installed in this cylindrical shell slidably by the set piston of its front end;

One steam outlet pipe, the one end is installed in the appropriate location of this cylindrical shell, and the other end is engaged on the object to be inflated;

It is characterized in that: this cylindrical shell constitutes the kenel of main tube and secondary tube in integrated mode, wherein should master tube and secondary be connected in parallel to each other together, and interconnect with a through hole, this operating stem is installed in this master tin slidably; One pressure gauge then is installed on the tip position of this pair tube.