CN205533058U - Air pump with built-in pressure gauge - Google Patents

Abstract

An inflator with a built-in pressure gauge comprises an air nozzle joint, a built-in pipe, an inner cylinder, an outer cylinder, a pressure gauge and a non-return piece; the air tap connector is used for an air tap to extend into, the inner tube is transparent and has a scale value and is connected with the air tap connector, the inner tube is transparent and is sleeved outside the inner tube and is connected with the air tap connector, the outer tube is sleeved outside the inner tube and can be stressed to carry out axial reciprocating displacement relative to the inner tube, the pressure gauge is arranged in the inner tube and can move movably, when the outer tube is pulled outwards, the check piece seals an inflation channel for inflation, so that the gas in the air tap pushes the pressure gauge to move, a user can see the relative position of the pressure gauge and the scale value to know the air pressure, and when the outer tube is pushed inwards, the check piece is pushed away from the inflation channel to smoothly inflate the air tap; therefore, the inflator with the built-in pressure gauge can achieve the effects of reducing the volume and improving the appearance aesthetic feeling.

Description

Air pump with built-in pressure gauge

technical field

The utility model relates to an air pump, and more specifically refers to an air pump with a built-in pressure gauge.

Background technique

Because the ethos of riding a bicycle is in vogue, so the relevant accessories of the bicycle are also developed rapidly. At present, there is a telescopic pump that is miniaturized and convenient to be fixed on the bicycle, which is quite popular among users.

However, due to the miniaturization, the function of this portable telescopic pump is limited to the inflation function. However, since bicycle tires must pay attention to the air pressure when inflating them, so that the bicycle can be kept in an optimal running state, so at present, the industry has developed an air pump that can measure the air pressure at the same time. This kind of air pump that can measure air pressure is nothing more than adding a pressure gauge to the pump, but this method will increase the overall volume, resulting in greatly reduced miniaturization and portability, and the pressure gauge is directly exposed on the air pump. On the air pump, it will also cause poor aesthetics and appear abrupt, and it is also difficult to fix on the bicycle.

Utility model content

In view of this, the purpose of this utility model is to provide an inflator with a built-in pressure gauge, which can improve the prior art. The pressure gauge of the conventional inflator is exposed and will increase the overall volume, resulting in miniaturization and portability. The functions are greatly reduced, and the aesthetic effect is not good, it looks abrupt and it is not easy to fix on the bicycle.

For reaching above-mentioned purpose, the solution of the present utility model is:

An inflator with a built-in pressure gauge is characterized in that it includes:

An air nozzle joint has an air injection chamber, a connection chamber and an air guide hole connecting the air injection chamber and the connection chamber, and the air injection chamber is used for an air nozzle to extend into;

A built-in tube, which is transparent, has a head end, a tail end, and a middle section connected between the head end and the tail end. The middle section has a movable chamber inside, and the surface of the middle section has scale values. The head end It is fixed in the connecting chamber of the air nozzle joint, and the head end has a pressure measuring air hole connected to the movable chamber, a non-return chamber and an air injection guide connecting the non-return chamber to the outer peripheral surface of the head end. hole, the tail end has at least one gas injection hole connected to the outer peripheral surface; an inner cylinder is transparent, the inner cylinder is nested outside the built-in tube, and one end is connected with the connecting chamber of the air nozzle joint, and the inner cylinder is in addition One end has an air inlet;

an outer cylinder, nested outside the inner cylinder, capable of moving axially and reciprocally relative to the inner cylinder under force;

A pressure gauge, placed in the movable chamber of the built-in tube, can move and displace in the movable chamber;

A non-return part, when the outer cylinder is pulled outward, the non-return part is located in the non-return chamber, and is sealed against the gas injection guide hole, so that the gas in the gas nozzle enters the movable part through the pressure measuring hole In the chamber, the displacement of the pressure gauge is pushed, so that the user can see the relative position of the pressure gauge and the scale value, and know the air pressure. Outside the reverse capacity chamber, the air intake hole, the air injection hole, the air injection guide hole and the air guide hole are in communication to form a pair of gas nozzle inflation channels.

Further, the air nozzle joint has a head shell, an injection unit and a trigger lever; the gas injection chamber is formed by inwardly recessing the bottom end of the head shell, and the connection chamber is formed by inwardly recessing and extending from the head shell side. In this way, the pressure injection unit is set in the air injection chamber, the trigger lever is pivotally connected to the head shell, and can be pulled reciprocally from a relaxed position to a tightened position by external force, when the trigger lever When it is in the relaxed position, no pressure is applied to the injection unit, so that the injection unit releases the gas nozzle; when the trigger lever is in the tightened position, pressure is applied to the injection unit, so that The injection unit tightens the air nozzle.

Furthermore, a ring convex portion protrudes from the outer circumference of the head end of the built-in tube, and the inner tube is abutted against the ring convex portion of the built-in tube to press and fix the built-in tube.

Further, the inner cylinder and the air nozzle joint are screwed together with threads.

Further, the pressure gauge has a base, a sleeve, an airtight part and a spring, the base is combined in the movable chamber and is adjacent to the tail end, the base protrudes a guide column toward the head end, and the sleeve covers Placed on the guide post, the end of the sleeve facing the head end direction has a pointer portion, the airtight part is placed on the sleeve, and the spring abuts between the base and the sleeve to provide the sleeve As soon as the elastic release force is used, the gas in the gas nozzle will push the bushing to move, so that the pointer can be located at any position on the scale to know the size of the gas.

After adopting the above structure, when the outer cylinder is pulled outward, the non-return member is located in the non-return chamber and is sealed against the gas injection guide hole, so that the gas in the gas nozzle enters the movable part through the pressure measuring hole. In the chamber, the displacement of the pressure gauge is pushed, so that the user can see the relative position of the pressure gauge and the scale value, and know the air pressure. Inverting capacity outside, make the air intake hole, air injection hole, air injection guide hole and the air guide hole in a connected state to form a pair of air nozzle inflation channels; thereby reducing the overall volume, easy to carry, good aesthetic effect and Easy to fix and other effects. Because the pressure gauge of the utility model adopts a built-in type, the original volume will not be increased, and the appearance is the same as that of a general air pump without a pressure gauge, so that it is convenient for users to carry. Furthermore, the built-in pressure gauge will not be too obtrusive in appearance, but when the utility model is fixed on the bicycle, it can have a fashionable and smooth appearance, so as to enhance the competitiveness in the market.

Description of drawings

Fig. 1 is the three-dimensional exploded view of a preferred embodiment of the utility model;

Fig. 2 is the three-dimensional assembly diagram of the embodiment shown in Fig. 1;

Fig. 3 is the cross-sectional action schematic diagram of the embodiment shown in Fig. 1;

Fig. 4 is the cross-sectional action schematic diagram of the embodiment shown in Fig. 1;

Fig. 5 is the cross-sectional action and partially enlarged schematic diagram of the embodiment shown in Fig. 1;

FIG. 6 is a cross-sectional action and partially enlarged schematic diagram of the embodiment shown in FIG. 1 .

【Symbol Description】

Air pump with built-in pressure gauge 100 Air nozzle connector 10

Head shell 11 Gas injection chamber 111

Connection chamber 112 Air guide hole 113

Injection unit 12 Lever 13

Built-in tube 20 Head end 21

Ring convex part 211 Measuring air hole 212

Check chamber 213 Air injection guide hole 214

Tail end 22 Air injection hole 221

Middle Section 23 Activity Room 231

Scale value 232 Inner cylinder 30

Air intake hole 31 Outer cylinder 40

Pressure gauge 50 base 51

Guide post 511 Sleeve 52

pointer part 521 airtight member 53

Spring 54 Backstop 60

Air nozzle 90.

detailed description

In order to enable your review committee to have a further understanding and recognition of the features of the utility model and its characteristics, the following preferred embodiments are listed below and are described as follows in conjunction with the drawings:

Please refer to Fig. 1 to Fig. 6, an inflator 100 for a built-in pressure gauge provided by a preferred embodiment of the utility model mainly includes an air nozzle joint 10, a built-in pipe 20, an inner cylinder 30, An outer cylinder 40, a pressure gauge 50 and a check member 60, wherein:

Please refer to Fig. 1 to Fig. 4, the air nozzle joint 10 has a head shell 11, a pressure injection unit 12 and a trigger lever 13; There is a connecting chamber 112 extending inwardly from one side, and there is an air guide hole 113 communicating between the gas injection chamber 111 and the connecting chamber 112. It is pivotally connected to the top of the head shell 11, and can be pulled back and forth between a relaxed position and a tight position by an external force. When the trigger lever 13 is in the relaxed position, no pressure is exerted on the injection unit 12, so that the injection unit 12 releases a protruding air nozzle 90 (as shown in Figure 3), when the trigger lever 13 is in the tight position, it presses on the injection unit 12 to The injection unit 12 is pressed against an air nozzle 90 (as shown in FIG. 4 ).

Please refer to Fig. 1 to Fig. 4, this built-in tube 20 is transparent, can define a head end 21, a tail end 22 and a middle section 23 that is connected between this head end 21 and this tail end 22, the inside of this middle section 23 There is a movable chamber 231, the outer surface of the middle section 23 has a scale value 232, a ring protrusion 211 protrudes from the outer peripheral ring of the head end 21, and a pressure measuring hole connected to the movable chamber 231 is provided on the head end 21 212 , a non-reverse chamber 213 and a gas injection guide hole 214 connecting the non-reverse chamber 213 to the outer peripheral surface of the head end 21 , and the tail end 22 has a plurality of gas injection holes 221 connected to the outer peripheral surface. The head end 21 of the built-in tube 20 is placed in the connection chamber 112 of the air nozzle connector 10 .

Please refer to Fig. 1 to Fig. 4, the inner cylinder 30 is transparent, the inner cylinder 30 is nested outside the built-in tube 20, and one end is screwed with the connecting chamber 112 of the air nozzle joint 10, so that the The inner cylinder 30 is fixedly engaged with the air nozzle joint 10, and the inner cylinder 30 abuts against the ring protrusion 211 of the built-in pipe 20, and the built-in cylinder 20 is pressed and fixed at the same time. The other end of the inner cylinder 30 has a An air inlet 31.

Referring to FIGS. 1 to 4 , the outer cylinder 40 is nested outside the inner cylinder 30 , and can move axially and reciprocally relative to the inner cylinder 30 under force.

Please refer to FIG. 1 to FIG. 4 , the pressure gauge 50 is placed in the movable chamber 231 of the built-in tube 20 , and can move in the movable chamber 231 . The pressure gauge 50 has a base 51, a sleeve 52, an airtight member 53 and a spring 54. The base 51 is combined in the movable chamber 231 and is adjacent to the tail end 22. The base 51 protrudes toward the head end 21. A guide post 511 is extended, the sleeve 52 is placed on the guide post 511, the end of the sleeve 52 facing the direction of the head end 21 has a pointer portion 521, the airtight part 53 is placed on the sleeve 52, The spring 54 abuts between the base 51 and the sleeve 52 to provide an elastic release force for the sleeve 52 .

Please refer to FIG. 1 to FIG. 5 , the anti-reverse member 60 is placed in the anti-reverse chamber 213 of the built-in tube 20 and can be displaced by an external force.

Therefore, the above is the introduction of each component and its assembly method of a built-in pressure gauge pump 100 provided by a preferred embodiment of the present invention, and then its use characteristics are described as follows:

When wanting to use the utility model, the air nozzle 90 of a tire is extended toward the air injection chamber 111 of the air nozzle joint 10 (as shown in Figure 3 ), and the trigger lever 13 is pulled from the loose position to The pressing position (as shown in FIG. 4 ) is used to press the air nozzle 90 by the injection unit 12 and pull the outer cylinder 40 outward.

Then, the outer cylinder 40 is continuously moved back and forth inwardly and outwardly, so that the gas in the outer cylinder 40 can be introduced through the air inlet hole 31 of the inner cylinder 30, and then flow into the inner cylinder through the gas injection hole 221. Between the inner peripheral surface of the cylinder 30 and the outer peripheral surface of the built-in tube 20, it is introduced into the gas injection guide hole 214, and then injected into the gas injection chamber 111 through the air guide hole 113 to form an inflation channel for The gas nozzle 90 performs inflation.

When the outer cylinder 40 moves inward (as shown in FIG. 5 ), the non-reverse member 60 will be pushed away from the non-reverse chamber 213 , so that the operation of inflation can be carried out smoothly.

When the outer cylinder 40 is pulled outward (as shown in FIG. 6 ), the anti-reverse member 60 is pushed into the anti-reverse chamber 213 and sealed against the gas injection guide hole 214 to prevent gas backflow into the outer cylinder 40. Moreover, the gas in the gas nozzle 90 will leak out and enter into the movable chamber 231 through the pressure hole 212, so as to push the sleeve 52 of the manometer 50 to move, and the amount of movement of the sleeve 52 depends on the resistance of the gas. How much elastic force of the spring 54 depends, so when the outer cylinder 40 is pulled outward, the user can see which of the scale values 232 the pointer part 521 is located through the transparent inner cylinder 30 and the built-in tube 20 position, just can easily know the size of the gas pressure in the gas nozzle 90 at this moment.

In this way, the utility model can not only achieve the function of inflating air, but also can let the user know the gas pressure in the gas nozzle 90 through the pressure gauge 50, so as to achieve the effect of measuring pressure.

Moreover, since the pressure gauge 50 of the present invention is built-in, the original volume will not be increased, and the appearance is the same as that of a general pump without a pressure gauge, which is convenient for users to carry. Furthermore, the built-in pressure gauge 50 will not be too obtrusive in appearance, but when the utility model is fixed on the bicycle, it can have a fashionable and smooth appearance, so as to enhance the competitiveness in the market.

The disclosure above is only a preferred embodiment provided by the utility model, and is not intended to limit the scope of implementation of the utility model. All equivalent changes made by those skilled in the art according to the utility model should be It belongs to the scope covered by the utility model.

Claims (5)

1. A pump with a built-in pressure gauge, characterized in that it comprises: An air nozzle joint has an air injection chamber, a connection chamber and an air guide hole connecting the air injection chamber and the connection chamber, and the air injection chamber is used for an air nozzle to extend into; A built-in tube, which is transparent, has a head end, a tail end, and a middle section connected between the head end and the tail end. The middle section has a movable chamber inside, and the surface of the middle section has scale values. The head end It is fixed in the connecting chamber of the air nozzle joint, and the head end has a pressure measuring air hole connected to the movable chamber, a non-return chamber and an air injection guide connecting the non-return chamber to the outer peripheral surface of the head end. holes, the tail end has at least one gas injection hole communicating with the outer peripheral surface; An inner cylinder, which is transparent. The inner cylinder is sleeved outside the built-in pipe, and one end is connected with the connecting chamber of the air nozzle joint. The other end of the inner cylinder has an air inlet; An outer cylinder, nested outside the inner cylinder, moves axially and reciprocally relative to the inner cylinder under force; A pressure gauge, placed in the movable chamber of the built-in tube, and movable and displaced in the movable chamber; A non-return part, when the outer cylinder is pulled outward, the non-return part is located in the non-return chamber and is sealed against the gas injection guide hole, and the gas in the gas nozzle enters the movable container through the pressure measuring hole Indoor, push the displacement of the pressure gauge. When the outer cylinder moves inward, the non-return member is separated from the non-return chamber, so that the air inlet, gas injection hole, gas injection guide hole and the air guide hole are in a state of communication. Constitute a pair of gas nozzles inflated inflatable channels. 2. The inflator for a built-in pressure gauge as claimed in claim 1, characterized in that: the nozzle joint has a head shell, a pressure injection unit and a trigger lever; the gas injection chamber extends from the bottom end of the head shell to The connection chamber extends from the side of the head shell, the injection unit is set in the air injection chamber, the trigger lever is pivotally connected to the head shell, and can be subjected to external force Pull back and forth between a loose position and a tight position. When the pull lever is in the relaxed position, no pressure is applied to the injection unit, so that the injection unit releases the gas nozzle. When When the trigger lever is at the tightening position, it presses on the injection unit, so that the injection unit can tighten the air nozzle. 3. The inflator for built-in pressure gauge according to claim 1, characterized in that: the outer circumference of the head end of the built-in tube protrudes with a ring convex portion, and the inner tube abuts against the ring convex portion of the built-in tube , and the built-in cylinder is pressed against and fixed. 4. The air pump for a built-in pressure gauge according to claim 1, wherein the inner cylinder and the air nozzle joint are screwed together with threads. 5. The air pump with built-in pressure gauge according to claim 1, characterized in that: the pressure gauge has a base, a sleeve, an airtight part and a spring, and the base is combined in the movable chamber and adjacent to the At the tail end, the base protrudes toward the head end with a guide post, the bushing is placed on the guide post, the end of the bushing facing the head end has a pointer portion, and the airtight part is placed on the sleeve On the tube, the spring abuts between the base and the sleeve to provide an elastic release force for the sleeve, and the gas in the gas nozzle will push the sleeve to move, so that the pointer can be located at any scale value. Position, and know the size of the gas.