TWI585297B - Built-in pressure gauge of the pump - Google Patents

Description

Built-in pressure gauge pump

The present invention relates to an inflator, and more particularly to an inflator of a built-in pressure gauge.

According to the popularity of bicycles, the accessories for bicycles have also developed rapidly. At present, there is a telescopic pump that is compact and easy to be fixed on bicycles, which is quite popular among users.

However, due to the miniaturization, the function of the portable retractable pump is limited to the inflation function. However, since the tire of the bicycle must pay attention to the air pressure of the inflation when inflating, so that the bicycle can be maintained in an optimal state of operation, a manufacturer has been developed to measure the air pressure at the same time. This kind of measurable air pressure pump is nothing more than adding a pressure gauge to the pump, but this method will increase the overall volume, resulting in a miniaturization, easy to carry the function is greatly reduced, and directly expose the pressure gauge On the pump, it will also lead to poor aesthetics, but it will be awkward and difficult to fix on a bicycle.

In view of this, in order to improve the prior art, the exposure of the pressure gauge of the conventional pump has an increase in the overall volume, resulting in a miniaturization, a convenient function for carrying, and a poor aesthetic appearance, which is abrupt and fixed on the bicycle. Therefore, the present invention provides a pump for a built-in pressure gauge, which mainly comprises: a gas nozzle joint having a gas injection chamber, a connection chamber and a An air guiding hole connecting the gas injection chamber and the connecting chamber, wherein the gas injection chamber is for inserting a gas nozzle; a built-in tube is transparent, has a head end, a tail end, and a joint end and the tail end In the middle section, the middle section has an activity chamber, the surface of the middle section has a scale value, and the head end is fixed in the connection chamber of the nozzle joint, and the head end has a pressure connected to the movable chamber a gas hole, a stop chamber and an air injection guide hole connecting the check chamber to an outer peripheral surface of the head end, the tail end having at least one gas injection hole communicating with the outer peripheral surface; and an inner tube being transparent, the inner hole The tubular sleeve is sleeved outside the inner tube, and one end is engaged with the connecting chamber of the air nozzle joint, and the other end of the inner cylinder has an air inlet hole; an outer tube is sleeved outside the inner tube and can be stressed Acting and axially reciprocating displacement relative to the inner cylinder; a pressure gauge is placed in the movable chamber of the built-in tube, and can be moved in the movable chamber; a check member, when the outer cylinder is pulled outward The check member is located in the anti-reverse chamber and is sealed against the gas injection guide hole to make the gas nozzle The gas enters the movable chamber through the pressure air hole to push the pressure gauge to be displaced, so that the user can see the relative position of the pressure gauge and the scale value, and the air pressure is determined when the outer tube is moved inward. When the anti-reverse member is separated from the anti-reverse chamber, the air inlet hole, the gas injection hole, the gas injection guide hole and the air guiding hole are in a communicating state to form a pair of air-filled inflation passages; thereby achieving reduction The overall volume, easy to carry, good aesthetic effect and easy to fix.

100‧‧‧Inflator for built-in pressure gauge

10‧‧‧Air nozzle joint

11‧‧‧ head shell

111‧‧‧Injection chamber

112‧‧‧Connection room

113‧‧‧ Air vents

12‧‧‧Injection unit

13‧‧‧Toggles

20‧‧‧ Built-in tube

21‧‧‧ head end

211‧‧‧ ring convex

212‧‧‧Volume vents

213‧‧‧ 逆逆室

214‧‧‧ gas injection guide hole

22‧‧‧End

221‧‧‧ gas injection hole

23‧‧‧ middle section

231‧‧‧Event Room

232‧‧‧ scale value

30‧‧‧Inner tube

31‧‧‧Air intake

40‧‧‧Outer tube

50‧‧‧ pressure gauge

51‧‧‧Base

511‧‧‧ Guide column

52‧‧‧ casing

521‧‧‧ Pointer

53‧‧‧ airtight parts

54‧‧‧ Spring

60‧‧‧Reversal parts

90‧‧‧ gas nozzle

The first figure is an exploded perspective view of a preferred embodiment of the present invention.

The second drawing is a perspective assembled view of the embodiment shown in the first figure.

The third figure is a schematic cross-sectional view of the embodiment shown in the first figure.

The fourth figure is a schematic view of the cross-sectional operation of the embodiment shown in the first figure.

The fifth drawing is a cross-sectional view and a partial enlarged view of the embodiment shown in the first figure.

The sixth drawing is a cross-sectional view and a partial enlarged view of the embodiment shown in the first figure.

In order to enable the reviewing committee to have a better understanding and recognition of the features and characteristics of the present invention, the following preferred embodiments are illustrated as follows: Referring to the first to sixth figures, a preferred embodiment of the present invention is preferred. The pump 100 of the built-in pressure gauge provided by the embodiment mainly comprises a nozzle joint 10, a built-in tube 20, an inner cylinder 30, an outer cylinder 40, a pressure gauge 50 and a check member 60. The gas nozzle joint 10 has a head shell 11, a press unit 12 and a trigger rod 13; the bottom end of the head shell 11 is recessed inwardly and has a gas injection chamber 111. The connecting portion 112 has a connecting chamber 112 extending inwardly from the side of the head casing 11. The air guiding chamber 111 and the connecting chamber 112 have a communicating air hole 113. The pressing unit 12 is disposed in the gas injection chamber 111. The trigger rod 13 is pivotally connected to the top end of the head shell 11 and can be reciprocated by an external force acting on a loose position to a pressing position. When the trigger rod 13 is in the loose position, No pressure is applied to the injection unit 12 to cause the injection unit 12 to perform a gas nozzle 90 that extends into the nozzle unit Released (as shown in the third figure), when the lever 13 is in the pressing position, the pressure is applied to the injection unit 12, so that the injection unit 12 is pressed against a nozzle 90 ( As shown in the fourth figure).

Referring to the first to fourth figures, the built-in tube 20 is transparent and defines a head end 21, a tail end 22 and a middle portion 23 connected between the head end 21 and the tail end 22, the middle section 23 The inside of the middle section 23 has a scale value 232. The outer circumference of the head end 21 has a ring protrusion 211. The head end 21 has a quantity connected to the movable chamber 231. The air pressure hole 212, a stop chamber 213, and an air injection guide hole 214 that communicates the back chamber 213 to the outer peripheral surface of the head end 21, the tail end 22 has a plurality of gas injection holes 221 communicating with the outer peripheral surface. The head end 21 of the inner tube 20 is placed in the connection chamber 112 of the nozzle joint 10.

Referring to the first to fourth figures, the inner cylinder 30 is transparent, and the inner cylinder 30 is sleeved outside the inner tube 20, and one end is screwed to the connection chamber 112 of the air nozzle joint 10 by threads. The inner cylinder 30 is fixedly engaged with the air nozzle joint 10, and the inner cylinder 30 abuts against the annular convex portion 211 of the inner tube 20, and the inner cylinder 20 is simultaneously pressed and fixed, and the inner cylinder 30 is simultaneously fixed. The other end has an air inlet 31.

Referring to the first to fourth figures, the outer cylinder 40 is sleeved outside the inner cylinder 30 and can be axially reciprocally displaced relative to the inner cylinder 30 by force.

Referring to the first to fourth figures, the pressure gauge 50 is placed in the movable chamber 231 of the built-in tube 20 and is movable 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 coupled into the movable chamber 231 adjacent to the tail end 22, and the base 51 faces the head end 21 A guide post 511 is protruded, and the sleeve 52 is sleeved on the guide post 511. The sleeve 52 has a pointer portion 521 at one end of the head end 21, and the airtight member 53 is sleeved on the sleeve. 52, the spring 54 is abutted between the base 51 and the sleeve 52 to provide an elastic release force of the sleeve 52.

Referring to the first to fifth figures, the check member 60 is placed in the back chamber 213 of the built-in tube 20 and is displaceable by an external force.

Therefore, the above is a description of the components of the pump 100 of the built-in pressure gauge and the assembly manner thereof according to a preferred embodiment of the present invention, and then the use characteristics thereof are as follows: when the present invention is to be used At the same time, the nozzle 90 of a tire is inserted into the injection chamber 111 of the nozzle joint 10 (as shown in the third figure), and the trigger 13 is pulled from the release position to the pressing position (eg, The fourth embodiment is shown to press the nozzle 90 by the injection unit 12 and to pull the outer cylinder 40 outward.

Then, the outer cylinder 40 is continuously retracted and retracted 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 flows into the inner portion through the gas injection hole 221. The inner circumferential surface of the cylinder 30 and the outer circumferential surface of the inner tube 20 are introduced into the gas injection guide hole 214, and then injected into the gas injection chamber 111 through the air guiding hole 113 to form an inflation passage. The gas nozzle 90 is inflated.

When the outer cylinder 40 is pushed inward (as shown in the fifth figure), the check member 60 is pushed away from the check chamber 213, so that the filling operation can be smoothly performed.

When the outer cylinder 40 is pulled outward (as shown in FIG. 6), the check member 60 is pushed into the anti-reverse chamber 213 and sealed against the gas injection guide hole 214 to prevent gas. It flows back into the outer cylinder 40. Moreover, the gas in the gas nozzle 90 will leak out through the pressure air hole 212 and enter the movable chamber 231 to push the sleeve 52 of the pressure gauge 50 to move. The movement amount of the sleeve 52 is resistant to gas. Depending on the spring force of the spring 54, the user can see through the transparent inner cylinder 30 and the inner tube 20 that the pointer portion 521 is located at the scale value 232 when the outer cylinder 40 is pulled outward. The gas pressure in the gas nozzle 90 can be easily known at this time.

In this way, the creation can not only achieve the effect of inflation, but also the pressure gauge 50 can let the user know the gas pressure in the gas nozzle 90, and achieve the pressure effect.

Moreover, since the pressure gauge 50 of the present invention adopts the built-in type, it does not increase the original volume, and is similar in appearance to the generally non-pressure gauge pump, so that the user can carry it conveniently. Moreover, the built-in pressure gauge 50 does not make the appearance too abrupt, and can make the creation of the creation on the bicycle, can have a stylish and smooth appearance to enhance the competitiveness in the market.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. All of the related art in the art will be equally changed according to the present invention. The scope of coverage.

100‧‧‧Inflator for built-in pressure gauge

10‧‧‧Air nozzle joint

11‧‧‧ head shell

111‧‧‧Injection chamber

112‧‧‧Connection room

12‧‧‧Injection unit

13‧‧‧Toggles

20‧‧‧ Built-in tube

21‧‧‧ head end

211‧‧‧ ring convex

22‧‧‧End

221‧‧‧ gas injection hole

23‧‧‧ middle section

232‧‧‧ scale value

30‧‧‧Inner tube

31‧‧‧Air intake

40‧‧‧Outer tube

50‧‧‧ pressure gauge

51‧‧‧Base

511‧‧‧ Guide column

52‧‧‧ casing

521‧‧‧ Pointer

53‧‧‧ airtight parts

54‧‧‧ Spring

60‧‧‧Reversal parts

Claims (5)

The utility model relates to a pump of a built-in pressure gauge, which mainly comprises: a gas nozzle joint, a gas injection chamber, a connection chamber and an air guiding hole connecting the gas injection chamber and the connection chamber, wherein the gas injection chamber is used for a gas nozzle is inserted; a built-in tube is transparent, has a head end, a tail end and a middle portion connected between the head end and the tail end, the middle portion of the middle portion has a movable chamber, and the surface of the middle portion has a scale The head end is fixed in the connection chamber of the air nozzle joint, and the head end has a pressure air hole connected to the movable chamber, a stop chamber and a connecting the back chamber to the outer periphery of the head end. a gas injection hole of the surface, the tail end having at least one gas injection hole communicating with the outer circumferential surface; an inner tube being transparent, the inner tube sleeve being sleeved outside the inner tube, and one end and a connection chamber with the gas nozzle joint Engaging, the other end of the inner cylinder has an air inlet hole; an outer cylinder is sleeved outside the inner cylinder and can be axially reciprocally displaced relative to the inner cylinder by a force; a pressure gauge is disposed The movable chamber of the built-in tube can be moved in the activity chamber; When the outer cylinder is pulled outward, the check member is located in the anti-reverse chamber, and is sealed against the gas injection guide hole, so that the gas in the air nozzle enters the movable chamber through the pressure air hole. To push the displacement of the pressure gauge so that the user can see the relative position of the pressure gauge and the scale value, and know the accumulated air pressure. When the outer cylinder is pushed inward, the check component is separated from the stop. The air inlet, the air injection hole, the air injection guide hole and the air guiding hole are connected to each other to form an air passage for inflating the air nozzle. The air pump of the built-in pressure gauge according to claim 1, wherein the air nozzle joint has a head shell, a press unit and a wrench; the gas injection chamber is from the bottom end of the head shell The inner recess is formed by extending inwardly from the side of the head shell, and the pressing unit is disposed in the gas injection chamber, and the trigger rod is pivotally connected to the head shell, and The external force acts on a retracting position to a reciprocating position, and when the lever is in the loose position, no pressure is applied to the injection unit. The pressure injection unit releases the air nozzle, and when the trigger rod is in the pressing position, the pressure is applied to the injection unit, so that the pressure injection unit presses the air nozzle. The air pump of the built-in pressure gauge according to the first aspect of the invention, wherein the outer peripheral ring of the head end of the inner tube protrudes with a ring convex portion, and the inner cylinder abuts against the annular convex portion of the inner tube And the built-in cylinder is pressed against the fixed. The pump of the built-in pressure gauge according to claim 1, wherein the inner cylinder and the nozzle joint are screwed together. The pump of the built-in pressure gauge according to claim 1, wherein the pressure gauge has a base, a sleeve, a gas seal and a spring, and the base is coupled to the movable chamber and adjacent to the pump a guiding post protruding toward the head end, the sleeve is sleeved on the guiding post, the sleeve has a pointer portion toward one end of the head end, and the airtight member is placed on the guiding sleeve The sleeve is abutted between the base and the sleeve to provide an elastic release force of the sleeve, and the gas of the nozzle pushes the sleeve to be displaced by the pointer portion at the scale value At any position, the gas size is known.