TWM450624U - Inner shrinkage pipe type air pump with pressure gauge - Google Patents

Description

Retractable tube pump with pressure gauge

This creation is about a pump, especially a shrink-tube pump with a pressure gauge.

The use of bicycles has always been the simplest and most traditional means of transportation for human beings. It has the functions of convenience, energy-free, pollution-free, sports and leisure, especially in recent years, with the rising trend of sports and the increasing emphasis on leisure life quality. It makes bicycles widely loved and used by modern people.

When the bicycle tire is leaked or puncture repaired, the tire must be inflated by the pump. The early use of the pump is a large pump, which is bulky and has better pumping efficiency, but also makes it more occupied after use. Large storage space, and excessive weight also lead to inconvenience, usually only applicable to specific places, such as in the home, in the car shop, therefore, the manufacturer has designed a small pump that can be fixed on the bicycle and carried with the car. This kind of small inflator has the advantages of light weight and easy portability, and is widely loved and accepted by bicycle riders. However, the fly in the ointment is that this type of small pump does not have a pressure gauge, so it must stop at the time of pumping. After pressing the tire and checking whether the tire pressure is sufficient, the pumping operation is continued, which not only has troubles in operation, but also does not know whether the pressure in the tire has reached the normal standard.

Therefore, some operators have set up a pressure gauge on the pump for this problem, but the pressure gauge is usually added to the outside of the body of the pump, which not only looks awkward on the exterior, but also easily hinders the pumping work, and allows Pump up The volume of the cylinder becomes large and the trouble and inconvenience of carrying are increased.

In view of the shortcomings of the above-mentioned small-sized inflators with pressure gauges, the creators have launched the creations after a variety of discussions and trials, and many revisions and improvements.

The present invention provides a shrink tube type air pump with a pressure gauge, comprising: a pump body and a shrink tube assembly, the pump body comprising a hollow tubular cylinder, a set of heads disposed outside the front end of the cylinder And a movable tubular sleeve outside the cylinder, the rear end opening of the cylinder is provided with a one-way valve, the inner tube assembly is movably disposed in the cylinder, and can be retracted into the cylinder. And extending from the inside of the cylinder, the inner tube assembly comprises a hose, a nozzle joint connected to the front end of the hose, and a pressure gauge connected to the rear end of the hose, the pressure gauge The utility model is disposed in a hollow tubular pressure measuring tube with a viewing window or a whole transparent guide rod, and a spring, an end sleeve and an airtight ring are arranged between the guiding rod and the pressure measuring tube; Therefore, when in use, the inner tube assembly is stretched from the inside of the cylinder, and the gas bar moves back and forth to move the gas into the cylinder, and through the passage and the hose of the inner tube guide rod, the gas is self-contained. The mouth connector output is inflated.

The main purpose of this creation is that the pressure gauge is connected to the rear end of the hose of the inner tube assembly. When the pressure gauge is placed, the pressure gauge does not protrude outside the body of the pump, and the pump can be light and easy to carry. And when the pump is inflated, the pressure gauge will not affect the pumping operation, and the pressure value can be clearly displayed, and the utility model has better practicability.

For the rest of the drawings, the preferred embodiment of the present invention will be described in detail as follows:

As shown in the first, second and third figures, this creation has a tube-type inflator with a pressure gauge, which includes:

a pumping body 1 comprising a hollow tubular cylinder 11, a set of heads 12 disposed outside the front end of the cylinder 11, and a hollow tubular airing rod 13 having a movable sliding sleeve outside the cylinder 11 The rear end opening of the cylinder 11 is provided with a one-way valve 14. The front end of the air cylinder 11 is provided with a pipe plug 15. The rear end of the air pumping rod 13 is provided with an end plug 131 and a grip 132. The inner edge of the pipe plug 15 is provided with a The convex portion 151 is blocked.

a shrink tube assembly 2, the inner tube assembly 2 is movably disposed in the cylinder 11, and can be retracted into the cylinder 11 for collection and can be used for stretching from the inside of the cylinder 11, the inner tube assembly 2 includes a hose 21, a nozzle joint 22 connected to the front end of the hose 21, and a pressure gauge 23 connected to the rear end of the hose 21. The front end of the hose 21 is provided with a nozzle joint 22 sets of sleeves 211, the rear end of the hose 21 is provided with a connector 212, which can be used to engage with the tire nozzle, and when the inner tube assembly 2 is retracted into the cylinder 11, the The nozzle joint 22 is slidably sleeved on the inner edge of the pipe body 15 of the pump body 1 and is left outside the pipe plug 15 to facilitate the extension of the inner tube assembly 2 from the inside of the cylinder 11 by the nozzle joint 22 The pressure gauge 23 is disposed in a hollow tubular pressure measuring tube 232 by a guide rod 231 of the internal passage 2311, and a spring 233, an end sleeve 234 is disposed between the guiding rod 231 and the pressure measuring tube 232. An airtight ring 235, an extended diameter end 2312 is disposed at the rear end of the guiding rod 231 for the rear end of the pressure measuring tube 232 to be snapped, and a leakage stop is arranged on the periphery of the end 2312. The member 2313 is an O-ring. The stop member 2313 is in contact with the leakage preventing member 2313 and can be airtightly slidably mounted on the inner wall of the cylinder 11. The front end of the guiding rod 231 is provided with a joint portion 2314 and a side tube. The wall is provided with at least one through hole 2315 (the opposite side of the through hole 2315 is opposite), and the joint portion 2314 is assembled with the connecting end 212 of the rear end of the hose 21 to fix the pressure measuring tube 232 to the end 2312 of the guiding rod 231. Between the connector 212 of the hose 21, the pressure measuring tube 232 is entirely transparent or has a viewing window, and is provided with a pressure value scale 2321, and one end of the spring 233 abuts the end 2312 of the guiding rod 231. The other end of the end sleeve 234, the airtight ring 235 is fitted on the end sleeve 234, and the airtight ring 235 is in contact with the airtight ring 235 and can be airtightly slid to the inner wall of the pressure measuring tube 232, so that the guiding rod 231 and the pressure measuring tube A ventilating and contracting air chamber 236 is formed on the front side of the airtight ring 235, and the air chamber 236 communicates with the inner passage 2311 of the guide rod 231 through the front end through hole 2315 of the guide rod 231.

When in use, as shown in the fourth, fifth, sixth and seventh figures, the inner tube assembly 2 is stretched from the inside of the cylinder 11 by the nozzle joint 22, so that the nozzle joint 22 of the inner tube assembly 2 is soft. The tube 21 and the pressure gauge 23 extend out of the outside of the pump body 1, and are restrained by the end portion 2312 of the rear end of the guide rod 231 of the pressure gauge 23 against the blocking convex portion 151 of the inner edge of the pipe body 15 of the pump body 1 to form a limit. , the inner tube assembly 2 is prevented from being completely detached from the pump body 1 , and the air nozzle joint 22 is engaged with the bicycle tire nozzle 3 , and the head 12 of the pump body 1 is held by one hand, and the pump body 1 is held by the other hand. The grip 132 of the pumping rod 13 drives the pumping rod 13 to reciprocate back and forth with respect to the cylinder 11, and pushes the air through the check valve 14 of the rear end opening of the cylinder 11 into the cylinder 11, and prevents the hit by the check valve 14 The gas entering the cylinder 11 is reversely flowed out, so that the air continues to enter the cylinder 11, and the passage 2311 and the hose 21 of the guide rod 231 of the pressure gauge 23 of the inner tube 2 are self-contained. The nozzle joint 22 is poured into the nozzle 3 to inflate the tire.

And during the inflation process, the air pressure in the passage 2311 of the cylinder 11, the hose 21 and the pressure gauge 23 guide rod 231 will increase synchronously with the air pressure inside the tire, and the air in the passage 2311 of the pressure gauge 23 guide 231 at this time The gas passage 235 and the end sleeve 234 are displaced in the direction of the spring 233 by the through hole 2315 at the front end of the guide rod 231 and flow into the gas chamber 236 formed between the guide rod 231 and the pressure measuring tube 232 on the front side of the airtight ring 235. When the spring 233 is compressed and the air chamber 236 is expanded, the position of the airtight ring 235 or the end sleeve 234 can be passed through the pressure value scale 2321 on the pressure measuring tube 232, so that the air compressor can clearly see the current air pressure value in the tire at any time. In order to stop the pumping immediately when the air pressure reaches the standard, the pressure in the tire is in compliance with the standard, so as to avoid the situation of insufficient or excessive inflation.

According to the structure of the above specific embodiment, the following benefits can be obtained: the inner tube of the pressure gauge is filled with a pressure gauge 23, and the pressure gauge 23 is connected to the rear end of the hose 21 of the inner tube assembly 2, The inner tube assembly 2 can be retracted into the cylinder 11 for collection, so that the pressure gauge 23 is entirely hidden in the pump body 1 and can be quickly and directly pulled out during use, thereby ensuring the light and easy carrying effect of the pump, and When the air is blown, the pressure gauge 23 does not affect the air pumping operation, and the pressure value can be clearly displayed, which is convenient for the airer to observe and interpret, and has better practicability.

1‧‧‧ pump body

11‧‧‧Cylinder

12‧‧‧ head

13‧‧‧Inflating rod

131‧‧‧End plug

132‧‧‧ grip

14‧‧‧ check valve

15‧‧‧ pipe plug

151‧‧‧stop convex

2‧‧‧retractor assembly

21‧‧‧Hose

211‧‧‧ sleeve

212‧‧‧Connecting head

22‧‧‧Air nozzle joint

23‧‧‧ Pressure gauge

231‧‧‧guides

2311‧‧‧ channel

2312‧‧‧End

2313‧‧‧Too

2314‧‧‧Intersection

2315‧‧‧through hole

232‧‧‧pressure tube

2321‧‧‧pressure value scale

233‧‧ ‧ spring

234‧‧‧ End kit

235‧‧‧ airtight ring

236‧‧ ‧ air chamber

3‧‧‧ gas nozzle

The first picture: is a three-dimensional exploded view of the creation.

The second picture: a three-dimensional combination of the creation.

The third picture: the section of the creation of this creation and a partial enlargement.

The fourth picture is a sectional view of the state of use of the present creation.

The fifth picture is a schematic diagram of the pumping action of this creation.

The sixth picture: another schematic diagram of the pumping action of this creation.

Figure 7: This is a schematic diagram showing the pressure value of the creation pressure gauge.

1‧‧‧ pump body

12‧‧‧ head

13‧‧‧Inflating rod

131‧‧‧End plug

132‧‧‧ grip

15‧‧‧ pipe plug

2‧‧‧retractor assembly

21‧‧‧Hose

211‧‧‧ sleeve

212‧‧‧Connecting head

22‧‧‧Air nozzle joint

23‧‧‧ Pressure gauge

231‧‧‧guides

2312‧‧‧End

2313‧‧‧Too

2314‧‧‧Intersection

2315‧‧‧through hole

232‧‧‧pressure tube

2321‧‧‧pressure value scale

233‧‧ ‧ spring

234‧‧‧ End kit

235‧‧‧ airtight ring

Claims (7)

An inner tube type inflation pump with a pressure gauge, comprising: a pump body comprising a hollow tubular cylinder, a set of heads disposed outside the front end of the cylinder, and a movable sliding sleeve at the cylinder An outer hollow tubular airing rod, the rear end opening of the cylinder is provided with a one-way valve; and a inner tube assembly is movably disposed in the cylinder, and can be retracted into the cylinder for collection and can be pulled out from the cylinder For extension, the inner tube assembly comprises a hose, a nozzle joint connected to the front end of the hose, and a pressure gauge connected to the rear end of the hose, the pressure gauge is provided by an internal passage The guide rod is disposed in a hollow tubular pressure measuring tube, and a spring, an end sleeve and an airtight ring are disposed between the guiding rod and the pressure measuring tube, and an enlarged diameter end is provided at the rear end of the guiding rod for the pressure measuring tube The back end sleeve is snapped, and a stop member is sleeved around the end of the end, and the leakage stop member can be airtightly slid to the inner wall of the cylinder, and the front end side wall of the guide rod is provided with at least one side wall a through hole, the pressure measuring tube is fixed between the end of the guiding rod and the hose, and the pressure measuring tube is provided with a pressure value One end of the spring abuts against the end of the guide rod, and the other end is abutted against the end sleeve. The airtight ring sleeve is sleeved on the end sleeve, and the airtight ring is in contact with the airtight ring and can be airtightly slid to the inner tube of the piezometer tube. The wall forms an expandable and contractible air chamber between the guide rod and the pressure measuring tube on the front side of the airtight ring, and the air chamber communicates with the inner passage of the guide rod through the through hole at the front end of the guide rod. The inner tube of the pressure gauge according to the first aspect of the invention, wherein the front end opening of the cylinder is provided with a pipe plug, and the inner edge of the pipe plug is provided with a inner shrinking pipe assembly from the cylinder. When the inner part is stretched outward, the end of the rear end of the pressure gauge guide rod is caught by the limit protrusion. The inner tube type air pump with a pressure gauge according to the first aspect of the invention, wherein the front end of the hose of the inner tube assembly is provided with a sleeve for connecting with the nozzle joint, and the hose is The connecting end is provided with a connecting end, and the front end of the guiding rod of the pressure gauge is provided with an engaging portion for assembling with the rear end connecting end of the hose. The inner tube type air pump with a pressure gauge according to the first aspect of the invention, wherein the air nozzle joint is sleeved on the inner edge of the air tube body plug, and is left at a side of the tube plug for convenience. The inner tube assembly is stretched outwardly from the cylinder by the nozzle joint. The inner tube type air pump with a pressure gauge according to claim 1, wherein the inner tube assembly has a section of the gas nozzle joint when the inner tube assembly is retracted into the cylinder. The outside of the pipe plug is provided for facilitating the extension of the inner tube assembly from the inside of the cylinder by the nozzle joint. The inner tube of the pressure gauge according to the first aspect of the invention, wherein the leakage member of the guide rod end of the pressure gauge is an O-ring. The inner tube type air pump with a pressure gauge according to the first aspect of the invention, wherein the pressure measuring tube of the pressure gauge is entirely transparent or has a viewing window.