CN210178530U - Inflator and pressure relief structure thereof - Google Patents

Abstract

The utility model discloses an inflator and a pressure relief structure thereof, the pressure relief structure is arranged on the side wall of the top end of the inflator, and a perforation of the pressure relief structure is communicated with the inner cavity of the inflator; the pressure relief structure comprises a sleeve body, and the side wall of the inner cavity of the sleeve body is provided with a through hole; the bottom surface of the inner cavity of the sleeve body is provided with a positioning sleeve, the positioning sleeve is sleeved with a movable sleeve which can seal or open the through hole, the side wall of the positioning sleeve is provided with a through hole, one end of the positioning sleeve is provided with a limiting ring, and the sealing ring body at the other end of the positioning sleeve is abutted against the inner side end of the movable sleeve; the inner side end of the channel of the movable sleeve is provided with a limiting bulge; the outer side wall of the movable sleeve is detachably connected with the inner cavity side wall of the sleeve body, and a sealing cover with a hole is fixed at the outer side end of the movable sleeve; when the outer side wall of the movable sleeve is not connected with the inner cavity side wall of the sleeve body, the through hole is communicated with the hole of the sealing cover through a gap and a through hole which are generated between the inner side end of the movable sleeve and the sealing ring body at the other end of the positioning sleeve, the cavity of the positioning sleeve and the channel of the movable sleeve in sequence. The structure makes the inflation light.

Description

Inflator and pressure relief structure thereof

Technical Field

The utility model belongs to the technical field of an inflater structure technique and specifically relates to an inflater and release structure thereof.

Background

Among the prior art, all set up the inflater at piston tube top with gas outlet and air inlet, this inflater all has gas to export from the gas outlet when piston tube is pulled up or is pushed down, therefore, it is when waiting to inflate the in-process and the object inside has had a large amount of gas (but the gas in the object is not enough), need continue inflating this moment again, consequently because the trachea of inflater links to each other with the object when pulling up the piston tube, consequently, there is certain atmospheric pressure on the inflation inlet of gas outlet or object, make the valve body of piston tube and piston tube bottom need the very big power just can be pulled up, thereby lead to inflating comparatively hard, influence performance.

Disclosure of Invention

The utility model aims at solving the not enough of above-mentioned technique and designing one kind make inflate comparatively light inflater and release structure thereof.

The pressure relief structure designed by the utility model comprises a sleeve body, wherein the side wall of the inner cavity of the sleeve body is provided with a through hole; the bottom surface of the inner cavity of the sleeve body is provided with a positioning sleeve, the positioning sleeve is sleeved with a movable sleeve which can seal or open the through hole, the side wall of the positioning sleeve is provided with a through hole, one end of the positioning sleeve is provided with a limiting ring, and the sealing ring body at the other end of the positioning sleeve is abutted against the inner side end of the movable sleeve; the inner side end of the channel of the movable sleeve is provided with a limiting bulge; the outer side wall of the movable sleeve is detachably connected with the inner cavity side wall of the sleeve body, and a sealing cover with a hole is fixed at the outer side end of the movable sleeve; when the outer side wall of the movable sleeve is not connected with the inner cavity side wall of the sleeve body, the through hole is communicated with the hole of the sealing cover through a gap and a through hole which are generated between the inner side end of the movable sleeve and the sealing ring body at the other end of the positioning sleeve, the cavity of the positioning sleeve and the channel of the movable sleeve in sequence.

Further preferably, the stop collar has a notch.

Further preferably, the positioning sleeve is fixed on the bottom surface of the inner cavity of the sleeve body.

Further preferably, the outer side wall of the movable sleeve is in threaded connection with the inner cavity side wall of the sleeve body.

Further preferably, the closing cap is fixed in the outside end of movable sleeve, and its concrete fixed knot constructs to be: the sealing cover comprises a ring body and a cover plate with a plurality of holes, and the cover plate is fixed at the outer side end of the inner hole of the ring body; the side wall of the inner hole of the ring body is provided with a clamping convex ring and a ring groove, the ring groove is positioned at the outer side end of the inner hole of the ring body, the clamping convex ring is positioned at the inner side end of the inner hole of the ring body, and the peripheral side of the cover plate is embedded into the ring groove; the side wall of an inner hole of the clamping convex ring is provided with a plurality of bulges to form a plurality of clamping grooves, and the outer side end of the movable sleeve is provided with a plurality of buckles; after the buckle correspondingly penetrates through the clamping groove, the buckling block of the buckle is buckled on the clamping convex ring, and the clamping convex ring is embedded into an embedding groove formed between the buckling block of the buckle and the outer side end of the movable sleeve.

Preferably, the inner side end of the ring body is provided with a positioning ring groove, the outer side end of the sleeve body is inserted into the positioning ring groove, and the opening of the positioning ring groove is provided with an extension body along the outer side edge.

Further preferably, the medial surface of apron has the location bulge loop, and the lateral wall of location bulge loop is laminated with the inside wall of buckle.

The utility model provides an inflator, includes the inflator and above the release structure, on the top lateral wall of inflator was located to the release structure, the perforation of release structure and the inner chamber intercommunication of inflator.

Further preferably, the gas cylinder further comprises a piston tube with a hollow interior, the top of the gas cylinder is provided with a positioning hole, and a positioning ring body is fixed at the opening edge of the bottom end of the positioning hole; the bottom end of the piston tube is inserted into the inflator through the positioning hole and the inner hole of the positioning ring body, the bottom end of the piston tube is fixed with a valve body communicated with the passage of the piston tube, and the top end of the piston tube is fixed with a handle; the handle is provided with an air outlet and an air inlet which are both communicated with the channel of the piston tube, the top of the handle is provided with a pressure gauge, and an induction head of the pressure gauge is positioned at the position of the air outlet; the side wall of the upper end and the side wall of the lower end of the valve body are respectively provided with a plurality of valve holes I and a plurality of valve holes II, sealing pieces are attached to the opening edge of the valve hole I positioned on the side wall of the inner space of the valve body and the opening edge of the valve hole II positioned on the side wall of the outer end part of the valve body so as to seal the valve holes I and the valve holes II; when the valve body rises along with the piston pipe, the valve hole I on the side wall of the upper end of the valve body and the valve hole II on the side wall of the lower end of the valve body are opened under the action of air pressure, and the valve hole I on the outer side wall of the lower end of the valve body and the valve hole II on the outer side wall of the upper end of the valve body are closed; when the valve body descends along with the piston pipe, the valve hole I on the side wall of the lower end of the valve body and the valve hole II on the side wall of the upper end of the valve body are opened under the action of air pressure, and the valve hole I on the outer side wall of the upper end of the valve body and the valve hole II on the outer side wall of the lower end of the valve body are closed.

Further preferably, the gas cylinder comprises a cap and a cylinder body, and the cap is detachably arranged at the top end of the cylinder body; the cover body of the pressure relief structure is arranged on the side wall of the cap, the cover body of the pressure relief structure and the cap are combined into an integral structure, and the outer side wall of the closed end at the bottom of the cylinder body is provided with an auxiliary sheet.

The utility model discloses an inflater and release structure thereof, its structure is when the lateral wall of movable sleeve is not connected with the inner chamber lateral wall of the cover body, valve body on piston pipe and the piston pipe is pulled up simultaneously, atmospheric pressure in the inflater loops through the perforation, produced gap between the sealing ring body of the interior end of movable sleeve and the position sleeve other end, the through-hole, the cavity of position sleeve, the passageway of movable sleeve, the hole of closing cap is discharged, thereby make the manual piston pipe of pulling up when inflating of inflater comparatively light, promote performance.

Drawings

FIG. 1 is a general cross-sectional view of the pressure relief structure of example 1;

fig. 2 is an exploded view of the pressure relief structure of example 1;

fig. 3 is a schematic view showing the overall construction of the pump according to embodiment 1;

fig. 4 is a sectional view showing the overall construction of the pump according to embodiment 1;

FIG. 5 is a schematic view (one) of the piston tube structure of embodiment 1 with the valve body fixed;

fig. 6 is a schematic structural view (two) of the piston tube to which the valve body is fixed according to embodiment 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.

Example 1:

as shown in fig. 1-6, the pressure relief structure described in this embodiment includes a sheath 1, and a through hole 11 is formed on a sidewall of an inner cavity of the sheath 1; the bottom surface of the inner cavity of the sleeve body 1 is provided with a positioning sleeve 2, the positioning sleeve 2 is sleeved with a movable sleeve 3 for sealing or opening a through hole, the side wall of the positioning sleeve 2 is provided with a through hole 22, one end of the positioning sleeve 2 is provided with a limiting ring 21, and a sealing ring body 23 at the other end of the positioning sleeve 2 is abutted against the inner side end of the movable sleeve 3; the inner end of the channel of the movable sleeve 3 is provided with a limit bulge 32; the outer side wall of the movable sleeve 3 is detachably connected with the inner cavity side wall of the sleeve body 1, and a sealing cover 4 with a hole is fixed at the outer side end of the movable sleeve; when the outer side wall of the movable sleeve 3 is not connected with the inner cavity side wall of the sleeve body 1, the through hole 11 is communicated with the hole 421 of the sealing cover 4 through a gap generated between the inner side end of the movable sleeve 3 and the sealing ring body 23 at the other end of the positioning sleeve 2, the cavity of the positioning sleeve 2 and the channel of the movable sleeve 3 in sequence. The sealing ring body 23 is fixed on the side surface of the disc body at the other end of the positioning sleeve, and the sealing ring body is positioned above the through hole. The positioning sleeve 2 is fixed on the bottom surface of the inner cavity of the sleeve body.

In order to connect the movable sleeve with the sleeve body more easily or to separate the movable sleeve from the sleeve body, the outer side wall of the movable sleeve 3 and the inner cavity side wall of the sleeve body 1 are in threaded connection, which is designed to be more convenient to use.

The working principle of the structure is as follows: when the pressure relief structure is opened, the movable sleeve is not in threaded connection with the sleeve body (in a movable state), so that a gap is formed between the inner side end of the movable sleeve and the sealing ring body at the other end of the positioning sleeve to open the through hole, and air pressure is discharged through the through hole, the gap, the through hole, the cavity of the positioning sleeve, the channel of the movable sleeve and the hole of the sealing cover. When the pressure relief structure is closed, the movable sleeve is fixed with the sleeve body in a threaded manner, and the inner side end of the movable sleeve is tightly abutted against the sealing ring body at the other end of the positioning sleeve so as to seal the through hole.

In this embodiment, the stop collar 21 has a notch 211. The structure of the movable sleeve facilitates the installation of the movable sleeve.

In this embodiment, the sealing cover 4 is fixed at the outer end of the movable sleeve 3, and the specific fixing structure is as follows: the cover 4 comprises a ring body 41 and a cover plate 42 with a plurality of holes 421, and the cover plate 42 is fixed at the outer side end of the inner hole of the ring body 41; the side wall of the inner hole of the ring body 41 is provided with a clamping convex ring 44 and a ring groove 43, the ring groove 43 is positioned at the outer side end of the inner hole of the ring body 41, the clamping convex ring 44 is positioned at the inner side end of the inner hole of the ring body 41, and the peripheral side of the cover plate 42 is embedded into the ring groove 43; the side wall of the inner hole of the clamping convex ring 44 is provided with a plurality of protrusions 442 to form a plurality of clamping grooves 441, and the outer side end of the movable sleeve 3 is provided with a plurality of buckles 31; after the buckle 31 correspondingly passes through the buckle slot 441, the buckle block 311 of the buckle 31 is buckled on the buckle convex ring 44, and the buckle convex ring 44 is embedded in the embedding slot 5 formed between the buckle block 311 of the buckle 31 and the outer side end of the movable sleeve 3. The assembly structure makes the sealing cover with the hole more convenient to be arranged at the outer side end of the movable sleeve, and the fastening and fixing are stable and reliable.

In this embodiment, the inner end surface of the ring body 41 has a positioning ring groove 45, the outer end of the sleeve body 1 is inserted into the positioning ring groove 45, and the opening of the positioning ring groove 45 has an extension 46 along the outer side. The inner side surface of the cover plate 42 is provided with a positioning convex ring 422, and the outer side wall of the positioning convex ring 422 is attached to the inner side wall of the buckle 31. The structure of the sealing cover enables the sealing cover to be firmly and reliably positioned and fixed.

Example 2:

as shown in fig. 1, the pump of the present embodiment includes a cylinder 6 and a pressure relief structure 14 as described in embodiment 1, the pressure relief structure 14 is provided on a top side wall of the cylinder 6, and a through hole 11 of the pressure relief structure 14 communicates with an inner cavity of the cylinder 6.

In this embodiment, the device further comprises a hollow piston tube 8, the top of the air cylinder 6 is provided with a positioning hole 621, and a positioning ring body 7 is fixed at the opening edge of the bottom end of the positioning hole 621; the bottom end of the piston tube 8 is inserted into the inflator through the positioning hole 621 and the inner hole of the positioning ring body 7, the bottom end of the piston tube is fixed with a valve body 10 communicated with the passage of the piston tube 8, and the top end of the piston tube is fixed with a handle 9; the handle is provided with an air outlet 92 and an air inlet 91 which are both communicated with the channel of the piston tube, the top of the handle is provided with a pressure gauge 93, and an induction head of the pressure gauge is positioned at the position of the air outlet 92; the side wall of the upper end and the side wall of the lower end of the valve body 10 are respectively provided with a plurality of valve holes I101 and a plurality of valve holes II 102, the opening edge of the valve hole I101, which is positioned at the side wall of the internal space of the valve body 10, and the opening edge of the valve hole II 102, which is positioned at the side wall of the outer end of the valve body 10, are respectively adhered with a sealing sheet 11 so as to seal the valve hole I101 and the valve hole II 102; when the valve body rises along with the piston pipe, the valve hole I on the side wall of the upper end of the valve body and the valve hole II on the side wall of the lower end of the valve body are opened under the action of air pressure, and the valve hole I on the outer side wall of the lower end of the valve body and the valve hole II on the outer side wall of the upper end of the valve body are closed; when the valve body descends along with the piston pipe, the valve hole I on the side wall of the lower end of the valve body and the valve hole II on the side wall of the upper end of the valve body are opened under the action of air pressure, and the valve hole I on the outer side wall of the upper end of the valve body and the valve hole II on the outer side wall of the lower end of the valve body are closed. Wherein air inlet and gas outlet both set up independently to not intercommunication, and air inlet department sets up the check valve, realizes only admitting air the effect of not giving vent to anger.

The working principle of the structure is as follows; the gas outlet is connected with the gas outlet pipe and is connected with an object to be inflated, when a large amount of gas does not exist in the object to be inflated, the movable sleeve is fixed with the sleeve body in a threaded manner, the inner side end of the movable sleeve is tightly abutted with the sealing ring body at the other end of the positioning sleeve to seal the perforation, so that the piston pipe is pulled upwards, when the valve body follows the air pressure effect when the piston pipe rises, the valve hole I on the side wall at the upper end of the valve body and the valve hole II on the side wall at the lower end of the valve body are opened, the valve hole I on the outer side wall at the lower end of the valve body and the valve hole II on the outer side wall at the upper end of the valve body are closed, at the moment, the gas entering the gas inlet enters the space below the valve body in the inflator (the gas enters due to the fact that the sealing sheet at the position of the, the gas in the upper space of the valve body in the inflator is quickly discharged to a gas outlet through the inner space of the valve body and the piston pipe, and the gas in the gas outlet enters the object to be inflated through the gas outlet pipe; then the piston tube is pressed down, the valve body opens the valve hole I on the side wall of the lower end of the valve body and the valve hole II on the side wall of the upper end of the valve body under the action of the air pressure when the piston tube descends, the valve hole I on the outer side wall of the upper end of the valve body and the valve hole II on the outer side wall of the lower end of the valve body are closed, at the moment, the air inlet does not admit air or give out air (the air cannot be given out air under the action of the one-way valve), the air in the space below the valve body in the air cylinder is extruded to push the sealing sheet on the valve hole I on the side wall of the lower end of the valve body away, so that the valve hole I at the position is opened, the air in the space below the valve body in the air cylinder is rapidly discharged to the air outlet through the inner space of the valve body and the air in the air outlet enters, therefore, the operation is continued for a certain time, and after a large amount of gas exists in the object to be inflated, the movable sleeve is not in threaded connection with the sleeve body (is in a movable state), so that a gap is generated between the inner side end of the movable sleeve and the sealing ring body at the other end of the positioning sleeve to open the through hole, the air pressure is discharged through the through hole, the gap, the through hole, the cavity of the positioning sleeve, the channel of the movable sleeve and the hole of the sealing cover, the pressure relief of the inflator is completed, then the piston tube is pulled up and pressed down to further inflate the object to be inflated until the air pressure in the object to be inflated is sufficient, the through hole of the pressure relief structure is opened, the piston tube is pulled up and pressed down conveniently.

In this embodiment, the gas cylinder 6 includes a cap 62 and a cylinder 61, the cap 62 is detachably mounted on the top end of the cylinder 61; the sleeve body 1 of the pressure relief structure 14 is arranged on the side wall of the cap 62, the sleeve body 1 of the pressure relief structure 14 and the cap 62 are combined into an integral structure, and the outer side wall of the bottom closed end of the cylinder body 61 is provided with an auxiliary sheet 13. The auxiliary sheet of its structure makes when inflating can be fixed the gas pocket with the foot to be convenient for pull up the piston tube, promote performance. The split type inflator is adopted, so that the valve body and the piston pipe are simple and convenient to install, the assembling efficiency is improved, and the disassembly and the maintenance are convenient.

The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.

Claims (10)

1. A pressure relief structure is characterized by comprising a sleeve body, wherein the side wall of the inner cavity of the sleeve body is provided with a through hole; the bottom surface of the inner cavity of the sleeve body is provided with a positioning sleeve, the positioning sleeve is sleeved with a movable sleeve which can seal or open the through hole, the side wall of the positioning sleeve is provided with a through hole, one end of the positioning sleeve is provided with a limiting ring, and the sealing ring body at the other end of the positioning sleeve is abutted against the inner side end of the movable sleeve; the inner side end of the channel of the movable sleeve is provided with a limiting bulge; the outer side wall of the movable sleeve is detachably connected with the inner cavity side wall of the sleeve body, and a sealing cover with a hole is fixed at the outer side end of the movable sleeve; when the outer side wall of the movable sleeve is not connected with the inner cavity side wall of the sleeve body, the through hole is communicated with the hole of the sealing cover through a gap and a through hole which are generated between the inner side end of the movable sleeve and the sealing ring body at the other end of the positioning sleeve, the cavity of the positioning sleeve and the channel of the movable sleeve in sequence.

2. The pressure relief structure of claim 1, wherein the stop collar has a notch therein.

3. The pressure relief structure of claim 1, wherein the retaining sleeve is secured to the bottom surface of the interior cavity of the housing.

4. The pressure relief structure of claim 1, wherein the outer sidewall of the flexible sleeve and the inner sidewall of the sleeve body are threaded with each other.

5. The pressure relief structure of claim 1, wherein the cap is fixed to the outer end of the movable sleeve by a specific fixing structure comprising: the sealing cover comprises a ring body and a cover plate with a plurality of holes, and the cover plate is fixed at the outer side end of the inner hole of the ring body; the side wall of the inner hole of the ring body is provided with a clamping convex ring and a ring groove, the ring groove is positioned at the outer side end of the inner hole of the ring body, the clamping convex ring is positioned at the inner side end of the inner hole of the ring body, and the peripheral side of the cover plate is embedded into the ring groove; the side wall of an inner hole of the clamping convex ring is provided with a plurality of bulges to form a plurality of clamping grooves, and the outer side end of the movable sleeve is provided with a plurality of buckles; after the buckle correspondingly penetrates through the clamping groove, the buckling block of the buckle is buckled on the clamping convex ring, and the clamping convex ring is embedded into an embedding groove formed between the buckling block of the buckle and the outer side end of the movable sleeve.

6. The pressure relief structure of claim 5, wherein the inner end of the ring body has a positioning ring groove, the outer end of the sleeve body is inserted into the positioning ring groove, and the opening of the positioning ring groove has an extension along the outer edge.

7. The pressure relief structure of claim 5, wherein the cover plate has a locating collar on an inner side thereof, an outer sidewall of the locating collar abutting an inner sidewall of the latch.

8. A pump for inflating a bicycle, comprising a cylinder and a pressure relief structure according to any one of claims 1 to 7, the pressure relief structure being provided on a top end side wall of the cylinder, the bore of the pressure relief structure communicating with the interior chamber of the cylinder.

9. The pump according to claim 8, further comprising a hollow piston tube, the top of the pump having a positioning hole, the bottom opening edge of which is fixed with a positioning ring; the bottom end of the piston tube is inserted into the inflator through the positioning hole and the inner hole of the positioning ring body, the bottom end of the piston tube is fixed with a valve body communicated with the passage of the piston tube, and the top end of the piston tube is fixed with a handle; the handle is provided with an air outlet and an air inlet which are both communicated with the channel of the piston tube; the side wall of the upper end and the side wall of the lower end of the valve body are respectively provided with a plurality of valve holes I and a plurality of valve holes II, sealing pieces are attached to the opening edge of the valve hole I positioned on the side wall of the inner space of the valve body and the opening edge of the valve hole II positioned on the side wall of the outer end part of the valve body so as to seal the valve holes I and the valve holes II; when the valve body rises along with the piston pipe, the valve hole I on the side wall of the upper end of the valve body and the valve hole II on the side wall of the lower end of the valve body are opened under the action of air pressure, and the valve hole I on the outer side wall of the lower end of the valve body and the valve hole II on the outer side wall of the upper end of the valve body are closed; when the valve body descends along with the piston pipe, the valve hole I on the side wall of the lower end of the valve body and the valve hole II on the side wall of the upper end of the valve body are opened under the action of air pressure, and the valve hole I on the outer side wall of the upper end of the valve body and the valve hole II on the outer side wall of the lower end of the valve body are closed.

10. The pump according to claim 9, wherein the cylinder includes a cap and a barrel, the cap being detachably mounted on the top end of the barrel; the cover body of the pressure relief structure is arranged on the side wall of the cap, the cover body of the pressure relief structure and the cap are combined into an integral structure, and the outer side wall of the closed end at the bottom of the cylinder body is provided with an auxiliary sheet.

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