CN210461818U

CN210461818U - Automatic exhaust valve structure

Info

Publication number: CN210461818U
Application number: CN201920562763.3U
Authority: CN
Inventors: 郝泽栋
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2020-05-05
Anticipated expiration: 2029-04-23

Abstract

The utility model relates to a high pressure inflation product technical field relates to an automatic exhaust valve structure, including valve body and valve gap, the valve body includes hollow post one and hollow post two, and the internal diameter of hollow post one is greater than the internal diameter of hollow post two, is provided with a valve block in the valve body, and the valve block bottom even has the spring, and when the spring was in free state, the periphery of valve block and the interior circumference butt of hollow post two, when the spring was in the extension state, the valve block stretched out to the inside of hollow post one, the valve gap cover is established in the periphery of hollow post one, leaves the clearance with outside intercommunication between the inner wall of valve gap and the hollow post outer wall; the utility model discloses a beneficial effect body: when the air pressure in the air bag is at a safe value or low pressure, the valve plate is positioned at the second hollow column, so that air leakage can be effectively prevented; when the air pressure in the air bag is at high pressure or needs to exhaust, the valve plate is pushed to the first hollow column by the air pressure, so that redundant air flows out from a gap between the valve plate and the first hollow column, and the explosion caused by overlarge pressure in the air bag is effectively prevented.

Description

Automatic exhaust valve structure

Technical Field

The utility model relates to a product technical field is aerifyd to the high pressure, concretely relates to automatic exhaust valve structure.

Background

In the prior art, the exhaust valve of a high-pressure inflating product such as an air bag is only a simple vent hole, and when the exhaust valve is closed and the air bag is inflated, the defects that the air bag is inflated too much and the air pressure in the air bag is too high to burst exist.

Based on this, the present case arises from this.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides an automatic exhaust valve structure for prevent that the too big phenomenon of gasbag internal pressure from taking place.

The utility model provides an automatic exhaust valve structure, includes valve body and valve gap, the valve body includes from last empty core column one and the empty core column two that sets gradually extremely down, empty core column one and empty core column two all are both ends opening, and the internal diameter of empty core column one is greater than the internal diameter of empty core column two, the activity is provided with a valve block in the valve body, the bottom fixedly connected with spring of this valve block, and the one end and the empty core column two fixed connection of valve block are kept away from to this spring, and when this spring was in free state, the periphery of valve block and the interior peripheral seal butt of empty core column two when the spring was in the extension state, the valve block stretches out to the inside of empty core column one from the uncovered department in top of empty core column two, the valve gap that the valve gap communicates with the outside is established to the periphery of empty core column one, and leave between the inner wall of.

Preferably, the outer diameter of the first hollow column is larger than that of the second hollow column, a step surface is formed at the joint of the first hollow column and the second hollow column, and a plurality of limiting blocks are uniformly distributed on the circumference of the bottom of the inner periphery of the valve cover and clamped on the step surface.

Preferably, the distance from the free end of the limiting block to the hollow column 1 is less than half of the width of the step surface, and the valve cover is prevented from falling off due to shaking and extrusion.

Preferably, the bottom of the outer periphery of the valve cover is provided with a C-shaped groove, the bottom wall of the C-shaped groove is provided with a plurality of through holes, a C-shaped metal sheet is embedded in the C-shaped groove, a plurality of protrusions are integrally formed on the inner periphery of the C-shaped metal sheet, one end, far away from the C-shaped metal sheet, of each protrusion penetrates through the corresponding through hole, and the end, penetrating through the through hole, of each protrusion forms the limiting block.

Preferably, the upper portion of the outer periphery of the first hollow column is provided with a first external thread, the upper portion of the inner periphery of the valve cover is provided with an internal thread matched with the first external thread, and the distance between the limiting block and the step surface is greater than the width of the first external thread.

Preferably, the top of the inner circumference of the valve cover is provided with a sealing gasket.

Preferably, the bottom of the second hollow column is integrally formed with a stop ring, the inner diameter of the stop ring is smaller than that of the second hollow column, and one end, far away from the valve plate, of the spring is fixedly connected with the stop ring.

Preferably, the bottom of the outer wall of the second hollow column is provided with a second external thread.

Preferably, the diameter of the spring is smaller than the inner diameter of the hollow column II.

Preferably, a sealing ring is arranged on the periphery of the valve plate.

The beneficial effects of the utility model are embodied in: when the air pressure in the air bag is at a safe value or low pressure, the valve plate is positioned at the second hollow column, so that air leakage can be effectively prevented; when the air pressure in the air bag is at high pressure or needs to be exhausted, the valve plate is pushed to the first hollow column by the air pressure, so that redundant air flows out from the space between the valve plate and the first hollow column and finally flows out of the valve, and the explosion caused by overlarge pressure in the air bag is effectively prevented; when the pressure in the air bag is reduced to a safe value, the valve plate can be reduced to the second hollow column due to the contraction force of the spring. The bottom of the valve cover is provided with a limited limiting block, and the valve cover can not be detached and can be prevented from being lost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;

FIG. 2 is a schematic view of a C-shaped metal sheet.

In the attached drawing, 1-a hollow column I, 2-a hollow column II, 3-a valve cover, 4-a spring, 5-a valve plate, 6-a first external thread, 7-an internal thread, 8-a second external thread, 9-a C-shaped groove, 10-a C-shaped metal sheet, 11-a limiting block, 12-a sealing pad and 13-a blocking ring.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

This embodiment provides an automatic exhaust valve structure, as shown in fig. 1, including valve body and valve gap 3, the valve body includes from last to two 2 of hollow post 1 and the hollow post that set gradually down, hollow post 1 and hollow post two 2 all are both ends opening, and the internal diameter of hollow post 1 is greater than the internal diameter of hollow post two 2, the activity is provided with a valve block 5 in the valve body, and the bottom fixedly connected with spring 4 of this valve block 5, the bottom integrated into one piece of hollow post two 2 have a barrier ring 13, and the internal diameter of this barrier ring 13 is less than the internal diameter of hollow post two 2, the one end that valve block 5 was kept away from to spring 4 and this barrier ring 13 fixed connection, and as preferred, the diameter of spring 4 is less than the internal diameter of hollow post two 2, be equipped with the sealing washer in the periphery of valve block 5 for prevent gas leakage. When the spring 4 is in a free state, the outer periphery of the valve plate 5 is in sealing butt joint with the inner periphery of the hollow column II 2, when the spring 4 is in an extension state, the valve plate 5 extends out of the top opening of the hollow column II 2 to the inside of the hollow column I1, the valve cover 3 is sleeved on the outer periphery of the hollow column I1, and a gap communicated with the outside is reserved between the inner wall of the valve cover 3 and the outer wall of the hollow column I1; the outer diameter of the hollow column I1 is larger than that of the hollow column II 2, a step surface is formed at the joint of the hollow column I1 and the hollow column II 2, a plurality of limiting blocks 11 are uniformly distributed on the circumference of the bottom of the inner periphery of the valve cover 3, the limiting blocks 11 are clamped on the step surface, and the length of each limiting block 11 is larger than one half of the width of the step surface. When the air pressure in the air bag is at a safe value or low pressure, the valve plate 5 is positioned at the hollow column II 2, so that air leakage can be effectively prevented; when the air pressure in the air bag is at high pressure or needs to exhaust, the valve plate 5 is pushed to the first hollow column 1 by the air pressure, so that redundant air flows out from the space between the valve plate 5 and the first hollow column 1 and finally flows out of the valve, and the explosion caused by overlarge pressure in the air bag is effectively prevented. When the pressure in the air bag is reduced to a safe value, the valve plate 5 is reduced to the hollow column II 2 due to the contraction force of the spring 4. And the limiting block 11 arranged at the bottom of the valve cover 3 limits the valve cover 3, so that the valve cover 3 cannot be detached and can be prevented from being lost.

In order to facilitate the disassembly and assembly of the valve cover 3, a C-shaped groove 9 is formed in the bottom of the outer periphery of the valve cover 3, a plurality of through holes are formed in the bottom wall of the C-shaped groove 9, a C-shaped metal sheet 10 is embedded in the C-shaped groove 9, a plurality of protrusions are integrally formed in the inner periphery of the C-shaped metal sheet 10, one end, far away from the C-shaped metal sheet 10, of each protrusion penetrates through the corresponding through hole, and the end, penetrating through the through hole, of each protrusion forms the limiting block 11. When the valve cover is disassembled, the C-shaped metal sheet 10 is taken out firstly, and the valve cover 3 can be taken down after losing the limit.

For preventing the gasbag from receiving unexpected gas leakage of condition such as extrusion, the periphery upper portion of hollow post 1 is provided with first external screw thread 6, the interior circumference upper portion of valve gap 3 is provided with the internal thread 7 with this first external screw thread 6 adaptation, distance between stopper 11 and the step face is greater than the width of first external screw thread 6. The top of the inner circumference of the valve cover 3 is provided with a sealing gasket 12. The threaded connection of the valve cover 3 and the hollow column I1 enables the valve cover 3 and the hollow column I to be fully sealed, and the sealing gasket 12 obviously enhances the sealing effect.

In order to facilitate the connection of the hollow column II 2 and the air outlet of the air bag, the bottom of the outer wall of the hollow column II 2 is provided with a second external thread 8.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments can still be modified

The scope of the claims and the description should not be limited to the details of the corresponding embodiments, but rather should be defined by the claims and the description.

Claims

1. An automatic exhaust valve structure which is characterized in that: including valve body and valve gap, the valve body includes from last empty core column one and the empty core column two that sets gradually extremely down, empty core column one and empty core column two all are both ends opening, and the internal diameter of empty core column one is greater than the internal diameter of empty core column two, the activity is provided with a valve block in the valve body, the bottom fixedly connected with spring of this valve block, and the one end and the empty core column two fixed connection of valve block are kept away from to this spring, when this spring is in free state, the periphery of valve block and the interior peripheral seal butt of empty core column two when the spring is in the extension state, the valve block stretches out to the inside of empty core column one from the uncovered department in top of empty core column two, the valve gap cover is established the periphery of empty core column one, and be in leave the clearance with outside intercommunication between the inner wall of valve gap and the empty core.

2. An automatic exhaust valve structure according to claim 1, characterized in that: the outer diameter of the first hollow column is larger than that of the second hollow column, a step surface is formed at the joint of the first hollow column and the second hollow column, and a plurality of limiting blocks are uniformly distributed on the circumference of the bottom of the inner periphery of the valve cover and clamped on the step surface.

3. An automatic exhaust valve structure according to claim 2, characterized in that: the distance from the free end of the limiting block to the second hollow column is less than one half of the width of the step surface.

4. An automatic exhaust valve structure according to claim 2, characterized in that: the outer periphery bottom of valve gap is provided with C shape recess, and a plurality of through-holes have been seted up to the diapire of this C shape recess the embedded C shape sheetmetal that is equipped with of C shape recess, the inner peripheral integrated into one piece of this C shape sheetmetal has a plurality of archs, and the one end that this arch was kept away from the C shape sheetmetal passes corresponding through-hole, and this arch passes the tip of through-hole forms the stopper.

5. An automatic exhaust valve structure according to claim 2, characterized in that: the hollow column I is provided with a first external thread on the upper portion of the outer periphery, the upper portion of the inner periphery of the valve cover is provided with an internal thread matched with the first external thread, and after the valve cover is screwed down, the distance between the limiting block and the step surface is larger than the width of the first external thread.

6. An automatic exhaust valve structure according to claim 4, characterized in that: and a sealing gasket is arranged at the top of the inner periphery of the valve cover.

7. An automatic exhaust valve structure according to claim 1, characterized in that: and a stop ring is integrally formed at the bottom of the hollow column II, the inner diameter of the stop ring is smaller than that of the hollow column II, and one end, far away from the valve block, of the spring is fixedly connected with the stop ring.

8. An automatic exhaust valve structure according to claim 1, characterized in that: and a second external thread is arranged at the bottom of the outer wall of the hollow column II.

9. An automatic exhaust valve structure according to claim 1, characterized in that: the diameter of the spring is smaller than the inner diameter of the hollow column II.

10. An automatic exhaust valve structure according to claim 1, characterized in that: and a sealing ring is arranged on the periphery of the valve plate.