CN115750904A

CN115750904A - Sealing rocker valve and gas generator

Info

Publication number: CN115750904A
Application number: CN202211714035.2A
Authority: CN
Inventors: 翟志斌; 钮吉萍; 杨雁南; 沈飞宙; 唐宣东
Original assignee: Semeatech Shanghai Co ltd
Current assignee: Semeatech Shanghai Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-03-07

Abstract

The invention discloses a sealing rocker valve and a gas generator, and relates to the technical field of valves. The sealing rocker valve comprises a cantilever switch, a middle shaft, a rubber gasket, an external threaded column, a threaded cover and a vent valve; the two ends of the middle shaft are respectively connected with a cantilever switch and a vent valve, the cantilever switch is arranged outside the shell of the gas generator, and the middle shaft is arranged in the shell of the gas generator; the external thread column is sleeved on the middle shaft, and the thread cover is in thread fit with the external thread column; the rubber gasket is sleeved on the middle shaft and arranged between the external thread column and the thread cover, so that the flow of gas inside and outside the generator can be prevented, and the sealing effect is improved.

Description

Sealed rocker valve and gas generator

Technical Field

The invention relates to the technical field of valves, in particular to a sealing rocker valve and a gas generator.

Background

A rocker valve is a linkage that uses an external cantilever switch to control the movement of an internal vent valve.

Because outside cantilever switch, inside breather valve and the casing of complex with it are the plastic material, in order to reach rotatable effect, can't be sealed completely with glue, the gas inside and outside the generator flows each other, influences the life-span of generator.

Disclosure of Invention

One of the objectives of the present invention is to provide a sealing rocker valve capable of preventing the gas flow inside and outside the generator, and improving the sealing effect.

An object of the present invention is to provide a gas generator capable of preventing gas from flowing between the inside and outside of the generator and improving a sealing effect.

The technical scheme of the application is as follows:

in a first aspect, the present application provides a sealed rocker valve for use in a gas generator, the sealed rocker valve comprising a cantilever switch, a central shaft, a rubber gasket, an externally threaded post, a threaded cap, and a vent valve. The two ends of the middle shaft are respectively connected with the cantilever switch and the ventilation valve, the cantilever switch is arranged outside the shell of the gas generator, and the middle shaft is arranged in the shell of the gas generator; the external thread column is sleeved on the middle shaft, and the thread cover is in thread fit with the external thread column; the rubber gasket is sleeved on the middle shaft and arranged between the external thread column and the thread cover. The middle shaft is locked with the cantilever switch, the bottom of the middle shaft is bonded with the vent valve, and the cantilever switch controls the rotation angle of the vent valve through the middle shaft.

Optionally, a limiting device is arranged on the housing, and the limiting device is used for limiting the rotation angle of the cantilever switch.

Optionally, the limiting device includes two limiting posts disposed on the housing, the cantilever switch is located between the two limiting posts, and when the cantilever switch rotates to abut against one of the limiting posts, the vent valve closes a sensor vent of the gas generator; when the cantilever switch rotates to abut against the other limiting column, the vent valve opens a sensor vent of the gas generator.

Optionally, a nut is arranged at one end of the middle shaft close to the cantilever switch, and the cantilever switch is locked with the nut through a mechanical screw.

Optionally, a first protruding rib is arranged on the middle shaft, and the rubber gasket interferes with the middle shaft through the first protruding rib.

Optionally, there is the second protruding muscle in external screw thread post bottom, external screw thread post passes through the second protruding muscle with the rubber gasket produces the interference.

Optionally, the bottom surface of the vent valve is coplanar with the bottom surface of the central shaft, and the central shaft is adhered to the vent valve.

In a second aspect, the present application also provides a gas generator comprising a housing and the sealed rocker valve described above.

Optionally, the casing includes the generator upper cover, cover on the generator and seted up the sensor blow vent, cover on the generator and lie in sensor blow vent department and be provided with the sensor storehouse, the vent flap is used for sealing the sensor blow vent, the top in sensor storehouse is provided with the top cap.

The technical effects of the sealing rocker valve and the gas generator provided by the invention at least comprise: when the gas generator operates, gas is generated in the gas generator, the gas in the gas generator can flow to a gap between the middle shaft and the threaded cover, the gas is blocked at the position where the middle shaft interferes with the rubber gasket and cannot flow out of the shell, and external gas cannot flow into the shell through the position where the middle shaft interferes with the rubber gasket; the inside gaseous clearance between external screw thread post and the screw cap of also can flowing to of gas generator, can be stopped in the position that external screw thread post and rubber gasket interfered, unable flow direction axis, and then outside unable flow direction casing, inside the external gas also can't flow to the casing through the position that external screw thread post and rubber gasket interfered to prevent the inside and outside gas flow of gas generator, promoted sealed effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of a gas generator according to an embodiment of the present application;

FIG. 2 is a schematic partial cross-sectional view of a gas generator according to an embodiment of the present application;

FIG. 3 is a cross-sectional view of a seal rocker valve according to an embodiment of the present application;

fig. 4 is a schematic partial structural view for showing the first rib and the second rib in the embodiment of the present application.

An icon: 100-a gas generator; 110-sealing a rocker valve; 111-cantilever switch; 112-mechanical thread screw; 113-a nut; 114-a screw cap; 115-rubber gasket; 116-a vent valve; 117-medial axis; 1171-a first rib; 120-a top cover; 130-a housing; 131-generator upper cover; 1311-externally threaded post; 13111-second ribs; 1312-a sensor vent; 1313-a sensor cartridge; 132-a limit post.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which the product of the present invention is used to usually place, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Referring to fig. 1-4, the present embodiment provides a gas generator 100, the gas generator 100 for detecting the accuracy of a sensor reading, the gas generator 100 including a sealed rocker valve 110 and a housing 130.

The seal rocker valve 110 includes a cantilever switch 111, a threaded cap 114, a rubber gasket 115, a vent valve 116, a central shaft 117, and an externally threaded post 1311. The two ends of the middle shaft 117 are respectively connected with the cantilever switch 111 and the vent valve 116, the cantilever switch 111 is arranged outside the shell 130 of the gas generator 100, and the middle shaft 117 is arranged in the shell 130 of the gas generator 100; the external threaded column 1311 is sleeved on the middle shaft 117, and the threaded cover 114 is in threaded fit with the external threaded column 1311; the rubber gasket 115 is sleeved on the middle shaft 117, and the rubber gasket 115 is disposed between the external threaded column 1311 and the threaded cap 114.

It should be noted that the middle shaft 117 is installed in the external threaded column 1311, the screw cap 114 is screwed with the external threaded column 1311, and the screw cap 114 is locked with the external threaded column 1311 and then restricts the movement of the middle shaft 117 in the up-and-down direction.

When the gas generator 100 operates, gas is generated inside the gas generator 100, the gas inside the gas generator can flow to a gap between the central shaft 117 and the threaded cover 114, the gas is blocked at a position where the central shaft 117 interferes with the rubber gasket 115 and cannot flow out of the shell 130, and external gas cannot flow into the shell 130 through a position where the central shaft 117 interferes with the rubber gasket 115; the gas that gas generator 100 inside produced also can flow to the clearance between external screw post 1311 and the screw cap 114, can be blocked at the position that external screw post 1311 and rubber gasket 115 interfere, can't flow to axis 117, and then can't flow to outside the casing 130, outside gas also can't flow to inside the casing 130 through the position that external screw post 1311 and rubber gasket 115 interfere, thereby prevented the inside and outside gas flow of gas generator 100, promoted sealed effect.

In an alternative embodiment, a limiting device is disposed on the cantilever switch 111, and the limiting device is used for limiting the rotation angle of the cantilever switch 111.

The cantilever switch 111 has two positions of on and off during rotation, and the limiting device limits the cantilever switch 111 when the cantilever switch 111 is in the on position and limits the cantilever switch 111 when the cantilever switch 111 is in the off position.

In an alternative embodiment, the position limiting device includes two position limiting posts 132 disposed on the housing 130, the cantilever switch 111 is located between the two position limiting posts 132, and when the cantilever switch 111 rotates to abut against one of the position limiting posts 132, the vent valve 116 closes the sensor vent 1312 of the gas generator 100; when the cantilever switch 111 is rotated into abutment with the other of the restraint posts 132, the vent valve 116 opens the sensor vent 1312 of the gas generator 100.

It should be noted that the vent valve 116 is used to open or close the sensor vent 1312 of the gas generator 100, and the cantilever switch 111 rotates between the two position-limiting posts 132.

In an alternative embodiment, a nut 113 is disposed at one end of the middle shaft 117 near the cantilever switch 111, and the cantilever switch 111 is locked with the nut 113 by a mechanical thread screw 112.

It should be noted that when the screw 112 is engaged with the nut 113, the cantilever switch 111 is connected to the middle shaft 117, and when the cantilever switch 111 rotates, the middle shaft 117 rotates synchronously with the cantilever switch 111.

In an alternative embodiment, the nut 113 is heat staked to the top of the central shaft 117.

In other embodiments, the nut 113 and the central shaft 117 may be removably coupled.

In an alternative embodiment, the middle shaft 117 is provided with a first rib 1171, and the rubber gasket 115 and the middle shaft 117 interfere with each other through the first rib 1171.

It should be noted that the central axis 117 is a stepped axis, a stepped surface is provided at a position of the central axis 117 close to the rubber gasket 115, the stepped surface is attached to the rubber gasket 115, the first rib 1171 is disposed on the stepped surface, and optionally, the first rib 1171 is annular.

When the central shaft 117 is attached to the rubber gasket 115 through the stepped surface, the first rib 1171 interferes with the rubber gasket 115, so that gas is not easy to pass through at the position where the first rib 1171 interferes with the rubber gasket 115, and the condition that the inside gas and the outside gas cannot circulate through the central shaft 117 is ensured.

In an alternative embodiment, the bottom of the externally threaded column 1311 has a second rib 13111, and the externally threaded column 1311 interferes with the rubber gasket 115 through the second rib 13111.

The external screw column 1311 interferes with the rubber gasket 115 through the second rib 13111, and the gas passing through the gap between the external screw column 1311 and the screw cap 114 cannot flow into the middle shaft 117 any more, so that the gas is blocked from flowing out of the housing 130, and the external gas cannot flow into the housing 130 through this position. Further, by rotating the screw cap 114, the interference amount of the rubber washer 115 with the first rib 1171 of the center shaft 117 and the second rib 13111 of the male screw post 1311 can be adjusted, and the force of the cantilever switch 111 can be adjusted.

In an alternative embodiment, rubber gasket 115 is bonded to threaded cap 114.

It is to be noted that the rubber gasket 115 is bonded on a flat surface inside the screw cap 114.

In an alternative embodiment, the bottom surface of the vent valve 116 is coplanar with the bottom surface of the central shaft 117, and the central shaft 117 is bonded to the vent valve 116.

It should be noted that the vent valve 116 is installed at the bottom of the central shaft 117, the bottom surface of the vent valve 116 is coincident with the bottom surface of the central shaft 117, and the vent valve 116 and the central shaft 117 are fixed by gluing.

In an alternative embodiment, the housing 130 includes a generator upper cover 131, a sensor vent 1312 is opened on the generator upper cover 131, a sensor chamber 1313 is disposed on the generator upper cover 131 at the sensor vent 1312, the vent valve 116 is used for sealing the sensor vent 1312, and the top of the sensor chamber 1313 is provided with the top cover 120.

It is noted that the cantilever switch 111 has a closed position and an open position during rotation, the vent valve 116 covers the sensor vent hole 1312 when the cantilever switch 111 is in the closed position, and the sensor vent hole 1312 is not covered by the vent valve 116 when the cantilever switch 111 is in the open position; the externally threaded post 1311 is integrally formed with the generator upper cover 131; the two limiting columns 132 are both arranged on the generator upper cover 131; the sensor bin 1313 is cylindrical, a top cover 120 is mounted at the top of the sensor bin 1313, and the top cover 120 is used for sealing the sensor bin 1313; when the top cover 120 is removed, an external gas sensor can be interfaced with the sensor chamber 1313 so that the gas generator 100 can calibrate the gas sensor.

When the cantilever switch 111 is rotated, the vent valve 116 rotates along with the cantilever switch 111, when the vent valve 116 does not cover the sensor vent 1312, the sensor chamber 1313 is in a vent state, and when the sensor chamber 1313 is in the vent state, the top cover 120 is removed, the gas sensor is butted with the sensor chamber 1313, and the gas generator 100 can calibrate the gas sensor; when the vent valve 116 covers the sensor vent 1312, the sensor cartridge 1313 assumes a closed state.

In summary, the embodiments of the present disclosure provide a sealed rocker valve 110 and a gas generator 100, when the gas generator 100 operates, gas is generated inside the gas generator 100, the gas enters the sensor chamber 1313 through the sensor vent 1312, the internal gas flows to the gap between the middle shaft 117 and the screw cap 114, and is blocked from flowing out of the housing 130 at the position where the first rib 1171 of the middle shaft 117 interferes with the rubber gasket 115. The gas generated inside the gas generator 100 also flows into the gap between the male threaded post 1311 and the threaded cap 114, and is blocked at the position where the second rib 13111 of the male threaded post 1311 interferes with the rubber gasket 115, and thus cannot flow toward the center shaft 117 and further cannot flow toward the outside of the housing 130. Similarly, the external air cannot pass through the position where the first rib 1171 interferes with the rubber gasket 115 and the position where the second rib 13111 interferes with the rubber gasket 115, so that the flow of the air inside and outside the generator is prevented, and the sealing effect is improved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealed rocker valve is characterized by being applied to a gas generator and comprising a cantilever switch, a middle shaft, a rubber gasket, an external threaded column, a threaded cover and a vent valve;

the two ends of the middle shaft are respectively connected with the cantilever switch and the ventilation valve, the cantilever switch is arranged outside the shell of the gas generator, and the middle shaft is arranged in the shell of the gas generator; the external thread column is sleeved on the middle shaft, and the thread cover is in thread fit with the external thread column; the rubber gasket is sleeved on the middle shaft and arranged between the external thread column and the thread cover.

2. The sealed rocker valve as recited in claim 1, wherein the housing has a stop means disposed thereon for limiting the angle of rotation of the cantilever switch.

3. The sealed rocker valve of claim 2, wherein the stop means comprises two stop posts disposed on the housing, the cantilever switch is positioned between the two stop posts, and the vent valve closes the sensor vent of the gas generator when the cantilever switch is rotated into abutment with one of the stop posts; when the cantilever switch rotates to abut against the other limiting column, the vent valve opens a sensor vent of the gas generator.

4. The sealed rocker valve as recited in claim 1, wherein the central shaft has a nut disposed at an end thereof adjacent the cantilever switch, and the cantilever switch is locked to the nut by a mechanical threaded screw.

5. The seal rocker valve of claim 4, wherein the nut is heat staked to the top of the central shaft.

6. The sealed rocker valve as recited in claim 1, wherein the central shaft has a first rib disposed thereon, the rubber gasket interfering with the central shaft through the first rib.

7. The sealed rocker valve as recited in claim 1, wherein the externally threaded post has a second rib at a bottom thereof, the externally threaded post interfering with the rubber gasket through the second rib.

8. The sealing rocker valve of claim 1, wherein a bottom surface of the vent valve is coplanar with a bottom surface of the central shaft, the central shaft being bonded to the vent valve.

9. A gas generator comprising a housing and a sealed rocker valve as claimed in any one of claims 1 to 8.

10. The gas generator as claimed in claim 9, wherein the housing includes a generator cover, the generator cover has a sensor vent, the generator cover has a sensor chamber at the sensor vent, the vent valve is used to close the sensor vent, and a top cover is disposed on the top of the sensor chamber.