WO2021102783A1

WO2021102783A1 - Lighter gas cylinder having good sealing effect

Info

Publication number: WO2021102783A1
Application number: PCT/CN2019/121547
Authority: WO
Inventors: 邓卫城
Original assignee: 赣州市卫诚火机制造有限公司
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2021-06-03

Abstract

A lighter gas cylinder having a good sealing effect, comprising: a body (1), which is provided with an accommodating chamber that can accommodate liquefied flammable gas; a cover (2), which is integrally injection molded, wherein an outer edge of the lower end of a hollow part is provided with a cold slug (22), the hollow part is provided with a hollow hole (21), and the hollow hole (21) comprises an upper section (211), a middle section (212), and a lower section (213); a sealing bowl (3), which is disposed in the lower section (213) of the hollow hole (21) of the cover (2); and a valve assembly (4), which is located in the hollow hole (21). The described lighter gas cylinder transfers, to the outer edge of the lower end of the hollow part of the cover, a welding mark that is originally generated in the hollow hole of the cover adjacent to the sealing bowl, the welding mark being relatively far from a sealing surface, thus the pressure-resistance strength of the gas cylinder is improved, and the sealing effect is ensured.

Description

Igniter gas cylinder with good sealing effect

Technical field

The utility model belongs to the technical field of igniter gas filling, in particular to an igniter gas cylinder with good sealing effect.

Background technique

The igniter gas cylinder usually includes a body, a cover, a sealing bowl, a valve assembly and a head cover. The device cover is arranged at the upper end of the device body and sealed with the device body, the sealing bowl is arranged at the lower end of the hollow hole of the device cover, the air valve assembly is arranged in the hollow hole of the device cover, and the head cover covers the air valve assembly.

The existing device cover is usually injection molded from AS resin. Refer to Figure 1. In order to ensure the sealing performance, the hollow hole of the cover needs to have a certain depth. When the injection molding process is used, the lower end of the hollow hole of the cover has the lowest temperature, and the part where the sealing bowl is installed on the cover is prone to weld marks. The mark exists in the sealing position of the sealed bowl and the cover, which affects the sealing between the sealed bowl and the cover.

In order to ensure the sealing effect, the existing splitter cover adopts a new structure and production process. Referring to Fig. 2, an existing device cover firstly injects two parts separately, and then connects the two parts together by welding. Using the method shown in Figure 2 not only increases the number of molds and processes, leading to increased costs, but also prone to produce defective products.

Summary of the invention

Aiming at the insufficient sealing performance of the existing igniter gas cylinder, the utility model provides an igniter gas cylinder with good sealing effect, which effectively improves the sealing performance. Further, optimize other structures of the igniter cylinder.

In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: an igniter gas cylinder with good sealing effect, and the igniter gas cylinder includes:

A body, the body having a containing chamber capable of containing liquefied combustible gas;

The cover is arranged on the upper end of the body, the lower end of the outer periphery of the cover is sealed with the body, the inner part of the cover has a hollow part, the cover is integrally injection-molded, and the outer edge of the lower end of the hollow part has For the cold feed head, the hollow part has a hollow hole, and the hollow hole includes an upper section, a middle section and a lower section;

A sealed bowl, the sealed bowl is arranged in the lower section of the hollow hole of the cover;

The air valve assembly, the air valve assembly is arranged in the hollow hole;

The head cover is arranged on the device cover.

The igniter gas cylinder of the utility model has an integral injection molding of the lid and the outer edge of the lower end of the hollow part of the lid has a cold material head formed by injection molding, which transfers the weld marks originally produced in the hollow hole of the lid adjacent to the sealing bowl to the lid. The outer edge of the lower end of the hollow part of the cover prevents the welding marks from causing air leakage on the cover, improves the pressure resistance of the gas cylinder, and ensures the sealing effect.

As an improvement, the lower section of the hollow hole has a conical cylindrical sealing surface.

As an improvement, the upper section of the hollow hole is longer than the middle section of the hollow hole, and the diameter of the upper section of the hollow hole is larger than the middle section of the hollow hole.

As an improvement, the air valve assembly includes an air valve string, a sealing ring arranged on the air valve string, a flat gasket and a compression spring, the sealing ring seals the air valve string and the device cover, and the air valve string There is a channel part, the center of the channel part has an air outlet channel with a closed lower end, and the side of the channel part has an air inlet hole communicating with the air outlet channel. During the descending process of the air valve column, the sealing bowl is removed from the lower section of the hollow hole so that Air intake holes can be used for air intake.

As an improvement, the lower end of the valve column has a clamping part, the small-diameter cylindrical section of the clamping part is sealed with the sealing bowl, and the large-diameter section of the clamping part is located below the sealing bowl.

As an improvement, the large-diameter section of the clamping portion has a guiding inclined surface.

As an improvement, the valve column has a matching section that is clearance fit with the upper section of the hollow hole and a mounting section located below the matching section, the outer diameter of the mounting section is smaller than the outer diameter of the matching section, the compression spring, the flat gasket and the sealing ring Set in the upper section of the hollow hole in order from top to bottom.

As an improvement, the body and the cover are made of AS resin, and the body and the cover are welded and sealed.

As an improvement, the upper end of the cover has a step, and the head cover is tightly fitted with the cover.

As an improvement, the lower part of the inner end of the head cover has a plurality of ribs.

The beneficial effects of the igniter gas cylinder of the utility model are as follows: the welding mark originally produced in the hollow hole of the cover near the sealing bowl is transferred to the outer edge of the lower end of the hollow part of the cover, the welding mark is far from the sealing surface, and the welding mark is not It will affect the sealing between the sealed bowl and the cover, improve the pressure resistance of the gas cylinder, and ensure the sealing effect.

Description of the drawings

Fig. 1 is a cross-sectional view of a cover of a conventional igniter gas cylinder.

Fig. 2 is a cross-sectional view of the cover of another conventional igniter gas cylinder.

Figure 3 is a cross-sectional view of the igniter gas cylinder of the first embodiment of the present invention.

Fig. 4 is a cross-sectional view of the body of the igniter gas cylinder in the first embodiment of the present invention.

Fig. 5 is a cross-sectional view of the cover of the igniter gas cylinder according to the first embodiment of the present invention.

Fig. 6 is a cross-sectional view of the gas valve assembly of the igniter gas cylinder in the first embodiment of the present invention.

Fig. 7 is a cross-sectional view of the gas valve column of the gas valve assembly of the igniter gas cylinder in the first embodiment of the present invention.

Fig. 8 is a cross-sectional view of the head cover of the igniter gas cylinder in the first embodiment of the present invention.

In the figure, 1. body; 2. cover; 21, hollow hole; 211, upper section; 212, middle section; 213, lower section; 22, cold head; 3. sealing bowl; 4. air valve assembly; 41, air Spool; 411, channel part; 4111, mating section; 4112, mounting section; 4113, air outlet channel; 4114, air inlet; 412, clamping part; 42, compression spring; 43, flat gasket; 44, sealing ring ; 5. Head cover; 51, convex ribs.

Detailed ways

The technical solutions of the embodiments of the present utility model are explained and described below in conjunction with the drawings of the embodiments of the present utility model. However, the following embodiments are only preferred embodiments of the present utility model, and not all of them. Based on the examples in the implementation manners, other examples obtained by those skilled in the art without creative work shall fall within the protection scope of the present invention.

Referring to Figures 3 to 8, the igniter gas cylinder with good sealing effect of the present invention includes:

The air valve assembly, the air valve assembly is arranged in the hollow hole;

The head cover is arranged on the device cover.

Example one

Referring to Figures 3 to 8, the igniter gas cylinder with good sealing effect according to the first embodiment of the present invention, the igniter gas cylinder includes:

The body 1, the body 1 has a containing chamber capable of containing liquefied combustible gas;

The device cover 2 is provided at the upper end of the device body 1, the lower end of the outer periphery of the device cover 2 is sealed and connected with the device body 1, the inner part of the device cover 2 has a hollow part, and the device cover 2 is integrally injection-molded, so The outer edge of the lower end of the hollow part is provided with a cold material head 22, the hollow part has a hollow hole 21, and the hollow hole 21 includes an upper section 211, a middle section 212 and a lower section 213;

A sealed bowl 3, which is provided in the lower section 213 of the hollow hole 21 of the cover 2;

The air valve assembly 4, the air valve assembly 4 is arranged in the hollow hole 21;

The head cover 5 is arranged on the device cover 2.

As an improvement, there is a certain distance between the cold head 22 and the lower section 213 of the hollow hole 21, so as to ensure that the inner wall of the lower section 213 of the hollow hole 21 is smooth and has no weld marks.

As an improvement, the lower section 213 of the hollow hole 21 has a conical cylindrical sealing surface.

As an improvement, the upper section 211 of the hollow hole 21 is longer than the middle section 212 of the hollow hole 21, and the upper section 211 of the hollow hole 21 has a larger diameter than the middle section 212 of the hollow hole 21.

As an improvement, the air valve assembly 4 includes an air valve column 41, a sealing ring 44 arranged on the air valve column 41, a flat gasket 43 and a compression spring 42. The sealing ring 44 connects the air valve column 41 and the device cover 2 The air valve stem 41 has a channel portion 411, the center of the channel portion 411 has an air outlet channel 4113 with a closed lower end, and the side of the channel portion 411 has an air inlet 4114 communicating with the air outlet channel 4113. During the descending process of the spool 41, the sealing bowl 3 is removed from the lower section 213 of the hollow hole 21 so that the air inlet hole 4114 can take in air.

As an improvement, the lower end of the valve column 41 has a clamping portion 412, a small-diameter cylindrical section of the clamping portion 412 is sealed with the sealing bowl 3, and a large-diameter section of the clamping portion 412 is located below the sealing bowl 3.

As an improvement, the large-diameter section of the clamping portion 412 has a guiding inclined surface to facilitate the clamping portion 412 of the air valve column 41 to pass through the sealing bowl 3.

As an improvement, the valve column 41 has a matching section 4111 that is clearance fit with the upper section 211 of the hollow hole 21 and a mounting section 4112 located below the matching section 4111. The outer diameter of the mounting section 4112 is smaller than the outer diameter of the matching section 4111. The spring 42, the flat washer 43 and the sealing ring 44 are arranged in the upper section 211 of the hollow hole 21 in order from top to bottom.

As an improvement, both the body 1 and the cover 2 are made of AS resin, and the body 1 and the cover 2 are welded and sealed.

As an improvement, the upper end of the cover 2 has a step, and the head cover 5 is tightly fitted with the cover 2.

As an improvement, the lower part of the inner end of the head cover 5 has a plurality of ribs 51, and the ribs 51 ensure the tight fit between the head cover 5 and the device cover 2.

The working principle of the gas cylinder of the igniter in the first embodiment of the present invention is: insert the gas valve column 41 into the igniter, and the gas valve column 41 is forced to drive the sealing bowl 3 out of the lower section 213 of the hollow hole 21 of the cover 2 At the same time, the compression spring 42 is compressed. After the sealing bowl 3 is moved out, the gas enters between the valve column 41 and the cover 2 from the gap between the sealing bowl 3 and the cover 2 and passes through the air inlet 4114 on the side of the valve column 41, The air outlet channel 4113 flows into the igniter; after the inflation is completed, the air valve column 41 and the sealing bowl 3 are reset under the action of the compression spring 42, and the sealing bowl 3 seals the air valve column 41 and the device cover 2 again.

The beneficial effects of the igniter gas cylinder of the first embodiment of the present invention are as follows: the weld line originally generated in the hollow hole 21 of the cover 2 adjacent to the sealing bowl 3 is transferred to the outer edge of the lower end of the hollow part of the cover 2, and the weld line is sealed away The surface is far away, and the welding marks will not affect the sealing between the sealing bowl 3 and the cover 2, which improves the pressure resistance of the gas cylinder and ensures the sealing effect; compared to the pre-made two parts and then welded the production device The production efficiency and yield rate are greatly improved.

Claims

The igniter gas cylinder with good sealing effect is characterized in that: the igniter gas cylinder includes:

A body (1), the body (1) having a containing chamber capable of containing liquefied combustible gas;

The device cover (2), the device cover (2) is arranged on the upper end of the device body (1), the lower end of the outer circumference of the device cover (2) is sealed and connected with the body (1), and the device cover (2) has a hollow inside Part, the cover (2) is integrally injection-molded, the outer edge of the lower end of the hollow part has a cold head (22), the hollow part has a hollow hole (21), the hollow hole (21) includes an upper section (211) ), middle paragraph (212) and lower paragraph (213);

A sealed bowl (3), the sealed bowl (3) is arranged in the lower section (213) of the hollow hole (21) of the device cover (2);

The air valve assembly (4), the air valve assembly (4) is arranged in the hollow hole (21);

The head cover (5) is arranged on the device cover (2).
The igniter gas cylinder with good sealing effect according to claim 1, characterized in that the lower section (213) of the hollow hole (21) has a conical cylindrical sealing surface.
The igniter gas cylinder with good sealing effect according to claim 2, characterized in that: the upper section (211) of the hollow hole (21) is longer than the middle section (212) of the hollow hole (21), and the upper section of the hollow hole (21) (211) The diameter is larger than the middle section (212) of the hollow hole (21).
The igniter gas cylinder with good sealing effect according to claim 3, characterized in that: the gas valve assembly (4) comprises a gas valve column (41), and a sealing ring (44) arranged on the gas valve column (41) ), a flat gasket (43) and a compression spring (42). The sealing ring (44) seals the air valve stem (41) and the device cover (2), and the air valve stem (41) has a channel portion (411), the center of the channel portion (411) has an air outlet channel (4113) with a closed lower end, the side of the channel portion (411) has an air inlet (4114) communicating with the air outlet channel (4113), the air valve During the descending process of the column (41), the sealing bowl (3) is removed from the lower section (213) of the hollow hole (21) so that the air inlet hole (4114) can be air-intaken.
The igniter gas cylinder with good sealing effect according to claim 4, characterized in that: the lower end of the gas valve column (41) has a clamping portion (412), and the small-diameter cylindrical section of the clamping portion (412) and The sealing bowl (3) is sealed, and the large diameter section of the clamping portion (412) is located below the sealing bowl (3).
The igniter gas cylinder with good sealing effect according to claim 5, characterized in that the large diameter section of the clamping portion (412) has a guiding inclined surface.
The igniter gas cylinder with good sealing effect according to claim 4, characterized in that: the gas valve column (41) has a matching section (4111) that is in clearance fit with the upper section (211) of the hollow hole (21) and is located in the matching section. The mounting section (4112) below the section (4111), the outer diameter of the mounting section (4112) is smaller than the outer diameter of the mating section (4111), the compression spring (42), the flat gasket (43) and the sealing ring (44) It is arranged in the upper section (211) of the hollow hole (21) in order from top to bottom.
The igniter gas cylinder with good sealing effect according to claim 1, characterized in that: the body (1) and the cover (2) are made of AS resin, and the body (1) and the cover are made of AS resin. (2) Welding and sealing.
The igniter gas cylinder with good sealing effect according to claim 1, characterized in that the upper end of the cover (2) has a step, and the head cover (5) is tightly fitted with the cover (2).
The igniter gas cylinder with good sealing effect according to claim 1, characterized in that: the lower part of the inner end of the head cover (5) has a plurality of ribs (51).