Pressure vessel, lighter and ignition gun

Abstract

This application claims protection for a pressure vessel, a lighter, and an ignition gun. The pressure vessel includes a gas box and a base plate. The gas box includes a gas box body and a threaded sleeve, which is housed within the gas box body and integrally injection molded with the gas box body. The threaded sleeve is used to connect to an exhaust valve. The base plate is connected and sealed to the gas box body, and a cavity is formed between the gas box body and the base plate to contain fuel. The cavity communicates with the threaded sleeve so that the exhaust valve connected to the threaded sleeve can control the release of fuel. This not only reduces the manufacturing complexity and production cost of the gas box but also ensures the accuracy of the threaded sleeve's assembly position on the gas box body, avoiding tolerance fluctuations and cracking risks between the threaded sleeve and the gas box body. This improves the sealing performance and assembly reliability of the pressure vessel, effectively solving common problems such as poor flameout and ignition failure, and providing a reliable guarantee for the performance improvement of lighters, ignition guns, and other products.

Description

Technical Field

[0001] This utility model belongs to the technical field of fuel containers, and in particular relates to a pressure vessel, a lighter and an ignition gun. Background Technology

[0002] In smoking accessories such as lighters and ignition guns, pressure vessels refer to containers used to store fuels such as butane, and are made of engineering plastics such as AS (acrylonitrile-styrene copolymer), POM (polyoxymethylene), and nylon.

[0003] Currently, conventional manufacturing processes for pressure vessels employ ultrasonic welding to assemble separately manufactured threaded sleeves, gas boxes, and base plates, storing butane through a cavity enclosed by the gas box and base plate. The threaded sleeve connects to an outlet valve to control gas release. However, this process has significant drawbacks: First, the separate production and subsequent assembly of the threaded sleeve and gas box increase manufacturing complexity and cost; second, issues such as misalignment of the threaded sleeve within the gas box and unstable welding height (significant tolerance fluctuations) can easily lead to quality defects such as cracking and poor sealing, subsequently causing operational problems like ignition failure and pressure malfunction. Utility Model Content

[0004] In view of this, it is necessary to provide a pressure vessel, a lighter, and an ignition gun for solving the above-mentioned technical problems.

[0005] A pressure vessel, used in a lighter or ignition gun, comprising:

[0006] An air box includes an air box body and a threaded sleeve, wherein the threaded sleeve is housed within the air box body and integrally injection molded with the air box body, and wherein the threaded sleeve is used to connect an air outlet valve;

[0007] The base plate is connected and sealed to the gas box body, and the gas box body and the base plate enclose a cavity for containing fuel. The cavity is also connected to the threaded sleeve so that the exhaust valve connected to the threaded sleeve can control the release of the fuel.

[0008] Understandably, integrally injection molding the threaded sleeve with the gas box body allows for one-time molding of both components. This not only reduces the manufacturing complexity and production cost of the gas box but also ensures the precision of the threaded sleeve's assembly position on the gas box body. It avoids tolerance fluctuations and cracking risks between the threaded sleeve and the gas box body, thereby improving the sealing performance and assembly reliability of the pressure vessel. This effectively solves common problems such as poor flameout and ignition, providing a reliable guarantee for performance improvement in products such as lighters and ignition guns.

[0009] In one embodiment, the air box and the base plate are made of the same material, and the material is configured as acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer, polyoxymethylene, or nylon.

[0010] In one embodiment, the injection tolerance when the threaded sleeve and the air box body are integrally injection molded is set to T, where 0≤T≤0.02mm.

[0011] It is understandable that controlling the injection tolerance within 0.02mm when integrally injection molding the threaded sleeve and the main body of the gas box can improve the product quality of the pressure vessel and make the product size control of the pressure vessel more uniform.

[0012] In one embodiment, the threaded sleeve includes a threaded portion and a constricted portion, the constricted portion being disposed on the side of the threaded portion facing the base plate and communicating with the threaded portion, and the center line of the threaded portion and the center line of the constricted portion being disposed on the same straight line.

[0013] The threaded portion is used for threaded connection with the air outlet valve, and the constricted portion is used for sealing against the sealing ring fitted on the air outlet valve.

[0014] In one embodiment, a reinforcing rib is formed on the air box body, the reinforcing rib being disposed on the outside of the threaded sleeve and connected to the threaded sleeve;

[0015] The reinforcing rib extends along the axial direction of the threaded sleeve.

[0016] It is understandable that reinforcing ribs are used to assist in supporting the threaded sleeve. This can not only effectively disperse the assembly stress of the vent valve on the threaded sleeve, but also significantly enhance the deformation resistance of the threaded sleeve.

[0017] In one embodiment, a partition plate is further formed on the air box body, and the partition plate is disposed on the outside of the threaded sleeve;

[0018] The reinforcing rib is connected to the partition plate.

[0019] It is understandable that using partition plates to support the reinforcing ribs provides additional support points for them, which not only improves the reinforcing ribs' own bending resistance but also ensures that the reinforcing ribs maintain stable support performance when subjected to the stress of threaded fittings.

[0020] In one embodiment, the base plate can be inserted into the air box body to assemble and position the base plate onto the air box body.

[0021] It is understandable that using a plug-in connection method to assemble and position the base plate on the air box body not only facilitates the assembly and positioning of the base plate on the air box body, but also ensures the accuracy of the assembly position of the base plate on the air box body, creating conditions for the subsequent assembly and connection between the base plate and the air box body.

[0022] In one embodiment, the base plate is welded to the gas box body.

[0023] It is understandable that the base plate is assembled to the air box body by welding. This facilitates the connection of the base plate to the air box body and ensures the airtightness of the base plate when it is assembled to the air box body.

[0024] This application also provides a lighter, including the pressure vessel described above.

[0025] This application also provides an ignition gun, including the pressure vessel described above.

[0026] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0027] The pressure vessel, lighter, and ignition gun claimed in this application are integrally injection molded with the threaded sleeve and the gas box body. This allows the threaded sleeve and the gas box body to be formed in one step through a mold. This not only reduces the manufacturing complexity and production cost of the gas box, but also ensures the accuracy of the assembly position of the threaded sleeve on the gas box body. It avoids the risk of tolerance fluctuations and cracking between the threaded sleeve and the gas box body, and improves the sealing performance and assembly reliability of the pressure vessel. This effectively solves common problems such as poor flameout and ignition failure, and provides a reliable guarantee for the performance improvement of products such as lighters and ignition guns. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the pressure vessel provided in this application.

[0030] Figure 2 An exploded view of the pressure vessel provided in this application.

[0031] Figure 3 This is a schematic diagram of the lighter provided in this application.

[0032] Reference numerals: 100, pressure vessel; 10, gas box; 11, gas box body; 111, reinforcing rib; 112, partition plate; 12, threaded sleeve; 121, threaded part; 122, constricted part; 20, base plate; 101, accommodating cavity; 110, fuel; 200, exhaust valve; 210, sealing ring; 1000, lighter. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] It should be noted that when a component is said to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or may have an intervening component.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] like Figure 3 As shown, the pressure vessel 100 for which protection is sought in this application specifically refers to the pressure vessel in a lighter 1000 or an ignition gun (not shown).

[0037] like Figures 1 to 3As shown, the pressure vessel 100 provided in this application includes a gas box 10 and a base plate 20. The gas box 10 includes a gas box body 11 and a threaded sleeve 12. The threaded sleeve 12 is housed within the gas box body 11 and integrally injection molded with the gas box body 11. The threaded sleeve 12 is used to connect to the gas outlet valve 200. The base plate 20 is connected and sealed to the gas box body 11, and a receiving cavity 101 is formed between the gas box body 11 and the base plate 20. The receiving cavity 101 is used to contain fuel 110, and the receiving cavity 101 communicates with the threaded sleeve 12 so that the gas outlet valve 200 connected to the threaded sleeve 12 can control the release of fuel 110. Here, the fuel 110 can specifically be butane, propane, or other fuels commonly used in existing lighters 1000, which will not be elaborated here.

[0038] As can be seen from the above, the pressure vessel 100 of this application integrally injection molds the threaded sleeve 12 and the gas box body 11, so that the threaded sleeve 12 and the gas box body 11 can be formed in one step by the mold. This not only reduces the manufacturing complexity and production cost of the gas box 10, but also ensures the accuracy of the assembly position of the threaded sleeve 12 on the gas box body 11, avoiding the risk of tolerance fluctuation and cracking between the threaded sleeve 12 and the gas box body 11. This improves the sealing performance and assembly reliability of the pressure vessel 100, thereby effectively solving common problems such as poor flameout and ignition, and providing a reliable guarantee for the performance improvement of products such as lighters 1000 and ignition guns.

[0039] It should be noted that the pressure vessels in this application all comply with the product testing requirements stipulated in international standards ISO 9994, Japanese standards JIS 4801 and JIS 4802, and American CPSC standards in the lighter industry. Specifically, these include requirements such as the pressure vessel 100 being able to withstand a high temperature test of 65°C, internal pressure resistance test, and 1.5-meter drop test. Here, the pressure vessel 100 is able to withstand a high temperature test reaching 70°C.

[0040] In this application, the injection molding tolerance of the threaded sleeve 12 and the gas box body 11 integrally injection molded in the pressure vessel 100 is set as T, where 0≤T≤0.02mm. That is, this application controls the injection molding tolerance of the threaded sleeve 12 and the gas box body 11 integrally injection molded within 0.02mm. This can improve the product quality of the pressure vessel 100, make the perpendicularity of the threaded sleeve 12 when assembled in the gas box body 11 better, thereby making the flame of the lighter 1000 or ignition gun using the pressure vessel 100 straighter when working, and making the product size control of the pressure vessel 100 more uniform.

[0041] In one embodiment, the air box 10 and the base plate 20 are made of the same material, and the material is configured as acrylonitrile-styrene copolymer (AS), acrylonitrile-butadiene-styrene copolymer (ABS), polyoxymethylene (POM), or nylon (PA). That is, the air box 10 and the base plate 20 in this embodiment can be made of conventional engineering plastics such as acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer, polyoxymethylene, or nylon.

[0042] like Figure 1 , Figure 2 As shown, in one embodiment, a reinforcing rib 111 is formed on the air box body 11, and the reinforcing rib 111 extends along the axial direction of the threaded sleeve 12; and the reinforcing rib 111 is disposed on the outer side of the threaded sleeve 12 and connected to the threaded sleeve 12. That is, in this embodiment, the air box body 11 uses the reinforcing rib 111 to assist in supporting the threaded sleeve 12, which can not only effectively disperse the assembly stress of the air outlet valve 200 borne by the threaded sleeve 12, but also significantly enhance the deformation resistance of the threaded sleeve 12. Here, the number of reinforcing ribs 111 is configured as one, and the reinforcing rib 111 is flush with the threaded sleeve 12. It can be understood that in other embodiments, the number of reinforcing ribs 111 may also be multiple, and the multiple reinforcing ribs 111 are arranged at intervals around the circumference of the threaded sleeve 12.

[0043] like Figure 1 , Figure 2 As shown, in this embodiment, a partition plate 112 is also formed on the air box body 11. The partition plate 112 is disposed on the outside of the threaded sleeve 12 and is used to separate a relatively independent chamber in the air box body 11 to accommodate the threaded sleeve 12. The reinforcing rib 111 is connected to the partition plate 112, so that the air box body 11 can use the partition plate 112 to support the reinforcing rib 111. This provides additional support points for the reinforcing rib 111, which not only improves the bending resistance of the reinforcing rib 111 itself, but also ensures that the reinforcing rib 111 maintains stable support performance when subjected to the assembly stress of the threaded sleeve 12.

[0044] like Figure 1 , Figure 2 As shown, in one embodiment, the threaded sleeve 12 includes a threaded portion 121 and a constricted portion 122. The constricted portion 122 is disposed on the side of the threaded portion 121 facing the base plate 20 and communicates with the threaded portion 121. The centerline of the threaded portion 121 and the centerline of the constricted portion 122 are on the same straight line. The threaded portion 121 is used for threaded connection with the vent valve 200, and the constricted portion 122 is used for abutting and sealing with the sealing ring 210 fitted on the vent valve 200, ensuring the sealing performance of the vent valve 200 when assembled on the threaded sleeve 12, thus meeting the usage requirements of lighters, ignition guns, etc. Here, the threaded portion 121 has an internal thread for screwing into the external thread of the vent valve 200.

[0045] like Figure 1 , Figure 2 As shown, in one embodiment, the base plate 20 can be inserted and engaged with the air box body 11, thereby assembling and positioning the base plate 20 onto the air box body 11. This not only facilitates the assembly and positioning of the base plate 20 onto the air box body 11, but also ensures the accuracy of the assembly position of the base plate 20 on the air box body 11, creating conditions for the subsequent assembly and connection between the base plate 20 and the air box body 11.

[0046] In this embodiment, the base plate 20 is connected to the gas box body 11 by welding, specifically using ultrasonic welding to achieve the assembly connection between the base plate 20 and the gas box body 11. This facilitates the assembly of the base plate 20 onto the gas box body 11 and ensures the sealing performance of the base plate 20 during assembly. It is understood that in other embodiments, the base plate 20 may also be assembled to the gas box body 11 using an interference fit. To ensure the sealing performance between the base plate 20 and the gas box body 11, a sealing ring can be added between the base plate 20 and the gas box body 11; however, this will not be elaborated upon here.

[0047] like Figure 3 As shown, this application also provides a lighter 1000, which includes the pressure vessel 100 described above.

[0048] In addition, this application also provides an ignition gun, including the pressure vessel 100 described above.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.

Claims

1. A pressure vessel, used in a lighter (1000) or ignition gun, characterized in that, Pressure vessel (100) includes: The air box (10) includes an air box body (11) and a threaded sleeve (12). The threaded sleeve (12) is housed in the air box body (11) and integrally injection molded with the air box body (11). The threaded sleeve (12) is used to connect the air outlet valve (200). The base plate (20) is connected and sealed to the gas box body (11), and the gas box body (11) and the base plate (20) enclose a cavity (101) for containing fuel (110). The cavity (101) is connected to the threaded sleeve (12) so that the exhaust valve (200) connected to the threaded sleeve (12) can control the release of the fuel (110).

2. The pressure vessel according to claim 1, characterized in that, The air box (10) and the base plate (20) are made of the same material, and the material is configured as acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer, polyoxymethylene or nylon.

3. The pressure vessel according to claim 1, characterized in that, When the threaded sleeve (12) and the air box body (11) are integrally injection molded, the injection tolerance is set to T, where 0≤T≤0.02mm.

4. The pressure vessel according to claim 1, characterized in that, The threaded sleeve (12) includes a threaded portion (121) and a constricted portion (122). The constricted portion (122) is disposed on the side of the threaded portion (121) facing the base plate (20) and communicates with the threaded portion (121). Furthermore, the center line of the threaded portion (121) and the center line of the constricted portion (122) are disposed on the same straight line. The threaded portion (121) is used to connect with the air outlet valve (200) by thread, and the constricted portion (122) is used to abut and seal with the sealing ring (210) fitted on the air outlet valve (200).

5. The pressure vessel according to claim 1, characterized in that, A reinforcing rib (111) is formed on the main body (11) of the air box. The reinforcing rib (111) is disposed on the outside of the threaded sleeve (12) and connected to the threaded sleeve (12). The reinforcing rib (111) extends along the axial direction of the threaded sleeve (12).

6. The pressure vessel according to claim 5, characterized in that, A partition plate (112) is also formed on the main body (11) of the air box, and the partition plate (112) is disposed on the outside of the threaded sleeve (12); The reinforcing rib (111) is connected to the partition plate (112).

7. The pressure vessel according to claim 1, characterized in that, The base plate (20) can be inserted into the air box body (11) to assemble and position the base plate (20) onto the air box body (11).

8. The pressure vessel according to claim 7, characterized in that, The base plate (20) is welded to the air box body (11).

9. A lighter, characterized in that, The pressure vessel (100) includes any one of claims 1 to 8.

10. A lighter, characterized in that, The pressure vessel (100) includes any one of claims 1 to 8.

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