Mounting structure for a plastic straight-flush lighter

Abstract

This utility model relates to an installation structure for a plastic direct-fire lighter, including a gas tank housing, a zinc alloy gas valve, a zinc alloy screw, and a plastic tube. The gas tank housing has a through mounting hole. The mounting hole is divided into a first section, a second section, a third section, and a fourth section from top to bottom. A positioning groove is formed on the inner wall of the fourth section, and the width of the positioning groove is greater than the width of the third section. At least one sealing ring is provided in the middle of the zinc alloy gas valve, and the middle of the zinc alloy gas valve is limited in the first section, with the sealing ring in sealing contact with the inner wall of the first section. The lower part of the zinc alloy gas valve is an internally threaded connection section located in the second section. The upper part of the zinc alloy screw is threadedly connected to the internally threaded connection section. Through the above design, the internal lighter head is eliminated, the structure is simplified, the cost is reduced, and assembly is convenient. The use of a zinc alloy screw and a zinc alloy gas valve reduces costs, provides a stable flame, quick extinguishing, and adjustable flame size.

Description

Technical Field

[0001] This utility model belongs to the field of lighter technology, specifically relating to the installation structure of a plastic direct-fire lighter. Background Technology

[0002] Current plastic direct-fire lighters suffer from serious defects such as flame shrinkage, unstable flame, insensitive adjustment of flame size, and slow extinguishing time. Furthermore, the complex connection structure of the gas box, gas valve, internal motor head, and built-in screw in plastic direct-fire lighters results in low assembly efficiency. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an installation structure for a plastic direct-fire lighter, which solves the technical problems of complex structure and unstable flame in current plastic direct-fire lighters.

[0004] To solve the above problems, the technical solution of this utility model is: an installation structure for a plastic direct-fire lighter, comprising: The air box shell has a through mounting hole inside; the mounting hole is divided into a first hole section, a second hole section, a third hole section and a fourth hole section from top to bottom; a positioning groove is opened on the inner side wall of the fourth hole section, and the width of the positioning groove is greater than the width of the third hole section; A zinc alloy vent valve has at least one sealing ring in its middle section, which is confined in the first hole section, and the sealing ring is in sealing contact with the inner wall of the first hole section; the lower part of the zinc alloy vent valve is an internal threaded connection section, which is located in the second hole section. A zinc alloy screw, the upper part of which is threaded to the internal thread connection section; a filter screen and an air regulating sponge are installed from top to bottom between the upper end of the zinc alloy screw and the internal thread connection section; The plastic tube is located in the third hole section. The upper end of the plastic tube is sealed to the lower part of the zinc alloy screw. The lower end of the plastic tube is fixedly equipped with a limiting flat platform. The limiting flat platform is positioned in the positioning groove in the fourth hole section to limit the rotation of the limiting flat platform. The upper end of the limiting flat platform abuts against the lower end wall of the third hole section for limiting.

[0005] Preferably, the bottom of the gas box housing has an installation opening for installing a bottom cover.

[0006] Preferably, an annular limiting groove is formed on the outer peripheral wall of the middle part of the zinc alloy vent valve, and a sealing ring is installed in the annular limiting groove.

[0007] Preferably, the diameter of the first orifice is larger than the diameter of the second orifice, and the outer diameter of the middle part of the zinc alloy vent valve is larger than the diameter of the second orifice.

[0008] Preferably, the diameter of the second hole section is larger than the diameter of the third hole section, and the outer diameter of the internal thread connection section of the zinc alloy vent valve is larger than the diameter of the third hole section.

[0009] Preferably, the material of the gas box shell is AS resin.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention eliminates the internal unit head and the threaded connection between the exhaust valve and the gas box housing, simplifying the structure and improving assembly efficiency. The use of a zinc alloy exhaust valve and zinc alloy screw reduces costs, provides a stable flame, rapid extinguishing, and adjustable flame size. A limiting platform at the bottom of the plastic tube engages with a positioning groove to prevent rotation of the zinc alloy screw. The structure is simple, assembly is convenient, and the zinc alloy exhaust valve and zinc alloy screw are stably installed. Attached Figure Description

[0011] Figure 1 This is a perspective view of the gas box housing in the embodiment; Figure 2 This is a perspective view of the installation structure in the embodiment; Figure 3 This is a schematic diagram of the bottom of the gas box housing in the embodiment; Figure 4 This is a cross-sectional schematic diagram of the air box shell and the mounting structure in the embodiment; Figure 5 This is a cross-sectional schematic diagram of the gas box shell in the embodiment; Figure 6 This is an exploded view of the installation structure in the embodiment.

[0012] Reference numerals in the attached drawings: 1. Air box housing; 11. Mounting hole; 111. First hole section; 112. Second hole section; 113. Third hole section; 114. Fourth hole section; 115. Positioning groove; 2. Zinc alloy exhaust valve; 21. Internal threaded connection section; 22. Annular limiting groove; 3. Zinc alloy screw; 4. Plastic tube; 41. Limiting flat platform; 5. Sealing ring; 6. Filter screen; 7. Air regulating sponge; 8. Bottom cover. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0014] Example: Figures 1-6As shown, this embodiment provides an installation structure for a plastic direct-fire lighter, including a gas tank housing 1, a zinc alloy gas valve 2, a zinc alloy screw 3, and a plastic tube 4; the gas tank housing 1 has a through mounting hole 11; the mounting hole 11 is divided into a first hole section 111, a second hole section 112, a third hole section 113, and a fourth hole section 114 from top to bottom; a positioning groove 115 is formed on the inner wall of the fourth hole section 114, and the width of the positioning groove 115 is greater than the width of the third hole section 113; at least one sealing ring 5 is provided in the middle of the zinc alloy gas valve 2, and the middle of the zinc alloy gas valve 2 is limited in the first hole section 111, and the sealing ring 5 is in sealing contact with the inner wall of the first hole section 111; the zinc alloy... The lower part of the gold-plated air valve 2 is an internally threaded connection section 21, which is located in the second hole section 112; the upper part of the zinc alloy screw 3 is threadedly connected to the internally threaded connection section 21; a filter screen 6 and an air regulating sponge 7 are arranged sequentially from top to bottom between the upper end of the zinc alloy screw 3 and the internally threaded connection section 21; the plastic tube 4 is located in the third hole section 113, and the upper end of the plastic tube 4 is sealed to the lower part of the zinc alloy screw 3, and a limiting flat platform 41 is fixedly installed at the lower end of the plastic tube 4; the limiting flat platform 41 is positioned in the positioning groove 115 in the fourth hole section 114 to limit the rotation of the limiting flat platform 41, and the upper end of the limiting flat platform 41 abuts against the lower end wall of the third hole section 113 for limitation.

[0015] By implementing the above design, the external thread of the zinc alloy exhaust valve 2 is eliminated. During installation, the zinc alloy exhaust valve 2 is directly placed in the first hole section 111 and threadedly connected and fixed to the zinc alloy screw 3. This reduces the stress surface of the gas box housing 1, extends the service life of the gas box housing 1, and improves assembly efficiency. The internal unit head is eliminated, simplifying the structure, reducing costs, and facilitating assembly. The use of the zinc alloy screw 3 and zinc alloy exhaust valve 2 reduces costs, provides a stable flame, rapid extinguishing, and adjustable flame size. The use of the filter screen 6 and the air-regulating sponge 7 ensures high sensitivity to changes in flame size. The airflow passing through the threaded gaps and the screen increases the vaporization rate of the liquid gas, reduces the cooling effect on the T-shaped rubber, improves the instantaneous sealing effect, and shortens the extinguishing time. The plastic tube 4 is inserted below the liquid surface in the gas box to stabilize the airflow and pressure. Specifically, the zinc alloy screw 3 has an internal channel connecting the zinc alloy exhaust valve 2 and the plastic tube 4. The limiting flat platform 41 of the plastic tube 4 is limited in the positioning groove 115 and abuts against the lower end wall of the third hole section 113 to position the plastic tube 4, zinc alloy screw 3 and zinc alloy exhaust valve 2, preventing the zinc alloy screw 3 from rotating and preventing the rocker arm from lifting the exhaust needle during ignition, causing the zinc alloy exhaust valve 2 to rise as well. This achieves relative fixation of the zinc alloy screw 3, zinc alloy exhaust valve 2 and air box housing 1, and the exhaust needle and rocker arm can cooperate to open and close the valve normally.

[0016] In the mounting structure of a plastic direct-fire lighter according to this embodiment, the bottom of the gas tank housing 1 has a mounting opening for mounting a bottom cover 8. The bottom cover 8 seals the inside of the gas tank housing 1, and the mounting opening allows the plastic tube 4 and the zinc alloy screw 3 to extend into it.

[0017] In the installation structure of a plastic direct-fire lighter according to this embodiment, an annular limiting groove 22 is formed on the outer peripheral wall of the middle part of the zinc alloy gas valve 2, and a sealing ring 5 is installed in the annular limiting groove 22. This improves the sealing effect between the zinc alloy gas valve 2 and the first hole section 111.

[0018] In the mounting structure of a plastic direct-fire lighter according to this embodiment, the diameter of the first hole section 111 is larger than the diameter of the second hole section 112, and the outer diameter of the middle part of the zinc alloy gas valve 2 is larger than the diameter of the second hole section 112. This arrangement limits the middle part of the zinc alloy gas valve 2 in the first hole section 111, making the zinc alloy gas valve 2 installed stably.

[0019] In the mounting structure of a plastic direct-fire lighter according to this embodiment, the diameter of the second hole section 112 is larger than the diameter of the third hole section 113, and the outer diameter of the internal threaded connection section 21 of the zinc alloy gas valve 2 is larger than the diameter of the third hole section 113. This arrangement ensures that the internal threaded connection section 21 of the zinc alloy gas valve 2 is confined within the second hole section 112, thus stabilizing the installation of the zinc alloy gas valve 2.

[0020] In the mounting structure of a plastic direct-fire lighter of this embodiment, the gas tank shell 1 is made of AS resin. AS resin is cheaper, easier to inject, and reusable than transparent nylon PA66. Specifically, transparent nylon PA66 costs approximately 60,000 yuan per ton, while AS resin costs approximately 10,000 yuan per ton, making AS resin significantly cheaper. Furthermore, AS resin has several times the injection molding efficiency of transparent nylon. Since AS resin is brittle and cannot withstand direct stress, it is prone to cracking. By eliminating the threaded connection between the zinc alloy exhaust valve 2 and the gas tank shell 1, the stress-bearing surface of the gas tank shell 1 is reduced, extending its service life.

Claims

1. A mounting structure of a plastic straight-flush lighter, characterized by comprising: include: The air box housing (1) has a through mounting hole (11) inside; the mounting hole (11) is divided into a first hole section (111), a second hole section (112), a third hole section (113) and a fourth hole section (114) from top to bottom; a positioning groove (115) is opened on the inner side wall of the fourth hole section (114), and the width of the positioning groove (115) is greater than the width of the third hole section (113); A zinc alloy vent valve (2) is provided with at least one sealing ring (5) in the middle part of the zinc alloy vent valve (2). The middle part of the zinc alloy vent valve (2) is limited in the first hole section (111). The sealing ring (5) is in sealing contact with the inner wall of the first hole section (111). The lower part of the zinc alloy vent valve (2) is an internal thread connection section (21). The internal thread connection section (21) is located in the second hole section (112). A zinc alloy screw (3) is threaded to the upper part of the internal threaded connection section (21); a filter screen (6) and an air regulating sponge (7) are arranged sequentially from top to bottom between the upper end of the zinc alloy screw (3) and the internal threaded connection section (21); Plastic tube (4) is located in the third hole section (113). The upper end of the plastic tube (4) is sealed to the lower part of the zinc alloy screw (3). The lower end of the plastic tube (4) is fixedly provided with a limiting flat platform (41). The limiting flat platform (41) is positioned in the positioning groove (115) in the fourth hole section (114) to limit the rotation of the limiting flat platform (41). The upper end of the limiting flat platform (41) abuts against the lower end wall of the third hole section (113) for limitation.

2. A mounting structure for a plastic straight-flush lighter according to claim 1, wherein The bottom of the air box housing (1) has an installation opening for mounting the bottom cover (8).

3. The mounting structure for a plastic straight-flush lighter according to claim 1, wherein An annular limiting groove (22) is opened on the outer peripheral wall of the middle part of the zinc alloy exhaust valve (2), and a sealing ring (5) is installed in the annular limiting groove (22).

4. The mounting structure for a plastic straight-flush lighter according to claim 1, wherein The diameter of the first hole section (111) is larger than the diameter of the second hole section (112), and the outer diameter of the middle part of the zinc alloy vent valve (2) is larger than the diameter of the second hole section (112).

5. A mounting structure for a plastic straight-flush lighter according to claim 4, wherein The diameter of the second hole section (112) is greater than the diameter of the third hole section (113), and the outer diameter of the internal threaded connection section (21) of the zinc alloy vent valve (2) is greater than the diameter of the third hole section (113).

6. The mounting structure for a plastic straight-flush lighter according to claim 1, wherein The material of the air box shell (1) is AS resin.

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