Improved structure of plastic direct-impact lighter

Abstract

The utility model discloses an improved structure of a plastic direct impact lighter, which comprises an inner machine head, a zinc alloy gas outlet valve, a zinc alloy screw rod, a plastic pipe and a gas box shell, the inner machine head adopts a thread-free design with a smooth inner part, and the lower part of the zinc alloy gas outlet valve is sleeved in the inner machine head from the upper part of the inner machine head; after a threaded section on the upper portion of the zinc alloy screw extends into the inner machine head from the lower portion of the inner machine head, the threaded section is connected into a threaded hole in the lower portion of the zinc alloy air outlet valve in a threaded mode, the plastic pipe is connected to an air pipe connecting portion on the lower portion of the zinc alloy screw in an inserted mode, and a clamping groove is formed in the hole wall of the lower portion of the inner machine head. A clamping block clamped into the clamping groove is arranged outside the zinc alloy screw rod; the lighter has the advantages that the structure is novel, the production cost of the lighter is reduced, flames are stabilized, the problems of shrinkage, slow flameout and insensitive size adjustment in the prior art are solved, the flame quality of the lighter is improved, and the quality of the lighter product is improved.

Description

Technical Field

[0001] The utility model relates to a lighter, in particular to an improved structure of a plastic direct-injection lighter. Background Art

[0002] Ningbo and Wenzhou are two of the largest lighter production bases in China. At present, Ningbo's disposable lighters and plastic direct-impulse lighters have serious defects such as shrinking flames, unstable flames, insensitive flame adjustment, and slow flameout time. Plastic direct-impulse lighters currently generally use a groove on the side of the air outlet needle for exhaust. The disadvantage of this structure is that the exhaust at the root of the needle is prone to deflagration when the flame is turned off, which is dangerous. At the same time, there is also the defect of shrinking flames. When the ignition is continuously operated, the flame will become smaller and smaller, especially in winter when the temperature is low. This situation is particularly obvious. Although the metal air inlet and outlet structure inside the lighters produced in Wenzhou does not have the above defects, it is costly. In the case of low added value and low profit of plastic direct-impulse lighters, it virtually increases the production cost and burden of the manufacturer. Therefore, the market needs a set of low-cost lighter air box stable outlet structure that can optimize existing defects. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an improved structure of a plastic direct-injection lighter in view of the deficiencies in the prior art.

[0004] In order to achieve the above purpose, the measures taken by the utility model are:

[0005] An improved structure of a plastic direct-injection lighter comprises an inner machine head, a zinc alloy air outlet valve, a zinc alloy screw, a plastic tube and an air box shell, an ignition device and a lighter cover are installed on the air box shell, the inner machine head adopts a smooth internal non-threaded design, the inner machine head is sleeved in the air box shell, the lower part of the zinc alloy air outlet valve is sleeved into the inner machine head from the upper part of the inner machine head, after the threaded section of the upper part of the zinc alloy screw extends into the inner machine head from the lower part of the inner machine head, the threaded section is connected to the threaded hole at the lower part of the zinc alloy air outlet valve, a filter screen and an air regulating sponge are arranged in the gap between the top of the threaded section and the top of the threaded hole, the plastic tube is plugged and connected to the air pipe connecting part at the lower part of the zinc alloy screw, a card slot is opened on the hole wall at the lower part of the inner machine head, a card block for being inserted into the card slot is arranged on the outside of the zinc alloy screw, an air passage for connecting the plastic tube and the zinc alloy air outlet valve is arranged in the zinc alloy screw, and the lower part of the plastic tube extends into the air box shell;

[0006] After the inner machine head and the zinc alloy screw are welded and connected, the zinc alloy screw is fixedly connected to the air box shell;

[0007] On the outer wall of the zinc alloy gas outlet valve, two first sealing grooves are provided. A first sealing ring is sleeved in the first sealing groove, and the first sealing ring is pressed between the zinc alloy gas outlet valve and the inner wall of the inner head. On the outer wall of the zinc alloy screw rod, a second sealing groove is provided. A second sealing ring is sleeved in the second sealing groove, and the second sealing ring is pressed between the zinc alloy screw rod and the inner wall of the inner head;

[0008] On a section of the zinc alloy gas outlet valve exposed outside the inner head, a toothed disc is provided. A gas adjusting lever is meshed and connected to the toothed disc, and the outer end of the gas adjusting lever extends outside the lighter cover.

[0009] The beneficial effects of the present utility model: practical, novel in structure, reducing the production cost of such lighters, stabilizing the flame, solving the problems of existing shrinking fire, slow flameout, and insensitive size adjustment, and the flame will not become smaller and smaller during continuous ignition, improving the quality and grade of lighter products. Description of the Drawings

[0010] Figure 1 It is a schematic diagram of the external structure of the lighter of the present utility model.

[0011] Figure 2 It is a schematic sectional structure diagram of the installation of the inner head of the present utility model.

[0012] Figure 3 It is a schematic exploded structure diagram of the installation of the inner head of the present utility model.

[0013] Figure 4 It is a schematic exploded structure diagram of the lower view of the installation of the inner head of the present utility model. Detailed Implementation Modes

[0014] An improved structure of a plastic direct-jet lighter includes an inner head 1, a zinc alloy gas outlet valve 2, a zinc alloy screw rod 3, a plastic tube 4 and a gas tank housing 5. An ignition device 9 and a lighter cover 8 are installed on the gas tank housing 5. The inner head 1 adopts a smooth and threadless design inside. The inner head 1 is sleeved in the gas tank housing 5. The lower part of the zinc alloy gas outlet valve 2 is sleeved from the upper part of the inner head 1 into the inner head 1. After the threaded section 301 at the upper part of the zinc alloy screw rod 3 extends into the inner head 1 from the lower part of the inner head 1, the threaded section 301 is threadedly connected to the threaded hole 201 at the lower part of the zinc alloy gas outlet valve 2. A filter screen 6 and an air-adjusting sponge 7 are provided in the gap between the top end of the threaded section 301 and the top of the threaded hole 201. The plastic tube 4 is inserted and connected to the air pipe connecting part 302 at the lower part of the zinc alloy screw rod 3. A clamping groove 101 is provided on the hole wall at the lower part of the inner head 1. A clamping block 303 for being clamped into the clamping groove 101 is arranged outside the zinc alloy screw rod 3. An air passage for connecting the plastic tube 4 and the zinc alloy gas outlet valve 2 up and down is provided in the zinc alloy screw rod 3. The lower part of the plastic tube 4 extends into the gas tank housing 5.

[0015] like Figures 1-4 As shown, the utility model changes the conventional structure of threaded connection between the inner machine head 1 and the zinc alloy outlet valve 2. The lower part of the zinc alloy outlet valve 2 is sleeved into the inner machine head 1 from the upper part of the inner machine head 1. After the threaded section 301 on the upper part of the zinc alloy screw 3 extends into the inner machine head 1 from the lower part of the inner machine head 1, the threaded section 301 is connected to the threaded hole 201 at the lower part of the zinc alloy outlet valve 2, thereby realizing a fixed connection between the three components.

[0016] Structural principle: a card groove 101 is opened on the hole wall at the lower end of the inner head 1, and the card groove 101 cooperates with the block 303 on the zinc alloy screw 3 for orientation. After the two are welded, the zinc alloy screw 3 is fixedly installed and connected to the air box shell 5. The zinc alloy screw 3 is provided with a second sealing groove 309, and a second sealing ring 11 is provided inside the zinc alloy screw 3 to form a sealed channel from below the liquid level in the air box shell 5 to the central hole of the zinc alloy outlet valve 2, thereby stabilizing the airflow and air pressure.

[0017] In addition, the small sponge volume of the air-regulating sponge 7 is small. In the air-sealing state, the air-regulating sponge 7 shrinks and stores a small amount of gas. When ventilation is instantly opened, the cooling of the T-shaped rubber plug 100 in the zinc alloy outlet valve 2 is also reduced. The airflow passes through the threaded gaps and the mesh to increase the vaporization rate of the liquid gas, and the cooling effect of the T-shaped rubber plug 100 is also reduced. Therefore, the instantaneous air-sealing effect is improved, thereby improving the flameout time.

[0018] This zinc alloy outlet valve 2 is provided with an internal thread and an outlet valve screw rod, and the outlet valve screw rod is fixed between the inner machine head 1 and the air box shell 5. The zinc alloy outlet valve 2 cancels the external thread structure. The metal machine outlet valve produced by the manufacturer in Wenzhou area is fixed by the connection between the external thread and the air box shell 5, and the disposable outlet valve produced by the manufacturer in Ningbo area is connected by the plastic thread sleeve thread. When the zinc alloy outlet valve 2 of this scheme is installed, a threaded connection installation process is omitted, and the assembly process is reduced. This structure can also be similar to the flap assembly process in the production process of disposable lighters, and most of the parts can be assembled on the flap at the same time. The outlet cap gear ring (toothed disc 208) on this zinc alloy outlet valve 2 is the same as the structure on the current disposable lighter, so the disposable outlet valve equipment can also be applicable and universal. It can also play a role in automated production efficiency.

[0019] The existing air outlet valve of the metal lighter produced by manufacturers in Wenzhou area has an external thread structure, which is manually screwed one by one, with low efficiency and high labor cost. The inner head 1 in this solution does not have a thread structure inside, and the manufacturing production cost is more economical than that with threads and lower. Different from the existing metal air outlet valve, the external thread is cancelled and the shape of the gear cap is added. Finally, a plastic tension pipe replaces the copper pipe of the metal air outlet valve (some directly make an integrated plastic pipe channel on the air tank housing 5 that extends below the liquid level). The air tank housing 5 does not use a tension pipe, the internal structure of the air tank is simple, the injection molding production efficiency is improved, the limited internal space of the air tank is less occupied, and at the same time the gas capacity is increased, killing two birds with one stone.

[0020] After the described inner head 1 and the zinc alloy screw 3 are welded and connected, the zinc alloy screw 3 is fixedly connected to the air tank housing 5.

[0021] Two first sealing grooves 209 are formed on the outer wall of the described zinc alloy air outlet valve 2, and a first sealing ring 10 is sleeved in the first sealing groove 209. The first sealing ring 10 is pressed between the zinc alloy air outlet valve 2 and the inner wall of the inner head 1. A second sealing groove 309 is formed on the outer wall of the zinc alloy screw 3, and a second sealing ring 11 is sleeved in the second sealing groove 309. The second sealing ring 11 is pressed between the zinc alloy screw 3 and the inner wall of the inner head 1.

[0022] A tooth disc 208 is provided on a section of the described zinc alloy air outlet valve 2 exposed outside the inner head 1. A gas regulating lever 12 is meshed with the tooth disc 208, and the outer end of the gas regulating lever 12 extends outside the lighter cover 8.

Claims

1. An improved structure of a plastic direct-injection lighter, comprising an inner head (1), a zinc alloy air outlet valve (2), a zinc alloy screw (3), a plastic tube (4) and an air box shell (5), an ignition device (9) and a lighter cover (8) are mounted on the air box shell (5), characterized in that: The inner machine head (1) adopts a smooth internal non-threaded design. The inner machine head (1) is sleeved in the air box shell (5). The lower part of the zinc alloy outlet valve (2) is sleeved into the inner machine head (1) from the upper part of the inner machine head (1). After the threaded section (301) at the upper part of the zinc alloy screw (3) extends from the lower part of the inner machine head (1) into the inner machine head (1), the threaded section (301) is connected to the threaded hole (201) at the lower part of the zinc alloy outlet valve (2). The top end of the threaded section (301) is aligned with the top of the threaded hole (201). A filter screen (6) and an air regulating sponge (7) are provided in the gap between the two. The plastic tube (4) is plugged and connected to the air pipe connecting portion (302) at the lower part of the zinc alloy screw rod (3). A slot (101) is provided on the hole wall at the lower part of the inner machine head (1). A block (303) for being inserted into the slot (101) is provided on the outside of the zinc alloy screw rod (3). An air passage for connecting the plastic tube (4) and the zinc alloy air outlet valve (2) is provided in the zinc alloy screw rod (3). The lower part of the plastic tube (4) extends into the air box housing (5).

2. The improved structure of a plastic direct-injection lighter according to claim 1, characterized in that: After the inner machine head (1) and the zinc alloy screw (3) are connected by welding, the zinc alloy screw (3) is fixedly connected to the air box shell (5).

3. An improved structure of a plastic direct-injection lighter according to claim 1 or 2, characterized in that: The zinc alloy outlet valve (2) has two first sealing grooves (209) formed on its outer wall, a first sealing ring (10) being sleeved in the first sealing groove (209), the first sealing ring (10) being squeezed between the zinc alloy outlet valve (2) and the inner wall of the inner machine head (1), a second sealing groove (309) being formed on its outer wall, a second sealing ring (11) being sleeved in the second sealing groove (309), the second sealing ring (11) being squeezed between the zinc alloy screw (3) and the inner wall of the inner machine head (1).

4. The improved structure of a plastic direct-injection lighter according to claim 3, characterized in that: A section of the zinc alloy air outlet valve (2) exposed outside the inner head (1) is provided with a toothed disc (208), and a gas regulating lever (12) is meshingly connected to the toothed disc (208), and the outer end of the gas regulating lever (12) extends to the outside of the lighter cover (8).

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