Lighter and installation structure of gas valve of lighter

Abstract

The utility model relates to a lighter and its gas valve installation structure, including gas box and gas outlet valve installed on the gas box, the gas outlet valve includes gas outlet valve body, the gas outlet end of gas box is equipped with the installation hole that is communicated with the inside of gas box, the gas outlet valve body and the installation hole are inserted and matched; a plurality of first annular limiting grooves are formed in the outer side wall of the air outlet valve body, the first annular limiting grooves are sleeved with first sealing rings, and after the air outlet valve body is installed in place, the first sealing rings are pressed between the first annular limiting grooves and the inner side wall of the air box. According to the scheme, a thread structure does not need to be machined on the gas tank, the requirements for gas tank material strength and hardness are low, and the universality of the gas valve mounting structure is high. And the air outlet valve and the air tank are connected without an additional connecting structure, so that the production cost is reduced, the mounting process is simplified, and the assembly efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lighter technical field especially relates to a lighter and gas valve structure thereof. BACKGROUND

[0002] The gas valve structure of the lighter mainly includes the air outlet valve, the air inlet valve and the adjusting rod of the lighter, wherein the air outlet valve is installed at the air outlet end of the gas tank, the air inlet valve is installed at the air inlet end of the gas tank, and the adjusting rod cooperates with the air outlet valve to adjust the air outlet amount of the air outlet valve. In the prior art, the air outlet valve and the gas tank are usually connected through a threaded structure. For the gas tank made of POM (polyoxymethylene), the rigidity and strength of the material are high, and the threaded structure can be directly machined on the gas tank and connected with the external threaded structure on the valve body of the air outlet valve. However, for the gas tank made of AS material (styrene-acrylonitrile copolymer), the rigidity and strength of the material are low, and the material is brittle. If the threaded structure is directly machined on the gas tank, the shell is prone to cracking, the machining difficulty is high, and the damage rate is high. Therefore, for the AS gas tank, in order to connect with the air outlet valve, a cup-shaped plastic member commonly known as an "inner joint" is usually additionally provided, the inner joint is connected with the gas tank, and the valve body of the air outlet valve is threadedly connected with the inner joint. The above structure has the following disadvantages:

[0003] (1) The price of AS material is significantly lower than that of POM. Disposable lighters usually adopt AS material to reduce production cost, but an inner joint is additionally provided for the installation of the air outlet valve, which increases the production cost. The inner joint needs to be installed on the gas tank by welding or other methods, and then the valve body of the air outlet valve is connected with the inner joint, which increases the installation process;

[0004] (2) During assembly, the threaded connection structure is not conducive to batch installation compared with the press-fit structure, and the threaded structure requires high machining precision. SUMMARY

[0005] In order to solve the above problems, the purpose of the utility model is to provide a lighter and a gas valve structure thereof, which improves the connection structure between the air outlet valve and the gas tank, has low requirements for the material of the gas tank, is conducive to reducing production cost, and simplifies the installation process.

[0006] One embodiment of the present application discloses an installation structure of a lighter gas valve, which comprises a gas tank and an air outlet valve installed on the gas tank. The air outlet valve comprises an air outlet valve body, the air outlet end of the gas tank is provided with a mounting hole communicating with the inside of the gas tank, and the air outlet valve body is inserted and matched with the mounting hole. The outer side wall of the air outlet valve body forms a plurality of first annular limiting grooves, a first sealing ring is sleeved on the first annular limiting groove, and the first sealing ring is compressed between the first annular limiting groove and the inner side wall of the gas tank after the air outlet valve body is installed in place.

[0007] Preferably, the radial dimension of the outermost end of the first annular limiting groove is equivalent to the hole diameter of the mounting hole in the air tank.

[0008] Preferably, an adjusting rod is provided, the upper end of the adjusting rod is connected with the air outlet valve body, the outer side wall of the adjusting rod forms a plurality of second annular limiting grooves, and a second sealing ring is sleeved on the second annular limiting grooves.

[0009] Preferably, the air outlet valve body is provided with an internal thread, the upper end of the adjusting rod is provided with an external thread, and the upper end of the adjusting rod is threadedly connected with the air outlet valve body.

[0010] In one embodiment, the up-regulating air structure is adopted, the upper part of the air outlet valve body is connected with the fire adjusting ring, the fire adjusting ring drives the air outlet valve body to rotate and lift relative to the adjusting rod, and a circumferential limiting structure is arranged between the adjusting rod and the air tank to limit the relative rotation of the adjusting rod and the air tank in the circumferential direction.

[0011] Preferably, a plurality of protruding ribs are arranged on the outer side wall of the upper part of the air outlet valve body in the circumferential direction, a tooth-shaped structure matched with the protruding ribs is arranged on the inner side wall of the fire adjusting ring, and the air outlet valve body and the fire adjusting ring are connected through meshing of the protruding ribs and the tooth-shaped structure.

[0012] Preferably, the circumferential limiting structure comprises a first tangent surface vertically arranged on the outer side wall of the adjusting rod and a second tangent surface arranged on the inner side wall of the air tank and corresponding to the first tangent surface.

[0013] Preferably, a falling prevention structure is arranged between the outer side wall of the adjusting rod and the air tank.

[0014] Preferably, the falling prevention structure comprises a first limiting step arranged on the outer side wall of the adjusting rod and a first limiting groove arranged on the inner side wall of the air tank and corresponding to the first limiting step, and after the adjusting rod is press-fitted in place, the first limiting step is clamped into the first limiting groove at least at the widest part in the radial direction.

[0015] In another embodiment, the down-regulating air structure is adopted, the lower part of the adjusting rod is connected with the fire adjusting ring, the fire adjusting ring drives the adjusting rod to rotate and lift relative to the air outlet valve body, and a circumferential limiting structure is arranged between the air outlet valve body and the air tank to limit the relative rotation of the air outlet valve body and the air tank in the circumferential direction.

[0016] Preferably, the circumferential limiting structure comprises a third tangent surface vertically arranged on the outer side wall of the air outlet valve body and a fourth tangent surface arranged on the inner side wall of the air tank and corresponding to the third tangent surface.

[0017] Preferably, a falling prevention structure is arranged between the outer side wall of the air outlet valve body and the air tank.

[0018] Preferably, the anti-falling structure comprises a second limiting step arranged on the outer sidewall of the air outlet valve body and a second limiting groove arranged on the inner sidewall of the air tank corresponding to the second limiting step, and the second limiting step is clamped into the second limiting groove at least at the widest part in the radial direction after the air outlet valve body is press-fitted in place.

[0019] Another embodiment of the present application also discloses a lighter comprising the mounting structure of the air valve of the lighter according to any one of the above.

[0020] According to the above scheme, the air outlet valve and the air tank are directly press-fitted to achieve air valve mounting, without the need to process a threaded structure on the air tank, which has low requirements on the material strength and hardness of the air tank and high versatility of the air valve mounting structure. The connection between the air outlet valve and the air tank does not require the aid of an additional connecting structure, which is conducive to reducing production costs, simplifying the installation process and improving assembly efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 FIG. 1 is a structural schematic view of the air outlet valve body and the adjusting rod of the embodiment 1 of the present application (air adjustment up);

[0022] Figure 2 FIG. 2 is a structural schematic view of the air outlet valve body and the adjusting rod of the embodiment 2 of the present application (air adjustment down).

[0023] REFERENCE SIGNS:

[0024] Air outlet valve 1, air outlet valve body 11, first annular limiting groove 111, second limiting step 112, third cutting surface 113, convex rib 114, adjusting rod 2, second annular limiting groove 21, first limiting step 22, first cutting surface 23. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described in detail below.

[0026] Embodiment 1:

[0027] The embodiment provides a mounting structure of an air valve of a lighter, which comprises an air tank and an air outlet valve 1 mounted on the air tank, as shown in Figure 1 The air outlet valve comprises an air outlet valve body 11, and the air outlet end of the air tank is provided with a mounting hole communicating with the inside of the air tank, and the air outlet valve body 11 is inserted and matched with the mounting hole; the outer sidewall of the air outlet valve body 11 forms a plurality of first annular limiting grooves 111, a first sealing ring is sleeved on the first annular limiting groove 111, and the first sealing ring is compressed between the first annular limiting groove 111 and the inner sidewall of the air tank after the air outlet valve body 11 is mounted in place.

[0028] In the structure, the outlet valve body 11 is directly inserted and fitted with the gas tank, which can be assembled in batches to improve the assembly efficiency. Moreover, the two parts are connected without thread connection, and the gas tank shell does not need to be processed with thread structure, especially for the gas tank made of AS material, which does not need to be additionally provided with an inner joint, but only needs to be provided with a mounting hole, so that the above mounting structure has low requirements on the material of the gas tank and is conducive to cost saving.

[0029] Moreover, the inner wall of the gas tank and the outlet valve body 11 are sealed by the first sealing ring, which can ensure the sealing of the inside of the gas tank, and the cooperation between the first sealing ring and the inner wall of the gas tank can also realize the connection between the outlet valve body 11 and the gas tank. In an embodiment, the outlet valve body 11 can be axially limited by the change in the radial dimension of the mounting hole on the gas tank to be kept in the mounting hole.

[0030] Preferably, the radial dimension of the outermost end of the first annular limiting groove 111 is equivalent to the hole diameter of the mounting hole in the gas tank, which reduces the gap between the two under the premise that the outlet valve body 11 can be smoothly assembled into the mounting hole, and ensures the air tightness of the gas tank.

[0031] As shown in Figure 1 The mounting structure of the lighter gas valve further includes an adjusting rod 2 for adjusting the gas outlet size of the outlet valve to adjust the flame, and the upper end of the adjusting rod 2 is connected with the outlet valve body 11. The outer side wall of the adjusting rod 2 forms a plurality of second annular limiting grooves 21, and a second sealing ring is sleeved on the second annular limiting grooves 21. After the adjusting rod 2 is installed in place, the second sealing ring is compressed between the second annular limiting grooves 21 and the inner side wall of the gas tank. The structure of the adjusting rod 2 cooperating with the outlet valve to realize the flame adjustment is a conventional technology in the field, which will not be described here. In this embodiment, the outlet valve body 11 is provided with an internal thread, and the upper end of the adjusting rod 2 is provided with an external thread, and the upper end of the adjusting rod 2 is threadedly connected with the outlet valve body 11. The adjustment of the gas outlet size is realized by the lifting between the outlet valve body 11 and the adjusting rod 2. Since the adjusting rod 2 and the outlet valve body 11 are connected by thread, the relative rotation between the two can realize the lifting adjustment of the adjusting rod 2 relative to the outlet valve.

[0032] According to the different setting positions of the fire adjusting ring, the structure is divided into up-adjusting gas and down-adjusting gas structures. This embodiment is an up-adjusting gas structure, the upper part of the outlet valve body 11 is connected with the fire adjusting ring, and the fire adjusting ring drives the outlet valve body 11 to rotate and lift relative to the adjusting rod 2; and a circumferential limiting structure is arranged between the adjusting rod 2 and the gas tank to limit the relative rotation of the two in the circumferential direction. In an embodiment, the circumferential limiting structure is specifically as shown in Figure 1 The circumferential limiting structure includes a first cutting surface 23 vertically arranged on the outer side wall of the adjusting rod 2, and a second cutting surface arranged on the inner side wall of the gas tank and corresponding to the first cutting surface 23, which prevents the circumferential rotation of the adjusting rod 2 by the cooperation of the two abutting planes.

[0033] The outer side wall of the upper part of the exhaust valve body 11 is provided with a plurality of raised ribs 114 spaced along the circumferential direction, and the inner side wall of the flame adjusting ring is provided with a toothed structure that cooperates with the raised ribs 114. The exhaust valve body 11 and the flame adjusting ring are connected by the engagement of the raised ribs 114 and the toothed structure.

[0034] Preferably, an anti-detachment structure is provided between the outer wall of the adjusting rod 2 and the air box. Specifically, in this embodiment, the anti-detachment structure includes a first limiting step 22 provided on the outer wall of the adjusting rod 2 and a first limiting groove provided on the inner wall of the air box corresponding to the first limiting step 22. After the adjusting rod 2 is pressed into place, the first limiting step 22 is engaged in the first limiting groove at least at its widest radial point, thereby forming an anti-detachment structure through the cooperation of the limiting step and the limiting groove. In this embodiment, as shown... Figure 1 As shown, the first limiting step 22 is located at the foremost side in the insertion direction of the adjusting rod 2. The adjusting rod 2 is inserted into the air box from bottom to top. The radial dimension of the lower end of the first limiting step 22 is larger than the radial dimension of the upper end of the first limiting step 22 to facilitate the insertion of the adjusting rod 2. The radial dimension of the lower end of the first limiting step 22 is slightly larger than the diameter of the insertion hole of the adjusting rod 2 at the bottom of the air box. When pressed in, the lower end of the first limiting step 22 can be pressed into place and locked into the first limiting groove in a manner similar to an interference fit, thereby preventing the adjusting rod 2 from falling off after installation. The installation structure is reliable.

[0035] Example 2:

[0036] The difference between this embodiment and Embodiment 1 is that this embodiment uses a downward-adjusting gas structure, such as... Figure 2 As shown, the lower part of the adjusting rod 2 is connected to the flame adjusting ring, which drives the adjusting rod 2 to rotate relative to the outlet valve body 11. A circumferential limiting structure is provided between the outlet valve body 11 and the gas box to restrict their relative rotation in the circumferential direction. The circumferential limiting structure includes a third cut surface 113 vertically arranged on the outer wall of the outlet valve body 11 and a fourth cut surface corresponding to the third cut surface 113 on the inner wall of the gas box. An anti-detachment structure is provided between the outer wall of the outlet valve body 11 and the gas box. In this embodiment, the anti-detachment structure includes a second limiting step 112 provided on the outer wall of the outlet valve body 11 and a second limiting groove provided on the inner wall of the gas box corresponding to the second limiting step 112. After the outlet valve body 11 is pressed into place, the second limiting step 112 is engaged in the second limiting groove at least at its widest radial point. In this embodiment, as shown... Figure 1As shown, the second limiting step 112 is located at the most front side in the loading direction of the exhaust valve body 11, the exhaust valve body 11 is loaded from top to bottom into the air tank, the upper end size of the second limiting step 112 is greater than the radial size of the lower end of the second limiting step 112 so as to facilitate the insertion of the exhaust valve body 11, and the radial size of the upper end of the second limiting step 112 is slightly greater than the hole diameter of the upper mounting hole of the air tank, when being pressed in, the upper end of the second limiting step 112 can be pressed into place in a manner similar to interference fit and clamped into the second limiting groove, thereby preventing the valve body from falling off after being installed in place, and the installation structure is reliable.

[0037] Embodiment 3

[0038] The embodiment provides a lighter adopting the installation structure of the lighter valve of the lighter of embodiment 1 or embodiment 3.

[0039] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A mounting structure for a lighter gas valve, comprising a gas tank and a gas outlet valve mounted on the gas tank, wherein the gas outlet valve includes a gas outlet valve body, characterized in that, The air outlet end of the air box is provided with an installation hole that connects to the inside of the air box, and the air outlet valve body is inserted into the installation hole; the outer side wall of the air outlet valve body forms a plurality of first annular limiting grooves, and a first sealing ring is fitted on the first annular limiting groove. After the air outlet valve body is installed in place, the first sealing ring is pressed between the first annular limiting groove and the inner side wall of the air box.

2. The installation structure of a lighter gas valve according to claim 1, characterized in that, The radial dimension of the outermost end of the first annular limiting groove is equivalent to the diameter of the mounting hole inside the air box.

3. The mounting structure for a lighter gas valve according to claim 1 or 2, characterized in that, It includes an adjusting rod, the upper end of which is connected to the valve body of the air outlet valve; the outer wall of the adjusting rod forms several second annular limiting grooves, and a second sealing ring is fitted on the second annular limiting groove. After the adjusting rod is installed in place, the second sealing ring is pressed between the second annular limiting groove and the inner wall of the air box.

4. The installation structure of a lighter gas valve according to claim 3, characterized in that, The valve body of the vent valve has an internal thread, and the upper end of the adjusting rod has an external thread. The upper end of the adjusting rod is threadedly connected to the valve body of the vent valve.

5. The installation structure of a lighter gas valve according to claim 3, characterized in that, The upper part of the exhaust valve body is connected to the ignition ring, which drives the exhaust valve body to rotate relative to the adjusting rod; a circumferential limiting structure is provided between the adjusting rod and the gas box to restrict their relative rotation in the circumferential direction.

6. The mounting structure for a lighter gas valve according to claim 5, characterized in that, The outer side wall of the upper part of the exhaust valve body is provided with multiple raised ribs at intervals along the circumference, and the inner side wall of the flame adjusting ring is provided with a toothed structure that cooperates with the raised ribs. The exhaust valve body and the flame adjusting ring are connected by the engagement of the raised ribs and the toothed structure.

7. The mounting structure for a lighter gas valve according to claim 5, characterized in that, The circumferential limiting structure includes a first cut surface vertically arranged on the outer wall of the adjusting rod, and a second cut surface corresponding to the first cut surface arranged on the inner wall of the air box.

8. The installation structure of a lighter gas valve according to claim 5, characterized in that, An anti-detachment structure is provided between the outer wall of the adjusting rod and the air box.

9. The installation structure of a lighter gas valve according to claim 8, characterized in that, The anti-detachment structure includes a first limiting step set on the outer wall of the adjusting rod and a first limiting groove set on the inner wall of the air box corresponding to the first limiting step. After the adjusting rod is pressed into place, the first limiting step is inserted into the first limiting groove at least at its widest radial point.

10. The installation structure of a lighter gas valve according to claim 4, characterized in that, The lower part of the adjusting rod is connected to the flame adjusting ring, which drives the adjusting rod to rotate relative to the valve body of the gas outlet valve; a circumferential limiting structure is provided between the valve body of the gas outlet valve and the gas box to restrict their relative rotation in the circumferential direction.

11. The mounting structure for a lighter gas valve according to claim 10, characterized in that, The circumferential limiting structure includes a third vertically arranged surface on the outer wall of the outlet valve body and a fourth surface corresponding to the third surface on the inner wall of the air box.

12. The installation structure of a lighter gas valve according to claim 10, characterized in that, An anti-detachment structure is provided between the outer wall of the valve body and the air box.

13. The mounting structure for a lighter gas valve according to claim 12, characterized in that, The anti-detachment structure includes a second limiting step set on the outer side wall of the air outlet valve body and a second limiting groove set on the inner side wall of the air box corresponding to the second limiting step. After the air outlet valve body is pressed into place, the second limiting step is inserted into the second limiting groove at least at its widest radial point.

14. A lighter, characterized in that, The invention includes a mounting structure for a lighter gas valve as described in any one of claims 1-13.

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