Air inlet valve mounting structure of lighter

Abstract

The utility model relates to a mounting structure of a gas inlet valve of a lighter, which comprises a valve seat, a gas inlet valve and a gas outlet valve. An annular limiting edge extending outwards in the radial direction is arranged at the lower end of the adjusting rod; wherein the adjusting rod is assembled in an inner cavity of the valve seat from an opening in the upper end of the valve seat through the lower end of the adjusting rod, when the adjusting rod is assembled in place, the edge of the opening in the upper end of the valve seat is folded inwards in the radial direction to form a limiting flange, and the limiting flange is located over the limiting edge in the axial direction and is in axial limiting fit with the limiting edge. The scheme is not limited by materials of the valve seat and the adjusting rod, and the assembly structure is reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to engine timing system technical field especially relates to a lighter air inlet valve mounting structure. BACKGROUND

[0002] The air inlet valve of the lighter comprises two independent components of valve seat and adjusting rod, and the adjusting rod needs to be press-fitted into the valve seat during assembly. The valve seat and the adjusting rod in the prior art are both made of brass, and their assembly structure is shown in Figs. Figure 1 and Figure 2 The lower end of the adjusting rod is directly press-fitted into the valve seat without the need of setting an additional connecting structure. Since the valve seat and the adjusting rod are made of the same material, they can be successfully press-fitted. However, the material cost of brass is high, and therefore the applicant proposed in the prior application to use a zinc alloy to process the air inlet valve. However, for the air inlet valve with the valve seat and the adjusting rod being independent of each other, the adjusting rod is a simple straight rod structure, and therefore the zinc alloy is not necessarily used for the adjusting rod. In the case that the valve seat and the adjusting rod are made of different materials, the structure shown in Figs. Figure 1 and Figure 2 After the two are press-fitted, the adjusting rod is likely to pop out of the valve seat in practice, which affects the product qualification rate. SUMMARY

[0003] To solve the above problems, the utility model aims at providing a lighter air inlet valve mounting structure which is not limited by the materials of the valve seat and the adjusting rod and has a reliable assembly structure.

[0004] A lighter air inlet valve mounting structure comprises:

[0005] A valve seat, the upper end of the valve seat is provided with an opening;

[0006] An adjusting rod, the lower end of the adjusting rod is provided with an annular limiting flange extending radially outward;

[0007] The adjusting rod is assembled into the inner cavity of the valve seat through the lower end thereof, and when assembled in place, the upper end opening edge of the valve seat is folded inward radially to form a limiting flange, which is located axially above the limiting flange and forms an axial limiting fit with the limiting flange.

[0008] The above structure realizes simple assembly through the axial fit of the flange and the limiting flange, ensures the axial positioning reliability of the adjusting rod in the valve seat, effectively prevents the adjusting rod from accidentally coming out, and has a reliable assembly structure which is not affected by the materials of the valve seat and the adjusting rod.

[0009] Preferably, the limiting flange is an annular flange arranged circumferentially around the upper end opening of the valve seat, and / or the limiting flange is an annular limiting flange.

[0010] The annular limit flange provides 360-degree continuous limit support, so that the adjusting rod is uniformly stressed and deformation of the limit flange caused by local stress concentration is avoided; the open-die manufacturing structure of the annular limit flange is simpler and can also provide 360-degree continuous limit support.

[0011] Preferably, the limit flange 11 is formed by stamping an inwardly folded or curled structure from the upper end opening edge of the valve seat 1.

[0012] The stamping forming process can realize efficient batch production, and the curled structure effectively enhances the structural strength of the limit flange edge.

[0013] Preferably, the thickness of the upper end opening edge of the valve seat is smaller than the thickness of the rest of the outer wall of the inner cavity of the valve seat. On the one hand, it can expand the opening, and on the other hand, it is convenient for the limit flange to be processed after being pressed into place.

[0014] Preferably, the inner cavity of the valve seat 1 is provided with an axial limit step, and the lower surface of the limit flange 21 and the upper surface of the axial limit step form an axial support cooperation.

[0015] The axial limit step positions the installation position of the adjusting rod, and forms an up-down bidirectional limit structure with the limit flange to the adjusting rod, which can improve the axial positioning accuracy of the adjusting rod.

[0016] Preferably, the radial extension width of the limit flange 21 is greater than the inner diameter of the limit flange 11 and smaller than the diameter of the inner cavity of the valve seat 1.

[0017] It can ensure that the limit flange can be effectively blocked by the limit flange, while maintaining the smoothness of the assembly of the adjusting rod in the inner cavity of the valve seat.

[0018] Preferably, the limit flange 11 includes a plurality of local limit flanges arranged at intervals along the circumference of the valve seat 1.

[0019] The design of the limit flange reduces material consumption, and reduces the processing difficulty while ensuring the limit function.

[0020] Preferably, the valve seat 1 is made of zinc alloy material, and the adjusting rod 2 is made of iron material.

[0021] The zinc alloy material can ensure the processability of the stamping forming of the valve seat, the iron adjusting rod can improve the wear resistance, and the material cost of iron is lower, which can further reduce the production cost of the intake valve on the premise of ensuring the basic performance.

[0022] In summary, the utility model adopts the above scheme, through the axial cooperation of the limit flange and the limit flange, the axial positioning reliability of the adjusting rod in the valve seat is ensured, and the accidental falling out of the adjusting rod is effectively prevented. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the prior art.

[0024] Figure 2 is a sectional view of the structure of the present application (not punched limiting flange); Figure 1

[0025] Figure 3 is a sectional view of the structure of the present application (not punched limiting flange);

[0026] Figure 4 is a sectional view of the structure of the present application (not punched limiting flange); Figure 3

[0027] Figure 5 is a sectional view of the structure of the present application (not punched limiting flange); Figure 3

[0028] Reference signs: valve seat 1, adjusting rod 2, limiting flange 11, limiting edge 21. DETAILED DESCRIPTION

[0029] The embodiments of the present application will be described in detail below.

[0030] The embodiment discloses a mounting structure of a lighter air inlet valve, comprising: a valve seat 1, the upper end of the valve seat 1 is provided with an opening; an adjusting rod 2, the lower end of the adjusting rod 2 is provided with an annular limiting edge 21 extending radially outward; wherein the adjusting rod 2 is assembled into the inner cavity of the valve seat through the lower end thereof, as shown in Figure 3 and Figure 4 When assembled in place, the upper end opening edge of the valve seat is folded inward along the radial direction to form a limiting flange 11, the limiting flange 11 is located axially directly above the limiting edge 21 and forms an axial limiting fit with the limiting edge 21, as shown in Figure 5 The radial extension width of the limiting edge 21 is greater than the inner diameter of the limiting flange 11 and less than the inner cavity diameter of the valve seat 1, so that the limiting flange and the limiting edge formed can prevent the adjusting rod from being pulled out of the valve seat.

[0031] As shown in Figure 4 , the thickness of the upper end opening edge of the valve seat 1 is less than the thickness of the rest of the inner cavity outer wall of the valve seat, on the one hand, the opening can be enlarged without affecting the overall strength of the valve seat during assembly, facilitating the adjusting rod 2 to be assembled into the inner cavity of the valve seat together with the limiting edge on the lower end thereof, on the other hand, after the adjusting rod 2 is assembled in place, the thinner opening edge is more easily deformed inwardly, facilitating the processing of the limiting flange. In this embodiment, the limiting flange 11 is formed by the upper end opening edge of the valve seat 1 through a stamping process to form a folded edge or a curled edge structure inwardly, which is convenient to process and can be processed in batches.

[0032] As shown in Figure 4 and Figure 5 ​​​As shown, the inner cavity of the valve seat 1 is provided with an axial limiting step, and the lower surface of the limiting flange 21 is in axial support cooperation with the upper surface of the axial limiting step.

[0033] Further, the limiting flange is a ring-shaped flange arranged circumferentially around the upper end opening of the valve seat, and / or the limiting flange is a ring-shaped limiting flange.

[0034] In this embodiment, the valve seat 1 is made of zinc alloy material, and the adjusting rod 2 is made of iron material. The zinc alloy material can ensure the processability of the stamping forming of the valve seat, the iron adjusting rod can improve the wear resistance, and the material cost of iron is lower, which can further reduce the production cost of the intake valve under the premise of ensuring the basic performance.

[0035] 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. An air inlet valve mounting structure for a lighter, characterized by comprising: The utility model relates to a valve seat (1) upper end is provided with the opening, the adjusting rod (2) lower end is provided with the limit along (21) extending radially outward, wherein the adjusting rod (2) is through its lower end from the valve seat (1) upper end opening assembly in the valve seat (1) inner chamber, when assembly in place, the valve seat (1) upper end opening edge is radially inwardly folded and forms the limit turnup (11), the limit turnup (11) is located in the axial positive above of limit along (21) and forms the axial limit cooperation with limit along (21). The limit turnup (11) is annular turnup that is circumferentially arranged around the upper opening of the valve seat (1), and / or the limit along is annular limit along. The limit turnup (11) is the inwardly folded structure formed by the upper opening edge of the valve seat (1) through a stamping process. The thickness of the upper opening edge of the valve seat (1) is less than the thickness of the outer wall of the inner chamber of the valve seat at other positions.

2. The lighter air inlet valve mounting structure according to claim 1, characterized by The inner chamber of the valve seat (1) is provided with an axial limit step, and the lower surface of the limit along (21) and the upper surface of the limit step form an axial support cooperation.

3. The lighter air inlet valve mounting structure according to claim 1, characterized by The radial extension width of the limit along (21) is greater than the inner diameter of the limit turnup (11) and less than the diameter of the inner chamber of the valve seat (1).

4. The lighter air intake valve mounting structure according to any one of claims 1 to 3, characterized by The limit turnup (11) includes a plurality of local turnups arranged circumferentially at intervals.

5. The lighter air inlet valve mounting structure according to claim 1, characterized by The valve seat (1) is made of zinc alloy material, and the adjusting rod (2) is made of iron material.

6. The lighter air inlet valve mounting structure according to claim 1, characterized by ​ 7. The lighter air inlet valve mounting structure according to claim 1, characterized by ​ 8. The lighter air inlet valve mounting structure according to claim 1, wherein ​

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