Adjustable air intake structure for paint spray gun air inlet connector

Abstract

An adjustable air intake structure for a paint spray gun includes an air intake connector, an air intake connector seat, and an adjusting sleeve. The main feature is an air intake connector seat with one end sealed and several air outlets arranged around its periphery near the sealed end, screwed onto the air intake end of the paint spray gun. An air intake connector is screwed onto the other end of the air intake connector seat, and an adjusting sleeve is screwed onto it. The adjusting sleeve rotates around the axis of the air intake connector seat, and the air intake volume is adjusted by the size of the air outlets of the air intake connector seat being covered or exposed by the adjusting sleeve, providing users with more convenient and intuitive operation. This structure simplifies the appearance of the paint spray gun, reducing its size and weight, and the simplified external components make post-use cleaning and maintenance easier.

Description

Adjustable air intake structure for paint spray gun air inlet connector Technical Field

[0001] An adjustable air intake structure for a paint spray gun includes an air intake connector, an air intake connector seat, and an adjusting sleeve. The main feature is an air intake connector seat with one end sealed and several air outlets arranged around its periphery near the sealed end, screwed onto the air intake end of the paint spray gun. An air intake connector is screwed onto the other end of the air intake connector seat, and an adjusting sleeve is screwed onto it. The adjusting sleeve rotates around the axis of the air intake connector seat, adjusting the size of the air outlets by covering or exposing them, thus adjusting the air intake volume and providing users with more convenient and intuitive operation. This structure simplifies the appearance of the paint spray gun, reducing its size and weight, and the simplified external components make post-use cleaning and maintenance easier. Prior Technology

[0002] Conventional paint spray guns have separate air intake connectors and air intake adjustment mechanisms, as shown in the first figure. The air intake connector 1a is an independent interface, and the air intake volume needs to be adjusted using the side adjustment switch 2a. While this structure achieves the function of air intake adjustment, it has a large number of components, increasing assembly complexity and manufacturing costs. The more complex external components also contribute to increased size and weight, burdening the user during operation and lacking intuitiveness in adjustment. Furthermore, the complex appearance makes it easy for paint residue to remain after painting, increasing the difficulty of cleaning and maintenance. In addition, conventional paint spray guns may have a risk of air leakage due to the large number of parts. Summary of the Invention

[0003] In view of the shortcomings of the aforementioned conventional technologies, the creator, based on years of practical experience in related industries, and after repeated trials and tests, completed this creation; that is, this creation provides an air intake structure for a paint spraying device, particularly an adjustable air intake structure with an air intake connector located at the air intake end of the paint spray gun, which controls the opening or obstruction of the air intake hole by rotating the adjusting sleeve, thereby adjusting the air intake flow rate, and is suitable for air intake adjustment devices of various pneumatic paint spray guns. Simple Explanation of the Diagram

[0004] [Figure 1] is a schematic diagram of the air intake connector and adjustment mechanism of a conventional paint spray gun.

[0005] [Figure 2] is a schematic diagram of the assembly of the adjustable air intake structure of the paint spray gun air intake connector in this invention.

[0006] [Figure 3] is a partial schematic diagram of the cross-sectional structure of AA in this work.

[0007] [Figure 4] is a schematic diagram of the action of adjusting the state of the sleeve locking air inlet in this creation.

[0008] [Figure 5] is a schematic diagram of the action of adjusting the sleeve to open the air intake port in this creation. Implementation

[0009] The following is a specific embodiment, described in detail with accompanying drawings: As shown in Figures 2 and 3, this invention includes:

[0010] The paint spray gun 10 has an air inlet 11 with an air inlet channel 12. The opening of the air inlet channel 12 is plugged with an end plug 13, and a connecting seat 14 is recessed near the air inlet channel 12. The bottom of the seat 14 is provided with a screw hole 15.

[0011] The air inlet connector 20 is a hollow cylinder with a stud 21 at one end, which is screwed into the bottom screw hole 15 of the seat 14 of the air inlet end 11 of the paint gun 10. This end is a closed end. An air-locking conical surface 22 is provided around the closed end near the stud 21, and several air outlet holes 23 are provided around the air-locking conical surface 22. A first airtight ring 24 is provided below the air outlet holes 23. An adjustment thread 25 is provided on the outer periphery of the air inlet connector 20 near the seat pivot. A standard-sized air inlet connector 26 is screwed onto the other end of the air inlet connector 20.

[0012] The adjusting sleeve 30 is a hollow tubular structure containing a thread 31. It is screwed onto the adjusting thread 25 near the seat pivot of the air inlet connector 20 and achieves airtightness through the first airtight ring 24 of the air inlet connector 20. One end of the adjusting sleeve 30 is provided with an air-locking cone surface 32 that can fit with the air-locking cone surface 22 of the air inlet connector 20. The outer periphery of the adjusting sleeve 30 is fitted with a second airtight ring 33 for airtightness with the seat 14 of the air inlet end 11 of the paint gun 10.

[0013] With the above-described components, as shown in Figure 4, when the adjusting sleeve 30 rotates around the axis of the air inlet connector 20, causing the air-locking cone surface 32 at one end of the adjusting sleeve 30 to engage with the air-locking inclined cone surface 22 of the air inlet connector 20, air is blocked from entering the paint gun 10. As shown in Figure 5, when the adjusting sleeve 30 rotates around the axis of the air inlet connector 20 to the other direction, the air-locking cone surface 32 at the end of the adjusting sleeve 30 disengages from the air-locking inclined cone surface 22 of the air inlet connector 20, exposing the air outlet 23 of the air inlet connector 20, allowing air to circulate. The size of the air outlet 23 of the air inlet connector 20 is used to adjust the amount of airflow.

[0014] In conclusion, compared with the tools used in daily life, this creation is superior to the tools used in daily life in the following aspects:

[0015] 1. This invention allows users to quickly and intuitively adjust the air intake of the paint gun simply by rotating the adjustment sleeve, making it easy to operate.

[0016] 2. The air intake connector and adjustment mechanism are integrated into one unit, which can effectively simplify the external structure of the paint gun, reduce its size and weight, and improve the convenience of cleaning and maintenance.

[0017] 1a: Air intake connector

[0018] 2a: Adjustment switch

[0019] 10: Spray paint gun

[0020] 11: Intake end

[0021] 12: Air intake duct

[0022] 13: End plug

[0023] 14: Seats

[0024] 15: Screw hole

[0025] 20: Air intake connector

[0026] 21: Stud

[0027] 22: Air-locked inclined cone surface

[0028] 23: Vent

[0029] 24: First airtight ring

[0030] 25: Adjustment thread

[0031] 26: Air intake connector

[0032] 30: Adjusting sleeve

[0033] 31: Thread

[0034] 32: Air-locked cone-shaped dish surface

[0035] 33: Second airtight ring

Claims

1. An adjustable air intake structure for a paint spray gun air inlet connector, comprising: a paint spray gun, wherein an air inlet channel is provided at its air inlet end, an end plug is provided at the opening end of the air inlet channel, and a seat is recessed near the air inlet channel, the bottom of the seat being provided with a screw hole; an air inlet connector seat, which is a hollow cylinder, one end of which is provided with a stud, screwed into the screw hole at the bottom of the seat at the air inlet end of the paint spray gun, the end being a closed end, an air-locking inclined conical surface is provided around the closed end near the stud, and several air outlets are provided around the air outlets, a first airtight ring is provided below the air outlets, an adjustment thread is provided on the outer periphery near the seat pivot of the air inlet connector seat, and a standard specification air inlet connector is screwed onto the other end of the air inlet connector seat. The adjusting sleeve is a hollow tubular structure with internal threads. The screw is fitted onto the adjusting thread near the seat pivot of the air inlet connector. One end of the adjusting sleeve is provided with an air-locking inclined cone surface, while the outer periphery of the adjusting sleeve is fitted with a second airtight ring.

2. The adjustable air intake structure of the paint gun air intake connector as described in claim 1, wherein the adjusting sleeve forms an airtight seal with the air intake connector seat through the first airtight ring, and the second airtight ring sleeved on its outer periphery can achieve an airtight seal with the seat of the paint gun air intake end, and can rotate along the axis by means of the adjusting thread on the outer periphery of the air intake connector seat, so that the air-locking and unlocking inclined cone surface of one end of the air intake connector seat is in contact with the air-locking and unlocking inclined cone surface of the air intake connector seat, thereby achieving the effect of air-locking and unlocking.

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