Air Flow Adjusting Device of Air Gun
An air flow adjusting device of air gun, includes a piston sleeve having a rod body, the rod body is provided with a cushion located between a base and an external threaded portion of the rod body, the external threaded portion is threaded with an internal threaded portion of an adjusting knob, the cushion is abutted against the inner wall of the adjusting knob. Thereby, by setting the cushion, the adjusting knob has the buffer effect, so that the moving range will not be too large, ensure the accuracy of adjustment, and the adjusting knob can be rotated by defining a slot in the piston seat, so that the function of adjusting the air flow rate can be achieved without using any tool, improving the operational convenience.
A portion of the disclosure of this patent document contains material which is subject to copyright protection. The copyright owner has no objection to any reproduction by anyone of the patent disclosure, as it appears in the United States Patent and Trademark Office patent files or records, but otherwise reserves all copyright rights whatsoever.
BACKGROUND OF THE PRESENT INVENTION Field of InventionThe present invention relates to an air flow adjusting device of air gun, and more particularly to an air flow adjusting device of air gun which can adjust the air flow rate without any tool and has simplified components.
Description of Related ArtsAir guns can be adjusted to achieve the stability of the initial firing speed, such as TW Pat. No. M534812, but the air gun disclosed in this patent must still be adjusted by tools. Therefore, the operation convenience still needs to be improved.
In view of this, an improved air gun is invented, such as TW Pat. No. M591611 (that is, U.S. patent Ser. No. 10/801,805), which can adjust the air flow rate without any tool. However, after the actual commercial operation, it is found that there are two airtight washers 301 (as shown in
In addition, after the assembly of the locking seat 20 and the spring 40, because of the elastic effect of the spring 40, the adjusting knob 30 is engaged in a basic position before adjustment, which is equal to the air flow rate being set at a basic value, and then change by the adjusting knob 30. However, if the locking seat 20 and the spring 40 are removed, the adjustment knob 30 will be easier to move and the move range will be too large after assembly, especially to the right side of
The present invention mitigates and/or obviates the aforementioned disadvantages.
SUMMARY OF THE PRESENT INVENTIONThe primary objective of the present invention is to provide an air flow adjusting device of air gun which can solve the trouble of conventional tool operation when adjusting the initial firing speed, has simplified components, and ensure that an adjusting knob is still in a basic position, so as to make the air flow rate adjusted easily and correctly.
The air flow adjusting device of air gun of the present invention comprises a piston seat, a piston sleeve and an adjusting knob. The piston seat is internally defined with an air flow channel having an air inlet at a lower part thereof and an elastic plug block corresponding to the air inlet. Both sides of the air flow channel are an air outlet and a closed opening. The piston seat is defined with at least one slot. The piston sleeve has an end head at one end thereof and a rod body at the other end thereof. The rod body is inserted into the air flow channel via the closed opening, and the end head is located outside the closed opening. The rod body has a base and an external threaded portion. The adjusting knob is located in the air flow channel of the piston seat and is defined with an internal threaded portion that is threaded with the external threaded portion of the rod body, so as to make the adjusting knob connected between the rod body of the piston sleeve and the elastic plug block. By rotating the adjusting knob, the total length of the piston sleeve and the adjusting knob can be adjusted, that is, the stroke position of the elastic plug block can be adjusted, so as to adjust the air flow rate. The surface of the adjusting knob is provided with a wiping portion, and the slot of the piston seat is located corresponding to the wiping portion. In addition, the adjusting knob has an inner wall. It is characterized in that: between the base and the external threaded portion is provided a cushion, the external threaded portion of the rod body is threaded with the internal threaded portion of the adjusting knob, and the cushion is abutted against the inner wall of the adjusting knob. Thereby, when the adjusting knob is adjusted to the direction of the base of the rod body, it has a basic position by the friction buffer by abutting the cushion against the inner wall of the adjusting knob, so as to avoid the excessive moving range, thus ensuring the accuracy of adjustment.
Therefore, it can be seen that the present invention has simplified components and can make the moving distance not too large, ensuing the accuracy of adjustment.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiments in accordance with the present invention.
Referring to
The piston seat 1 (as shown in
The piston sleeve 2 (as shown in
The adjusting knob 3 (as shown in
In addition, since the second airtight washers 34 are plastic products with proper elasticity, they has a certain friction resistance to the inner side 17 of the air flow channel 11, so that the adjustment knob 3 can achieve the function of rotating and positioning at any time, and even the fine-tuning function. The surface of the adjusting knob 31 is provided with a wiping portion 313, and the slot 16 of the piston seat 1 can correspond to the wiping portion 313 (as shown in
By the above-mentioned arrangements, the initial firing speed is determined by the air flow rate. When adjusting the initial firing speed (that is, when adjusting the air flow rate), the adjusting knob 3 can be rotated only by operating the wiping portion 313 by the finger via the slot 16 (as shown in
According to the above-mentioned structure, it can be seen that the present invention can make the moving distance not too large only by disposing the cushion 224, ensuing the accuracy, and is suitable for large toy guns or toy pistols.
While we have shown and described various embodiments in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
Claims
1. An air flow adjusting device of air gun, comprising:
- a piston seat being internally defined with an air flow channel having an air inlet at a lower part thereof and an elastic plug block corresponding to the air inlet, both sides of the air flow channel being an air outlet and a closed opening, the piston seat being defined with at least one slot,
- a piston sleeve having an end head at one end thereof and a rod body at the other end thereof, the rod body being inserted into the air flow channel via the closed opening, the end head being located outside the closed opening, the rod body having a base and an external threaded portion,
- an adjusting knob being located in the air flow channel of the piston seat and being defined with an internal threaded portion that is threaded with the external threaded portion of the rod body, so as to make the adjusting knob connected between the rod body of the piston sleeve and the elastic plug block, by rotating the adjusting knob, the total length of the piston sleeve and the adjusting knob being adjusted, a surface of the adjusting knob being provided with a wiping portion, the slot of the piston seat being located corresponding to the wiping portion, the adjusting knob having an inner wall,
- which being characterized in that: between the base and the external threaded portion of the rod body is provided a cushion, the external threaded portion of the rod body is threaded with the internal threaded portion of the adjusting knob, and the cushion is abutted against the inner wall of the adjusting knob.
Type: Application
Filed: Nov 1, 2020
Publication Date: Mar 24, 2022
Inventor: SHIH-CHE HU (Tainan City)
Application Number: 17/086,444