IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0563167
(2006-11-25)
|
등록번호 |
US-7395954
(2008-07-08)
|
우선권정보 |
TW-95139137 A(2006-10-24) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
12 |
초록
▼
A pneumatic nail gun includes a gun body having an immovable cylinder therein; a hitting piston disposed in the cylinder; a main air housing collecting a compressed high pressure air with a constant pressure; and at least one main passage disposed at a peripheral portion of the cylinder or a side of
A pneumatic nail gun includes a gun body having an immovable cylinder therein; a hitting piston disposed in the cylinder; a main air housing collecting a compressed high pressure air with a constant pressure; and at least one main passage disposed at a peripheral portion of the cylinder or a side of the main air housing, the at least one main passage having a valve bolt therein to divide the main passage into a top passage, a middle valve chamber, and a bottom passage, the top passage and the middle valve chamber being connecting with the main air housing for introducing and gathering high pressure air therein, the middle valve chamber being connecting with the bottom passage via a main valve opening, the valve bolt being capable of controlling the opening and closing of the main valve opening for rapidly repositing the piston.
대표청구항
▼
What is claimed is: 1. A pneumatic nail gun comprising: a gun body having an immovable cylinder therein, a hitting piston being disposed in the cylinder, the hitting piston dividing the cylinder into a top chamber and a bottom chamber, a main air housing collecting compressed high pressure air with
What is claimed is: 1. A pneumatic nail gun comprising: a gun body having an immovable cylinder therein, a hitting piston being disposed in the cylinder, the hitting piston dividing the cylinder into a top chamber and a bottom chamber, a main air housing collecting compressed high pressure air with a constant pressure, and a trigger at one end of the main air housing driving the high pressure air to hit a nail; at least one main passage disposed at a peripheral portion of the cylinder or a side of the main air housing, the at least one main passage having a valve bolt therein to divide the main passage into a top passage, a middle valve chamber, and a bottom passage, the top passage and the middle valve chamber being connected with the main air housing for introducing and gathering high pressure air therein, the middle valve chamber being connected with the bottom passage via a main valve opening, the valve bolt being capable of controlling the opening and closing of the main valve opening; and a sleeve valve disposed between the bottom passage and the main air housing, to open and close fluid communication from the bottom chamber to atmosphere, wherein before the piston hitting the nails, the high pressure air in the top passage drives the valve bolt downwardly to move to close the main valve opening to close the fluid communication between the middle valve chamber and the bottom passage, and the high pressure air in the main air housing drives the sleeve valve to move upwardly to open the fluid communication from the bottom chamber to the atmosphere, when the piston hits the nails and before the reposition, the high pressure air in the top passage is discharged to make the high pressure air in the middle valve chamber to drive the valve bolt upwardly such that the valve bolt moves to open the main valve opening for guiding the high pressure in the main air housing continuously into the bottom passage via the middle valve chamber, moving the sleeve valve downwardly to close the fluid communication from the bottom chamber to the atmosphere for gathering the high pressure air in the bottom chamber to rapidly drive the piston to upwardly move to reposit, when the piston reposits, the valve bolt moves down to close the main valve opening. 2. The pneumatic nail gun as claimed in claim 1, wherein the gun body includes at least one ear portion having at least one ear hole, and a cover covers a top portion of the ear portion, the main passage is disposed at a peripheral portion of the cylinder and the position surrounded by the ear portion and the cover. 3. The pneumatic nail gun as claimed in claim 2, further comprising a top through hole and a bottom through hole disposed at the ear portion or respectively disposed at the ear portion and the cover, the top through hole guiding the high pressure air in the main air housing into the top passage, the bottom through hole guiding the high pressure air in the main air housing into the middle valve chamber. 4. The pneumatic nail gun as claimed in claim 1, wherein the gun body comprises a rib wall disposed adjacent to the cylinder, the rib wall comprises at least one rib hole, the top portion of the rib wall is covered by a cover, the main passage is disposed at a side of the cylinder and between the rib hole and cover. 5. The pneumatic nail gun as claimed in claim 4, further comprising a top through hole and a bottom through disposed at the ear portion or repectively disposed at the ear portion and the cover, the top through hole guiding the high pressure air in the main air housing into the top passage, the bottom through hole guiding the high pressure air in the main air housing into the middle valve chamber. 6. The pneumatic nail gun as claimed in claim 1, wherein the cylinder further comprises at least one top valve hole connecting with the top passage, the top valve hole controls the fluid communication between the top passage and the top chamber. 7. The pneumatic nail gun as claimed in claim 1, wherein the cylinder further comprises at least one bottom valve hole connecting between the bottom passage and the bottom air chamber. 8. The pneumatic nail gun as claimed in claim 1, wherein the portion of the valve bolt disposed in the top passage has a surface of a first area, and the portion of the valve bolt disposed in the middle valve chamber has a surface of a second area, the first area is larger than the second area. 9. The pneumatic nail gun as claimed in claim 1, wherein the top passage includes a spring therein abutting the valve bolt to downwardly move to close the main valve opening, the spring has a pushing force smaller than the force of the high pressure air gathering in the bottom passage to drive the valve bolt to upwardly move. 10. The pneumatic nail gun as claimed in claim 1, further comprising a lower chamber disposed between the sleeve valve and the inner wall of the gun body, the gun body including a guiding hole for guiding the high pressure air in the main air housing to the lower chamber, the lower chamber having a top surface with a third area that is pushed by the high pressure air, the lower chamber also having a top surface with a fourth area that is pushed by the high pressure air in the bottom passage, the third area being smaller than the fourth area. 11. The pneumatic nail gun as claimed in claim 1, wherein the fluid communication from the bottom chamber to the atmosphere is formed by at least one exhausting hole disposed at a portion of the cylinder and connected with the bottom chamber, and a bottom exhausting hole disposed at a bottom portion of the gun body and connected to the atmosphere, the fluid communication between the exhausting holes is controlled by sleeve valve.
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