TWI424909B - Improved pneumatic device - Google Patents

Description

Improved pneumatic device

The present invention relates to an improved pneumatic device, and more particularly to an improved pneumatic device that is simple in construction, small in size, does not lose efficiency, and has a new gas path.

The concept of green environmental protection and the actual action have been around for a long time. Therefore, from the various energy sources in the early years, such as steam power, firepower and water power, to today's more efficient energy sources such as electricity, solar energy and aerodynamics, It shows that human technology is becoming more and more promising, and different energy sources or composite energy sources can be applied to various suitable applications. However, after all, some energy sources need to cost a lot of cost and damage the earth's ecology to produce efficiency, such as nuclear energy, firepower, etc., so these energy sources will be restricted to some large-scale industrial use or holistic people's livelihood; other can not be large at the same time Energy used in various users, such as solar energy, aerodynamics, etc., is widely used to make a single user or a small number of single collective users.

Aerodynamics is a typical energy source that has been widely used in recent years to enable a single user or a few single collective users. Pneumatic tools are one of the applications. Pneumatic tools include pneumatic wrenches for removing tire nuts, pneumatic nail guns, and pneumatic glue guns. These are all cheap, efficient pneumatic energy sources for self-employed applications in everyday life. However, how can this cheap energy be used effectively? The tools that the application depends on are naturally very important.

Moreover, due to the economic downturn, the small fortifications of many families are carried out by family members themselves to remove the high cost of hiring professionals. This situation is most typical in the United States. In the past few years, the United States has suffered the most from the melting and tsunami, but the professional market in the United States is artificially expensive. Therefore, if the average person can use simple and cheap ways to complete the simple work of the family, it is the best choice. Of course, professional applications, such as the use of pneumatic tools to build a house, are also the only way to reduce costs and increase efficiency. Take the construction of a house as an example. The average size of an American house is 16 miles between beams. Therefore, the length of the current nail gun should be constructed between the two beams with such spacing, which has certain inconvenience and difficulty.

Please refer to FIG. 16 , which is a first front view of a first-cylinder nail gun of the first prior art, wherein the dynamic cylinder nail gun comprises a lower portion disposed in a gun body 1 ′. The mobile cylinder 3' has a piston 4' for the nailing inside the cylinder 3', and at least two air-insertion washers 41' and 42' are disposed on the piston 4' to partition the interior of the cylinder 3' into a top cylinder chamber. 31' and a bottom cylinder chamber 32'; a main air chamber 10' is formed in the gun body 1', and is connected between the grip portion 11' in the gun body 1' and the periphery of the cylinder 3' to assemble the self-grip portion 11' The tail end is introduced with high-pressure air continuously supplied and maintained by a constant pressure, and a trigger valve 51' is provided at one end of the main air chamber 10', and a trigger 5' provided on the gun body 1' is driven to open and close. The main air chamber 10' of the grip 11' is connected to a passage between a trigger air passage 17' in the gun body 1'.

Referring to FIG. 17, a second front view of the first-stage dynamic cylinder type nail gun, wherein a head valve 8' is integrally formed on the top of the cylinder 3'; the head valve 8' is provided There is a main air valve port 81' and a gas stop ring 82', and the gun body 1' has an annular rib wall 12' therein, and the gas stop ring 82' can be closely attached to the annular rib wall 12' before the cylinder 3' is moved down. To close the passage between the main air chamber 10' and the top cylinder chamber 31' via the main air valve port 81', the air stop ring 82' can be disengaged from the annular rib wall 12' when the cylinder 3' is moved downward, and the An annular rib 83' is formed on the inner side of the top of the head valve 8', a cushion 84' is disposed on the top of the gun body 1', and at least one upper air vent 13' is connected to the top of the gun body 1' to be connected to the outside atmosphere. By the way, before the cylinder 3' is moved down, the annular rib 83' on the head valve 8' can open the passage between the upper escape hole 13' and the top cylinder chamber 31' to vent the high pressure in the top cylinder chamber 31'. The air, when the cylinder 3' is moved down, the annular rib 83' can be stopped on the cushion 84' to close the passage.

In view of the above, the conventional technology is shown in FIG. 17, the components of the right side such as the air stop ring 82', the main air valve port 81', the upper air vent hole 13', the annular rib 83', The head valve 8', etc., causes an increase in its length. Such a design, in conjunction with the aforementioned legal restrictions in the United States, limits the operation of the user, increases the production cost and the price of the single item, and is not competitive in commercial considerations.

Furthermore, please refer to the eighteenth to twentieth drawings, which are a second conventional fixed-cylinder nail gun pattern, and a second enlarged view of the fixed-cylinder nail gun of the second prior art. The second conventional fixed-cylinder nail gun Pressure and deflation state diagram. As shown in FIG. 18, the fixed cylinder type nail gun mainly has a fixed cylinder 101, a piston 102, a valve sleeve 103, a main air chamber 104, a top cylinder chamber 105, an exhaust gas seal 106, and An exhaust port 107, wherein the valve sleeve 103 is looped on the fixed cylinder 101 to control the high pressure gas of the main air chamber 104 to enter the top cylinder chamber 105, and then push the piston 102 to perform nailing. In operation, the exhaust gas seal 106 begins to exhaust after the nailing operation is completed, that is, the exhaust of the piston 102 when the nail is returned after the nail is hit. As shown in the nineteenth figure, the valve sleeve 103 is closed, so that the main air chamber 104 and the top cylinder chamber 105 are not in communication, and the exhaust gas seal 106 has been opened, so that the piston 102 completes the return stroke at this time. At this time, the gas in the top cylinder chamber 105 has been removed by the exhaust gas seal 106 and the exhaust port 107. As shown in the twentieth diagram, when the action of the eighteenth figure is completed, the space of the main air chamber 104 is refilled with the high pressure gas, and the valve sleeve 103 is forced to be opened again, and the gas enters the top cylinder as indicated by the broken line in the figure. The chamber 105; however, because the gas flow rate is fast, and due to design problems, the valve sleeve 103 and the exhaust gas seal 106 have an open and closed portion of the time overlap, so that the high pressure gas in the main gas chamber 104 enters the top cylinder chamber 105. A part of the gas leaks from the gap W1 and the exhaust port 107 where the exhaust gas seal 106 has not been completely closed, as shown by a broken line in the figure, so that the efficiency of pushing the piston 102 is reduced.

In view of the above second conventional technique, although the exhaust structure has been improved and the length is reduced, the valve sleeve and the exhaust gas seal overlap in the opening and closing operation time due to poor design, so Reduced efficiency.

Therefore, how to design an improved pneumatic device with simple structure, small size and no loss of efficiency to solve the bottleneck faced by the prior art is an issue that is currently being solved.

The object of the present invention is mainly to propose an improved pneumatic device for proposing an improved pneumatic device having a simple structure, a small size, no loss of efficiency, and a new gas path, thereby reducing production costs and increasing the scope of use.

An improved pneumatic device of the present invention comprises: a body, a hollow body, and defining an X-axis, and having a first end and a second end, and comprising: a mobile cylinder located at In the body, the mobile cylinder is reciprocally movable along the X-axis in the body, and has an exhaust valve, a vent hole located near the first end, and a unidirectional second ring valve At least one air hole and one annular rib; a hammer piston rod is located in the mobile cylinder and is coaxial with the mobile cylinder, and can reciprocate along the X axis in the mobile cylinder to move The cylinder is divided into a top cylinder chamber and a bottom cylinder chamber; a pair of buffering devices are respectively located near the first end of the body 1 and near the second end of the body to buffer the nail piston rod to move to the second end The impulse and the movement back to the first end; a main air chamber is located at the inner circumference of the body 1 and has an air passage; a venting hole is non-parallel to the X-axis and adjacent to the first End, and form an exhaust passage with the exhaust valve and the exhaust hole to facilitate the nailing Lever moves Returning to the first end of the exhaust; an upper air chamber is located at the inner circumference of the body; a middle air chamber is located at the inner circumference of the body; and a return air chamber is located at the inner circumference of the body and adjacent to the first The two ends enter the high pressure gas of the return air chamber through the second ring valve when the storage nail piston rod moves to the second end and does not start to move to the first end, and the annular rib is interposed Between the chamber and the middle air chamber; a grip portion defining a Y-axis and connecting to the X-axis of the body at a nearly perpendicular angle, and being a hollow body; and a trigger The device is located near the grip portion. When the trigger device is pressed, the high pressure gas in the grip portion can pass through the trigger device and the air passage to reach the upper air chamber; wherein, when the trigger device is pressed and released, the grip portion is After the high pressure gas passes through the trigger device, the air passage, the upper air chamber, the top cylinder chamber, the second ring valve, the return air chamber, the air hole, the bottom cylinder chamber, the exhaust hole and the trigger device, the reciprocating of the movable cylinder and the nail piston rod is completed. Move.

The invention will be further understood from the following description of the invention and the appended claims.

The preferred embodiments of the present invention are described in detail below with reference to the drawings. Please also refer to the first drawing, which is a front view of a preferred embodiment of an improved pneumatic device of the present invention. The improved pneumatic package includes: A body 1 is a hollow body and defines an X-axis and has a first end 1A and a second end 1B, and includes: a mobile cylinder 11 located in the body 1, the movement The cylinder 11 can be reciprocally moved along the X-axis in the body 1, that is, including the outward movement from the first end 1A to the second end 1B, and then moved back from the second end 1B to the first end. In the return stroke of 1A, the position of the first end 1A is the starting position of the moving cylinder 11 for one movement stroke, the second end 1B is the middle position of the entire stroke, and the outer surface of one of the movable cylinders 11 and the hollow body of the body 1 One of the inner surfaces has an exhaust valve 1X near the first end (see Figure IXA), a venting opening 1Y near the first end (see Figure 9A), and one at the first a one-way second ring valve 115 near the middle between the one end 1A and the second end 1B, two air holes 116 and two annular ribs 18A, 18B near the second end 1B; a striking piston rod 12 Located in the mobile cylinder 11 and coaxial with the mobile cylinder 11, the reciprocating movement can be performed in the movable cylinder 11 along the X-axis, that is, from the The one end 1A moves to the second end 1B, and then moves back from the second end 1B to the return end of the first end 1A to partition the mobile cylinder 11 into a top cylinder chamber 111 and a bottom cylinder chamber 112; A pair of buffering devices 13, 14 are respectively located in the movable cylinder 11 near the first end 1A of the body 1 and the second end 1B of the body 1 to buffer the impulse of the nailing piston rod 12 to move to the second end 1B. Move back to the impulse of the first end 1A; The plurality of ventilation structures further includes: a main air chamber 15 located on an inner circumference of the body 1 and having an air passage 151; a venting opening 16 which is non-perpendicular to the X-axis and adjacent to the At one end 1A, the squeezing piston rod 12 is moved back to the exhaust of the first end 1A, that is, the exhaust passage 1Z and the exhaust passage 1Y are used to exhaust the exhaust passage 1Z. An upper air chamber 17 is located at the inner circumference of the body 1; and a middle air chamber 17A is located at the inner circumference of the body 1; a return air chamber 18 is located at the inner circumference of the body 1 and adjacent to the second end 1B, the high pressure gas entering the return air chamber 18 through the second ring valve 115 when the storage nail piston rod 12 is moved to the second end 1B and has not yet started to move toward the first end 1A, the annular rib 18A Between the upper air chamber 17 and the middle air chamber 17A; a grip portion 2, the grip portion 2 defines a Y-axis direction, and is connected to the X-axis of the body 1 at a nearly vertical angle. And a hollow body, the first end 21 of the grip portion 2 and the body 1 is in communication with the main air chamber 15, and the first end 21 of the grip portion 2 has a second end 22 opposite thereto There is a high-pressure pipe joint (not shown) that can be coupled with a high-pressure gas pipe to fill the hollow cavity with high-pressure gas; a trigger device 3 is located near the grip 2 and is located on the Y-axis of the grip 2 The center line has an opposite side to the side adjacent to the main air chamber 15, When the trigger device 3 is pressed, the high pressure gas in the grip portion 2 can pass through the trigger device 3 and the air passage 151 to reach the upper air chamber 17; and a tubular body 1C is attached to the second body of the body 1. The outside of the end 1B is coaxial with the mobile cylinder 11 . In the preferred embodiment, the tubular body 1C is a nail gun barrel; wherein, when the trigger device 3 is pressed and released, the grip portion 2 is The high pressure gas passes through the trigger device 3, the air passage 151, the upper air chamber 17, the top cylinder chamber 111, the second ring valve 115, the return air chamber 18, the air hole 116, the bottom cylinder chamber 112, the exhaust hole 16 and the trigger device 3, The reciprocating movement of the movable cylinder 11 and the nailing piston rod 12 is completed.

Please refer to the second to ninth drawings, which are the continuous action diagrams of the interaction relationship between the components of the pneumatic device when the trigger device of the preferred embodiment of the present invention is pressed; As shown in the figure, when the trigger device 3 is pressed, one end 322 of the trigger device 3 moves toward the first end 1A, and the high pressure gas in the grip portion 2 enters the air passage 151 via the trigger device 3, thereby being filled in the upper air chamber. 17 (the path through which the gas passes, as shown by the dotted line in the third figure), when the pressure reaches a certain value, the annular rib 18A is pressurized by the high pressure gas in the upper chamber 17 due to the ratio of the gas pressure area ratio. Pressing to move toward the second end 1B, that is, the cylinder 11 starts to move from the first end 1A of the body 1 to the second end 1B of the body 1; as shown in the fourth figure, the cylinder is in an open state, that is, a cylinder 11 and a gap W between the first end 1A, the high pressure gas in the main air chamber 15 then enters between the pin piston rod 12 and the buffer device 13 by the gap W, that is, the top cylinder chamber 111, and then pushes The pinning piston rod 12 is moved to move the pin piston rod 12 from the first end 1A to the second end 1B; as shown in the fifth figure, when the stud piston rod 12 moves through the position of the second ring valve 115, the high voltage The vapor body enters the return air chamber 18 via the irreversible second ring valve 115, as shown by the dotted line head of the fifth figure. At this time, the return air chamber 18 gradually accumulates gas pressure, and the piston rod 12 is struck. Moving to the buffer device 14; as shown in the sixth figure, the volume of the top cylinder chamber 111 at this time has been maximized, and the high pressure gas can no longer enter the return air chamber 18 through the second ring valve 115; 7 and 8 show that when the trigger device 3 is released, the end 322 of the trigger device 3 is moved in the direction of the second end 1B. At this time, due to the cooperation of the internal components of the trigger device 3 (will be As will be described in detail later, the inside of the grip portion 2 cannot be communicated with the upper air chamber 17 and the air passage 151, and at this time, the cylinder is still in the open state, and in the seventh figure, the inside of the grip portion 2 is still with the upper air chamber 17, The air passages 151 are in communication, as shown by the dotted line in the figure, and in the eighth figure, the inside of the grip 2 is no longer possible. The upper air chamber 17 and the air passage 151 are in communication, as shown by the dotted line in the figure; as shown in the ninth figure, since the high pressure gas of the grip portion 2 no longer enters the upper air chamber 17, the upper air chamber 17 is not high. The pressure gas, therefore, at this time, the gas pressure of the return air chamber 18 has accumulated to a certain pressure, and due to the air pressure area ratio, the pressure forces the annular rib 18B to move toward the first end 1A, that is, the cylinder 11 starts from The second end 1B of the body 1 moves to the first end 1A of the body 1 to assume a closed cylinder state. Due to such movement, the return air chamber 18 is communicated with the bottom cylinder chamber 112 via the air hole 116. That is, the high-pressure gas in the return air chamber 18 enters the bottom cylinder chamber 112 via the air hole 116, and the residual gas in the upper air chamber 17 is discharged to the atmosphere via the air passage 151 and another outlet of the trigger device 3 (not shown). The two gas paths are shown by the dotted arrows in the figure; please refer to the first figure and the ninth A picture below. The ninth A picture shows that the piston has not completed the return stroke and the closed cylinder is in the state of the top cylinder chamber. Schematically, and in the text description, the nailing piston rod 12 will quickly move from the second end 1B to the first end 1A, and the internal gas of the top-level cylinder chamber 111, which is gradually smaller in volume, also passes through the internal structure of the body 1. And the vent hole 16 is released into the atmosphere, that is, when the hammer piston rod 12 has not completed the return stroke and the closed cylinder state, the movable cylinder 11 is close to the exhaust valve 1X and the vent hole at the first end 1A. 1Y, which communicates with the venting opening 16 adjacent to the first end 1A and non-parallel to the X-axis to form the exhaust passage 1Z for gas exclusion, so that the outward and return strokes are carry out.

Please refer to the tenth figure, which is a schematic diagram of a trigger device of the improved pneumatic device of the present invention, wherein the trigger device 3 comprises: a casing 31, which is a hollow cavity body and has a plurality of gas stop washers 314 and one side holes 311. The side hole 311 is a place where the high pressure gas enters and exits from the housing 31, and includes a first end 312 and a second end 313. The first end 312 and the second end 313 of the housing 31 are oriented to the body 1 The first end 1A and the second end 1B correspond to each other, and the first end 312 and the second end 313 of the housing 31 each have a first opening 3121 and a second opening 3131; a trigger shaft 32 axially received in the housing 31, the one end 322 portion of which protrudes out and can enter the second opening 3131 of the housing 31, and has two air retaining washers 321; The trigger valve head 33 is axially received in the housing 31 and is a hollow cavity having a first opening 331, a second opening 332 and a return spring 334, and the second opening 332 The trigger shaft 32 is received therein and coaxial with each other. One of the outer surfaces of the trigger valve head 33 has a plurality of ring valves 335, 332A, 333, and a portion of the trigger valve head 33 protrudes and can enter the housing. The first opening 311 of the 31 is for the high pressure gas to enter and exit. The return spring 334 is disposed at an opposite end 323 of the trigger shaft 32 protruding from the end of the second opening 3131 of the housing 31. And abutting against an inner surface of the trigger valve head 33 to assist the resetting action of the trigger shaft 32 after retracting into the interior of the trigger valve body 33; wherein, via the housing 31, the trigger shaft 32 and the trigger valve head 332 The piston-type motion between the three is combined to cause the cylinder opening state generated in the body 1 and the subsequent closed cylinder state to complete the shifting Type cylinder 11 with a piston rod 12 reciprocating movement of the striking.

As described above, with respect to the mating portions of the various component structures inside the trigger device 3, reference is made to the eleventh through fifteenth drawings, which is a modified pneumatic device of the present invention, when the trigger shaft is pressed, A continuous motion diagram of the interaction between the components of the trigger device. As shown in the eleventh figure (all the related component numbers shown in the eleventh to fifteenth figures, please refer to the component number and component position shown in the tenth figure together), when the grip 2 (not shown) ) high When the air pipe is compressed, the high pressure gas fills the grip portion 2 and begins to be filled in the trigger device 3 via the first opening 331. At this time, the cylinder 11 (not shown) assumes a closed cylinder state when the trigger shaft is ready to be pressed. When the core 32 and the air stop washer 321 are located in the second opening 3131, that is, the end 322 of the trigger shaft 32 is partially entered into the housing 31 by the second opening 3131 of the housing 31, the high pressure gas is replaced by the trigger valve head 33. An opening 331 enters the trigger valve head 33 and enters the trigger valve head 33 via the gap between the trigger shaft 32 and the inner surface of the trigger valve head 33 against the second end 313 of the housing 31. At the same time, the dotted arrow in the figure indicates that the trigger valve head 33 is pushed to move from the second end 313 to the first end 312, and a space M is left. At this time, the ring valve 335 abuts against the first opening 3121. Thus, the entry of the high-pressure gas is closed; as shown in Fig. 12, when the trigger shaft 32 is pressed and the air-stop gasket 321 is separated from the second opening 3131, the high-pressure gas in the space M is blocked by the air-tight gasket 321 And the gap between the end 322 and the inner surface of the second opening 3131 leaks out to the atmosphere, and the dotted line in the figure The arrow indicates; as shown in the thirteenth figure, the trigger valve head 33 is pushed by the high pressure gas in the grip 2 to the second end 313, and is again abutted against the second end 313 in the cavity of the housing 31. Then, the ring valve 335 no longer abuts against the first opening 3121, thereby opening the entry of the high pressure gas, and the ring valve 332A is connected to the casing 31, and the closed high pressure gas is discharged from the side hole 311 of the casing 31 to enter the air passage 151. And entering the upper air chamber 17, as indicated by the dotted arrow in the figure, at this time, due to the relationship of the pressure area ratio, the cylinder 11 starts to move from the first end 1A of the body 1, and wants to go to the present The second end 1B of the body 1 is in an open state, and the high pressure gas in the main air chamber 15 then enters between the pin piston rod 12 and the buffer device 13 from the gap W, and the pin piston rod 12 is at the time by the body The first end 1A of 1 moves to the second end 1B of the body 1 and is positioned; as shown in Fig. 14, when the trigger shaft 32 is released and the air lock washer 321 is completely located in the second opening 3131, the trigger When the end 322 of the shaft 32 is ejected from the housing 31 by the second opening 3131 of the housing 31, the second opening 3131 is again closed by the air lock washer 321; as shown in the fifteenth figure, the same condition is as described above. The high pressure gas again enters the trigger valve head 33 from the first opening 331 of the trigger valve head 33, and enters the trigger valve head 33 against the shell via the gap between the trigger shaft 32 and the inner surface of the trigger valve head 33. The cavity in the body 31 is close to the second end 313, so the trigger valve head 33 is pushed to move from the second end 313 to the first end 312, and the space M is left. At this time, the ring valve 335 abuts the first At the opening 3121, thereby closing the entry of the high pressure gas of the grip 2, the ring valve 332A is disengaged from the housing, and the high pressure air of the upper air chamber 17 is passed through the gas. The passage 151 and an opening (not shown) in the casing 31 near the second end 313 leave the atmosphere, and at this time, the high pressure gas has previously entered the return air chamber from the second ring valve 115, causing the return trip. The increase in the pressure in the air chamber, together with the pressure of the original medium air chamber 17A, forces the annular rib 18A to move from the second end 1B to the first end 1A, thereby exhibiting a closed cylinder state, due to such movement, causing the return air chamber 18 to be inside. The high pressure gas can enter the bottom cylinder chamber 112 from the air vent 116 to push the nail piston rod 12 from the second end 1B to the first end 1A, and the gas of the top cylinder chamber 111 can be moved. The exhaust passage formed by the exhaust hole 1Y of the cylinder 11 and the exhaust valve 1X enters the atmosphere through the exhaust hole 16.

The present invention has indeed been solved in comparison with the problem of the second conventional technique for reducing the efficiency of the push. Referring to the fifth figure, the moving cylinder 11 assumes the cylinder opening state, and the high pressure gas of the main air chamber 15 pushes the nail rod 12 to move from the first end 1A to the second end 1B, and the exhaust end of the movable cylinder 11 is exhausted. Since the valve 1X has closed the exhaust passage, the high-pressure air is not discharged from the exhaust hole 16, so there is no problem of air leakage when pushing the piston rod 12, so there is no problem of air leakage from this path. .

Therefore, in view of the above, the improved pneumatic device proposed by the present invention is an improved pneumatic device having a simple structure, a small size, no loss of efficiency, and a new gas path. After careful design, it not only resets the gas path, but also simplifies the structure and increases the efficiency. Therefore, the production cost is reduced, and the use range is increased due to the reduction of the volume.

In summary, when the invention of the case has been industrially utilized, novel and progressive, it meets the requirements of the invention patent. The above is only the preferred embodiment of the invention, and is not intended to limit the scope of the invention. And the equivalent variations and modifications made by the scope of the invention are covered by the scope of the invention.

1’‧‧‧ gun body

10’‧‧‧Main air chamber

11’‧‧‧ grip

12’‧‧‧Ring rib wall

13’‧‧‧Escape the hole

17’‧‧‧ Trigger airway

3'‧‧‧Mobile cylinder

31’‧‧‧Top cylinder room

32'‧‧‧ bottom cylinder room

4’‧‧‧Piston

41'‧‧‧ gas seal

42'‧‧‧ air lock washer

5'‧‧‧ trigger

51'‧‧‧Layer valve

8'‧‧‧ head valve

81’‧‧‧Main air valve port

82’‧‧‧ gas ring

83’‧‧‧Ring ribs

84’‧‧‧ cushion

1‧‧‧ Ontology

1A‧‧‧ first end

1B‧‧‧ second end

1C‧‧‧ tubular body

1X‧‧‧Exhaust valve

1Y‧‧‧ venting holes

1Z‧‧‧ exhaust duct

101‧‧‧ fixed cylinder

102‧‧‧Piston

103‧‧‧ valve sleeve

104‧‧‧Main air chamber

105‧‧‧Top cylinder room

106‧‧‧Exhaust gas seal

107‧‧‧Exhaust port

11‧‧‧Mobile cylinder

111‧‧‧Top cylinder room

112‧‧‧Bottom cylinder room

115‧‧‧Second ring valve

116‧‧‧ stomata

12‧‧‧Piston

13‧‧‧buffering device

14‧‧‧ buffer device

15‧‧‧Main air chamber

151‧‧‧ airway

16‧‧‧ venting holes

17‧‧‧Upper air chamber

17A‧‧‧中气室

18‧‧‧Return air chamber

18A‧‧‧Ring ribs

18B‧‧‧Ring ribs

2‧‧‧ grip

21‧‧‧ first end

22‧‧‧ second end

3‧‧‧ Trigger device

31‧‧‧Shell

311‧‧‧ side hole

312‧‧‧ first end

3121‧‧‧ first opening

313‧‧‧ second end

3131‧‧‧ second opening

314‧‧‧ gas seal

32‧‧‧ trigger axis

321‧‧‧ gas seal

322‧‧‧

323‧‧‧

33‧‧‧Layer valve head

331‧‧‧ first opening

332‧‧‧ second opening

332A‧‧‧ ring valve

333‧‧‧ ring valve

334‧‧‧Return spring

335‧‧‧ ring valve

M‧‧‧ Space

W‧‧‧ gap

W1‧‧‧ gap

X‧‧‧ axial

Y‧‧‧ axial

BRIEF DESCRIPTION OF THE DRAWINGS The first drawing is a front view of a preferred embodiment of an improved pneumatic device of the present invention; the second to ninth drawings are an improved pneumatic device of the present invention, which is pneumatic when the trigger device is depressed. A continuous action diagram of the interaction between the various components of the apparatus; Figure IX is a diagram of the gas discharge of the top cylinder chamber when the piston has not completed the return stroke and in the closed cylinder state; the tenth diagram is an improved pneumatic device of the present invention. Trigger device diagram; eleventh to fifteenth drawings are the improved pneumatic device of the present invention. In the preferred embodiment of the preferred embodiment, when the trigger axis is pressed, the interaction diagram of the interaction between the components of the trigger device; Figure 6 is a first front view of a first-stage dynamic cylinder type nail gun; Figure 17 is a second front view of the first prior art moving cylinder nail gun; Figure 8 is a fixed-cylinder nail gun pattern of a second conventional technique; Fig. 19 is a partially enlarged view of the fixed-cylinder nail gun of the second conventional technique; and the twentieth diagram is a pressure and deflation state diagram of the fixed-cylinder nail gun of the second conventional technique.

1‧‧‧ Ontology

1A‧‧‧ first end

1B‧‧‧ second end

1C‧‧‧ tubular body

1X‧‧‧Exhaust valve

1Y‧‧‧ venting holes

1Z‧‧‧ exhaust duct

11‧‧‧Mobile cylinder

111‧‧‧Top cylinder room

112‧‧‧Bottom cylinder room

115‧‧‧Second ring valve

116‧‧‧ stomata

12‧‧‧Piston

13‧‧‧buffering device

14‧‧‧ buffer device

15‧‧‧Main air chamber

151‧‧‧ airway

16‧‧‧ venting holes

17‧‧‧Upper air chamber

17A‧‧‧中气室

18‧‧‧Return air chamber

18A‧‧‧Ring ribs

18B‧‧‧Ring ribs

2‧‧‧ grip

21‧‧‧ first end

22‧‧‧ second end

3‧‧‧ Trigger device

X‧‧‧ axial

Y‧‧‧ axial

Claims (6)

An improved pneumatic device comprising: a body, a hollow body, and defining an X-axis, and having a first end and a second end, and comprising a mobile cylinder, a nail piston rod and At least one venting hole, the movable cylinder and the nailing piston rod are respectively reciprocally movable along the X-axis in the body, that is, including a movement from the first end to the second end, and then Moving back from the second end to the return end of the first end, when the mobile cylinder completes the outward trip, it is an open cylinder state, and when the return stroke is completed, it is a closed cylinder state, characterized in that the mobile cylinder has at least one exhaust hole And at least one exhaust valve located at an outer edge of the movable cylinder, when the hammer cylinder has not completed the return stroke and the closed cylinder state, the movable cylinder is close to the exhaust valve and the exhaust hole at the first end, The venting opening is adjacent to the venting opening adjacent to the first end and non-parallel to the X-axis to form an exhaust passage for gas exclusion. The improved pneumatic device of claim 1, wherein the mobile cylinder is located in the body and has a one-way second ring valve, at least one air hole and an annular rib; The nailing piston rod is located in the mobile cylinder and is coaxial with the mobile cylinder, and is reciprocally movable along the X axis in the moving cylinder to partition the mobile cylinder into a top cylinder chamber and a The bottom cylinder chamber; the improved pneumatic device further has a pair of buffer devices and a plurality of ventilation knots a return air chamber, a grip portion and a trigger device: the pair of buffer devices are respectively located near the first end of the body and near the second end of the body 1 to buffer the impulse of the nail piston rod to move to the second end And the movement back to the first end; the plurality of ventilation structures further includes: a main air chamber located on an inner circumference of the body and having an air passage; and an upper air chamber located on an inner circumference of the body, and The air passage is connected to each other; and a middle air chamber is located at an inner circumference of the body and communicates with the main air chamber; the return air chamber is located at an inner circumference of the body and adjacent to the second end to store the nail a high pressure gas that enters the return air chamber through the second ring valve when the piston rod moves to the second end and does not start moving toward the first end, the annular rib is between the upper air chamber and the middle air chamber The grip portion defines a Y-axis and is connected to the X-axis of the body at a nearly perpendicular angle, and is a hollow cavity, and the main air chamber is in communication with the grip portion; Trigger device, located near the grip, when the trigger device is pressed , Can grip portion of the high pressure gas through the trigger means, and reaches the airway of the upper chamber. The improved pneumatic device of claim 2, wherein the first end of the grip portion and the body is connected to the main air chamber, and the grip portion is The opposite end of the first end can be coupled to the high pressure pipe joint of the high pressure gas pipe to fill the hollow cavity with high pressure gas. The improved pneumatic device of claim 2, wherein the trigger device comprises: a casing, a hollow body having a plurality of air-stop gaskets and at least one side hole, the side holes being high-pressure gas Wherein the housing enters and exits, and includes a first end and a second end, the first end and the second end of the housing are in a direction corresponding to the first end and the second end of the body, and the first end of the housing One end and the second end each have a first opening and a second opening; a trigger shaft axially received in the housing, one end portion of which protrudes and can enter the second of the housing An opening, and having at least two gas retaining washers; and a trigger valve head axially received in the housing and being a hollow cavity having a first opening, a second opening and a return spring, and The second opening accommodates the trigger shaft center and is coaxial with each other, and one of the outer surfaces of the trigger valve head has a plurality of ring valves, and a part of the trigger valve head protrudes and can enter the housing An opening, the first opening is for the inflow and out of high pressure gas, and the return spring ring is arranged on the trigger shaft An opposite end of the end of the second opening of the housing, and abutting against an inner surface of the trigger valve head to assist in a resetting action after the trigger shaft portion is retracted into the interior of the trigger valve body; wherein, through the housing Piston between the trigger shaft and the trigger valve head The motion fits to cause the cylinder opening state generated in the body and the subsequently closed cylinder state to complete the reciprocating movement of the movable cylinder and the nail piston rod. The improved pneumatic device of claim 2, further comprising: a tubular body mounted outside the second end of the body and coaxial with the mobile cylinder. The improved pneumatic device of claim 5, wherein the tubular system is a nail gun barrel.