TW200950941A - Nail gun with pneumatic safety - Google Patents

Abstract

A nail gun with a pneumatic safety comprises a nail discharge part, a gas storage chamber, a control gas passage body selectively communicated with the gas storage chamber, a triggering member, a safety mechanism having a safety member, a top inner base disposed in the body and defining a control gas chamber with the body in communication with the control gas passage, and a startup unit disposed in the body and including a first switch valve selectively communicated with the gas storage chamber and a second switch valve selectively communicated with the exterior and operably connected with the safety member. When the first switch valve is actuated and the safety member moves no greater than a safety distance relative to the nail discharge part, the first switch valve blocks the high pressure gas supplied from the gas storage tank, and the residual high pressure gas in the first switch valve is discharged to the exterior via the second switch valve. The high pressure gas in the control gas chamber is discharged to the exterior via the control gas passage and the first switch valve, thereby actuating the top inner base. When the first switch valve is actuated and the safety member moves greater than the safety distance, the high pressure gas supplied from the gas storage tank passes through the first switch valve and the control gas passage and enters the control gas chamber, and the high pressure gas supplied from the gas storage tank passes through the first switch valve and saves to the second switch valve.

Description

200950941 IX. Description of the invention: [Technical field to which the invention pertains] In particular, it relates to a pneumatic insurance. The present invention relates to a type of injection and grabbing. [Prior Art]

❹ As shown in Fig. 1 and 2, a conventional pneumatic safety type nailing (Taiwan invention patent No. 2, No. 4324) includes a nailing member placed in the outer casing 1 - with the shell! Connecting and accommodating a plurality of nails 3 (Η nails έ 3, a safety mechanism 4 movably mounted on the outer casing i, a top inner seat 5 disposed in the outer casing i, and - including __ The trigger valve 7 and an actuator 6 of the contact valve 8. The outer casing 1 has a nail outlet portion 1〇1, a piston chamber 102, and a gas storage chamber for storing a high-pressure gas 6〇2. 1〇3, and a control air passage 1 〇4 selectively connected to the trigger valve 7. The safety mechanism 4 has a safety member 401 movably disposed on the nail outlet portion 〇1, and The cam member 4〇2 of the contact valve 8. The safety member has an outwardly facing first end portion 403 and an inwardly facing second end portion 4〇4, and the zinc cam member 402 has a second end portion 4 adjacent thereto. The push end 4〇5 of the crucible 4, and a driven end 406 adjacent to the contact valve 8. The control air chamber 501 that is in communication with the control air passage 104 can be defined between the hollow top inner seat 5 and the outer casing 1. The control valve chamber 5 is provided with a portion of the high-pressure gas 602. The trigger valve 7 has a body 701 disposed on the outer casing 1 and a valve stem 7〇2 movably disposed on the body 701. The sealing ring 703, 704, 705 is disposed on the rod 702 of the valve 5 200950941. The body 701 has a first aisle 706, a second aisle 707, and a third connected to the sump 103. Aisle 708, and a chamber 709. When the valve stem 702 is not pushed by a trigger 601, the seal ring 704 seals the chamber 709 and blocks between the second and third passages 707, 708. The contact valve 8 has a body 801 disposed on the outer casing 1 , a plug 802 movably disposed on the body 801 , a sealing ring 803 disposed on the plug 802 , and abutting A compression spring 804 between the body 801 and the plug 802, the plug 802 has a cam surface 805 that abuts the driven end 406 of the cam member 402. The body 801 defines a third aisle 708 communicating channel 901, an upper chamber 902 communicating with the channel 901, a lower chamber 903, and a plurality of first openings 904 communicating selectively with the upper chamber 902, are disposed below the first openings 904 a second opening 905, a communication space 906 connecting the first and second openings 904, 905, and an exhaust outlet 907 Thereby, as shown in FIGS. 3 and 4, when the first end portion 403 of the securing member 401 is positioned within a predetermined distance D (see FIG. 1) from a workpiece 603, and the valve stem 702 is pressed by the trigger 601. At this time, the seal ring 703 on the valve stem 702 will move up to seal the chamber 709, and the high pressure gas 602 in the plenum 103 will be blocked from flowing into the chamber 709 through the first passage 706. The sealing ring 704 is moved up to no longer seal the chamber 709, so that the second and third passages 707, 708 are in communication with each other. Thus, the high pressure gas 602 in the control chamber 501 passes through the control air passage 104, The second and third aisles 707, 708, the passage 901, flow into the upper chamber 902, and then push the plug member 200950941 802 downward to drive the cam member 402 to rotate counterclockwise, however, due to the insurance The movement of the member 401 will be limited by the predetermined distance D (see FIG. ,), and therefore, the cam member 402 will limit the amount of downward movement of the plug member 802, causing the seal ring 803 on the plug member 802 to move to Waiting between the first and second openings 9〇4, 905, thus, the high pressure flowing from the control gas chamber 5〇1 into the upper chamber The gas 602 is discharged to the outside through the first openings 9〇4, the communication space 906, the second openings 9〇5, the lower chambers 9〇3, and the exhaust outlets 9〇7, thereby causing the control. A pressure drop is generated in the gas chamber 5〇1, and the top inner seat 5 is actuated to move upward to open the piston chamber 1〇2, so that the high pressure gas 602 in the gas storage chamber 1〇3 can enter the piston chamber 102. The nailing member 2 is actuated to strike the nail 301 in the nailing portion ιοί, and a metal connecting member 6〇4 is nailed to the s-shaped workpiece 603. In other words, the high-pressure gas 602 in the control chamber 5〇1 needs to flow through the trigger valve 7 in sequence, and the contact valve 8 can be discharged to the outside. Conversely, as shown in Figures 5 and 6, when the first end 403 of the securing member 40 is not positioned within the workpiece 6〇3 (see the predetermined distance D (see Figure ι), and the valve stem When the 702 is pressed by the trigger 601, the sealing ring 703 on the valve stem 702 is moved up to seal the chamber 709, and the still-pressing gas 602 in the sump 103 is blocked through the first passage 706. Continue to flow into the chamber 709. The seal ring 704 will move up to no longer seal the chamber 709, causing the second and third passages 707, 708 to communicate with each other. Thus, the high pressure in the control chamber 5〇1 The gas 602 flows through the control air passage ι4, the second and third aisles 707, 708, and the passage 901, and flows into the upper chamber 902, thereby pushing the plug member 802 downward to drive the cam member 402 to be generated. The counterclockwise rotation 7 200950941 turns, however, since the movement of the safety member 401 will not be limited to the predetermined distance D (see Fig. 1), the cam member 4〇2 does not restrict the plug member 8〇2 The amount of downward movement causes the seal ring 803 on the plug 802 to move below the second opening 905, and blocks the second openings 9〇5 from communicating with the lower chamber 9〇3. Therefore, the high-pressure gas 6〇2 in the control air chamber 501 cannot be discharged to the outside through the exhaust outlet 907, so that the control air chamber 5〇1 cannot generate sufficient pressure drop to actuate the top inner seat 5, Therefore, the nailing member 2 cannot shoot the nail 301 in the nailing portion 101.

[Summary of the Invention] The purpose of not being poor, that is, the pneumatic safety type nailing which can be discharged to the outside world by providing an ei jtc on-off valve, the pneumatic safety type nailing, including a body, a nailing piece, an insurance mechanism, - Top inner seat' and - starter unit. The body has an output portion extending in the axial direction ... a reservoir for storing high pressure gas, and - (iv) an air passage selectively communicating with the reservoir. The nail member is movably mounted in the body along the axial direction. The safety mechanism has a safety member movably mounted to the nail outlet portion along the axial direction. The top inner seat is disposed between the control=” and the present: a control airway between the control unit and the control unit, and the first start unit is disposed on the body, including a first selected air storage chamber. Switching valve 'and-and the first switch, the first switching valve, the two switching valves are selectively in communication with the outside. The second valve is operatively coupled to the safety member and the valve is actuated and the insurance When the movement of the piece relative to the nail removing portion does not exceed the distance of 2, the first opening__ the high-pressure gas supplied from the gas storage chamber' 8 200950941, the high-pressure gas remaining in the first switching valve is discharged through the second switching valve To the outside world, the high-pressure gas in the control gas chamber is discharged to the outside through the control air passage, the first switching valve, and the top inner seat is actuated, when the first switching valve is actuated and the safety member is opposite to the output nail When the moving portion exceeds the safety distance, the high-pressure gas supplied from the air storage chamber flows into the control air chamber through the first switching valve, and the high-pressure gas supplied from the air storage chamber flows into the second through the first switching valve. The switching valve is temporarily stored. [Embodiment] Related to the present invention Other technical contents, features, and effects will be apparent from the following detailed description of the preferred embodiments of the drawings. Referring to Figures 7, 8, and 9, the pneumatic safety type of nailing is A preferred embodiment of the present invention includes: a body 1 (), a nailing member 2, a (four) 30, an insurance mechanism 40, a top inner seat 5, and a starting unit 6A. = 60 includes - the first switch 阙 7 〇, one connected to the first switch 阙

8开关, and a trigger 90 pivoted on the body H). The body 10 has a nail-shaped portion U extending in the axial direction X, a piston chamber/2, a storage chamber U for storing the high-pressure gas 1 (9), and - controlling, communicating with the a-chamber 13 Airway 14. The movement is movably mounted in the axial direction x to the piston of the body 1 至 to η and extends into the ejector * ριι. The magazine 30 is connected to the nail and loaded with a plurality of needles 31. Between the body U) and the insurance mechanism 4. There is provided a safety member 41 movably mounted to the nail portion U along the axial direction, and an elastic member 42. The securing member 41 has a first end portion 4U adjacent to the nail removing portion U, a second end portion 412 adjacent to the second switching valve 8A, and a guiding groove disposed at the second end portion 412. And a pushing portion 414 disposed at the second end 胄 412 and extending toward the second switch, the elastic member 42 is connected between the securing member Μ and the second switch 80. The guide groove 413 has a straight line segment 4 1 5 disposed along the axial direction, and a reclining body * yf 1 r . The straight line slave 415 extends to the inclined portion 416 of the pushed portion 414.

The 亥 ° 顶 内 inner seat 50 is disposed in the body 10 'the top inner seat 50 and the body 10 can be bounded out ― the control air chamber 51 communicating with the control air passage 14 ′ 3 Hai control air chamber 51 β A portion of the high pressure gas 100 is housed. "Hai starter unit 60 is disposed on the body 10 and includes the first and second on-off valves 70, 80 and the trigger 9A. The first on-off valve 70 has a first valve seat 71 disposed on the body 10 adjacent to the trigger 9〇, and an outer piston member 72 movably disposed on the first valve seat 71, movably disposed The inner piston member 73' and the elastic member 74 in the axial direction X abut between the inner and outer piston members 72, 73. In the present embodiment, the first valve seat 71 is composed of a first body 75 and a second seat 76. The inner piston member 73 is movable along the axial direction X between the unfired position (see Figs. 8, 9) and a firing position (see Fig. 12 or Fig. 12 13) along which the outer piston member 72 can be The Χ--the unactuated position (see Figures 8, 9) moves between an active position (see Figures 1〇, 11). The valve seat 71 has a first valve chamber 711 10 200950941 disposed along the axial direction X, a ring groove μ ′ connecting the first valve chamber 711 and the control air passage ΐ 4 — defined in the first and second a venting portion 713 between the sockets of the seat bodies 75, 76, and a first connecting hole 714 communicating with the second switching valve 8 〇, the first valve chamber 711 has a storage tank from the inside and the outside a first section 715 to which the gas chamber U is connected, a second section 716 having a cone-shaped head, a third section m connected to the section 716, and a third section, The fourth connection portion 714 is connected to the fourth section 718. The annular groove is interposed between the first and second sections 715 and 716, and the exhausting portion 713 is connected to the second section 716 to communicate with the outside. The outer piston member 72 is disposed on the first valve block 711. The outer piston member 72 has an outer plug body 721 and a first outer seal ring 722 disposed on the outer plug body 721. The second outer sealing ring 723 of the body 721 and a third outer sealing ring 724 disposed on the outer plug body 721. The outer plug body 721 has a large diameter portion 725 that is sleeved with the third portion 717, and a small diameter portion B extending from the large diameter portion 725 to the first portion 715, defined by the large and small servants. An annular shoulder 727 between the portions 725, 726 and an axial passage 728 disposed along the axial direction X and communicating with the plenum 14 and the third portion 717. The first outer seal ring 722 is disposed on the small end portion 726 opposite to the end of the ring 727. The second outer seal ring 723 is disposed on the small diameter portion 726 and abuts the annular shoulder portion 727. The third outer seal ring 724 is disposed on the large diameter portion 725. The inner piston member 73 is disposed on the first valve chamber 711 and the axial passage, and the inner piston member 73 has an inner plug body 731. a first inner seal ring 732 disposed on the inner plug body 73i, a second inner seal ring 733 disposed on the inner plug body 731, and a third inner portion disposed on the inner plug body 731. a sealing ring 734. The inner plug body 731 has a large diameter portion 735 that is sleeved with the fourth portion 718 and extends outwardly to abut the trigger 90, and extends from the large diameter portion 735 to the axial passage 728. a small diameter portion 736, and a ring shoulder portion 73*7 defined between the large and small diameter portions 735, 736, wherein the first, second and third inner seal rings 732, 733, 734 are spaced apart from each other The large diameter portion 735 is on.

The second on-off valve 80 has a second valve seat 81 disposed on the body 10, a contact piston member 82 movably disposed on the second valve seat 81, and two spacers disposed on the second valve seat 81. The upper ear piece 83 and a guide pin 84 disposed between the ear pieces 83 and slidingly connected to the guiding groove 413. The second second valve seat 81 has a second valve chamber 811 disposed along the axial direction X, a second connecting hole 812 communicating with the second valve chamber 811 and the first connecting hole 714, and a second connecting hole 812 The valve chamber 811 and the outside notch 813 extend into the notch 813 of the pushed portion 414 of the safety member 41. Up to 811 having a first and a second section 814 from the inside, a second section 815 having an inner diameter A in the first section 814, and a third inner diameter being smaller than the second section 815 Section 816, and - connects the third section 816 with the fourth section 817 of the gap 813. The contact piston member 82 is disposed on the second valve chamber 811 and is connectable with the pushed portion 414 of the safety member 41. The contact piston member 82 can be in the -X position along the axial direction (see FIG. 8, 9), a second position map 1 〇, 11) and a third position (see Figures 12, 13) move. The contact piston member 82 has a plug body 821 which is placed in the anti-sealing ring 822 of the plug body. The plug body 82 has an inner end portion 8 illusion, extending from 12 200950941 °H and 邛823 to the fourth portion of the outer end portion 824 of Shishi Insan, such as 8.1, one set outside the 螭a pushing portion 825 of the portion 824, and an exhaust passage 826 communicating with the outside. The 5 岔 sealing ring 822 is disposed at θ M , , c ^ x inner grain opening P 823, and the pushing portion 825 疋 extends to the notch 813 . Therefore, as shown in FIGS. 8 and 9, when the user does not press the trigger 90, the inner piston member 73 is in the unfired position, and the first 11 and the workpiece of the safety member 41 are An insurance distance L may be defined between 200, at which time the first outer shot of the outer piston member 72 of the outer piston member 72 does not seal the first portion 715 of the first valve chamber 711. The air plenum 13 is connected to the first section 715, the second outer seal ring 723 seals the second section 716, and the ring groove 712 is blocked from communicating with the second section 716. The third outer seal ring 724 seals the third section 717, blocking the second section 716 from communicating with the third section η?, while the inner piston member 73#-enda, the seal 732 does not seal the axial passage 728, So that the third section 717 is communicated to the channel 728, the second inner sealing ring 733 seals the fourth section 718, blocking the fourth section 718 from communicating with the second connecting hole 714, the second inner seal The ring 734 seals the fourth section 718, blocking the fourth section 718 from communicating with the outside, such that the high pressure gas 100 in the plenum 13 can pass between the inner and outer piston members 73, 72 through the shaft. Direction channel 728 flows into the third section 717 of the first valve chamber 711 to maintain the outer piston member 72 in the unactuated position 'to allow the high pressure gas 100 in the plenum 13 to pass through the first valve chamber 711 The first section 715, the annular groove 712, the control air passage 14 (see FIG. 7) flow into the control air chamber 5-1, forcing the top inner seat 5 to close the piston chamber 12; in the process, due to the inner piston The second inner seal ring 733 of the piece 73 simultaneously blocks the communication between the first and second on-off valves 70, 80 13 200950941, and the high-pressure gas 100 does not flow into the second on-off valve 8〇, therefore, the The contact piston member 82 is held in the first position. At this time, the seal ring 822 is a first section 8丨4 sealing the second valve chamber 8丨丨, and the second connection hole 812 is blocked. A section 8U communicates with the exhaust passage 826, and the pushing portion 825 abuts against the pushed portion 414 of the safety member 41. The guide pin 84 is located in the straight section 415 of the guide groove 413. ❹ ❹ As shown in FIGS. 10 and 11, when the user presses the trigger 9 to move the inner piston member 73 to the firing position, and the first end portion 4 of the safety member 41 is limited to the s-shaped workpiece 200, The first inner seal ring 732 of the inner piston member seals the axial passage 728 when the nail exit portion u moves beyond the insurance distance L (see FIG. 8), and blocks the axial passage 728 from communicating with the first portion. a third section 717 of the valve chamber 711, the second inner seal ring 733 does not seal the fourth section 718, the fourth section 718 is connected to the first connection hole 714, and the third inner seal ring 734 is still The fourth section 718 is sealed to block the fourth section 718 from communicating with the outside world, such that the 'fourth ring seal 732 blocks the high pressure gas 1 in the air reservoir 13 through the axial passage. 728 flows into the third section 717, causing the outer piston member 72 to move down to the actuating position, during which the second inner seal ring 733 of the inner piston member 73 no longer blocks the fourth section claw Connecting the first connection hole 714 and connecting the first and second switch readings % and 80 to each other, the high pressure gas 100 temporarily stored in the third segment π is The fourth section 718, the first connecting hole 714, and the second connecting hole 812 flow into the second valve chamber 811, and the end portion of the (4) (4) member 41 __ is restricted by the workpiece, and therefore flows in. The high-pressure gas in the second chamber 811 can only drive the contact piston member 82 to move to the 14 200950941-position 'At this time, the pushing portion 825 still abuts the moving portion (4) of the safety member 4' The pin 84 is still located in the straight section 415 of the (four) 413, and the sealing ring 822 is a second section that does not seal the second compartment, so that the second connecting hole 812 is called by the first and second sections. 815 is connected to the exhaust passage 826, so that the high-pressure gas 1〇〇 flowing into the second valve chamber 811 can be discharged from the exhaust passage 826 to the outside. In addition, when the outer piston member 72 is moved down to the actuating position, the first outer seal ring 722 of the outer movable plug 72 seals the first section 715 of the first valve chamber to block the air reservoir. 13 communicating with the first section 715, the second outer seal «723 does not seal the second section 716' such that the ring 12 communicates with the first section 716, and the third outer seal ring 724 is still sealed The third section 717 'blocks the second section 716 to communicate with the third section 717, such that the first outer sealing ring 722 of the outer living member 72 blocks the pressure in the air reservoir 13 The gas (10) continues to flow into the control plenum 51 through the first section 715, the annular groove 712, the control air passage 14 (see FIG. 7), and the control plenum high pressure gas ΠΚ) can pass through the control air passage 14 ( See Fig. 7), = i X exhaust crp 7 1 3 is discharged to the outside, causing a pressure drop in the control air chamber 51, and actuating the top inner seat 50 to move upward to open the piston chamber 12, so that The high pressure gas 100 in the gas storage 13 can enter the piston chamber 12, and the actuating nail member 20 strikes the nail 31 in the nailing portion 11, thereby nailing the _ to the connector 300 The workpiece 2〇 On. In other words, the same pressure gas 1 in the control gas to 51 only needs to flow through the first switching valve 70 to be discharged to the outside. As shown in Figures 12 and 13, 'When the user presses the trigger 90, the inner portion 15 200950941 plug 73 is moved to the firing position, and the first end of the safety member 4i is not limited to the workpiece 200 (see ® 8), while the movement of the nailing portion 11 relative to the safety distance L (see FIG. 8), the first inner seal 732 of the inner piston member 73 does not seal the axial passage 728, such that the axial passage 728 Connecting the third third section 717', the second inner seal ring 733 does not seal the fourth section 718' such that the fourth section 718 communicates with the first connection hole 714, and the third inner seal ring 734 remains Sealing the fourth section 718, blocking the fourth section 718 from communicating with the outside, such that the high pressure gas 1〇〇 in the plenum 13 can pass between the inner and outer piston members 73, 72. The axial passage 728 flows into the third section 717 to maintain the outer piston member 72 in the unactuated position, during which the second inner seal ring 733 of the inner piston member 73 no longer blocks the first The four sections 718 are connected to the first connecting hole 714, so that the first and second switching valves 7A and 8G are connected to each other, and the flow is high in the third section 717. The gas 100 can flow into the second valve chamber 811 through the fourth portion 718, the first connecting hole 714, and the second connecting hole 812. Since the first end portion 411 of the securing member 41 is not restricted, Therefore, the high-pressure gas 100 flowing into the second valve chamber 8U can move the contact piston member 82 to the third position. At this time, the pushed portion 825 is the pushed portion 4 detaching the safety member 4 4, the guide pin 84 is located in the inclined section 416 of the guiding groove 413, and the sealing ring 822 is a third area = 816 sealing the second valve chamber 811, blocking the second connecting hole 812 through the first The second and third sections 814' 815, 816 are connected to the exhaust passage 826. Thus, the high pressure gas 100 flowing into the second valve chamber 8 is not discharged from the exhaust passage 826 to the outside. In addition, when the outer piston member 72 is held in the unactuated position, the outer 16 200950941

The first outer seal ring 722' of the piston member 72$ seals the first section 715' of the first valve 胄7, so that the sump 13 communicates with the first section 715, and the second yoke ring 723 seals s The second section 7 i 6 of the second section blocks the ring groove 7 i 2 to communicate with the brother-section 716 'the third outer sealing ring 724 still seals the third section 717, blocking the second section 716 is connected to the third section 717, and the pressurized gas 1〇〇 in the gas storage 13 can continue to flow into the first section 715, the annular groove 712, and the control air passage 14 (see FIG. 7). The air chamber is controlled to force the top to close the piston chamber 12 such that the south pressure gas 100 in the air reservoir 13 cannot enter the piston chamber 12 to actuate the nail member. It should be noted that, in this state, since the guide pin 84 is embedded in the inclined section 416 of the guide groove 413 of the safety member, if the first end portion 411 of the safety member 41 is accidentally pushed at this time The pushed portion 414 of the safety member 41 is also unable to move upward, and the contact piston member 82 is still held in the third position ' without being accidentally moved to the second position, thereby effectively preventing the nail member from being effectively prevented. 20 hits the nail 31 by mistake. In summary, the pneumatic safety type nailing gun of the present invention can directly discharge the high-pressure gas to the outside only through the first-on-off valve, and can effectively prevent the nail from being accidentally fired, so that the purpose of the invention can be achieved. However, the above is only the preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent change and repair made by the present invention in the scope of the invention and the description of the invention. Jin is still within the scope of the patent of the present invention. 17 200950941 [Simplified illustration of the drawings] Fig. 1 is a schematic cross-sectional view of a conventional pneumatic safety type of injection. Fig. 2 is a partially enlarged schematic view of Fig. i; Fig. 3 is a view similar to Fig. 1, Fig. 4 is a partial enlarged view of Fig. 3; Fig. 5 is a visual smashing attack similar to Fig. 5; said that the nail can not be completed. Figure 6 is Fig. 5 FIG. 7 is a partial cross-sectional view of the pneumatic safety type of nailing of the present invention; FIG. 8 is a schematic cross-sectional view of the preferred embodiment, illustrating the preferred embodiment The inner piston member of the cymbal switch is in an unfired position, the first-second plug member is in the -inactive position, and the first-on-off valve of the embodiment of the money is in contact with the piston member in a first position; 9 is a partial enlarged view of FIG. 8; FIG. 1A - similar to the view of FIG. 8, illustrating the inner plug member of the first on-off valve in the - firing position, the outer piston member of the first switching valve is in a Actuation position, the contact piston member of the second switching valve is in a second position; FIG. 11 is 10 is a partial enlarged view; FIG. 12 is a view similar to FIG. 1A, illustrating the inner 'tongue member of the first on-off valve in the firing position' of the outer piston member of the first switching valve in the untwisted position 5 Hai's second switching valve contact piston member is in a third position; and FIG. 13 is a partial enlarged view of FIG. 18 200950941

[Description of main component symbols] 1 ... ... housing 701 ... ... body 101 ... nailing portion 702 ... ... ... valve stem 102 · ... ... ... piston chamber 703 ... ... ... seal 103 . .. ...storage chamber 704··....seal 104··....control air passage 705...seal 2...snap member 706...first aisle 3...pin 707·.. ... Second aisle 301 ... nail 708 ·.. ... third aisle 4 ... ... insurance mechanism 709 ... ... ... chamber 401 ... ... safety member 8 ... ... contact valve 402 · ... ... cam 801... body 403 ... first end 802 ... ... ... plug 404 ... ... ... second end 803 ... ... seal 405 ... push end 804 · .... compression spring 406 · · ....Driver 805····Cam surface 5.........Top inner seat 901··....Channel 501... Control air chamber 902·.....Upper chamber 6...Actuator 903···...lower chamber 601...trigger 904···...first opening 602···...high pressure gas 905·.....second opening 603...workpiece 906···...connecting space 604··· ...metal connector 907·.. ... Exhaust outlet 7...... ...trigger valve X... ...axial 19 200950941

D... ...predetermined distance 70••...first switching valve 100···...high pressure gas 71·····...the valve seat 200···...the workpiece 711...the valve to 300···...metal Connector 712...ring groove 10 ·····body 713...exhaust part 11··...putting part 714···...first connecting hole 12···...piston chamber 715... A section 13 . . . . ... a gas storage chamber 716 ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... Section 30 ·····Nailer 72·····...outer piston member 31·····nail 721...outer plug body 40···....insurance mechanism 722···...first outer seal Ring 41 ···· ...insurance 723···...the second outer seal ring 411...the first end portion 724·.....the third outer seal ring 412···the second end portion 725...the large diameter 413··· ... guide groove 726 ... ... small diameter portion 414 ... ... ... is pushed portion 727 ... ... ... ring shoulder portion 415 ... ... straight line segment 728 ... ... ... axial channel 416 ... ... ... inclined section 73••... inner piston member 42 · ··...elastic element 731...inner body 50·...top inner seat 732···...first inner seal ring 51····...control air chamber 733...the second inner seal ring 60···· Starting unit 734·.....third inner seal ring 20 large diameter portion 90·····trigger small diameter portion X·.··· ---- axial bad shoulder L ·.··. Insurance distance elastic member first seat body second seat body second switch valve second valve seat second valve chamber second connection hole notch first section second section third section fourth section contact piston member plug body Sealing ring inner end outer end pushing part exhausting channel ear guide pin 21

Claims (1)

200950941 X. Patent application scope: 1. A pneumatic safety nail gun comprising: a body having a nailing portion extending along an axial direction, a gas storage chamber for storing a gas, and a selectively a control air passage communicating with the air reservoir; a hammer member ' is movably mounted in the body along the axial direction; and a safety mechanism having a movably mounted shaft portion along the axial direction The top inner seat is disposed in the body, and the control inner air chamber is defined between the top inner seat and the main body; and a starting unit is disposed on the body a first switching valve, and a second switching valve connected to the first switching valve, the first switching valve has a first valve seat sliding to the body, and a first valve seat movably disposed on the first valve seat An outer piston member, and an inner soil member movably disposed on the first valve seat, the tongue/sand plug member is movable along the axial direction between an unfired position and a firing position, and the outer piston member is Moving between an unactuated position and an actuating position along the axial direction The second on-off valve has a second valve seat disposed on the body, and a contact piston member movably disposed on the second valve seat, the contact piston member being operatively coupled to the safety member #, The contact movable base member is movable between the first position and the second position along the axial direction, when the inner piston member is in the fired position and the safety member is moved relative to the needle portion: no more than an insurance distance When the inner piston member blocks the high-pressure gas in the air chamber, the inner and outer piston members flow into the first switching valve, and the outer piston member moves to the (four) moving position, and blocks the air storage chamber. The high-pressure gas flows into the control air chamber through the first opening and closing valve of the 22 200950941, the control air passage, and the high gas in the control air chamber is discharged to the outside through the first-on-off valve, and the top inner seat is actuated, and The inner piston member no longer blocks the first and second switch ports, and the high pressure gas originally flowing from the air storage chamber to the first switching valve is discharged to the outside through the second piston valve, and drives the contact piston member from the The first position moves to the second position. 2. The pneumatic safety type nailing according to the scope of the patent application, wherein, when the inner piston member is in the unfired position, the high pressure gas in the air reservoir is between the inner and outer piston members. Flowing into the first switching valve, the outer piston member is maintained in the unactuated position, so that high pressure gas in the air chamber can flow into the control air chamber through the first switching valve and the control air passage, and the inner piston member is blocked The communication between the first and second switch jaws is broken, so that the contact piston member is maintained at the first position. 3. The pneumatic safety type nailing according to claim 2, wherein the 忒 contact piston member is movable between the first and second positions and a third position along the axial direction, when the inner When the piston member moves in the firing position and the safety member moves beyond the safety distance with respect to the nailing portion, the high pressure gas in the air chamber flows from the inner and outer piston members into the first switching valve, and the outer piston member Holding and holding in the unactuated position, the high gas in the air storage chamber can pass through (4) an on-off valve, the control air passage flows into the control air chamber, and the inner piston member Ζ blocks the first and second The switching valve 'moves from the plenum through the first switching valve < the high pressure gas entering the second switching valve to move the contact piston member from the first position to the third position, thereby blocking the air chamber High pressure gas is discharged from the first switching valve. The air-operated nail gun of claim 3, wherein the first valve seat of the first switching valve has a first valve chamber disposed along the axial direction, and the first valve chamber is connected to the first valve chamber. a valve chamber and the annular groove of the control air passage, an exhaust portion communicating with the first valve chamber and the outside, and a first connecting hole communicating with the second switching valve. The first valve chamber has an inner and outer chamber a first section connected to the plenum, a second section, a third section, and a fourth section connected to the first connecting hole, the ring groove is between the first, Between the two sections, the exhaust portion is in communication with the second section, the outer piston member is disposed on the first valve chamber, the outer piston member has an outer plug body, and is disposed on the outer plug body a first outer sealing ring, a second outer sealing ring disposed on the outer plug body, and And a third outer sealing ring disposed on the outer plug body, the first outer sealing ring does not seal the first section when the inner piston member is in the unfired position, so that the air storage chamber communicates with the first a section, the second 'blocking the ring groove communicating with the second section, the first outer sealing ring sealing the second section 24 200950941 The second section of the broken δ hai is connected to the third section. 5. The pneumatic safety nail gun of claim 4, wherein the outer plug body of the outer piston member has a large diameter portion that is sleeved with the third portion. Extending to the small diameter portion of the first section, and a ring shoulder defined between the large and small diameter portions, the first outer sealing ring is disposed on an end of the small side opposite to the annular shoulder The second outer seal ring is disposed on the small diameter portion and abuts against the ring shoulder portion, and the third outer seal ring is disposed on the large diameter portion. The pneumatically-safe nailing gun according to the fourth aspect of the invention, wherein the outer plug body of the piston member has an axial passage disposed along the axial direction, the axial passage communicating with the gas storage And the third segment, the inner piston member is disposed on the first valve chamber and the axial passage, and the inner piston member has a first inner sealing ring disposed on the inner plug body a second inner seal ring disposed on the inner plug body, and a third inner seal disposed on the inner plug body, the first inner seal ring when the inner piston member is in the unfired position a six-turn axial passage communicating the axial passage to the third section, the t-th inner seal ring sealing the fourth section, blocking the fourth section from communicating with the first-the third inner seal ring seal The fourth section blocks the fourth zone boundary, and the first inner seal ring inner sealing ring is when the inner piston member is in the fired position and the safety member is opposite to the safe distance Unsealing the Γ, connecting the third section, the second four-zone slave, connecting the fourth section to the first seal ring to seal the first Segment, block the fourth section ", when the core plug in position and (iv) hair County risk with respect to the staple 25,200,950,941 the moving portion and the axial passage. When the insurance distance is exceeded, the first inner seal ring is not sealed, so that the axial passage communicates with the third section, the second inner seal % is not sealed 誃®, the second=fourth section makes the first The four sections are connected to the first connecting hole outside and the inner sealing ring seals the fourth section, and the fourth section is blocked from being connected. According to the pneumatic insurance type nailing mentioned in claim 6 of the patent scope, wherein ' The inner plug P, a / has a large diameter portion that is sleeved with the far fourth portion, a small portion that extends from the β to the axial passage, and a % shoulder between the large and small diameters The first, second, and third inner seal rings are spaced apart from each other on the large diameter portion. 8 'Pneumatically-safe nailing according to item 4 of the patent application scope, wherein the first switching valve further has an elastic member abutting between the inner and outer plug bodies along the axial direction. 9. The pneumatic safety type nailing according to the third aspect of the invention, wherein the second valve seat of the first switching valve has a second valve chamber disposed along the axial direction, and a second communication chamber a second connecting hole of the valve chamber and the first connecting hole, the contact piston member is disposed at the second valve chamber, and the second valve chamber has a first section connected to the second connecting hole from the inside and the outside, a second section having an inner diameter larger than the first section, and a third section, the contact piston member has a plug body, and a sealing ring disposed on the plug body, the plug body having an outer Connected exhaust passage 'When the contact piston member is in the first position, the seal ring seals the first section, blocking the second connection hole from communicating with the exhaust passage via the first section' When the piston member is in the second position, the sealing ring does not seal the second portion ′ such that the second connecting hole communicates with the exhaust passage through the first and second regions 26 200950941 dense section when the contact piston member In the third position, the seal ring seals the third section, blocking the second connection hole through the first: -, three The section communicates with the exhaust passage. 10. The pneumatic safety type nailing according to claim 9, wherein the second switching valve further has a guide pin disposed on the second valve seat, and the second wide chamber has a more a fourth section in which the third section communicates, the second compartment of the cough further has a notch communicating with the fourth section, and the plug body contacting the live material has an inner end portion, an outer end portion, and a a pushing portion disposed at the outer end portion, the sealing ring is disposed at the inner end portion, the outer end portion extends to the fourth portion, the pushing portion extends to the notch, and the securing mechanism has a elasticity An element having a first end adjacent to the output portion, a second end adjacent to the second switching valve, and a guide disposed at the second end and slidingly coupled to the guide pin a groove, and a pushed portion disposed at the second end=and: extending to the notch, the elastic member is connected between the safety member and the second switching valve, when the contact piston member is at the first In the two positions, the pushing portion is in contact with the pushed portion, and when the contact piston member is in the second position, the pushed portion is Disengage the pusher. The pneumatic safety type nailing according to claim 10, wherein the guide groove has a straight line section disposed along the axial direction, and a sloped section extending from the straight line section to the pushed portion. When the contact piston member is in the first and second positions, the guide pin is located in the straight line segment, and when the contact piston member is in the third position, the guide pin is located in the inclined portion. 2. A pneumatically safe type of nail-carrying 'comprising: the body' has a nailing portion extending along an axial direction, a storage of 27 200950941 "gas bedding gas to" and _ selectively connected to the gas storage chamber Controlling the airway; the nailing member 'is movably mounted in the body along the axial direction; - the securing mechanism having a safety member movably mounted to the nailing portion along the axial direction; And disposed in the body between the top inner seat and the body: defining a control air chamber in communication with the control air passage; and a starting unit, the weir is disposed on the body, including a gas storage selectively The first reading of the room is connected to the first reading valve, and a switching valve connected to the first switching valve is selectively connected to the outside. The second one closing valve is operable. The ground is connected to the safety member, and when the first switch is actuated, the safety member is moved relative to the nail removing portion by no more than a safety distance, and the first switch blocks the high-pressure gas supplied from the air storage chamber. The high pressure gas remaining in the first switching valve is discharged through the second switch To the outside, the high-pressure gas in the control gas chamber is discharged to the top chamber via the control air passage and the first switch to actuate the top inner seat 'when the first-on-off valve is actuated and the insurance cow is opposite to the When the P moves beyond the insurance distance, the air supply chamber supplies • 'high pressure gas flows through the first switch, and the control air passage flows into the control air chamber. · The high pressure gas supplied from the air storage chamber flows through the first switch valve The second on-off valve is temporarily stored. 13. According to the patented ribbed flute, the pneumatic safety type nailing mentioned in the item, wherein the first first on-off valve has a first valve seat disposed on the body, An outer piston member movably disposed on the first-reading seat, and an inner piston member movably disposed on the first sley, the inner piston member being axially slidable along the axial direction 28 200950941 at a non-fired position Launching the outer piston member can be...° - moving between an unactuated position and an actuating position, the first on-off valve having a second valve seat disposed on the body, and a contact piston member disposed on the second valve seat, the contact piston member being detachably coupled to the safety member, the contact piston member being axially at a first position: a second position and - Moving between three positions, when the inner piston member is in the unfired position, the high pressure gas of the air reservoir (4) flows from the inner and outer 'tongue plugs into the first on-off valve, and the outer piston member remains unactuated a position such that the high pressure gas in the gas storage chamber can flow into the control air chamber through the first switching valve and the control air passage, and the inner piston member blocks the communication between the first and second switching valves, so that the contact piston member Maintaining in the first position, when the inner piston member is in the firing position and the safety member is moved relative to the nail removing portion by no more than the insurance distance, the inner piston member blocks the inflow of high pressure gas into the air a first switching valve, the outer piston member moves to the actuating position, and the high-pressure gas in the air-storage chamber is blocked from flowing into the control air chamber and the high-pressure gas in the control air chamber is discharged to the outside through the first switching valve. Actuating the top inner seat, and The inner piston member no longer blocks the first and second switching valves, and the surface pressure gas flowing from the sump into the first switching valve is discharged to the outside through the second piston valve, and the contact piston member is moved to the a second position, when the inner piston member is in the fired position and the safety member moves relative to the nail output portion beyond the insurance distance, high pressure gas in the air reservoir flows from the inner and outer piston members to the first An on-off valve, the outer piston member is maintained in the unactuated position, so that the high-pressure gas in the air-storage chamber can flow into the control air passage through the first on-off valve and the control air passage, and the inner piston member is no longer Blocking the first and second switches, the high-pressure gas flowing into the second switching valve through the first switching valve drives the contact piston member to move to the third position, and blocks the high-pressure gas in the air storage chamber. Discharged from the second switch.气动 · 14· The pneumatic safety type nailing according to claim 13 of the patent application scope, wherein the first valve seat of the first switching valve has a first interval to the axial direction, - the valve chamber is connected to the ring of the control air passage, the first valve is connected to the exhaust portion of the outside valve, and the second connecting hole communicating with the second switching valve, and the fourth valve chamber is provided from the inside to the outside - a first zone connected to the sump, a second section, a third section, and a fourth section connected to the first connection hole, the ring groove being between the first and second Between the sections, the excavation 4疋 is in communication with the second section, the outer piston member is disposed in the first valve chamber, the outer piston member has a right _ hail having an outer plug body, and a a first outer seal ring on the outer plug body, a second outer seal ring disposed on the outer plug body, and a third outer seal ring disposed on the outer plug body, wherein the inner piston member is: When the position is: the first outer seal ring does not seal the first section, so that: the milk: communicates with the first section, the second outer seal ring seals the second zone Blocking the ring groove to communicate with the second section, the third outer seal ring sealing section third section, blocking the second section to communicate with the third section, when the guest member is in the firing position and the insurance Moving relative to the nail removing portion exceeds: when the distance is dangerous, the first outer sealing ring seals the first portion, and the air storage chamber communicates with the first portion, and the second outer sealing ring does not seal the first portion Connecting the ring groove to the second section, the third outer seal ring dense material = section, blocking the second section to communicate with the third section, when the inner live U 30 200950941 the fired position and the insurance The first outer sealing ring is not sealed relative to the first outer ring, and the second outer sealing ring is sealed to connect the gas storage ring groove to the second portion. The third outer section 'blocks the blocking the second section from communicating with the third section. The third section is enclosed. 15 According to the scope of the patent application: in the gas: the outer plug body of the outer piston member has two "butyl, butyl layer," Ο 部, - from the big The diameter portion extends to the small diameter I-symple of the first segment, and the annular shoulder between the large and small diameter portions, the first and small diameter portions are opposite to the annular shoulder portion - On the end, (4) the ring is placed on the small-diameter portion and is placed on the small-diameter portion against the large-diameter portion. - The second outer seal ring is set 16. The pneumatic safety type nailing according to claim 14, wherein the outer plug body of the outer piston member has an axial passage disposed along the axial direction, and the axial passage communicates with the air storage chamber. And the third section, the inner piston member is disposed on the first valve chamber and the south surface illuminating channel, the inner piston member has an inner plug body, and is disposed on the inner plug body. An inner seal ring, a second inner seal ring disposed on the inner plug body, and a third inner seal ring disposed on the inner plug body when the inner piston member is at In the unfired position, the first inner sealing garment does not reach the "the axial passage" such that the axial passage communicates with the third section, and the second inner seal ring seals the fourth section, blocking the first The fourth section communicates with the first connecting hole, the second inner sealing ring seals the fourth section, and the fourth zone 4 is blocked from communicating with the outside world. The inner piston member is in the firing position and the safety member is opposite to the outer portion. When the nail portion moves no more than the insurance distance, the first inner seal ring 31 200950941 seals the axial passage' to block the axial passage from communicating with the third portion, the first inner seal ring does not seal the fourth portion Causing the fourth section to communicate with the first connecting hole, the third inner sealing ring sealing the fourth section, blocking the fourth section from communicating with the outside, when the inner piston member is in the firing position and the safety piece The first inner seal ring does not seal the axial passage when the nail exit portion moves beyond the insurance distance, so that the axial passage communicates with the third portion, and the second inner seal ring does not seal the fourth portion a section that connects the fourth section to the first connection hole 'the third inner seal ring Sealing the fourth section to block the fourth section from being connected to the outside. 17. The pneumatic safety type nailing according to claim 16 of the patent application, wherein the inner body has one more a large-diameter portion of the four-segment sleeve, a small-diameter portion extending from the large-diameter portion to the axial passage, and a ring shoulder defined between the large and small-diameter portions, the first, second, The three inner seal rings are spaced apart from each other on the side hollow portion. 1 8. The pneumatic safety nail gun according to claim 14 of the patent application, wherein the first switch valve has a further The elastic member is axially abutted between the inner and outer plug bodies. 19. The pneumatic safety type nailing according to claim 13 wherein the second valve seat of the second switching valve has a a second valve chamber disposed along the axial direction and a second connecting hole communicating with the second valve chamber and the first connecting hole. The contact piston member is disposed in the second valve chamber. The second valve chamber is a first section connected to the second connecting hole, a second section having an inner diameter larger than the first section, and a first inner section a third section 'the contact piston member has a plug body, and a seal ring disposed on the plug body, the plug body having a row liit ' communicating with the outside of 32 200950941 when the contact piston member is in the first position The sealing ring seals the first section, blocking the second connecting hole to communicate with the exhaust passage via the first section, and when the contact piston member is in the second position, the sealing ring is not sealed a second section, the second connecting hole is connected to the exhaust passage via the first: two sections, and when the contact piston member is in the third position, the loop is sealing the third section, blocking The second connecting hole communicates with the exhaust passage via the first, second and third sections. 20. The pneumatic safety type of injection according to claim 19, wherein the second on-off valve further has a guide pin disposed on the second valve seat, the second valve chamber further having - a fourth section communicating with the third section, the second valve seat further has a notch communicating with the fourth section, the plug body of the contact piston member having an inner end portion and an outer end portion, and a pushing portion disposed at the outer end portion, the sealing ring is disposed at the inner end portion, and the outer end portion extends to the fourth fourth portion, the pushing portion extends to the notch, and the insurance mechanism further has a An elastic member having a first end portion adjacent to the nail removing portion, a second end portion adjacent to the second switching valve, a second end portion disposed at the second end portion and slidingly coupled to the guide pin a guiding groove, and a pushed portion disposed at the second end portion and extending to the notch, the elastic member is connected between the safety partner and the second switching valve, when the contact piston member is at the first In the two positions, the pushing portion is in contact with the pushed portion, and when the contact piston member is in the second position The urged portion is disengaged from the pushing portion. 2 h according to the pneumatic insurance type nailing according to the second aspect of the patent application, wherein the guide groove has a straight line segment disposed along the axial direction, and a slope extending from the straight line slave to the pushed portion And, when the contact piston member is in the first position 33 200950941, the guide pin is located in the straight line segment, and the guide pin is located in the inclined portion when the contact piston member is in the third position. 34