TWI393614B - Pneumatic nail gun mounted on the air compressor - Google Patents

Description

Pneumatic nail gun striking rod reset driving device with internal air compressor

The invention provides a nail rod reset driving device for a pneumatic nail gun, relating to a pneumatic nail gun carrying an air compressor therein, in particular to a two-valve member capable of controlling the opening and closing timing of an air compressor, and a sensible A valve member that measures the movement of the safety slider to regulate the high pressure air that drives the nail rod to reset.

The pneumatic nail gun is a hand tool that drives the nailing operation with high-pressure air as a power source. Generally speaking, the gun body is provided with a pushable safety slide bar for controlling the nailing operation sequence, and the gun body is provided with a plurality of main air chambers, a cylinder and a sliding group which can continuously collect high pressure air to maintain a constant pressure. One of the pistons in the cylinder, a striking rod integrally connected to one of the bottom ends of the piston, a trigger valve for driving the striking rod, and the like. The piston system divides the cylinder into a top cylinder chamber and an underlying cylinder chamber.

The user can push the safety slider on the object to be nailed and press the trigger valve to switch the high-pressure air circuit in the gun body, so that high-pressure air enters the top cylinder chamber, driving the piston and the blow connected to the bottom end thereof. The nail is moved under the nail bar. The user then releases the safety slider and the trigger valve to switch the high pressure air circuit in the gun body, vent high pressure air in the top cylinder chamber, and allow high pressure air to enter the bottom cylinder chamber to drive the piston and connect to the piston The piston rod at the bottom is moved up and reset.

In the prior art in which the high-pressure air is collected in the main air chamber, for example, a pneumatic nail gun in which an air compressor (hereinafter referred to as an air compressor) is disposed in the grip is disclosed in the U.S. Patent No. 7,225,959. The air compressor is used to directly supply high pressure air to a plurality of main air chambers in the nail gun, thereby driving the nail gun to be driven; however, since the nail gun of the technology is not connected to the high pressure air line, when the nail gun is static When set, the user can easily misunderstand that there is no high-pressure air in the main air chamber of the nail gun (just like the conventional nail gun that needs an external air compressor, when the high-pressure pipeline is separated and stood still), but it is actually possible to collect High-pressure air causes the user to use the nail gun again, which is easy to cause misjudgment and endangers safety, so there is a need for improvement.

The object of the present invention is to provide a pneumatic nail gun striking rod reset driving device for an internal air compressor, in particular to overcome the above prior art, the nail gun is placed after the nail is nailed (ie, after the nail rod is reset) When nailing a gun, it is safe to avoid the danger of being able to pinch the nail due to the possible accumulation of high-pressure air in the gun body.

In order to achieve the above object, the pneumatic nail gun striking rod reset driving device of the air compressor of the present invention comprises a main air chamber, an underlying cylinder chamber, a striking rod, an air compressor, a safety slider and a gun valve body of the trigger valve, comprising: a main gas path connected between the main air chamber and the bottom cylinder chamber; a first valve member slidingly disposed on the main gas path, comprising a high-pressure air driven An inner end portion, and an outer end portion that receives the safety slider to push; an activation switch capable of starting the air compressor, being activated by the movement of the safety slider; and a power-off switch capable of turning off the air compressor; and The auxiliary air passage is connected to the main air chamber and extends to the near side of the power-off switch, and a sub-position valve is slid on the auxiliary air passage. Wherein, the secondary valve includes a second valve member and a third valve member, the second valve member is slidably disposed on the auxiliary air passage, and has a blocking portion driven by high-pressure air, and the third valve member is slidably disposed The auxiliary air passage between the second valve member and the power-off switch includes a gas-blocking portion that is driven by high-pressure air, and a pushing portion that pushes the power-off switch.

The specific technical means of the present invention includes: the main air passage and the auxiliary air passage are cross-connected, and the first valve member is slidably disposed at an intersection of the main air passage and the auxiliary air passage, so that the first valve member The bottom valve chamber and the auxiliary air passage are connected during the movement from the closed valve state to the open valve state; the second valve member is slidably disposed on the auxiliary air passage between the main air chamber and the first valve member, the third valve The sliding member is disposed on the auxiliary air passage between the first valve member and the power-off switch.

According to this, when the user pushes the safety slider up and down before the nailing, the outer end portion is pushed by the safety slider to drive the first valve member to close the valve, and the main air passage is blocked to the bottom cylinder. The power-on switch is pushed up by the safety slider, and the air compressor is started to supply high-pressure air to the main air chamber to press the trigger valve to drive the nail to move the nail down; In a state in which the main air chamber accumulates high-pressure air, the blocking portion is driven by the high-pressure air in the auxiliary air passage to open the second valve member of the sub-position valve; when the high-pressure air drives the second valve member to open the valve The choke portion of the sub-position valve is driven by the high-pressure air in the auxiliary air passage, so that the sub-position valve moves its push portion to push the power-off switch to close the air compressor; the user releases the safety after the nail is pressed When the slider is moved down and reset, the inner end portion is driven by the high-pressure air in the main air passage to open the first valve member, and the high-pressure air in the main air passage is opened to the bottom cylinder chamber to drive the nail rod. Upward reset, and the high pressure air in the main air chamber can be vented through one of the gun bodies to eliminate the high pressure air in the gun body .

According to the above, the present invention provides a power-on and power-off that can be controlled (ie, turned on and off) to supply high-pressure air to the main air chamber timing according to the nailing operation habit. The switch configuration technology, and after the nail is placed (ie, after the nail bar is reset), the air gun is stopped, and the air supply of the air compressor is removed, and the high-pressure air originally collected in the main air chamber of the gun body is released ( Including the cylinder), to eliminate the possibility of high pressure air in the gun body, to avoid safety concerns due to user misjudgment.

In addition, the specific technical means of the present invention may also include:

The main air passage and the auxiliary air passage may be respectively disposed inside the bottom end of the gun body adjacent to the safety slider; thus, the main air passage and the auxiliary air passage may be respectively adjacent to the outer wall end edge of the bottom end of the gun body, It is beneficial to reduce the complexity of the gun body on the molding and drilling and processing of the main gas path and the auxiliary gas path.

The safety slider is moved down to reset, and the power-on switch is released.

A spring is disposed between the second valve member and the inner wall of the auxiliary air passage, is pressed when the second valve member is opened, and uses the spring to drive the second valve member to close the valve to block the auxiliary air passage. Go to the third valve.

The third valve member releases the power-off switch to reset when the high-pressure air accumulated in the auxiliary air passage is released.

The power-on switch can be disposed at the bottom end of the gun body and located on the upward moving path of the safety slider, and is pushed up by the safety slider.

A trigger is arranged on one side of the gun body, and an ear portion is disposed adjacent to the top end of the safety slider. The top end of the safety slider is provided with a buckle portion, and the ear portion is swung with the trigger, and is buckled with The safety slider is moved up on the buckle portion to brake the safety slider to move down and reset; thus, the safety slider must be moved down after the trigger is released to ensure that the nail gun operates in a safe use sequence.

The top end of the safety slider has a first end that can push the outer end, and a second end that can push the power switch, and the second end is provided with a touchable switch shrapnel.

In addition, the present invention also provides another preferred and specific technical means, which differs from the above in that a pressure sensor for sensing the pressure value of the high-pressure air is disposed in the main air chamber, and the pressure sensor is provided by the pressure sensor. The high-pressure air in the main air chamber is sensed to close the air compressor when the pressure is established to a specific pressure value; the second valve member and the third valve member of the power-off switch, the auxiliary air path and the sub-position valve are replaced accordingly.

However, in order to clearly and fully disclose the present invention, please refer to the following description of the embodiments and the drawings:

FIG. 1 is a schematic view showing the configuration of a preferred embodiment of the present invention, and the pneumatic nail gun striking rod reset driving device of the air compressor of the present invention is illustrated in FIG. In the gun body 1, a cylinder 2 is disposed in the gun body 1. The cylinder 2 can be a movable cylinder in the present embodiment, and a piston 21 is arranged in the cylinder 2, and a nail rod 22 is coupled to the bottom end of the piston 21. The piston 21 divides the interior of the cylinder 2 into a top cylinder chamber 23 and an underlying cylinder chamber 24; the gun body 1 is internally formed with a plurality of interconnected high pressure air main chambers 10 (shown in FIG. 2) distributed around the gun Between the periphery of the cylinder 2 in the body 1 and a grip portion 11, and an air compressor 61 and a battery 62 are disposed in the grip portion 11, the battery 62 can supply power to the air compressor 61 to drive the air compressor 61. Working, the air compressor 61 is forced to introduce outside air into the grip portion 11 to accumulate a certain constant pressure of high-pressure air in the main air chamber 10; the outer side of the gun body 1 slides a safety slider 4, which A valve 5 is disposed on the top of the cylinder 2, and a side of the gun body 1 adjacent to the grip portion 11 is provided with a main air chamber 10 Machine valve 3.

A collecting chamber 51 (shown in FIG. 3) is formed between the top inner wall of the gun body 1 and the head valve 5, and a main air chamber 10 and a top cylinder are formed between the periphery of the head valve 5 and the inner wall of the gun body 1. a main air valve port 50 of the chamber 23 (shown in FIG. 13); a side of the gun body 1 is pivoted with a trigger 31 adjacent to the trigger valve 3 (shown in FIG. 5), and a valve sleeve is slid inside the trigger valve 3 34, and a trigger valve stem 33 is slidably disposed in the valve sleeve 34. An air inlet passage 301 and an exhaust gas are formed between the valve sleeve 34 and the inner wall of the trigger valve 3 via the trigger 31 and the trigger valve stem 33. a channel 302 (shown in FIG. 9 and FIG. 12), and a trigger air passage 12 connecting the pressure collecting chamber 51 and the trigger valve 3 is formed in the gun body 1, and the air inlet passage 301 communicates with the main air chamber 10 and the trigger air passage 12, The exhaust passage 302 communicates the trigger air passage 12 with the outside atmosphere; however, the cylinder 2 of the nail gun, the trigger valve 3, the safety slider 4, the head valve 5, the air compressor 61 and the battery 62 are only a preferred embodiment. In fact, the present invention is not limited thereby; in other words, a nail gun that uses other movable or fixed cylinders, a trigger valve, a safety slider, and a head valve to control the nail and carries an air compressor therein, The present invention may be utilized.

According to the above, the present invention provides a main air passage 13 in the gun body 1, a first valve member 71 in the form of a cylindrical valve stem, a power-on switch 81 capable of starting the air compressor 61, and a closable air. a power-off switch 82 of the press 61, a pair of air passages 14 and a sub-position valve 7 (shown in conjunction with FIGS. 1 to 4); wherein the main air passage 13 is in communication with the main air chamber 10 and the bottom cylinder Between the chambers 24 (shown in FIG. 5), the auxiliary air passage 14 is connected to the main air chamber 10 and extends to the near side of the power-off switch 82 (shown in FIG. 6); in this embodiment, the The main gas path 13 and the auxiliary gas path 14 can be in cross communication, and a second valve port 141 is formed at the intersection of the main gas path 13 and the auxiliary gas path 14 , and the bottom end of the gun body 1 is provided with a connecting main and auxiliary gas path. The first valve member 71 is slidably disposed on the main air passage 13 , and the first valve member 71 is slidably disposed on the main air in the present embodiment. The intersection of the road 13 and the auxiliary air passage 14 and the guide hole 15 are formed, and the top end and the bottom end of the first valve member 71 respectively form an inner end portion 711 driven by high-pressure air, and a safety slider 4 is pushed. Outer end 712, the main Chamber 10 through the main air passage 13 leading to the inner end portion 711, the outer end portion of the bottom end of a bit line 712 secure the slider 4 pharmaceutically push contact guide hole 15 exposed to the body via the gun.

The outer wall of the first valve member 71 is respectively provided with an upper air sealing washer 713, a middle air sealing washer 714 and a lower air sealing washer 715 (shown in FIG. 5 and FIG. 6) from the top to the bottom, one of the main air passages 13 A first valve port 131 is formed at the bend, and when the first valve member 71 is moved down to the position, and the first valve member 71 is opened, the upper air washer 713 moves downward with the first valve member 71. Below a valve port 131, the main air passage 13 is blocked from passing through the guide hole 15 to the outside atmosphere, and the main air chamber 10 is opened to the bottom cylinder chamber 24 via the main air passage 13 and the first valve port 131, and the air cushion is stopped. The ring 714 moves down to the second valve port 141 with the first valve member 71, and blocks the auxiliary air passage 14 from passing through the second valve port 141 and the guiding hole 15 to the outside atmosphere; the user pushes the safety before the nail is pressed. When the slider 4 is moved up to the positioning (as shown in FIG. 9 and FIG. 11), the outer end portion 712 is pushed by the safety slider 4 to drive the first valve member 71 to move to the position, and the first valve is made. The member 71 is in a closed state, such that the upper air washer 713 moves up the first valve member 71 to the first valve port 131, blocking the main air passage 13 from passing through the first valve port 131 to the bottom cylinder chamber 24, and Stop air washer 71 4, as the first valve member 71 moves up between the first valve port 131 and the second valve port 141, blocking the main air passage 13 from the first valve port 131 and the second valve port 141 to the auxiliary air passage 14 while The lower air bearing washer 715 moves up to the second valve port 141 with the first valve member 71, blocking the second valve port 141 from opening to the outside atmosphere; but during the movement of the first valve member 71, the lower (Fig. 15) As shown in FIG. 16 , the upper air washer 713 passes over the first valve port 131 along with the first valve member 71 , and the gas washer 714 is stopped with the first valve member 71 passing under the second valve port 141. The open bottom cylinder chamber 24 leads to the auxiliary air passage 14 via the first valve port 131 and the second valve port 141.

The power-on switch 81 is disposed at the bottom end of the gun body 1 (as shown in FIG. 1 , FIG. 3 and FIG. 5 ), and is located on the upward moving path of the safety slider 4 , and can receive the safety slider 4 to move. Starting, the power-off switch 82 is disposed inside the bottom end of the gun body 1 (as shown in FIG. 3, FIG. 4 and FIG. 6); in this implementation, the power-on switch 81 can be a normally open button switch ( As shown in FIG. 7 , and having an elastic resetting capability, the power-off switch 82 can also be a normally closed push button switch, and has an elastic reset capability, and the power-on switch 81 and the power-off switch 82 are connected in series to the air. Between the press 61 and the battery 62; thus, in the state where the power-off switch 82 is not touched, if the power-on switch 81 is pushed up by the safety slider 4 (as shown in FIG. 9), The battery 62 and the air compressor 61 are turned on, and then the air compressor 61 is started to supply high-pressure air to the main air chamber 10 for collecting pressure. At this time, if the safety slider 4 is moved down and reset (as shown in FIG. 17), it is released. The power-on switch 81 is reset, and the battery 62 and the air compressor 61 are returned to the non-conducting state, so that the air compressor 61 is stopped.

The sub-position valve 7 is slidably disposed on the auxiliary air passage (as shown in FIG. 2, FIG. 4 and FIG. 6), and the sub-position valve 7 includes a second valve member 72 in the form of a cylindrical valve stem and a cylindrical shape. a third valve member 73 in the form of a valve stem, the second valve member 72 is slidably disposed on the auxiliary air passage 14, and the third valve member 73 is slidably disposed on the second valve member 72 and the power-off switch In the present embodiment, the bottom end of the gun body 1 is provided with a receiving hole 16 connecting the auxiliary air path 14 and the outside atmosphere, and is located beside the guiding hole 15, the first The second valve member 72 is slidably disposed in the auxiliary air passage 14 and the accommodating hole 16 between the main air chamber 10 and the first valve member 71, and the top end of the second valve member 72 forms a damper that is driven by high-pressure air. 721, the main air chamber 10 leads to the blocking portion 721 via the auxiliary air passage 14; the outer wall of the second valve member 72 is respectively sleeved with a front air sealing washer 722 and a rear air sealing washer 723 from top to bottom, and second A spring 724 is disposed between the valve member 72 and the inner wall of the auxiliary air passage 14 , and the spring 724 is disposed between the bottom of the second valve member 72 and the receiving hole 16 , and the second valve is driven by the spring 724 . The valve 72 is moved off the valve, causing the front air The washer 722 moves up to the second valve port 141 with the second valve member 72, blocks the main air chamber 10 from passing through the auxiliary air passage 14 and the second valve port 141 to the third valve member 73, and the rear air retaining washer 723 The second valve member 72 is moved up to the second valve port 141 to prevent the second valve port 141 from passing through the accommodating hole 16 to the outside atmosphere; in the state in which the main air chamber 10 accumulates a certain constant pressure of high-pressure air, The blocking portion 721 is driven by the high-pressure air in the auxiliary air passage 14 to overcome the elastic force of the spring 724, and the second valve member 72 is moved downward to open the valve (as shown in FIG. 11), so that the spring 724 is biased by the second valve member 72. Compressed downward, and the front air retaining washer 722 moves down to the second valve port 141 with the second valve member 72, and the open main air chamber 10 leads to the power-off switch 82 via the auxiliary air passage 14 and the second valve port 141. The air lock washer 723 is still located below the second valve port 141 to prevent the second valve port 141 from passing through the accommodating hole 16 to the outside atmosphere.

The end of the auxiliary air passage 14 is connected to the outside atmosphere, and the power-off switch 82 is disposed. The third valve member 73 is slidably disposed between the first valve member 71 and the power-off switch 82. The end of the auxiliary air passage 14 is 142, and the top end and the bottom end of the third valve member 73 respectively form a gas blocking portion 731 that is driven by high-pressure air, and a pushing portion 732 that pushes the power-off switch 82. The auxiliary air passage 14, the second valve member 72 and the first valve member 71 are connected to the gas blocking portion 731; the outer wall of the third valve member 73 is sleeved with a gas stop washer 733 to block the auxiliary gas passage 14 from the end 142 thereof. The power-off switch 82 is connected to the outside atmosphere. Since the power-off switch 82 itself has an elastic resetting capability, the push-up portion 732 can be driven upward to drive the third valve member 73 up and reset, and the power-off switch 82 remains in the on state; When the high pressure air of the main air chamber 10 drives the second valve member 72 to open through the auxiliary air passage 14 (as shown in FIG. 11), the gas blocking portion 731 is subjected to the end 142 of the auxiliary air passage 14 via the second valve port 141. The high-pressure air is driven to move the third valve member 73 downward, so that the pushing portion 732 pushes the power-off switch 82 to close the air compressor, thereby causing the power-off switch 82 switches to a non-conducting state.

In a more specific implementation, the invention also includes:

A first end portion 41 (shown in FIGS. 3 and 5) that can push the outer end portion 712 of the first valve member 71 is formed at a bend of the top end of the safety slider 4, and a push can be touched. The second end portion 42 of the electric switch 81 is provided with a U-shaped elastic piece 43 (shown in FIG. 8) that can activate the power-on switch 81.

The main air passage 13 and the auxiliary air passage 14 are substantially respectively disposed inside the bottom end of the gun body 1 adjacent to the safety slider 4 (as shown in FIGS. 1 to 3); thus, the main air passage 13 and the main air passage 13 are The secondary air passages 14 may be adjacent to the outer wall end edges of the bottom end of the gun body 1, respectively, which will be advantageous for reducing the complexity of the gun body 1 on molding and drilling the main air passage 13 and the auxiliary air passage 14.

The trigger 31 is disposed adjacent to the top end of the safety slider 4 with an ear portion 32 (as shown in FIG. 3, FIG. 5 and FIG. 8). The top end of the safety slider 4 is provided with a buckle portion 44, and the buckle portion 44 is substantially Is a through slot, and the ear portion 32 can swing with the trigger 31 (as shown in FIG. 12), and is fastened to the buckle portion 44 that moves up with the safety slider 4 to brake the safety slider 4 Shift reset; thus, the safety slider 4 must be moved down after the release of the trigger 31 to ensure that the nail gun operates in a safe use sequence.

According to the above component composition, when the user does not push the safety slider 4 up and does not press the trigger 31 (as shown in FIGS. 1, 3 and 5), the air compressor 61 is not activated, and the main The high pressure air is not accumulated in the gas chamber 10, at this time, the first valve member 71 is kept open, the second valve member 72 is kept closed (as shown in FIG. 2, FIG. 4 and FIG. 6), and the power switch 81 is turned off. The switch 82 is untouched while the piston 21 and the strut 22 are held in the top end of the cylinder 2 and the head valve 5.

When the user pushes the safety slider 4 up before the nailing (as shown in FIG. 9 and FIG. 10), the first end portion 41 of the safety slider 4 pushes upward against the outer end portion 712 to drive the first A valve member 71 is moved up, and the first valve member 71 is closed, and the elastic piece 43 of the second end portion 42 pushes the power-on switch 81 upward, and the air compressor 61 is activated to operate, so that the air compressor 61 is opposite. The outside air is forcibly introduced into the grip portion 11 to accumulate high-pressure air in the main air chamber 10; at this time, the high-pressure air of the main air chamber 10 enters the collecting pressure of the head valve 5 via the intake passage 301 of the trigger valve 3 and the trigger air passage 12. The pressure is collected in the chamber 51, and the first valve member 71 blocks the high-pressure air of the main air chamber 10 from passing through the main air passage 13 and the first valve port 131 to the bottom cylinder chamber 24, and the piston 21 and the nail rod 22 remain. In the top of the cylinder 2 and the head valve 5.

When the high-pressure air in the main air chamber 10 accumulates to the certain constant pressure, the high-pressure air is forced to drive the blocking portion 721 (as shown in FIG. 11) downward through the auxiliary air passage 14 to drive the second valve member of the sub-position valve 7. 72 is opened, so that the high-pressure air in the auxiliary air passage 14 leads to the end 142 of the auxiliary air passage 14 via the second valve port 141, and drives the choke portion 731 of the sub-position valve 7 downward, thereby causing the sub-position valve 7 to move its push portion. The 732 pushes the power-off switch 82 downward, and causes the power-off switch 82 to turn off the air compressor 61.

Then, the user can press the trigger trigger valve 3 to drive the nail bar 22 to move the nail down (as shown in FIG. 12 and FIG. 13), and when the user presses the trigger 31, the trigger valve is triggered by the trigger 31. The rod 33 interlocks the valve sleeve 34 to open the exhaust passage 302, and simultaneously closes the intake passage 301, so that the high-pressure air in the pressure collecting chamber 51 is discharged to the outside atmosphere via the trigger air passage 12 and the exhaust passage 302, so that the periphery of the cylinder 2 The high pressure air in the main air chamber 10 drives the head valve 5 and the cylinder 2 to move up to open the main air valve port 50, so that the high pressure air in the main air chamber 10 enters the top cylinder chamber 23 via the main air valve port 50, The driving piston 21 drives the nail rod 22 to move the nail downward; at the same time, the ear portion 32 is swung to the buckle portion 44 by the action of the buckle trigger 31, and the brake safety slider 4 is moved down and reset.

Immediately after the user releases the trigger 31 after the nail is pressed (as shown in FIG. 14), the ear portion 32 swings the release button portion 44 to release the safety slider 4 to move downward; meanwhile, the trigger valve lever 33 is released by the trigger 31. To open the intake passage 301 and simultaneously close the exhaust passage 302, so that the high-pressure air of the main air chamber 10 enters the accumulating pressure in the collecting chamber 51 via the intake passage 301 and the trigger air passage 12 to drive the head valve 5 and the cylinder 2 The main air valve port 50 is moved and closed, and the high pressure air in the main air chamber 10 is blocked from entering the top cylinder chamber 23 via the main air valve port 50.

After the trigger 31 is released, the user releases the safety slider 4 to move down (as shown in FIG. 15 and FIG. 16), and the high-pressure air of the main air chamber 10 drives the inner end portion 711 downward through the main air passage 13, thereby driving the first When the valve member 71 moves downward, and the first valve member 71 moves from the closed valve state to the open state, the bottom cylinder chamber 24, the first valve port 131, and the second valve port 141 are instantaneously connected to the auxiliary air passage 14. The high-pressure air of the main air chamber 10 is caused to enter the bottom cylinder chamber 24 via the auxiliary air passage 14, the second valve port 141, and the first valve port 131; meanwhile, the high-pressure air accumulated at the end 142 of the auxiliary air passage 14 passes through the second valve port 141. And the first valve port 131 is vented into the bottom cylinder chamber 24, and the push portion 732 of the sub-position valve 7 releases the power-off switch 82 to elastically reset, and drives the third valve member 73 of the sub-position valve 7 to be reset.

When the safety slider 4 is moved down to the positioning (as shown in FIGS. 17 and 18), the inner end portion 711 is driven by the high-pressure air in the main air passage 13 to open the first valve member 71, blocking the bottom cylinder. The chamber 24 communicates with the second valve port 141 and the auxiliary air passage 14 via the first valve port 131, and the high-pressure air that opens the main air chamber 10 enters the bottom cylinder chamber 24 via the main air passage 13 and the first valve port 131, and drives the piston 21 and The nailing bar 22 is moved up and reset, so as to complete the driving and pushing operation of the nailing rod 22; during this time, the high pressure air in the main air chamber 10 and the bottom cylinder chamber 24 can also guide the nail rod through one of the bottoms of the bottom cylinder chamber 24 22, the perforating hole 17 is vented to the outside atmosphere, and the main air chamber 10 is returned to the state where the high-pressure air is not accumulated, so that the second valve member 72 is driven to move up by the spring 724 (as shown in FIG. 6), The second valve member 72 of the position valve 7 is closed.

According to the above, the present invention provides a power-on and power-off switch configuration technique capable of regulating (ie, opening and closing) the air compressor 61 to supply high-pressure air to the main air chamber 10 according to the nailing operation habit, and After the nail gun is stopped (ie, after the nail bar 22 is reset), not only the air supply of the air compressor 61 is stopped, but also the high-pressure air (including the cylinder 2) originally collected in the main air chamber 10 of the gun body 1 is discharged. In order to eliminate the possibility of collecting high-pressure air in the gun body 1, and avoiding safety concerns due to user misjudgment.

In addition, the present invention also provides another preferred and specific technical means, which differs from the above in that a pressure sensor 9 capable of sensing the pressure value of the high-pressure air is disposed in the main air chamber 10. As shown in FIG. 19, in the present embodiment, the pressure sensor 9 is externally connected or internally provided with a normally closed switch 91 (shown in FIG. 20). The normally closed switch 91 is connected in series with the power-on switch 81. The air compressor 61 is connected to the battery 62, and the pressure sensor 9 can open and close the normally closed switch 91 according to the sensed pressure value of the high pressure air, and the pressure sensor 9 senses the high voltage in the main air chamber 10. When the air is pressurized to a specific pressure value, the air compressor 61 is closed; and the high pressure air pressure for driving the nail in the general nail gun is about 70 to 120 psi, as described in the embodiment. The pressure value can be set to 90 psi; accordingly, the second valve member 72 and the third valve member 73 of the power-off switch 82, the auxiliary air passage 14, the second valve port 141, the spring 724, and the sub-position valve 7 are replaced. The component composition and embodiment are equivalent to the above embodiments.

In the above, the present invention is not limited to the preferred embodiment of the present invention, and other equivalent modifications or substitutions that are not departing from the spirit of the present invention should be included in the following patent application. Within the scope.

1. . . Gun body

10. . . Main air chamber

11. . . Grip

12. . . Trigger airway

13. . . Main gas road

131. . . First valve port

14. . . Secondary gas path

141. . . Second valve port

142. . . End

15. . . Guide hole

16. . . Socket hole

17. . . Perforation

2. . . cylinder

twenty one. . . piston

twenty two. . . Nail bar

twenty three. . . Top cylinder chamber

twenty four. . . Bottom cylinder chamber

3. . . Trigger valve

301. . . Intake passage

302. . . Exhaust passage

31. . . trigger

32. . . Ear

33. . . Trigger stem

34. . . Valve sleeve

4. . . Safety slider

41. . . First end

42. . . Second end

43. . . shrapnel

44. . . Buckle

5. . . Head valve

50. . . Main air valve port

51. . . Cushion chamber

61. . . Air compressor

62. . . battery

7. . . Secondary valve

71. . . First valve

711. . . Inner end

712. . . Outer end

713. . . Upper air washer

714. . . Stop gas gasket

715. . . Lower air washer

72. . . Second valve

721. . . Stop

722. . . Front air retaining washer

723. . . Rear air washer

724. . . spring

73. . . Third valve

731. . . Gas barrier

732. . . Push department

733. . . Air lock washer

81. . . Power switch

82. . . Power off switch

9. . . Pressure sensor

91. . . Normally closed switch

Figure 1 is a schematic view showing the configuration of a preferred embodiment of the present invention.

Figure 2 is a cross-sectional view taken along line A-A of Figure 1.

Figure 3 is a partial enlarged view of Figure 1.

Figure 4 is a partial enlarged view of Figure 2.

Figure 5 is a partial enlarged view of Figure 3.

Figure 6 is a partial enlarged view of Figure 4.

Figure 7 is a circuit diagram of the air compressor, battery and switch of the present invention.

Figure 8 is an exploded perspective view of the safety slider and trigger of the present invention.

Figure 9: A state diagram for use in one of Figure 5.

Figure 10: A state diagram for use in one of Figure 3.

Figure 11: A state diagram for use in one of Figure 6.

Figure 12: A state diagram for use in one of Figure 9.

Figure 13: A state diagram for use in one of Figure 10.

Figure 14: A state diagram for use in one of Figure 13.

Figure 15: A state diagram for use in one of Figure 12.

Figure 16: A state diagram for use in one of Figure 11.

Figure 17: A state diagram for use in one of Figure 15.

Figure 18: A state diagram for use in one of Figure 14.

Figure 19 is a schematic view showing the configuration of an additional embodiment of Figure 1.

Figure 20 is a circuit diagram between the air compressor, the battery, the pressure sensor and the power-on switch of Figure 19.

1. . . Gun body

10. . . Main air chamber

11. . . Grip

12. . . Trigger airway

13. . . Main gas road

2. . . cylinder

twenty one. . . piston

twenty two. . . Nail bar

twenty three. . . Top cylinder chamber

twenty four. . . Bottom cylinder chamber

3. . . Trigger valve

31. . . trigger

4. . . Safety slider

5. . . Head valve

51. . . Cushion chamber

61. . . Air compressor

62. . . battery

71. . . First valve

81. . . Power switch

Claims (15)

The utility model relates to a pneumatic nail gun striking rod reset driving device of an internal air compressor, which is arranged in a gun body which is provided with a main air chamber, an underlying cylinder chamber, a striking rod, an air compressor and a safety sliding rod, and the setting comprises: The power-on switch of the air compressor can be started to be activated by the movement of the safety slider; the power-off switch of the air compressor can be turned off; a main air path is connected between the main air chamber and the bottom cylinder chamber, and a first valve member is slid on the main air passage, and is located on the upward moving path of the safety slider; the safety valve is moved up and the first valve member is closed to block the main air passage, and the main air passage is blocked. The power-on switch activates the air compressor to supply high-pressure air to the main air chamber, and the nail gun drives the nail rod to move the nail; and a pair of air passages are connected to the main air chamber, and the auxiliary air passage is slid a sub-position valve; the high-pressure air of the main air chamber drives the sub-position valve to move, so that the sub-position valve pushes the power-off switch to close the air compressor; and the safety slider slides down to make the main air path The high pressure air drives the first valve member to open the valve, and drives the nail rod to move up and reset, and is vented by one of the gun bodies. The bottom of the main chamber and the cylinder chamber of high pressure air. The pneumatic nail gun striking rod reset driving device of the internal air compressor according to the first aspect of the patent application, wherein the sub-position valve comprises a second valve member and a third valve member, respectively arranged at intervals in the auxiliary air On the road, the second valve member is driven by the high pressure air of the main air chamber to open the valve, and the third valve member is driven to push the power off switch to close the air compressor. The pneumatic nail gun striking rod reset driving device of the internal air compressor according to claim 2, wherein the main air passage is in cross communication with the auxiliary air passage system, and the first valve member is slidably disposed on the main air passage. And communicating with the auxiliary air passage, and the first valve member is in a closed state and a valve open state, and communicates with the bottom cylinder chamber and the auxiliary air passage. The utility model relates to a pneumatic nail gun striking rod reset driving device for an internal air compressor, which is arranged in a gun body which is provided with a main air chamber, an underlying cylinder chamber, a striking rod, an air compressor, a safety sliding rod and a trigger valve. The setting comprises: a main gas path connected between the main air chamber and the bottom cylinder chamber; a power-off switch capable of closing the air compressor, disposed in the gun body; and a pair of air passages connected to the main air chamber And extending to the near side of the power-off switch, and the main air passage is in cross-connection with the auxiliary air passage; a first valve member is slidably disposed at an intersection of the main air passage and the auxiliary air passage, and includes a Receiving the inner end portion driven by the high-pressure air and the outer end portion received by the safety slider, the outer end portion is pushed by the safety slider when the user pushes the safety slider up and down before the nail is pushed Driving the first valve member to close the valve, blocking the main air passage to the bottom cylinder chamber; an activation switch capable of starting the air compressor, accepting the movement of the safety slider to start the air compressor to supply high pressure air to the main a chamber for pressing the trigger valve to drive the nail to move the nail down; a second And sliding on the auxiliary air passage between the main air chamber and the first valve member, and having a high-pressure air-driven blocking portion, wherein the blocking portion receives the high-pressure air in the main air chamber The second valve member is opened by the high-pressure air in the auxiliary air passage; and a third valve member is intermittently disposed on the auxiliary air passage between the first valve member and the power-off switch, and includes a receiving high voltage An air-driven gas blocking portion and a pushing portion of the push-off power switch, wherein when the high-pressure air drives the second valve member to open the valve, the gas-blocking portion is driven by the high-pressure air in the auxiliary air passage, so that the pushing portion is pushed The air compressor is turned off by touching the power-off switch; when the user releases the safety slider to move down and reset after the nail is pressed, the inner end portion is driven by the high-pressure air in the main air passage to open the first valve member. The high pressure air in the main air passage is opened to the bottom cylinder chamber to drive the nail rod up and reset, and the high pressure air in the main air chamber and the bottom cylinder chamber is discharged by one of the gun body perforations. The pneumatic nail gun striking rod reset driving device of the internal air compressor according to claim 4, wherein the first valve member is connected to the bottom cylinder chamber and the sub air during the self-closing valve state to the valve opening state. road. The pneumatic nail gun striking rod reset driving device of the internal air compressor according to claim 1 or 4, wherein the auxiliary air passage is disposed inside the bottom end of the gun body adjacent to the safety sliding rod. The pneumatic nail gun striking rod reset driving device of the air compressor according to claim 2 or 4, wherein a spring is disposed between the second valve member and the inner wall of the auxiliary air passage, and the second valve is disposed between the second valve member and the inner wall of the auxiliary air passage The piece is pressed when the valve is opened, and the spring is used to drive the second valve member to close the valve, and the auxiliary air passage is blocked to the third valve member. The pneumatic nail gun striking rod reset driving device of the internal air compressor according to claim 2 or 4, wherein the third valve member releases the power failure when the high pressure air accumulated in the auxiliary air passage is released The switch is reset. The utility model relates to a pneumatic nail gun striking rod reset driving device of an internal air compressor, which is arranged in a gun body which is provided with a main air chamber, an underlying cylinder chamber, a striking rod, an air compressor and a safety sliding rod, and the setting comprises: The power-on switch of the air compressor can be started to be activated by the movement of the safety slider; a main air passage is connected between the main air chamber and the bottom cylinder chamber, and a first valve member is slid on the main air passage Located on the upward moving path of the safety slider; the safety valve slides up and touches the first valve member to close the main air circuit, and pushes the power switch to start the air compressor to supply high-pressure air To the main air chamber, the nail gun drives the nail rod to move the nail; a pressure sensor is disposed in the main air chamber to sense the pressure value of the high pressure air; and the safety slider moves down to make the main The high pressure air in the air passage drives the first valve member to open the valve, and drives the nail rod to move up and reset, and the pressure sensor senses that the high pressure air in the main air chamber closes the air when the pressure is established to a specific pressure value. Pressing, and venting the high pressure air in the main air chamber and the bottom cylinder chamber by a perforating hole of the gun body. The pneumatic nail gun striking rod reset driving device of the internal air compressor is described in claim 1, wherein the opening and closing relationship is set at the bottom end of the gun body and is located on the safety slider. On the moving path, the safety slider is moved up and pushed. The pneumatic nail gun striking rod reset driving device of the internal air compressor is described in claim 1, wherein the main air passage is disposed inside the bottom end of the gun body adjacent to the safety slider. The pneumatic nail gun striking rod reset driving device of the internal air compressor is described in claim 1, wherein the safety slider is moved down to reset, and the power-on switch is released. The pneumatic nail gun striking rod reset driving device of the air compressor according to claim 1, wherein the gun body is pivotally disposed on a side of the gun body, and the trigger is adjacent to the top end of the safety slider. An ear portion is disposed. The top end of the safety slider is provided with a buckle portion, and the ear portion is swung with the trigger, and is fastened to the buckle portion that moves up with the safety slider to brake the safety slider to move down and reset. The pneumatic nail gun striking rod reset driving device of the internal air compressor according to claim 4, wherein the safety slider top has a first end portion that can push the outer end portion, and a pushable touch The second end of the power switch. The pneumatic nail gun striking rod reset driving device of the internal air compressor according to claim 14 , wherein the second end portion is provided with a spring piece that can touch the power-on switch.