CN2871118Y - Nailer safety device - Google Patents

Abstract

The utility model relates to a nailing gun safety device, it is including setting up top trigger device, drive arrangement and the pneumatic safety device on the nail rifle body of pneumatic nail rifle. The jacking device is arranged on the nail gun head of the nail gun body and can slide along the nail gun head; the driving device is pivoted on the pneumatic safety device, and two ends of the driving device are in clamping linkage with the jacking device and the pneumatic safety device; the pneumatic safety device comprises a valve seat and an air valve. When the trigger switch is started, if the jacking device is abutted against the wall surface of a construction place, the jacking device can be pressed to limit the position of the air valve to move through the driving device, so that the air valve is stopped at a pressure relief position; if the top trigger device is not pressed when the trigger switch is started, the air valve pushes the driving device away without being limited by the top trigger device, and the air valve stops at a closed position and cannot release pressure to trigger. The utility model discloses simple structure uses gas pressure as the reducible mechanical failure of safety device and the inconvenience that causes moreover.

Description

Nailer safety device

【Technical field】

The utility model relates to a nailing gun, in particular to a safety device for the nailing gun.

【Background technique】

Due to the advantages of easy portability, stable power supply, and easy operation and use, small power tools have gradually replaced conventional human tools and become indispensable construction tools for various projects such as construction, civil engineering, and decoration. With the maturity of production technology, various more humanized power tools have been introduced to the market one after another, so that consumers have more diversified choices, and the direction of research and development has also extended from fast and convenient use to safety structure. .

The nailing guns seen in the market can be divided into two categories: electric nailing guns and pneumatic nailing guns. Among them, the pneumatic nailing guns use an air compressor to generate high-pressure air and achieve the purpose of firing with a pressure difference.

In order to prevent the nail gun from inadvertently firing and accidentally injuring people or objects, it is necessary to install a safety device to maintain the safety of the user. The commonly used safety device of the nail gun, such as Taiwan Patent No. M250772, discloses a nail gun based on a mechanical The mechanical linkage method achieves the effect of preventing accidental firing. However, the mechanical linkage method is difficult to maintain the efficacy of the safety device for a long time due to the complexity of the components and the failure-prone, and it is more likely that the nail gun cannot be fired at all due to failure , for both the industry and the user, it is a negative impact.

【Content of utility model】

The technical problem to be solved by the utility model is to provide a safety device for a nailing gun, which has simple components, reliable functions, and is not prone to failure, which can improve the disadvantages of conventional mechanical safety devices, such as easy transmission failure and complicated structure.

In order to solve the above technical problems, the technical solution adopted by the utility model is to provide a nail gun safety device, which is arranged on the nail gun body, including a pneumatic safety device, a jacking device and a driving device, and the pneumatic safety device It includes a valve seat and an air valve set in the valve seat. The air valve can slide in the valve seat; the push device is linked with the drive device, and the push device can limit the air flow through the drive device. The position of the valve; the two ends of the drive device are respectively linked with the air valve and the top catch device of the pneumatic safety device.

More specifically, the jacking device is disposed on the nail gun head of the nail gun body in a slidable combined state.

More specifically, the driving device is pivotally arranged on the valve seat of the pneumatic safety device.

More specifically, when the firing switch is turned on, the gas charged into the valve seat is high-pressure air.

More specifically, there are connected front air passages and rear air passages where the air supply valve assembly of the valve seat is located, and the air valve is provided with an air guide port. Located at the deflated position where the air guide port and the front air channel of the valve seat are connected to each other, the high-pressure air inside the nail gun body flows into the rear air channel, and then passes through the air valve through the front air channel and the air guide port to release the pressure in the atmosphere.

More specifically, an elastic body is provided at the front end of the air valve. When the air pressure in the valve seat is low, the air valve is pushed by the elastic body to move inwardly of the valve seat and close the rear air passage.

The utility model pushes the gas valve with the principle of simple gas power, and limits the stop position of the gas valve through the driving device through the push device, so as to achieve the two states of pressure relief firing and closed non-firing, so that not only the structure is simple, Moreover, the use of gas pressure as a safety device can reduce the inconvenience caused by mechanical failure.

【Description of drawings】

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described

Detailed description:

Fig. 1 is a three-dimensional exploded view of a preferred embodiment of the present invention.

Fig. 2 is a partial sectional view of the embodiment shown in Fig. 1 installed on the nail gun body.

Fig. 3 is a schematic cross-sectional view of the safety device of the nailing gun in Fig. 2 in its original state.

Fig. 4 is a schematic cross-sectional view of the safety device of the nailing gun in Fig. 2 in a closed position.

Fig. 5 is a schematic cross-sectional view of the safety device of the nailing gun in Fig. 2 in a pressure release position.

【Detailed ways】

Please refer to Fig. 1 to Fig. 3, it is a preferred embodiment of the present utility model, and this nail gun safety device is arranged on a nail gun body 1, and this nail gun body 1 can be externally connected with an air compressor (not shown in the figure) ) and input high-pressure air to obtain the power source. When the trigger switch 10 of the nail gun body 1 is turned on, the nail is fired from the front end of the nail gun head 11 through the pressure difference (wherein, this kind of pneumatic nail gun using high-pressure air as the firing power belongs to the known technology, and this is not the case. repeat). The nail gun body 1 is provided with a jacking device 20 , a driving device 30 and a pneumatic safety device 40 .

The jacking device 20 includes a front top piece 21 and a push piece 22, the push piece 22 is fixed at the end of the front top piece 21, the front top piece 21 is sleeved on the front end of the nail gun head 11 of the nail gun body 1, And it is in a slidable combined state with the nail gun head 11. An elastic member 23 is provided between the pushing member 22 and the nailer head 11 , and the elastic member 23 provides elastic pushing force, so that the jacking device 20 retracts toward the side of the nailer head 11 when no external force is applied. The side edge of the pushing member 22 is extended to form a pushing portion 221 to move in unison with the driving device 30 .

The central part of the driving device 30 is pivoted on the pneumatic safety device 40 with a pivot 31, and its upper end is mounted on the nail gun head 11, and is locked with the pushing part 221 of the jacking device 20 in a linked state, so that the jacking device 20 can limit the deflated or closed state of the pneumatic safety device 40 through the driving device 30 .

The pneumatic safety device 40 includes a valve seat 41 , an air valve 42 disposed at the front end of the valve seat 41 , an elastic body 43 , a positioning piece 44 , a C-shaped buckle 45 and the like. The end of the valve seat 41 is provided with an air guide tube 411 , and the air guide tube 411 communicates with the high-pressure air in the nail gun body 1 . When the trigger switch 10 of the nail gun body 1 is turned on, the high-pressure air will be filled into the valve seat 41 of the pneumatic safety device 40 through the air guide tube 411, and the valve seat 41 is provided with two connected front air valves at the place where the air supply valve 42 is assembled. Road 412 and rear airway 413.

The air valve 42 is arranged on the front end of the valve seat 41, and is sleeved with an O-ring 421 to block the rear air passage 413 of the valve seat 41, so as to prevent the air pressure inside the valve seat 41 from leaking freely. A part of the front end of the air valve 42 is exposed outside the valve seat 41, and the front end of the air valve 42 is pushed inwardly by the C-shaped buckle 45 fastened on the nail gun body 1 in cooperation with the positioning piece 44 and the elastic body 43 to push the air valve 42 toward the valve seat 41. . Moreover, the gas valve 42 can slide in the valve seat 41 , and when the high-pressure gas is charged into the valve seat 41 , it is pushed toward the outside of the valve seat 41 by the gas pressure. The air valve 42 and the driving device 30 abut against each other, so that the pushing device 20 can limit the position of the air valve 42 in the valve seat 41 through the driving device 30 . The air valve 42 is provided with an air guide port 422. When the air guide port 422 communicates with the front air passage 412 of the valve seat 41, and the O-ring 421 of the air valve 42 is removed to open the rear air passage 413, the nail gun body 1 flows The high-pressure gas in the valve seat 41 can be released into the atmosphere, which is called the pressure relief position of the gas valve 42 at this time. When the air guide port 422 is not in communication with the front air passage 412, or the rear air passage 413 is closed by the O-ring 421 and cannot allow the gas in the valve seat 41 to flow in, the closed position of the air valve 42 cannot be released.

Please refer to Fig. 4 and Fig. 5 together. When the utility model is in use, whether the gas pressure is released or not is used to provide the effect of safe firing of the nail gun body 1, and to reduce the shortcoming that the mechanical safety device is easy to fail.

As shown in Figure 3, when the firing switch 10 is not turned on, the ejector device 20 is pushed back by the elastic member 23 and retracts toward the inner side of the nail gun mouth, and the air valve 42 in the valve seat 41 is supported by the elastic member 43 at its front end. Push against, and move to the inner direction of valve seat 41. At this time, the O-ring 421 of the air valve 42 is located inside the rear air passage 413 , blocking the air guide tube 411 of the valve seat 41 from the rear air passage 413 .

As shown in Figure 4, when the firing switch 10 is directly opened without pressing the push-off device 20, high-pressure gas is charged into the valve seat 41 and pushes the gas valve 42 outward, and the front end of the push-off device 20 is not fixed, so the drive device 30 The air valve 42 cannot be limited and stops at the pressure relief position, and is pushed away by the influence of the forward movement of the air valve 42. When the driving device 30 is pushed away, the pushing part 221 of the push device 20 will be forced to the nailer head. 11 Push the front end, and the air valve 42 will be pushed out until it contacts the positioning piece 44. At this time, the air guide port 422 of the air valve 42 is not in communication with the front air channel 412 of the valve seat 41 , so the pressure release and firing still cannot be performed, and the air valve 42 is in the closed position.

As shown in Figure 5, when the front end of the push-off device 20 fits against the wall surface 50 of the application place and cannot be pushed forward, the firing switch 10 is turned on, and the high-pressure gas is filled into the valve seat 41 from the air guide tube 411, and the air valve 42 is pushed toward the valve seat 41. The valve seat 41 moves in the outer direction, because the front end of the push device 20 is against the wall 50, so the push device 20 and the driving device 30 will not be pushed away by the air valve 42, and the air valve 42 can only move forward for a short distance. Not in contact with the positioning piece 42. At this moment, the O-ring 421 of the air valve 42 is just positioned at the outside of the rear air passage 413, and no longer blocks the gas circulation between the valve seat 41 air guide pipe 411 and the rear air passage 413, and the air guide port 422 of the air valve 42 is also connected to the front air passage. 412 connection, so the high-pressure gas coming from the inside of the nail gun body 1 can pass through the valve seat 41 air guide tube 411, the valve seat 41 rear air passage 413, the valve seat 41 front air passage 412, and the air valve 42 air guide port 422 to connect with The external atmosphere is connected to release the pressure to cause a pressure difference to form a trigger, and the position of the air valve 42 is called the pressure relief position.

When the pressure in the valve seat 41 decreases, the air valve 42 and the ejection device 20 are pushed against by the elastic body 43 and the elastic member 23 respectively, and return to the original position shown in FIG. 3 , so that the firing procedure can be performed again.

The utility model pushes the air valve 42 with simple gas power principle, and the stopping position of the air valve 42 is limited by the push device 20 through the driving device 30, so as to achieve two states of pressure relief firing and closed non-firing, so Not only is the structure simple, but also the use of gas pressure as a safety device can reduce the inconvenience caused by mechanical failure.

Claims (6)

1, a kind of ailing machine safety device, be arranged on the nail gun body, it is characterized in that: described safety device comprises pneumatic safeties, pushes up and pull device and drive device, and described pneumatic safeties comprise a valve seat and be located at the interior air valve of valve seat that described air valve slip is among valve seat; Described top pull device with drive the device interlock, the device of pulling by bearing down on one can see through the position that drives the spacing air valve of device; Described drive device two ends respectively with the air valve of pneumatic safeties and the top device interlock of pulling.

2, ailing machine safety device according to claim 1 is characterized in that: pull bonding state that device is slip of described top is arranged at the nail rifle head of nail gun body.

3, ailing machine safety device according to claim 1, it is characterized in that: described drive device is hubbed at the valve seat of pneumatic safeties.

4, ailing machine safety device according to claim 1 is characterized in that: when opening percussion switch, the gas that charges into valve seat is pressure-air.

5, ailing machine safety device according to claim 4, it is characterized in that: described valve seat steam supply valve group is established part and is provided with preceding air flue and the back air flue that is connected, air valve is provided with air guide port, when the top pulls that device is pressed and when opening percussion switch, air valve is positioned at air guide port and the preceding interconnective disappointing position of air flue of valve seat, the pressure-air of nail gun body inside flows into the back air flue and passes through air valve by preceding air flue, air guide port again, and release pressure is in atmosphere.

6, ailing machine safety device according to claim 5 is characterized in that: described air valve front end is provided with an elastomer, and when the valve seat internal gas pressure was low, air valve was moved by elastomeric pushing and pressing side direction in valve seat, and sealing back air flue.

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