TW202322987A - Cordless pneumatic nail gun capable of preventing the user from triggering the nail gun main body due to accidental touch - Google Patents

Abstract

The present invention provides a cordless pneumatic nail gun. Through setting a gas circulation structure inside a handle of a nail gun main body, and then setting a high-pressure gas cylinder on a fastening part of the gas circulation structure, the gas in the high-pressure gas cylinder can be recycled through the gas circulation structure to be utilized and circulated repeatedly in the gas circulation structure, in order to prolong the use time of the high-pressure gas cylinder, facilitate portability and solve the problem of inconvenience for construction. In addition, a safety abutting member arranged on the nail gun main body can be used as a safety to prevent the user from triggering the nail gun main body due to accidental touch, in order to improve overall safety of the cordless pneumatic nail gun.

Description

Cordless Pneumatic Nailer

The present invention is a nail gun, especially a wireless pneumatic nail gun. Through the gas circulation structure inside the nail gun body, the nail gun of the present invention does not need to be connected to an air duct during use, which is convenient for users to carry and use, and the air It can be recycled and reused through the gas circulation structure.

Referring to FIG. 10 , it is disclosed that a conventional pneumatic nail gun 70 needs to be connected to one end of an air duct 72 , and the other end of the air duct 72 is connected to an air compressor 74 , and the air injected through the air compressor 74 is transported to the air duct 72 The pneumatic nail gun 70 is used as power to drive the nails. After the pneumatic nail gun 70 is used, the air duct 72 must be pulled out, that is, no gas will flow into the pneumatic nail gun 70, so as to maintain safety and avoid hitting nails by mistake. danger.

However, in practice, because the pneumatic nail gun 70 needs to be connected to the air pipe 72, the user will often be tripped by the air pipe 72 and cause danger during operation, and the pneumatic nail gun 70 needs to be removed after use. Pulling out and storing the air duct 72 increases the complexity of the operation process, so there is still room for improvement in the conventional technology.

The present invention discloses a wireless pneumatic nail gun. A gas circulation structure is arranged inside a nail gun body. A positioning structure is protruded from the inner wall surface of the nail gun body corresponding to a handle. The positioning structure is axially penetrated with a first perforation, the inner wall of the first perforation forms an internal thread, and a second perforation radially passes through the side wall of the positioning structure, the second perforation communicates with the first perforation, and the grip The outer wall of the handle is pivotally provided with a trigger and a safety catch, and the safety catch is located on the displacement path of the trigger; the gas circulation structure includes a gas chamber, a negative pressure device, a gas launch channel, a gas recovery channel, A breather valve, a piercing piece, at least one engaging piece and a high-pressure gas cylinder, the engaging piece is fixed on the inner wall surface corresponding to the handle, the high-pressure gas cylinder is clamped by the fastening piece, and the high-pressure gas cylinder A breaking surface is provided at both ends, one end of the gas launching channel is connected to the air chamber, the other end of the gas launching channel is combined with the vent valve, and the piercing member is provided at the end of the vent valve facing the high-pressure gas cylinder, and the piercing part faces One end of the high-pressure gas cylinder forms a puncture needle, and a first through hole is formed axially through the piercing member and the lancet, the first through hole communicates with the vent valve, one end of the gas recovery channel communicates with the gas chamber, and the gas recovery The other end of the channel communicates with the first perforation of the positioning structure, the air chamber is combined with the negative pressure device; and the outer wall surface of one end of the hand-turned breaking cover is surrounded by an external thread, and the above-mentioned outer wall surface is sleeved with a rubber ring. A recovery air hole is radially pierced through the external thread, and one end of the hand-turned breaking cap is tapered to form a spinner portion, and a second through hole is axially penetrated in the center of the spinner portion, and the second through hole communicates with the recovery air hole. The hand-turned breaking cap is screwed on the positioning structure and pushes against the high-pressure gas cylinder to move toward the piercing piece, so that the spin part pierces one of the breaking surfaces of the high-pressure gas cylinder, and at the same time, the piercing piece The puncture needle punctures the other broken surface of the high-pressure gas cylinder, the rubber ring of the hand-turned broken cover is attached to the outer wall of the nail gun body, and the second through hole communicates with the recovery air hole, and then the The recovery air hole communicates with the first through hole.

By virtue of the above structure, the present invention has the following advantages:

1. Portability improvement: By installing the high-pressure gas cylinder in the nail gun body, the nail gun body no longer needs to be connected to the air duct, and there is no need to prepare an air compressor, which can improve the portability of the nail gun body. In addition, there is no danger of tripping over the air duct during use, and there is no need to store or take out the air duct, which further simplifies the cumbersome work process for users.

2. Gas can be recycled: through the setting of the gas circulation structure, the gas inside the high-pressure gas cylinder can be recycled and repeatedly circulated in the gas circulation structure, so as to prolong the use time of the high-pressure gas cylinder.

3. Improvement of safety: the safety card set on the nail gun body, when not in use, only need to pull the safety card on the displacement path of the trigger to avoid accidental contact with the trigger. The possibility of firing nails from the nail gun body improves the overall safety of the nail gun body.

4. Reduce air leakage: The hand-turned breakout cover is further equipped with the rubber ring, which is attached to the outer wall of the nail gun body corresponding to the positioning structure, which can prevent gas from leaking from the positioning structure.

Regarding the techniques, means and effects adopted in the present invention, preferred embodiments are given and described in detail in conjunction with the drawings. It is believed that the above-mentioned purpose, structure and characteristics of the present invention should be able to gain a deep and specific understanding therefrom.

〔this invention〕

10:Nail gun body

101: Grip

11: Positioning structure

111: First piercing

112: Second perforation

113: internal thread

12: Trigger

13: Security card arrival

20: Gas circulation structure

21: air chamber

22: Negative pressure device

23: Gas launch channel

24: Gas recovery channel

25: Fastening parts

26: High pressure cylinder

261: break surface

27: Piercing parts

271: Lancet

272: The first through hole

28: Vent valve

281: putter

282:Accommodating space

283: Air Blocking Department

29:Elastic structure

30: nail structure

31: Cylinder

32: Piston

33: striker

40: nail structure

50: push nail structure

60:Hand-turned breaking cover

61: external thread

62: spinneret

63: Second through hole

64: rubber ring

65: Recycling stomata

A: Partial structure of circle selection

B: Circled partial structure

〔usual〕

70:Pneumatic nail gun

72: Duct

74: Air compressor

[FIG. 1] is a schematic perspective view of the present invention in cross section.

[Fig. 2] is a schematic diagram of the hand-turned breaking cap of the present invention before being screwed into the positioning structure.

[Fig. 3] is a schematic diagram of the action of the hand-turned breaking cap of the present invention after it is screwed into the positioning structure.

[Fig. 4] is an enlarged schematic diagram of part A of [Fig. 3].

[Fig. 5] is an enlarged schematic view of part B of [Fig. 3].

[FIG. 6] is a schematic diagram of the safety card abutting part of the present invention being abutted against the trigger.

[FIG. 7] is a schematic diagram of the action of the safety locking element of the present invention that is not locked against the trigger after being pulled.

[Fig. 8] is a schematic diagram of the action of pressing the push rod after the trigger of the present invention is pulled.

[Fig. 9] is a schematic diagram of the direction of gas flow after the high-pressure gas cylinder of the present invention releases gas.

[FIG. 10] is a partial cross-sectional schematic diagram of a conventional pneumatic nail gun connected to an air compressor through an air duct.

Referring to FIG. 1 , the present invention discloses a wireless pneumatic nail gun. A gas circulation structure 20 is provided inside a nail gun body 10 , and a trigger 12 and a safety card are pivotally arranged on the outer wall of the nail gun body 10 corresponding to a handle 101 Abutment 13, the safety card abutment 13 is located on the displacement path of the trigger 12; the gas circulation structure 20 includes a gas chamber 21, a negative pressure device 22, a gas emission channel 23, a gas recovery channel 24, and a vent valve 28 , a piercing member 27, at least one engaging member 25 and a high-pressure gas cylinder 26, the engaging member 25 is fixed on the inner wall surface corresponding to the handle 101, the engaging member 25 is engaged with the high-pressure gas cylinder 26, The two ends of the high-pressure gas cylinder 26 are respectively provided with a breaking surface 261, one end of the gas launching channel 23 communicates with the gas chamber 21, and the other end of the gas launching channel 23 is combined with the vent valve 28, and the vent valve 28 is extended with a push rod 281, One end of the push rod 281 is located on the displacement path of the trigger 12 , one end of the gas recovery channel 24 communicates with the air chamber 21 , and the air chamber 21 is combined with the negative pressure device 22 .

Continuing to refer to FIG. 1, the nail gun body 10 further includes a nail driving structure 30, a nail ejecting structure 40 and a nail pushing structure 50. The nail driving structure 30 includes a cylinder 31, a piston 32 and a firing pin 33. The piston 32 and the striker 33 are housed inside the cylinder 31. One side of the piston 32 is against one end of the air chamber 21, and the other side of the piston 32 is fixed with the striker 33. Both ends of the nailing structure 30 are respectively connected to the air chamber 21. And the nail output structure 40, the nail output structure 40 is vertically arranged with the nail pushing structure 50.

Referring to Fig. 2 and Fig. 3 together with Fig. 1, it is disclosed that the nail gun body 10 has a positioning structure 11 protruding from the inner wall corresponding to the handle 101, and a first through hole 111 is formed axially through the positioning structure 11. An internal thread 113 is formed on the inner wall of the perforation 111, which penetrates radially through the side wall of the positioning structure 11. A second perforation 112, the second perforation 112 communicates with the first perforation 111, the vent valve 28 is provided with the piercing member 27 toward one end of the high-pressure gas cylinder 26, and the piercing member 27 is disposed toward one end of the high-pressure gas cylinder 26 A puncture needle 271 is formed, and a first through hole 272 is formed axially through the piercing member 27 and the puncture needle 271. The first through hole 272 communicates with the vent valve 28, and the other end of the gas recovery channel 24 communicates with the positioning structure 11. The first perforation 111; the ventilation valve 28 inside forms an accommodating space 282, and the two sides of the accommodating space 282 respectively communicate with the first through hole 272 of the piercing member 27 and the gas emission channel 23, and the push rod 281 One end is provided with an air blocking part 283, the height of the air blocking part 283 is less than or equal to 1/2 of the height of the accommodating space 282, the air blocking part 283 is located in the accommodating space 282, and one side of the air blocking part 283 It is attached to the accommodating space 282 connected to the side of the piercing member 27, and the side of the air blocking part 283 that is different from the push rod 281 is attached to one end of an elastic structure 29, and the other end of the elastic structure 29 is attached to it. On the inner wall of the accommodating space 282 , an external thread 61 is set on the outer wall of one end of the hand-turned breaking cover 60 , and a rubber ring 64 is sleeved on the outer wall, and a recovery air hole is radially set on the external thread 61 65, the hand-turned breaking cover 60 tapers at one end to form a spinner portion 62, and a second through hole 63 is formed axially in the center of the spinner portion 62, and the second through hole 63 communicates with the recovery air hole 65. The type breaking cover 60 is screwed on the positioning structure 11 and pushes against the high-pressure gas cylinder 26 to move toward the piercing member 27, so that the spin part 62 punctures one of the breaking surfaces 261 of the high-pressure gas cylinder 26, and at the same time The piercing needle 271 of the piercing member 27 punctures the other breaking surface 261 of the high-pressure gas cylinder 26, and the rubber ring 64 of the hand-turning breaking cover 60 is attached to the outer wall of the nail gun body 10, and The second through hole 63 communicates with the recovery air hole 65 , and the recovery air hole 65 communicates with the first through hole 111 .

Referring to Fig. 4 together with Fig. 2 and Fig. 3, after the external thread 61 of the hand-turning breaking cap 60 is rotatably combined with the internal thread 113 of the positioning structure 11, the spin part 62 will pierce the high-pressure gas cylinder 26 One of them should break the surface 261 .

Referring to Fig. 5 together with Fig. 2 and Fig. 3 , when the hand-turned breaking cap 60 is screwed in, the high-pressure gas cylinder 26 will be pushed, so that the high-pressure gas cylinder 26 will move toward the piercing member 27, and the piercing member 27 will The piercing needle 271 will pierce the other breaking surface 261 of the high-pressure gas cylinder 26 .

Referring to FIG. 6 together with FIG. 1 , it is disclosed that the safety locking member 13 is pivotally arranged on the outer wall of the handle 101 of the nail gun body 10, and the safety locking member 13 is located on the displacement path of the trigger 12, so that the The safety locking member 13 is stuck against the outer wall surface of the trigger 12, so that the trigger 12 cannot be displaced toward the direction of the push rod 281. At this time, the elastic structure 29 provided in the accommodating space 282 of the ventilation valve 28 It provides elastic force and pushes against the gas blocking portion 283 , so that the gas blocking portion 283 presses against the passage of the vent valve 28 communicating with the piercing member 27 , so that gas cannot flow into the vent valve 28 .

Referring to FIG. 7 , it is disclosed that the safety locking member 13 leaves the displacement path of the trigger 12 after being pushed, so that the trigger 12 can be displaced toward the direction of the push rod 281 .

Referring to FIG. 8 together with FIG. 7, the trigger 12 is displaced toward the direction of the push rod 281 after being stressed, and the push rod 281 pushes the air blocking part 283 and compresses the elastic structure 29, so that the air blocking part 283 is displaced under force. Afterwards, the gas inside the high-pressure gas bottle 26 can flow into the vent valve 28 through the first through hole 272 of the piercing needle 271 of the piercing member 27 .

Referring to Fig. 9 together with Figs. 1 to 3, it is disclosed that after the broken surfaces 261 of the high-pressure gas cylinder 26 are pierced, the gas in the high-pressure gas cylinder 26 will pass through the piercing needle 271 of the piercing member 27. The first through hole 272 flows into the vent valve 28, and then the gas flows from the vent valve 28 to the gas emission channel 23 and enters the gas chamber 21, and the gas in the gas chamber 21 will drive the piston 32 to push the striker 33, cooperate with the nail pushing structure 50 to push the nails to move towards the direction of the nail ejecting structure 40, so that the striker 33 can drive the nails from the nail pushing structure 50 out of the nail ejecting structure 40, and then the gas will flow from the gas The chamber 21 cooperates with the operation of the negative pressure device 22 to make the gas flow to the gas recovery channel 24, the The second through hole 112 of the positioning structure 11 and the second through hole 63 of the hand-turned breaking cap 60 can make the gas return to the inside of the high-pressure gas cylinder 26 to achieve the purpose of gas recovery and reuse, and prolong the high-pressure The usage time of gas cylinder 26.

It should be noted that the above-mentioned embodiments are only illustrative to illustrate the principles and effects of the present invention, and are not intended to limit the scope of the present invention. Anyone who is familiar with this technology can modify and change the embodiments without violating the technical principle and spirit of the present invention. Therefore, the protection scope of the present invention should be described in the scope of patent application described later.

10:Nail gun body

101: Grip

11: Positioning structure

112: Second perforation

12: Trigger

13: Security card arrival

20: Gas circulation structure

21: air chamber

22: Negative pressure device

23: Gas launch channel

24: Gas recovery channel

25: Fastening parts

26: High pressure cylinder

261: break surface

27: Piercing parts

271: Lancet

272: The first through hole

28: Vent valve

281: putter

282:Accommodating space

283: Air Blocking Department

29:Elastic structure

30: nail structure

31: Cylinder

32: Piston

33: striker

40: nail structure

50: push nail structure

60:Hand-turned breaking cover

63: Second through hole

64: rubber ring

65: Recycling stomata

Claims (5)

A cordless pneumatic nailer comprising: A nail gun body, with a gas circulation structure inside, a positioning structure protruding from the inner wall surface of the nail gun body corresponding to a handle, a first perforation is formed axially through the positioning structure, and the inner wall of the first perforation forms a An internal thread radially passes through a second perforation on the side wall of the positioning structure, and the second perforation communicates with the first perforation. The outer wall of the handle is pivotally provided with a trigger and a safety catch, and the safety catch is The part is located on the trigger displacement path; The gas circulation structure includes an air chamber, a negative pressure device, a gas emission channel, a gas recovery channel, a vent valve, a piercing piece, at least one engaging element and a high-pressure gas cylinder, and the engaging element is fixed on the Corresponding to the inner wall surface of the handle, the high-pressure gas cylinder is clamped by the engaging part, and a breaking surface is respectively provided at both ends of the high-pressure gas cylinder. valve, the vent valve is provided with the puncturing piece at one end facing the high-pressure gas cylinder, a puncturing needle is formed at the end of the puncturing piece facing the high-pressure gas cylinder, a first through hole is axially penetrated between the puncturing piece and the puncturing needle, The first through hole communicates with the ventilation valve, one end of the gas recovery passage communicates with the air chamber, the other end of the gas recovery passage communicates with the first through hole of the positioning structure, and the air chamber is combined with the negative pressure device; and An external thread is provided on the outer wall surface of one end of a hand-turned breaking cover, and a rubber ring is sleeved on the above-mentioned outer wall surface, and a recovery air hole is radially set through the external thread, and the hand-turning breaking cover tapers at one end to form a spiral A second through hole is formed axially in the center of the spinner part, and the second through hole communicates with the recovery air hole. The hand-turned breaking cap is screwed on the positioning structure and pushed against the high-pressure gas cylinder toward the piercing member. Move in the direction of the high-pressure gas cylinder, so that the spinner pierces one of the burst surfaces of the high-pressure gas cylinder, and at the same time, the piercing needle of the piercing member pierces the other burst surface of the high-pressure gas cylinder, and the hand-turned burst cap The rubber ring is attached to the outer wall of the nail gun body, and the second through hole communicates with the recovery air hole, and the recovery air hole communicates with the first through hole. The wireless pneumatic nail gun according to claim 1, wherein the breather valve is extended with a push rod, and one end of the push rod is located on the trigger displacement path. The wireless pneumatic nail gun according to claim 2, wherein an accommodating space is formed inside the ventilation valve, and the two sides of the accommodating space are respectively connected to the first through hole of the piercing member and the gas emission channel, and one end of the push rod is set An air blocking part, the height of the air blocking part is less than or equal to 1/2 of the height of the accommodating space, the air blocking part is located in the accommodating space, and one side of the air blocking part is attached to the The accommodating space communicates with one side of the piercing member, and the side of the air-blocking portion that is different from the push rod abuts against one end of an elastic structure, and the other end of the elastic structure abuts against the inner wall of the accommodating space. The wireless pneumatic nail gun as in claim 2 or 3, wherein the nail gun body further includes a nail driving structure, a nail output structure and a nail pushing structure, and the two ends of the nail driving structure are connected to the air chamber and the output nail respectively. Nail structure, the nail output structure is perpendicular to the nail push structure, and the nail push structure pushes the nail to move towards the direction of the nail output structure. Such as the wireless pneumatic nail gun of claim 4, wherein the nailing structure includes a cylinder, a piston and a firing pin, the piston and the firing pin are housed in the cylinder, one side of the piston is against one end of the air chamber, and the piston is in addition The striker is fixed on one side.

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