CN112792788A - Pneumatic nail gun - Google Patents
Pneumatic nail gun Download PDFInfo
- Publication number
- CN112792788A CN112792788A CN202110132257.2A CN202110132257A CN112792788A CN 112792788 A CN112792788 A CN 112792788A CN 202110132257 A CN202110132257 A CN 202110132257A CN 112792788 A CN112792788 A CN 112792788A
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- switch
- valve
- connecting rod
- gas
- channel
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- 238000007789 sealing Methods 0.000 claims abstract description 41
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C1/00—Hand-held nailing tools; Nail feeding devices
- B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles (AREA)
Abstract
The invention relates to a pneumatic nail gun. The valve structure comprises a switch connecting rod, a front valve body, a front valve seat and a switch valve core which are arranged at the front end of the switch connecting rod, and a rear valve body opening and switch reset spring which is arranged at the rear end of the switch connecting rod. The front valve seat is fixedly arranged at the front end of the valve channel, the front valve body is fixedly arranged in the valve channel, the front valve body is positioned at the rear end of the front valve seat, the switch valve core is movably arranged in the front valve seat body, the front end of the switch connecting rod is inserted into the front valve seat body, and the front end of the switch connecting rod is in sealing fit with the front valve seat. The invention has simple and reasonable structure design, the valve core of the switch only needs to slightly move a small distance to ensure that the main air source can enter the power cavity, then the pressure of the main air source is used for driving the switch connecting rod to move, the valve core of the switch can be kept still only by small force, the sealing of each sealing ring at the corner is changed into the sealing of the inner surface, and the sealing effect is good.
Description
Technical Field
The invention relates to a pneumatic nail gun.
Background
The existing pneumatic nail gun comprises a gun body 1, a valve structure 2 and a trigger assembly, wherein a valve channel 4 is arranged in the gun body 1, the valve structure 2 is arranged in the valve channel 4, a main gas source channel 5, a first gas port 6 and a second gas port 7 are further arranged in the gun body, the valve structure moves in the valve channel, so that the main gas source channel is respectively communicated with the first gas port and the second gas port alternately, and the valve structure 2 comprises a switch connecting rod 20, a switch valve core 21 and a switch reset spring 22. As shown in fig. 1, when the switch valve core is driven by the trigger assembly, the switch valve core needs to overcome the force of the switch return spring and the main air source acting on the switch connecting rod, the movement stroke of the switch valve core is long, the force for pulling the trigger assembly needs to be large, and the trigger assembly needs to continuously use large force to keep the switch valve core still.
Disclosure of Invention
Accordingly, an object of the present invention is to provide a pneumatic nail gun in which a movement stroke of a switch valve body is short and a pressure of a main gas source is used to drive a switch link to move.
The object of the invention is thus achieved.
The utility model provides a pneumatic nail gun, includes the rifle body, valve structure and trigger subassembly, the internal valve passageway that is equipped with of rifle, in valve structure located the valve passageway, still be equipped with main gas source passageway, first gas port and second gas port in the rifle body, valve structure includes the switch connecting rod, establishes preceding valve body, preceding disk seat and the switch case at switch connecting rod front end, establishes the back valve body opening and the switch reset spring at switch connecting rod rear end.
The front valve seat is fixedly arranged at the front end of the valve channel, the front valve body is fixedly arranged in the valve channel, the front valve body is positioned at the rear end of the front valve seat, the switch valve core is movably arranged in the front valve seat body, the front end of the switch connecting rod is inserted into the front valve seat body, and the front end of the switch connecting rod is in sealing fit with the front valve seat.
The switch connecting rod is provided with an air inlet corresponding to the position of the main air source channel, an air channel is arranged in the switch connecting rod body and communicated with the air inlet, the air channel extends out of the front end part of the switch connecting rod all the time, the side wall of the front valve seat is provided with a communicated air channel which is communicated with the inner side and the outer side of the front valve seat, and an inlet of the communicated air channel is always positioned between the two end parts of the switch valve.
The front end of the switch connecting rod protrudes in the radial direction to form a circle of protrusion, the circumferential surface of the protrusion is in sealing fit with the inner surface of the front valve body, the protrusion is limited in the front valve body by the front valve seat, and the protrusion moves in the front valve body for a distance which just realizes the alternate conduction of the main gas source channel with the first gas port and the second gas port respectively.
The gap between the front end face of the protrusion and the inlet of the communicating air passage is a power cavity, the power cavity is communicated with the cavity at the rear end of the switch valve core after the switch valve core is driven by the trigger assembly, the power cavity and the front end of the switch valve core form sealing, gas in the main gas source channel enters the power cavity, so that the switch connecting rod is pushed to move towards the rear end, and the main gas source channel is communicated with the second gas port.
After the switch valve core loses the pressure of the trigger component, the switch valve core is pushed by gas in the gas channel to move towards the front end, the rear end of the switch valve core seals the power cavity and the rear end cavity of the switch valve core, the power cavity is communicated with the outside of the gun body through the front end of the switch valve core, the switch connecting rod moves towards the front end under the action of the switch reset spring, and the main gas source channel is communicated with the first gas port.
The above technical solution can be further described in detail as follows.
The internal first exhaust passage that is equipped with of switch connecting rod that first gas port corresponds, the rifle body still is equipped with first exhaust port, and when the switch connecting rod removed toward the rear end, the switch connecting rod separated with preceding valve body rear end, and first exhaust passage switches on first gas port and first exhaust port, and the switch connecting rod removed toward the front end, and the switch connecting rod is sealed with preceding valve body rear end, and first exhaust passage is closed.
The rear valve body is provided with a second exhaust port, the second exhaust port is cut off from being communicated with the second air port when the switch connecting rod is inserted into the rear valve body, the switch connecting rod leaves the rear valve body when the switch connecting rod is reset under the action of the switch reset spring, and the second exhaust port is communicated with the second air port.
The rear end face of the front valve seat is matched with the front end face of the protrusion in a concave-convex mode.
The invention has simple and reasonable structure design, the valve core of the switch only needs to slightly move a small distance to ensure that the main air source can enter the power cavity, then the pressure of the main air source is used for driving the switch connecting rod to move, the valve core of the switch can be kept still only by small force, the sealing of each sealing ring at the corner is changed into the sealing of the inner surface, and the sealing effect is good.
Drawings
Fig. 1 is a schematic diagram of a prior art structure, in which a pre-start-up state is shown.
FIG. 2 is a schematic structural view of the embodiment, showing a state before the pneumatic nail gun is used.
Fig. 3 is a schematic structural view of the valve according to the embodiment, which is in a state before use.
Fig. 4 is a schematic structural diagram of the valve according to the embodiment, which is in a use state.
Fig. 5 is a schematic rear end view of the front seat.
Detailed Description
The invention is further described in detail below with reference to the figures and examples.
Embodiments referring to fig. 2 to 5, a pneumatic nail gun includes a gun body 1, a valve structure 2, and a trigger assembly. The trigger assembly may be the trigger 3 itself, or may be a pneumatic piston type trigger or other trigger structure that can be automatically activated, in this embodiment a trigger.
The gun body 1 is internally provided with a valve channel 4, the valve structure 2 is arranged in the valve channel 4, and the gun body 1 is also internally provided with a main gas source channel 5, a first gas port 6, a second gas port 7 and a first exhaust port 8.
The valve structure 2 comprises a switch connecting rod 9, a front valve body 10, a front valve seat 11 and a switch valve core 12 which are arranged at the front end of the switch connecting rod, and a rear valve body 13 and a switch return spring 14 which are arranged at the rear end of the switch connecting rod.
Preceding disk seat 11 sets firmly in valve passageway front end, and preceding valve body 10 sets firmly in the valve passageway, and preceding valve body is located preceding disk seat rear end, is equipped with first sealing washer 14 between preceding valve body 10 and the preceding disk seat 11.
The switch valve core 12 is movably arranged in the front valve seat 11, the front end and the rear end of the switch valve core 12 are respectively sleeved with a second sealing ring 15 and a third sealing ring 16, and the switch valve core moves towards the rear end under the driving of the trigger 3.
The front end of a switch connecting rod 9 is inserted into a front valve body 10, the front end part of the switch connecting rod is inserted into a front valve seat 11, the front end part of the switch connecting rod is in sealing fit with the front valve seat, and a fourth sealing ring 17 is arranged between the switch connecting rod and the rear end of the front valve seat. The middle position of the switch connecting rod 9 is provided with an air inlet 18 corresponding to the position of the main air source channel 5, an air channel 19 is arranged in the switch connecting rod body, the air channel 19 is communicated with the air inlet 18, the air channel 18 extends out of the front end of the switch connecting rod 9 all the time, the side wall of the front valve seat 11 is provided with a communicating air channel 20, the communicating air channel 20 is communicated with the inner side and the outer side of the front valve seat, an inlet 21 of the communicating air channel is located between the two ends of the switch valve core 12 all the time, when the switch valve core is not driven by a trigger, a third sealing ring seals a power cavity and a.
The front end of the switch connecting rod protrudes a circle of protrusion 22 along the radial direction, a fifth sealing ring 23 is arranged between the circumferential surface of the protrusion 22 and the inner surface of the front valve body, the protrusion 22 is limited in the front valve body by the front valve seat 11, the rear end surface of the front valve seat is matched with the front end surface of the protrusion in a concave-convex manner, a concave-convex groove (see fig. 5) is arranged on the rear end surface of the front valve seat 11 in the embodiment, and a gap is mainly reserved between the rear end surface of the front valve seat and the.
The gap between the front end face of the protrusion 22 and the inlet of the communicating air channel 20 is a power cavity 230, after the switch valve core is driven by a trigger, the power cavity 230 is communicated with the cavity at the rear end of the switch valve core, the channel communicated with the outside of the gun body of the power cavity is sealed by a second sealing ring, and the gas in the main gas source channel enters the power cavity, so that the protrusion is pushed to move towards the rear end, the switch connecting rod also moves towards the end, and the distance of the protrusion moving in the front valve body just realizes the alternate conduction of the main gas source channel with the first gas port and the second gas port respectively.
In order to form sealing with two sides of the first air port, a sixth sealing ring 24 and a seventh sealing ring 25 are sleeved on the corresponding switch connecting rod, a first exhaust channel 26 is further arranged in the front end body of the switch connecting rod 9, and the first exhaust channel 26 is communicated with the first air port 8 and the first air port 6.
The rear valve body 13 is fixedly arranged at the rear end of the valve channel, the switch reset spring 14 is arranged in the rear valve body 13, the rear end of the switch connecting rod 9 is sleeved with an eighth sealing ring 27 and a ninth sealing ring 28, and the eighth sealing ring and the ninth sealing ring are respectively sealed with two sides of the second air port 7. The tail end of the switch connecting rod is connected with a switch return spring, the ninth sealing ring is in sealing fit with the rear valve body, and a second exhaust port 29 is formed in the side wall of the tail end of the rear valve body 13.
The working process of this embodiment will be described below with reference to fig. 3 and 4, referring to fig. 3, the switch valve core is in an unpressed state, the switch return spring pushes the switch connecting rod to the front end, the main gas source channel admits air, the seventh sealing ring leaves the left side of the first air port, the air enters the first air port, the main gas source channel is conducted with the first air port at this time, the air in the main gas source channel simultaneously enters the air inlet 18, the first air port admits air towards the rear end of the air cylinder 30, the front end of the air cylinder 30 is conducted with the second air port, because the ninth sealing ring leaves the rear valve body, the second air outlet exhausts air, and the piston 31 moves towards the front.
See fig. 4, the switch case is driven by the trigger to move towards the rear end, the third sealing ring loses the sealing between the pair of switch case and the rear valve seat, gas enters the communicating air channel and then enters the power cavity, the gas pushes the protrusion to move towards the rear end, the switch connecting rod moves towards the rear end, the seventh sealing ring is sealed, the sixth sealing ring loses the sealing, the first air port loses the air leakage towards the first exhaust channel and the first exhaust port, and the rear end of the air cylinder loses the pressure. The eighth sealing ring loses sealing, the main gas source channel is communicated with the second gas port, the ninth sealing ring seals the switch connecting rod and the rear valve body, the second gas outlet is closed, and gas in the main gas source channel enters the front end of the cylinder through the second gas port and pushes the piston backwards. This embodiment repeats this operation.
The invention improves the structure part of the valve, and the structure of the cylinder part belongs to the prior art.
Claims (4)
1. The utility model provides a pneumatic nail rifle, includes the rifle body, valve structure and trigger subassembly, the internal valve passageway that is equipped with of rifle, in valve structure located the valve passageway, still was equipped with main gas channel, first gas port and second gas port, its characterized in that in the rifle body: the valve structure comprises a switch connecting rod, a front valve body, a front valve seat and a switch valve core which are arranged at the front end of the switch connecting rod, and a rear valve body switch and a switch reset spring which are arranged at the rear end of the switch connecting rod;
the front valve seat is fixedly arranged at the front end of the valve channel, the front valve body is fixedly arranged in the valve channel, the front valve body is positioned at the rear end of the front valve seat, the switch valve core is movably arranged in the front valve seat body, the front end of the switch connecting rod is inserted into the front valve seat body, and the front end of the switch connecting rod is in sealing fit with the front valve seat;
the position of the switch connecting rod corresponding to the main gas source channel is provided with a gas inlet, a gas channel is arranged in the switch connecting rod body and is communicated with the gas inlet, the gas channel extends out of the front end part of the switch connecting rod all the time, the side wall of the front valve seat is provided with a communicated gas channel which is communicated with the inner side and the outer side of the front valve seat, and an inlet of the communicated gas channel is always positioned between the two end parts of the switch;
the front end of the switch connecting rod protrudes a circle of bulges along the radial direction, the circumferential surface of the bulges is in sealing fit with the inner surface of the front valve body, the bulges are limited in the front valve body by the front valve seat, and the distance of the bulges moving in the front valve body just realizes the alternate conduction of the main gas source channel with the first gas port and the second gas port respectively;
the gap between the front end surface of the protrusion and the inlet of the communicating air passage is a power cavity, after the switch valve core is driven by the trigger assembly, the power cavity is communicated with the cavity at the rear end of the switch valve core, the power cavity and the front end of the switch valve core form a seal, gas in the main gas source channel enters the power cavity so as to push the switch connecting rod to move towards the rear end, and the main gas source channel is communicated with the second gas port;
after the switch valve core loses the pressure of the trigger component, the switch valve core is pushed by gas in the gas channel to move towards the front end, the rear end of the switch valve core seals the power cavity and the rear end cavity of the switch valve core, the power cavity is communicated with the outside of the gun body through the front end of the switch valve core, the switch connecting rod moves towards the front end under the action of the switch reset spring, and the main gas source channel is communicated with the first gas port.
2. The pneumatic nail gun as claimed in claim 1, wherein a first exhaust passage is provided in the body of the switch link corresponding to the first port, the gun body further has a first exhaust port, the switch link is separated from the rear end of the front valve body when the switch link moves toward the rear end, the first exhaust passage conducts the first exhaust port and the first exhaust port, the switch link moves toward the front end, the switch link seals the rear end of the front valve body, and the first exhaust passage is closed.
3. The pneumatic nail gun as claimed in claim 1, wherein the rear valve body is provided with a second exhaust port, the second exhaust port is disconnected from the second gas port when the switch link is inserted into the rear valve body, and the second exhaust port is connected to the second gas port when the switch link is reset by the switch reset spring.
4. The pneumatic nail gun as claimed in claim 1, wherein the rear end face of the front valve seat and the front end face of the protrusion are in concave-convex fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110132257.2A CN112792788B (en) | 2021-01-31 | Pneumatic nailing gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110132257.2A CN112792788B (en) | 2021-01-31 | Pneumatic nailing gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112792788A true CN112792788A (en) | 2021-05-14 |
| CN112792788B CN112792788B (en) | 2024-07-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI778629B (en) * | 2021-05-19 | 2022-09-21 | 永大霖企業股份有限公司 | Nailer for improved firing stability |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB606570A (en) * | 1945-05-14 | 1948-08-17 | Eric Herbert Scovell | An improved air-operated grease gun |
| US5370037A (en) * | 1992-12-02 | 1994-12-06 | Bauer; Joachim | Control valve means |
| CN203221042U (en) * | 2013-04-28 | 2013-10-02 | 邓启文 | Air water dual-purpose dust blowing gun |
| TWM490947U (en) * | 2014-04-23 | 2014-12-01 | Everwin Pneumatic Corp | Air valve structure of pneumatic gun |
| CN208826548U (en) * | 2018-10-25 | 2019-05-07 | 浙江荣鹏气动工具有限公司 | A kind of switch assembly on pneumatic nail gun |
| CN111515904A (en) * | 2020-02-13 | 2020-08-11 | 广东美特机械有限公司 | Exhaust switch device of pneumatic nail gun |
| CN214238031U (en) * | 2021-01-31 | 2021-09-21 | 广东明晖气动科技有限公司 | Pneumatic nail gun |
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB606570A (en) * | 1945-05-14 | 1948-08-17 | Eric Herbert Scovell | An improved air-operated grease gun |
| US5370037A (en) * | 1992-12-02 | 1994-12-06 | Bauer; Joachim | Control valve means |
| CN203221042U (en) * | 2013-04-28 | 2013-10-02 | 邓启文 | Air water dual-purpose dust blowing gun |
| TWM490947U (en) * | 2014-04-23 | 2014-12-01 | Everwin Pneumatic Corp | Air valve structure of pneumatic gun |
| CN208826548U (en) * | 2018-10-25 | 2019-05-07 | 浙江荣鹏气动工具有限公司 | A kind of switch assembly on pneumatic nail gun |
| CN111515904A (en) * | 2020-02-13 | 2020-08-11 | 广东美特机械有限公司 | Exhaust switch device of pneumatic nail gun |
| CN214238031U (en) * | 2021-01-31 | 2021-09-21 | 广东明晖气动科技有限公司 | Pneumatic nail gun |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI778629B (en) * | 2021-05-19 | 2022-09-21 | 永大霖企業股份有限公司 | Nailer for improved firing stability |
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| PB01 | Publication | ||
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| CB02 | Change of applicant information |
Address after: 528300 Room 501, building 7, Huakang building, No. 1, Keji fifth road, Xingtan Industrial Zone, Qixing community, Xingtan town, Shunde District, Foshan City, Guangdong Province (residence declaration) Applicant after: GUANGDONG MINGHUI PNEUMATIC TECHNOLOGY Co.,Ltd. Address before: 528300 Minghui Pneumatic Technology Co., Ltd., Liandu Industrial Zone, Leliu Town, Shunde District, Foshan City, Guangdong Province Applicant before: GUANGDONG MINGHUI PNEUMATIC TECHNOLOGY Co.,Ltd. |
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