WO2009079829A1

WO2009079829A1 - An aerosol container of the nail gun and the filling method therefore

Info

Publication number: WO2009079829A1
Application number: PCT/CN2007/003650
Authority: WO
Inventors: Yuhong Chen
Original assignee: Yuhong Chen
Priority date: 2007-12-18
Filing date: 2007-12-18
Publication date: 2009-07-02
Also published as: AU2007362967B2; CN101883726B; CN101883726A; AU2007362967A1

Abstract

An aerosol container of the nail gun includes a container body, a valve body (3), a valve core (5), a sealing ring (4) and an elastic piece (8). The upper end of the valve body (3) is flush mounted in the container body. The lower end of the valve body (3) is in tight connection with an inner bag (1). The valve core (5) is installed in the valve body (3). The upper end of the valve core (5) forms a tubular valve nozzle. An inner circumference B and an outer circumference A are manufactured on the upper end of the valve body (3), and the inner circumference B is lower than the outer circumference A. The lower end face of the sealing ring (4) abuts against the upper end of the inner circumference B, and the margin of the sealing ring (4) is contained in the outer circumference A. When the valve core (5) is in the first axial position, the upper necking section C and the lower necking section D is respectively located inside and out side of said boss, and the upper surface and the lower surface of the sealing ring (4) respectively abut closely to the boss and the inner circumference B; when the valve core (5) is in the second axial position, the upper necking section C locates on the opening of the boss, and the upper surface of the sealing ring (4) departs from the lower surface of the boss. Therefore, it's convenient to fill, and it's effective to prevent gas leakage.

Description

Nail gun aerosol can and filling method thereof

The present invention relates to a fuel containment vessel for fueling a fastener powered tool, and more particularly to a gun aerosol canister, and to a filling method therefor.

Background technique

Tools that drive fasteners with combustion power (such as nail guns) are widely used in many areas such as building decoration. A related description is found in U.S. Patent Nos. 4, 403, 722, 4, 4,347, 343, 4, 4, 837, 474, 5, 197, 646, and 5, 263, 439, respectively.

The above-described tool for burning a power-driven fastener requires the fuel-filled fuel container to supply fuel into the tool combustion chamber as a working medium through the output valve. A typical construction of such a fuel dispenser is disclosed in U.S. Patent No. 5,115,944, which is incorporated herein by reference to the entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire- The injection valve is engaged in the can lid and the nozzle extends out of the can lid; the inner bag is tightly sealed with the injection valve, and the can lid is fastened to the outer can. The outer tank and the inner bag contain pressurized propellant fuel, and the pressurized propellant fuel is poured into the outer tank and the inner bag before the tank lid and the outer tank are fastened and sealed, and then the tank lid is The outer tank is picked up and sealed tightly. Practice has proved that such a fuel dispenser has the following disadvantages: 1) First filling the external tank with pressurized propellant gas (usually a combustible gas substantially the same as the inner bag), and then the can lid and the outer tank buckle Sealed and tightened, the pressurized propellant gas is lost more, which increases the cost and causes pollution to the environment; 2) The inner bag and the output valve are difficult to be reliably sealed, which is easy to cause leakage.

In addition, the German patent DE 202 12 802 discloses an assembly consisting of a can lid, an output shooting valve and an inner bag. The inner bag of the assembly is combined with the lower valve body of the output valve by heat welding, the lower valve body and the upper valve body. The joint is sealed flat by a seal. Practice has proved that the assembly has the following disadvantages: 1) When filling, it is necessary to fill the external tank with pressurized propellant gas (usually the same combustible gas as the inner bag), and then the can lid and the outside The tank is picked up and sealed tightly, so the pressurized propellant gas is lost more, the cost increases and pollutes the environment; 2) The sealing of the lower valve body and the upper valve body is not ideal and is easy to leak.

Summary of the invention

The technical problem to be solved by the present invention is: In view of the shortcomings of the above prior art, a fuel-filled container which is convenient for filling and can effectively prevent air leakage is proposed, and a filling gun aerosol can is also provided, and the filling is also given. method. In order to solve the above technical problems, the nail gun aerosol can of the present invention includes

a tank body - consisting of a can lid and a cup cup flanged, the central portion of the can lid extending outwardly to form a central opening of the boss;

The upper end of the valve body is embedded in the boss, the lower end is sealingly connected with the inner bag located in the can body and has an air outlet communicating with the inner bag, and an air gap is left between the boss and the valve body;

a valve body is installed in the gantry, and an upper end forms a tubular valve mouth extending from the center opening of the boss, and the valve mouth is formed with upper and lower neck portions adjacent to the boss, the downsizing a small hole penetrating the side wall of the valve core is opened in the middle of the neck portion;

The sealing ring is tightly sleeved on the lower neck portion, and the lower end surface abuts against the upper end of the valve body;

Elastic members are installed one by one between the lower end of the valve core and the valve body;

The spool has a first (stationary), second (filling) and third (working) axial position; when in the first axial position, the elastic member is in a maximum extended state, the valve mouth The upper and lower neck portions are respectively located inside and outside the boss, and the upper and lower surfaces of the sealing ring respectively abut the lower surface of the boss and the upper end of the valve body to form a sealing structure; In the axial position, the elastic member is in a maximum compression state, the upper neck portion of the valve mouth is located at the boss opening, and the upper surface of the sealing ring is separated from the lower surface of the boss to form a valve a gap between the upper neck portion of the nozzle and the opening of the boss and an air gap formed between the boss and the valve body; when in the third axial position, the elastic member is in an intermediate compression state, the seal The periphery of the ring is kept in sealing contact with the lower surface of the boss, and is inwardly facing the bell mouth in contact with the lower neck portion of the valve mouth, forming an air outlet passage of the inner bag through the small hole to the valve mouth.

It is easy to understand that when the valve core is in the first axial position (resting position) under the action of the elastic member, the sealing ring can be reliably closed under the action of the upper end of the valve body to prevent leakage. When it is necessary to inject a pressurized propellant gas into the cavity between the body and the inner bag, press the valve core against the force of the elastic member to make it in the second axial position (filling position), on the wide mouth The neck portion is formed at the opening of the boss to form a slit, and the upper surface of the sealing ring leaves the boss, forming a gap between the upper neck portion of the valve nozzle and the opening of the boss, and an air gap between the boss and the body and the valve body The upper end of the gap constitutes an air flow passage so that external compressed air can enter the cavity between the can body and the inner bag. In use, when the pressure is pressed against the elastic member to press the valve core to be in the third axial position (working position), the sealing ring sleeve is axially expanded from the bottom at an angle to form a slave valve. The air passage between the small hole and the inner bag can release the combustible gas in the inner bag, and the air gap between the lower surface of the valve body and the boss and the upper end of the valve body can be reliably closed in the process, so it is effective Prevent leaks.

According to a further improvement of the present invention, the upper end of the valve body is formed with two inner and outer circumferences, and the inner circumference is high. Lower than the outer periphery, the lower end surface of the sealing ring abuts against the upper end of the inner periphery, the edge is contained in the outer periphery; the outer periphery is radially formed with spaced-apart vent holes; when the valve core is in the In an axial position (resting position), the elastic member is in a maximum extended state, and the upper and lower neck portions of the valve mouth are respectively located in the boss, and the upper and lower surfaces of the sealing jaw are Adhering to the lower surface of the boss and the upper end surface of the inner periphery respectively; when the valve core is in the second axial position (filling position), the elastic member is in a maximum compression state, the valve mouth The upper neck portion is located at the boss opening, the upper surface of the sealing ring is away from the lower surface of the boss, and the lower surface of the sealing ring is kept close to the upper end surface of the inner periphery.

Therefore, when the valve core is in the first axial position (resting position) under the action of the elastic member force, the sealing ring can more securely close the air gap to prevent leakage under the pushing action of the upper end of the inner circumference; When the valve core is pressed down to be in the second axial position (filling position), the upper neck portion of the valve mouth is located at the opening of the boss to form a gap, and the sealing ring is in common with the neck portion and the inner periphery of the valve mouth. The warp deformation occurs under the action, and the upper surface leaves the boss to open the air gap, so that the external compressed air can be smoothly filled into the space between the tank and the inner bag.

According to a further refinement of the present invention, the upper end of the can end of the can lid is partially fixed by the plum-like contraction to fix the upper end of the valve body, and the air gap is formed between the boss and the valve body at intervals along the circular edge. In this way, the combination of the can lid and the valve body is facilitated, and the reliable fitting and fixing is ensured, and the ideal air flow passage is naturally formed, which is favorable for smooth filling.

DRAWINGS

The invention will now be further described with reference to the accompanying drawings.

1 is a schematic structural view of an embodiment of the present invention.

2 is a schematic enlarged view of the E-E cross section of FIG. 1.

Fig. 3 is a structural schematic view showing the state of the gas filling state of the embodiment of Fig. 1.

Figure 4 is a partial enlarged view of Figure 3.

FIG. 5 is a schematic structural view of the working state of the embodiment of FIG. 1. FIG. detailed description

Embodiment 1

The nail gun of the present embodiment is shown in Fig. 1. The can body is formed by the can lid 6 and the upper periphery of the cylindrical can cup 2 being crimped and filled with a sealing member 7. The central portion of the can lid 2 extends outward to form a center. The boss of the opening. The opening of the center of the boss forms an outwardly facing opening, and the upper end of the tubular valve body 3 is fixedly embedded in the boss, leaving Air gap. The lower end of the valve body 3 is pressed tightly with the lower portion of the valve body, and an air outlet hole communicating with the inside of the inner bag 1 is formed at the center, and the periphery is connected to the upper portion of the inner bag 1 located in the can body by a heat fusion seal. A valve body 5 which is vertically displaceable and thus has first, second and third axial positions is mounted in the valve body 3. An elastic member 8 (spring) is disposed between the lower end of the spool 5 and the valve body 3. The upper end of the valve core forms a tubular valve mouth extending from the center opening of the boss, and the valve mouth is formed with upper and lower neck portions C and D adjacent to the boss. A small hole F penetrating the side wall of the valve core is opened in the middle of the lower neck portion, and the outer circumference is tightly sealed with the cymbal 4. The upper end of the valve body 3 is formed with inner and outer circumferences A and B. The inner periphery B is formed to extend directly upward from the tubular valve body 3, and the outer periphery A is formed by extending the outer side of the upper end of the tubular valve body 3 and extending upward. The inner periphery B has an extended height lower than the outer periphery A. The outer periphery A is radially formed with spaced-apart vents E (see Fig. 4). The lower end surface of the seal ring 4 abuts against the upper end of the inner periphery B, and the edge is housed in the outer periphery A.

As shown in Fig. 2, the inner circumference of the boss of the can lid 6 is partially pressed inwardly to form a plum-like contraction, and the upper end of the valve body 3 is fitted and fixed, and a gas distributed along the circular edge between the boss and the valve body is formed. The gap, each air gap and the radially distributed vent hole E of the outer periphery A are respectively in communication with each other.

When the spool 5 is in the upward first axial position under the maximum extension of the elastic member 8, the upper and lower neck portions of the valve are respectively located in the boss, and the upper and lower surfaces of the sealing ring 4 are Adjacent to the lower surface of the boss and the upper end surface of the inner periphery, respectively, so that the inside and outside of the can is completely isolated (see Fig. 1).

When the spool is subjected to the pressing force, in the second axial position, when the elastic member 8 is at the maximum compression, the upper neck portion of the valve is located at the opening of the boss, and the upper surface of the sealing ring 4 is away from the lower surface of the boss. Therefore, the outer surface of the can is passed through the gap between the neck portion of the valve nozzle and the opening of the boss and the radially distributed vent hole E and air gap of the outer periphery A, and communicate with the space between the can body and the inner bag, which can be filled for required Compressed air (see Figure 3).

In use, when the valve core is pressed against the working force of the elastic member to make it in the working position shown in FIG. 5, the sealing ring of the tight ring is axially expanded from the bottom at an angle, that is, the sealing ring and the valve. The lower neck portion of the mouth is inwardly facing the bell mouth shape, thereby forming an air flow passage from the valve mouth through the small hole F to the inner bag, so that it can be assisted by the compressed air between the tank body and the inner bag. The flammable gas in the inner bag is released, and the air gap between the lower surface of the valve body and the boss and the upper end of the valve body is reliably closed during the process, thereby effectively preventing leakage.

Other than the above-described embodiments, the present invention may have other embodiments. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the present invention.

Claims

Claim

A nail gun aerosol canister comprising:

The can body is composed of a can lid and a cup cup flanged, and a central portion of the can lid extends outward to form a boss having a central opening;

The valve body has an upper end embedded in the boss, and a lower end sealingly connected with the inner bag located in the can body and having an air outlet communicating with the inner bag, and an air gap is left between the boss and the valve body;

a valve body is installed in the valve body, and an upper end forms a tubular valve mouth extending from a central opening of the boss, and the valve mouth is formed with upper and lower neck portions adjacent to the boss, the downsizing a small hole penetrating the side wall of the valve core is opened in the middle of the neck portion;

The spool has first, second and third axial positions; when in the first axial position, the elastic member is in a maximum extended state, and the upper and lower neck portions of the valve are respectively located at the Inside and outside the boss, the upper and lower surfaces of the sealing ring respectively abut the lower surface of the boss and the upper end of the valve body to form a sealing structure; when in the second axial position, the elastic member is at a maximum compression state, an upper neck portion of the valve mouth is located at the boss opening, and an upper surface of the sealing jaw is separated from a lower surface of the boss to form an upper neck portion and a boss opening of the valve nozzle a gap and an air flow passage formed by an air gap between the boss and the valve body; when in the third axial position, the elastic member is in an intermediate compression state, and the periphery of the seal ring is kept under the boss The surface sealing contact is inwardly facing the bell mouth in contact with the lower neck portion of the valve mouth, forming an air outlet passage of the inner bag through the small hole to the valve mouth.

2. The nail gun aerosol can according to claim 1, wherein: the upper end of the valve body is formed with inner and outer circumferences, and the inner circumference height is lower than the outer circumference, and the lower end surface of the sealing jaw Abutting against the upper end of the inner periphery, the edge is contained in the outer periphery; when the valve core is in the first axial position, the upper and lower surfaces of the sealing ring respectively abut the lower surface of the boss and the inner periphery An upper end surface; when the valve body is in the second axial position, the upper surface of the sealing ring is away from the lower surface of the boss, and the lower surface of the sealing jaw is kept close to the upper end surface of the inner periphery .

3. The nail gun aerosol can according to claim 1 or 2, wherein: the central boss of the can lid is partially fixed by the plum-like contraction to fix the upper end of the valve body, and the boss and the valve body are formed. Air gaps spaced along the edge of the circle.

4. The nail gun aerosol can according to claim 3, wherein: the outer periphery is radially provided with spaced-apart vent holes, and the spaced-apart air gaps are respectively radially outwardly distributed with the outer peripheral vent holes. Relatively connected.

5. The nail gun aerosol can according to claim 4, wherein: the valve body is tubular, the inner periphery is formed by the valve body extending upwardly, and the outer periphery is outside the upper end of the valve body. Expanded and extended upwards.

The nail gun aerosol can according to claim 5, wherein the lower end of the valve body is tightly sealed with the lower portion of the valve body, and the periphery is thermally sealed to the upper portion of the inner bag located in the can body.

7. The nail gun aerosol can according to claim 6, wherein: the opening in the center of the boss forms an outwardly facing stop.

8. The nail gun aerosol can according to claim 7, wherein: the can lid and the upper edge of the can lid are filled with a sealing member.

9. The method of filling a nail gun aerosol can according to claim 1, wherein: when it is necessary to inject a pressurized propellant gas into the cavity between the can body and the inner bag, the steps are as follows:

1), pressing the force of the elastic member to press the valve core to be in the second axial position;

2), the upper neck portion of the valve mouth is located at the opening of the boss to form a gap, and the upper surface of the sealing ring leaves the boss, forming a gap between the upper neck portion of the valve mouth and the opening of the boss, and the boss and the valve a gas flow passage formed by an air gap between the bodies;

3), the external pressurized propellant gas can enter the cavity between the can body and the inner bag by the air flow passage.