KR101206079B1 - Locking Structure of spray cans and spray gun - Google Patents

Abstract

PURPOSE: A combining structures of spray cans for painting and spray guns is provided to facilitate combination and separation of the spray cans for painting and spray guns. CONSTITUTION: A combining structures of spray cans for painting and spray guns comprises a spray gun(10), paint inlet nozzles(11), a fastening unit, a fastening bolt(20), an intermediate valve(30), an adaptor(40), a spray can(55), and a socket(50). The fastening unit is assembled with the inlet nozzle of the spray gun. The fastening unit is composed of the fastening bolt and the intermediate valve. In the spray can, the socket for combining with the fastening unit is formed. The spray can and the spray gun are coupled if the spray can is twisted after the adapter and the socket are combined. A collet is formed on the adapter. A cam is formed at the lower end of the intermediate valve. In the combining process of the spray gun and spray can, the collet is closely fixed to the inner surface of the outlet of the spray can by the cam. The intermediate valve opens and closes the paint inlet by pneumatic pressure of the spray gun as a check valve.

Description

Locking structure of spray cans and spray guns

The present invention relates to a fastening structure for coupling a spray can for painting, which is used for painting vehicles and wood, to a spray gun.

The paint spray can was developed to allow anyone to paint easily and conveniently in various places such as vehicles, wood, buildings, etc. In actual use, the spray liquid was uneven and the adsorption rate was low, which prevented precise painting.

In order to solve this problem, the 'injector' of the patent application utility model registration No. 20-0428831 provided an injector structure that sprays paint evenly by combining spray can and spray gun for painting. The method was not clearly presented, and when viewed through the accompanying drawings, there was no practical method because there was no way to separate the spray cans coupled by the locking protrusions on the inner wall of the housing.

In addition, since the intermediate valve attached to the connection unit must be opened and locked manually, if the spray can is removed without forgetting or inadvertently locking the intermediate valve, paint may be unexpectedly ejected into the paint inlet. In this case, it was necessary to automatically open and close the intermediate valve.

The present invention is to solve the above problems is to provide a coupling structure of the spray can and the spray gun for the coating is easy to combine and separate the spray can and spray gun for painting and automatic opening and closing of the intermediate valve.

The fastening structure for achieving the above object is exemplified by two types of fastening by retrofitting a conventional spray can for painting and using as it is.

The first type of fastening structure is to form a socket to easily attach and detach the spray can for painting.

This structure forms a similar socket in a spray can for painting as the socket is formed to fasten the torch lamp at the inlet of a conventional butane gas cylinder, and connects the socket to a fastening unit connected to the spray gun.

Also, when inserting the opening / closing lever of the intermediate valve into the socket groove formed in the socket, when the spray can is combined with or disconnected from the spray gun, the intermediate valve also opens and closes in conjunction with the spray gun. It has an additional structure to lock it.

The second type of fastening structure is provided with a fastening container composed of a top and bottom can put the spray can without modifying the structure of the spray can, but the container is provided with a fastening means that can easily combine and separate the upper and lower containers.

The fastening structure of the structure as described above is easy to attach and detach the spray can and spray gun for painting, there is an effect that can be used safely and usefully by opening and closing the intermediate valve automatically when detachable.

1: Schematic diagram of fastening spray can and spray gun with socket formed
2 is a perspective view of the adapter and the socket of the general fastening unit
3 is a cross-sectional view of a fastening unit in which the intermediate valve is composed of a check valve.
4: opening and closing operation of the intermediate valve using the socket
5 is a perspective view of the fastening of the spray can using the collet-type fastening unit
6: exploded view and operation of the collet-type fastening unit
7: Cross-sectional view of the collet-type fastening unit and the gate valve
8: Structure of fastening of the spray can and the spray gun using the fastening container

The structure for joining the spray can and the spray gun is divided into forming a socket in the spray can and fastening without the socket.

 When described with reference to the accompanying drawings the fastening structure as described above are as follows.

1 is a diagram illustrating a fastening structure of a spray can and a spray gun in which a socket is formed.

1 is a form of coupling the fastening unit having an adapter formed on the socket after forming a socket that is easily removable in the spray can as a fastening structure of the first aspect of the present invention.

Painting spray cans sold on the market in Korea are not configured with any means for connecting with external devices for painting purposes.

For example, in the case of the butane gas can, the socket 50 is formed on the outer circumference of the upper discharge port of the can so as to be easily installed in a torch lamp or a gas burner, but the coating spray can is not provided with any such coupling element.

Thus, in the present invention, to achieve the object by forming a socket 50 on the paint discharge port side to facilitate the connection to the external spray device for painting.

External device in the present invention is a spray gun 10, the fastening unit 100 is assembled to the spray gun to facilitate the coupling with the spray can.

The fastening unit 100 is an intermediate part for connecting the spray gun 10 and the spray can 55, as shown in the above figure.The fastening bolt 20, the bolt packing 25, and the intermediate valve 30 , Nozzle packing 35, adapter 40, and connection screw 42.

Hereinafter, for convenience of description and to distinguish the fastening unit from other types, the fastening unit is referred to as a general fastening unit according to the shape of the adapter.

Figure 2 is an external perspective view of the adapter and the socket of the general fastening unit.

The adapter 40 of the general fastening unit 100 is a component attached to the lower portion of the intermediate valve 30. A clasp 40-1 having an inwardly bent shape is formed at the bottom of the adapter and is coupled to the socket of the spray can. .

The socket 50 formed on the outer circumference of the upper discharge port of the spray can 55 for painting is formed with the socket groove 50-1 to lock when the latch 40-1 of the adapter 40 described above is inserted and turned. The number of socket grooves is one can for butane gas, but in this configuration, two or more slopes are preferably fastened at the same time.

As another form of the clasp and the socket groove, an L-shaped protruding clasp 40-2 is formed at the lower circumferential surface of the adapter as shown in the right figure of Fig. 2, and a protruding clasp is inserted into the socket portion. When turned, the socket hole 50-2 is locked.

As described above, the spray can for coating in which the socket 50 is formed can be easily attached and detached to the spray gun by the adapter 40 attached to the fastening unit 100.

3 is a cross-sectional view of a fastening unit in which the intermediate valve is composed of a check valve.

The intermediate valve of the fastening unit is an auxiliary device for preventing such a concern that the remaining amount of paint compressed in the spray gun may be ejected through the inlet nozzle 11 when the user removes the paint of the spray can without using up.

Despite the presence of an intermediate valve, the user may inadvertently or inadvertently remove the spray can without closing the valve.

If a check valve is configured in the fastening unit in preparation for such a sudden situation, the high-pressure residual paint remaining in the spray gun may not be ejected toward the inlet nozzle 11 and may be used with confidence.

3A is a cross-sectional view of the fastening unit in which the intermediate valve is composed of a check valve, and the operating state of the check valve S according to the air pressure is represented by the pictures of [B] and [C].

3B is an operation diagram of the check valve when the spray can is replaced or removed.

This figure shows the state in which the pate inlet is blocked by internal pressure the check ball 30-1 removes the spray can.

3C is an operation diagram of a check valve when spraying using a spray gun after replacing a spray can.

This figure shows the state in which the internal pressure drops when the spray gun is sprayed using the spray gun, and the check ball 30-1 is excited and the paint inlet is opened.

When the intermediate valve is configured as a check valve as described above, it may be safe even in unexpected unexpected situations, but since the check valve may not operate quickly due to the large paint viscosity, it may be necessary to open and close the intermediate valve artificially.

Therefore, the following relates to the automatic opening and closing structure of the intermediate valve, which artificially opens and closes the intermediate valve but must close the intermediate valve.

When the spray can is coupled to the fastening unit, the valve opens, and when the spray can is removed from the fastening unit, the valve is automatically closed using a socket formed in the spray can.

4 is an operation of opening and closing the intermediate valve using the socket.

The socket formed in the spray can for painting can be used to open and close the intermediate valve in addition to the adapter.

4A shows the shape of the adapter and the socket for automatically opening and closing the intermediate valve.

As shown in the figure, the adapter 40 and the socket 50 of the fastening unit are fastened by the protruding clasp 40-2 and the socket hole 50-2, and the socket groove 50-1 opens and closes the intermediate valve. It is used for opening and closing the intermediate valve by inserting the lever (30-2).

4B shows a socket groove (30-2) of the opening / closing lever 30-2 of the intermediate valve as the protruding latch 40-2 of the adapter is inserted into the socket hole 50-2 of the socket. This is the picture inserted in 50-1).

4 [C] shows that when the spray gun is turned to the left while the spray can is coupled with the fastening unit, the socket groove 50-1 also returns to the left side, and in conjunction with this, the opening and closing lever of the intermediate valve rotates clockwise to the middle. This is a state of opening the valve.

On the contrary, if you want to remove the spray can, turn the spray can to the right and the opening / closing lever of the intermediate valve will catch on the socket groove 50-1 and rotate counterclockwise to close the intermediate valve. It is separated from the hole 50-2 and separated.

The necessity of such a structure is to ensure that the intermediate valve closes even if the user inadvertently removes the spray can from the spray gun, such as a check valve, so that an unexpected paint spray accident does not occur.

Thus, the socket formed in the spray can may be used for opening and closing the intermediate valve of the fastening unit in addition to the purpose of fastening with the spray gun.

The following relates to a coupling structure using a collet type fastening unit, which is a second form of the fastening structure using a socket.

The collet type fastening unit replaces the adapter type 40 of the general type fastening unit with the collet type adapter 41. The collet 41-3 of the collet type adapter and the socket 50 of the spray can are used for the coupling. It is the inner side of the discharge port of the spray can.

5 is a perspective view of the fastening of the spray can using the collet-type fastening unit.

5A is a perspective view illustrating a coupling state between the collet-type fastening unit and the spray can. The collet 41-3 formed in the fastening unit is inserted into and coupled to the inner surface 55-3 of the discharge port of the spray can.

5B shows a state in which the collet is coupled to the inner side of the discharge port of the can while the collet lever 41-2 is inserted into the socket groove 50-1 of the socket formed in the can.

5 [C] is a view of a state in which the fastening is completed by rotating a predetermined angle clockwise in a state where the can and the collet are coupled, and the collet lever 41-2 inserted into the socket groove 50-1 is sprayed. It rotates clockwise in conjunction with the can and performs two functions inside the fastening unit.

The first function is to open the locked intermediate valve and the second function is to close the collet to the inner surface 55-3 of the discharge port to complete the tightening.

Looking at the operating structure inside the fastening unit for performing the two functions according to the rotation of the collet lever as follows.

Figure 6 is an exploded view and operation of the collet-type fastening unit.

The collet-type fastening unit forms an induction cam 30-3 at the lower end of the intermediate valve 30, and the collet-type adapter 41 is configured to rotate only a predetermined angle outside the induction cam.

A collet lever 41-2 is formed at the outer circumference of the collet adapter 41 and inserted into the socket groove 50-1 formed in the socket of the spray can, and a collet 41-3 is formed at the lower end of the collet adapter. Then, it is inserted into the discharge port inner surface 55-3 of the spray can and fixed tightly.

The first function of rotating the collet lever is to open the intermediate valve as it is engaged with the spray can and to close the intermediate valve when it is separated from the spray can.

The intermediate valve used in the collet-type fastening unit is advantageously a gate valve which is interlocked according to the horizontal rotation of the collet lever rather than a ball valve.

6B is an operation diagram of the gate valve, in which the ball valve opens and closes the valve while the ball rotates, but the gate valve opens and closes the valve as the gate moves horizontally.

As shown in the figure, when the collet lever 41-2 rotates clockwise together with the combined can, the protruding cam 41-1 formed on the inner circumferential surface of the collet adapter 41 rotates, and the gate blocking the paint duct. 32 is pushed by the spring to open the paint duct.

On the contrary, when the can is rotated counterclockwise to remove the spray can, the collet lever also rotates counterclockwise to close the gate valve.

6C is an operation diagram of the collet. When the collet lever 41-2 rotates clockwise with the can, the collet 41-3 is also formed integrally therewith and rotates together with the intermediate valve. Inflated by the protruding portion of the induction cam (30-3) formed, the expanded collet is in close contact with the inner surface 55-3 of the discharge port of the spray can to complete the fastening.

7 is an operation sectional view of the collet-type fastening unit and the gate valve.

7A shows a state in which the collet lever is not rotated after being inserted into the socket groove, and the gate valve is closed and the collet 41-3 is inflated.

7B shows the collet lever being inserted into the socket groove and rotated. The gate valve is opened, and the collet is expanded by the induction cam 30-3 to closely contact the inner surface 55-3 of the discharge port of the can. It is a picture of the state.

 In the above, the connection structure which connects a spray can and a spray gun using this socket after forming a socket in a spray can was demonstrated.

Next, the structure of connecting the spray can and the spray gun by using the upper and lower fastening containers for inserting the spray can without modifying the structure of the spray can will be described.

8 is a diagram illustrating a fastening structure of the spray can and the spray gun using the fastening container.

This structure is intended to easily and quickly mount the conventional spray can 55 without a socket to the spray gun is used a fastening container of the upper and lower sides to put the spray can for painting.

8A is an exploded view of the fastening structure using the fastening container.

As shown in the figure, the upper fastening container 45 is made of the same structure as the adapter of the general fastening unit, except that the shape of the adapter is slightly larger and longer to be fastened to the lower fastening container 60.

The lower fastening container 60 is provided with a fastening means for engaging with the upper fastening container in the shape of a cylinder into which the spray can can enter.

Representative fastening means configured to facilitate the mutual coupling and separation in the upper fastening container 40 and the lower fastening container 60 are as follows.

8B is a fastening means, the upper fastening container is formed with a cylindrical clasp 45-1, and the lower fastening container is formed with a cylindrical insertion groove 60-1, the cylindrical clasp to the cylindrical insertion groove. It is a configuration that it is fastened when it is fitted and turned.

That is, the fastening means of this type is configured in the lower container with the socket to be formed in the spray can and the adapter to be formed in the general fastening unit in the upper container in principle the configuration is the same as the general fastening unit.

8 [C] is a fastening means formed with a female screw 45-2 in the upper fastening container, and a male screw 60-2 in the lower fastening container. There is an advantage, but there is a disadvantage that the removal is not fast.

As described above, in the fastening structure for coupling the paint spray can to the spray gun, the socket is formed in the spray can and the fastening container for fastening to the spray gun using the socket and the structure of the spray can without changing the structure of the spray can. The fastening structure for fastening the spray can to the spray gun was described.

10: spray gun 11: inlet nozzle 20: tightening bolt
25: bolt packing 30: intermediate valve 35: nozzle packing
40: adapter (40-1: clasp, 40-2: protruding clasp) 41: collet adapter
50: socket (50-1: socket groove, 50-2: socket hole) 55: spray can
45: upper container 60: lower container
100: fastening unit (fastening bolt, intermediate valve, adapter and packing)

Claims (7)

In the spray gun, a fastening unit composed of a fastening bolt 20, an intermediate valve 30, and an adapter is assembled to the paint inflow nozzle 11, and a spray can 55 for painting is provided with a socket 50 for coupling with the fastening unit. In the coupling structure of the spray can and the spray gun for coating, characterized in that the coupling is formed, the adapter is connected to the socket and the spray can is turned;
The adapter is characterized in that the collet (41-3) is formed to be expanded and tightly fixed to the discharge port inner surface (55-3) by the induction cam (30-3) formed at the lower end of the intermediate valve when the spray can is combined to turn Connection structure of spray can for spray and spray gun.
In the fastening structure for fastening the coating spray can to the spray gun,
Intermediate valve 30 constituting the fastening unit 100 is a fastening structure of the spray can and spray gun for coating, characterized in that the check valve of the structure that opens and closes the paint inlet by the air pressure of the spray gun.
In the fastening structure for fastening the coating spray can to the spray gun,
The intermediate valve 30 constituting the fastening unit 100 is an opening / closing means (opening / closing lever 30-2 or collet lever 41 of the intermediate valve in the socket groove 50-1 of the socket 50 formed in the spray can for painting. -2)] is a fastening structure of the spray can and spray gun for coating, characterized in that the intermediate valve is automatically opened and closed when the spray can is removed by rotating the spray can.
In the fastening structure for fastening the coating spray can to the spray gun,
A fastening unit (100) consisting of a fastening bolt (20), an intermediate valve (30), and an upper fastening container (45) is formed on the paint inlet nozzle (11) of the spray gun, and a spray can (55) is provided on the lower fastening container (60). ) Is a fastening structure of the spray can and spray gun for painting, characterized in that the fastening means can be coupled to the cylinder and the upper fastening container is inserted.
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