KR20110122497A - Liquid-jet apparatus having flow passage connection part - Google Patents

Abstract

PURPOSE: A liquid spraying device with a flowing path connecting unit is provided to connect a flowing path connecting unit to the outside of a body, thereby slimming the thickness of the body. CONSTITUTION: A liquid spraying device includes a body(10), a liquid receiving tank(40), an opening/closing member, and a control lever(31). The body includes a connection unit connected to an external device which supplies compressed air. The body has a liquid spraying hole and an air spraying hole. One end of a flowing path connecting unit is connected to the other end of a frontal air flowing path. The other end of the flowing path connecting unit is formed on the inside of a connection air flowing path. The liquid receiving tank is exposed to the outside of the body. A part of the opening/closing member is exposed to the inside of a liquid flowing path. The control lever is exposed to the inside of the body and is connected to the opening/closing member. The control lever moves the opening/closing member forward/backward.

Description

Liquid-injection apparatus with flow path connection part {Liquid-Jet Apparatus Having Flow Passage Connection Part}

The present invention relates to a liquid injection device, and more particularly, to a liquid injection device provided so that a flow path connecting portion communicating the front air flow path and the rear air flow path of the liquid injection device is exposed to the outside of the body.

When painting or painting with liquid pigments, or when applying liquid cosmetics to the skin, it is often necessary to use only the required amount of liquid at a uniform concentration. In this case, a method of spraying the liquid uniformly in the form of fine particles using compressed air using a liquid spray device is used.

Since the liquid injection device generally does not generate compressed air by itself, it is used by connecting an external device such as an air compressor that can supply compressed air. However, the conventional liquid injection device is positioned to form a T-shaped body at the lower portion of the middle of the liquid injection device body that can be connected to the compressed air supply pipe of the external device.

In addition, the conventional liquid spraying device is provided with an air flow path through which air flows, which causes the thickness of the body of the liquid spraying device to be formed thick.

Therefore, the structure of the liquid injection device as described above has caused inconvenience to the user to grip the body (grip) in using the liquid injection device.

In addition, since the air flow path is provided in the body, there is a problem in that maintenance and cleaning of the air flow path that is degraded by long-term use cannot be easily performed.

Therefore, a method for solving such a problem is required.

An object of the present invention is to solve the above-mentioned conventional problems, to provide a liquid injection device provided with a flow path connecting portion formed inside the connection air flow path outside the body.

In addition, the connection air flow path is formed on the outer side of the body, and the connection portion is provided at the rear to provide a liquid injection device that is easy for the user to grip.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to solve the above process, the liquid injection device provided with a flow path connection part of the present invention has a connection part connected to an external device for supplying compressed air at a rear part thereof, and a liquid injection hole is formed at the front to flow the liquid, The liquid flow path becomes narrower in cross section, and at one end, an air injection port adjacent to the liquid injection port is formed so that air flows, and the other end is a front air path exposed to the outside through the side of the body, and one end is connected to the external device. The other end is located inside the rear air passage is exposed to the outside through the side of the body is formed inside, the longitudinally formed body, one end is in communication with the other end of the front air passage, the other end of the rear air passage A connection air flow passage communicating with the other end is formed therein and is provided to be exposed to the outside of the body. A furnace connection part, which is provided to be exposed to the outside of the body, has a space in which the injection liquid is accommodated, a liquid holding tank which is in communication with the liquid flow path and supplies the injection liquid, and a portion of the liquid flow path is exposed inside And an opening / closing member for reciprocating in the front-rear direction and selectively opening and closing the liquid injection port and being exposed to the outside of the body, and connected to the opening / closing member to adjust the opening / closing member in a reciprocating direction.

And, the front air flow path and the rear air flow path is exposed to the outside through the side of the body is formed with a threaded engaging projection is formed, the flow path connecting portion, the connecting member and the connection air flow path formed therein and the It may include a fastening member rotatably provided to surround the outer end of the connecting member, the screw member is formed to be engaged with the screw thread of the engaging projection.

In addition, both ends of the connection member may be inserted into the coupling protrusion is inserted into the inner protrusion of the coupling protrusion in close contact.

In addition, the insertion protrusion may be provided with a sealing member surrounding the outside of the insertion protrusion.

In addition, the air injection port, it may be formed in a form surrounding the outer side of the liquid injection port.

The control lever may have an inclination of a predetermined angle with respect to the liquid holding tank based on the cross section of the body in the transverse direction.

In addition, the liquid holding tank may have an acute inclination with respect to the front of the body.

And, a fixing member is provided on the inner wall of the body, one end of the control lever is hingedly coupled to the fixing member, and as the other end of the control lever exposed to the outside of the body in the front and rear direction, the The opening and closing member may correspond in a lever manner to reciprocate in the front and rear directions.

In addition, the rear end of the opening and closing member may be provided with an elastic member for returning the control lever and the opening and closing member moved forward.

In order to solve the above problems, the liquid injection device provided with a flow path connector of the present invention has the following effects.

First, since the flow path connecting portion is provided on the outer side of the body of the liquid spraying device, the thickness of the body can be formed thinly, so that it is easy to grip.

Second, there is an advantage that the maintenance, repair and cleaning of the air flow path can be easily performed due to the detachable flow path connecting portion.

Third, the body of the liquid spraying device is formed to be easy for the user to grip by being provided at the rear portion. In addition, since the supply pipe of the external device for providing the compressed air is not disturbed, there is an advantage that the liquid spray device can be used comfortably.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view showing a liquid jet in accordance with an embodiment of the present invention;
2 is a cross-sectional view showing the internal structure of a liquid spraying device according to an embodiment of the present invention;
3 is a cross-sectional view showing in detail the structure in which the front air flow path and the connection air flow path of the liquid injection device according to an embodiment of the present invention are coupled to communicate with each other;
Figure 4 is a perspective view showing the entire air flow path and the opening and closing member receiving space of the liquid injection device according to an embodiment of the present invention;
Figure 5 is a side view showing the opening and closing device of the liquid injection device according to an embodiment of the present invention;
6 is a sectional view showing an injection structure of the liquid injection device according to the embodiment of the present invention;
Figure 7 is a side view showing the inclination of the liquid holding tank for the liquid injection device according to an embodiment of the present invention; And
Figure 8 is a rear view showing the mutual inclination of the liquid holding tank and the control lever of the liquid injection device according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

1 is a perspective view of a liquid ejecting apparatus 1 according to an embodiment of the present invention.

Referring to Figure 1, the liquid injection device 1 of the present embodiment, the body 10 is formed long in the longitudinal direction, the liquid receiving tank 40 and a part of the control lever 31 is exposed to the outside. A nozzle 20 is formed at the front of the body 10 to inject liquid and air, and a flow path connecting part including a connecting member 60 and a fastening member 65 is provided at the outer side of the body. Details of the liquid holding tank 40, the control lever 31 and the flow path connecting portion will be described later.

In addition, the body 10 of the liquid spraying device 1 of the present embodiment has a form in which the front housing member 11 and the rear housing member 12 are combined, and although not shown in FIG. 1, a cross-sectional view of FIG. The front air passage 21b, the rear air passage 21c, and the liquid passage 22 to be disclosed in are provided in the body 10. In addition, the opening and closing device 30 including the opening and closing member 32 in which at least a portion of the liquid passage 22 is exposed to the interior space of the liquid passage 22 extends across the front housing member 11 and the rear housing member 12. It is provided, the opening and closing device 30 will be described later. And the rearmost portion of the body 10 is provided with a connecting portion (23).

The body 10 is formed to be long in the longitudinal direction, and the opening and closing device 30, the connecting portion 23, the front air passage 21b, the rear air passage 21c and the liquid passage 22 is provided. And a portion of the liquid holding tank 40 and the control lever 31 is exposed to the outside of the body.

In this embodiment, the body 10 has a form in which the front housing member 11 and the rear housing member 12 are combined, and each housing member is formed to be detachable. This has the effect of increasing the assembly, it has the advantage that the maintenance, repair and cleaning of the device can be conveniently performed.

However, this is only one embodiment, and the body 10 may be integrally formed, or may further include other housing members other than the front housing member 11 and the rear housing member 12.

In addition, the body 10 in the present embodiment has a suitable width so that the user can grip by hand, the cross section is formed in a circular shape.

The nozzle 20 is located in front of the liquid injection device 1, and the inlet is opened to inject liquid and air. The air inlet 21a and the liquid jet 22a are provided inside the open inlet, which will be described later. In the present embodiment, the nozzle 20 has a form in which the space is gradually narrowed toward the front, and is combined with the body 10 to form the liquid spraying device 1 as a pen.

The connecting portion 23 is provided at the rear of the body 10. Since the liquid injection device 1 uses compressed air to inject liquid, an external device capable of supplying compressed air such as an air compressor is required. The external device and the liquid injection device 1 are connected through a connection 23. The connecting portion 23 is formed in a shape corresponding to the compressed air supply means of the external device, and communicates with the rear air flow passage 21c to transmit the compressed air to the air injection port 21a.

In the present embodiment, the connecting portion 23 is provided at the rear of the body 10, and a protrusion is formed at the rear end of the connecting portion 23 so as to connect the compressed air supply pipe of the external device. A rear air passage 21c is formed inside the protrusion, and the compressed air may flow along the rear air passage 21c.

As such, the connection part 23 is provided at the rear of the body 10 to have various advantages. First, the user has the advantage that the use of the liquid injection device 1 can be used comfortably because the supply pipe of the external device is not obstructed. In addition, since the user is smoothly formed in a part without a portion or uneven portion connected to other parts in the part which the user grips by hand, the user's grip can be increased. In addition, the process of producing the liquid spraying device 1 can be simplified and the production cost can be lowered.

2 is a cross-sectional view showing the interior of the liquid injection device 1 according to an embodiment of the present invention.

2, the front air passage 21b, the rear air passage 21c, and the liquid passage 22 are provided inside the body 10. A portion of the opening / closing member 32 is exposed to the inner space of the liquid passage 22, and the connecting member 60 having the connecting air passage 21d formed therein is coupled to the body 10.

The liquid flow path 22 has a liquid flow space formed therein so that the liquid flowing out of the liquid holding tank 40 can flow to the liquid injection port 22a located at the front end. In addition, a part of the opening / closing member 32 is exposed to the inner space of the liquid passage 22 to open and close the liquid injection port 22a.

In addition, the liquid flow passage 22 is formed so that the space in front becomes narrower, and thus the opening and closing member 32 can effectively open and close the liquid injection port 22a.

In this embodiment, the liquid passage 22 is located in front of the liquid spraying device 1 as a whole, and specifically, in front of the control lever 31 belonging to the opening and closing device 30. And a part of the opening and closing member 32 belonging to the opening and closing device 30 is exposed to the internal space of the liquid flow path.

In particular, in the present embodiment, as the space in front of the liquid passage 22 is narrowed, the front air passage 21b also has a narrower space in front, so that the air injection port 21a is formed to be the narrowest, and the outer side of the liquid injection port 22a. It is formed in the shape surrounding. This will be described in detail with reference to FIGS. 5 to 6.

The front air passage 21b is generally located in front of the body 10, and at one end, an air injection port 21a through which compressed air is injected is formed, and the other end is exposed to the outside through the side of the body 10.

The rear air passage 21c is generally located at the rear of the body 10, and one end is formed in the connecting portion 23 so as to be in communication with an external device for supplying compressed air, and the other end is outside through the side of the body 10. Exposed.

That is, the other end of the front air passage 21b and the other end of the rear air passage 21c are exposed on the side of the body 10, and the front air passage 21b and the rear air passage to supply compressed air from the rear to the front. 21c need to be interconnected. In the present invention, a flow path connecting portion is provided for this purpose.

A connection air flow path 21d is formed inside the flow path connecting portion so as to connect the front air flow path 21b and the rear air flow path 21c to each other, so that the compressed air supplied by the external device is the rear air flow path 21c. It flows from the connection air passage 21d to the front air passage 21b through the air injection port 21a.

Figure 3 is a cross-sectional view showing in detail the structure in which the front air flow path and the connection air flow path of the liquid injection apparatus according to an embodiment of the present invention are coupled to communicate.

Referring to FIG. 3, in the present embodiment, the flow path connecting part includes a connecting member 60 having a connecting air flow path 21d formed therein and a fastening member 65 fastened to the body 10, wherein the body ( 10, the coupling protrusion 70 is coupled to the fastening member 65 is formed.

Specifically, the connecting member 60 is formed long in the longitudinal direction of the body, has a circular cross section, the length corresponding to the distance that the other end of the front air passage 21b and the other end of the rear air passage 21c are spaced apart from each other. Has

In addition, the fastening member 65 is rotatably provided to surround the outside of both ends of the connection member 60. That is, the fastening member 65 is connected to the connecting member 60 so as to rotate along the circumference of the connecting member 60, the screw groove is formed on the inside.

On the other hand, the engaging projection 70 is formed in the portion of the front air passage (21b) and the rear air passage (21c) exposed to the outside through the side of the body (10). That is, the coupling protrusion 70 extends and protrudes from the body 10, and the other ends of the front air passage 21b and the rear air passage 21c are located therein. In addition, a screw thread is formed on the outer side of the coupling protrusion 70 to be coupled to the screw groove inside the fastening member 65.

Therefore, the connecting member 60 can be fixed to the body 10 only by the rotation of the fastening member 65 without moving the connecting member 60, which causes the front air passage 21b and the rear air passage 21c. And the connecting air passage 21d communicate with each other.

In this case, the compressed air may leak through the fastening part, and the insertion protrusion 68 and the sealing member 69 may be provided to prevent the compressed air.

Insertion protrusions 68 are formed at both ends of the connecting member 60 to be inserted into the coupling protrusion 70, and is in close contact with the inner wall surface of the coupling protrusion 70 when inserted. That is, when the fastening member 65 is rotated so as to be completely engaged with the coupling protrusion 70, the insertion protrusion 68 is in close contact with the inner wall surface of the coupling protrusion 70 such that compressed air is not lost.

Here, in order to more reliably block the loss of compressed air, the insertion protrusion 68 may further include a sealing member 69 surrounding the outside of the insertion protrusion 68. The sealing member 69 is generally formed of a rubber of a ring shape, and is compressed between the insertion protrusion 68 and the coupling protrusion 70 to block the loss of compressed air.

Meanwhile, a tapered comb surface 66 may be formed near the insertion protrusion 68 formed inside the connection member 60. If a step occurs inside the connecting member 60 so that the connection air flow path 21d is inevitably narrowed by the insertion protrusion 68, it may be an element that hinders the flow of compressed air. Therefore, it is possible to form a flexible air flow by forming the step to the inclined surface.

Since the flow path connecting portion is formed on the outside of the body 10, the thickness of the body 10 can be formed to be thin and easy to grip, and the flow path connecting portion can be detached, thereby maintaining, repairing and maintaining the air flow path. There is an advantage that the washing can be easily performed.

In addition, as described above, in the present embodiment, the body 10 includes a front housing member 11 and a rear housing member 12, and in general, each housing member may have a structure coupled by a thread or the like.

In this case, in order for both ends of the connection member 60 to be coupled to each of the pair of coupling protrusions 70, the coupling protrusions formed on the front housing member 11 and the coupling protrusions formed on the rear housing member 12. 70 need to be located on the same straight line with each other. However, the general thread has a problem that it is difficult to adjust the pair of the projections 70 is located on the same straight line when the front housing member 11 and the rear housing member 12 are coupled to each other.

Therefore, in this case, a stopper may be formed at one side of the front housing member 11 or the rear housing member 12, and a protrusion may be formed at the other side of the stopper.

Specifically, a groove formed to a predetermined thickness along the longitudinal direction of the body 10 may be formed on the inner wall surface of any one of the front housing member 11 or the rear housing member 12. In addition, a groove extending from the end of the groove to the predetermined thickness in the circumferential direction of the body 10 is formed again, it is possible to form a 'b' shaped locking groove as a whole. And, the inner wall surface of the other side is to be formed a locking projection of the shape corresponding to the locking groove.

That is, when the front housing member 11 and the rear housing member 12 are coupled, the locking projection is inserted into the locking groove, and finally, the front housing member 11 and the rear housing member 12 are rotated in opposite directions. The locking protrusion may be seated at the end of the locking groove.

Due to this coupling structure, the front housing member 11 and the rear housing member 12 can always achieve a constant angle of engagement, and thus a pair of coupling protrusions 70 can also be positioned on the same straight line. As a result, the connecting member 60 can be accurately coupled to the pair of coupling protrusions 70.

Figure 4 is a perspective view showing the entire air flow path and the opening and closing member receiving space of the liquid injection device according to an embodiment of the present invention.

Referring to FIG. 4, as described above, the front air passage 21b, the rear air passage 21c, and the connection air passage 21d are connected to each other, and the opening / closing member accommodation space 15 is formed inside the body 10. ) Is formed.

The opening and closing member accommodation space 15 is a space in which a part of the opening and closing member 32 is accommodated, and guides the opening and closing member 32 to be fixed, and is formed to prevent the opening and closing member 32 from being damaged by an external force. do.

In this embodiment, the opening and closing member accommodating space 15 is formed in the longitudinal direction of the body 10 inside the body 10. A part of the opening / closing member 32 is accommodated in this opening / closing member accommodation space 15. And, in order to control the movement of the opening and closing member 32, the rear end of the opening and closing member accommodation space 15 is closed.

FIG. 5 is a side view showing the opening and closing device 30 of the liquid injection device 1 according to the embodiment of the present invention, and FIG. 6 shows the injection structure of the liquid injection device 1 according to the embodiment of the present invention. It is a cross section.

5, the opening and closing device 30 is composed of an adjustment lever 31, the opening and closing member 32, the fixing member 33 and the elastic member 34, a part of the opening and closing member 32 is a liquid flow path ( It is exposed to the internal space of 22).

Referring to FIG. 6, an air injection port 21a and a liquid injection port 22a are positioned inside the nozzle 20.

The control lever 31 is partially exposed to the outside, it is organically connected to the opening and closing member (32). Then, the opening and closing member 32 selectively opens and closes the liquid injection port 22a according to the operation of the control lever 31. In this embodiment, one end of the control lever 31 is hingedly connected to the fixing member 33 fixed to the inner wall surface of the body 10.

And the other end of the control lever 31 is exposed to the outside is rotated relative to the axis connected to the fixing member (33). However, the area of the open surface formed on the body 10 so that the other end of the control lever 31 is exposed to the outside is not formed wide to limit the movable range of the control lever 31. Therefore, since the control lever 31 moves closer to the front and rear movement than the rotational movement with the naked eye, the movement of the control lever 31 will be described as the front and rear movement.

As described above, the opening and closing member 32 selectively opens and closes the liquid injection port 22a according to the operation of the control lever 31, and a part of the opening and closing member 32 is exposed to the internal space of the liquid flow passage 22. In the present embodiment, when the control lever 31 is moved back and forth in the hinge form, the opening and closing member 32 is pushed to the rear by the rear of the control lever 31 is adjusted to the opening and closing member 32 The part caught by the lever 31 is formed.

In addition, the elastic lever 34 is further provided at the rear of the opening and closing member 32 so that the control lever 31 and the opening and closing member 32 which are moved backward by the external force can return to the front when no external force is applied. As a result, when the control lever 31 is operated rearward, a force is applied to the shaft to which the control lever 31 and the fixing member 33 are connected, and the opening and closing device 30 is driven in a lever manner as a whole.

On the other hand, in the present embodiment, the opening and closing member 32 is exposed to the internal space of the liquid passage 22 in front of the control lever 31, the front portion is formed to taper in the form of a pointed pin. As described above, the liquid passage 22 has a narrower space in front, so that the liquid injection port 22a at the front end is formed in the narrowest form. Therefore, the tapered end of the opening / closing member 32 is inserted into the liquid injection port 22a so that the discharge of the liquid flowing in the liquid flow passage 22 can be effectively controlled by the forward / backward movement of the opening / closing member 32. .

In addition, as described above, a part of the opening / closing member 32 located behind the control lever 31 is accommodated in the opening / closing space accommodation space 15 with the rear end closed, and the forward and backward movement of the opening / closing member 32 can be controlled. have.

The switchgear 30 may be formed in various structures other than the above, and the driving method of the switchgear 30 disclosed in this embodiment is just one embodiment.

The air injection port 21a and the liquid injection port 22a are formed at the front end of the front air passage 21b and the liquid passage 22 as described above. The liquid flowing in the liquid flow passage 22 by the compressed air injected from the air injection port 21a is injected forward from the liquid injection port 22a according to the selective opening and closing of the switching device 30. Therefore, for effective injection, the air jet port 21a is formed at a position adjacent to the liquid jet port 22a.

In particular, in this embodiment, the air injection port 21a is formed in a circular shape so as to surround the outside of the liquid injection port 22a. That is, the liquid injection port 22a is located at the center of the air injection port 21a.

In addition, since the air passage 21 and the liquid passage 22 are formed so that the inner space becomes narrower from the front, the compressed air injected from the air injection port 21a is symmetrical with respect to the liquid injected from the liquid injection port 21a. Converge. Therefore, it is possible to uniformly spray the liquid toward the injection target.

7 is a side view showing the inclination of the liquid holding tank 40 with respect to the liquid spraying device 1 according to an embodiment of the present invention, Figure 8 is a view of the liquid spraying device 1 according to an embodiment of the present invention It is a rear view which shows the mutual inclination of the liquid accommodation tank 40 and the control lever 31. FIG.

Referring to FIG. 7, the liquid holding tank 40 has an acute inclination with respect to the front of the body 10.

Referring to FIG. 8, the liquid holding tank 40 and the control lever 31 are formed at an inclined position to have a predetermined angle with respect to the cross section of the body 10.

The liquid holding tank 40 is provided to be exposed to the outside of the body 10 and has a space in which the liquid for injection is accommodated. The liquid holding tank 40 communicates with the liquid flow passage 22 so that the liquid contained in the accommodation space flows into the liquid flow passage 22.

In this embodiment, the liquid holding tank 40 is formed so that the inner wall surface is sloped because the upper portion is wider than the lower portion. Therefore, a sufficient accommodating space can be secured therein, and the liquid in the accommodating space flows smoothly along the non-degreased inner wall surface to the liquid flow passage 22. In addition, the upper surface of the receiving space is further provided with a cover that can be attached to and detached from the upper surface so that liquid does not flow out.

In addition, the liquid holding tank 40 is formed to be detachable from the liquid flow path 22, it is possible to increase the convenience when the liquid supply or maintenance is required.

In particular, in the present embodiment, the liquid holding tank 40 has an acute angle in a form in which the center line is inclined with respect to the front of the body 10 when viewed from the side. The liquid spray device 1 may be used for spraying a paint and spraying a liquid cosmetic onto one's face or skin.

Therefore, in the case of spraying toward the self, the body 10 of the liquid spraying device 1 has a forward position because the height of the hand that grips the liquid spraying device 1 is often lower than that of its face. It keeps its upward shape. Accordingly, the inclination of the body 10 of the liquid injection device 1 is opposite to the case of spraying toward the object located in front of the user.

Therefore, when the liquid holding tank 40 has an acute angle toward the front of the body, when the front of the body 10 is upward, the center line of the liquid holding tank 40 can be maintained closer to the vertical to the ground. That is, the state in which the liquid in the accommodation space can flow smoothly into the liquid passage 22 is maintained.

As such, the liquid holding tank 40 may form various inclinations with respect to the body 10 according to the user's purpose. In addition, the liquid spraying device 1 according to the present embodiment is provided with a connecting portion 23 at the rear, so that the body 1 can be easily gripped. Can be used.

In addition, in the present embodiment, the liquid holding tank 40 has a predetermined angle of inclination with respect to the control lever 31 based on the cross section of the body 10. In the case where the user uses the liquid spraying device 1, it is common to use the liquid containing tank 40 so as to be positioned upward with respect to the body 10 so that the liquid in the space inside the liquid containing tank 40 is not inclined. to be.

At this time, if the control lever 31 is located upward with respect to the body 10 which is in the same line in the longitudinal direction as in the liquid holding tank 40, the control lever 31 when the liquid injection device (1) is gripped on the human body structure It is inconvenient to operate with a finger. Therefore, as shown in FIG. 8, when the liquid holding tank 40 is provided to have a predetermined angle of inclination with respect to the control lever 31 and the cross section, the user can easily operate the control lever 31.

In addition, in a special situation such as when the user is left-handed, it is possible to change the inclination of the liquid holding tank 40 with respect to the control lever 31.

As described above, the preferred embodiments of the present invention have been described, and the fact that the present invention can be embodied in other specific forms in addition to the above-described embodiments without departing from the spirit or scope thereof has ordinary skill in the art. It is obvious to them. Therefore, the above-described embodiments should be regarded as illustrative rather than restrictive, and thus, the present invention is not limited to the above description and may be modified within the scope of the appended claims and their equivalents.

10: body 11: front housing member
12: rear housing member 15: opening and closing member accommodation space
20: nozzle 21a: air jet
21b: forward air passage 21c: rear air passage
21d: connecting air flow path 22: liquid flow path
22a: liquid jet 23: connection
30: switchgear 31: control lever
32: opening and closing member 33: fixing member
34: elastic member 40: liquid holding tank
60: connecting member 65: fastening member
66: inclined plane 68: insertion protrusion
69: sealing member 70: engaging projection

Claims (9)

The rear side is provided with a connecting portion connected to the external device for supplying compressed air, the liquid injection port is formed in the front for the liquid flow and the cross section is gradually narrowed in the front, the air at one end adjacent to the liquid injection port so that the air flows An injection hole is formed and the other end is located in the front air flow path exposed to the outside through the side of the body and one end is located in the connecting portion so as to communicate with the external device and the other end is a rear air flow path exposed to the outside through the side of the body is inside A body formed in and extending in the longitudinal direction;
One end is in communication with the other end of the front air flow path, the other end is connected to the other end of the air flow path connected to the air flow path is formed inside, the flow path connecting portion provided to be exposed to the outside of the body;
A liquid containing tank exposed to the outside of the body and having a space in which the liquid for injection is accommodated and communicating with the liquid flow path to supply the liquid for injection;
A part of the opening and closing member which is partially exposed to the inside of the liquid channel and reciprocates in the front and rear direction and selectively opens and closes the liquid injection port; And
An adjustment lever exposed to the outside of the body and connected to the opening / closing member to reciprocate the opening / closing member in a front-rear direction;
Liquid injection device comprising a. The method of claim 1,
Coupling protrusions formed with threads are formed at portions of the front air passage and the rear air passage exposed to the outside through the side of the body,
The flow path connecting portion,
A connection member having the connection air passage formed therein; And
A fastening member rotatably provided to surround the outer ends of both ends of the connection member, the fastening member having a screw groove engaged with the thread of the coupling protrusion;
Liquid injection device comprising a. The method of claim 2,
Both ends of the connecting member is inserted into the coupling projections is a liquid injection device is formed with an insertion projection in close contact with the inner wall surface of the coupling projection. The method of claim 3,
The insertion projection is provided with a liquid injection device provided with a sealing member surrounding the insertion projection outside. The method of claim 1,
The air injection port, the liquid injection device formed in a form surrounding the outer side of the liquid injection port. The method of claim 1,
The control lever is a liquid injection device having a predetermined angle of inclination with respect to the liquid holding tank relative to the cross section of the transverse direction of the body. The method of claim 1,
The liquid holding tank, the liquid injection device having an inclination of the acute angle with respect to the front of the body. The method of claim 1,
A fixing member is provided on the inner wall of the body,
One end of the adjustment lever is hingedly coupled to the fixing member,
By operating the other end of the control lever exposed to the outside of the body in the front and rear direction, the liquid ejecting device reciprocating in the front and rear direction corresponding to the opening and closing member in a lever manner. The method of claim 8,
At the rear end of the opening and closing member,
And an elastic member for returning the control lever and the opening and closing member moved forward.

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