JP2007209935A - Jet and jet cleaner equipped with it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a jet and a jet cleaner equipped with it used for an air cleaner or a water cleaner, pushing contaminant, dust or foreign matters in holes and gaps not into the deep part, but to the outside of small holes (gaps) in the opposite direction. <P>SOLUTION: This jet is a thin tube having a large end opening and a small end opening, introduces washing fluid from the large end opening, and jets axially through the small end opening. The small end opening provides jet directing to the direction opposite to the flow direction immediately before jetting, or to the direction tilted in an acute angle to the opposite direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a jet and a jet cleaner including the jet, and more particularly to a jet structure in an air cleaner or a water cleaner.

 As shown in FIGS. 7A and 7B, a jet in a conventional air cleaner or water cleaner is a straight tube type or a curved type thin tube having a large end opening and a small end opening, and is used for cleaning fluid such as air and water. After being introduced from the large end opening, it is ejected through the small end opening along the axial direction.

 By the way, depending on the application, air cleaners and water cleaners usually do not eject the cleaning fluid from the jet, but just touch the tip of the jet (one end with a small end opening) and move the entire jet backward (large end). Some of them have a control system in which a cleaning fluid is ejected when being displaced toward the other end having an opening. In that system, the small end opening of the jet is not of course directly in front of the tip as shown in FIGS. 7A and 7B so that the jet is not obstructed, but slightly biased to the side as shown in FIGS. 7C and 7D. The cleaning fluid can be ejected obliquely forward.

 However, the surface of an article can be cleaned by spraying a cleaning fluid, whether it is a direct type or an oblique type as described above, but it is inserted into a small hole or gap using the elongated shape of the jet. Even if it is attempted to clean dirt, dust, or foreign matter in the small holes or gaps, the cleaning may be insufficient. In particular, when cleaning the cutting grooves and chucks of machines used in the precision industry, such as drill drivers that drill holes in printed circuit boards, dirt, dust, and foreign matter are pushed deeper and narrower into the narrower area by a jet forward. However, there is a drawback that it accumulates in the sun every day and becomes a deposit, which adversely affects drill driver centering and rotation precision and stability, and quality and production of the printed circuit board.

 In view of the above, the present invention is used for an air cleaner or a water cleaner, and thereby prevents the dirt, dust, and foreign matter in the holes and gaps from being pushed to the back without warping. It is an object to provide a jet that can be pushed out of a hole or gap.

 Another object of the present invention is to provide a jet cleaner such as an air cleaner or a water cleaner provided with the jet.

 In order to achieve the above-mentioned object, the present invention first has a narrow tube shape having a large end opening and a small end opening. After introducing the cleaning fluid from the large end opening, the small end opening is formed along the axial direction. The small end opening provides a jet that is directed in a direction opposite to the flow direction immediately before the injection or a direction inclined at an acute angle with respect to the opposite direction.

 The said thin tube shape says that the internal diameter is comparatively small with respect to the length, but does not say the absolute size of a pipe | tube. It is not limited to a straight tube type, and may be curved as necessary.

 In the case of the straight pipe shape, the direction opposite to the flow direction immediately before the ejection is opposite to the direction in which the cleaning fluid is introduced from the large end opening.

 Next, from another aspect, the present invention also provides a jet cleaner that uses the jet of the present invention and can eject a cleaning fluid from the jet tip.

 The jet cleaner is not only an ordinary fixed type, but also when the tip of the jet is touched to displace the entire jet backward without ejecting the cleaning fluid at normal times, the cleaning fluid is ejected from the jet tip for the first time. Also say a jet cleaner.

 The jet having the above-described configuration is used because the small end opening in the ejection direction is directed in the opposite direction to the flow direction immediately before ejection, particularly in the case of a straight pipe, the direction is opposite to the introduction direction in the large end opening. Sometimes it can be pushed out of a small hole or gap in the opposite direction without spraying the object and pushing dirt, dust, or foreign matter in the hole or gap to the back.

 The present invention also provides a jet cleaner having the jet, that is, the jet according to the above configuration can be used in a form formed by being attached to a fuselage or a pedestal according to a user's demand. Taking advantage of this, the use of a jet cleaner can be made more convenient and more effective than before.

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

 Shown in FIG. 1 is a partial cross-sectional view of a jet cleaner of a preferred embodiment of the present invention, i.e. a jet cleaner with a jet of the preferred embodiment of the present invention. As shown in the drawing, the jet cleaner of this embodiment is configured such that the jet 2 of the preferred embodiment of the present invention can be displaced by touching the tip of the jet 2 with the airframe 1 and the entire jet 2 can be displaced rearward. Hold on. That is, although this is not a complete illustration, this figure shows the jet 2 as a whole by touching the tip of the jet 2 without spraying the cleaning fluid E at the normal time of the jet 2 of the preferred embodiment of the present invention. 6 is a view for showing application to a jet cleaner that ejects the cleaning fluid E from the front end of the jet 2 when it is displaced to the position of However, even if the cleaning fluid is not ejected normally, or the tip of the jet 2 touches something and the entire jet 2 is displaced backward, the cleaning fluid E is reduced when the entire jet 2 contracts backward. Any structure that is ejected from the tip of the jet 2 is conventional and will not be described in detail.

 When the jet 2 in FIG. 1 is viewed, a straight tube-type thin tube having a large end opening 21 and a small end opening 22 is introduced. After the cleaning fluid E is introduced from the large end opening 21, the small end along the axial direction is observed. Although it ejects via the opening 22, the small end opening 22 is going diagonally backward.

 More specifically, the small end of the jet 2 has an elliptical spherical shape as shown in FIG. 2A, but it may be a spherical shape as shown in FIG. 2B or a semicircular shape as shown in FIG. 2C. Looking at these three drawings, all of the small end openings 22 are directed rearward, although the shapes are different.

 The elliptical spherical shape in FIG. 2A and the circular spherical shape in FIG. 2B are directed obliquely backward, and the semicircular spherical shape in FIG. 2C is directed in a direction completely opposite to the introduction direction in the large end opening 21. Looking further at the semispherical small end in FIG. 2C, the semispherical semicircular end 25 is at the far end from the large end opening 21 in the axial direction of the straight tube-type thin tube in the figure, and is a plane. The end 24 is at the near end, and the small end opening 22 is open at the planar end 24. In this way, the small end opening 22 is directed in the direction completely opposite to the introduction direction in the large end opening 21.

 That is, the jet 2 in these three drawings has one end having a small end opening 22 having an elliptical spherical shape, a circular spherical shape, or a semicircular shape, and an axial direction after an internal passage 23 enters the large end opening 21. Is bent after reaching the inside of the ellipsoidal sphere, and is formed so as to come out as a small end opening 22 at an obliquely rear part or rear part of the ellipsoidal, circular, or semicircular sphere itself It is.

 If the jet 2 is a straight tube-type thin tube as described above, its small end is inserted into a small hole or a gap, and the cleaning fluid E is ejected from the small end opening 22 so that the inside of the small hole or the gap is filled. Of course, dirt, dust, and foreign matter can be warped and pushed out of the small holes or gaps in the opposite direction without being pushed inward, but the above effect can be achieved even with a curved thin tube.

 Referring to FIG. 2D, the jet 2 in this figure is not a straight pipe type but a curved type, and its small end has an elliptical spherical shape as in FIG. 2A, but its small end opening 22 has the elliptical shape. Although it is open in the spherical oblique rear part and is directed obliquely backward, it is not directed in the direction opposite to the introduction direction in the straight tube type large end opening 21 as described above, but is in the small end opening 22. It is heading diagonally in the opposite direction of the flow direction just before the jet. That is, when the present invention is applied to such a curved jet, if the small end opening 22 is opened at an obliquely rear part or rear part of an elliptical, circular, or semispherical shape, the ejection direction is changed to the small end opening 22. The small end is inserted into a small hole or a gap, and the cleaning fluid E is ejected from the small end opening 22 to the inside of the small hole or the gap. Without pushing the dirt, dust, or foreign matter to the back, it can be warped and pushed out of the small hole or gap in the opposite direction.

 The jet cleaner body 1 in FIG. 1 may have any shape, but as shown in FIG. 3, the jet 2 is held in a pistol shape as a whole, and the jet cleaner itself is a pistol shape. It is welcomed by the market that it is used for having a handle part.

 Next, an example used for a jet cleaner for cleaning a cutting groove and a chuck of a drill driver for drilling a printed circuit board according to the present invention will be described. As shown in FIG. 4, this jet cleaner uses the jet 2 as described above of the present invention except that the jet 2 is mounted so as to protrude from the surface of the two bases 10.

 The first of the two jets 2 (one on the right) uses air as the cleaning fluid E, and the second (one on the left) uses the cleaning liquid as the cleaning fluid E. Yes. In both cases, the jet 10 ejects the cleaning fluid E from the tip of the jet 2 when the tip of the jet 2 does not eject the cleaning fluid E during normal operation and the tip of the jet 2 is touched to displace the entire jet 2 backward. Although it is a cleaner, its configuration is conventional, so the description thereof is omitted here.

 And the usage is demonstrated referring FIG.5 and FIG.6. As shown by the arrow, first, the chuck of the drill driver as the cleaning object 3 is inserted into the jet 2 using the right air as the cleaning fluid E, and then the jet 2 is lowered with a little force. The air is ejected from the tip of the jet 2. In this way, dirt, dust and foreign matter in the chuck of the drill driver are blown out of the chuck in the opposite direction.

 Then, the left water (purified water) is transferred to a jet that uses cleaning fluid. The operation is the same as described above, but is a stage targeting an adhesive with respect to the air in the previous stage.

 Finally, return to the right air jet. The operation is still the same as above, but the effect is slightly different from the first stage. That is, it is a stage for drying the inside wetted with water in the second stage of the chuck, rather than blowing out dirt, dust and foreign matter inside the chuck of the drill driver to the outside of the chuck in the opposite direction.

 The three steps may be repeated as many times as necessary.

 In the jet according to the present invention, the small end opening in the ejection direction is directed in the direction opposite to the large end opening in the introduction direction. It can be pushed out of the small hole (gap) in the opposite direction without warping.

 Moreover, since this jet is attached to an airframe or a pedestal suitable for various uses as required, the use range is wide.

1 is a cross-sectional view of a jet and a jet cleaner according to a preferred embodiment of the present invention. 1 is a cross-sectional view of a jet according to a first embodiment which is a straight tube-type thin tube and has a small end having an elliptical spherical shape in the present invention. It is sectional drawing of the jet of 2nd Example which becomes a straight tube | pipe type thin tube and the small end is a spherical shape in this invention. It is sectional drawing of the jet of 3rd Example which becomes a straight pipe | tube type thin tube in this invention, and the small end is a hemispherical shape. It is sectional drawing of the jet of 4th Example which becomes a thin tube | pipe of a curved tube type in this invention, and the small end is an elliptical sphere shape. 1 is a side view of a pistol jet cleaner that is a preferred embodiment of the present invention. 1 is a perspective view of a trapezoidal jet cleaner which is a preferred embodiment of the present invention. It is explanatory drawing which shows the step which performs a washing | cleaning process with the jet cleaner shown in FIG. It is explanatory drawing which shows the step which performs a washing | cleaning process with the jet cleaner shown in FIG. It is sectional drawing of the example 1 of a conventional jet-straight pipe | tube type | mold which has an elliptical spherical-shaped tip. FIG. 6 is a cross-sectional view of a conventional jet example 2—a straight pipe type having a spherical tip. It is sectional drawing of the example 3 of the conventional jet-a straight pipe | tube type | mold which has a semi-spherical tip. FIG. 6 is a cross-sectional view of a conventional jet example 4—curved tube type having an elliptical spherical tip.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Airframe 2 Jet 3 Object 10 of washing | cleaning Base 21 Large end opening 22 Small end opening 23 Passage 24 Plane end 25 Semispherical end E Cleaning fluid

Claims (9)

 A small tube having a large end opening and a small end opening, and a cleaning fluid is introduced from the large end opening and then ejected along the axial direction via the small end opening. The jet is characterized in that the opening is formed so that the cleaning fluid is directed in a direction opposite to the flow direction immediately before jetting or in a direction inclined at an acute angle with respect to the opposite direction.  A straight pipe shape having a large end opening and a small end opening, and a cleaning fluid is introduced from the large end opening and then ejected along the axial direction via the small end opening. The end opening is formed so that the cleaning fluid is directed in a direction opposite to the flow direction immediately before jetting or in a direction inclined at an acute angle with respect to the opposite direction.  One end having the small end opening has an elliptical spherical shape, and the passage inside thereof is bent after reaching the inside of the elliptical spherical shape along the axial direction after entering from the large end opening. The jet according to claim 1 or 2, wherein the jet is formed so as to come out as an opening at the small end at an oblique rear portion.  One end having the small end opening is formed into a spherical shape, and the passage inside thereof is bent after reaching the inside of the spherical shape along the axial direction after entering from the large end opening. 3. The jet according to claim 1, wherein the jet is formed so as to come out as an opening at the small end at an oblique rear portion.  One end having the small end opening is a semi-spherical shape, the spherical end of the semi-spherical shape is at the far end from the large end opening in the axial direction, the planar end is at the near end, and 3. The jet according to claim 1, wherein a small end opening is opened at the flat end.  A jet cleaner that ejects a cleaning fluid from a tip of the jet, wherein the jet is the one according to any one of claims 1 to 5.  A jet cleaner that ejects the cleaning fluid from the jet tip when the tip of the jet is touched to displace the entire jet backward without jetting the cleaning fluid in a normal state. A jet cleaner in which the one described in any one of 5 is used.  8. The jet cleaner according to claim 7, further comprising a fuselage that holds the jet so as to form a pistol as a whole and has a pistol-like handle portion. The jet is mounted so as to protrude from the surface of the two pedestals, wherein the first of the two can use air as a cleaning fluid, and the second can use a cleaning liquid as a cleaning fluid. Jet cleaner as described in

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