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KR-20260063594-A - Rotation assembly for cleaner with air bearing

KR20260063594AKR 20260063594 AKR20260063594 AKR 20260063594AKR-20260063594-A

Abstract

The present invention relates to an air bushing for a cleaning device equipped with an air bearing, and more specifically, to an air bushing for a cleaning device that receives air from the outside and rotates by the force of air injection to clean a PCB, comprising: a housing body (10) formed with upper and lower ends formed to be penetrable and having an air hole (11) formed on the outer side extending to the inside, so as to receive air through the upper end and the air hole (11) respectively to form an air bearing and rotate a rotating shaft (20); a rotating shaft (20) inserted into the interior of the housing body (10) and formed with upper and lower ends formed to be vertically penetrable so as to discharge air through the penetrable part; an air bushing (30) made of a graphite material and fitted onto the outer circumference of the rotating shaft (20); a nozzle body (40) fastened to the lower end of the rotating shaft (20) and configured to receive and discharge air from the rotating shaft (20); and a nozzle body (40) configured to be spaced apart from each other at the lower end of the nozzle body (40). By including an ultrasonic nozzle (50) that receives air from a nozzle body (40) and discharges it to the outside to rotate a rotating shaft (20) and clean a PCB through the discharge pressure, the original purpose of the air bushing is maintained, and air is supplied to the side of the housing body to form an air bearing separately from the air supply for the rotation of the rotating body, nozzle body, and ultrasonic nozzle. When the rotating body rotates for cleaning the PCB surface, frictional resistance between the housing body and the rotating body is minimized by the air bearing, thereby preventing the occurrence of foreign substances such as grinding and grease scattering, allowing for semi-permanent use and making it a useful invention with high economic efficiency.

Inventors

  • 이승호

Assignees

  • 씨티에스(주)

Dates

Publication Date
20260507
Application Date
20241030

Claims (7)

  1. In an air bushing for a cleaning device that receives air from the outside and rotates by the force of air injection to clean a PCB, A housing body (10) configured such that the upper and lower ends are formed to be penetrating, and an air hole (11) extending from the outside to the inside is formed, so that an air bearing can be formed inside by receiving air through the air hole (11), and A rotating shaft (20) that is inserted into the interior of the housing body (10) and is formed so that the upper and lower parts are vertically penetrated to supply and discharge air through the penetrated parts, and An air bushing (30) made of graphite material and fitted onto the outer circumference of the rotating shaft (20), and A nozzle body (40) configured to be connected to the lower part of the above-mentioned rotating shaft (20) and to receive and discharge air from the above-mentioned rotating shaft (20), and A rotating assembly for a cleaning machine equipped with an air bearing, characterized by including an ultrasonic nozzle (50) configured to be spaced apart from each other at the lower part of the nozzle body (40), which receives air from the nozzle body (40) and discharges it to the outside, thereby rotating the rotating shaft (20) and cleaning the PCB through the discharge pressure.
  2. In Article 1, When air is supplied through the air hole (11) above, A rotating assembly for a cleaning machine equipped with an air bearing, characterized in that an air bearing (b) is formed between the inner side and the outer side of the housing body (10) facing the inner and outer sides of the air bushing (30).
  3. In Article 1, The above housing body (10) is, Upper and lower steps (13, 15) are formed on the upper and lower parts, respectively, and The upper and lower portions of the air bushing (30) are formed with upper and lower extension plates (31, 35) having a larger diameter than the central portion, A rotary assembly for a cleaning machine equipped with an air bearing, characterized in that the upper and lower extension plates (31, 35) are seated on the upper and lower steps (13, 15).
  4. In any one of paragraphs 1 to 3, The above air bushing (30) is, A rotating assembly for a cleaning machine equipped with an air bearing, characterized by being positioned to protrude further outward than the upper and lower sides of the housing body (10).
  5. In Article 1, The above rotation axis (20) is, A shaft portion (21) located inside the above housing body (10), and It is formed as an expansion plate (25) that extends from the lower end of the shaft portion (21) and is formed with a diameter larger than the diameter of the shaft portion (21), and A fastening member (n) is configured to be fastened to the upper part of the above-mentioned rotating shaft (20) so that the rotating shaft (20) does not detach from the housing body (10), and a bearing (b) is configured to be fitted between the air bushing (30) and the fastening member (n) before the fastening member (n) is fastened. A rotating assembly for a cleaning machine equipped with an air bearing, characterized in that a bearing (b) is formed between the upper part of the expansion plate (25) and the lower part of the air bushing (30).
  6. In Paragraph 5, The above bearing (b) is, A rotating assembly for a cleaning machine equipped with an air bearing, characterized by being formed with a diameter larger than the lower and upper diameters of the air bushing (30).
  7. In Article 1, The above ultrasonic nozzle (50) is, A rotary assembly for a cleaning machine equipped with air bearings, characterized by having two or more air bearings positioned facing each other and formed at an angle from top to bottom.

Description

Rotation assembly for cleaner with air bearing The present invention relates to a rotary assembly for a cleaning machine equipped with an air bearing, and more specifically, to a technology in which, when a rotating shaft rotates due to the spray pressure of an ultrasonic nozzle by supplying air, an air bearing is formed inside by the air supplied from the outer surface, thereby enabling the rotating shaft to rotate smoothly in a non-contact manner without a separate bearing inside. Typically, a PCB has a stacked structure of conductors and insulators in the form of a substrate, and it can mount various components such as semiconductors, capacitors, and resistors, and serves to provide electrical connections between components. By enabling the efficient design of electrical lines, the PCB reduces the size of electronic devices, increases performance and productivity, and is an indispensable custom electronic component for the final implementation of circuit designs. These PCBs are applied and used in various fields. First, if we look at conventional technologies, Patent No. 10-1975379 (Patent) describes a technology relating to a rotary nozzle assembly comprising: a first body extending in a first direction and into which compressed gas is injected; a second body rotating relative to the first body with the first direction as a central axis and extending to both ends; a spray nozzle installed at both ends of the second body and having a groove on the inner surface through which the compressed gas passes; and a pressure relief opening disposed between the first body and the second body, which is opened and closed by moving the second body in the first direction. The aforementioned prior art is configured such that a second body rotates on a first body, and provides a structure in which a bearing is configured for smooth rotation when the second body rotates. However, the above-mentioned conventional technology has the problem that when the second body rotates inside the first body, frictional resistance is inevitably generated by the bearing or other structures, and foreign substances such as grinding and grease scattering due to friction are inevitably generated, making long-term use impossible. FIG. 1 is a perspective view showing a preferred embodiment of the present invention. FIG. 2 is an exploded view showing a preferred embodiment of the present invention. FIG. 3 is a front view showing a preferred embodiment of the present invention. FIG. 4 is a cross-sectional view illustrating a preferred embodiment of the present invention. FIG. 5 is an enlarged view showing a preferred embodiment of FIG. 4 a, b, and c. FIG. 6 is an exploded view showing a preferred embodiment of the present invention. FIG. 7 is an exploded view showing a preferred embodiment of the present invention. The present invention relates to an air bushing for a cleaning machine equipped with an air bearing, and more specifically, to a technology in which, when a rotating shaft rotates due to the spray pressure of an ultrasonic nozzle by supplying air, an air bearing is formed inside by the air supplied from the outer surface, thereby enabling the rotating shaft to rotate smoothly in a non-contact rotational manner without a separate bearing inside. Hereinafter, the preferred configuration and operation of the present invention for achieving the above objective in relation to the attached drawings will be described with reference to FIGS. 1 to 7 as follows. First, before describing the present invention, looking at its configuration, as illustrated in FIGS. 1 and 2, the air bushing for a cleaning device that receives air from the outside and rotates by the force of air injection to clean a PCB comprises: a housing body (10) formed with upper and lower ends penetrating and an air hole (11) formed on the outer side extending to the inside, configured to receive air through the air hole (11) and form an air bearing inside; a rotating shaft (20) inserted into the interior of the housing body (10) and configured with upper and lower ends penetrating vertically to supply and discharge air through the penetrating parts; an air bushing (30) made of a graphite material and fitted onto the outer circumference of the rotating shaft (20); a nozzle body (40) fastened to the lower part of the rotating shaft (20) and configured to receive and discharge air from the rotating shaft (20); and a nozzle body (40) configured to be spaced apart from each other at the lower part of the nozzle body (40) and receiving air from the nozzle body (40). It is configured to include an ultrasonic nozzle (50) that discharges to the outside and rotates the rotation shaft (20) and cleans the PCB through the discharge pressure. That is, in the present invention, when air is supplied through the air hole (11), an air bearing (b) is formed between the housing body (10) facing the inner and outer sides of the air bushing (30) and the inner side and the outer side of the rotati