JP2005199153A - Air cleaning apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently carry out air cleaning at high accuracy by carrying out elimination of a foreign matter from a member to be cleaned and exhaust to the outside utilizing Coanda effect of air stream. <P>SOLUTION: In the apparatus, the air stream injected from an air stream injection part 9 flows to an air cleaning part 29 along a first curved part 8b of an air stream control member 8 by the Coanda effect and after the foreign matter deposited on the member 2 to be cleaned is blown away and eliminated, it flows to an air discharge part 10 along a second curved part 2b while taking in the foreign matter. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an air cleaning device that is installed during an assembly process of an electronic device or the like and removes dust and the like attached by blowing an air flow onto an assembly member or the like.

  In various electronic devices and the like, a display such as a liquid crystal display is built with a display surface facing a display window opened in a housing, and various displays are performed by this display. In an electronic device or the like, a transparent panel formed of a transparent synthetic resin or glass or the like is assembled to a display window so that the display is protected or the internal sealability is maintained.

  In the case of an electronic device or the like, particularly in the case of a transparent panel made of a synthetic resin, it has a characteristic that it is easily charged. ) Adheres with strong adhesion. In an electronic device or the like, when a transparent panel with a foreign substance attached to the inner surface is combined with a display window and cannot be removed from the outside, it must be disassembled and reassembled.

  In the assembly process of electronic devices, etc., so-called air blow processing is performed in which compressed air guided from compressed air pipes installed in the factory is blown to the housing or transparent panel to remove the adhered foreign matter. Is done. In the assembly process of electronic devices and the like, various problems also occur when performing the air blowing process. For example, the use of an adhesive having a high initial tack as disclosed in Patent Document 1 can cope with the problem. I was planning.

  Air blow processing is often performed not only in the assembly process described above, but also in machining processes such as drilling, cutting, or grinding, in order to remove chips and the like from the processing location and promote drying, This is a process that is generally performed in various fields. In Patent Document 2, a blow injection unit having a Coanda effect characteristic is disposed opposite to a through-hole drilled in a circuit board, and an air flow injected from the blow injection unit is efficiently applied to the circuit board by the Coanda effect. An air cleaning device is disclosed that is sprayed onto the through hole to remove foreign matter from the inside of the through hole.

  As is well known, the Coanda effect means that a gas or liquid jet tends to flow along a curved surface even when the gap between the jet axis and the curved surface is separated. It is a characteristic. In the air cleaning device disclosed in Patent Document 2, the flow velocity is increased by the outer end portion of the blow injection device formed in an arc shape facing the through hole, and the suction action to the through hole is generated. Let me.

JP 2002-129124 A JP 2000-294906 A

  In the assembly process of electronic devices and the like, the assembly is generally performed in a simple clean booth environment, but as described above, the air blow process is performed in the pre-process or the appropriate process of the transparent panel assembly process. In the assembly process of electronic devices and the like, there has been a problem that the foreign matter blown off by the air blowing process floats in the clean booth, thereby deteriorating the environment and repeating a vicious circle that adheres again to the assembly members and the like. Moreover, in the assembly process of electronic devices, foreign matter adheres to the charged transparent panel due to a large adhesion force, so air blow processing must be performed with a relatively large injection pressure, and in the clean booth. Foreign matter floats over a wide area.

  In an assembly process of a conventional electronic device or the like, an air cleaning device constituted by an air gun, a vacuum device (vacuum pump device) or the like is installed in a clean booth. The air cleaning device sprays an air flow onto an assembly part or the like by an air gun to blow off the adhered foreign matter, and sucks the air flow together with the foreign matter by a vacuum device and exhausts it from the clean booth to the outside.

  Such an air cleaning device requires a large space in the process because the vacuum device is relatively large, and covers a wide range when using an air gun with a large injection pressure that blows away foreign matter adhering with a large adhesion force. There is a need for a larger vacuum device that has the ability to suck floating foreign matter. For this reason, the air cleaning apparatus has a problem that the clean booth is enlarged and the equipment such as an air purifier and a filter for maintaining the clean environment is enlarged to increase the equipment cost.

  The technique disclosed in Patent Document 1 described above is intended for a process of joining a transparent panel to a display window using a predetermined adhesive, and thus limits the degree of freedom of the casing structure of the electronic device. Also in the technique of Patent Document 1, it is necessary to address the problem by requiring an air gun, a vacuum device, or the like equivalent to the above-described air cleaning device.

  Moreover, although the technique of patent document 2 mentioned above is trying to improve the efficiency of an air blow process using the Coanda effect of an airflow, the vacuum apparatus etc. which collect the foreign material removed from the circuit board are required. To do. Therefore, in the technique of Patent Document 2, it is necessary to deal with the same problem as the above-described air cleaning device.

  The present invention uses a Coanda effect of an air flow to remove foreign substances from a member to be cleaned and exhaust them to the outside so that high-precision air cleaning can be efficiently performed. It has been proposed for the purpose of providing a cleaning device.

  An air cleaning device according to the present invention that achieves the above-described object includes a base, an air flow control member, a cradle, an air flow injection unit, and an exhaust unit. The air flow control member is composed of a curved member in which the first curved surface portion and the second curved surface portion are continuous with the vertex portion interposed therebetween, and the base portion is opposed to the base portion with a predetermined interval. An air cleaning unit is formed between the two. The cradle is movably provided on the base, places the member to be cleaned, and transfers it to an air cleaning unit configured between the base and the apex of the bending member. The air flow injection means is provided with an injection portion facing the air cleaning portion, and blows an air flow from the injection portion toward the first curved surface portion of the air flow control member. The exhaust means is disposed to face the injection portion of the air flow injection means with the air flow control member interposed therebetween, and exhausts the air flow that has passed through the air cleaning portion and has flowed along the second curved surface portion to the outside. .

  In the air cleaning device, the air flow blown out from the injection portion of the air flow injection means flows along the first curved surface portion of the air flow control member due to the Coanda effect, and then wraps around the apex portion and then enters the second curved surface portion. Flowing along. In the air cleaning device, the air flow flows at a maximum flow rate in an air cleaning section formed between the base with the opposed space narrowed and the apex of the air flow control member. In the air cleaning device, the air flow that has passed through the air cleaning portion flows along the second curved surface portion, is guided to the exhaust means, and is discharged to the outside by the exhaust means.

  In the air cleaning device, a member to be cleaned is placed on a receiving table that is moved on a base and is transferred to an air cleaning unit. In the air cleaning device, air cleaning is performed by blowing off and removing foreign matter adhering to the member to be cleaned by blowing an air flow that flows through the air cleaning unit to the member to be cleaned. In the air cleaning device, the cradle is moved back to the initial position, and the member to be cleaned after the air cleaning is taken out and supplied to the next process.

  In the air cleaning device, the air flow that has taken in the foreign matter through the air cleaning portion flows along the second curved surface portion and is guided to the exhaust means. In the air cleaning device, the air flow that has taken in the foreign matter is released to the outside by the exhaust means.

  According to the air cleaning device of the present invention configured as described above, the air flow blown from the injection portion of the air flow injection means has a flow velocity along the first curved surface portion of the air flow control member by the Coanda effect. After expelling and removing the foreign matter adhering to the member to be cleaned while blowing to the air cleaning portion while accelerating, the foreign matter is taken in along the second curved surface portion while being taken in and exhausted. Therefore, according to the air cleaning device, the foreign matter adhering to the member to be cleaned with a large adhesion force is blown away efficiently without ejecting a high-pressure air flow, and the removed foreign matter is released to the outside without being scattered. Therefore, reattachment to the member to be cleaned is prevented, and high-precision air cleaning can be performed. According to the air cleaning device, since a relatively large and expensive vacuum device is not required, it is possible to reduce the size and the cost.

  Hereinafter, an air cleaning device 1 shown in the drawings as an embodiment of the present invention will be described in detail. The air cleaning device 1 is installed and used in a process of assembling the mobile phone 2, and a display window portion in which a liquid crystal display is mainly arranged in the previous process of the assembly process of the transparent panel using the mobile phone 2 as a member to be cleaned. Perform air cleaning. The air cleaning device 1 is appropriately installed and used not only in the display window portion but also in other processes of the mobile phone 2 and widely used in other than the assembly process of the mobile phone 2.

  As shown in FIGS. 1 to 3, the air cleaning device 1 includes a base 3, a receiving base 4 on which a mobile phone 2 is placed and reciprocated in a longitudinal direction on a plate 3 a of the base 3, a base A box body 6 that is assembled on the table 3 and forms the cleaning space 5 therein, and an air flow control member 7 and an exhaust guide member 8 provided in the box body 6 are provided. The air cleaning device 1 is disposed on one side of the box body 6, and an air flow injection unit 9 that ionizes an air flow supplied from a clean air supply pipe (not shown) piped in the factory and blows it into the cleaning space 5. Is provided. The air cleaning device 1 includes an air flow exhaust unit 10 that is disposed to face the air flow injection unit 9 with the cleaning space 5 of the box body 6 interposed therebetween and exhausts the air flow from the cleaning space unit 5.

  The air cleaning device 1 includes an air ionization device (ionizer) 11 in which an air flow injection unit 9 generates an ionized air flow from a supplied air flow, a stand member 12 erected on a base 3, and the stand member 12 A pipe holder 13 attached to the nozzle body 15, a nozzle head 15 that faces the cleaning space portion 5 through a guide opening 14 formed in the front panel 6 a of the box body 6, and the nozzle head 15 is provided at the tip to provide a pipe. The air supply pipe 16 is held by the holder 13. The air cleaning device 1 includes an exhaust fan device 18 in which an air flow exhaust unit 10 is assembled to an exhaust port 17 formed in a ceiling panel 6b of a box body 6, and an exhaust gas connected to the exhaust fan device 18 and a dust removing device (not shown). It is constituted by a pipe 19 or the like.

  The air cleaning device 1 is provided with mounting brackets 20a and 20b each having a plurality of mounting holes on the bottom surface of the base 3, and anchor bolts whose details are omitted are driven into the floor through the mounting holes. It is installed at a predetermined location in the process. The entire air cleaning device 1 is configured to be small, light and simple, and can be easily moved and installed at an appropriate place. The air cleaning device 1 can be moved more easily by providing a caster or the like on the base 3, for example.

  The air cleaning device 1 includes a plate 3a of a base 3 whose main surface is divided into two regions in the longitudinal direction, and a box body 6 is assembled in one region to constitute a substantially closed air cleaning unit which will be described in detail later. In addition, the other area is configured as a work table area 3b for receiving the mobile phone 2 supplied from the previous process, for example. In the air cleaning device 1, as shown in FIG. 1, the cellular phone 2 is attached and detached while the cradle 4 is pulled out from the box body 6 to the work table area 3 b.

  The cradle 4 is moved in and out of the cleaning space 5 in the box body 6 through the guide opening 14 on the plate 3a from the work table region 3b. When the cradle 4 is moved into the cleaning space 5, the cradle 4 abuts against a stopper 21 provided on the plate 3a and is positioned. The cradle 4 moves a slide plate 22 that slides in the longitudinal direction on the main surface of the plate 3 a, a cradle member 23 that positions and mounts the mobile phone 2 in combination with the slide plate 22, and moves the slide plate 22. A handle 24 and the like for operating are provided.

  The cradle 4 is provided with a slide guide structure comprising a guide groove in the longitudinal direction and a guide convex portion fitted in the guide groove, although illustration is omitted from the plate 3a and the slide plate 21. By grasping and pushing and pulling 24, it is slid on the plate 3a. Of course, the slide guide structure is not limited to such a structure, and an appropriate transfer guide structure is used, and if the slide plate 22 is smoothly moved on the plate 3a, there is no need to provide it. .

  As shown in FIG. 2, the cradle 4 is formed integrally with a plurality of mounting bracket pieces 22 a on the slide plate 22, and the cradle member 23 is attached to the slide plate 22 by being screwed to the mounting bracket pieces 22 a. It is integrated. Although the details of the cradle 4 are omitted, the height of the cradle member 23 with respect to the slide plate 22 is made by making at least one mounting hole of the cradle member 23 and the mounting bracket piece 22a into a long hole in the height direction. An adjustment mechanism for adjusting the position is configured. Accordingly, the cradle 4 is appropriately adjusted in the distance between the mobile phone 2 and an air flow control member 7 to be described later, so that the air flow is blown to the mobile phone 2 in an optimal state. Note that the height adjustment mechanism is not limited to such a structure, and may be configured by a structure including a rack and a pinion, a structure including a click convex portion and a click concave portion, or the like.

  The cradle 4 is provided with a fitting recess for holding the outer peripheral portion of the mobile phone 2, although details are omitted from the cradle member 23, and the mobile phone 2 is positioned and placed and blown with airflow. Also keep it from moving. Since the cradle 4 is configured to be divided into a detachable slide plate 22 and a cradle member 23, for example, even when the external specification of the mobile phone 2 is changed, the cradle member 23 can be dealt with by replacement. Is possible. The cradle 4 is designed to enhance compatibility with not only the mobile phone 2 but also various electronic devices.

  For example, the cradle 4 is provided with a feed mechanism for automatically reciprocating the base 3 on the slide plate 22 at a predetermined timing. The placed cradle member 23 may be attached and detached. With this structure, the cradle 4 can be installed even during the automatic assembly process.

  As described above, the box body 6 surrounds one region of the base 3 and forms the cleaning space portion 5 therein. As described above, the box body 6 includes a front panel 6a formed with the guide opening 14 that opens the workbench region 3b side, a ceiling panel 6b formed with an exhaust port 17, a back panel 6c, both side panels 6d, 6e is combined in a box shape with an open bottom. The box body 6 is installed by fixing the back panel 6c and the both side panels 6d and 6e to the base 3 at their lower portions.

  In the box body 6, the facing interval between the side panels 6 d and 6 e is held by the interval holding shaft 25. The box body 6 is provided with a space holding shaft 25 positioned in an internal space of an air flow control member 7 described later, so that the air flow in the cleaning space 5 is not disturbed by the space holding shaft 25. The mechanical strength is improved. Note that the box body 6 is configured such that at least one of the side panels 6d and 6e is made of, for example, a conductive transparent acrylic resin panel so that the state in the cleaning space 5 can be visually recognized from the outside. Thus, it is possible to easily confirm the cleaning state and the necessity of cleaning work of the cleaning space 5.

  As described above, the box body 6 has the guide opening 14 formed in the front panel 6a that divides the work table area 3b. The guide opening 14 is formed with an opening size that allows the cradle 4 to enter and leave the cleaning space 5 with the mobile phone 2 placed thereon, and the nozzle head 15, which will be described in detail later, is disposed in the cleaning space 5. Let us face you.

  The box body 6 is located on the back panel 6c side of the ceiling panel 6b and has the circular exhaust port 17 described above. The box body 6 is assembled with an exhaust fan mounting bracket 26 that faces the exhaust port 17 and straddles the ceiling panel 6b and has legs fixed to the side panels 6d and 6e. An opening concentric with the exhaust port 17 is formed in the exhaust fan mounting bracket 26, and the exhaust fan device 18 is mounted so as to face the cleaning space 5 through this opening.

  In the box body 6, an opening 27 is also formed in the back panel 6c as shown in FIG. The opening 27 allows air to flow from the outside into the cleaning space 5 that is exhausted by the exhaust fan device 18 to be in a negative pressure state, and the flow path of the air flow that has been in a negative pressure state due to the increased flow velocity. As a result, the air flow in the cleaning space 5 is promoted so that the mobile phone 2 can be cleaned more efficiently.

  The air flow control member 7 is made of a thin plate such as an aluminum plate having a width dimension substantially equal to the opposing distance between the opposite side panels 6d and 6e of the box body 6 and having a major surface as a smooth surface, and has a substantially parabolic shape as a whole. To be curved. As shown in FIG. 2, the air flow control member 7 is provided with mounting pieces 28a and 28b on both side edges in the vicinity of both ends in the longitudinal direction. The air flow control member 7 fixes one mounting piece portion 28a to the side panels 6d and 6e on the side of the front panel 6a and facing the upper portion of the guide opening 14, and the other mounting piece portion. 28 b is attached to the inside of the box body 6 by fixing it on the ceiling panel 6 b side and facing the front edge of the exhaust port 17.

  When the air flow control member 7 is attached to the box body 6, the first curved surface portion 7b on the front panel 6a side and the back panel are sandwiched between the apex portion 7a facing the base 3 with a predetermined interval. The second curved surface portion 7c on the 6c side is continuous. In the air flow control member 7, the first curved surface portion 7 b forms a curved surface that faces the guide opening 14 toward the vertex portion 7 a while being gradually curved inward. In the air flow control member 7, the second curved surface portion 7 c forms a curved surface toward the exhaust port 17 while being gradually curved from the apex portion 7 a.

  The air flow control member 7 is set to a height position at which the apex portion 7a is allowed to pass through the mobile phone 2 that is placed on the base 4 and transferred by receiving the facing distance of the base 3 from the plate 3a. As will be described later, the air flow control member 7 causes the air flow injected from the air flow injection unit 9 to flow along the first curved surface portion 7b, the apex portion 7a, and the second curved surface portion 7c by the Coanda effect. The air cleaning unit 29 is configured by being set at a height position where the air flow is blown to the mobile phone 2 in the vicinity of the apex portion 7a where the flow velocity of the air flow is fastest. Specifically, the air flow control member 7 is attached to the box body 6 with the distance between the apex portion 7a and the mobile phone 2 set to 7 mm to 10 mm.

  The exhaust guide member 8 is also formed in a plate shape using a thin plate such as an aluminum plate having a width dimension substantially equal to the facing distance between the opposite side panels 6d and 6e of the box body 6 and having a major surface as a smooth surface. Become. As shown in FIG. 2, the exhaust guide member 8 is provided with mounting pieces 30a and 30b on both side edges in the vicinity of both ends in the longitudinal direction. The exhaust guide member 8 fixes one mounting piece portion 30a to the apex portion 7a of the air flow control member 7 at a position near the stopper 21 with respect to the side panels 6d and 6e. The part 30b is attached to the inside of the box body 6 by fixing it on the ceiling panel 6b side and facing the rear edge of the exhaust port 17.

  When the exhaust guide member 8 is attached to the box body 6, the exhaust guide member 8 faces the second curved surface portion 7 c of the air flow control member 7 with a predetermined interval, and the air flow flowing around the apex portion 7 a A flow path leading to the flow exhaust unit 10 is configured. In the vicinity of the air cleaning part 29, the lower end part of the exhaust guide member 8 faces the second curved surface part 7c with an interval of about 20 mm. The exhaust guide member 8 is attached to the box body 6 with a lower end portion defining a gap 8a between the exhaust guide member 8 and the base 3. The gap 8a is used for air taken in from the opening 27 formed in the back panel 6c. Configure the inlet.

  In the air cleaning device 1, as described above, the air flow flows on the outer peripheral surface of the air flow control member 7 along the first curved surface portion 7b-the apex portion 7a-the second curved surface portion 7c due to the Coanda effect. The exhaust guide member 8 does not have to be attached in the box body 6. In the air cleaning device 1, as described above, the inflow function of the air taken in from the opening 27, and the air flow control member 7 wrap around the apex portion 7 a to reliably guide the air flow to the exhaust port 17 for some reason. Even when turbulent flow is caused by the above, an exhaust guide member 8 is provided to prevent the diffusion of foreign matter in the box body 6.

  In the air cleaning device 1, an ionized air flow is blown into the cleaning space 5 from the air flow injection unit 9. The air cleaning device 1 generates an ionized air flow in the attached air ionizer 11. As shown in FIG. 2, the air ionizer 11 is connected to an air supply pipe (not shown) that is connected to the factory by a connection pipe 31 and supplies clean air to each process, and an air flow is supplied from the air supply pipe. Is done. The air cleaning device 1 is provided with a cock (not shown) in the middle of the connection pipe 31, for example, and switching the supply and stop of clean air to the air ionization device 11 by opening and closing the cock.

  As is well known, the air ionizer 11 generates an ionized air flow by, for example, corona discharge, and sends the ionized air flow to the air supply pipe 16. The air cleaning device 1 discharges static electricity charged in the mobile phone 2 and the foreign matter by blowing an ionized air flow onto the mobile phone 2 so that the adhesion of the foreign matter is reduced. Accordingly, the air cleaning device 1 eliminates the need for measures such as increasing the pressure of the air flow by the pump to increase the removal capability of the foreign matter, and suppresses the occurrence of turbulent air flow due to the pressure increase.

  As described above, the nozzle head 15 is provided at the tip of the air supply pipe 16, and the air flow ionized from the nozzle head 15 is ejected to the cleaning space 5 in the box body 6. The air supply pipe 16 is supported by a pipe holder 13 of a stand 12 attached to the base 3 at an intermediate position, and is appropriately routed. Although the detailed structure of the pipe holder 13 is omitted, the height position of the pipe holder 13 is adjustable with respect to the pipe holder 13 and is supported so as to swing freely. The pipe holder 13 sandwiches and supports the air supply pipe 16 with a pair of support pieces, and the support piece is expanded so that the air supply pipe 16 can be appropriately attached and detached.

  The nozzle head 15 faces the first curved surface portion 7 b of the air flow control member 7 through the guide opening 14 of the box body 6 by appropriately adjusting the support posture of the air supply pipe 16 by the pipe holder 13. Arranged. In detail, the nozzle head 15 is arranged such that the nozzle port is substantially parallel to the first curved surface portion 7b and directed toward the base side, and air ionized from the nozzle port with an injection pressure of 0.5 MPa, for example. The flow is jetted toward the first curved surface portion 7b. The nozzle head 15 faces the base 3 from the guide opening 14 into the cleaning space 5 at a height that does not interfere with the insertion and removal of the cradle 4 from the guide opening 14. Adjusted position.

  In the air cleaning device 1, the air flow blown from the nozzle head 15 to the first curved surface portion 7b passes through the air cleaning portion 29 and flows into the exhaust port 17 along the second curved surface portion 7c as described above. . In the air cleaning device 1, as described above, the exhaust fan device 18 is attached to the exhaust port 17 via the exhaust fan mounting bracket 26. As is well known, the exhaust fan device 18 exhausts an air flow in which foreign matter is taken in from the cleaning space 5 by a fan rotated by a motor. An exhaust pipe 19 is connected to the exhaust fan device 18 on the exhaust side, and an air flow is exhausted through the exhaust pipe 19 to an exhaust duct (not shown) installed in the factory.

  The exhaust fan device 18 is powered on in conjunction with the air flow injection operation from the air flow injection unit 9 so that the exhaust operation from the cleaning space 5 is performed. As the exhaust fan device 18, for example, an exhaust fan device 18 having an exhaust port diameter of about 60 mm is used.

  In the air cleaning device 1, as described above, the air flow injected from the air flow injection unit 9 flows into the exhaust port 17 along the outer peripheral surface of the air flow control member 7 by the Coanda effect. Eliminates the need for a large-scale vacuum device that sucks and exhausts airflow containing foreign matter from The air cleaning device 1 can be downsized as a whole and can be manufactured at low cost by using a small and inexpensive exhaust fan device 18.

  In the air cleaning device 1 configured as described above, the air flow supplied from the air supply pipe is ionized by the air ionization device 11 and supplied to the nozzle head 15 via the air supply pipe 16. In the air cleaning device 1, an air flow is blown from the nozzle head 15 disposed facing the guide opening 14 of the box body 6 toward the first curved surface portion 7 b of the air flow control member 7.

  In the air cleaning device 1, as indicated by arrows in FIG. 4, the apex portion 7 a and the base 3 constituting the air cleaning portion 29 while the air flow gradually increases the flow velocity along the first curved surface portion 7 b by the Coanda effect. It flows toward the plate 3a. In the air cleaning device 1, the air cleaning unit 29 minimizes the flow width (height) of the air flow, so that the air flow in the air cleaning unit 29 maximizes the flow velocity and enters the inside of the box body 6. It flows through the configured cleaning space 5.

  In the air cleaning device 1, the airflow flows around the apex portion 7 a due to the Coanda effect and still flows toward the upper exhaust port 17 along the second curved surface portion 7 c of the airflow control member 7. In the air cleaning device 1, external air also flows from the opening 27 formed in the back panel 6 c to promote air flow in the cleaning space 5. In the air cleaning device 1, the air flow that flows to the exhaust port 17 along the outer peripheral surface of the air flow control member 7 is exhausted from the cleaning space 5 to the outside by the exhaust fan device 18. In the air cleaning device 1, an ionized air flow continuously flows in the air cleaning portion 29 configured between the apex portion 7 a of the air flow control member 7 and the plate 3 a of the base 3 in this way. .

  In the air cleaning device 1, the mobile phone 2 is positioned and placed on the receiving member 23 of the receiving table 4 drawn out to the work area 3 b of the base 3. In the air cleaning device 1, the pedestal 4 is moved from the guide opening 14 into the box body 6 and abuts against the stopper 21, so that the cellular phone 2 is opposed to the apex 7 a of the air flow control member 7. Transfer to the cleaning unit 29. In detail, the mobile phone 2 has the display window portion facing the apex portion 7a.

  In the air cleaning device 1, the air flow flowing through the air cleaning unit 29 is blown to the mobile phone 2, thereby removing foreign matter attached to the mobile phone 2 and taking it into the air flow to the air flow exhaust unit 10. And send it out. In the air cleaning device 1, the static electricity charged in the mobile phone 2 and the foreign matter attached thereto is discharged by blowing an ionized air flow onto the mobile phone 2. Therefore, in the air cleaning device 1, the adhesion force of the foreign matter to the mobile phone 2 is reduced, and it is surely blown away by the air flow and removed.

  In the air cleaning device 1, the air flow in the air cleaning unit 29 flows at a high flow rate, so that a negative pressure is generated along the surface of the mobile phone 2, and the flow of external air flowing from the opening 27 is also generated. Foreign matter adhering to the inside of the telephone 2 is also efficiently sucked and removed. In the air cleaning device 1, the foreign matter removed from the mobile phone 2 is taken in and sent out to the air flow without floating in the air cleaning unit 29, thereby preventing reattachment to the mobile phone 2.

  In the air cleaning device 1, the handle 24 is grasped to pull the cradle 4 from the box body 6 to the work area 3 b of the base 3, and the mounted mobile phone 2 is removed. The mobile phone 2 is supplied to the next process, and a transparent panel is attached to the display window. The mobile phone 2 can be assembled with high accuracy by preventing the appearance defect due to the presence of the foreign matter by reliably removing the foreign matter on the display surface and display window portion of the display by the air cleaning device 1. become.

  In the air cleaning device 1, the air flow that has taken in foreign matter flows from the air cleaning unit 29 to the exhaust port 17 along the second curved surface portion 7 c of the air flow control member 7 and is sucked into the exhaust fan device 18 for cleaning. The air is exhausted from the space 5. In the air cleaning device 1, the air flow is exhausted from the exhaust fan device 18 to the exhaust duct via the exhaust pipe 19, thereby maintaining the inside of the process in a clean environment. In the air cleaning device 1, the cradle 4 is also simultaneously air-cleaned in the cleaning space 5, so that it can be kept clean and used continuously.

  The air cleaning device 1 is installed and used not only in the assembly process of the mobile phone 2 described above but also in the assembly process of various electronic devices. The air cleaning device 1 constantly supplies an air flow into the cleaning space 5 to continuously perform the air cleaning of the mobile phone 2. For example, in a state where the mobile phone 2 is transferred into the cleaning space 5. You may make it perform the intermittent operation which injects an airflow. For example, the air cleaning device 1 may be provided with a sensor in the guide opening 14, and the sensor may detect the entrance / exit of the cradle 4 to control the injection of the air flow.

  The air cleaning device 1 is designed so that the mobile phone 2 can be attached and detached by putting the cradle 4 in and out of the box body 6. For example, the air cleaning device 1 may be installed during the process of continuously transporting the mobile phone 2. Also good. In this case, in the air cleaning device 1, the base 3 is, for example, a conveyance belt, and a box body 6 is installed in a part thereof. In the air cleaning device 1, the cradle 4 transferred from the guide opening 14 of the front panel 6 a to the inside of the box body 6 is conveyed from the opening 27 of the back panel 6 c to the next process. Perform air cleaning.

It is a perspective view of an air cleaning device shown as an embodiment. It is a side view of the air cleaning apparatus which removes and shows the side panel of a box body. It is a front view of an air cleaning device. It is a principal part longitudinal cross-sectional view which shows typically the flow state of an airflow.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Air cleaning apparatus, 2 Mobile phone, 3 base, 4 cradle, 5 cleaning space part, 6 box body, 7 air flow control member, 8 exhaust guide member, 8a vertex part, 8b 1st curved surface part, 8c 2nd Curved surface portion, 9 Air flow injection portion, 10 Air flow exhaust portion, 11 Air ionizer, 12 Stand member, 13 Pipe holder, 14 Guide opening, 15 Nozzle head, 16 Air supply pipe, 17 Exhaust port, 18 Exhaust fan device , 21 Stopper, 22 Slide plate, 3 Receiving member, 26 Exhaust fan mounting bracket, 27 Opening, 29 Air cleaning part

Claims (5)

The base,
The first curved surface portion and the second curved surface portion are made of a curved member with the apex portion interposed therebetween, and the apex portion is opposed to the base with a predetermined interval. An air flow control member constituting an air cleaning unit,
A cradle that is movably provided on the base and places a member to be cleaned and transfers it to the air cleaning unit;
An air flow injection means that is provided with an injection portion facing the air cleaning portion, and blows an air flow from the injection portion toward the first curved surface portion of the air flow control member,
An exhaust unit that is disposed to face the injection unit of the air flow injection unit across the air flow control member and exhausts the air flow that has passed through the air cleaning unit to the outside,
The air flow flows to the air cleaning portion while increasing the flow velocity along the first curved surface portion of the air flow control member due to the Coanda effect, and removes foreign matter adhering to the member to be cleaned, and the second curvature. An air cleaning device characterized in that it is exhausted to the outside together with the foreign matter taken in along the surface portion to the exhaust means.   An air ionization unit is attached to the airflow ejection unit, and the member to be cleaned is discharged by blowing an ionized airflow from the ejection unit toward the first curved surface portion of the airflow control member. The air cleaning device according to claim 1.   The height position is adjusted according to the external specification of the member to be cleaned, wherein the cradle is provided to the base via a height position adjusting mechanism. Air cleaning device.   An exhaust guide member is provided opposite to the exhaust side portion of the air flow control member, and exhaust that guides the air flow that has passed through the air cleaning portion between the air flow control member and the exhaust guide member to the exhaust means. The air cleaning device according to claim 1, wherein the air cleaning device constitutes a flow path.   2. The electronic device according to claim 1, wherein the member to be cleaned is an electronic device in which a display surface is built in a display window opened in a housing and a transparent panel is assembled to the display window. Air cleaning device.

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