JP2017030936A - Levitation device and manufacturing method of levitation device - Google Patents

Levitation device and manufacturing method of levitation device Download PDF

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JP2017030936A
JP2017030936A JP2015153599A JP2015153599A JP2017030936A JP 2017030936 A JP2017030936 A JP 2017030936A JP 2015153599 A JP2015153599 A JP 2015153599A JP 2015153599 A JP2015153599 A JP 2015153599A JP 2017030936 A JP2017030936 A JP 2017030936A
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hole
surface hole
hole portion
curved plate
levitation device
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JP6695107B2 (en
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太空美 市川
Takumi Ichikawa
太空美 市川
和秀 西野
Kazuhide Nishino
和秀 西野
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Techno Smart Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a levitation device that can be easily manufactured at low cost, and a manufacturing method of the levitation device.SOLUTION: Each jetting hole 21 provided in a curved plate-like part 111 comprises a bottomed outer face hole part 31, a bottomed inner face hole part 41, and a communication opening 51 provided at peripheral edge parts of bottom faces of both hole parts. A fluid inside a levitation device is jetted outside the levitation device through the jetting hole 21. More specifically, the fluid inside the levitation device passes from an opening of the inner face hole part 41 through the inside of the inner face hole part 41, the communication opening 51, and the inside of the outer face hole part 31 in this order and is jetted outside the levitation device from an opening of the outer face hole part 31. Each of the outer face hole part 31 and the inner face hole part 41 has a large inner size that can be formed by a general tool, but the inner size of the communication opening 51 is small. This allows the jetting hole 21 suppressing jetting of a large quantity of the fluid to be obtained easily, and thereby the levitation device can be manufactured easily.SELECTED DRAWING: Figure 6

Description

本発明は、シート状部材を浮揚させる浮揚装置及び浮揚装置の製造方法に関する。   The present invention relates to a levitating apparatus for levitating a sheet-like member and a method for manufacturing the levitating apparatus.

浮揚装置は、Ｕ字状に湾曲した湾曲鋼板を備える（特許文献１，２参照）。
特許文献１，２に記載の浮揚装置が備える湾曲鋼板には突状部が形成してある。突状部は湾曲鋼板の外面側から見ると凹状、内面側から見ると凸状をなす。突状部には開孔部が設けられている。浮揚装置においては、湾曲鋼板の内部から開孔部を通って外部に流体が噴出する。 The levitation device includes a curved steel plate curved in a U shape (see Patent Documents 1 and 2).
The curved steel plate included in the levitation device described in Patent Literatures 1 and 2 has a protruding portion. The projecting portion is concave when viewed from the outer surface side of the curved steel plate and convex when viewed from the inner surface side. An opening is provided in the protruding portion. In the levitation device, fluid is ejected from the inside of the curved steel plate to the outside through the opening.

帯状のシート状部材は、噴出する流体によって湾曲鋼板の外面から浮揚した状態で、湾曲鋼板の外面に沿って自身の長手方向に搬送される。   The belt-like sheet-like member is conveyed in the longitudinal direction of the belt-like sheet member along the outer surface of the curved steel plate in a state of being levitated from the outer surface of the curved steel plate by the ejected fluid.

特許第４２１５２９９号公報Japanese Patent No. 4215299 特許第５１５２４７７号公報Japanese Patent No. 5152477

特許文献１，２に記載の浮揚装置を製造するためには、開孔部が設けられた突状部を平坦な鋼板に形成する形成工程と、鋼板を湾曲させて湾曲鋼板を得る鋼板湾曲工程とを実行する必要がある。しかしながら、形成工程は煩雑である。
形成工程に比べれば、平坦な鋼板に貫通孔を形成する穿孔工程は簡易である。そこで、浮揚装置を製造するときに、形成工程に替えて穿孔工程を実行することが考えられる。 In order to manufacture the levitation device described in Patent Literatures 1 and 2, a forming step of forming a protruding portion provided with an opening portion on a flat steel plate, and a steel plate bending step of bending the steel plate to obtain a curved steel plate And need to be executed. However, the formation process is complicated.
Compared to the forming process, the drilling process for forming the through hole in the flat steel plate is simple. Then, when manufacturing a levitating apparatus, it can consider changing to a formation process and performing a drilling process.

ところで、シート状部材に覆われている貫通孔に比べ、シート状部材に覆われていない貫通孔からは流体が噴出し易い。故に、湾曲鋼板には十分に小さな貫通孔を形成する必要がある。何故ならば、貫通孔が大きすぎると、貫通孔から大量の流体が噴出して湾曲鋼板の内部の圧力が大幅に低下するので、シート状部材に覆われている貫通孔から噴出する流体の勢いが削がれるからである。この結果、シート状部材が湾曲鋼板に接触してしまう虞がある。   By the way, compared with the through-hole covered with the sheet-like member, the fluid is easily ejected from the through-hole not covered with the sheet-like member. Therefore, it is necessary to form a sufficiently small through hole in the curved steel plate. This is because if the through-hole is too large, a large amount of fluid is ejected from the through-hole and the pressure inside the curved steel plate is greatly reduced, so the momentum of the fluid ejected from the through-hole covered with the sheet-like member It is because is cut off. As a result, there exists a possibility that a sheet-like member may contact a curved steel plate.

ところが、一般的な工具を用いて十分に小さな貫通孔を形成することは困難である。かといって、十分に小さな貫通孔を形成するために特殊な工具を用意することは、浮揚装置の製造コストの増大につながる。   However, it is difficult to form a sufficiently small through hole using a general tool. However, providing a special tool to form a sufficiently small through hole leads to an increase in the manufacturing cost of the levitation device.

本発明は斯かる事情に鑑みてなされたものであり、その主たる目的は、低コストで容易に製造することができる浮揚装置及び浮揚装置の製造方法を提供することにある。   This invention is made | formed in view of such a situation, The main objective is to provide the manufacturing method of the levitating apparatus and the levitating apparatus which can be manufactured easily at low cost.

本発明に係る浮揚装置は、弧状に湾曲した湾曲板状部を備え、該湾曲板状部を夫々貫通する複数個の噴出孔を通って前記湾曲板状部の内部から外部へ流体が噴出し、噴出する流体によって、シート状部材を前記湾曲板状部の外周面から浮揚させる浮揚装置において、各噴出孔は、前記外周面に設けられた有底の外面穴部と、前記湾曲板状部の内周面に設けられた有底の内面穴部と、前記外面穴部及び内面穴部夫々の底面の周縁部に設けられており、前記外面穴部及び内面穴部を連通する開口とを有し、前記内面穴部の底面の前記外周面からの距離は、前記外面穴部の底面の前記外周面からの距離以下であることを特徴とする。   A levitation device according to the present invention includes a curved plate-like portion curved in an arc shape, and fluid is ejected from the inside of the curved plate-like portion to the outside through a plurality of ejection holes that respectively penetrate the curved plate-like portion. In the levitation apparatus that floats the sheet-like member from the outer peripheral surface of the curved plate-like portion by the ejected fluid, each ejection hole includes a bottomed outer surface hole provided on the outer peripheral surface, and the curved plate-like portion A bottomed inner surface hole provided on the inner peripheral surface of the inner surface, and an opening that communicates with the outer surface hole and the inner surface hole, provided at a peripheral edge of the bottom surface of each of the outer surface hole and the inner surface hole. And the distance from the outer peripheral surface of the bottom surface of the inner surface hole is not more than the distance from the outer peripheral surface of the bottom surface of the outer surface hole.

本発明に係る浮揚装置は、前記内面穴部の底面の前記外周面からの距離は、前記外面穴部の底面の前記外周面からの距離より短く、前記開口は、前記外面穴部及び内面穴部夫々の底面の周縁部から、夫々の内周面における前記底面に隣接する部分に亘って設けられていることを特徴とする。   In the levitation device according to the present invention, the distance from the outer peripheral surface of the bottom surface of the inner surface hole is shorter than the distance from the outer peripheral surface of the bottom surface of the outer surface hole, and the opening includes the outer surface hole and the inner surface hole. It is provided over the part adjacent to the said bottom face in each inner peripheral surface from the peripheral part of the bottom face of each part.

本発明に係る浮揚装置は、各外面穴部に対して複数個の前記内面穴部が前記外面穴部の底面の周縁方向に並設されていることを特徴とする。   The levitation apparatus according to the present invention is characterized in that a plurality of the inner surface hole portions are arranged in parallel in the peripheral direction of the bottom surface of the outer surface hole portion with respect to each outer surface hole portion.

本発明に係る浮揚装置は、前記湾曲板状部の湾曲方向両端部夫々に連なる平板状部を更に備え、各平板状部には前記噴出孔は設けられていないことを特徴とする。   The levitation device according to the present invention further includes a flat plate portion connected to each of both end portions in the bending direction of the curved plate portion, and each flat plate portion is not provided with the ejection hole.

本発明に係る浮揚装置の製造方向は、本発明に係る浮揚装置を製造する方法であって、板状部材の一面に前記外面穴部を設ける一面穿設工程と、前記板状部材の他面に前記内面穴部を設ける他面穿設工程と、前記一面穿設工程及び他面穿設工程の終了後、前記一面を外側に向けて前記板状部材を弧状に湾曲する湾曲工程とを備え、前記一面穿設工程及び他面穿設工程を実行する際には、前記外面穴部の底面の前記一面からの距離が前記内面穴部の底面の前記一面からの距離以上になるよう前記外面穴部及び内面穴部を設けることによって、前記外面穴部及び内面穴部夫々の底面の周縁部に前記外面穴部及び内面穴部を連通する開口を設けることを特徴とする。   The manufacturing direction of the levitation device according to the present invention is a method of manufacturing the levitation device according to the present invention, wherein the one surface drilling step of providing the outer surface hole on one surface of the plate-shaped member, and the other surface of the plate-shaped member And a bending step of bending the plate-like member in an arc shape with the one surface facing outward after completion of the one-surface drilling step and the other-surface drilling step. When performing the one surface drilling step and the other surface drilling step, the outer surface is configured such that the distance from the one surface of the bottom surface of the outer surface hole is equal to or greater than the distance from the one surface of the bottom surface of the inner surface hole. By providing the hole portion and the inner surface hole portion, an opening that communicates the outer surface hole portion and the inner surface hole portion is provided in a peripheral portion of the bottom surface of each of the outer surface hole portion and the inner surface hole portion.

本発明にあっては、湾曲板状部に設けられている複数個の噴出孔夫々が、各有底の外面穴部及び内面穴部と、両者の底面の周縁部に設けられている開口とを有する。この開口は、外面穴部と内面穴部とを連通する。以下では、この開口を連通開口という。
湾曲板状部の内部の流体は、噴出孔を通って湾曲板状部の外部へ噴出する。更に詳細には、湾曲板状部の内部の流体は、内面穴部の開口から内面穴部の内部、連通開口、及び外面穴部の内部をこの順に通って、外面穴部の開口から湾曲板状部の外部へ噴出する。 In the present invention, each of the plurality of ejection holes provided in the curved plate-like portion includes an outer surface hole portion and an inner surface hole portion each having a bottom, and an opening provided in a peripheral edge portion of both bottom surfaces. Have This opening communicates the outer surface hole and the inner surface hole. Hereinafter, this opening is referred to as a communication opening.
The fluid inside the curved plate-like portion is ejected to the outside of the curved plate-like portion through the ejection hole. More specifically, the fluid inside the curved plate-shaped portion passes from the opening of the inner surface hole to the inside of the inner surface hole, the communication opening, and the inner surface of the outer surface hole in this order, and from the opening of the outer surface hole to the curved plate. It spouts outside the shape part.

連通開口は、外面穴部の底面の周縁部と内面穴部の底面の周縁部との重なりの部分である。故に、外面穴部及び内面穴部夫々の内法に比べて、連通開口の内法は小さい。
噴出孔の最小内法は、連通開口の内法である。従って、外面穴部又は内面穴部の内法と同じ内法を有する貫通孔に比べて、噴出孔からは流体が噴出し難い。 The communication opening is an overlapping portion of the peripheral edge portion of the bottom surface of the outer hole portion and the peripheral edge portion of the bottom surface of the inner surface hole portion. Therefore, the inner method of the communication opening is smaller than the inner method of each of the outer surface hole portion and the inner surface hole portion.
The minimum inner method of the ejection hole is the inner method of the communication opening. Therefore, compared with the through-hole which has the same inner method as the inner method of an outer surface hole part or an inner surface hole part, a fluid is hard to eject from an ejection hole.

一面穿設工程及び他面穿設工程夫々は、板状部材に有底穴部を形成する工程である。故に、一面穿設工程及び他面穿設工程は、何れも、従来の浮揚装置を製造するために必要な、開孔部が設けられた突状部を平坦な鋼板に形成する形成工程よりも簡易である。
一面穿設工程及び他面穿設工程においては、内法が大きい外面穴部及び内面穴部を設けることによって、内法が小さい連通開口を有する噴出孔を設けるので、噴出孔と同程度に小さい内法を有する貫通孔を設けるための特殊な工具は不要である。 Each of the one-surface drilling step and the other-surface drilling step is a step of forming a bottomed hole portion in the plate-like member. Therefore, both the one surface drilling step and the other surface drilling step are more necessary than the forming step of forming the protruding portion provided with the opening portion on the flat steel plate, which is necessary for manufacturing the conventional levitation device. It is simple.
In the one-side drilling step and the other-side drilling step, by providing the outer surface hole portion and the inner surface hole portion having a large inner method, a jet hole having a communication opening having a small inner method is provided, so that it is as small as the jet hole. A special tool for providing a through hole having an internal method is not necessary.

本発明にあっては、連通開口が、外面穴部の底面の周縁部から内周面における底面に隣接する部分に亘って設けられていると共に、内面穴部の底面の周縁部から内周面における底面に隣接する部分に亘って設けられている。   In the present invention, the communication opening is provided from the peripheral portion of the bottom surface of the outer surface hole portion to a portion adjacent to the bottom surface of the inner peripheral surface, and from the peripheral portion of the bottom surface of the inner surface hole portion to the inner peripheral surface. Is provided over a portion adjacent to the bottom surface.

仮に、連通開口が外面穴部及び内面穴部夫々の底面の周縁部のみに設けられている場合、外面穴部の底面の板状湾曲部材の外周面からの距離は、内面穴部の底面の板状湾曲部材の外周面からの距離に等しい。この場合、例えば外面穴部又は内面穴部の穿設時に板状部材の厚み方向の位置ずれが起こると、位置ずれが僅かであっても外面穴部及び内面穴部の底面周縁部同士の重なり合いが起こらず、連通開口（延いては噴出孔）が得られない虞がある。
つまり、外面穴部の底面の板状湾曲部材の外周面からの距離を、内面穴部の板状湾曲部材の底面の前記外周面からの距離より長くすることによって、噴出孔を確実に形成することができる。 If the communication opening is provided only in the peripheral edge of the bottom surface of each of the outer surface hole portion and the inner surface hole portion, the distance from the outer peripheral surface of the plate-shaped curved member of the bottom surface of the outer surface hole portion is the bottom surface of the inner surface hole portion. It is equal to the distance from the outer peripheral surface of the plate-like bending member. In this case, for example, when a displacement in the thickness direction of the plate-shaped member occurs when the outer surface hole portion or the inner surface hole portion is formed, even if the position displacement is slight, the outer peripheral hole portion and the bottom peripheral edge portion of the inner surface hole portion overlap each other. Does not occur, and there is a possibility that a communication opening (and hence an ejection hole) cannot be obtained.
That is, by making the distance from the outer peripheral surface of the plate-shaped bending member of the bottom surface of the outer surface hole portion longer than the distance from the outer peripheral surface of the bottom surface of the plate-shaped bending member of the inner surface hole portion, the ejection hole is reliably formed. be able to.

連通開口の、外面穴部（又は内面穴部）の底面における開口面積が等しいという条件下では、連通開口が底面のみに設けられている場合に比べて、底面から内周面に亘る場合の方が、噴出孔の開口量を増大させることができる。   Under the condition that the opening area at the bottom surface of the outer surface hole (or inner surface hole) of the communication opening is equal, the case where the communication opening extends from the bottom surface to the inner peripheral surface compared to the case where the communication opening is provided only on the bottom surface. However, the opening amount of the ejection hole can be increased.

連通開口の、外面穴部（又は内面穴部）の底面における開口面積と、外面穴部（又は内面穴部）の内周面における開口面積との和が等しいという条件下では、連通開口の底面における開口面積と内周面における開口面積との面積比が大きい（又は小さい）ほど、流体は底面に垂直な方向（又は底面に対して傾斜する方向）に噴出し易い。つまり、連通開口が底面から内周面に亘る場合には、噴出孔における流体の噴出方向を容易に調整することができる。   The bottom surface of the communication opening under the condition that the sum of the opening area of the bottom surface of the outer surface hole portion (or inner surface hole portion) and the inner surface of the outer surface hole portion (or inner surface hole portion) of the communication opening is equal. As the area ratio between the opening area at the inner surface and the opening area at the inner peripheral surface is larger (or smaller), the fluid is more likely to be ejected in a direction perpendicular to the bottom surface (or a direction inclined with respect to the bottom surface). That is, when the communication opening extends from the bottom surface to the inner peripheral surface, the ejection direction of the fluid in the ejection hole can be easily adjusted.

本発明にあっては、１個の外面穴部に対して複数個の内面穴部（延いては複数個の連通開口）が設けられる。即ち、噴出孔の開口量を容易に向上させることができる。   In the present invention, a plurality of inner surface hole portions (and a plurality of communication openings) are provided for one outer surface hole portion. That is, the opening amount of the ejection holes can be easily improved.

本発明にあっては、湾曲板状部の湾曲方向両端部夫々に平板状部が連なる。即ち、湾曲板状部及び平板状部の全体はＵ字状に湾曲している。
平板状部には噴出孔が設けられていないので、平板状部にも噴出孔が設けられている場合に比べて、容易に製造することができる。 In the present invention, the flat plate portion is connected to both end portions in the bending direction of the curved plate portion. That is, the entire curved plate-like portion and flat plate-like portion are curved in a U shape.
Since the flat plate portion is not provided with the ejection holes, the flat plate portion can be easily manufactured as compared with the case where the flat plate portion is also provided with the ejection holes.

本発明の浮揚装置及び浮揚装置の製造方法による場合、連通開口は、一般的な工具を用いて、外面穴部及び内面穴部の底面周縁部同士が重なり合うように外面穴部及び内面穴部を板状部材に設けることによって、容易に得ることができる。従って、浮揚装置を低コストで容易に製造することができる。   In the case of the levitation device and the manufacturing method of the levitation device of the present invention, the communication opening is formed by using a general tool to form the outer surface hole portion and the inner surface hole portion so that the outer peripheral surface hole portion and the inner surface hole portion overlap each other. By providing the plate-like member, it can be easily obtained. Therefore, the levitation device can be easily manufactured at low cost.

このようにして製造された浮揚装置は、シート状部材に覆われていない噴出孔からも流体が比較的噴出し難い。故に、シート状部材に覆われていない噴出孔から大量の流体が噴出して湾曲板状部の内部の圧力が大幅に低下することが抑制される。この結果、シート状部材に覆われている噴出孔から噴出する流体の勢いが削がれてシート状部材が湾曲板状部に接触してしまう不都合が抑制される。   In the levitation device thus manufactured, the fluid is relatively difficult to eject from the ejection holes not covered with the sheet-like member. Therefore, it is suppressed that a large amount of fluid ejects from the ejection hole which is not covered with the sheet-like member, and the pressure inside the curved plate-like portion is significantly reduced. As a result, the inconvenience that the momentum of the fluid ejected from the ejection holes covered by the sheet-like member is scraped and the sheet-like member contacts the curved plate-like portion is suppressed.

本発明の実施の形態１に係る浮揚装置の構成を略示する正面図である。It is a front view which briefly shows the structure of the levitating apparatus which concerns on Embodiment 1 of this invention. 浮揚装置の構成を略示する平面図である。It is a top view which shows the structure of a levitation apparatus schematically. 浮揚装置の構成を略示する断面図である。It is sectional drawing which shows the structure of a levitation apparatus schematically. 浮揚装置が備えるＵ字湾曲板部の構成を略示する展開図である。It is an expanded view which briefly shows the structure of the U-shaped curved board part with which a levitation apparatus is provided. Ｕ字湾曲板部の湾曲板状部に設けられている噴出孔の構成を略示する平面図である。It is a top view which shows schematically the structure of the ejection hole provided in the curved plate-shaped part of a U-shaped curved board part. 噴出孔の構成を略示する断面図である。It is sectional drawing which shows the structure of an ejection hole schematically. 浮揚装置の製造方法を説明するための断面図である。It is sectional drawing for demonstrating the manufacturing method of a levitation apparatus. 本発明の実施の形態２に係る浮揚装置が備えるＵ字湾曲板部の構成を略示する展開図である。It is an expanded view which briefly shows the structure of the U-shaped curved board part with which the levitation apparatus which concerns on Embodiment 2 of this invention is provided. Ｕ字湾曲板部の湾曲板状部に設けられている噴出孔の構成を略示する平面図である。It is a top view which shows schematically the structure of the ejection hole provided in the curved plate-shaped part of a U-shaped curved board part. 噴出孔の構成を略示する断面図である。It is sectional drawing which shows the structure of an ejection hole schematically. 本発明の実施の形態３に係る浮揚装置が備えるＵ字湾曲板部の湾曲板状部に設けられている噴出孔の構成を略示する平面図である。It is a top view which shows schematically the structure of the ejection hole provided in the curved plate-shaped part of the U-shaped curved board part with which the levitation apparatus which concerns on Embodiment 3 of this invention is provided. 噴出孔の構成を略示する断面図である。It is sectional drawing which shows the structure of an ejection hole schematically. 本発明の実施の形態４に係る浮揚装置が備えるＵ字湾曲板部の湾曲板状部に設けられている噴出孔の構成を略示する平面図である。It is a top view which shows schematically the structure of the ejection hole provided in the curved plate-shaped part of the U-shaped curved board part with which the levitation apparatus which concerns on Embodiment 4 of this invention is provided. 噴出孔の構成を略示する断面図である。It is sectional drawing which shows the structure of an ejection hole schematically.

以下、本発明を、その実施の形態を示す図面に基づいて詳述する。以下の説明では、図において矢符で示す上下、前後、及び左右を使用する。   Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. In the following description, up and down, front and rear, and left and right indicated by arrows in the figure are used.

実施の形態 １．
図１、図２、及び図３は、本発明の実施の形態１に係る浮揚装置１の構成を略示する正面図、平面図、及び断面図である。 Embodiment 1.
1, 2, and 3 are a front view, a plan view, and a cross-sectional view schematically showing a configuration of a levitation device 1 according to Embodiment 1 of the present invention.

浮揚装置１は、Ｕ字湾曲板部１１、底板１２、並びに各２個の流入部材１３，１３及びフランジ１４，１４を備える。
Ｕ字湾曲板部１１の板厚は、例えば５mmである。Ｕ字湾曲板部１１は、湾曲板状部１１１及び２個の平板状部１１２，１１２を有する。Ｕ字湾曲板部１１は側面視が下向きのＵ字状をなす。湾曲板状部１１１はＵ字の湾曲部分に相当し、平板状部１１２，１１２はＵ字の湾曲部分に連なる２側部に相当する。Ｕ字湾曲板部１１の内面側の空間は、左右両側及び下側が開放されている。 The levitation device 1 includes a U-shaped curved plate portion 11, a bottom plate 12, two inflow members 13 and 13, and flanges 14 and 14.
The thickness of the U-shaped curved plate portion 11 is, for example, 5 mm. The U-shaped curved plate portion 11 has a curved plate-shaped portion 111 and two flat plate-shaped portions 112 and 112. The U-shaped curved plate portion 11 has a U-shape in which the side view is downward. The curved plate portion 111 corresponds to a U-shaped curved portion, and the flat plate portions 112 and 112 correspond to two side portions that are continuous with the U-shaped curved portion. The space on the inner surface side of the U-shaped curved plate portion 11 is open on both the left and right sides and the lower side.

湾曲板状部１１１は弧状に湾曲した板状をなし、本実施の形態では半円筒状をなす。湾曲板状部１１１の軸方向は左右方向である。湾曲板状部１１１の湾曲方向両端部は前端部及び後端部である。湾曲板状部１１１には複数個の噴出孔２１，２１，…が設けられている。
平板状部１１２，１１２の内、一方は湾曲板状部１１１の前端部に連なり、他方は後端部に連なる。各平板状部１１２は上下左右方向に延びる平板状をなし、湾曲板状部１１１に一体に設けられている。平板状部１１２には噴出孔２１，２１，…は設けられていない。 The curved plate portion 111 has a plate shape curved in an arc shape, and in the present embodiment, has a semicylindrical shape. The axial direction of the curved plate portion 111 is the left-right direction. Both ends in the bending direction of the curved plate-like portion 111 are a front end portion and a rear end portion. The curved plate-like portion 111 is provided with a plurality of ejection holes 21, 21,.
One of the flat plate-like portions 112, 112 is connected to the front end portion of the curved plate-like portion 111, and the other is connected to the rear end portion. Each flat plate portion 112 has a flat plate shape extending in the vertical and horizontal directions, and is provided integrally with the curved plate portion 111. .. Are not provided in the flat plate-like portion 112.

底板１２は前後左右方向に延びる矩形平板状をなす。底板１２の左右方向の長さはＵ字湾曲板部１１の左右方向の長さよりも長く、底板１２の前後方向の長さはＵ字湾曲板部１１の前後両下端部間の離隔距離と同程度である。底板１２は平板状部１１２，１１２夫々の下端部同士を連結するように配されている。この結果、底板１２はＵ字湾曲板部１１の下側の開放部分を閉鎖している。   The bottom plate 12 has a rectangular flat plate shape extending in the front-rear and left-right directions. The length of the bottom plate 12 in the left-right direction is longer than the length of the U-shaped curved plate portion 11 in the left-right direction, and the length of the bottom plate 12 in the front-rear direction is the same as the separation distance between the front and rear lower ends of the U-shaped curved plate portion 11. Degree. The bottom plate 12 is disposed so as to connect the lower ends of the flat plate-like portions 112 and 112. As a result, the bottom plate 12 closes the lower open portion of the U-shaped curved plate portion 11.

流入部材１３，１３及びフランジ１４，１４はＵ字湾曲板部１１の左右両側に１個ずつ配されている。以下では、左側の流入部材１３及びフランジ１４について説明するが、右側の流入部材１３及びフランジ１４も同様である。
流入部材１３は円筒状をなす。流入部材１３の軸方向は左右方向である。流入部材１３の右側開口は、Ｕ字湾曲板部１１の内部に臨む。
フランジ１４は流入部材１３の右端部の周縁部に突設された鍔状部である。フランジ１４はＵ字湾曲板部１１の左端部と底板１２の上面とを連結するように配されている。この結果、流入部材１３及びフランジ１４はＵ字湾曲板部１１の左側の開放部分を閉鎖している。 One inflow member 13, 13 and one flange 14, 14 are arranged on each of the left and right sides of the U-shaped curved plate portion 11. Hereinafter, the left inflow member 13 and the flange 14 will be described, but the right inflow member 13 and the flange 14 are the same.
The inflow member 13 has a cylindrical shape. The axial direction of the inflow member 13 is the left-right direction. The right opening of the inflow member 13 faces the inside of the U-shaped curved plate portion 11.
The flange 14 is a hook-like portion protruding from the peripheral edge of the right end portion of the inflow member 13. The flange 14 is disposed so as to connect the left end portion of the U-shaped curved plate portion 11 and the upper surface of the bottom plate 12. As a result, the inflow member 13 and the flange 14 close the open portion on the left side of the U-shaped curved plate portion 11.

以下では、Ｕ字湾曲板部１１の内面側の空間（更に詳細には、Ｕ字湾曲板部１１、底板１２、流入部材１３，１３、及びフランジ１４，１４に囲繞された空間）を、浮揚装置１の内部という。また、Ｕ字湾曲板部１１の外面側の空間を、浮揚装置１の外部という。
流入部材１３には、図示しないポンプによって送り込まれた流体（液体又は気体等）が左側開口から流入する。流入部材１３に流入した流体は、流入部材１３の右側開口から浮揚装置１の内部に流入する。浮揚装置１の内部に流入した流体は、浮揚装置１の内部に貯留され、噴出孔２１，２１，…から浮揚装置１の外部に噴出する。 Hereinafter, the space on the inner surface side of the U-shaped curved plate portion 11 (more specifically, the space surrounded by the U-shaped curved plate portion 11, the bottom plate 12, the inflow members 13, 13 and the flanges 14, 14) is levitated. It is called the inside of the device 1. The space on the outer surface side of the U-shaped curved plate portion 11 is referred to as the outside of the levitation device 1.
A fluid (liquid or gas) fed by a pump (not shown) flows into the inflow member 13 from the left side opening. The fluid that has flowed into the inflow member 13 flows into the inside of the levitation device 1 from the right opening of the inflow member 13. The fluid that has flowed into the levitation device 1 is stored inside the levitation device 1 and is ejected from the ejection holes 21, 21,.

シート状部材Ａは帯状をなす。シート状部材Ａの幅方向は左右方向である。シート状部材Ａは、Ｕ字湾曲板部１１の後下端部から前下端部に亘ってＵ字湾曲板部１１の外面を覆うようにＵ字湾曲板部１１に掛け回されている。
シート状部材Ａは、まず、下側から上側に向けて搬送され、次に、浮揚装置１にて上向きに突出する円弧状に方向転換し、次いで、上側から下側に搬送される。シート状部材ＡのＵ字湾曲板部１１に掛け回されている部分は、噴出孔２１，２１，…から噴出する流体によって、Ｕ字湾曲板部１１の外面から浮遊する。 The sheet-like member A has a strip shape. The width direction of the sheet-like member A is the left-right direction. The sheet-like member A is wound around the U-shaped curved plate portion 11 so as to cover the outer surface of the U-shaped curved plate portion 11 from the rear lower end portion to the front lower end portion of the U-shaped curved plate portion 11.
The sheet-like member A is first conveyed from the lower side to the upper side, then changed in the arc shape protruding upward by the levitation device 1, and then conveyed from the upper side to the lower side. The portion of the sheet-like member A that is wound around the U-shaped curved plate portion 11 floats from the outer surface of the U-shaped curved plate portion 11 by the fluid ejected from the ejection holes 21, 21,.

なお、噴出孔２１，２１，…は湾曲板状部１１１のみならず平板状部１１２，１１２にも設けられていてもよい。しかしながら、湾曲板状部１１１に噴出孔２１，２１，…を設けてあればシート状部材ＡがＵ字湾曲板部１１の外面に接触する虞がない場合、敢えて平板状部１１２，１１２に噴出孔２１，２１，…を設ける必要はない。
仮に、不必要な噴出孔２１，２１，…を平板状部１１２，１１２に設けた場合、噴出孔２１，２１，…の個数が多い分、浮揚装置１の製造コストが増大する。また、浮揚装置１の内部における流体の圧力が無用に低下し、却ってシート状部材ＡがＵ字湾曲板部１１の外面に接触する虞がある。 The ejection holes 21, 21,... May be provided not only in the curved plate portion 111 but also in the flat plate portions 112, 112. However, if the curved plate-like portion 111 is provided with the ejection holes 21, 21,..., There is no possibility that the sheet-like member A contacts the outer surface of the U-shaped curved plate portion 11. It is not necessary to provide the holes 21, 21,.
If unnecessary ejection holes 21, 21,... Are provided in the plate-like portions 112, 112, the manufacturing cost of the levitation device 1 increases as the number of the ejection holes 21, 21,. Further, the pressure of the fluid inside the levitation device 1 is unnecessarily lowered, and there is a possibility that the sheet-like member A contacts the outer surface of the U-shaped curved plate portion 11 on the contrary.

次に、各噴出孔２１の構成を説明する。
図４は、Ｕ字湾曲板部１１の構成を略示する展開図である。図４に向かって左右方向に延びる一点鎖線はＵ字湾曲板部１１全体の展開図における前後方向の中心位置を示す第１中心線であり、図４に向かって上下方向に延びる一点鎖線はＵ字湾曲板部１１全体の展開図における左右方向の中心位置を示す第２中心線である。つまり、図４には、Ｕ字湾曲板部１１全体の展開図の右前部が示されている。
噴出孔２１，２１，…の構成は、第１中心線を中心に前後対称である。また、第２中心線上に配されている噴出孔２１，２１，…以外の噴出孔２１，２１，…の構成は、第２中心線を中心に左右対称である。 Next, the configuration of each ejection hole 21 will be described.
FIG. 4 is a development view schematically showing the configuration of the U-shaped curved plate portion 11. 4 is a first center line indicating the center position in the front-rear direction in the developed view of the entire U-shaped curved plate portion 11, and the one-dot chain line extending in the vertical direction toward FIG. It is a 2nd centerline which shows the center position of the left-right direction in the expansion | deployment figure of the character-shaped curved board part 11. FIG. That is, FIG. 4 shows the right front portion of the developed view of the entire U-shaped curved plate portion 11.
The structure of the ejection holes 21, 21,... Is symmetrical with respect to the first center line. Further, the configuration of the ejection holes 21, 21, ... other than the ejection holes 21, 21, ... arranged on the second center line is symmetrical with respect to the second center line.

以下では、Ｕ字湾曲板部１１の右前部に配されている噴出孔２１，２１，…について説明する。
図５及び図６は、噴出孔２１の構成を略示する平面図及び断面図である。図５に向かって手前側（及び奥側）は湾曲板状部１１１の外周面側（及び内周面側）である。図６に向かって上側（及び下側）は湾曲板状部１１１の外周面側（及び内周面側）である。 Hereinafter, the ejection holes 21, 21,... Arranged in the right front portion of the U-shaped curved plate portion 11 will be described.
5 and 6 are a plan view and a cross-sectional view schematically showing the configuration of the ejection hole 21. FIG. The front side (and back side) toward FIG. 5 is the outer peripheral surface side (and inner peripheral surface side) of the curved plate-like portion 111. The upper side (and lower side) toward FIG. 6 is the outer peripheral surface side (and inner peripheral surface side) of the curved plate-like portion 111.

噴出孔２１は、外面穴部３１、内面穴部４１、及び連通開口５１（開口）を有する。
外面穴部３１は湾曲板状部１１１の外周面に設けられている。外面穴部３１は円形の有底穴部である。即ち、外面穴部３１の底面は、湾曲板状部１１１の内周面よりも外周面側にある。
外面穴部３１の直径は、湾曲板状部１１１の板厚以上である（例えば５mm）。外面穴部３１の深さ（即ち、外面穴部３１の底面に係る湾曲板状部１１１の外周面からの距離）は、例えば3.5mm である。
外面穴部３１，３１，…は、互いに適長離隔して、湾曲板状部１１１の外周面に千鳥配置されている。 The ejection hole 21 has an outer surface hole 31, an inner surface hole 41, and a communication opening 51 (opening).
The outer hole portion 31 is provided on the outer peripheral surface of the curved plate-like portion 111. The outer surface hole 31 is a circular bottomed hole. That is, the bottom surface of the outer surface hole portion 31 is closer to the outer peripheral surface side than the inner peripheral surface of the curved plate portion 111.
The diameter of the outer hole portion 31 is equal to or greater than the plate thickness of the curved plate portion 111 (for example, 5 mm). The depth of the outer surface hole portion 31 (that is, the distance from the outer peripheral surface of the curved plate-shaped portion 111 related to the bottom surface of the outer surface hole portion 31) is, for example, 3.5 mm.
The outer surface hole portions 31, 31,... Are staggered on the outer peripheral surface of the curved plate-shaped portion 111 so as to be separated from each other by an appropriate length.

内面穴部４１は湾曲板状部１１１の内周面に設けられている。内面穴部４１は円形の有底穴部である。即ち、内面穴部４１の底面は、湾曲板状部１１１の外周面よりも内周面側にある。
内面穴部４１の底面に係る湾曲板状部１１１の外周面からの距離は、外面穴部３１の深さよりも短い。
内面穴部４１の直径は、外面穴部３１の直径に等しい。本実施の形態では、内面穴部４１の深さ（即ち、内面穴部４１の底面に係る湾曲板状部１１１の内周面からの距離）は、外面穴部３１の深さよりも浅い（例えば２mmである）が、これに限定されるものではない。内面穴部４１の底面に係る湾曲板状部１１１の外周面からの距離が外面穴部３１の深さよりも短い、という条件が満たされているのであれば、内面穴部４１の深さは、外面穴部３１より深くても浅くてもよく、外面穴部３１と同じでもよい。 The inner surface hole portion 41 is provided on the inner peripheral surface of the curved plate portion 111. The inner surface hole 41 is a circular bottomed hole. That is, the bottom surface of the inner surface hole portion 41 is on the inner peripheral surface side with respect to the outer peripheral surface of the curved plate-shaped portion 111.
The distance from the outer peripheral surface of the curved plate-like portion 111 related to the bottom surface of the inner surface hole portion 41 is shorter than the depth of the outer surface hole portion 31.
The diameter of the inner surface hole 41 is equal to the diameter of the outer surface hole 31. In the present embodiment, the depth of the inner surface hole portion 41 (that is, the distance from the inner peripheral surface of the curved plate-shaped portion 111 related to the bottom surface of the inner surface hole portion 41) is shallower than the depth of the outer surface hole portion 31 (for example, 2 mm), but is not limited to this. If the condition that the distance from the outer peripheral surface of the curved plate-like portion 111 related to the bottom surface of the inner surface hole portion 41 is shorter than the depth of the outer surface hole portion 31 is satisfied, the depth of the inner surface hole portion 41 is It may be deeper or shallower than the outer surface hole 31, and may be the same as the outer surface hole 31.

内面穴部４１は、外面穴部３１とは非同心である。内面穴部４１の中心軸は、外面穴部３１の中心軸よりも図５及び図６に向かって左側に位置している。
湾曲板状部１１１の前端部に設けられている各噴出孔２１においては、内面穴部４１の中心軸は、外面穴部３１の中心軸よりも前側に位置している。
湾曲板状部１１１の前後方向中央部且つ左半分に設けられている各噴出孔２１においては、内面穴部４１の中心軸は、外面穴部３１の中心軸よりも左側に位置している。 The inner surface hole 41 is not concentric with the outer surface hole 31. The central axis of the inner surface hole portion 41 is located on the left side in FIGS. 5 and 6 with respect to the central axis of the outer surface hole portion 31.
In each ejection hole 21 provided at the front end portion of the curved plate-like portion 111, the central axis of the inner surface hole portion 41 is located in front of the central axis of the outer surface hole portion 31.
In each ejection hole 21 provided at the center in the front-rear direction and the left half of the curved plate-like part 111, the central axis of the inner surface hole 41 is located on the left side of the central axis of the outer surface hole 31.

内面穴部４１の中心軸の、外面穴部３１の中心軸からの離隔距離は、内面穴部４１の直径未満である（即ち外面穴部３１及び内面穴部４１夫々の半径の和より短い）。
以上の結果、外面穴部３１及び内面穴部４１夫々の内部空間は、部分的に一致している。連通開口５１は、外面穴部３１及び内面穴部４１夫々の内部空間における一致部分（図６中二点鎖線にて図示）に位置している。 The separation distance of the central axis of the inner surface hole 41 from the central axis of the outer surface hole 31 is less than the diameter of the inner surface hole 41 (that is, shorter than the sum of the radii of the outer surface hole 31 and the inner surface hole 41). .
As a result, the internal space of each of the outer surface hole 31 and the inner surface hole 41 partially matches. The communication opening 51 is located at a matching portion (illustrated by a two-dot chain line in FIG. 6) in the internal space of each of the outer surface hole portion 31 and the inner surface hole portion 41.

連通開口５１は、外面穴部３１及び内面穴部４１夫々の底面の周縁部から、夫々の内周面における底面に隣接する部分に亘って設けられている。   The communication opening 51 is provided from the peripheral portion of the bottom surface of each of the outer surface hole portion 31 and the inner surface hole portion 41 to a portion adjacent to the bottom surface of each inner peripheral surface.

外面穴部３１の底面の周縁部における連通開口５１の配置位置は、図５及び図６に向かって左端部であり、外面穴部３１の内周面における連通開口５１の配置位置は、図６に向かって左下端部である。この左下端部は、上述の左端部に隣接している。
内面穴部４１の底面の周縁部における連通開口５１の配置位置は、図５及び図６に向かって右端部であり、内面穴部４１の内周面における連通開口５１の配置位置は、図５及び図６に向かって右上端部である。この右上端部は、上述の右端部に隣接している。 The arrangement position of the communication opening 51 at the peripheral edge portion of the bottom surface of the outer hole portion 31 is the left end portion in FIGS. 5 and 6, and the arrangement position of the communication opening 51 on the inner peripheral surface of the outer hole portion 31 is as shown in FIG. It is a lower left end part toward. This lower left end is adjacent to the above left end.
The arrangement position of the communication opening 51 at the peripheral edge portion of the bottom surface of the inner surface hole 41 is the right end portion in FIGS. 5 and 6, and the arrangement position of the communication opening 51 on the inner peripheral surface of the inner surface hole 41 is FIG. And it is an upper right end part toward FIG. This upper right end is adjacent to the above right end.

浮揚装置１の内部の流体は、噴出孔２１における湾曲板状部１１１の内周面側の開口から噴出孔２１の内部を通って、噴出孔２１における湾曲板状部１１１から浮揚装置１の外部に噴出する。更に詳細には、浮揚装置１の内部の流体は、内面穴部４１の開口から内面穴部４１の内部、連通開口５１、及び外面穴部３１の内部をこの順に通って、外面穴部３１の開口から浮揚装置１の外部に噴出する。
外面穴部３１及び内面穴部４１夫々の開口面積は大きいが、連通開口５１の開口面積は、外面穴部３１（又は内面穴部４１）の開口面積より小さい。故に、外面穴部３１の直径以上の直径を有する貫通孔に比べて、噴出孔２１からは流体が噴出し難い。換言すれば、噴出孔２１から噴出する流体の量が抑制される。 The fluid inside the levitation device 1 passes through the inside of the ejection hole 21 from the opening on the inner peripheral surface side of the curved plate-like portion 111 in the ejection hole 21, and from the curved plate-like portion 111 in the ejection hole 21 to the outside of the levitation device 1. To erupt. More specifically, the fluid inside the levitation device 1 passes from the opening of the inner surface hole 41 to the inner surface hole 41, the communication opening 51, and the outer surface hole 31 in this order. It spouts out of the levitation device 1 from the opening.
Although the opening area of each of the outer surface hole 31 and the inner surface hole 41 is large, the opening area of the communication opening 51 is smaller than the opening area of the outer surface hole 31 (or the inner surface hole 41). Therefore, compared with the through-hole which has a diameter more than the diameter of the outer surface hole part 31, a fluid is hard to eject from the ejection hole 21. FIG. In other words, the amount of fluid ejected from the ejection hole 21 is suppressed.

ところで、連通開口５１を通過する流体の通過方向は、内面穴部４１の開口中心側から外面穴部３１の開口中心側に向かう方向である。つまり、噴出孔２１から噴出する流体の噴出方向は、外面穴部３１の底面に対して傾斜している。
従って、湾曲板状部１１１の前端部に設けられている各噴出孔２１においては、流体は前側から後側に向けて（即ち湾曲板状部１１１の前後方向中央部に向けて）流体が噴出する。一方、湾曲板状部１１１の前後方向中央部且つ左半分に設けられている各噴出孔２１においては、流体は左側から右側に向けて（即ち湾曲板状部１１１の左右方向中央部に向けて）流体が噴出する。故に、シート状部材Ａは、湾曲板状部１１１の前後左右方向中央部に向けて押し上げられる。
以上の結果、シート状部材ＡがＵ字湾曲板部１１の外面に接触することが更に抑制される。 By the way, the passage direction of the fluid passing through the communication opening 51 is a direction from the opening center side of the inner surface hole portion 41 toward the opening center side of the outer surface hole portion 31. That is, the ejection direction of the fluid ejected from the ejection hole 21 is inclined with respect to the bottom surface of the outer surface hole portion 31.
Accordingly, in each of the ejection holes 21 provided at the front end portion of the curved plate portion 111, the fluid is ejected from the front side toward the rear side (that is, toward the central portion in the front-rear direction of the curved plate portion 111). To do. On the other hand, in each of the ejection holes 21 provided in the central part in the front-rear direction and the left half of the curved plate-like part 111, the fluid flows from the left side to the right side (that is, toward the central part in the left-right direction of the curved plate-like part 111). ) Fluid squirts. Therefore, the sheet-like member A is pushed up toward the central portion of the curved plate-like portion 111 in the front-rear and left-right directions.
As a result, the sheet-like member A is further suppressed from coming into contact with the outer surface of the U-shaped curved plate portion 11.

図７は、浮揚装置１の製造方法を説明するための断面図である。
製造者は、まず、Ｕ字湾曲板部１１となすべき平板状部材１１０（板状部材）を準備する。平板状部材１１０は、可塑性と、流体によって腐食され難い材質とを有しているのであれば、金属製でも合成樹脂製でもよい。
次に、製造者は一面穿設工程を実行する。一面穿設工程における製造者は、平板状部材１１０の一面に、外面穴部３１，３１，…を千鳥配置して夫々設ける。
次いで、製造者は他面穿設工程を実行する。他面穿設工程における製造者は、平板状部材１１０の他面に、内面穴部４１，４１，…を夫々設ける。 FIG. 7 is a cross-sectional view for explaining a method of manufacturing the levitation device 1.
The manufacturer first prepares a flat plate member 110 (plate member) to be the U-shaped curved plate portion 11. The flat plate member 110 may be made of metal or synthetic resin as long as it has plasticity and a material that is hardly corroded by a fluid.
Next, the manufacturer performs a one-side drilling process. The manufacturer in the one-side drilling step provides the outer surface holes 31, 31,... On the one surface of the flat plate member 110 in a staggered manner.
Next, the manufacturer performs the other surface drilling process. The manufacturer in the other surface drilling step provides inner surface holes 41, 41,... On the other surface of the flat plate member 110, respectively.

内面穴部４１，４１，…の形成位置及び深さは、外面穴部３１，３１，…の形成位置及び深さに応じて設定される。
即ち、各内面穴部４１の中心軸が、外面穴部３１の配置位置に応じて、外面穴部３１の中心軸から前側又は左側に内面穴部４１の直径未満だけ離隔するよう、内面穴部４１の形成位置が設定される。また、内面穴部４１の底面に係る平板状部材１１０の一面からの距離が、外面穴部３１の深さよりも短くなるよう、内面穴部４１の深さが設定される。 The formation position and depth of the inner surface hole portions 41, 41,... Are set according to the formation position and depth of the outer surface hole portions 31, 31,.
That is, the inner surface hole portions are arranged such that the center axis of each inner surface hole portion 41 is separated from the center axis of the outer surface hole portion 31 to the front side or the left side by less than the diameter of the inner surface hole portion 41 according to the arrangement position of the outer surface hole portion 31. The formation position of 41 is set. Further, the depth of the inner surface hole portion 41 is set so that the distance from one surface of the flat plate member 110 related to the bottom surface of the inner surface hole portion 41 is shorter than the depth of the outer surface hole portion 31.

一面穿設工程及び他面穿設工程の終了後、製造者は湾曲工程を実行する。湾曲工程における製造者は、平板状部材１１０の一面を外側に向けて平板状部材１１０の前後方向中央部を円弧状に湾曲させる。この結果、湾曲板状部１１１が形成される。このとき、平板状部材１１０の前後方向両端部が、平板状部１１２，１１２となる。   After the completion of the one-surface drilling process and the other-surface drilling process, the manufacturer executes a bending process. The manufacturer in the bending process curves the central portion of the flat plate member 110 in an arc shape with one surface of the flat plate member 110 facing outward. As a result, the curved plate portion 111 is formed. At this time, both ends in the front-rear direction of the flat plate member 110 become flat plate portions 112 and 112.

連通開口５１，５１，…（又は噴出孔２１，２１，…）を直接的に形成する工程は存在しない。何故ならば、他面穿設工程にて各内面穴部４１が形成されることによって、連通開口５１が外面穴部３１及び内面穴部４１に自然に形成されるから（即ち、外面穴部３１、内面穴部４１、及び連通開口５１を有する噴出孔２１が自然に形成されるから）である。
なお、一面穿設工程と他面穿設工程とはこの順に実行される形態に限定されない。つまり、一面穿設工程の実行前に他面穿設工程が実行されてもよい。 There is no step of directly forming the communication openings 51, 51,... (Or the ejection holes 21, 21,...). This is because the communication openings 51 are naturally formed in the outer surface hole 31 and the inner surface hole 41 by forming each inner surface hole 41 in the other surface drilling step (that is, the outer surface hole 31). This is because the ejection hole 21 having the inner surface hole 41 and the communication opening 51 is naturally formed).
Note that the one-side drilling step and the other-side drilling step are not limited to the forms executed in this order. That is, the other surface drilling process may be performed before the one surface drilling process is performed.

外面穴部３１及び内面穴部４１夫々は、平板状部材１１０に形成し易い直径を有している。故に、外面穴部３１及び内面穴部４１夫々は、一般的な工具を用いて容易に形成することができる。
また、一面穿設工程も他面穿設工程も、従来の浮揚装置を製造するために必要な、開孔部が設けられた突状部を平坦な鋼板に形成する形成工程よりも簡易である。
以上の結果、浮揚装置１は低コストで容易に製造することができる。 Each of the outer hole portion 31 and the inner hole portion 41 has a diameter that can be easily formed in the flat plate member 110. Therefore, each of the outer surface hole 31 and the inner surface hole 41 can be easily formed using a general tool.
Moreover, both the one-side drilling process and the other-surface drilling process are simpler than the forming process required for manufacturing a conventional levitation device, in which a protruding portion provided with an opening is formed on a flat steel plate. .
As a result, the levitation device 1 can be easily manufactured at low cost.

外面穴部３１の深さ及び／又は内面穴部４１の深さが深いほど、連通開口５１の開口面積は大きくなる。つまり、設計段階で外面穴部３１及び内面穴部４１夫々の深さを調整することによって、噴出孔２１の開口量を容易に調整することができる。   As the depth of the outer surface hole 31 and / or the depth of the inner surface hole 41 increases, the opening area of the communication opening 51 increases. That is, the opening amount of the ejection hole 21 can be easily adjusted by adjusting the depths of the outer surface hole portion 31 and the inner surface hole portion 41 at the design stage.

各噴出孔２１からは流体が噴出し易い。故に、各噴出孔２１に替えて外面穴部３１の直径以上の直径を有する貫通孔が設けられている場合に比べて、噴出孔２１，２１，…の一部がシート状部材Ａに覆われていないときでも、シート状部材Ａに覆われていない一部の噴出孔２１，２１，…から大量の流体が噴出して浮揚装置１の内部の圧力が大幅に低下してしまう不都合が抑制される。
従って、浮揚装置１の内部の圧力が大幅に低下することによって、シート状部材Ａに覆われている噴出孔２１，２１，…から噴出する流体の勢いが削がれて、シート状部材ＡがＵ字湾曲板部１１に接触してしまう不都合が抑制される。
外面穴部３１及び内面穴部４１は円形に限定されない。また、外面穴部３１及び内面穴部４１は互いに直径が異なっていてもよい。 A fluid is easily ejected from each ejection hole 21. Therefore, part of the ejection holes 21, 21,... Is covered with the sheet-like member A as compared with the case where through holes having a diameter equal to or larger than the diameter of the outer surface hole 31 are provided instead of the ejection holes 21. Even when not, the inconvenience that a large amount of fluid is ejected from some of the ejection holes 21, 21,... That are not covered by the sheet-like member A and the pressure inside the levitation device 1 is significantly reduced is suppressed. The
Therefore, when the pressure inside the levitation device 1 is significantly reduced, the momentum of the fluid ejected from the ejection holes 21, 21,. The inconvenience of contacting the U-shaped curved plate portion 11 is suppressed.
The outer surface hole 31 and the inner surface hole 41 are not limited to a circular shape. Further, the outer hole portion 31 and the inner hole portion 41 may have different diameters.

外面穴部３１，３１，…の配置は千鳥配置に限定されず、格子状又は螺旋状等の配置でもよい。
なお、内面穴部４１の底面に係る湾曲板状部１１１の外周面からの距離は、外面穴部３１の深さに等しくてもよい。この場合、連通開口５１は外面穴部３１及び内面穴部４１夫々の底面にのみ形成されるので、内面穴部４１の底面に係る湾曲板状部１１１の外周面からの距離が外面穴部３１の深さより短い場合に比べて連通開口５１の開口面積が小さくなる。従って、噴出孔２１からの流体の噴出量が更に抑制される。ただし、外面穴部３１及び内面穴部４１夫々の形成時に少なくとも一方の深さが僅かでも浅くなると、連通開口５１が形成されない（従って噴出孔２１が得られない）虞がある。 The arrangement of the outer surface hole portions 31, 31,... Is not limited to the staggered arrangement, and may be an arrangement such as a lattice shape or a spiral shape.
In addition, the distance from the outer peripheral surface of the curved plate-like portion 111 related to the bottom surface of the inner surface hole portion 41 may be equal to the depth of the outer surface hole portion 31. In this case, since the communication opening 51 is formed only on the bottom surfaces of the outer surface hole portion 31 and the inner surface hole portion 41, the distance from the outer peripheral surface of the curved plate portion 111 related to the bottom surface of the inner surface hole portion 41 is the outer surface hole portion 31. The opening area of the communication opening 51 is smaller than that in the case where it is shorter than the depth. Accordingly, the amount of fluid ejected from the ejection hole 21 is further suppressed. However, if the depth of at least one of the outer surface hole 31 and the inner surface hole 41 is slightly reduced, the communication opening 51 may not be formed (therefore, the ejection hole 21 cannot be obtained).

実施の形態 ２．
図８は、本発明の実施の形態２に係る浮揚装置１が備えるＵ字湾曲板部１１の構成を略示する展開図である。図９及び図１０は、Ｕ字湾曲板部１１の湾曲板状部１１１に設けられている噴出孔２２の構成を略示する平面図及び断面図である。図８〜図１０は、実施の形態１の図４〜図６に対応する。
本実施の形態の浮揚装置１は、実施の形態１の浮揚装置１と略同様の構成である。以下では、実施の形態１との差異について説明し、その他、実施の形態１に対応する部分には同一符号を付してそれらの説明を省略する。 Embodiment 2. FIG.
FIG. 8 is a development view schematically showing the configuration of the U-shaped curved plate portion 11 provided in the levitation apparatus 1 according to Embodiment 2 of the present invention. FIGS. 9 and 10 are a plan view and a cross-sectional view schematically showing the configuration of the ejection hole 22 provided in the curved plate-like portion 111 of the U-shaped curved plate portion 11. 8 to 10 correspond to FIGS. 4 to 6 of the first embodiment.
The levitation device 1 according to the present embodiment has substantially the same configuration as the levitation device 1 according to the first embodiment. Hereinafter, differences from the first embodiment will be described, and other parts corresponding to those of the first embodiment are denoted by the same reference numerals and description thereof will be omitted.

本実施の形態の湾曲板状部１１１には、実施の形態１の噴出孔２１，２１，…に替えて、複数個の噴出孔２２，２２，…が設けられている。噴出孔２２は、外面穴部３１、内面穴部４１、及び連通開口５１と、内面穴部４２及び連通開口５２（開口）とを有する。
内面穴部４２の構成は、内面穴部４１の構成と略同様である。両者の差異は、内面穴部４２が、外面穴部３１の中心軸を中心に内面穴部４１から180 °離隔した位置に設けられていることである。
従って、内面穴部４２の中心軸は、外面穴部３１の中心軸よりも図９及び図１０に向かって右側に位置している。 The curved plate-like portion 111 of the present embodiment is provided with a plurality of ejection holes 22, 22,... Instead of the ejection holes 21, 21,. The ejection hole 22 has an outer surface hole portion 31, an inner surface hole portion 41, and a communication opening 51, and an inner surface hole portion 42 and a communication opening 52 (opening).
The configuration of the inner surface hole 42 is substantially the same as the configuration of the inner surface hole 41. The difference between the two is that the inner surface hole portion 42 is provided at a position 180 degrees away from the inner surface hole portion 41 around the central axis of the outer surface hole portion 31.
Therefore, the central axis of the inner surface hole portion 42 is located on the right side of the central axis of the outer surface hole portion 31 in FIGS. 9 and 10.

外面穴部３１及び内面穴部４１，４２は、外面穴部３１の中心軸を中心に左右対称である。換言すれば、外面穴部３１に対して同形状同寸法の２個の内面穴部４１，４２が外面穴部３１の底面の周縁方向に等配されている。
実施の形態１においては、前後方向に並設されている外面穴部３１及び内面穴部４１と左右方向に並設されている外面穴部３１及び内面穴部４１とが混在しているが、本実施の形態においては、外面穴部３１と内面穴部４１，４２とは左右方向に並設されている。なお、外面穴部３１と内面穴部４１，４２とは前後方向に並設されていてもよく、前後方向に並設されているものと左右方向に並設されているものとが混在していてもよい。 The outer surface hole portion 31 and the inner surface hole portions 41 and 42 are symmetric with respect to the central axis of the outer surface hole portion 31. In other words, two inner surface hole portions 41, 42 having the same shape and the same size as the outer surface hole portion 31 are equally arranged in the peripheral direction of the bottom surface of the outer surface hole portion 31.
In the first embodiment, the outer surface hole portion 31 and the inner surface hole portion 41 arranged in parallel in the front-rear direction and the outer surface hole portion 31 and the inner surface hole portion 41 arranged in parallel in the left-right direction are mixed, In the present embodiment, the outer surface hole 31 and the inner surface holes 41 and 42 are arranged side by side in the left-right direction. In addition, the outer surface hole portion 31 and the inner surface hole portions 41 and 42 may be arranged in the front-rear direction, and a mixture of those arranged in the front-rear direction and those arranged in the left-right direction are mixed. May be.

外面穴部３１及び内面穴部４２夫々の内部空間は、部分的に一致している。連通開口５２は、外面穴部３１及び内面穴部４２夫々の内部空間における一致部分に位置している。
連通開口５２は、外面穴部３１及び内面穴部４２夫々の底面の周縁部から、夫々の内周面における底面に隣接する部分に亘って設けられている。 The internal space of each of the outer surface hole 31 and the inner surface hole 42 partially matches. The communication opening 52 is located at a matching portion in the inner space of each of the outer surface hole portion 31 and the inner surface hole portion 42.
The communication opening 52 is provided from the peripheral portion of the bottom surface of each of the outer surface hole portion 31 and the inner surface hole portion 42 to a portion adjacent to the bottom surface of each inner peripheral surface.

外面穴部３１の底面の周縁部における連通開口５２の配置位置は、図９及び図１０に向かって右端部であり、外面穴部３１の内周面における連通開口５２の配置位置は、図１０に向かって右下端部である。この右上端部は、上述の右端部に隣接している。
内面穴部４２の底面の周縁部における連通開口５２の配置位置は、図９及び図１０に向かって左端部であり、内面穴部４２の内周面における連通開口５２の配置位置は、図９及び図１０に向かって左上端部である。この左上端部は、上述の左端部に隣接している。
連通開口５２の開口面積は、連通開口５１の開口面積と同じである。つまり、噴出孔２２の開口量は、噴出孔２１の開口量の２倍である。 The arrangement position of the communication opening 52 in the peripheral edge portion of the bottom surface of the outer surface hole portion 31 is the right end portion in FIGS. 9 and 10, and the arrangement position of the communication opening 52 in the inner peripheral surface of the outer surface hole portion 31 is as shown in FIG. It is a lower right end part toward. This upper right end is adjacent to the above right end.
The arrangement position of the communication opening 52 in the peripheral edge portion of the bottom surface of the inner surface hole portion 42 is the left end portion in FIGS. 9 and 10, and the arrangement position of the communication opening 52 in the inner peripheral surface of the inner surface hole portion 42 is as shown in FIG. And it is a left upper end part toward FIG. This upper left end is adjacent to the above left end.
The opening area of the communication opening 52 is the same as the opening area of the communication opening 51. That is, the opening amount of the ejection hole 22 is twice the opening amount of the ejection hole 21.

浮揚装置１の内部の流体は、噴出孔２２における湾曲板状部１１１の内周面側の開口から噴出孔２２の内部を通って、噴出孔２２における湾曲板状部１１１から浮揚装置１の外部に噴出する。更に詳細には、浮揚装置１の内部の流体は、内面穴部４１，４２夫々の開口から内面穴部４１，４２夫々の内部、連通開口５１，５２、及び外面穴部３１の内部をこの順に通って、外面穴部３１の開口から浮揚装置１の外部に噴出する。
外面穴部３１及び内面穴部４１，４２夫々の開口面積は大きいが、連通開口５１，５２の開口面積は小さい。故に、噴出孔２２からは、外面穴部３１の直径以上の直径を有する貫通孔に比べて流体が噴出し難い。 The fluid inside the levitation device 1 passes through the inside of the ejection hole 22 from the opening on the inner peripheral surface side of the curved plate-like portion 111 in the ejection hole 22, and from the curved plate-like portion 111 in the ejection hole 22 to the outside of the levitation device 1. To erupt. More specifically, the fluid inside the levitation device 1 flows from the openings of the inner surface holes 41 and 42 to the inner surfaces of the inner surface holes 41 and 42, the communication openings 51 and 52, and the outer surface hole 31 in this order. It passes through and is ejected from the opening of the outer surface hole 31 to the outside of the levitation device 1.
The opening area of each of the outer surface hole portion 31 and the inner surface hole portions 41 and 42 is large, but the opening area of the communication openings 51 and 52 is small. Therefore, compared with the through-hole which has a diameter more than the diameter of the outer surface hole part 31, it is hard to eject a fluid from the ejection hole 22. FIG.

ところで、連通開口５１を通過する流体の通過方向は、内面穴部４１の開口中心側から外面穴部３１の開口中心側に向かう方向である。一方、連通開口５２を通過する流体の通過方向は、内面穴部４２の開口中心側から外面穴部３１の開口中心側に向かう方向である。従って、各噴出孔２２から噴出する流体の噴出方向は、外面穴部３１の中心軸に沿う方向である。つまり、噴出孔２２から噴出する流体の噴出方向は、外面穴部３１の底面に直交している。故に、シート状部材Ａは、湾曲板状部１１１から均一に押し上げられる。
以上の結果、シート状部材ＡがＵ字湾曲板部１１の外面に接触することが更に抑制される。 By the way, the passage direction of the fluid passing through the communication opening 51 is a direction from the opening center side of the inner surface hole portion 41 toward the opening center side of the outer surface hole portion 31. On the other hand, the passage direction of the fluid passing through the communication opening 52 is a direction from the opening center side of the inner surface hole portion 42 toward the opening center side of the outer surface hole portion 31. Therefore, the ejection direction of the fluid ejected from each ejection hole 22 is a direction along the central axis of the outer surface hole portion 31. That is, the ejection direction of the fluid ejected from the ejection hole 22 is orthogonal to the bottom surface of the outer surface hole portion 31. Therefore, the sheet-like member A is uniformly pushed up from the curved plate-like portion 111.
As a result, the sheet-like member A is further suppressed from coming into contact with the outer surface of the U-shaped curved plate portion 11.

本実施の形態の浮揚装置１の製造方法は、他面穿設工程にて内面穴部４１，４１，…と内面穴部４２，４２，…とを夫々設けることを除けば、実施の形態１の製造方法と同じである。
以上のような浮揚装置１及び浮揚装置１の製造方法は、実施の形態１の浮揚装置１及び浮揚装置１の製造方法と同様の作用効果を奏することができる。
なお、内面穴部４１，４２は同形状同寸法である構成に限定されない。また、内面穴部４１，４２は外面穴部３１の底面の周縁方向に非等配に並設されていてもよい。更に、外面穴部３１の底面の周縁方向に並設される内面穴部の個数は３個以上（例えば４個）でもよい。内面穴部の並設個数が多いほど、噴出孔の開口量は大きくなる。つまり、設計段階で内面穴部の並設個数を調整することによって、噴出孔の開口量を容易に調整することができる。 The manufacturing method of the levitating apparatus 1 of the present embodiment is the same as that of the first embodiment except that the inner surface hole portions 41, 41,... And the inner surface hole portions 42, 42,. The manufacturing method is the same.
The levitation device 1 and the method for manufacturing the levitation device 1 as described above can achieve the same effects as the levitation device 1 and the method for manufacturing the levitation device 1 of the first embodiment.
In addition, the inner surface hole parts 41 and 42 are not limited to the structure which is the same shape and the same dimension. Further, the inner surface hole portions 41 and 42 may be arranged in a non-uniform manner in the peripheral direction of the bottom surface of the outer surface hole portion 31. Further, the number of inner surface hole portions arranged in parallel in the peripheral direction of the bottom surface of the outer surface hole portion 31 may be three or more (for example, four). The larger the number of the inner hole portions arranged in parallel, the larger the opening amount of the ejection holes. That is, the opening amount of the ejection holes can be easily adjusted by adjusting the number of the inner surface hole portions arranged in parallel at the design stage.

実施の形態 ３．
図１１及び図１２は、本発明の実施の形態３に係る浮揚装置１が備えるＵ字湾曲板部１１の湾曲板状部１１１に設けられている噴出孔２３の構成を略示する平面図及び断面図である。図１１及び図１２は、実施の形態１の図５及び図６に対応する。
本実施の形態の浮揚装置１は、実施の形態１の浮揚装置１と略同様の構成である。以下では、実施の形態１との差異について説明し、その他、実施の形態１に対応する部分には同一符号を付してそれらの説明を省略する。 Embodiment 3. FIG.
11 and 12 are a plan view schematically showing the configuration of the ejection hole 23 provided in the curved plate-like portion 111 of the U-shaped curved plate portion 11 provided in the levitation device 1 according to Embodiment 3 of the present invention. It is sectional drawing. 11 and 12 correspond to FIGS. 5 and 6 of the first embodiment.
The levitation device 1 according to the present embodiment has substantially the same configuration as the levitation device 1 according to the first embodiment. Hereinafter, differences from the first embodiment will be described, and other parts corresponding to those of the first embodiment are denoted by the same reference numerals and description thereof will be omitted.

本実施の形態の湾曲板状部１１１には、実施の形態１の噴出孔２１，２１，…に替えて、複数個の噴出孔２３，２３，…が設けられている。噴出孔２３は、外面穴部３１、内面穴部４３、及び連通開口５３（開口）を有する。
内面穴部４３及び連通開口５３は、実施の形態１の内面穴部４１及び連通開口５１に対応する。両者の差異は、内面穴部４３の中心軸と外面穴部３１の中心軸との離隔距離が、内面穴部４１の中心軸と外面穴部３１の中心軸との離隔距離よりも短い（内面穴部４３の中心軸が内面穴部４１の中心軸よりも外面穴部３１の中心軸に近い）ことである。 The curved plate portion 111 of the present embodiment is provided with a plurality of ejection holes 23, 23,... Instead of the ejection holes 21, 21,. The ejection hole 23 has an outer surface hole portion 31, an inner surface hole portion 43, and a communication opening 53 (opening).
The inner surface hole 43 and the communication opening 53 correspond to the inner surface hole 41 and the communication opening 51 of the first embodiment. The difference between the two is that the distance between the central axis of the inner surface hole 43 and the central axis of the outer surface hole 31 is shorter than the distance between the central axis of the inner surface hole 41 and the central axis of the outer surface hole 31 (inner surface). The central axis of the hole 43 is closer to the central axis of the outer surface hole 31 than the central axis of the inner surface hole 41).

従って、連通開口５３の開口面積は実施の形態１の連通開口５１の開口面積よりも大きい。
また、噴出孔２３から噴出する流体の噴出方向は、噴出孔２１から噴射する流体の噴出方向と同様に、外面穴部３１の底面に対して傾斜しているが、外面穴部３１の底面に対する傾斜角度は、実施の形態１の場合よりも90°に近い。 Therefore, the opening area of the communication opening 53 is larger than the opening area of the communication opening 51 of the first embodiment.
Further, the ejection direction of the fluid ejected from the ejection hole 23 is inclined with respect to the bottom surface of the outer surface hole portion 31 in the same manner as the ejection direction of the fluid ejected from the ejection hole 21. The tilt angle is closer to 90 ° than in the first embodiment.

本実施の形態の浮揚装置１の製造方法は、他面穿設工程にて内面穴部４３，４３，…を夫々設けることを除けば、実施の形態１の製造方法と同じである。
以上のような浮揚装置１及び浮揚装置１の製造方法は、実施の形態１の浮揚装置１及び浮揚装置１の製造方法と同様の作用効果を奏することができる。
噴出孔２１，２３を比べればわかるように、外面穴部の中心軸と内面穴部の中心軸とが近いほど、連通開口の開口面積は大きく、噴出孔からの噴出方向は外面穴部の底面に対して垂直に近づく。つまり、設計段階で外面穴部と内面穴部との離隔距離を調整することによって、噴出孔の開口量と噴出孔からの流体の噴出方向とを調整することができる。 The manufacturing method of the levitating apparatus 1 according to the present embodiment is the same as the manufacturing method according to the first embodiment except that the inner surface holes 43, 43,.
The levitation device 1 and the method for manufacturing the levitation device 1 as described above can achieve the same effects as the levitation device 1 and the method for manufacturing the levitation device 1 of the first embodiment.
As can be seen by comparing the ejection holes 21 and 23, the closer the central axis of the outer surface hole portion is to the central axis of the inner surface hole portion, the larger the opening area of the communication opening, and the ejection direction from the ejection hole is the bottom surface of the outer surface hole portion. Nearly perpendicular to. That is, by adjusting the separation distance between the outer surface hole portion and the inner surface hole portion at the design stage, the opening amount of the ejection hole and the ejection direction of the fluid from the ejection hole can be adjusted.

実施の形態 ４．
図１３及び図１４は、本発明の実施の形態３に係る浮揚装置１が備えるＵ字湾曲板部１１の湾曲板状部１１１に設けられている噴出孔２４の構成を略示する平面図及び断面図である。図１３及び図１４は、実施の形態１の図５及び図６に対応する。
本実施の形態の浮揚装置１は、実施の形態１の浮揚装置１と略同様の構成である。以下では、実施の形態１との差異について説明し、その他、実施の形態１に対応する部分には同一符号を付してそれらの説明を省略する。 Embodiment 4 FIG.
13 and 14 are a plan view schematically showing the configuration of the ejection hole 24 provided in the curved plate-like portion 111 of the U-shaped curved plate portion 11 provided in the levitation device 1 according to Embodiment 3 of the present invention. It is sectional drawing. 13 and 14 correspond to FIGS. 5 and 6 of the first embodiment.
The levitation device 1 according to the present embodiment has substantially the same configuration as the levitation device 1 according to the first embodiment. Hereinafter, differences from the first embodiment will be described, and other parts corresponding to those of the first embodiment are denoted by the same reference numerals and description thereof will be omitted.

本実施の形態の湾曲板状部１１１には、実施の形態１の噴出孔２１，２１，…に替えて、複数個の噴出孔２４，２４，…が設けられている。噴出孔２４は、外面穴部３２、内面穴部４４、及び連通開口５４（開口）を有する。
外面穴部３２、内面穴部４４、及び連通開口５４は、実施の形態１の外面穴部３１、内面穴部４１、及び連通開口５１に対応する。両者の差異は、外面穴部３２の深さが外面穴部３１よりも浅く、内面穴部４４の深さが内面穴部４１よりも浅いことである。ただし、外面穴部３２の深さと内面穴部４４の深さとの和は、外面穴部３１の深さと内面穴部４１の深さとの和に等しい。 In the curved plate-like portion 111 of the present embodiment, a plurality of ejection holes 24, 24,... Are provided instead of the ejection holes 21, 21,. The ejection hole 24 has an outer surface hole 32, an inner surface hole 44, and a communication opening 54 (opening).
The outer surface hole 32, the inner surface hole 44, and the communication opening 54 correspond to the outer surface hole 31, the inner surface hole 41, and the communication opening 51 of the first embodiment. The difference between the two is that the depth of the outer surface hole portion 32 is shallower than the outer surface hole portion 31 and the depth of the inner surface hole portion 44 is shallower than the inner surface hole portion 41. However, the sum of the depth of the outer surface hole 32 and the depth of the inner surface hole 44 is equal to the sum of the depth of the outer surface hole 31 and the depth of the inner surface hole 41.

故に、噴出孔２４からの流体の噴出速度は、噴出孔２１からの噴出速度よりも速い。何故ならば、噴出孔２４の場合、連通開口５４から外面穴部３２の開口までが近く、連通開口５４を通った流体が外面穴部３２の狭い内部空間に拡散してから浮揚装置１の外部に噴出するので、流体の速度が低下し難いからである。   Therefore, the ejection speed of the fluid from the ejection hole 24 is faster than the ejection speed from the ejection hole 21. This is because, in the case of the ejection hole 24, the communication opening 54 is close to the opening of the outer surface hole portion 32, and the fluid that has passed through the communication opening 54 diffuses into the narrow inner space of the outer surface hole portion 32 before the outside of the levitation device 1. This is because the fluid velocity is difficult to decrease.

一方、噴出孔２１の場合、連通開口５１から外面穴部３１の開口までが遠く、連通開口５１を通った流体が外面穴部３１の広い内部空間に拡散してから浮揚装置１の外部に噴出するので、流体の速度が低下し易い。
換言すれば、高い噴出速度を得たい場合には噴出孔２４，２４，…を有する浮揚装置１が好適であり、低い噴出速度を得たい場合には噴出孔２１，２１，…を有する浮揚装置１が好適である。 On the other hand, in the case of the ejection hole 21, the distance from the communication opening 51 to the opening of the outer surface hole 31 is far, and the fluid that has passed through the communication opening 51 is diffused into the wide internal space of the outer surface hole 31 and then ejected to the outside of the levitation device 1. As a result, the speed of the fluid tends to decrease.
In other words, the levitation device 1 having the ejection holes 24, 24,... Is suitable when a high ejection speed is desired, and the levitation device having the ejection holes 21, 21,. 1 is preferred.

本実施の形態の浮揚装置１の製造方法は、他面穿設工程にて内面穴部４３，４３，…を夫々設けることを除けば、実施の形態１の製造方法と同じである。
以上のような浮揚装置１及び浮揚装置１の製造方法は、実施の形態１の浮揚装置１及び浮揚装置１の製造方法と同様の作用効果を奏することができる。
噴出孔２１，２４を比べればわかるように、設計段階で外面穴部及び内面穴部夫々の深さを調整することによって、噴出孔からの流体の噴出速度とを調整することができる。
なお、浮揚装置１には、噴出孔２１〜２４の内の複数種類が混在していてもよい。
実施の形態１〜４では、１個の外面穴部に対して１個以上の内面穴部が設けられている場合を例示したが、これに限定されず、１個の内面穴部に対して２個以上の外面穴部が設けられていてもよい。 The manufacturing method of the levitating apparatus 1 according to the present embodiment is the same as the manufacturing method according to the first embodiment except that the inner surface holes 43, 43,.
The levitation device 1 and the method for manufacturing the levitation device 1 as described above can achieve the same effects as the levitation device 1 and the method for manufacturing the levitation device 1 of the first embodiment.
As can be seen by comparing the ejection holes 21 and 24, the ejection speed of the fluid from the ejection holes can be adjusted by adjusting the depths of the outer surface hole and the inner surface hole at the design stage.
In the levitation device 1, a plurality of types of the ejection holes 21 to 24 may be mixed.
In Embodiments 1 to 4, the case where one or more inner surface hole portions are provided for one outer surface hole portion is illustrated, but the present invention is not limited thereto, and one inner surface hole portion is provided. Two or more outer surface holes may be provided.

今回開示された実施の形態は、全ての点で例示であって、制限的なものではないと考えられるべきである。本発明の範囲は、上述した意味ではなく、特許請求の範囲と均等の意味及び特許請求の範囲内での全ての変更が含まれることが意図される。
また、本発明の効果がある限りにおいて、浮揚装置１に、実施の形態１〜４に開示されていない構成要素が含まれていてもよい。
各実施の形態に開示されている構成要件（技術的特徴）はお互いに組み合わせ可能であり、組み合わせによって新しい技術的特徴を形成することができる。 The embodiment disclosed this time is to be considered as illustrative in all points and not restrictive. The scope of the present invention is not intended to include the above-described meanings, but is intended to include meanings equivalent to the claims and all modifications within the scope of the claims.
Moreover, as long as there exists an effect of this invention, the component which is not disclosed by Embodiment 1-4 may be contained in the levitation apparatus 1. FIG.
The constituent elements (technical features) disclosed in each embodiment can be combined with each other, and a new technical feature can be formed by the combination.

１ 浮揚装置
１１０ 平板状部材（板状部材）
１１１ 湾曲板状部
１１２ 平板状部
２１，２２，２３，２４ 噴出孔
３１，３２ 外面穴部
４１，４２，４３，４４ 内面穴部
５１，５２，５３，５４ 連通開口（開口）
Ａ シート状部材 1 Floating device 110 Flat plate member (plate member)
DESCRIPTION OF SYMBOLS 111 Curved plate-shaped part 112 Flat plate-shaped part 21,22,23,24 Ejection hole 31,32 Outer surface hole part 41,42,43,44 Inner surface hole part 51,52,53,54 Communication opening (opening)
A Sheet-like member

Claims (5)

弧状に湾曲した湾曲板状部を備え、
該湾曲板状部を夫々貫通する複数個の噴出孔を通って前記湾曲板状部の内部から外部へ流体が噴出し、噴出する流体によって、シート状部材を前記湾曲板状部の外周面から浮揚させる浮揚装置において、
各噴出孔は、
前記外周面に設けられた有底の外面穴部と、
前記湾曲板状部の内周面に設けられた有底の内面穴部と、
前記外面穴部及び内面穴部夫々の底面の周縁部に設けられており、前記外面穴部及び内面穴部を連通する開口と
を有し、
前記内面穴部の底面の前記外周面からの距離は、前記外面穴部の底面の前記外周面からの距離以下であることを特徴とする浮揚装置。 A curved plate-like portion curved in an arc shape,
A fluid is ejected from the inside of the curved plate-like portion to the outside through a plurality of ejection holes penetrating the curved plate-like portion, and the sheet-like member is moved from the outer peripheral surface of the curved plate-like portion by the ejected fluid. In the levitating device that levitates,
Each jet hole
A bottomed outer surface hole provided on the outer peripheral surface;
A bottomed inner surface hole provided on the inner peripheral surface of the curved plate-shaped portion;
Provided at the peripheral edge of the bottom surface of each of the outer surface hole portion and the inner surface hole portion, and has an opening communicating with the outer surface hole portion and the inner surface hole portion,
The distance from the outer peripheral surface of the bottom surface of the inner surface hole is equal to or less than the distance from the outer peripheral surface of the bottom surface of the outer surface hole. 前記内面穴部の底面の前記外周面からの距離は、前記外面穴部の底面の前記外周面からの距離より短く、
前記開口は、前記外面穴部及び内面穴部夫々の底面の周縁部から、夫々の内周面における前記底面に隣接する部分に亘って設けられていることを特徴とする請求項１に記載の浮揚装置。 The distance from the outer peripheral surface of the bottom surface of the inner hole portion is shorter than the distance from the outer peripheral surface of the bottom surface of the outer hole portion,
The said opening is provided over the part adjacent to the said bottom face in each inner peripheral surface from the peripheral part of the bottom face of each of the said outer surface hole part and an inner surface hole part, The Claim 1 characterized by the above-mentioned. Levitation device. 各外面穴部に対して複数個の前記内面穴部が前記外面穴部の底面の周縁方向に並設されていることを特徴とする請求項１又は２に記載の浮揚装置。   The levitation apparatus according to claim 1 or 2, wherein a plurality of the inner surface hole portions are arranged in parallel with each outer surface hole portion in a peripheral direction of a bottom surface of the outer surface hole portion. 前記湾曲板状部の湾曲方向両端部夫々に連なる平板状部を更に備え、
各平板状部には前記噴出孔は設けられていないことを特徴とする請求項１乃至３の何れか一項に記載の浮揚装置。 A flat plate portion connected to each of both ends in the bending direction of the curved plate portion;
The levitation apparatus according to any one of claims 1 to 3, wherein each of the flat plate portions is not provided with the ejection hole. 請求項１乃至４の何れか一項に記載の浮揚装置を製造する方法であって、
板状部材の一面に前記外面穴部を設ける一面穿設工程と、
前記板状部材の他面に前記内面穴部を設ける他面穿設工程と、
前記一面穿設工程及び他面穿設工程の終了後、前記一面を外側に向けて前記板状部材を弧状に湾曲する湾曲工程と
を備え、
前記一面穿設工程及び他面穿設工程を実行する際には、前記外面穴部の底面の前記一面からの距離が前記内面穴部の底面の前記一面からの距離以上になるよう前記外面穴部及び内面穴部を設けることによって、前記外面穴部及び内面穴部夫々の底面の周縁部に前記外面穴部及び内面穴部を連通する開口を設けることを特徴とする浮揚装置の製造方法。 A method for manufacturing a levitation device according to any one of claims 1 to 4,
One surface drilling step of providing the outer surface hole on one surface of the plate-like member;
An other surface drilling step of providing the inner surface hole on the other surface of the plate-like member;
A curve step of bending the plate-like member in an arc shape with the one surface facing outward after the one surface drilling step and the other surface drilling step;
When performing the one surface drilling step and the other surface drilling step, the outer surface hole is such that the distance from the one surface of the bottom surface of the outer surface hole portion is equal to or greater than the distance from the one surface of the bottom surface of the inner surface hole portion. A manufacturing method of a levitation device, wherein an opening that communicates the outer surface hole portion and the inner surface hole portion is provided at a peripheral portion of a bottom surface of each of the outer surface hole portion and the inner surface hole portion by providing a portion and an inner surface hole portion.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0648629A (en) * 1992-07-24 1994-02-22 Mitsubishi Heavy Ind Ltd Turn bar in rotary press
JP2004256264A (en) * 2003-02-27 2004-09-16 Fuji Photo Film Co Ltd Noncontact carrying device
US20050017123A1 (en) * 2003-06-17 2005-01-27 Helmut Meyer Turning bar for contactless guidance of a tubular film
JP2005145577A (en) * 2003-11-11 2005-06-09 Fuji Photo Film Co Ltd Non-contact carrying device
JP4215299B2 (en) * 1998-07-01 2009-01-28 Ｂｅｌｌｍａｔｉｃ株式会社 Object levitation device
JP2011251803A (en) * 2010-06-01 2011-12-15 Nihon Gore Kk Apparatus for changing direction of long sheet
JP5152477B2 (en) * 2007-08-22 2013-02-27 Ｂｅｌｌｍａｔｉｃ株式会社 Flotation device for film-like materials

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0648629A (en) * 1992-07-24 1994-02-22 Mitsubishi Heavy Ind Ltd Turn bar in rotary press
JP4215299B2 (en) * 1998-07-01 2009-01-28 Ｂｅｌｌｍａｔｉｃ株式会社 Object levitation device
JP2004256264A (en) * 2003-02-27 2004-09-16 Fuji Photo Film Co Ltd Noncontact carrying device
US20050017123A1 (en) * 2003-06-17 2005-01-27 Helmut Meyer Turning bar for contactless guidance of a tubular film
JP2005145577A (en) * 2003-11-11 2005-06-09 Fuji Photo Film Co Ltd Non-contact carrying device
JP5152477B2 (en) * 2007-08-22 2013-02-27 Ｂｅｌｌｍａｔｉｃ株式会社 Flotation device for film-like materials
JP2011251803A (en) * 2010-06-01 2011-12-15 Nihon Gore Kk Apparatus for changing direction of long sheet

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