WO2015166820A1 - Shape for center part of resin fan - Google Patents

Shape for center part of resin fan Download PDF

Info

Publication number
WO2015166820A1
WO2015166820A1 PCT/JP2015/061826 JP2015061826W WO2015166820A1 WO 2015166820 A1 WO2015166820 A1 WO 2015166820A1 JP 2015061826 W JP2015061826 W JP 2015061826W WO 2015166820 A1 WO2015166820 A1 WO 2015166820A1
Authority
WO
WIPO (PCT)
Prior art keywords
resin
fan
shape
resin fan
central portion
Prior art date
Application number
PCT/JP2015/061826
Other languages
French (fr)
Japanese (ja)
Inventor
加藤貴久
岩井晴義
礒部竜也
Original Assignee
日清紡メカトロニクス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日清紡メカトロニクス株式会社 filed Critical 日清紡メカトロニクス株式会社
Publication of WO2015166820A1 publication Critical patent/WO2015166820A1/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/329—Details of the hub
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps

Definitions

  • the present invention relates to the shape of a so-called air blower fan installed in an air conditioner such as an air conditioner (air conditioner) or an electronic device.
  • an air conditioner such as an air conditioner (air conditioner) or an electronic device.
  • a conventional resin fan 900 (see FIG. 8) is formed by injection molding a thermoplastic resin in a mold.
  • resin is injected (injected) into a mold (see FIG. 3 or FIG. 5) and molded, the thermoplastic melted into the cavity C from an injection port (gate) G provided at one or more positions in the mold K Resin is injected and molded.
  • the inlet G is provided in the central portion 902 of the resin fan 900 in consideration of the shape of the resin fan.
  • the injection port G is provided in a portion where the blade portion of the fan 900 (portion other than the central portion 902) is formed, the resin is injected into the curved portion, so that the resin is filled to every corner of the complicated shape. It becomes difficult.
  • the same number of the interface 905 of the resin injected from the injection port G as the injection ports G is formed at the center of the resin fan 900 as shown in FIG.
  • cracks may occur at the interface depending on the use conditions (repetition of temperature change) while the fan 900 is in use.
  • the object of the present invention is to provide the shape of the central portion of the resin fan so that no cracks or the like occur during use even if the molding inlet G is provided at a position corresponding to the central portion of such a resin fan. It is providing the resin-made fan which has such a shape of a center part.
  • the shape of the central part of the resin fan of the first invention for solving the above-mentioned problem is that the resin fan is formed by providing a resin inlet in the central part of the resin fan when molding the resin fan.
  • the reinforcing portion is provided with a reinforcing rib in the radial direction at a position facing the resin inlet with respect to the central axis of the resin fan.
  • the resin fan According to the shape of the central portion of the resin fan according to the first aspect of the present invention, if one resin inlet is formed in the central portion of the resin fan when molding the resin fan, the resin is positioned at a position facing the inlet. A bonding interface is formed. Reinforcing ribs are provided in the radial direction at positions corresponding to the interface. Therefore, even if the temperature rise and the temperature drop are repeated due to the use of the resin fan, no crack is generated at the resin interface.
  • the shape of the central part of the resin fan of the second invention for solving the above-mentioned problem is that the resin fan is formed by providing a plurality of resin inlets in the central part of the resin fan when molding the resin fan.
  • the reinforcing ribs are provided in the central portion in the radial direction at intermediate positions of the plurality of resin inlets with respect to the circumferential direction of the central axis of the resin fan. It is characterized by.
  • the shape of the central part of the resin fan of the third invention for solving the above-mentioned problem is that the resin fan is formed by providing a resin inlet at the central part of the resin fan when molding the resin fan.
  • a reinforcing rib is provided at the interface position of the resin formed when the resin fan is molded in the shape of the central portion.
  • the shape of the central portion of the resin fan according to the fourth invention is any one of the first to third inventions, wherein the relationship between the height dimension (H) and the width dimension (W) of the reinforcing rib is H ⁇ W. It is characterized by that.
  • the relationship between the height dimension (H) and the width dimension (W) of the reinforcing rib is H ⁇ W.
  • the resin fan of the fifth invention for solving the above-mentioned problems is characterized in that it has the shape of the central portion of the resin fan of the first invention to the fourth invention.
  • the schematic of the resin-made fans (propeller fan) of this invention Explanatory drawing of the shape of the center part of the resin-made fans of this invention of Embodiment 1.
  • FIG. Explanatory drawing of the resin injection port (gate) of the metal mold
  • FIG. Explanatory drawing of the shape of the center part of the resin-made fans of this invention of Embodiment 2.
  • FIG. Explanatory drawing of the relationship between the rib part for reinforcement and the resin interface.
  • FIG. 1 is a schematic view of a propeller fan which is an example of a resin fan to which the present invention is applied
  • FIG. 2 is an explanatory view of the shape of the central portion of the resin fan of the present invention of Embodiment 1.
  • FIG. 4 is explanatory drawing of the shape of the center part of the resin fan of this invention of Embodiment 2.
  • FIG. FIG. 5 is an explanatory view of a resin injection port (gate) of a mold at the time of molding a resin fan according to the second embodiment of the present invention, and FIG.
  • FIG. 6 is an explanatory view of a relationship between a reinforcing rib portion and a resin interface.
  • FIG. 7 is an explanatory diagram of a heat cycle test pattern
  • FIG. 8 is an explanatory diagram of the shape of the central portion of a conventional resin fan (propeller fan).
  • FIG. 1 shows a schematic configuration of a propeller fan 10 to which the shape of the central portion of the resin fan of the present invention is applied.
  • a composite material in which glass fiber or mica fiber is combined with AS resin or PP resin is used.
  • the present invention is not limited to the form and material of the resin fan.
  • the shape of the central portion (hereinafter abbreviated as “central portion”) of the resin fan of the present invention corresponds to 20 portion in FIG. That is, the central portion 20 indicates a portion other than the blade B of the resin fan 10.
  • FIG. 1 shows a situation in which a plurality of reinforcing ribs 40 are provided on the flat portion 30 opposite to the side where the driving motor A for the propeller fan of the central portion 20 is attached.
  • the reinforcing rib 40 is provided on the flat surface portion 30 in relation to an injection port (hereinafter referred to as a gate) G for injecting resin of a molding die.
  • the reinforcing rib 40 can also be provided on a flat portion or the like on the mounting side of the driving motor A.
  • the reinforcing rib 40 is provided on the flat portion 30 of the central portion 20 in the radial direction with respect to the central axis O of the resin fan. Regarding the dimensions of the reinforcing rib 40, it is preferable that the dimensional relationship between the width W and the height H satisfies H ⁇ W. Reinforcing ribs are provided in a radial direction opposite to the gate G of the resin fan molding die and the central axis O of the resin fan. It has been found that the resin is filled in the groove U for molding the reinforcing rib of the mold, but the resin interface 50 is less likely to occur in the resin in the groove U than in the portion above the groove. FIG.
  • FIG. 6 is an explanatory diagram of a situation in which a resin interface occurs when a resin fan is molded.
  • FIG. 6A illustrates the situation where the resin flow collides from the front and the interface 905 is formed when the conventional resin fan 900 is formed.
  • FIG. 6B illustrates a situation where a resin interface is formed when the resin fan 10 of the present invention is molded.
  • a groove U is provided at a position where the resin flow collides when the resin fan 10 is molded in the molding die.
  • the resin flow (arrow X) collides with each other in the portion other than the groove U (U1, U2), and an interface 50 is formed.
  • the resin flow (arrow Y) collides from the front in the groove U (U1, U2). Therefore, the resin interface 50 is hardly generated or not generated at all. In this way, even when the resin interface is generated in the flat portion 30 when the central portion 20 is molded, the interface 50 is not easily generated in the reinforcing rib 40. Therefore, the temperature change is repeated while the resin fan 10 is used. Also, the occurrence of cracks from the interface 50 can be prevented.
  • FIG. 8 shows a conventional propeller fan 900, and there is no reinforcing rib 50 at a location 902 corresponding to the central portion 20 in FIG. ⁇ Embodiment 1>
  • FIG. 2 shows the shape of the central portion 201 of the present invention.
  • 2A is a cross-sectional shape of the central portion 201
  • FIG. 2B is a view of the central portion 201 viewed from the side opposite to the side on which the driving motor A is attached.
  • the shape of the central portion of the first embodiment is such that one reinforcing rib 401 is provided on the flat portion 301.
  • FIG. 3 shows the cross-sectional shape of the mold K1 for molding the resin fan 101, and the relationship between the mold gate G1 and the central portion 201 of the resin fan. As shown in FIG.
  • the reinforcing rib 401 is provided on the flat portion 301 of the central portion 201 so as to face the gate G ⁇ b> 1 and the central axis O of the resin fan 101 in the radial direction. Therefore, in this embodiment, the reinforcing rib 401 is provided at one place on the resin fan 101.
  • the dimensions of the reinforcing rib 401 may be set so that the width W1 and the height H1 satisfy the relationship of H1 ⁇ W1.
  • the resin fan 101 having the central shape 201 of the present embodiment is molded as follows. As shown in FIG. 3B, the fixed mold M1 and the movable mold D1 are positioned and clamped by inserting the shaft portion Ds of the movable mold D1 into the recess N1 of the fixed mold M1. Molding is performed by injecting molten resin or the like (mixture of resin and fiber) from the gate G1 into the cavity C formed in this state.
  • the gate G1 is provided in the central portion 201 of the resin fan 101 so that the molten resin is injected into the blade portion B of the resin fan 101 in a balanced manner.
  • the molten resin flows in the direction of the arrow in FIG.
  • a single interface 501 is formed in the resin fan 101 so as to be opposed to the gate G1 and the central axis O of the resin fan 101 in the radial direction.
  • the position where the interface 501 is formed is a position where the reinforcing rib 401 is formed.
  • This interface 501 is a surface on which molten resins do not mix with each other. Therefore, the bonding strength at the interface 501 is also low, and cracking occurs along the interface 501 when the temperature change is repeated by using the resin fan 101.
  • a groove U1 is provided on the movable die D1 side in the radial direction where the interface 501 is formed, and one reinforcing rib 401 is provided on the flat portion 301 of the resin fan 101.
  • FIG. 4 shows the shape of the central portion 202 of the present invention.
  • 4A is a cross-sectional shape of the central portion 202
  • FIG. 4B is a view of the central portion 202 viewed from the side opposite to the side where the driving motor A is attached.
  • the central portion 202 of the second embodiment is provided with three reinforcing ribs 402 on the flat portion 302.
  • FIG. 5 shows the cross-sectional shape of the mold K2 for molding the resin fan 102 and the relationship between the resin gate G2 of the mold K2 and the central portion 202 of the resin fan 102. As shown in FIG.
  • the reinforcing rib 402 is provided on the flat surface portion 302 of the central portion 202 so as to face the gate G2 and the central axis O of the resin fan 102 in the radial direction.
  • FIG. 5B the sectional view of the fixed mold M2 and the sectional view of the movable mold D2 are expressed with different phases.
  • Three gates G2 are provided. Therefore, in this embodiment, the reinforcing ribs 402 are provided at three locations.
  • the dimensions of the reinforcing rib 402 may be set so that the width W2 and the height H2 satisfy the relationship of H2 ⁇ W2. This is the same as in the first embodiment.
  • the molding method of the resin fan 102 having the central shape 202 of the present embodiment is molded by the same method as in the first embodiment. Therefore, explanation is omitted.
  • the gate G2 is provided at the central portion 202 of the fan 102 so that the molten resin is injected and filled in the blade portion B of the resin fan 102 in a balanced manner.
  • the molten resin flows in the direction of the arrow in FIG.
  • three interfaces 502 are formed at intermediate positions in the circumferential direction of the three gates G2.
  • the position where the interface 502 is formed is a position where the reinforcing rib 402 is formed.
  • This interface 502 is a surface on which molten resins do not mix with each other. Accordingly, the bonding strength at the interface 502 is also low, and cracking occurs along the interface 502 when the temperature change is repeated during use of the resin fan.
  • a groove U2 is provided on the movable die D2 side in the radial direction at a location where the interface 502 is formed, and three reinforcing ribs 402 are provided on the flat portion 302 of the resin fan 102.
  • the shape of the central portion 20 of the resin fan 10 of the present invention is not limited to the first and second embodiments.
  • the reinforcing rib 401 is provided at one place, and in the second embodiment, the reinforcing rib 402 is provided at three places.
  • the number of reinforcing ribs provided in the central portion 20 may be appropriately increased or decreased depending on the size of the resin fan 10, the amount of resin to be injected and filled into the molding die K, the number of mold gates, and the like. ⁇ Cooling cycle test>
  • a cooling cycle test was performed on the resin fan 10 having the shape of the central portion 20 of the resin fan 10 of the present invention and the conventional resin fan 900 to confirm the occurrence of cracks.
  • the resin fan 10 of the example is a composite material in which the material contains 20% by weight of glass fiber and 10% by weight of mica fiber with respect to 100% by weight of PP resin (the reinforcing rib 3).
  • a resin fan 102 having a shape having a book was formed.
  • the resin fan 900 of the comparative example was molded in the same manner as in the example except that the shape of the central portion 902 was a shape having no reinforcing rib (see FIG. 8).
  • the shape of the central portion of the resin fan of the present invention has been described in the first and second embodiments.
  • the shape of the central portion of the present invention is not limited to the first and second embodiments, and can be applied as long as a reinforcing rib is provided at the interface position of the resin formed when the resin fan is molded. It is.
  • the shape of the central portion 20 of the resin fan 10 according to the present invention can be applied not only to the propeller fan but also to the central portion 20 such as a turbofan.
  • the resin fan at the time of fan molding can be used even when the fan 10 is used in severe temperature change environments. No cracks are generated from the interface 50 of the tenth, and durability and heat resistance are improved in each stage as compared with the prior art.
  • Resin fan (propeller fan) invention 20 Central part of resin fan (201: Embodiment 1, 202: Embodiment 2) 30 Plane portion of resin fan (301: Embodiment 1, 302: Embodiment 2) 40 Reinforcing rib (401: Embodiment 1, 402: Embodiment 2) 50 resin interface (501: Embodiment 1, 502: Embodiment 2) 900 Conventional resin fan (propeller fan) 902 Central part of conventional resin fan 903 Flat part of conventional resin fan 905 Resin interface of conventional resin fan O Center shaft (mold, resin fan ) B Blade part (blade part) of resin fan A drive motor C cavity K mold (K1: embodiment 1, K2: embodiment 2) D movable type (D1: Embodiment 1, D2: Embodiment 2) M fixed type (M1: Embodiment 1, M2: Embodiment 2) G resin injection port (G1: Embodiment 1, G2: Embodiment 2) N fixed mold side recess (N

Abstract

The purpose of the present invention is to provide: a shape for the center part of a resin fan, the shape never causing cracks or the like in the center part during use even if the resin fan is formed while a pouring opening (gate)(G) for forming is provided at a position corresponding to the center part; and a resin fan having such a shape for the center part of a resin fan. A shape for the center part of a resin fan formed while an opening, into which a resin is poured when forming the resin fan, is provided at one or more locations in the center part of the resin fan is configured in such a manner that a reinforcement rib is provided radially at the center part at a position opposite the center axis of the resin fan from the resin pouring opening.

Description

樹脂製ファンの中央部の形状Shape of the central part of the resin fan
　本発明は、いわゆる、エアコン（エアコンディショナー）等の空調装置やエレクトロニクス機器等に装備される送風用ファンの形状に関するものである。 The present invention relates to the shape of a so-called air blower fan installed in an air conditioner such as an air conditioner (air conditioner) or an electronic device.
　従来の樹脂製ファン９００（図８参照）は、熱可塑性樹脂を金型内に射出成形することにより成形される。金型（図３又は図５参照）内に樹脂を注入（射出）し成形する場合、金型Ｋに1箇所又は複数箇所設けられた注入口（ゲート）ＧからキャビティＣ内に溶融した熱可塑性樹脂を射出し成形される。 A conventional resin fan 900 (see FIG. 8) is formed by injection molding a thermoplastic resin in a mold. When resin is injected (injected) into a mold (see FIG. 3 or FIG. 5) and molded, the thermoplastic melted into the cavity C from an injection port (gate) G provided at one or more positions in the mold K Resin is injected and molded.
　注入口Ｇは、樹脂製ファンの形状を考慮し樹脂製ファン９００の中央部９０２に設けられている。ファン９００の翼部分（中央部９０２以外の部分）を成形する部分に注入口Ｇを設けた場合は、曲面状の部分に樹脂が注入されるので、複雑な形状の隅々まで樹脂を充填することが困難になる。 The inlet G is provided in the central portion 902 of the resin fan 900 in consideration of the shape of the resin fan. In the case where the injection port G is provided in a portion where the blade portion of the fan 900 (portion other than the central portion 902) is formed, the resin is injected into the curved portion, so that the resin is filled to every corner of the complicated shape. It becomes difficult.
　このような形態で注入口Ｇを設けると注入口Ｇから注入された樹脂の界面９０５が図８に示すように樹脂製ファン９００の中央部に注入口Ｇと同数形成されることになる。 If the injection ports G are provided in such a form, the same number of the interface 905 of the resin injected from the injection port G as the injection ports G is formed at the center of the resin fan 900 as shown in FIG.
　このような樹脂の界面９０５が形成されたファン９００の中央部９０２は、そのファン９００が使用中にその使用条件（温度変化の繰り返し）によりその界面において割れが発生することがあった。 In the central portion 902 of the fan 900 in which such a resin interface 905 is formed, cracks may occur at the interface depending on the use conditions (repetition of temperature change) while the fan 900 is in use.
　本発明の目的は、このような樹脂製ファンをその中央部に相当する位置に成形用の注入口Ｇを設けても使用中に割れ等の発生がまったく無い樹脂製ファンの中央部の形状及びそのような中央部の形状を有する樹脂製ファンを提供することである。 The object of the present invention is to provide the shape of the central portion of the resin fan so that no cracks or the like occur during use even if the molding inlet G is provided at a position corresponding to the central portion of such a resin fan. It is providing the resin-made fan which has such a shape of a center part.
　上記課題を解決するための第１発明の樹脂製ファンの中央部の形状は、樹脂製ファンを成形する際の樹脂の注入口を樹脂製ファンの中央部に１箇所設けて成形する樹脂製ファンの前記中央部の形状であって、前記中央部に、前記樹脂製ファンの中心軸に対して前記樹脂注入口と対向する位置に補強用のリブを半径方向に設けたことを特徴とする。 The shape of the central part of the resin fan of the first invention for solving the above-mentioned problem is that the resin fan is formed by providing a resin inlet in the central part of the resin fan when molding the resin fan. The reinforcing portion is provided with a reinforcing rib in the radial direction at a position facing the resin inlet with respect to the central axis of the resin fan.
　第１発明の樹脂製ファンの中央部の形状によれば、樹脂製ファンを成形する際の樹脂の注入口を樹脂製ファンの中央部に1箇所設けると、注入口と対向する位置に樹脂の接合界面が形成される。この界面に相当する位置に半径方向に補強用リブを設けている。従って樹脂製ファンを使用することによる温度上昇と温度低下の繰り返しがあっても樹脂界面で割れが発生することは無い。 According to the shape of the central portion of the resin fan according to the first aspect of the present invention, if one resin inlet is formed in the central portion of the resin fan when molding the resin fan, the resin is positioned at a position facing the inlet. A bonding interface is formed. Reinforcing ribs are provided in the radial direction at positions corresponding to the interface. Therefore, even if the temperature rise and the temperature drop are repeated due to the use of the resin fan, no crack is generated at the resin interface.
　上記課題を解決するための第２発明の樹脂製ファンの中央部の形状は、樹脂製ファンを成形する際の樹脂の注入口を樹脂製ファンの中央部に複数個所設けて成形する樹脂製ファンの前記中央部の形状であって、前記中央部に、前記樹脂製ファンの中心軸の円周方向に対して前記複数の各樹脂注入口の中間位置に補強用リブを半径方向に設けたことを特徴とする。 The shape of the central part of the resin fan of the second invention for solving the above-mentioned problem is that the resin fan is formed by providing a plurality of resin inlets in the central part of the resin fan when molding the resin fan. The reinforcing ribs are provided in the central portion in the radial direction at intermediate positions of the plurality of resin inlets with respect to the circumferential direction of the central axis of the resin fan. It is characterized by.
　第２発明の樹脂製ファンの中央部の形状によれば、第1発明と同様の効果が発現する。 According to the shape of the central portion of the resin fan of the second invention, the same effect as the first invention is exhibited.
　上記課題を解決するための第３発明の樹脂製ファンの中央部の形状は、樹脂製ファンを成形する際の樹脂の注入口を樹脂製ファンの中央部に設けて成形する樹脂製ファンの前記中央部の形状であって、樹脂製ファンを成形する際に形成される樹脂の界面位置に補強用リブを設けたことを特徴とする。 The shape of the central part of the resin fan of the third invention for solving the above-mentioned problem is that the resin fan is formed by providing a resin inlet at the central part of the resin fan when molding the resin fan. A reinforcing rib is provided at the interface position of the resin formed when the resin fan is molded in the shape of the central portion.
　第３発明の樹脂製ファンの中央部の形状によれば、第1発明と同様の効果が発現する。 According to the shape of the central portion of the resin fan of the third invention, the same effect as the first invention is exhibited.
　第４発明の樹脂製ファンの中央部の形状は、第1発明から第３発明のいずれかにおいて、前記補強用リブの高さ寸法（Ｈ）と幅寸法（Ｗ）の関係をＨ≧Ｗとしたことを特徴とする。 The shape of the central portion of the resin fan according to the fourth invention is any one of the first to third inventions, wherein the relationship between the height dimension (H) and the width dimension (W) of the reinforcing rib is H ≧ W. It is characterized by that.
　第４発明の樹脂製ファンの中央部の形状によれば、補強用リブの高さ寸法（Ｈ）と幅寸法（Ｗ）の関係をＨ≧Ｗとしている。樹脂製ファンを成形する際に金型内に注入充填される際に形成される樹脂の界面位置に補強用リブを成形する溝があり、その溝の幅寸法（Ｗ）よりも高さ（深さ）寸法（Ｈ）の方が大きいので、溝内の樹脂の流れが相互に正面からぶつかり合うことが無くなり補強用リブに相当する溝内では樹脂の界面は発生しない。従ってこのような中央部の形状を有する樹脂製ファンにおいては、補強用リブには界面の発生は無く、樹脂製ファンの使用中に温度変化が繰り返されても樹脂の界面（溝部以外の部分に発生する）から割れが発生する事はない。 According to the shape of the central portion of the resin fan of the fourth invention, the relationship between the height dimension (H) and the width dimension (W) of the reinforcing rib is H ≧ W. When molding a resin fan, there is a groove for molding a reinforcing rib at the interface position of the resin that is formed when the resin fan is injected and filled into the mold, and the height (depth) is higher than the width dimension (W) of the groove. Since the dimension (H) is larger, the resin flows in the groove do not collide with each other from the front, and the resin interface does not occur in the groove corresponding to the reinforcing rib. Therefore, in the resin fan having such a central shape, there is no occurrence of an interface in the reinforcing rib, and even if the temperature change is repeated during use of the resin fan, the resin interface (beside the groove) Cracks do not occur.
　上記課題を解決するための第５発明の樹脂製ファンは、第1発明から第４発明の樹脂製ファンの中央部の形状を有することを特徴とする。 The resin fan of the fifth invention for solving the above-mentioned problems is characterized in that it has the shape of the central portion of the resin fan of the first invention to the fourth invention.
　第５発明の樹脂製ファンによれば、第1発明と同様の効果が発現する。 According to the resin fan of the fifth invention, the same effect as the first invention is exhibited.
本発明の樹脂製ファン（プロペラファン）の概略図。The schematic of the resin-made fans (propeller fan) of this invention. 実施形態１の本発明の樹脂製ファンの中央部の形状の説明図。Explanatory drawing of the shape of the center part of the resin-made fans of this invention of Embodiment 1. FIG. 実施形態１の本発明の樹脂製ファン成形時の金型の樹脂注入口（ゲート）の説明図。Explanatory drawing of the resin injection port (gate) of the metal mold | die at the time of the resin-made fan shaping | molding of this invention of Embodiment 1. FIG. 実施形態２の本発明の樹脂製ファンの中央部の形状の説明図。Explanatory drawing of the shape of the center part of the resin-made fans of this invention of Embodiment 2. FIG. 実施形態２の本発明の樹脂製ファン成形時の金型の樹脂注入口（ゲート）の説明図。Explanatory drawing of the resin injection hole (gate) of the metal mold | die at the time of the resin-made fan shaping | molding of this invention of Embodiment 2. FIG. 補強用リブ部分と樹脂界面の関係の説明図。Explanatory drawing of the relationship between the rib part for reinforcement and the resin interface. ヒートサイクル試験パターンの説明図。Explanatory drawing of a heat cycle test pattern. 従来の樹脂製ファンの中央部の形状の説明図。Explanatory drawing of the shape of the center part of the conventional resin fans.
　以下、図面を参照して、本発明の形態を詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
　図１は本発明が適用される樹脂製ファンの一例であるプロペラファンの概略図であり、図２は実施形態１の本発明の樹脂製ファンの中央部の形状の説明図であり、図３は実施形態１の本発明の樹脂製ファン成形時の金型の樹脂注入口（ゲート）の説明図であり、図４は実施形態２の本発明の樹脂製ファンの中央部の形状の説明図であり、図５は実施形態２の本発明の樹脂製ファン成形時の金型の樹脂注入口（ゲート）の説明図であり、図６は補強用リブ部分と樹脂界面の関係の説明図であり、図７はヒートサイクル試験パターンの説明図であり、図８は従来の樹脂製ファン（プロペラファン）の中央部の形状の説明図である。 FIG. 1 is a schematic view of a propeller fan which is an example of a resin fan to which the present invention is applied, and FIG. 2 is an explanatory view of the shape of the central portion of the resin fan of the present invention of Embodiment 1. These are explanatory drawings of the resin injection port (gate) of the metal mold | die at the time of resin fan molding of this invention of Embodiment 1, FIG. 4 is explanatory drawing of the shape of the center part of the resin fan of this invention of Embodiment 2. FIG. FIG. 5 is an explanatory view of a resin injection port (gate) of a mold at the time of molding a resin fan according to the second embodiment of the present invention, and FIG. 6 is an explanatory view of a relationship between a reinforcing rib portion and a resin interface. FIG. 7 is an explanatory diagram of a heat cycle test pattern, and FIG. 8 is an explanatory diagram of the shape of the central portion of a conventional resin fan (propeller fan).
　図１は、本発明の樹脂製ファンの中央部の形状を適用したプロペラファン１０の概略構成を示している。材質は、ＡＳ樹脂やＰＰ樹脂にガラス繊維やマイカ繊維を複合化した複合材料が使用される。但し本発明は、樹脂製ファンの形態や材質に限定されるものではない。本発明の樹脂製ファンの中央部（以下、「中央部」と略称する）の形状は、図１の２０部分に相当する。すなわち中央部２０とは、樹脂製ファン１０のブレードＢ以外の部分を指すものとする。図１には、中央部２０のプロペラファンの駆動用モータＡが取り付けられる側と反対側の平面部３０に補強用リブ４０を複数個設けている状況が示されている。この平面部３０に補強用リブ４０を成形用金型の樹脂を注入する注入口（以下、ゲートという）Ｇとの関係で設けることが本発明の特徴である。尚補強用リブ４０は、駆動用モータＡの取付側の平面部等に設けることも可能である。 FIG. 1 shows a schematic configuration of a propeller fan 10 to which the shape of the central portion of the resin fan of the present invention is applied. As the material, a composite material in which glass fiber or mica fiber is combined with AS resin or PP resin is used. However, the present invention is not limited to the form and material of the resin fan. The shape of the central portion (hereinafter abbreviated as “central portion”) of the resin fan of the present invention corresponds to 20 portion in FIG. That is, the central portion 20 indicates a portion other than the blade B of the resin fan 10. FIG. 1 shows a situation in which a plurality of reinforcing ribs 40 are provided on the flat portion 30 opposite to the side where the driving motor A for the propeller fan of the central portion 20 is attached. It is a feature of the present invention that the reinforcing rib 40 is provided on the flat surface portion 30 in relation to an injection port (hereinafter referred to as a gate) G for injecting resin of a molding die. The reinforcing rib 40 can also be provided on a flat portion or the like on the mounting side of the driving motor A.
　補強用リブ４０は中央部２０の平面部３０上において樹脂製ファンの中心軸Ｏに対して半径方向に設けている。補強リブ４０の寸法は、その幅Ｗと高さＨの寸法関係をＨ≧Ｗとすることが好ましい。補強用リブを樹脂製ファン成形用の金型のゲートＧと樹脂製ファンの中心軸Ｏに対して半径方向に対向して設けている。金型の補強用リブ成形用の溝Ｕ内に樹脂が充填されるが溝Ｕ内の樹脂では溝より上の部分に比べ樹脂の界面５０が発生しにくいことが分かった。図６は、樹脂製ファンの成形時に樹脂の界面が発生する状況の説明図である。図６（ａ）は従来品の樹脂製ファン９００を成形する際に樹脂流れが正面からぶつかり合い界面９０５が形成される状況を説明したものである。一方図６（ｂ）は、本発明品の樹脂製ファン１０を成形する際に樹脂の界面が形成される状況を説明したものである。図６（ｂ）に示すように、成形用金型内で樹脂製ファン１０を成形する際に樹脂流れがぶつかり合う位置に溝Ｕを設けている。これにより、溝Ｕ（Ｕ１、Ｕ２）以外の部分では樹脂流れ（矢印Ｘ）がぶつかり合い界面５０形成される、しかし溝Ｕ（Ｕ１、Ｕ２）内では樹脂流れ（矢印Ｙ）が正面からぶつかり合うことが無いので樹脂の界面５０が発生しにくくなるかまったく発生しない。このように中央部２０を成形する際に平面部３０に樹脂界面が発生しても補強用リブ４０には界面５０が発生しにくいので、樹脂製ファン１０を使用中に温度変化が繰り返されても界面５０から割れが発生することを防止することができる。 The reinforcing rib 40 is provided on the flat portion 30 of the central portion 20 in the radial direction with respect to the central axis O of the resin fan. Regarding the dimensions of the reinforcing rib 40, it is preferable that the dimensional relationship between the width W and the height H satisfies H ≧ W. Reinforcing ribs are provided in a radial direction opposite to the gate G of the resin fan molding die and the central axis O of the resin fan. It has been found that the resin is filled in the groove U for molding the reinforcing rib of the mold, but the resin interface 50 is less likely to occur in the resin in the groove U than in the portion above the groove. FIG. 6 is an explanatory diagram of a situation in which a resin interface occurs when a resin fan is molded. FIG. 6A illustrates the situation where the resin flow collides from the front and the interface 905 is formed when the conventional resin fan 900 is formed. On the other hand, FIG. 6B illustrates a situation where a resin interface is formed when the resin fan 10 of the present invention is molded. As shown in FIG. 6B, a groove U is provided at a position where the resin flow collides when the resin fan 10 is molded in the molding die. As a result, the resin flow (arrow X) collides with each other in the portion other than the groove U (U1, U2), and an interface 50 is formed. However, the resin flow (arrow Y) collides from the front in the groove U (U1, U2). Therefore, the resin interface 50 is hardly generated or not generated at all. In this way, even when the resin interface is generated in the flat portion 30 when the central portion 20 is molded, the interface 50 is not easily generated in the reinforcing rib 40. Therefore, the temperature change is repeated while the resin fan 10 is used. Also, the occurrence of cracks from the interface 50 can be prevented.
　図８は、従来型のプロペラファン９００であり、図１の中央部２０に相当する場所９０２に補強用のリブ５０は無い。
＜実施形態１＞ FIG. 8 shows a conventional propeller fan 900, and there is no reinforcing rib 50 at a location 902 corresponding to the central portion 20 in FIG.
<Embodiment 1>
　図２及び図３により樹脂製ファン１０１の中央部２０１の形状の実施形態１を説明する。図２は、本発明の中央部２０１の形状を示している。図２（ａ）は、中央部２０１の断面形状であり、図２（ｂ）は中央部２０１の駆動用モータＡを取付けする側と反対側から視た図である。図から分かる様に実施形態１の中央部の形状は、平面部３０１に補強用リブ４０１が１個設けられている。図３は、樹脂製ファン１０１を成形する金型Ｋ１の断面形状、及び金型のゲートＧ１と樹脂製ファンの中央部２０１の関係を示したものである。図３に示すように補強用リブ４０１は、中央部２０１の平面部３０１にゲ－トＧ１と樹脂製ファン１０１の中心軸Ｏに対して半径方向に対向して設けている。従って本実施形態では樹脂製ファン１０１に補強用リブ４０１は１箇所設けられることになる。補強用リブ４０１の寸法は、幅Ｗ１と高さＨ１がＨ１≧Ｗ１の関係を満足するように設定すれば良い。 Embodiment 1 of the shape of the central portion 201 of the resin fan 101 will be described with reference to FIGS. FIG. 2 shows the shape of the central portion 201 of the present invention. 2A is a cross-sectional shape of the central portion 201, and FIG. 2B is a view of the central portion 201 viewed from the side opposite to the side on which the driving motor A is attached. As can be seen from the figure, the shape of the central portion of the first embodiment is such that one reinforcing rib 401 is provided on the flat portion 301. FIG. 3 shows the cross-sectional shape of the mold K1 for molding the resin fan 101, and the relationship between the mold gate G1 and the central portion 201 of the resin fan. As shown in FIG. 3, the reinforcing rib 401 is provided on the flat portion 301 of the central portion 201 so as to face the gate G <b> 1 and the central axis O of the resin fan 101 in the radial direction. Therefore, in this embodiment, the reinforcing rib 401 is provided at one place on the resin fan 101. The dimensions of the reinforcing rib 401 may be set so that the width W1 and the height H1 satisfy the relationship of H1 ≧ W1.
　本実施形態の中央部の形状２０１を有する樹脂製ファン１０１は、以下のように成形される。図３（ｂ）に示すように固定型Ｍ１と可動型Ｄ１とは、固定型Ｍ１の凹部Ｎ１に可動型Ｄ１のシャフト部Ｄｓが挿入され位置決めされ型締めされる。この状態において形成されるキャビティＣ内にゲートＧ１から溶融した樹脂等（樹脂と繊維の混合物）を射出することにより成形される。 The resin fan 101 having the central shape 201 of the present embodiment is molded as follows. As shown in FIG. 3B, the fixed mold M1 and the movable mold D1 are positioned and clamped by inserting the shaft portion Ds of the movable mold D1 into the recess N1 of the fixed mold M1. Molding is performed by injecting molten resin or the like (mixture of resin and fiber) from the gate G1 into the cavity C formed in this state.
　ゲートＧ１は、樹脂製ファン１０１のブレード部分Ｂに溶融樹脂がバランスよく射出されるために樹脂製ファン１０１の中央部２０１に設けられる。実施形態１では、ゲートＧ１は１箇所である。溶融樹脂がゲートＧ１から射出されると溶融樹脂は図３（ａ）の矢印方向に流動する。この結果、樹脂製ファン１０１内に、このゲートＧ１と樹脂製ファン１０１の中心軸Ｏに対して半径方向に対向して界面５０１が１箇所形成される。この界面５０１が形成される位置は、補強用リブ４０１が成形される位置である。 The gate G1 is provided in the central portion 201 of the resin fan 101 so that the molten resin is injected into the blade portion B of the resin fan 101 in a balanced manner. In the first embodiment, there is one gate G1. When the molten resin is injected from the gate G1, the molten resin flows in the direction of the arrow in FIG. As a result, a single interface 501 is formed in the resin fan 101 so as to be opposed to the gate G1 and the central axis O of the resin fan 101 in the radial direction. The position where the interface 501 is formed is a position where the reinforcing rib 401 is formed.
　この界面５０１は、溶融樹脂が相互に混じり合わない面である。従って界面５０１における接合強度も低く、樹脂製ファン１０１の使用により温度変化が繰り返されるとこの界面５０１に沿って割れが発生する。これを防止するために界面５０１が形成される箇所に半径方向に可動型Ｄ１側に溝Ｕ１を設け樹脂製ファン１０１の平面部３０１に補強リブ４０１を１箇所設ける。
＜実施形態２＞ This interface 501 is a surface on which molten resins do not mix with each other. Therefore, the bonding strength at the interface 501 is also low, and cracking occurs along the interface 501 when the temperature change is repeated by using the resin fan 101. In order to prevent this, a groove U1 is provided on the movable die D1 side in the radial direction where the interface 501 is formed, and one reinforcing rib 401 is provided on the flat portion 301 of the resin fan 101.
<Embodiment 2>
　図４及び図５により樹脂製ファン１０２の中央部２０２の形状の実施形態２を説明する。図４は、本発明の中央部２０２の形状を示している。図４（ａ）は、中央部２０２の断面形状であり、図４（ｂ）は中央部２０２の駆動用モータＡを取付けする側と反対側から視た図である。図から分かる様に実施形態２の中央部２０２の形状は、平面部３０２に補強用リブ４０２が３個設けられている。図５は、樹脂製ファン１０２を成形する金型Ｋ２の断面形状、及び金型Ｋ２の樹脂のゲートＧ２と樹脂製ファン１０２の中央部２０２の関係を示したものである。図５（ａ）に示すように補強用リブ４０２は、中央部２０２の平面部３０２にゲートＧ２と樹脂製ファン１０２の中心軸Ｏに対して半径方向に対向して設けている。尚図５（ｂ）において固定型Ｍ２の断面図と可動型Ｄ２の断面図は位相を変えて表現している。ゲートＧ２は、３箇所設けられている。従って本実施形態では補強用リブ４０２は３箇所設けられことになる。補強用リブ４０２の寸法は、幅Ｗ２と高さＨ２がＨ２≧Ｗ２の関係を満足するように設定すれば良い。この点は実施例１と同様である。 Embodiment 2 of the shape of the central portion 202 of the resin fan 102 will be described with reference to FIGS. FIG. 4 shows the shape of the central portion 202 of the present invention. 4A is a cross-sectional shape of the central portion 202, and FIG. 4B is a view of the central portion 202 viewed from the side opposite to the side where the driving motor A is attached. As can be seen from the figure, the central portion 202 of the second embodiment is provided with three reinforcing ribs 402 on the flat portion 302. FIG. 5 shows the cross-sectional shape of the mold K2 for molding the resin fan 102 and the relationship between the resin gate G2 of the mold K2 and the central portion 202 of the resin fan 102. As shown in FIG. 5A, the reinforcing rib 402 is provided on the flat surface portion 302 of the central portion 202 so as to face the gate G2 and the central axis O of the resin fan 102 in the radial direction. In FIG. 5B, the sectional view of the fixed mold M2 and the sectional view of the movable mold D2 are expressed with different phases. Three gates G2 are provided. Therefore, in this embodiment, the reinforcing ribs 402 are provided at three locations. The dimensions of the reinforcing rib 402 may be set so that the width W2 and the height H2 satisfy the relationship of H2 ≧ W2. This is the same as in the first embodiment.
　本実施形態の中央部の形状２０２を有する樹脂製ファン１０２の成形方法は実施形態１と同様の方法で成形される。従って説明は省略する。 The molding method of the resin fan 102 having the central shape 202 of the present embodiment is molded by the same method as in the first embodiment. Therefore, explanation is omitted.
　ゲートＧ２は、樹脂製ファン１０２のブレード部分Ｂに溶融樹脂がバランスよく注入充填するためにファン１０２の中央部２０２に設けられる。実施形態２では、ゲートＧ２は３箇所である。平面部３０２の円周方向に３箇所均等な位置に設けられている。溶融樹脂がゲートＧ２から射出されると溶融樹脂は図５（ａ）の矢印方向に流動する。この結果、樹脂製ファン１０２内に、この３箇所のゲートＧ２の円周方向の中間位置に界面５０２が３箇所形成される。この界面５０２が形成される位置は、補強用リブ４０２が成形される位置である。 The gate G2 is provided at the central portion 202 of the fan 102 so that the molten resin is injected and filled in the blade portion B of the resin fan 102 in a balanced manner. In the second embodiment, there are three gates G2. Three portions are provided at equal positions in the circumferential direction of the flat portion 302. When the molten resin is injected from the gate G2, the molten resin flows in the direction of the arrow in FIG. As a result, in the resin fan 102, three interfaces 502 are formed at intermediate positions in the circumferential direction of the three gates G2. The position where the interface 502 is formed is a position where the reinforcing rib 402 is formed.
　この界面５０２は溶融樹脂が相互に混じり合わない面である。従って界面５０２における接合強度も低く、樹脂製ファンの使用中に温度変化が繰り返されるとこの界面５０２に沿って割れが発生する。これを防止するために界面５０２が形成される箇所に半径方向に可動型Ｄ２側に溝Ｕ２を設け樹脂製ファン１０２の平面部３０２に補強用リブ４０２が３箇所設ける。 This interface 502 is a surface on which molten resins do not mix with each other. Accordingly, the bonding strength at the interface 502 is also low, and cracking occurs along the interface 502 when the temperature change is repeated during use of the resin fan. In order to prevent this, a groove U2 is provided on the movable die D2 side in the radial direction at a location where the interface 502 is formed, and three reinforcing ribs 402 are provided on the flat portion 302 of the resin fan 102.
　本発明の樹脂製ファン１０の中央部２０の形状は、実施形態１及び実施形態２に限定されるものではない。実施形態１においては補強用リブ４０１は１箇所であり、実施形態２では補強用リブ４０２は３箇所である。この中央部２０に設ける補強用リブの数量は、樹脂製ファン１０の大きさ、成形用の金型Ｋ内に注入充填する樹脂量、及び金型のゲートの数量等により適宜増減すれば良い。
＜冷熱サイクル試験＞ The shape of the central portion 20 of the resin fan 10 of the present invention is not limited to the first and second embodiments. In the first embodiment, the reinforcing rib 401 is provided at one place, and in the second embodiment, the reinforcing rib 402 is provided at three places. The number of reinforcing ribs provided in the central portion 20 may be appropriately increased or decreased depending on the size of the resin fan 10, the amount of resin to be injected and filled into the molding die K, the number of mold gates, and the like.
<Cooling cycle test>
　本発明の樹脂製ファン１０の中央部２０の形状を有する樹脂製ファン１０と従来型の樹脂製ファン９００について冷熱サイクル試験を行いその割れ発生について確認した。 A cooling cycle test was performed on the resin fan 10 having the shape of the central portion 20 of the resin fan 10 of the present invention and the conventional resin fan 900 to confirm the occurrence of cracks.
　実施例の樹脂製ファン１０は、材質をＰＰ樹脂１００重量％に対しガラス繊維２０重量％、マイカ繊維を１０重量％含有させた複合材料として実施形態２の中央部２０２の形状（補強用リブ３本を有する形状）を有する樹脂製ファン１０２を成形した。 The resin fan 10 of the example is a composite material in which the material contains 20% by weight of glass fiber and 10% by weight of mica fiber with respect to 100% by weight of PP resin (the reinforcing rib 3). A resin fan 102 having a shape having a book was formed.
　一方比較例の樹脂製ファン９００は、その中央部９０２の形状が補強リブを有しない形状（図８参照）としたこと以外は実施例と同様にして樹脂製ファン９００を成形した。 On the other hand, the resin fan 900 of the comparative example was molded in the same manner as in the example except that the shape of the central portion 902 was a shape having no reinforcing rib (see FIG. 8).
　実施例及び比較例の樹脂製ファンに対して、図７に示す冷熱サイクルの試験を行った。比較例（従来型）の樹脂製ファン９００は、３５サイクル目で目視により樹脂界面９０５（図８参照）からの割れ発生が認められた。一方実施例（発明品）の樹脂製ファン１０２は、１００サイクル目でも樹脂界面からの割れ発生は顕微鏡観察でも認められなかった。 The test of the thermal cycle shown in FIG. 7 was performed on the resin fans of the examples and comparative examples. In the resin fan 900 of the comparative example (conventional type), occurrence of cracks from the resin interface 905 (see FIG. 8) was visually observed at the 35th cycle. On the other hand, in the resin fan 102 of the example (invention product), the occurrence of cracks from the resin interface was not observed even under the 100th cycle even by microscopic observation.
　本発明の樹脂製ファンの中央部の形状を実施形態１及び実施形態２について説明した。しかしながら本発明の中央部の形状は、実施形態１及び実施形態２に限定されることはなく、樹脂製ファンの成形時に形成される樹脂の界面位置に補強用リブを設ける形態であれば適用可能である。 The shape of the central portion of the resin fan of the present invention has been described in the first and second embodiments. However, the shape of the central portion of the present invention is not limited to the first and second embodiments, and can be applied as long as a reinforcing rib is provided at the interface position of the resin formed when the resin fan is molded. It is.
　以上のとおり、本発明である樹脂製ファン１０の中央部２０の形状は、プロペラファンだけでなくターボファン等の中央部２０にも適用可能である。本発明の樹脂製ファンの中央部の形状（界面上に補強用リブを設ける構成）を採用することにより、当該ファン１０を過酷な温度変化の環境で使用してもファン成形時の樹脂製ファン１０の界面５０から割れが発生することが無く耐久性及び耐熱性が従来に比べ各段に向上する。 As described above, the shape of the central portion 20 of the resin fan 10 according to the present invention can be applied not only to the propeller fan but also to the central portion 20 such as a turbofan. By adopting the shape of the central part of the resin fan of the present invention (configuration in which reinforcing ribs are provided on the interface), the resin fan at the time of fan molding can be used even when the fan 10 is used in severe temperature change environments. No cracks are generated from the interface 50 of the tenth, and durability and heat resistance are improved in each stage as compared with the prior art.
　　１０　　樹脂製ファン（プロペラファン）発明品
　　２０　　樹脂製ファンの中央部（２０１：実施形態１、２０２：実施形態２）
　　３０　　樹脂製ファンの平面部（３０１：実施形態１、３０２：実施形態２）
　　４０　　補強用リブ（４０１：実施形態１、４０２：実施形態２）
　　５０　　樹脂界面（５０１：実施形態１、５０２：実施形態２）
　　９００　樹脂製ファン（プロペラファン）従来品
　　９０２　従来型の樹脂製ファンの中央部
　　９０３　従来型の樹脂製ファンの平面部
　　９０５　従来型の樹脂製ファンの樹脂界面
　　Ｏ　　　中心軸（金型、樹脂製ファン）
　　Ｂ　　　樹脂製ファンのブレード部分（翼部分）
　　Ａ    　駆動用モータ
　　Ｃ　　　キャビティ
　　Ｋ　　　金型（Ｋ１：実施形態１、Ｋ２：実施形態２）
　　Ｄ　  　可動型（Ｄ１：実施形態１、Ｄ２：実施形態２）
　　Ｍ  　　固定型（Ｍ１：実施形態１、Ｍ２：実施形態２）
　　Ｇ　　　樹脂注入口（Ｇ１：実施形態１、Ｇ２：実施形態２）
　　Ｎ　　　固定型側凹部（Ｎ１：実施形態１、Ｎ２：実施形態２）
　　Ｕ　　　溝部（Ｕ１：実施形態１、Ｕ２：実施形態２）
　　Ｈ　　　補強用リブの高さ寸法（Ｈ１：実施形態１、Ｈ２：実施形態２）
　　Ｗ　　　補強用リブの幅寸法（Ｗ１：実施形態１、Ｗ２：実施形態２） DESCRIPTION OF SYMBOLS 10 Resin fan (propeller fan) invention 20 Central part of resin fan (201: Embodiment 1, 202: Embodiment 2)
30 Plane portion of resin fan (301: Embodiment 1, 302: Embodiment 2)
40 Reinforcing rib (401: Embodiment 1, 402: Embodiment 2)
50 resin interface (501: Embodiment 1, 502: Embodiment 2)
900 Conventional resin fan (propeller fan) 902 Central part of conventional resin fan 903 Flat part of conventional resin fan 905 Resin interface of conventional resin fan O Center shaft (mold, resin fan )
B Blade part (blade part) of resin fan
A drive motor C cavity K mold (K1: embodiment 1, K2: embodiment 2)
D movable type (D1: Embodiment 1, D2: Embodiment 2)
M fixed type (M1: Embodiment 1, M2: Embodiment 2)
G resin injection port (G1: Embodiment 1, G2: Embodiment 2)
N fixed mold side recess (N1: Embodiment 1, N2: Embodiment 2)
U groove (U1: Embodiment 1, U2: Embodiment 2)
H Height dimension of reinforcing rib (H1: Embodiment 1, H2: Embodiment 2)
W Width of reinforcing rib (W1: Embodiment 1, W2: Embodiment 2)

Claims (5)

  1. 　樹脂製ファンを成形する際の樹脂の注入口を樹脂製ファンの中央部に１箇所設けて成形する樹脂製ファンの前記中央部の形状であって、
    　前記中央部に、前記樹脂製ファンの中心軸に対して前記樹脂注入口と対向する位置に補強用リブを半径方向に設けたことを特徴とする前記樹脂製ファンの中央部の形状。     The shape of the central portion of the resin fan formed by forming a resin inlet at the central portion of the resin fan at the time of molding the resin fan,
    A shape of the central portion of the resin fan, wherein a reinforcing rib is provided in the central portion in a radial direction at a position facing the resin inlet with respect to a central axis of the resin fan.
  2. 　樹脂製ファンを成形する際の樹脂の注入口を樹脂製ファンの中央部に複数個所設けて成形する樹脂製ファンの前記中央部の形状であって、
    　前記中央部に、前記樹脂製ファンの中心軸の円周方向に対して前記複数の各樹脂注入口の中間位置に補強用リブを半径方向に設けたことを特徴とする前記樹脂製ファンの中央部の形状。     The shape of the central portion of the resin fan formed by forming a plurality of resin inlets in the central portion of the resin fan when molding the resin fan,
    The center of the resin fan is characterized in that a reinforcing rib is provided in a radial direction at an intermediate position of each of the plurality of resin inlets with respect to a circumferential direction of a center axis of the resin fan at the center. Part shape.
  3. 　樹脂製ファンを成形する際の樹脂の注入口を樹脂製ファンの中央部に設けて成形する樹脂製ファンの前記中央部の形状であって、
    　樹脂製ファンを成形する際に形成される樹脂の界面位置に補強用リブを設けたことを特徴とする前記樹脂製ファンの中央部の形状。     The shape of the central portion of the resin fan formed by forming a resin inlet at the central portion of the resin fan when molding the resin fan,
    A shape of a central portion of the resin fan, wherein a reinforcing rib is provided at an interface position of the resin formed when the resin fan is molded.
  4. 　前記補強用リブの高さ寸法（Ｈ）と幅寸法（Ｗ）の関係をＨ≧Ｗとしたことを特徴とする請求項１から請求項３のいずれかに記載の前記樹脂製ファンの中央部の形状。 4. The central portion of the resin fan according to claim 1, wherein a relationship between a height dimension (H) and a width dimension (W) of the reinforcing rib is H ≧ W. 5. Shape.
  5. 　請求項１から請求項４のいずれかに記載の中央部の形状を有することを特徴とする樹脂製ファン。 A resinous fan having the shape of the central portion according to any one of claims 1 to 4.
PCT/JP2015/061826 2014-04-30 2015-04-17 Shape for center part of resin fan WO2015166820A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-093349 2014-04-30
JP2014093349A JP2015209832A (en) 2014-04-30 2014-04-30 Shape of central part of resin fan

Publications (1)

Publication Number Publication Date
WO2015166820A1 true WO2015166820A1 (en) 2015-11-05

Family

ID=54358553

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/061826 WO2015166820A1 (en) 2014-04-30 2015-04-17 Shape for center part of resin fan

Country Status (2)

Country Link
JP (1) JP2015209832A (en)
WO (1) WO2015166820A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD860427S1 (en) 2017-09-18 2019-09-17 Horton, Inc. Ring fan

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019157685A (en) * 2018-03-09 2019-09-19 日本電産サンキョー株式会社 Pump unit
US11767761B2 (en) 2018-08-02 2023-09-26 Horton, Inc. Low solidity vehicle cooling fan
JP7071682B1 (en) 2021-01-21 2022-05-19 ダイキン工業株式会社 Axial flow fan and air conditioner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003094494A (en) * 2001-09-25 2003-04-03 Denso Corp Fan and its molding method
JP2004308608A (en) * 2003-04-09 2004-11-04 Denso Corp Blower
EP1527867A1 (en) * 2003-10-28 2005-05-04 Behr GmbH & Co. KG Method of manufacturing a fan rotor and rotor manufactured according to that method
JP2009202481A (en) * 2008-02-28 2009-09-10 Mitsubishi Heavy Ind Ltd Fan made of plastic

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003094494A (en) * 2001-09-25 2003-04-03 Denso Corp Fan and its molding method
JP2004308608A (en) * 2003-04-09 2004-11-04 Denso Corp Blower
EP1527867A1 (en) * 2003-10-28 2005-05-04 Behr GmbH & Co. KG Method of manufacturing a fan rotor and rotor manufactured according to that method
JP2009202481A (en) * 2008-02-28 2009-09-10 Mitsubishi Heavy Ind Ltd Fan made of plastic

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD860427S1 (en) 2017-09-18 2019-09-17 Horton, Inc. Ring fan

Also Published As

Publication number Publication date
JP2015209832A (en) 2015-11-24

Similar Documents

Publication Publication Date Title
WO2015166820A1 (en) Shape for center part of resin fan
JP5353994B2 (en) Axial fan
CN105715583B (en) Centrifugal fan assembly
JP4969493B2 (en) Plastic fan
KR101149945B1 (en) Injection mold with conformal cooling channel for manufacturing plastic fans
KR20090094020A (en) Plastic fans having improved fan ring weld line strength
JP2015222071A5 (en)
JP6256218B2 (en) Manufacturing method of cable with resin molded body and cable with resin molded body
CN107428049B (en) Method for manufacturing impeller
JP5418845B2 (en) Rotating member made of resin injection molding
US11938659B2 (en) Insert to reduce weld line appearance defect in injection molding
JP5882533B1 (en) Multi-cavity injection molding method and mold
JP2010252612A (en) Split stator and stator
JP5132447B2 (en) Cross flow fan
JP6175285B2 (en) Anti-vibration device for blower fan and blower fan structure
US11338486B2 (en) Injection-moulding tool for producing a plastics component
JP7084777B2 (en) Blower impeller
JP6296514B2 (en) Motor rotor and method for manufacturing motor rotor
JP4279896B1 (en) Injection mold and method of manufacturing injection molded product
JP2012171218A (en) Method of manufacturing injection molded product of thermoplastic resin having glittering material and injection molded product
JP2021024483A (en) Duct-type register and its manufacturing method
CN102259409B (en) Core insert and injection mould by using core insert
WO2021039026A1 (en) Insulator and motor
JP6536974B2 (en) Method of manufacturing cable with resin molded body and cable with resin molded body
JP6478799B2 (en) Propeller fan and method for producing propeller fan

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15786818

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15786818

Country of ref document: EP

Kind code of ref document: A1