WO2020059534A1 - Structure de fixation pour évasement doucine - Google Patents

Structure de fixation pour évasement doucine Download PDF

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Publication number
WO2020059534A1
WO2020059534A1 PCT/JP2019/035141 JP2019035141W WO2020059534A1 WO 2020059534 A1 WO2020059534 A1 WO 2020059534A1 JP 2019035141 W JP2019035141 W JP 2019035141W WO 2020059534 A1 WO2020059534 A1 WO 2020059534A1
Authority
WO
WIPO (PCT)
Prior art keywords
bell mouth
fan
opening
convex portion
fitted
Prior art date
Application number
PCT/JP2019/035141
Other languages
English (en)
Japanese (ja)
Inventor
聡 竹中
Original Assignee
いすゞ自動車株式会社
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 いすゞ自動車株式会社 filed Critical いすゞ自動車株式会社
Priority to CN201980061315.8A priority Critical patent/CN112739894A/zh
Publication of WO2020059534A1 publication Critical patent/WO2020059534A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/10—Guiding or ducting cooling-air, to, or from, liquid-to-air heat exchangers

Definitions

  • the present disclosure relates to a bellmouth mounting structure, and more particularly to a bellmouth mounting structure that covers a gap between a fan shroud fixed to a radiator and a fan ring fixed to an engine.
  • one end of the bell mouth is fitted to a fan shroud fixed to a radiator, and the other end of the bell mouth is fixed to an engine.
  • a structure is disclosed in which a bell mouth is attached between the fan shroud and the fan ring by elastically contacting the fan ring.
  • JP 2001-123836 A Japanese Patent Application Publication No. 2014-09636
  • the technology of the present disclosure aims to effectively prevent the bell mouth from falling off by firmly holding the bell mouth on the fan ring.
  • the technology of the present disclosure has a technology in which one end is attached to a fan shroud fixed to a radiator, and the other end is attached to a fan ring surrounding the fan while being fixed to an engine, and a gap between the fan shroud and the fan ring is provided.
  • a cylindrical bell mouth mounting structure for covering at least one of the fan ring and the fan shroud, wherein the fitting mouth has a circular cross section and is open radially outward; And at least one of the openings on the one end side or the other end side, and a fitted convex portion having a circular cross section to be fitted into the fitting concave portion.
  • an inclined surface portion is provided outside the opening of the fitting recess so as to extend obliquely outward from the opening end of the fitting recess in the radial direction.
  • an opening width of the fitting concave portion is formed shorter than an outer diameter of the fitted convex portion, and the bell mouth is swingably held around the fitted convex portion as a fulcrum. preferable.
  • the fitting concave portion may be provided on the fan ring, and the fitted convex portion may be provided on a periphery of the opening on the other end side of the bell mouth.
  • the fitted convex portion has a circular convex portion formed in a substantially circular shape thicker than other portions of the bell mouth on the periphery of the opening of the bell mouth. May have a circular concave portion having a diameter larger than the diameter of the circular convex portion of the fitted convex portion, and an opening portion having an opening width shorter than the diameter of the circular convex portion. Good.
  • the bell mouth can be effectively prevented from falling off by firmly holding the bell mouth on the fan ring.
  • FIG. 1 is a schematic rear view showing a fan shroud structure to which a bellmouth mounting structure according to the present embodiment is applied.
  • FIG. 2 is a sectional view taken along line II-II of FIG.
  • FIG. 3 is a schematic cross-sectional view showing a bellmouth mounting structure according to the present embodiment.
  • FIG. 1 is a schematic rear view showing a fan shroud structure 10 to which a bellmouth mounting structure 20 according to the present embodiment is applied
  • FIG. 2 is a cross-sectional view taken along line AA of FIG.
  • the fan shroud structure 10 includes a fan shroud 11, a fan 12 disposed between the fan shroud 11 and the engine E (shown only in FIG. 2), a fan ring 13 fixed to the engine E and surrounding the fan 12.
  • a bell mouth 14 is provided to cover between the fan shroud 11 and the fan ring 13.
  • the fan shroud 11 is formed in a substantially rectangular cylindrical shape, and has an opening edge on one end side fixed to a back surface of a radiator (not shown) facing the engine E with a bolt or the like. On the other end of the fan shroud 11, an opening 11A having an inner diameter larger than the outer diameter of the fan 12 is formed.
  • the opening 11 ⁇ / b> A is formed in a substantially circular shape, and defines a ventilation space 15 (only shown in FIG. 2) for guiding gas to the fan 12.
  • the fan 12 is arranged so that its rotation axis coincides with the central axis (axis) of the fan ring 13, and is housed inside the fan ring 13.
  • the fan 12 is driven to rotate by the power of the engine E, for example.
  • the fan ring 13 is formed in a substantially cylindrical shape, and is fixed to the engine E (see FIG. 2) with bolts or the like (not shown). Further, a first annular flange portion 13A located on the fan shroud 11 side and a second annular flange portion 13B located on the engine E side are formed on the outer peripheral surface of the fan ring 13 (both in FIG. 2). Only shown). Further, between the first annular flange portion 13A and the second annular flange portion 13B of the fan ring 13, a fitting concave groove 21 (see FIG. Only shown).
  • the bell mouth 14 is formed in a substantially cylindrical shape with an elastic member such as a rubber material or a resin material, and covers a gap between the fan shroud 11 and the fan ring 13. For this reason, the bell mouth 14 is fitted and fixed to the annular concave portion 11B of the fan shroud 11 over substantially the entire periphery of the opening peripheral portion 14A on one end side (radiator side), and the opening on the other end side (engine side).
  • the fitted projection 22 provided on the periphery is fitted into the fitting recess 21 of the fan ring 13.
  • the bellmouth mounting structure 20 will be described in detail with reference to FIG.
  • FIG. 3 is a schematic sectional view showing the bellmouth mounting structure 20 according to the present embodiment.
  • the bellmouth mounting structure 20 includes a fitting recess 21 formed in the outer periphery of the fan ring 13, and a fitting protrusion provided in the periphery of the opening of the bellmouth 14 on the engine side. 22.
  • the fitting concave portion 21 is provided at a predetermined pitch in the circumferential direction on the outer peripheral portion of the fan ring 13, and the fitted convex portion 22 is provided at a position corresponding to the fitting concave portion 21 on the periphery of the opening of the bell mouth 14.
  • At least one pair of the fitting concave portion 21 and the fitting convex portion 22 is arranged on the upper and lower diagonal, or two pairs are arranged on the upper, lower, left and right diagonal.
  • the number and arrangement relationship of the fitting concave portion 21 and the fitted convex portion 22 are not limited to these, and can be appropriately set according to the size of the fan ring 13 and the bell mouth 14.
  • the fitting recess 21 is formed in a substantially circular cross section that opens outward in the radial direction of the fan ring 13.
  • the opening width W of the fitting recess 21 is formed smaller than the diameter D1 of the circular portion (W ⁇ D1), and the opening side is narrowed.
  • the inclined surfaces 21B and 21C are formed so that the distance between each of the inclined surfaces 21B and 21C increases toward the outside in the radial direction of the fan ring 13.
  • the fitted convex portion 22 is formed on the periphery of the opening of the bell mouth 14 in a substantially circular cross section which is thicker than other portions of the bell mouth 14.
  • the diameter D2 of the circular portion (circular convex portion) of the fitted convex portion 22 is longer than the opening width W of the fitting concave portion 21 and slightly smaller than the diameter D1 of the circular portion (circular concave portion) of the fitting concave portion 21. (W ⁇ D2 ⁇ D1).
  • the bell mouth 14 is held swingably in the direction of the arrow X in the drawing with the fitted projection 22 as a fulcrum, so that the relative movement between the fan ring 13 and the fan shroud 11 (see FIGS. On the other hand, the bell mouth 14 can flexibly follow and deform.
  • the fitting recess 21 having a substantially circular cross section that opens radially outward is provided on the outer peripheral portion of the fan ring 13, and another portion is provided on the periphery of the opening of the bell mouth 14 on the engine side.
  • the bell mouth 14 is fitted to the fan ring 13 by fitting the fitted protrusion 22 having a substantially thicker cross section and fitting the fitted protrusion 22 into the fitting recess 21. Is configured to be swingable and firmly held on the fulcrum.
  • the bell mouth 14 flexibly deforms to follow the relative movement between the fan ring 13 and the fan shroud 11 due to the vibration of the engine E and the like, and is reliably held by the fan ring 13, It is possible to effectively prevent the bellmouth 14 from falling off.
  • the bell mouth 14 and the fan ring are provided. 13 is configured to be effectively prevented. This can effectively prevent the bellmouth 14 from being damaged due to the bellmouth 14 contacting the fan ring 13.
  • the fitted projections 22 are not provided in an annular shape over the entire circumference of the bell mouth 14 but are provided partially at a predetermined pitch in the circumferential direction. That is, when assembling the bell mouth 14 to the fan ring 13, the worker can easily attach the bell mouth 14 to the fan ring 13 without spreading the bell mouth 14 with a large force, and the assembling workability is effectively improved. Can also be improved.
  • bellmouth mounting structure 20 of the present embodiment has been described as being applied to the mounting site between the bellmouth 14 and the fan ring 13, the present invention is applied to the mounting site between the bellmouth 14 and the fan shroud 11. Is also good.
  • the inclined surfaces 21B and 21C are formed in a flat shape, but the inclined surfaces 21B and 21C and the opening end 21A may be smoothly connected to each other in a curved shape.
  • fitting concave portion 21 and the fitted convex portion 22 have been described as being partially provided at a predetermined pitch in the circumferential direction, but may be provided in an annular shape over the entire circumference in the circumferential direction. Can also be.
  • the present invention has the effect of preventing the bellmouth from falling off, and is useful for a bellmouth mounting structure and the like.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne une structure de fixation (20), laquelle structure est destinée à un évasement doucine cylindrique (14) qui a un côté d'extrémité de celui-ci attaché à un carénage de ventilateur (11), et qui a l'autre côté d'extrémité de celui-ci attaché à une bague de ventilateur (13), et qui recouvre l'intervalle entre le carénage de ventilateur (11) et la bague de ventilateur (13), et ladite structure de fixation (20) comportant : un évidement d'ajustement (21) disposé sur la section circonférentielle externe de la bague de ventilateur (13) et ayant une section transversale circulaire s'ouvrant sur le côté radialement vers l'extérieur de la bague de ventilateur (13) ; et une saillie ajustée (22) disposée sur le bord circonférentiel d'une ouverture sur l'autre côté d'extrémité de l'évasement doucine (14) et ayant une section transversale circulaire destinée à être ajustée dans l'évidement d'ajustement (21).
PCT/JP2019/035141 2018-09-20 2019-09-06 Structure de fixation pour évasement doucine WO2020059534A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201980061315.8A CN112739894A (zh) 2018-09-20 2019-09-06 喇叭口的安装结构

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-175694 2018-09-20
JP2018175694A JP2020045841A (ja) 2018-09-20 2018-09-20 ベルマウスの取付構造

Publications (1)

Publication Number Publication Date
WO2020059534A1 true WO2020059534A1 (fr) 2020-03-26

Family

ID=69887306

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/035141 WO2020059534A1 (fr) 2018-09-20 2019-09-06 Structure de fixation pour évasement doucine

Country Status (3)

Country Link
JP (1) JP2020045841A (fr)
CN (1) CN112739894A (fr)
WO (1) WO2020059534A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5594494U (fr) * 1978-12-26 1980-06-30
JPS5824417U (ja) * 1981-08-07 1983-02-16 三菱自動車工業株式会社 シユラウド装置
JPH01131896A (ja) * 1987-11-16 1989-05-24 Nippon Denso Co Ltd 熱交換器用タンクの部品取付構造
JPH02119929U (fr) * 1989-03-15 1990-09-27
JPH084530A (ja) * 1994-06-23 1996-01-09 Aisin Chem Co Ltd 冷却ファンシュラウド装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0814045A (ja) * 1994-06-23 1996-01-16 Aisin Chem Co Ltd 冷却ファンシュラウド装置
JPH1030437A (ja) * 1996-07-18 1998-02-03 Toyota Autom Loom Works Ltd ラジエターにおけるファンの取り付け構造
JP4412830B2 (ja) * 2000-08-10 2010-02-10 株式会社小松製作所 エンジン冷却装置
JP2005188460A (ja) * 2003-12-26 2005-07-14 Hitachi Constr Mach Co Ltd 建設機械のエンジン冷却装置
JP6003294B2 (ja) * 2012-06-29 2016-10-05 いすゞ自動車株式会社 ファンシュラウド構造
CN103410845A (zh) * 2013-07-09 2013-11-27 郑州飞机装备有限责任公司 抗拉型球铰接结构
JP6672697B2 (ja) * 2015-10-23 2020-03-25 いすゞ自動車株式会社 ファンカバーの取付構造
JP2020045843A (ja) * 2018-09-20 2020-03-26 いすゞ自動車株式会社 ベルマウスの取付構造

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5594494U (fr) * 1978-12-26 1980-06-30
JPS5824417U (ja) * 1981-08-07 1983-02-16 三菱自動車工業株式会社 シユラウド装置
JPH01131896A (ja) * 1987-11-16 1989-05-24 Nippon Denso Co Ltd 熱交換器用タンクの部品取付構造
JPH02119929U (fr) * 1989-03-15 1990-09-27
JPH084530A (ja) * 1994-06-23 1996-01-09 Aisin Chem Co Ltd 冷却ファンシュラウド装置

Also Published As

Publication number Publication date
JP2020045841A (ja) 2020-03-26
CN112739894A (zh) 2021-04-30

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