WO2022149370A1 - Reduction gear - Google Patents

Reduction gear Download PDF

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Publication number
WO2022149370A1
WO2022149370A1 PCT/JP2021/043694 JP2021043694W WO2022149370A1 WO 2022149370 A1 WO2022149370 A1 WO 2022149370A1 JP 2021043694 W JP2021043694 W JP 2021043694W WO 2022149370 A1 WO2022149370 A1 WO 2022149370A1
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WO
WIPO (PCT)
Prior art keywords
cover
ventilation
housing
speed reducer
ventilation member
Prior art date
Application number
PCT/JP2021/043694
Other languages
French (fr)
Japanese (ja)
Inventor
勝海 下田
拓造 伊藤
雅 青山
槙 橘田
大輝 増田
展資 山田
冠華 蔡
Original Assignee
Ｋｙｂ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 Ｋｙｂ株式会社 filed Critical Ｋｙｂ株式会社
Priority to CN202180081753.8A priority Critical patent/CN116568544A/en
Publication of WO2022149370A1 publication Critical patent/WO2022149370A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers

Definitions

  • the present invention relates to a speed reducer.
  • JP2020-50130A discloses a speed reducer provided in a steering device such as a vehicle.
  • a cover is attached to a housing accommodating the speed reducer.
  • the cover has a recessed recess inside the housing to which a breathing valve is attached.
  • the breath valve is attached so as to be located inside the housing from the outer surface of the cover.
  • the direction in which the reducer mounted on the vehicle is installed differs depending on the type of vehicle.
  • a speed reducer as described in JP2020-50130A since the breathing valve is provided in the recess of the cover, water such as rainwater collects in the recess of the cover depending on the direction in which the speed reducer is installed in the vehicle, and the breathing valve is submerged. Therefore, the function of the breathing valve may be impaired.
  • the present invention has been made in view of the above problems, and an object of the present invention is to maintain the function of the ventilation member regardless of the direction of the speed reducer.
  • a speed reducer having a housing having an opening, a cover for sealing the opening of the housing, and a ventilation member provided on the cover for ventilating the inside and outside of the housing.
  • the ventilation member has a ventilation film that allows the passage of gas, and the ventilation film is located outside the outer surface of the cover in the axial direction of the opening.
  • FIG. 1 is a partial cross-sectional view of a speed reducer according to an embodiment of the present invention.
  • FIG. 2 is a plan view of a cover provided with a ventilation member.
  • FIG. 3 is an enlarged cross-sectional view of the periphery of the ventilation member.
  • FIG. 4 is a plan view of the cover according to the modified example.
  • FIG. 5 is an enlarged cross-sectional view of the cover according to the modified example.
  • the speed reducer 100 according to the embodiment of the present invention will be described with reference to the drawings. In the present embodiment, the case where the speed reducer 100 is used for the electric power steering device will be described.
  • the electric power steering device decelerates the driving force of the electric motor (not shown) by the speed reducer 100 and applies it to the rack shaft (not shown) as a rotational torque that assists the steering of the steering wheel by the driver.
  • the speed reducer 100 includes a worm shaft 1 to which a driving force from an electric motor is input, a worm wheel 2 that meshes with the worm shaft 1, a pinion shaft 3 that rotates integrally with the worm wheel 2, and a pinion shaft 3.
  • a pinion 4 formed on the pinion shaft 3 and meshing with the rack shaft, and bearings 5 and 6 for rotatably supporting the pinion shaft 3 are provided.
  • the driving force from the electric motor is transmitted to the rack shaft through the worm shaft 1, the worm wheel 2, the pinion shaft 3, and the pinion 4, and acts to assist the steering force of the driver.
  • the speed reducer 100 includes a housing 11 having an opening 10, a cover 12 for sealing the opening 10 of the housing 11, and a ventilation member 13 provided on the cover 12 for ventilating the inside and outside of the housing 11.
  • the ventilation member 13 is configured to block the passage of water and allow the passage of gas. Even if the temperature inside the housing 11 rises due to the operation of the electric motor or the speed reducer 100 or the like, the pressure inside the housing 11 is kept constant by the ventilation member 13.
  • the housing 11 and the cover 12 are fixed by a plurality of bolts 15 as fastening members.
  • the cover 12 has a main body portion 12a inserted into the opening 10 of the housing 11 and a mounting portion 12b formed so as to project radially from the outer peripheral portion of the main body portion 12a. ..
  • the main body portion 12a is formed in a disk shape, and the mounting portion 12b is formed in a semicircular shape.
  • the main body 12a is provided with a communication hole 12c that communicates the inside and outside of the housing 11 sealed by the cover 12.
  • the communication hole 12c is provided in the center of the main body portion 12a and penetrates the main body portion 12a in the axial direction.
  • the communication hole 12c is formed with a large diameter portion 12d that opens outside the housing 11 and a small diameter portion 12e that opens inside the housing 11 and has a smaller diameter than the large diameter portion 12d.
  • An annular pedestal portion 19 is formed in the communication hole 12c by the large diameter portion 12d and the small diameter portion 12e.
  • the communication hole 12c is provided with the ventilation member 13.
  • An insertion hole 12f through which the bolt 15 is inserted is formed in the mounting portion 12b.
  • the mounting portion 12b is pressed and fixed to the end surface of the housing 11 by the fastening force of the bolt 15.
  • the cover 12 has an outer surface 18 facing the axially outward side of the opening 10 of the housing 11.
  • the outer surface 18 is formed of an outer surface 16 of the main body portion 12a and an outer surface 17 of the mounting portion 12b.
  • the outer surface 18 is formed in a plane shape in which the outer surface 16 and the outer surface 17 are continuous.
  • the cover 12 further has a wall portion 12 g surrounding the ventilation member 13.
  • the wall portion 12g is provided in the main body portion 12a, surrounds the communication hole 12c in an annular shape, and projects axially from the outer surface 16 of the main body portion 12a.
  • the wall portion 12g protects the ventilation member 13 from water and foreign matter, and does not constitute the outer surface 18 of the cover 12.
  • a slit 12h extending in the axial direction of the opening 10 of the housing 11 is formed in the wall portion 12g from the outer surface 16 to the top of the wall portion 12g.
  • the slit 12h penetrates the wall portion 12g in the radial direction.
  • the slit 12h is provided so that the bottom portion 12i is flush with the outer surface 16.
  • a plurality of slits 12h are provided at equal intervals in the circumferential direction of the wall portion 12g, and four slits 12h are provided in the present embodiment.
  • the ventilation member 13 has a main body portion 13a, a through hole 13b penetrating the main body portion 13a, and a ventilation film 13c provided in the through hole 13b.
  • the main body portion 13a is made of resin, for example, and has a large diameter portion 13d and a small diameter portion 13e.
  • An annular hook portion 13f is formed at the end of the small diameter portion 13e.
  • the through hole 13b penetrates the main body portion 13a in the axial direction.
  • the ventilation membrane 13c is a membrane that blocks the passage of water and allows the passage of gas, and is provided so as to seal the open end surface on the large diameter portion 13d side in the through hole 13b.
  • the ventilation member 13 has a main body portion 13a inserted into the communication hole 12c, and the pedestal portion 19 of the communication hole 12c is sandwiched between the large diameter portion 13d and the hook portion 13f to form a cover 12. It is attached.
  • a sealing member 14 that seals between the ventilation member 13 and the communication hole 12c is compressed and provided between the main body portion 13a and the pedestal portion 19.
  • the seal member 14 is an annular elastic member such as an O-ring.
  • the ventilation membrane 13c is located outside the outer surface 18 of the cover 12 in the axial direction of the opening 10 of the housing 11.
  • the ventilation film 13c is located outside each of the outer surface 16 of the main body portion 12a and the outer surface 17 of the mounting portion 12b in the axial direction of the opening portion 10. Further, the ventilation membrane 13c is provided so as not to be exposed in the axial direction from the wall portion 12g.
  • the direction in which the reducer is installed differs depending on the type of vehicle. Therefore, in a speed reducer provided with a cover, the cover may be installed in the vehicle so as to face upward in the vertical direction. In addition, the reducer may receive rainwater, muddy water, washing water, or the like. Therefore, in a speed reducer provided with a ventilation member on the cover, water may collect on the outer surface of the cover and the ventilation member may be submerged. In that case, the function of the ventilation member may be impaired.
  • the ventilation film 13c of the ventilation member 13 is located outside the outer surface 18 of the cover 12 in the axial direction of the opening 10 of the housing 11. That is, even if the speed reducer 100 is installed in the vehicle so that the cover 12 faces upward in the vertical direction, the ventilation membrane 13c is installed at a position higher than the outer surface 18 of the cover 12. Therefore, the ventilation membrane 13c is prevented from being submerged regardless of the orientation of the speed reducer 100. Therefore, the function of the ventilation member 13 can be maintained.
  • the wall portion 12g of the cover 12 is formed higher than the ventilation membrane 13c. Therefore, the wall portion 12g can protect the ventilation membrane 13c from water such as rainwater, muddy water, and washing water, and foreign substances. Further, even if the cover 12 receives high-pressure washing water during high-pressure washing of the vehicle, the wall portion 12g protects the ventilation membrane 13c. Therefore, the function of the ventilation member 13 can be maintained.
  • a slit 12h is provided in the wall portion 12g of the cover 12. Therefore, even if water enters the wall portion 12g, the water that has entered the wall portion 12g is discharged by the slit 12h. Therefore, the ventilation film 13c is prevented from being submerged in water, and the function of the ventilation member 13 can be maintained. Further, it is possible to prevent water from entering the housing 11 from between the cover 12 and the ventilation member 13.
  • the speed reducer 100 tells the vehicle so that the cover 12 faces upward in the vertical direction. Even if it is installed, the ventilation film 13c is at a position higher than the outer surface 18 of the cover 12. Therefore, the ventilation membrane 13c is prevented from being submerged regardless of the orientation of the speed reducer 100. Therefore, the function of the ventilation member 13 can be maintained.
  • the ventilation film 13c can be protected from water such as rainwater, muddy water, washing water, and foreign matter by the wall portion 12g. Further, even if the cover 12 receives high-pressure washing water during high-pressure washing of the vehicle, the wall portion 12g protects the ventilation membrane 13c. Therefore, the function of the ventilation member 13 can be maintained.
  • the slit 12h is provided in the wall portion 12g of the cover 12, even if water enters the wall portion 12g, the water that has entered the wall portion 12g is discharged by the slit 12h. Therefore, the ventilation film 13c is prevented from being submerged in water, and the function of the ventilation member 13 can be maintained. Further, it is possible to prevent water from entering the housing 11 from between the cover 12 and the ventilation member 13.
  • the ventilation member 13 is provided in the communication hole 12c in the center of the main body portion 12a of the cover 12.
  • the position where the ventilation member 13 is provided is not limited to this.
  • the communication hole 12c and the ventilation member 13 may be provided at a position away from the center of the main body portion 12a.
  • the outer surface 18 of the cover 12 is formed so that the outer surface 16 of the main body portion 12a and the outer surface 17 of the mounting portion 12b are continuous and flat.
  • the outer surface 18 is not limited to a flat surface.
  • the ventilation film 13c of the ventilation member 13 is located outside any surface of the outer surface 18 of the cover 12 in the axial direction of the opening 10 of the housing 11. good.
  • a step is formed between the main body portion 12a and the mounting portion 12b, and the outer surface 17 of the mounting portion 12b is more than the outer surface 16 of the main body portion 12a in the axial direction of the opening 10 of the housing 11. Will be described when it is located on the outside.
  • the ventilation film 13c of the ventilation member 13 may be located outside the outer surface 17 of the mounting portion 12b by raising the vicinity of the communication hole 12c in the main body portion 12a. Further, by lengthening the ventilation member 13 in the axial direction, the ventilation membrane 13c of the ventilation member 13 may be located outside the outer surface 17 of the mounting portion 12b.
  • the slit 12h is provided so that the bottom portion 12i thereof is flush with the outer surface 16.
  • the shape of the slit 12h is not limited to the above.
  • the bottom portion 12i of the slit 12h may be located between the outer surface 16 of the main body portion 12a and the ventilation membrane 13c in the axial direction of the opening 10 of the housing 11. That is, the bottom portion 12i of the slit 12h is located flush with the outer surface 16 of the main body portion 12a (the above-described embodiment) or outside the outer surface 16 in the axial direction of the opening portion 10, and is ventilated in the axial direction of the opening portion 10. It may be located inside the membrane 13c.
  • the bottom portion 12i of the slit 12h is not located lower than the outer surface 16 of the main body portion 12a, and the ventilation membrane 13c Is not a high position. Therefore, regardless of the direction of the speed reducer 100, the water that has entered the wall portion 12g is more reliably discharged, and the ventilation membrane 13c is prevented from being submerged. Therefore, the function of the ventilation member 13 can be maintained.
  • the shape of the slit 12h may be such that the water that has entered the wall portion 12g is discharged by the slit 12h and the ventilation membrane 13c is prevented from being submerged, and the number of the slits 12h is not limited to the above.
  • the speed reducer 100 includes a housing 11 having an opening 10, a cover 12 for sealing the opening 10 of the housing 11, and a ventilation member 13 provided on the cover 12 for ventilating the inside and outside of the housing.
  • the ventilation film 13c has a ventilation film 13c that allows gas to pass through, and the ventilation film 13c is located outside the outer surface 18 of the cover 12 in the axial direction of the opening 10.
  • the ventilation membrane 13c of the ventilation member 13 is located outside the outer surface 18 of the cover 12 in the axial direction of the opening 10 of the housing 11. Therefore, the ventilation membrane 13c is prevented from being submerged regardless of the orientation of the speed reducer 100. Therefore, the function of the ventilation member 13 can be maintained.
  • the cover 12 further has a wall portion 12g protruding from the outer surface 18 and surrounding the ventilation member 13, and the ventilation membrane 13c is provided so as not to be exposed axially from the wall portion 12g.
  • the wall portion 12g of the cover 12 is formed higher than the ventilation membrane 13c. Therefore, the wall portion 12g can protect the ventilation membrane 13c from water and foreign matter. Therefore, the function of the ventilation member 13 can be maintained.
  • the wall portion 12g is provided with a slit 12h extending in the axial direction.
  • the slit 12h discharges the water that has entered the wall portion 12g. Therefore, the ventilation film 13c is prevented from being submerged in water, and the function of the ventilation member 13 can be maintained.
  • the cover 12 further has a main body portion 12a provided with a wall portion 12g, and the bottom portion 12i of the slit 12h is located between the outer surface 16 of the main body portion 12a and the ventilation membrane 13c in the axial direction.
  • the slit 12h of the wall portion 12g allows the water that has entered the wall portion 12g to be discharged more reliably.
  • the present invention may also be applied to the speed reducers of various machines such as conveyors, winches, machine tools, and construction machines. can.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Details Of Gearings (AREA)
  • Arrangement Of Transmissions (AREA)
  • Power Steering Mechanism (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

This reduction gear (100) comprises a housing (11) having an opening part (10), a cover (12) that seals the opening part (10) of the housing (11), and a ventilation member (13) which is provided to the cover (12) and through which air passes in and out of the housing, the ventilation member (13) having a ventilation film (13c) that allows the passage of a gas, and the ventilation film (13c) being positioned farther outward than an outer surface (18) of the cover (12) in the axial direction of the opening part (10).

Description

減速機Decelerator
　本発明は、減速機に関する。 The present invention relates to a speed reducer.
　ＪＰ２０２０－５０１３０Ａには、車両等の転舵装置に設けられる減速機が開示されている。特許文献１に記載の減速機では、減速機を収容するハウジングにカバーが取り付けられる。カバーはハウジングの内側に凹んだ凹部を有し、凹部には呼吸弁が取り付けられる。呼吸弁は、カバーの外面よりハウジングの内側に位置するように取り付けられる。 JP2020-50130A discloses a speed reducer provided in a steering device such as a vehicle. In the speed reducer described in Patent Document 1, a cover is attached to a housing accommodating the speed reducer. The cover has a recessed recess inside the housing to which a breathing valve is attached. The breath valve is attached so as to be located inside the housing from the outer surface of the cover.
　車両に搭載される減速機は、車両の種類によって設置される向きが異なる。ＪＰ２０２０－５０１３０Ａに記載のような減速機では、呼吸弁がカバーの凹部に設けられるため、減速機が車両に設置される向きによっては、カバーの凹部に雨水等の水が溜まり、呼吸弁が水没して、呼吸弁の機能が損なわれるおそれがある。 The direction in which the reducer mounted on the vehicle is installed differs depending on the type of vehicle. In a speed reducer as described in JP2020-50130A, since the breathing valve is provided in the recess of the cover, water such as rainwater collects in the recess of the cover depending on the direction in which the speed reducer is installed in the vehicle, and the breathing valve is submerged. Therefore, the function of the breathing valve may be impaired.
　本発明は、上記の問題点に鑑みてなされたものであり、減速機の向きによらず、通気部材の機能を維持することを目的とする。 The present invention has been made in view of the above problems, and an object of the present invention is to maintain the function of the ventilation member regardless of the direction of the speed reducer.
　本発明のある態様によれば、減速機であって、開口部を有するハウジングと、前記ハウジングの前記開口部を封止するカバーと、前記カバーに設けられ前記ハウジング内外を通気する通気部材と、を備え、前記通気部材は、気体の通過を許容する通気膜を有し、前記通気膜は、前記開口部の軸方向において、前記カバーの外面よりも外側に位置する。 According to an aspect of the present invention, a speed reducer having a housing having an opening, a cover for sealing the opening of the housing, and a ventilation member provided on the cover for ventilating the inside and outside of the housing. The ventilation member has a ventilation film that allows the passage of gas, and the ventilation film is located outside the outer surface of the cover in the axial direction of the opening.
図１は本発明の実施形態に係る減速機の部分断面図である。FIG. 1 is a partial cross-sectional view of a speed reducer according to an embodiment of the present invention. 図２は通気部材が設けられたカバーの平面図である。FIG. 2 is a plan view of a cover provided with a ventilation member. 図３は通気部材周辺の拡大断面図である。FIG. 3 is an enlarged cross-sectional view of the periphery of the ventilation member. 図４は変形例に係るカバーの平面図である。FIG. 4 is a plan view of the cover according to the modified example. 図５は変形例に係るカバーの拡大断面図である。FIG. 5 is an enlarged cross-sectional view of the cover according to the modified example.
　図面を参照して、本発明の実施形態に係る減速機１００について説明する。本実施形態では、減速機１００が、電動パワーステアリング装置に用いられる場合について説明する。 The speed reducer 100 according to the embodiment of the present invention will be described with reference to the drawings. In the present embodiment, the case where the speed reducer 100 is used for the electric power steering device will be described.
　電動パワーステアリング装置は、ドライバによるハンドルの操舵を補助する回転トルクとして、電動モータ（図示せず）の駆動力を、減速機１００によって減速してラック軸（図示せず）に付与する。 The electric power steering device decelerates the driving force of the electric motor (not shown) by the speed reducer 100 and applies it to the rack shaft (not shown) as a rotational torque that assists the steering of the steering wheel by the driver.
　図１に示すように、減速機１００は、電動モータからの駆動力が入力されるウォームシャフト１と、ウォームシャフト１と噛み合うウォームホイール２と、ウォームホイール２と一体に回転するピニオン軸３と、ピニオン軸３に形成されラック軸と噛み合うピニオン４と、ピニオン軸３を回転自在に支持する軸受５，６と、を備える。 As shown in FIG. 1, the speed reducer 100 includes a worm shaft 1 to which a driving force from an electric motor is input, a worm wheel 2 that meshes with the worm shaft 1, a pinion shaft 3 that rotates integrally with the worm wheel 2, and a pinion shaft 3. A pinion 4 formed on the pinion shaft 3 and meshing with the rack shaft, and bearings 5 and 6 for rotatably supporting the pinion shaft 3 are provided.
　電動モータからの駆動力は、ウォームシャフト１，ウォームホイール２，ピニオン軸３，及びピニオン４を通じてラック軸に伝達され、ドライバの操舵力をアシストするように作用する。 The driving force from the electric motor is transmitted to the rack shaft through the worm shaft 1, the worm wheel 2, the pinion shaft 3, and the pinion 4, and acts to assist the steering force of the driver.
　減速機１００は、開口部１０を有するハウジング１１と、ハウジング１１の開口部１０を封止するカバー１２と、カバー１２に設けられハウジング１１内外を通気する通気部材１３と、を備える。通気部材１３は、水の通過を遮断し気体の通過は許容するように構成される。電動モータや減速機１００の動作等によってハウジング１１内の温度が上昇しても、通気部材１３によりハウジング１１内の圧力が一定に保たれる。ハウジング１１とカバー１２とは、締結部材としての複数のボルト１５によって固定される。 The speed reducer 100 includes a housing 11 having an opening 10, a cover 12 for sealing the opening 10 of the housing 11, and a ventilation member 13 provided on the cover 12 for ventilating the inside and outside of the housing 11. The ventilation member 13 is configured to block the passage of water and allow the passage of gas. Even if the temperature inside the housing 11 rises due to the operation of the electric motor or the speed reducer 100 or the like, the pressure inside the housing 11 is kept constant by the ventilation member 13. The housing 11 and the cover 12 are fixed by a plurality of bolts 15 as fastening members.
　図１，２に示すように、カバー１２は、ハウジング１１の開口部１０に挿入される本体部１２ａと、本体部１２ａの外周部から径方向に突出して形成される取付部１２ｂと、を有する。本体部１２ａは円板状に形成され、取付部１２ｂは半円状に形成される。 As shown in FIGS. 1 and 2, the cover 12 has a main body portion 12a inserted into the opening 10 of the housing 11 and a mounting portion 12b formed so as to project radially from the outer peripheral portion of the main body portion 12a. .. The main body portion 12a is formed in a disk shape, and the mounting portion 12b is formed in a semicircular shape.
　本体部１２ａには、カバー１２により封止されたハウジング１１の内外を連通する連通孔１２ｃが設けられる。連通孔１２ｃは、本体部１２ａの中央に設けられ、本体部１２ａを軸方向に貫通する。図３に示すように、連通孔１２ｃには、ハウジング１１外に開口する大径部１２ｄと、ハウジング１１内に開口し大径部１２ｄよりも小径な小径部１２ｅと、が形成される。大径部１２ｄと小径部１２ｅにより、連通孔１２ｃ内には、環状の台座部１９が形成される。後に詳細に説明するように、連通孔１２ｃには通気部材１３が設けられる。 The main body 12a is provided with a communication hole 12c that communicates the inside and outside of the housing 11 sealed by the cover 12. The communication hole 12c is provided in the center of the main body portion 12a and penetrates the main body portion 12a in the axial direction. As shown in FIG. 3, the communication hole 12c is formed with a large diameter portion 12d that opens outside the housing 11 and a small diameter portion 12e that opens inside the housing 11 and has a smaller diameter than the large diameter portion 12d. An annular pedestal portion 19 is formed in the communication hole 12c by the large diameter portion 12d and the small diameter portion 12e. As will be described in detail later, the communication hole 12c is provided with the ventilation member 13.
　取付部１２ｂには、ボルト１５が挿通する挿通孔１２ｆが形成される。取付部１２ｂは、ボルト１５の締結力により、ハウジング１１の端面に押圧されて固定される。 An insertion hole 12f through which the bolt 15 is inserted is formed in the mounting portion 12b. The mounting portion 12b is pressed and fixed to the end surface of the housing 11 by the fastening force of the bolt 15.
　カバー１２は、ハウジング１１の開口部１０の軸方向外側を向いている外面１８を有する。外面１８は、本体部１２ａの外面１６と、取付部１２ｂの外面１７と、から形成される。本実施形態では、外面１８は、外面１６と外面１７が連続した平面状に形成される。 The cover 12 has an outer surface 18 facing the axially outward side of the opening 10 of the housing 11. The outer surface 18 is formed of an outer surface 16 of the main body portion 12a and an outer surface 17 of the mounting portion 12b. In the present embodiment, the outer surface 18 is formed in a plane shape in which the outer surface 16 and the outer surface 17 are continuous.
　図２，３に示すように、カバー１２は、通気部材１３を囲う壁部１２ｇをさらに有する。壁部１２ｇは、本体部１２ａに設けられて連通孔１２ｃを環状に囲い、本体部１２ａの外面１６から軸方向に突出する。壁部１２ｇは、通気部材１３を水や異物から保護するものであり、カバー１２の外面１８を構成するものではない。壁部１２ｇには、外面１６から壁部１２ｇの頂部にわたって、ハウジング１１の開口部１０の軸方向に延びるスリット１２ｈが形成される。スリット１２ｈは、壁部１２ｇを径方向に貫通する。本実施形態では、スリット１２ｈは、底部１２ｉが外面１６と面一となるように設けられる。また、スリット１２ｈは、壁部１２ｇの周方向に等間隔を空けて複数設けられ、本実施形態では四つ設けられる。 As shown in FIGS. 2 and 3, the cover 12 further has a wall portion 12 g surrounding the ventilation member 13. The wall portion 12g is provided in the main body portion 12a, surrounds the communication hole 12c in an annular shape, and projects axially from the outer surface 16 of the main body portion 12a. The wall portion 12g protects the ventilation member 13 from water and foreign matter, and does not constitute the outer surface 18 of the cover 12. A slit 12h extending in the axial direction of the opening 10 of the housing 11 is formed in the wall portion 12g from the outer surface 16 to the top of the wall portion 12g. The slit 12h penetrates the wall portion 12g in the radial direction. In the present embodiment, the slit 12h is provided so that the bottom portion 12i is flush with the outer surface 16. Further, a plurality of slits 12h are provided at equal intervals in the circumferential direction of the wall portion 12g, and four slits 12h are provided in the present embodiment.
　図３に示すように、通気部材１３は、本体部１３ａと、本体部１３ａを貫通する貫通孔１３ｂと、貫通孔１３ｂに設けられる通気膜１３ｃと、を有する。本体部１３ａは、例えば樹脂製であり、大径部１３ｄと小径部１３ｅとを有する。小径部１３ｅの端部には、環状の鉤部１３ｆが形成される。貫通孔１３ｂは、本体部１３ａを軸方向に貫通する。通気膜１３ｃは、水の通過を遮断し気体の通過は許容する膜であり、貫通孔１３ｂ内における大径部１３ｄ側の開口端面を封止するように設けられる。 As shown in FIG. 3, the ventilation member 13 has a main body portion 13a, a through hole 13b penetrating the main body portion 13a, and a ventilation film 13c provided in the through hole 13b. The main body portion 13a is made of resin, for example, and has a large diameter portion 13d and a small diameter portion 13e. An annular hook portion 13f is formed at the end of the small diameter portion 13e. The through hole 13b penetrates the main body portion 13a in the axial direction. The ventilation membrane 13c is a membrane that blocks the passage of water and allows the passage of gas, and is provided so as to seal the open end surface on the large diameter portion 13d side in the through hole 13b.
　次に、カバー１２と通気部材１３との関係について詳しく説明する。 Next, the relationship between the cover 12 and the ventilation member 13 will be described in detail.
　図３に示すように、通気部材１３は、本体部１３ａが連通孔１２ｃ内に挿入され、大径部１３ｄと鉤部１３ｆの間で連通孔１２ｃの台座部１９を挟持することによってカバー１２に取り付けられる。本体部１３ａと台座部１９との間には、通気部材１３と連通孔１２ｃの間を封止するシール部材１４が圧縮して設けられる。シール部材１４は、例えばＯリング等の環状の弾性部材である。通気膜１３ｃは、ハウジング１１の開口部１０の軸方向において、カバー１２の外面１８よりも外側に位置する。具体的には、通気膜１３ｃは、開口部１０の軸方向において、本体部１２ａの外面１６と取付部１２ｂの外面１７のそれぞれよりも外側に位置する。また、通気膜１３ｃは、壁部１２ｇから軸方向に露出しないように設けられる。 As shown in FIG. 3, the ventilation member 13 has a main body portion 13a inserted into the communication hole 12c, and the pedestal portion 19 of the communication hole 12c is sandwiched between the large diameter portion 13d and the hook portion 13f to form a cover 12. It is attached. A sealing member 14 that seals between the ventilation member 13 and the communication hole 12c is compressed and provided between the main body portion 13a and the pedestal portion 19. The seal member 14 is an annular elastic member such as an O-ring. The ventilation membrane 13c is located outside the outer surface 18 of the cover 12 in the axial direction of the opening 10 of the housing 11. Specifically, the ventilation film 13c is located outside each of the outer surface 16 of the main body portion 12a and the outer surface 17 of the mounting portion 12b in the axial direction of the opening portion 10. Further, the ventilation membrane 13c is provided so as not to be exposed in the axial direction from the wall portion 12g.
　ここで、減速機は、車両の種類によって設置される向きが異なる。よって、カバーを備える減速機では、カバーが鉛直方向の上方を向くように車両に設置される場合がある。また、減速機は、雨水、泥水、洗浄水等を受ける場合もある。そのため、カバーに通気部材が設けられる減速機では、カバーの外面に水が溜まり、通気部材が水没してしまう可能性があり、その場合には、通気部材の機能が損なわれるおそれがある。 Here, the direction in which the reducer is installed differs depending on the type of vehicle. Therefore, in a speed reducer provided with a cover, the cover may be installed in the vehicle so as to face upward in the vertical direction. In addition, the reducer may receive rainwater, muddy water, washing water, or the like. Therefore, in a speed reducer provided with a ventilation member on the cover, water may collect on the outer surface of the cover and the ventilation member may be submerged. In that case, the function of the ventilation member may be impaired.
　本実施形態における減速機１００は、通気部材１３の通気膜１３ｃは、ハウジング１１の開口部１０の軸方向において、カバー１２の外面１８よりも外側に位置する。つまり、減速機１００がカバー１２が鉛直方向の上方を向くように車両に設置されても、通気膜１３ｃがカバー１２の外面１８よりも高い位置に設置されることになる。よって、減速機１００の向きによらず、通気膜１３ｃが水没することが防止される。したがって、通気部材１３の機能を維持することができる。 In the speed reducer 100 of the present embodiment, the ventilation film 13c of the ventilation member 13 is located outside the outer surface 18 of the cover 12 in the axial direction of the opening 10 of the housing 11. That is, even if the speed reducer 100 is installed in the vehicle so that the cover 12 faces upward in the vertical direction, the ventilation membrane 13c is installed at a position higher than the outer surface 18 of the cover 12. Therefore, the ventilation membrane 13c is prevented from being submerged regardless of the orientation of the speed reducer 100. Therefore, the function of the ventilation member 13 can be maintained.
　また、カバー１２の壁部１２ｇは、通気膜１３ｃよりも高く形成される。よって、壁部１２ｇにより通気膜１３ｃを雨水、泥水、洗浄水等の水や異物から保護することができる。さらに、車両の高圧洗浄の際に、カバー１２が高圧の洗浄水を受けても、壁部１２ｇにより通気膜１３ｃが保護される。したがって、通気部材１３の機能を維持することができる。 Further, the wall portion 12g of the cover 12 is formed higher than the ventilation membrane 13c. Therefore, the wall portion 12g can protect the ventilation membrane 13c from water such as rainwater, muddy water, and washing water, and foreign substances. Further, even if the cover 12 receives high-pressure washing water during high-pressure washing of the vehicle, the wall portion 12g protects the ventilation membrane 13c. Therefore, the function of the ventilation member 13 can be maintained.
　また、カバー１２の壁部１２ｇにはスリット１２ｈが設けられる。よって、壁部１２ｇ内に水が入り込んだとしても、スリット１２ｈにより、壁部１２ｇ内に入り込んだ水が排出される。したがって、通気膜１３ｃが水没することが防止され、通気部材１３の機能を維持することができる。また、カバー１２と通気部材１３との間からハウジング１１内に水が浸入することを防止することができる。 Further, a slit 12h is provided in the wall portion 12g of the cover 12. Therefore, even if water enters the wall portion 12g, the water that has entered the wall portion 12g is discharged by the slit 12h. Therefore, the ventilation film 13c is prevented from being submerged in water, and the function of the ventilation member 13 can be maintained. Further, it is possible to prevent water from entering the housing 11 from between the cover 12 and the ventilation member 13.
　以上の本実施形態によれば、以下に示す作用効果を奏する。 According to the above embodiment, the following actions and effects are exhibited.
　通気部材１３の通気膜１３ｃは、ハウジング１１の開口部１０の軸方向において、カバー１２の外面１８よりも外側に位置するため、減速機１００がカバー１２が鉛直方向の上方を向くように車両に設置されても、通気膜１３ｃがカバー１２の外面１８よりも高い位置となる。よって、減速機１００の向きによらず、通気膜１３ｃが水没することが防止される。したがって、通気部材１３の機能を維持することができる。 Since the ventilation film 13c of the ventilation member 13 is located outside the outer surface 18 of the cover 12 in the axial direction of the opening 10 of the housing 11, the speed reducer 100 tells the vehicle so that the cover 12 faces upward in the vertical direction. Even if it is installed, the ventilation film 13c is at a position higher than the outer surface 18 of the cover 12. Therefore, the ventilation membrane 13c is prevented from being submerged regardless of the orientation of the speed reducer 100. Therefore, the function of the ventilation member 13 can be maintained.
　カバー１２の壁部１２ｇは、通気膜１３ｃよりも高く形成されるため、壁部１２ｇによって通気膜１３ｃを雨水、泥水、洗浄水等の水や異物から保護することができる。さらに、車両の高圧洗浄の際に、カバー１２が高圧の洗浄水を受けても、壁部１２ｇにより通気膜１３ｃが保護される。したがって、通気部材１３の機能を維持することができる。 Since the wall portion 12g of the cover 12 is formed higher than the ventilation film 13c, the ventilation film 13c can be protected from water such as rainwater, muddy water, washing water, and foreign matter by the wall portion 12g. Further, even if the cover 12 receives high-pressure washing water during high-pressure washing of the vehicle, the wall portion 12g protects the ventilation membrane 13c. Therefore, the function of the ventilation member 13 can be maintained.
　カバー１２の壁部１２ｇにはスリット１２ｈが設けられるため、壁部１２ｇ内に水が入り込んだとしても、スリット１２ｈにより、壁部１２ｇ内に入り込んだ水が排出される。したがって、通気膜１３ｃが水没することが防止され、通気部材１３の機能を維持することができる。また、カバー１２と通気部材１３との間からハウジング１１内に水が浸入することを防止することができる。 Since the slit 12h is provided in the wall portion 12g of the cover 12, even if water enters the wall portion 12g, the water that has entered the wall portion 12g is discharged by the slit 12h. Therefore, the ventilation film 13c is prevented from being submerged in water, and the function of the ventilation member 13 can be maintained. Further, it is possible to prevent water from entering the housing 11 from between the cover 12 and the ventilation member 13.
　次に、本実施形態の変形例について説明する。 Next, a modified example of this embodiment will be described.
　上記実施形態では、通気部材１３がカバー１２の本体部１２ａの中央の連通孔１２ｃに設けられる。しかし、通気部材１３が設けられる位置はこれに限らない。例えば、図４に示すように、本体部１２ａの中央から離れた位置に連通孔１２ｃ及び通気部材１３が設けられてもよい。通気部材１３の位置を変えることにより、減速機１００が設置される車両の他の部品と通気部材１３が干渉することを回避することができる。 In the above embodiment, the ventilation member 13 is provided in the communication hole 12c in the center of the main body portion 12a of the cover 12. However, the position where the ventilation member 13 is provided is not limited to this. For example, as shown in FIG. 4, the communication hole 12c and the ventilation member 13 may be provided at a position away from the center of the main body portion 12a. By changing the position of the ventilation member 13, it is possible to prevent the ventilation member 13 from interfering with other parts of the vehicle in which the speed reducer 100 is installed.
　また、上記実施形態では、カバー１２の外面１８は本体部１２ａの外面１６と取付部１２ｂの外面１７とが連続した平面状に形成される。しかし、外面１８は平面状に限らない。外面１８がどのような形状であっても、通気部材１３の通気膜１３ｃが、ハウジング１１の開口部１０の軸方向において、カバー１２の外面１８のどの面よりも外側に位置する構成であればよい。例えば、図５に示すように、本体部１２ａと取付部１２ｂとの間に段差が形成され、ハウジング１１の開口部１０の軸方向において、取付部１２ｂの外面１７が本体部１２ａの外面１６よりも外側に位置する場合について説明する。この場合は、本体部１２ａにおける連通孔１２ｃの近傍を***させることにより、通気部材１３の通気膜１３ｃが取付部１２ｂの外面１７よりも外側に位置するようにすればよい。また、通気部材１３を軸方向に長くすることにより、通気部材１３の通気膜１３ｃが取付部１２ｂの外面１７よりも外側に位置するようにしてもよい。 Further, in the above embodiment, the outer surface 18 of the cover 12 is formed so that the outer surface 16 of the main body portion 12a and the outer surface 17 of the mounting portion 12b are continuous and flat. However, the outer surface 18 is not limited to a flat surface. Regardless of the shape of the outer surface 18, the ventilation film 13c of the ventilation member 13 is located outside any surface of the outer surface 18 of the cover 12 in the axial direction of the opening 10 of the housing 11. good. For example, as shown in FIG. 5, a step is formed between the main body portion 12a and the mounting portion 12b, and the outer surface 17 of the mounting portion 12b is more than the outer surface 16 of the main body portion 12a in the axial direction of the opening 10 of the housing 11. Will be described when it is located on the outside. In this case, the ventilation film 13c of the ventilation member 13 may be located outside the outer surface 17 of the mounting portion 12b by raising the vicinity of the communication hole 12c in the main body portion 12a. Further, by lengthening the ventilation member 13 in the axial direction, the ventilation membrane 13c of the ventilation member 13 may be located outside the outer surface 17 of the mounting portion 12b.
　また、上記実施形態では、スリット１２ｈは、その底部１２ｉが外面１６と面一となるように設けられる。しかし、スリット１２ｈの形状は上記に限らない。例えば、スリット１２ｈの底部１２ｉは、ハウジング１１の開口部１０の軸方向において、本体部１２ａの外面１６と通気膜１３ｃとの間に位置してもよい。つまり、スリット１２ｈの底部１２ｉは、本体部１２ａの外面１６と面一（上記実施形態）または開口部１０の軸方向において外面１６よりも外側に位置し、かつ、開口部１０の軸方向において通気膜１３ｃよりも内側に位置してもよい。この構成では、減速機１００がカバー１２が鉛直方向の上方を向くように車両に設置されても、スリット１２ｈの底部１２ｉは本体部１２ａの外面１６よりも低い位置とならず、通気膜１３ｃよりも高い位置ともならない。よって、減速機１００の向きによらず、壁部１２ｇ内に入り込んだ水がより確実に排出され、通気膜１３ｃが水没することが防止される。したがって、通気部材１３の機能を維持することができる。なお、スリット１２ｈの形状は、スリット１２ｈにより壁部１２ｇ内に入り込んだ水が排出され通気膜１３ｃが水没することが防止される構成であればよく、スリット１２ｈの個数も上記に限らない。 Further, in the above embodiment, the slit 12h is provided so that the bottom portion 12i thereof is flush with the outer surface 16. However, the shape of the slit 12h is not limited to the above. For example, the bottom portion 12i of the slit 12h may be located between the outer surface 16 of the main body portion 12a and the ventilation membrane 13c in the axial direction of the opening 10 of the housing 11. That is, the bottom portion 12i of the slit 12h is located flush with the outer surface 16 of the main body portion 12a (the above-described embodiment) or outside the outer surface 16 in the axial direction of the opening portion 10, and is ventilated in the axial direction of the opening portion 10. It may be located inside the membrane 13c. In this configuration, even if the speed reducer 100 is installed in the vehicle so that the cover 12 faces upward in the vertical direction, the bottom portion 12i of the slit 12h is not located lower than the outer surface 16 of the main body portion 12a, and the ventilation membrane 13c Is not a high position. Therefore, regardless of the direction of the speed reducer 100, the water that has entered the wall portion 12g is more reliably discharged, and the ventilation membrane 13c is prevented from being submerged. Therefore, the function of the ventilation member 13 can be maintained. The shape of the slit 12h may be such that the water that has entered the wall portion 12g is discharged by the slit 12h and the ventilation membrane 13c is prevented from being submerged, and the number of the slits 12h is not limited to the above.
　以上のように構成された本発明の実施形態の構成、作用、及び効果をまとめて説明する。 The configuration, operation, and effect of the embodiment of the present invention configured as described above will be collectively described.
　減速機１００は、開口部１０を有するハウジング１１と、ハウジング１１の開口部１０を封止するカバー１２と、カバー１２に設けられハウジング内外を通気する通気部材１３と、を備え、通気部材１３は、気体を透過する通気膜１３ｃを有し、通気膜１３ｃは、開口部１０の軸方向において、カバー１２の外面１８よりも外側に位置する。 The speed reducer 100 includes a housing 11 having an opening 10, a cover 12 for sealing the opening 10 of the housing 11, and a ventilation member 13 provided on the cover 12 for ventilating the inside and outside of the housing. The ventilation film 13c has a ventilation film 13c that allows gas to pass through, and the ventilation film 13c is located outside the outer surface 18 of the cover 12 in the axial direction of the opening 10.
　この構成では、通気部材１３の通気膜１３ｃは、ハウジング１１の開口部１０の軸方向において、カバー１２の外面１８よりも外側に位置する。よって、減速機１００の向きによらず、通気膜１３ｃが水没することが防止される。したがって、通気部材１３の機能を維持することができる。 In this configuration, the ventilation membrane 13c of the ventilation member 13 is located outside the outer surface 18 of the cover 12 in the axial direction of the opening 10 of the housing 11. Therefore, the ventilation membrane 13c is prevented from being submerged regardless of the orientation of the speed reducer 100. Therefore, the function of the ventilation member 13 can be maintained.
　また、カバー１２は、外面１８から突出し通気部材１３を囲う壁部１２ｇをさらに有し、通気膜１３ｃは、壁部１２ｇから軸方向に露出しないように設けられる。 Further, the cover 12 further has a wall portion 12g protruding from the outer surface 18 and surrounding the ventilation member 13, and the ventilation membrane 13c is provided so as not to be exposed axially from the wall portion 12g.
　この構成では、カバー１２の壁部１２ｇは、通気膜１３ｃよりも高く形成される。よって、壁部１２ｇによって通気膜１３ｃを水や異物から保護することができる。したがって、通気部材１３の機能を維持することができる。 In this configuration, the wall portion 12g of the cover 12 is formed higher than the ventilation membrane 13c. Therefore, the wall portion 12g can protect the ventilation membrane 13c from water and foreign matter. Therefore, the function of the ventilation member 13 can be maintained.
　また、壁部１２ｇには、軸方向に延びるスリット１２ｈが設けられる。 Further, the wall portion 12g is provided with a slit 12h extending in the axial direction.
　この構成では、スリット１２ｈにより、壁部１２ｇ内に入り込んだ水が排出される。したがって、通気膜１３ｃが水没することが防止され、通気部材１３の機能を維持することができる。 In this configuration, the slit 12h discharges the water that has entered the wall portion 12g. Therefore, the ventilation film 13c is prevented from being submerged in water, and the function of the ventilation member 13 can be maintained.
　また、カバー１２は、壁部１２ｇが設けられる本体部１２ａをさらに有し、スリット１２ｈの底部１２ｉは、軸方向において、本体部１２ａの外面１６と通気膜１３ｃとの間に位置する。 Further, the cover 12 further has a main body portion 12a provided with a wall portion 12g, and the bottom portion 12i of the slit 12h is located between the outer surface 16 of the main body portion 12a and the ventilation membrane 13c in the axial direction.
　この構成では、壁部１２ｇのスリット１２ｈにより、壁部１２ｇ内に入り込んだ水がより確実に排出される。 In this configuration, the slit 12h of the wall portion 12g allows the water that has entered the wall portion 12g to be discharged more reliably.
　以上、本発明の実施形態について説明したが、上記実施形態は本発明の適用例の一部を示したに過ぎず、本発明の技術的範囲を上記実施形態の具体的構成に限定する趣旨ではない。 Although the embodiments of the present invention have been described above, the above embodiments are only a part of the application examples of the present invention, and the technical scope of the present invention is limited to the specific configuration of the above embodiments. do not have.
　上記実施形態では、電動パワーステアリング装置の減速機１００に本発明を適用する例について説明したが、コンベア、ウィンチ、工作機械、建設機械等の種々の機械の減速機に本発明を適用することもできる。 In the above embodiment, an example of applying the present invention to the speed reducer 100 of the electric power steering device has been described, but the present invention may also be applied to the speed reducers of various machines such as conveyors, winches, machine tools, and construction machines. can.
　本願は２０２１年１月６日に日本国特許庁に出願された特願２０２１－１０６５に基づく優先権を主張し、この出願の全ての内容は参照により本明細書に組み込まれる。 This application claims priority based on Japanese Patent Application No. 2021-1065 filed with the Japan Patent Office on January 6, 2021, and the entire contents of this application are incorporated herein by reference.

Claims (4)

  1. 　減速機であって、
    　開口部を有するハウジングと、
    　前記ハウジングの前記開口部を封止するカバーと、
    　前記カバーに設けられ前記ハウジング内外を通気する通気部材と、を備え、
    　前記通気部材は、気体の通過を許容する通気膜を有し、
    　前記通気膜は、前記開口部の軸方向において、前記カバーの外面よりも外側に位置する減速機。     It ’s a reducer,
    A housing with an opening and
    A cover that seals the opening of the housing and
    A ventilation member provided on the cover to ventilate the inside and outside of the housing is provided.
    The ventilation member has a ventilation membrane that allows the passage of gas.
    The ventilation membrane is a speed reducer located outside the outer surface of the cover in the axial direction of the opening.
  2. 　請求項１に記載の減速機であって、
    　前記カバーは、前記外面から突出し前記通気部材を囲う壁部をさらに有し、
     前記通気膜は、前記壁部から前記軸方向に露出しないように設けられる減速機。     The speed reducer according to claim 1.
    The cover further comprises a wall portion that projects from the outer surface and surrounds the ventilation member.
    The ventilation film is a speed reducer provided so as not to be exposed from the wall portion in the axial direction.
  3. 　請求項２に記載の減速機であって、
    　前記壁部には、前記軸方向に延びるスリットが設けられる減速機。     The speed reducer according to claim 2.
    A speed reducer provided with a slit extending in the axial direction on the wall portion.
  4. 　請求項３に記載の減速機であって、
    　前記カバーは、前記壁部が設けられる本体部をさらに有し、
    　前記スリットの底部は、前記軸方向において、前記本体部の外面と前記通気膜との間に位置する減速機。     The speed reducer according to claim 3.
    The cover further has a main body portion on which the wall portion is provided.
    The bottom of the slit is a speed reducer located between the outer surface of the main body and the ventilation membrane in the axial direction.
PCT/JP2021/043694 2021-01-06 2021-11-29 Reduction gear WO2022149370A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202180081753.8A CN116568544A (en) 2021-01-06 2021-11-29 Speed reducer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-001065 2021-01-06
JP2021001065A JP7240425B2 (en) 2021-01-06 2021-01-06 Decelerator

Publications (1)

Publication Number Publication Date
WO2022149370A1 true WO2022149370A1 (en) 2022-07-14

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Application Number Title Priority Date Filing Date
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JP (1) JP7240425B2 (en)
CN (1) CN116568544A (en)
WO (1) WO2022149370A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013044396A (en) * 2011-08-24 2013-03-04 Mitsuba Corp Ventilation structure
JP2018206959A (en) * 2017-06-05 2018-12-27 株式会社デンソー Electronic device
JP2020050130A (en) * 2018-09-27 2020-04-02 株式会社ジェイテクト Steering gear

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013044396A (en) * 2011-08-24 2013-03-04 Mitsuba Corp Ventilation structure
JP2018206959A (en) * 2017-06-05 2018-12-27 株式会社デンソー Electronic device
JP2020050130A (en) * 2018-09-27 2020-04-02 株式会社ジェイテクト Steering gear

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JP7240425B2 (en) 2023-03-15
JP2022106213A (en) 2022-07-19

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