WO2019078264A1 - アクチュエータ - Google Patents

アクチュエータ Download PDF

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Publication number
WO2019078264A1
WO2019078264A1 PCT/JP2018/038691 JP2018038691W WO2019078264A1 WO 2019078264 A1 WO2019078264 A1 WO 2019078264A1 JP 2018038691 W JP2018038691 W JP 2018038691W WO 2019078264 A1 WO2019078264 A1 WO 2019078264A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing portion
fastening
sealing surface
housing
ribs
Prior art date
Application number
PCT/JP2018/038691
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
大輔 北斗
田中　篤
高生 山本
Original Assignee
株式会社デンソー
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 株式会社デンソー filed Critical 株式会社デンソー
Publication of WO2019078264A1 publication Critical patent/WO2019078264A1/ja

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Classifications

    • 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
    • F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness

Definitions

  • the present disclosure relates to an actuator.
  • the housing is configured of a first housing portion and a second housing portion that form a housing space, and a fastening member that fastens them.
  • the fastening holes of the first housing part should be arranged outside the sealing surface. Therefore, the fastening portion of the first housing portion is formed to protrude outward with respect to the sealing surface.
  • the first housing portion having such a shape when an external force acts, stress tends to be concentrated in the periphery of the fastening portion, particularly at the root. Therefore, when applying an actuator to the form to which comparatively big external force acts, the strength improvement of a fastening part periphery is required.
  • This indication is made in view of the above-mentioned point, and the purpose is that the intensity of the circumference of the fastening part of the 1st housing part is high, and the sealability between the 1st housing part and the 2nd housing part is high. It is providing an actuator.
  • the actuator according to the present disclosure includes a first housing portion, a second housing portion forming a housing space with the first housing portion, and a fastening member fastening the first housing portion and the second housing portion. ing.
  • the first housing portion has a sealing surface in contact with the second housing portion, a fastening portion in which a fastening member is screwed, and a rib.
  • the fastening portion is formed to protrude outward in a direction perpendicular to the sealing surface.
  • the rib is located within a range that envelops the first housing portion in a direction perpendicular to the sealing surface and is adjacent to the fastening portion. Further, the rib is formed on the opposite side to the second housing portion with respect to the sealing surface, and has a parallel surface to the sealing surface on the sealing surface side.
  • strength of a fastening part periphery becomes high.
  • the rib within the range which encloses the first housing portion, it is possible to minimize the increase in weight for the rib arrangement, and to prevent a significant increase in the weight of the actuator.
  • the parallel surface of the rib located one step lower than the sealing surface as the clamp receiving seat one-chucking processing and vertical clamping can be performed. Therefore, the seal surface can be processed with high accuracy, and the sealability between the first housing portion and the second housing portion is improved.
  • FIG. 1 is an external perspective view of an actuator according to a first embodiment
  • FIG. 2 is a top view of the actuator
  • 3 is a cross-sectional view taken along line III-III in FIG.
  • FIG. 4 is a view showing a state in which the second housing portion etc. of the actuator of FIG.
  • FIG. 5 is a view when the first housing portion is viewed from the opening side
  • FIG. 6 is a view when the second housing part is viewed from the opening side
  • FIG. 7 is a view showing the first housing part as viewed in the direction of arrow VII of FIG. 5;
  • FIG. 1 is an external perspective view of an actuator according to a first embodiment
  • FIG. 2 is a top view of the actuator
  • 3 is a cross-sectional view taken along line III-III in FIG.
  • FIG. 4 is a view showing a state in which the second housing portion etc. of the actuator of FIG.
  • FIG. 5 is a view when the first housing portion is viewed from the opening side
  • FIG. 6 is
  • FIG. 8 is a view showing a first housing portion as viewed in the direction of arrow VIII of FIG. 5;
  • FIG. 9 is a view of the first housing portion of the actuator according to the second embodiment as viewed from the opening side;
  • FIG. 10 is a view when the first housing portion of the actuator according to the third embodiment is viewed from the opening side.
  • the actuator 10 according to the first embodiment shown in FIG. 1 outputs rotational power from an output shaft 38.
  • the rotational power is transmitted to the outside through an actuator lever 31 fixed to the output shaft 38.
  • the actuator 10 includes a housing 35, a motor 36 assembled to the housing 35, a speed reduction unit 37, and an output shaft 38.
  • the housing 35 has a first housing portion 41 and a second housing portion 42, and a fastening member 43 fastening them.
  • the first housing portion 41 and the second housing portion 42 form a housing space 44 inside.
  • the first housing portion 41 and the second housing portion 42 are made of a metal material such as an aluminum alloy, for example, and are die-cast.
  • a plurality of fastening members 43 are provided at a combination of the first housing portion 41 and the second housing portion 42. In the first embodiment, six fastening members 43 are provided.
  • the motor 36 is accommodated in the housing 35 and fixed to the first housing portion 41 by a screw 47.
  • the motor 36 may be, for example, a well-known direct current motor or a well-known stepping motor regardless of its type.
  • the output shaft 38 is rotatably supported by the first housing portion 41 and the second housing portion 42. One end of the output shaft 38 extends out of the housing 35.
  • the reduction unit 37 is a parallel shaft reduction gear that reduces the rotation of the motor 36 and transmits the reduced rotation to the output shaft 38. The rotation of the motor 36 is transmitted to the output shaft 38 via the pinion gear 51, the first intermediate gear 52, the second intermediate gear 53 and the final gear 54.
  • the first housing portion 41 has an opening 61 opened to the second housing portion 42 side.
  • the opening 61 has a seal surface 62 in contact with the second housing portion 42, and a fastening portion 63 and an attachment portion 64 which are formed to protrude outward in a direction perpendicular to the seal surface 62.
  • the fastening member 43 is screwed into the screw hole 65 of the fastening portion 63.
  • the attachment portion 64 is for attaching the first housing portion 41 to another member, and has an attachment hole 66 used for fixing.
  • the second housing part 42 has an opening 67 opened to the first housing part 41 side.
  • the opening portion 67 is formed along the sealing surface 68 in contact with the first housing portion 41, the fastening portion 69 formed to project outward in a view perpendicular to the sealing surface 68, and the sealing surface 68.
  • an annular groove 71 is provided in the annular groove 71. The seal member 73 is sandwiched and compressed between the bottom surface of the annular groove 71 and the seal surface 62, and seals the space between the seal surface 62 and the seal surface 68 without any gap.
  • the first housing portion 41 further includes a plurality of ribs 74.
  • the rib 74 is located within a range of a line (hereinafter, an envelope L) which envelops the first housing portion 41 in a direction perpendicular to the sealing surface 62 and is adjacent to the fastening portion 63. That is, the rib 74 is disposed in the gap between the envelope L and the outer periphery of the sealing surface 62. Three ribs 74 are provided.
  • the ribs 74 are arranged such that at least one fastening portion 63 exists between the ribs 74 aligned along the outer periphery of the opening 61 of the first housing portion 41.
  • the ribs 74 are arranged such that the same number of fastening portions 63 exist between the ribs 74. That is, the two fastening portions 63 and one rib 74 are arranged alternately along the outer periphery of the opening 61.
  • the particular ribs 741, 742 are arranged adjacent to the particular fastenings 631, 632 located next to the attachment 64. That is, the ribs 741 and 742 are disposed in the vicinity of the mounting hole 66 of the mounting portion 64.
  • the rib 74 is formed on the side opposite to the second housing portion 42 with respect to the sealing surface 62. That is, the rib 74 does not protrude from the seal surface 62 toward the second housing portion 42 and is formed at a position one step lower than the seal surface 62 when viewed from the seal surface 62 side.
  • the rib 74 has a surface (hereinafter, parallel surface 75) parallel to the sealing surface 62 on the sealing surface 62 side.
  • the parallel surfaces 75 are arranged on the same plane.
  • the seal surface 62 shown in FIG. 5 and the flat surface 76 in the first housing portion 41 are formed by cutting.
  • the parallel surfaces 75 of the ribs 74 act as a seat for the clamp when machining the sealing surface 62 and the flat surface 76.
  • the posture of the first housing portion 41 can be stabilized by pressing the first housing portion 41 against the position control jig in the direction perpendicular to the sealing surface 62 (that is, the normal direction). It is.
  • the seal surface 62 and the flat surface 76 are processed at one time with one chuck without re-clamping.
  • three ribs 77 similar to the ribs 74 of the first housing portion 41 are also provided in the second housing portion 42.
  • the parallel surface 78 of the rib 77 serves as a clamp seat when machining the sealing surface 68 and the internal flat 79 of the second housing part 42.
  • the actuator 10 includes the first housing portion 41, the second housing portion 42 forming the housing space 44 together with the first housing portion 41, the first housing portion 41, and the second housing portion 42. And a fastening member 43 for fastening.
  • the first housing portion 41 has a seal surface 62 in contact with the second housing portion 42, a fastening portion 63 in which a fastening member 43 is screwed, and a rib 74.
  • the fastening portion 63 is formed so as to protrude outward in a direction perpendicular to the sealing surface 62.
  • the rib 74 is located in a range that encircles the first housing portion 41 in a direction perpendicular to the sealing surface 62 and is adjacent to the fastening portion 63. Further, the rib 74 is formed on the opposite side of the sealing surface 62 to the second housing part 42, and has a parallel surface 75 to the sealing surface 62 on the sealing surface 62 side.
  • strength of the fastening part 63 periphery becomes high.
  • the rib 74 within the range which envelopes the first housing portion 41, it is possible to minimize the increase in weight for disposing the rib 74, and to prevent a significant increase in the weight of the actuator 10.
  • the parallel surface 75 of the rib 74 located at a position one step lower than the sealing surface 62 as a clamp seat one-chuck processing and vertical clamping can be performed. Therefore, the seal surface 62 can be processed with high accuracy, and the sealability between the first housing portion 41 and the second housing portion 42 is improved.
  • the seal surface 62 and the flat surface 76 are processed by one chuck, the number of processing steps can be reduced. At the same time, by not reworking the chuck, the processing standard becomes stable, the processing accuracy of the flat surface 76 is improved, and the motor assembling accuracy and the gear assembling accuracy are improved.
  • the first housing portion 41 can be clamped more stably, and the processing accuracy of the seal surface 62 and the flat surface 76 can be improved.
  • the ribs 74 are arranged such that at least one fastening portion 63 exists between the ribs 74 arranged along the outer periphery of the opening 61 of the first housing portion 41.
  • the ribs 74 can be dispersed appropriately, and the range in which the strength of the fastening portion 63 can be increased can be widened.
  • the ribs 74 are arranged such that the same number of fastening portions 63 exist between the ribs 74 aligned along the outer periphery of the opening 61 of the first housing portion 41. As a result, the balance of fastening force becomes even, and the sealability between the first housing portion 41 and the second housing portion 42 is improved. Further, since the first housing portion 41 can be clamped more stably, the processing accuracy of the seal surface 62 and the flat surface 76 is improved.
  • the specific ribs 741 and 742 are arranged to be adjacent to the specific fastening portions 631 and 632 located next to the attachment portion 64.
  • the ribs 741 and 742 are disposed in the vicinity of the mounting hole 66 of the mounting portion 64. Therefore, it is possible to suppress distortion of the fastening portions 631 and 632 due to a load transmitted from the outside through the mounting portion 64, for example, vibration.
  • the parallel surfaces 75 are arranged on the same plane.
  • the first housing portion 41 can be easily clamped at the time of cutting of the seal surface 62 and the like, and the structure of the position regulating jig used when clamping can be simplified.
  • a stable clamp is realized, and the processing accuracy of the seal surface 62 and the flat surface 76 is improved.
  • the first housing portion 81 has three ribs 82.
  • the two ribs 82 differ in arrangement from the ribs 74 of the first embodiment.
  • the rib 82 is provided at a location adjacent to the fastening portion 63
  • the rib 82 is provided within the range which envelopes the first housing portion 81
  • the parallel surface 83 of the rib 82 is formed at a position one step lower than the sealing surface 62
  • the parallel surface 83 is parallel to the sealing surface 62
  • (2-5) of each rib 82 It is the same as that of the first embodiment that the same number of fastening portions 63 exist between each other and (2-6) each parallel surface 83 is disposed on the same plane. Therefore, in the second embodiment, the same effect as that of the first embodiment can be obtained.
  • the first housing portion 91 has three ribs 92.
  • the three ribs 92 are different in arrangement from the ribs 74 of the first embodiment.
  • (3-1) the rib 92 is provided at a location adjacent to the fastening portion 63
  • (3-2) the rib 92 is provided within the range which envelopes the first housing portion 91
  • the parallel surface 93 of the rib 92 is formed at a position one step lower than the sealing surface 62
  • (3-4) the parallel surface 93 is parallel to the sealing surface 62
  • the number of ribs in the first housing part and the second housing part may be two or less, or four or more.
  • the parallel planes of the ribs do not have to be on the same plane. Each parallel surface may be parallel to the sealing surface.
  • the fastening part does not need to be located between two ribs.
  • the fastening member is not limited to the bolt, and may be another fastening member.
  • a part of the motor, the reduction gear and the output shaft may be provided, and others may be further provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)
  • General Details Of Gearings (AREA)
  • Motor Or Generator Frames (AREA)
PCT/JP2018/038691 2017-10-20 2018-10-17 アクチュエータ WO2019078264A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-203409 2017-10-20
JP2017203409A JP7035445B2 (ja) 2017-10-20 2017-10-20 アクチュエータ

Publications (1)

Publication Number Publication Date
WO2019078264A1 true WO2019078264A1 (ja) 2019-04-25

Family

ID=66174381

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/038691 WO2019078264A1 (ja) 2017-10-20 2018-10-17 アクチュエータ

Country Status (2)

Country Link
JP (1) JP7035445B2 (enrdf_load_stackoverflow)
WO (1) WO2019078264A1 (enrdf_load_stackoverflow)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013210074A1 (de) * 2013-04-19 2014-10-23 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Hallstadt Antriebseinrichtung
JP2016156383A (ja) * 2015-02-23 2016-09-01 株式会社ショーワ ハウジング構造および操舵装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013210074A1 (de) * 2013-04-19 2014-10-23 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Hallstadt Antriebseinrichtung
JP2016156383A (ja) * 2015-02-23 2016-09-01 株式会社ショーワ ハウジング構造および操舵装置

Also Published As

Publication number Publication date
JP2019078282A (ja) 2019-05-23
JP7035445B2 (ja) 2022-03-15

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