WO2020174777A1 - 変速機ケース - Google Patents
変速機ケース Download PDFInfo
- Publication number
- WO2020174777A1 WO2020174777A1 PCT/JP2019/045416 JP2019045416W WO2020174777A1 WO 2020174777 A1 WO2020174777 A1 WO 2020174777A1 JP 2019045416 W JP2019045416 W JP 2019045416W WO 2020174777 A1 WO2020174777 A1 WO 2020174777A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- transmission case
- water
- step portion
- outer peripheral
- peripheral surface
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
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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
-
- 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
- F16H57/035—Gearboxes for gearing with endless flexible members
-
- 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
- F16H57/032—Gearboxes; Mounting gearing therein characterised by the materials used
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- 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
- F16H2057/02039—Gearboxes for particular applications
- F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
- F16H2057/02047—Automatic transmissions
Definitions
- the present invention relates to a transmission case.
- Some electric components such as the transmission controller are arranged above the transmission case that houses the transmission mechanism.
- the electrical component is electrically connected to the transmission mechanism via a connection portion provided on the upper surface of the transmission case (for example, Patent Document 1).
- rainwater there are a plurality of ribs on the upper surface of the transmission case, and water (for example, rainwater) may collect between the ribs. Since rainwater contains impurities (for example, salt), when the collected rainwater is dried, salt is deposited. If salt precipitation occurs around the connection of the transmission case, the salt corrodes the connection. As a result, there is a risk that the electrical components will malfunction. Therefore, it is required to quickly drain the water on the transmission case.
- impurities for example, salt
- the present invention is The transmission case is configured so that the outer surface has a pattern that exhibits a water repellent effect.
- the water on the transmission case can be quickly drained.
- FIG. 1 is a diagram for explaining the transmission case 2, and is a perspective view of the transmission case 2 viewed from the converter housing side.
- FIG. 2 is a view of the transmission case 2 viewed from the side cover side.
- the actuator 50 and the manual shaft 4 are shown by imaginary lines, and the state where the actuator 50 is separated from the manual shaft 4 is shown.
- a converter housing (not shown) is attached to the transmission case 2 from one side (front side in FIG. 1) sandwiching the transmission case 2, and the other side (in FIG. 1).
- a side cover (not shown) is attached from the back side of the paper.
- the transmission case 2 has an intermediate wall 20 in the internal space.
- the intermediate wall 20 is orthogonal to the stacking direction of the converter housing and the side cover.
- the interior space of the transmission case 2 includes a space S1 on the side cover side (back side in FIG. 1, see FIG. 2), a space S2 on the converter housing side (front side in FIG. 1) by the intermediate wall 20. It is divided into
- a peripheral wall portion 21 that surrounds the peripheral edge of the intermediate wall 20 is provided on the intermediate wall 20.
- the peripheral wall portion 21 is provided across the space S1 on the side cover side and the space S2 on the converter housing side.
- a flange portion 23 is formed at an end portion of the peripheral wall portion 21 on the converter housing side.
- the flange portion 23 is formed over the entire circumference of the outer peripheral surface 210 of the peripheral wall portion 21.
- a flange portion 22 is formed at the end of the peripheral wall portion 21 on the side cover side.
- the flange portion 22 is formed over the entire circumference of the outer peripheral surface 210 of the peripheral wall portion 21.
- a space S1 on the side cover side of the transmission case 2 accommodates a variator (not shown) and a parking mechanism (not shown).
- Through holes 20a and 20b are formed in the intermediate wall 20 of the transmission case 2.
- the space S1 on the side cover side and the space S2 on the converter housing side communicate with each other through these through holes 20a and 20b.
- the manual shaft 4 of the parking mechanism is arranged on the front side of the vehicle in the space S1 with reference to the installation state of the continuously variable transmission 1.
- the manual shaft 4 is arranged such that the rotation axis Y of the manual shaft 4 is orthogonal to the center lines X1 and X2 of the through holes 20a and 20b.
- one end 41 of the manual shaft 4 projects from the upper surface (hereinafter, referred to as the upper surface 210a) of the outer peripheral surface 210 of the transmission case 2 in the vertical line VL direction (see FIG. 3).
- An actuator 50 described later is connected to one end 41 of the manual shaft 4.
- FIG. 3 is a diagram illustrating the transmission case 2.
- (A) is the figure which looked at the A area
- 2B is a view of the transmission case 2 in FIG. 2 viewed from the AA direction.
- FIG. 4 is a diagram for explaining the transmission case 2, and is a diagram schematically showing an AA cross section in FIG. 3B.
- the manual shaft 4 and the actuator 50 are illustrated in phantom lines, and the actuator 50 is illustrated apart from the manual shaft 4.
- FIG. 5 is a schematic diagram illustrating the transmission case 2, and is a view of the cross section taken from the plane A of the transmission case 2 in FIG. 3A and viewed from the vehicle rear side.
- the continuously variable transmission 1 includes a shift-by-wire system 5.
- the manual shaft 4 is rotated by the actuator 50.
- the actuator 50 is connected to one end portion 41 of the manual shaft 4 protruding from the upper surface 210 a of the transmission case 2.
- the actuator 50 includes a motor M inside a housing 51.
- the housing 51 is provided with a cylindrical portion 52 extending from the housing 51.
- a cylindrical fitting portion 53 extending from the motor M is accommodated in the cylindrical portion 52.
- the inner periphery 53a of the fitting portion 53 is spline-engaged with the one end portion 41 of the manual shaft 4 described above.
- the cylindrical portion 52 is connected to the connecting portion 25 of the transmission case 2 described later.
- the housing 51 of the actuator 50 is provided with a connection terminal 54 to which a wire harness (not shown) is connected.
- the motor M is electrically connected to a shift lever (shift switch) not shown via a wire harness connected to the connection terminal 54.
- the actuator 50 rotates the manual shaft 4 around the rotation axis Y according to the selection range of a shift lever (shift switch) not shown.
- the manual shaft 4 is arranged such that the rotation axis Y is inclined toward the vehicle rear side by about 11° with respect to the vertical line VL direction.
- the upper surface 210a of the transmission case 2 is lowered from the upper surface 210a in the vertical line VL direction.
- a first step portion 210b and a second step portion 210c that are offset stepwise are formed on the side.
- the first step portion 210b is lower than the upper surface 210a.
- the second step portion 210c is lower than the first step portion 210b.
- the front side of each of the first step portion 210b and the second step portion 210c is inclined downward in the vertical line VL direction.
- the second step portion 210c is provided with the connecting portion 25 that is connected to the cylindrical portion 52 of the actuator 50 described above.
- the connecting portion 25 has a bottomed tubular shape including a bottom wall 251 and a peripheral wall portion 252 surrounding the periphery of the bottom wall 251.
- a through hole 250 is formed at approximately the center of the bottom wall 251.
- the through hole 250 connects the outside of the transmission case 2 to the space S1 on the side cover side of the transmission case 2.
- the central axis of the peripheral wall portion 252 and the central axis of the through hole 250 coincide with the rotation axis Y of the manual shaft 4 described above.
- the manual shaft 4 passes through the through hole 250.
- One end 41 of the manual shaft 4 projects from the second step 210c (see phantom line). In this state, the one end portion 41 of the manual shaft 4 is spline-engaged with the inner circumference 53a of the fitting portion 53 of the actuator 50.
- the end surface 52a of the cylindrical portion 52 of the actuator 50 and the end surface 252a of the peripheral wall portion 252 of the connecting portion 25 are in contact with each other over the entire circumference in the circumferential direction around the rotation axis Y.
- the actuator 50 is arranged so as to cover the upper side of the first step portion 210b and the second step portion 210c.
- the transmission case 2 is provided with the side wall portion 24 on the opposite side (downstream side) to the first step portion 210b of the second step portion 210c sandwiching the connecting portion 25 in the vehicle front-rear direction.
- the side wall portion 24 crosses the peripheral wall portion 21 in a direction orthogonal to the vehicle front-rear direction, and connects the side cover side flange portion 22 and the converter housing side flange portion 23 described above. ..
- a bulging wall 213 bulging upward from the second step 210c is bulged on the side cover side (left side in the figure) of the second step 210c. ing.
- a bulging wall 214 bulging upward from the second step portion 210c bulges on the converter housing side (right side in the figure) of the second step portion 210c.
- the bulging wall 213 is provided across the side wall portion 24 and the side cover side flange portion 22.
- the bulging wall 214 is provided across the side wall portion 24 and the flange portion 23 on the converter housing side.
- the bulging walls 213 and 214 bulge toward each other toward the vehicle front side, and incline so that the bulging height bulging upward from the second step portion 210c decreases toward each other. ing.
- a through hole 240 is formed between the bulging walls 213 and 214 in the side wall portion 24.
- the through hole 240 is located on the most downstream side of the water channel R formed in the valley between the bulging wall 213 and the bulging wall 214 in the second step portion 210c.
- the through hole 240 connects the water channel R and the outside of the transmission case 2.
- the through hole 240 is set to have a hole diameter capable of discharging a water droplet W described later.
- FIG. 6 is a diagram for explaining the water repellent effect.
- A is a figure explaining the state where the water droplet W adhered on the transmission case 2.
- B is a figure which shows typically the cross section which cut
- FIG. 6C is a diagram illustrating a state in which the surface of the transmission case 2 is not flat and has a flat surface. The hatching of the water droplet W is omitted for the sake of clarity.
- the transmission case 2 is splashed with rainwater that has propagated through the engine room (not shown).
- the rainwater forms water droplets W on the transmission case 2 (see (a) of FIG. 6).
- the transmission case 2 has a satin pattern on the first step 210b and the second step 210c.
- the satin-like pattern is formed by providing a plurality of recesses 215 on the surfaces of the first step 210b and the second step 210c.
- the surfaces of the first step portion 210b and the second step portion 210c have a concavo-convex shape in a sectional view (see (b) of FIG. 6).
- the width ⁇ L of the recess 215 is set to, for example, 5 to 15 ⁇ m.
- the interval ⁇ T between the adjacent concave portions 215 is set to, for example, 20 to 30 ⁇ m. Then, the water droplet W does not enter the recess 215.
- a layer of air Air is formed between the recess 215 and the interface Wb of the water droplet W. At the interface Wb of the water droplet W, the contact with the first step portion 210b or the second step portion 210c and the contact with the air Air in the recess 215 are alternately repeated (in a Cassie-Baxter state).
- the angle ⁇ formed by the interface Wb and the surface Wa in the water droplet W (the angle formed by the straight line Lp and the straight line Lq; also referred to as the contact angle ⁇ ) is 90 degrees or more (see (b) in FIG. 6). ).
- the contact angle ⁇ is 90 degrees or more, the Lotus effect is exerted, and the wettability of the water droplet W becomes low (the water repellency is high).
- the water droplet W on the first step portion 210b or the second step portion 210c flows so as to roll toward the downstream side due to its own weight (see the arrow in (a) of FIG. 6). Then, the water droplet W flows through the water passage R and then is drained from the through hole 240 to the outside of the transmission case 2.
- the concave portion 215 is provided in the first step portion 210b and the second step portion 210c is illustrated, but the present invention is not limited to this.
- the recess 215 may be provided over the entire circumference of the outer peripheral surface 210 of the case 2.
- the first step portion 210b and the second step portion 210c have a general flat surface in which the recess 215 is not formed, at the interface Wb of the water droplet W, There is no contact with the Air, and the entire surface is in contact with the first step 210b or the second step 210c. Then, the angle formed by the interface Wb and the surface Wa (contact angle ⁇ ) becomes 0° or more and less than 90°. In this case, the Lotus effect is not exhibited, and the wettability of the water droplet W becomes high (the water repellency is low).
- water droplets W will not flow easily.
- the water droplet W is dried as it is on the first step portion 210b or the second step portion 210c, and becomes in a state where salt is likely to precipitate.
- the transmission case 2 has the following configuration.
- the outer peripheral surface 210 is provided with a plurality of recesses 215 (patterns exhibiting a water repellent effect).
- the transmission case 2 has the following configuration.
- the second step 210c of the outer peripheral surface 210 is provided with the connecting portion 25 for connecting to the actuator 50 (outside).
- the concave portion 215 is locally provided in the first step portion 210b and the second step portion 210c (around the connecting portion 25).
- the transmission case 2 has the following configuration.
- a water channel R is provided in the second step portion 210c.
- a through hole 240 drainage section that connects the water channel R and the outside of the transmission case 2 is provided.
- the present invention is not limited to the above-described embodiments, but includes various modifications and improvements that can be made within the scope of the technical idea thereof.
- the outer surface of the side cover or the outer surface of the converter housing may be provided with a pattern exhibiting a water-repellent effect.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
そこで、変速機ケース上の水を速やかに排水することが求められている。
外周面に撥水効果を発揮する模様が付されている構成の変速機ケースとした。
図1は、変速機ケース2を説明する図であり、変速機ケース2をコンバータハウジング側から見た斜視図である。
図2は、変速機ケース2をサイドカバー側から見た図である。図2では、アクチュエータ50とマニュアルシャフト4を仮想線で示すと共に、アクチュエータ50をマニュアルシャフト4から離間させた状態を記載している。
無段変速機1では、変速機ケース2のコンバータハウジング側の空間S2には、前後進切替機構(図示せず)と、ファイナルギア(図示せず)と、が収容されている。
図4は、変速機ケース2を説明する図であり、図3の(b)におけるA-A断面を模式的に示す図である。説明の便宜上、マニュアルシャフト4とアクチュエータ50を仮想線で記載してあると共に、アクチュエータ50をマニュアルシャフト4から離間して記載している。
図5は、変速機ケース2を説明する模式図であり、図3の(a)における変速機ケース2の面Aで切断して、その断面を車両後方側から見た図である。
アクチュエータ50は、筐体51の内部にモータMを備えている。筐体51には、当該筐体51から延びる円筒部52が設けられている。円筒部52内には、モータMから延びる円筒状の嵌合部53が収容されている。嵌合部53の内周53aは、前記したマニュアルシャフト4の一端部41にスプライン係合する。円筒部52は、後記する変速機ケース2の接続部25と接続する。
この状態において、マニュアルシャフト4の一端部41は、アクチュエータ50の嵌合部53の内周53aとスプライン係合する。
膨出壁213は、側壁部24とサイドカバー側のフランジ部22とに跨って設けられている。膨出壁214は、側壁部24とコンバータハウジング側のフランジ部23に跨って設けられている。
貫通孔240は、第2段部210cにおける膨出壁213と膨出壁214との谷間に形成される水路Rの最下流に位置している。貫通孔240は、水路Rと変速機ケース2の外部とを連絡している。この貫通孔240は、後記する水滴Wを排出可能な孔径に設定されている。
撥水効果について説明する。
図6は、撥水効果を説明する図である。(a)は、変速機ケース2上に水滴Wが付着した状態を説明する図である。(b)は、(a)における変速機ケース2を、面Aで切断した切断面を模式的に示す図である。(c)は、変速機ケース2の表面に凹凸を形成せず、平坦面とした状態を説明する図である。なお、見やすくするために水滴Wのハッチングは省略してある。
そうすると、界面Wbと表面Waの成す角(接触角φ)は、0度以上90度未満となる。この場合、ロータス効果は発揮されず、水滴Wの濡れ性が高くなる(撥水性が低い)。
(1)外周面210に複数の凹部215(撥水効果を発揮する模様)が付されている。
(2)外周面210の第2段部210cには、アクチュエータ50(外部)との接続部25が設けられている。
凹部215は、第1段部210bと第2段部210c(接続部25周り)に局所的に設けられている。
(3)第2段部210cには水路Rが設けられている。
水路Rの下流側には、当該水路Rと変速機ケース2の外部とを連絡する貫通孔240(排水部)が設けられている。
Claims (4)
- 外周面に撥水効果を発揮する模様が付されている、変速機ケース。
- 前記外周面には、外部との接続部が設けられており、
前記撥水効果を発揮する模様は、前記接続部周りに局所的に設けられている、請求項1に記載の変速機ケース。 - 前記外周面には水路が設けられており、前記水路の下流側には排水部が設けられている、請求項2に記載の変速機ケース。
- 前記排水部は、前記水路と前記変速機ケースの外部とを連絡する貫通孔である、請求項3に記載の変速機ケース。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/428,390 US11725720B2 (en) | 2019-02-26 | 2019-11-20 | Transmission case |
| CN201980093136.2A CN113490806B (zh) | 2019-02-26 | 2019-11-20 | 变速器壳体 |
| JP2021501573A JP7130349B2 (ja) | 2019-02-26 | 2019-11-20 | 変速機ケース |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019032419 | 2019-02-26 | ||
| JP2019-032419 | 2019-02-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020174777A1 true WO2020174777A1 (ja) | 2020-09-03 |
Family
ID=72238908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2019/045416 Ceased WO2020174777A1 (ja) | 2019-02-26 | 2019-11-20 | 変速機ケース |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US11725720B2 (ja) |
| JP (1) | JP7130349B2 (ja) |
| CN (1) | CN113490806B (ja) |
| WO (1) | WO2020174777A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2019229848A1 (ja) * | 2018-05-29 | 2021-04-22 | 株式会社ユニバンス | 動力伝達装置の潤滑構造 |
| US11725720B2 (en) * | 2019-02-26 | 2023-08-15 | Jatco Ltd | Transmission case |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7580882B2 (ja) * | 2020-08-24 | 2024-11-12 | ジヤトコ株式会社 | 減速機ケース |
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- 2019-11-20 WO PCT/JP2019/045416 patent/WO2020174777A1/ja not_active Ceased
- 2019-11-20 CN CN201980093136.2A patent/CN113490806B/zh active Active
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| JPWO2019229848A1 (ja) * | 2018-05-29 | 2021-04-22 | 株式会社ユニバンス | 動力伝達装置の潤滑構造 |
| JP7219274B2 (ja) | 2018-05-29 | 2023-02-07 | 株式会社ユニバンス | 動力伝達装置の潤滑構造 |
| US11725720B2 (en) * | 2019-02-26 | 2023-08-15 | Jatco Ltd | Transmission case |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113490806B (zh) | 2025-09-12 |
| US20220136596A1 (en) | 2022-05-05 |
| JPWO2020174777A1 (ja) | 2021-10-28 |
| CN113490806A (zh) | 2021-10-08 |
| JP7130349B2 (ja) | 2022-09-05 |
| US11725720B2 (en) | 2023-08-15 |
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