JP4194083B2 - Baffle plate and transmission - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a transmission that houses a transmission mechanism and has a housing in which oil can be stored, and a baffle plate applied to the transmission.
[0002]
[Prior art]
It has been conventionally known that hydraulic oil used in various hydraulic mechanisms is stored in a housing that houses a transmission mechanism such as a traveling system transmission mechanism operatively connected to a drive source.
Thus, by using the housing also as a hydraulic oil storage space, it is possible to reduce the cost and size of the transmission itself by eliminating or minimizing the storage tank.
[0003]
However, the conventional transmission is insufficient in the following points.
That is, the oil stored in the housing is used as hydraulic oil for various hydraulic mechanisms provided in the vehicle. Therefore, when the housing is also used as a storage tank, it is necessary to store a sufficient amount of oil in the housing so that the hydraulic mechanism does not run out of oil.
On the other hand, the oil stored in the housing becomes a load for the transmission mechanism accommodated in the housing. Therefore, storing a large amount of oil in the housing is not preferable from the viewpoint of transmission efficiency of the transmission mechanism.
[0004]
As described above, it is preferable to store a large amount of oil in the housing from the viewpoint of supplying hydraulic oil to the hydraulic mechanism. On the other hand, from the viewpoint of driving efficiency of the transmission mechanism, the amount of stored oil in the housing is reduced. There is a conflicting desire that it is preferable to minimize.
In this regard, the conventional transmission is not fully considered.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of the prior art, and includes a pair of gears that are rotatably supported by a drive shaft that is operatively connected to a drive source, and an axial direction of the drive shaft. A housing that is located between and includes a transmission mechanism including a hydraulic clutch that selectively transmits the rotation of the drive shaft to one of the pair of gears; An object of the transmission provided is to store a sufficient amount of hydraulic oil in the housing and effectively prevent deterioration of transmission efficiency of the transmission mechanism.
A pair of gears supported rotatably on a drive shaft operatively connected to a drive source and the pair of gears in the axial direction of the drive shaft are positioned between the pair of gears to rotate the drive shaft. A baffle plate that can be applied to a transmission that includes a transmission mechanism including a rotating body having a hydraulic clutch that selectively transmits to one of the gears and that can store hydraulic oil therein, Another object is to provide a baffle plate that can store a sufficient amount of hydraulic oil in the housing and can effectively prevent deterioration of the transmission efficiency of the transmission mechanism.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a pair of gears rotatably supported by a drive shaft operatively connected to a drive source and a position between the pair of gears in the axial direction of the drive shaft. And a transmission mechanism including a rotating body having a hydraulic clutch that selectively transmits rotation of the drive shaft to one of the pair of gears, and a housing having a storage space for storing the transmission mechanism and storing oil. Provided is a baffle plate applied to a transmission equipped with
The baffle plate is mounted in the housing so that the storage space of the housing is liquid-tightly separated into an enclosure space that surrounds at least the lowermost end of the rotating body and a main space other than the enclosure space. , So as to surround at least a part including the lowest end portion of the outer peripheral surface of the rotating body so that the oil in the surrounding space can be transferred to the main space by the pump effect accompanying the rotational movement of the rotating body. A peripheral surface portion is provided along the outer peripheral surface of the rotating body. The peripheral surface portion has an arc shape having a central axis substantially concentric with the rotation axis of the rotating body when viewed along the direction of the rotation axis of the rotating body, and the first surface corresponding to the hydraulic clutch. A peripheral surface portion and a second peripheral surface portion and a third peripheral surface portion respectively corresponding to the pair of gears are included .
[0007]
Preferably, the baffle plate has side portions extending upward from both circumferential ends of the peripheral surface portion, and can be U-shaped when viewed along the rotation axis direction of the rotating body.
[0008]
In a preferred embodiment, a pair of end surface portions extending in the radial direction from both ends in the central axis direction of the peripheral surface portion so as to cover at least a part including the lowest end portion of both end surfaces in the rotation axis direction of the rotating body. Further, it can be provided.
In such a preferable aspect, the surrounding space and the main space are liquid-tightly separated by the peripheral surface portion and the pair of end surface portions.
[0009]
In another preferred embodiment, the apparatus may further include a mounting portion that is mounted on a bearing support plate mounted in the housing.
In such another aspect, the baffle plate separates the surrounding space and the main space in a liquid-tight manner by cooperating with the bearing support plate.
[0010]
In order to achieve the above object, the present invention further includes a pair of gears rotatably supported on a drive shaft operatively connected to a drive source, and the pair of gears in the axial direction of the drive shaft. And a transmission mechanism including a rotating body having a hydraulic clutch that selectively transmits rotation of the drive shaft to one of the pair of gears, and a storage space for storing the transmission mechanism and storing oil. A transmission including a housing and a baffle plate disposed in the housing so as to cover a lowermost end portion of the rotating body is provided.
The baffle plate is configured to liquid-tightly separate the internal space of the housing into an enclosed space in which at least a lowermost end portion of the rotating body is surrounded and a main space other than the enclosed space, and the rotating body On the outer peripheral surface of the rotating body so as to surround at least a part including the lowermost end portion of the outer peripheral surface of the rotating body so that oil in the surrounding space is transferred to the main space by the pump effect accompanying the rotational movement. A peripheral surface portion is provided.
The peripheral surface portion has an arc shape having a central axis substantially concentric with the rotation axis of the rotating body when viewed along the direction of the rotation axis of the rotating body, and the first surface corresponding to the hydraulic clutch. A peripheral surface portion and a second peripheral surface portion and a third peripheral surface portion respectively corresponding to the pair of gears are included .
[0011]
Preferably, the baffle plate has side portions extending upward from both circumferential ends of the peripheral surface portion, and has a U shape when viewed along the rotation axis direction of the rotating body.
[0012]
Preferably, a bearing support plate that is detachably mounted in the housing is further provided so as to support a transmission shaft that constitutes the transmission mechanism.
The baffle plate is detachably supported by the bearing support plate, and the surrounding space is defined by the cooperation of the peripheral surface portion of the baffle plate and the bearing support plate.
[0013]
In another preferable aspect, the baffle plate extends radially from both ends in the central axis direction of the peripheral surface portion so as to cover at least a part including the lowest end portion of both end surfaces in the rotation axis direction of the rotating body. It further includes a pair of extending end surface portions.
In such an aspect, the surrounding space is defined by the peripheral surface portion and the pair of end surface portions.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
Hereinafter, preferred embodiments of a transmission according to the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a schematic transmission diagram of a transmission 1 according to the present embodiment.
[0015]
As shown in FIG. 1, the transmission 1 includes a transmission mechanism including a rotating body operatively connected to a drive source, and a housing 10 that accommodates the transmission mechanism and stores oil therein. ing.
[0016]
Specifically, the transmission 1 includes, as the transmission mechanism, a traveling transmission mechanism that transmits a driving force from a driving source to the driving axle 100, and a PTO transmission mechanism that outputs the driving force from the driving source to the outside. ing.
[0017]
The traveling system transmission mechanism includes a forward / reverse switching hydraulic mechanism 110, a transmission hydraulic mechanism 120 such as HI / LO, a mechanical main transmission mechanism 130, a mechanical auxiliary transmission mechanism 140, and a differential gear mechanism 150. I have.
In the present embodiment, the traveling system transmission mechanism further includes a four-wheel driving force extraction hydraulic mechanism 160.
The four-wheel drive force extraction hydraulic mechanism 160 is used when driving other wheels (not shown) in addition to the drive wheels 100 (rear wheels in the illustrated embodiment) that are always driven. Can be selectively attached to the housing 10.
[0018]
The housing 10 can store oil in at least a part of the internal space.
In the present embodiment, the housing 10 includes a front housing 20, a middle housing 30, and a rear housing 40 connected in series along the longitudinal direction of the vehicle.
The front housing 20, the middle housing 30, and the rear housing 40 are connected to each other so that oil can flow. That is, each of these housings is provided with an opening at an opposing end portion, and oil can freely flow through the opening.
[0019]
More specifically, the front housing 20 is located in a dry chamber 21 that houses a flywheel 200 operatively connected to a drive source, and is located downstream in the transmission direction of the dry chamber 21, and the forward / reverse switching hydraulic mechanism 110. And a first oil chamber 22 that houses the transmission hydraulic mechanism 120.
[0020]
The middle housing 30 includes a second oil chamber 31 that houses the main transmission mechanism, and a third oil chamber 32 that houses the auxiliary transmission mechanism.
The four-wheel driving force extraction hydraulic mechanism 160 is detachably attached to the middle housing 30.
[0021]
The rear housing 40 includes a fourth oil chamber 41 that accommodates the differential gear mechanism 150 and a PTO chamber 42 that accommodates a PTO transmission unit 330 of a PTO transmission mechanism described later.
[0022]
In the present embodiment, the space formed by the first oil chamber 22, the second oil chamber 31, the third oil chamber 32, the fourth oil chamber 41, and the PTO chamber 42 in the internal space of the housing 10. However, it is set as the storage space which can store hydraulic fluid.
[0023]
The PTO transmission mechanism is disposed between a PTO transmission shaft 310 operatively connected to a drive source, a PTO output shaft 320 that outputs power to the outside, and the PTO transmission shaft 310 and the PTO output shaft 320. And a PTO transmission unit 330.
[0024]
One end of the PTO transmission shaft 310 is operatively connected to the drive source in the front housing 20, and the other end penetrates the front housing 20 and the middle housing 30, and the rear housing 40. The PTO chamber 42 is reached.
In the present embodiment, a part of the transmission shaft in the traveling transmission mechanism is a hollow shaft, and the PTO transmission shaft 310 is inserted through the hollow shaft to reduce the size of the transmission itself.
[0025]
The PTO output shaft 320 is supported by the housing 10 such that one end extends into the PTO chamber 42 and the other end extends outward from the housing 10.
[0026]
The PTO transmission unit 330 operatively connects the PTO transmission shaft 310 and the PTO output shaft 320 in the PTO chamber 42.
Preferably, the PTO transmission unit 330 may include a PTO clutch 335 that turns on / off power transmission from the PTO transmission shaft 310 to the PTO output shaft 320.
More preferably, the PTO transmission unit 330 may include a PTO brake (not shown) that operatively applies a braking force to the PTO output shaft 320 in conjunction with the OFF operation of the PTO clutch 335.
[0027]
In addition to such a configuration, the transmission 1 according to the present embodiment further covers at least the lowermost end portion of the rotating body located below the oil level OL of the storage space among the rotating bodies in the transmission mechanism. A baffle plate 50 is provided.
[0028]
As shown in FIG. 1, in the present embodiment, the transmission hydraulic mechanism 120, the mechanical main transmission mechanism 130, the mechanical auxiliary transmission mechanism 140, and the four-wheel drive force extraction hydraulic mechanism 160 are provided in the housing. 10 is disposed below.
The baffle plate 50 is configured to cover a region including the lowermost end portion of the transmission hydraulic mechanism 120.
[0029]
FIG. 2 shows an enlarged schematic view of a portion II in FIG. FIG. 3 shows a perspective view of the baffle plate 50.
As shown in FIG. 3, the baffle plate 50 covers the lowermost end portion of the rotating body when viewed along the rotation axis direction of the corresponding rotating body (the hydraulic transmission mechanism 120 in the illustrated embodiment). In addition, it has a U-shape that opens upward, and is configured to be able to isolate the rotating body from the stored oil.
[0030]
Specifically, as shown in FIGS. 1 and 2, the transmission hydraulic mechanism 120 includes a drive shaft 121 operatively connected to the drive source, and a high-speed drive supported on the drive shaft 121 so as to be relatively rotatable. A side gear 122H and a low-speed drive side gear 122L, a HI / LO clutch 123 that selectively connects the drive shaft 121 to one of the gears 122H and 122L, and a drive shaft 121 are arranged in parallel. The driven shaft 124, the high-speed driving gear 122H, and the low-speed driving gear 122L are engaged with the driven shaft 124 so as not to rotate relative to the driven shaft 124, and the high-speed driven gear 125H and the low-speed driven gear are supported. Side gear 125L.
Each component of the transmission hydraulic mechanism 120 forms a rotating body that rotates around its respective rotation axis.
[0031]
The baffle plate 50 is a rotary body (a high-speed drive gear 122H, an HI / LO clutch 123, and a driven gear 122L in the illustrated embodiment) positioned below among various rotary bodies in the transmission hydraulic mechanism 120. The peripheral surface part 51 which covers a lowermost end part is provided.
[0032]
In the present embodiment, the peripheral surface portion 51 includes first to third peripheral surface portions 51a, 51b, 51B, corresponding to the high-speed drive gear 122H, the HI / LO clutch 123, and the low-speed drive gear 122L, respectively. 51c is integrally provided.
[0033]
FIG. 4 is a schematic cross-sectional view taken along line IV-IV in FIG.
As shown in FIGS. 3 and 4, the first peripheral surface portion 51a surrounds at least a portion including the lowermost end portion of the outer peripheral surface of the high speed driving side gear 122H, and the high speed driving side gear 122H. When viewed in the direction of the rotation axis, the arcuate shape has a central axis substantially concentric with the rotation axis of the high-speed drive gear 122H.
Similarly, the second peripheral surface portion 51b and the third peripheral surface portion 51c have arc shapes corresponding to the HI / LO clutch 123 and the low speed drive side gear 122L, respectively.
[0034]
That is, the first circumferential surface portion 51a is substantially the same in the first radial gap S1 between the first circumferential surface portion 51a and the outer circumferential surface of the high-speed driving gear 122H over the entire circumferential direction of the first circumferential surface portion 51a. (See FIG. 4).
Similarly, the second peripheral surface portion 51b and the third peripheral surface portion 51c have second and third radial gaps between the corresponding HI / LO clutch 123 and the outer peripheral surface of the low speed drive side gear 122L. It is substantially the same over the entire circumferential direction.
[0035]
By providing the peripheral surface portion 51 having such a configuration, the oil existing between the peripheral surface portion 51 and the outer peripheral surface of the corresponding rotating body is subjected to a pumping action accompanying the rotational motion of the rotating body.
The first to third radial gaps can be appropriately set as long as the pumping effect by the surrounding rotating body is exhibited, but is preferably 3 mm or less, more preferably 2 mm or less.
[0036]
5 and 6 are schematic cross-sectional views taken along lines VV and VI-VI in FIG. 2, respectively.
As shown in FIGS. 2 and 3 to 5, the baffle plate 50 includes a pair of first and second end surface portions 53 and 54 that extend radially inward from both ends of the peripheral surface portion 50 in the central axis direction. It has.
The pair of first and second end surface portions 53 and 54 act as attachment portions for the baffle plate 50.
[0037]
Here, a method of attaching the baffle plate 50 will be described.
The transmission 1 includes the first and second bearing support plates 210 and 220 that support a transmission shaft in the transmission mechanism.
The first bearing support plate 210 is a first flange portion 20a provided in the front housing 20, and the first flange portion 20a extending radially inward from the inner peripheral surface of the front housing 20 It is attached detachably.
On the other hand, the second bearing support plate 220 is a second flange portion 20b provided in the front housing 20, and extends radially inward from the inner peripheral surface of the downstream end portion in the transmission direction of the front housing 20. The second flange portion 20b is detachably attached.
[0038]
The first end surface portion 53 and the second end surface portion 54 of the baffle plate 50 are liquid-tightly connected to the first and second bearing support plates 210 and 220, respectively.
That is, both end surfaces in the central axis direction of the baffle plate 50 are liquid-tightly closed by the first and second bearing support plates 210 and 220, respectively.
[0039]
Preferably, the first end surface portion 53 is provided with an extending portion 53a extending outward in the radial direction, and the first end surface portion 53 and the first bearing support plate are provided through an attachment hole formed in the extending portion 53a. 210 and the first flange portion 20a can be fastened together.
In addition, the second end surface portion 54 may be screwed to the second bearing support plate 220.
[0040]
As described above, in the transmission 1 according to the present embodiment, the baffle plate 50, the first bearing support plate 210, and the second bearing support plate 220 allow the corresponding rotating body in the transmission hydraulic mechanism to be stored in the storage space. It is designed to be liquid-tightly separated from other spaces.
That is, the baffle plate 50 is configured so that, in cooperation with the first and second bearing support plates 210 and 220, the storage space in the housing 10 is separated from the surrounding space 11 surrounding the corresponding rotating body and the surrounding space 11. The main space 12 is separated.
[0041]
Such a transmission 1 can obtain the following effects.
That is, the corresponding rotating body (in this embodiment, the high speed drive side gear 122H, the HI / LO clutch 123, and the low speed drive side gear 122L) is separated from the main space 12 in a liquid-tight manner. Therefore, the oil stored in the main space 12 does not become a rotational resistance with respect to the rotating body.
Furthermore, the stored oil in the surrounding space 11 is scraped out to the main space 12 by the pump effect accompanying the rotational movement of the rotating body.
Accordingly, it is possible to effectively prevent deterioration of the transmission efficiency of the rotating body due to the stored oil while storing a sufficient amount of oil in the main space 12 to prevent oil shortage with respect to the hydraulic mechanism.
[0042]
Further, in the present embodiment, since the baffle plate 50 is supported by the first and second bearing support plates 210 and 220, the first and second bearing support plates 210 and 220 and the speed change hydraulic pressure are supported. After the mechanism 120 and the baffle plate 50 are assembled outside the housing, the assembly can be installed in the housing 10.
Therefore, the assembly work of the baffle plate can be facilitated.
[0043]
Preferably, the baffle plate 50 may include side portions 52 extending upward from both upper end portions of the peripheral surface portion 51 (see FIGS. 3 and 4). The side surface portion 52 is substantially the same as the upper end position of the rotating body surrounding the upper end position.
By providing such a side surface portion 52, it is possible to effectively allow the stored oil to flow from the main space 12 to the surrounding space 11 without hindering the pumping of oil from the surrounding space 11 to the main space 12 due to the pumping effect of the rotating body. Can be prevented.
[0044]
In the present embodiment, the side surface portion 52 includes first to third side surface portions 52a to 52a corresponding to the high speed driving side gear 122H, the HI / LO clutch 123, and the low speed driving side gear 122L, respectively. 52c is integrally provided.
The upper end portion of the first side surface portion 52a is substantially the same as the upper end position of the high speed drive gear 122H.
Similarly, the upper end portions of the second and third side surface portions 52b and 52c are substantially the same as the upper end positions of the HI / LO clutch 123 and the low speed drive side gear 122L, respectively.
[0045]
Further, in the present embodiment is configured so as demarcating the enclosed space 11 by cooperation with the baffle plate 50 and the first and second base dovetail ring support plate 210 and 220, instead of this The surrounding space 11 can be defined only by the baffle plate 50.
That is, the first end surface portion 53 and the second end surface portion 53 can be configured to close the one end side opening and the other end side opening in the central axis direction of the peripheral surface portion 51, respectively.
[0046]
Further, in the present embodiment, the side surface portion 52 is configured to be substantially the same as the upper end position of the rotating body surrounding the upper end position, but instead, the side surface portion 52 of the rotating body surrounding the side surface portion 52 is configured. It is possible to extend upward from the upper end position (see FIG. 7).
In such an aspect, the communication hole 55 is provided on the downstream side in the rotating body rotation direction of the peripheral surface portion 51 or the side surface portion 52 with reference to the lowest end position of the peripheral surface portion 51, and the surrounding space is provided via the communication hole 55. The oil can be transferred from 11 to the main space 12.
[0047]
In the present embodiment, the baffle plate 50 is connected to the first and second bearing support plates 50 via the end face portions 53 and 54. However, the baffle plate 50 is naturally connected by various methods. The first and second bearing support plates 210 and 220 may be connected to each other.
For example, an attachment portion can be provided on the peripheral surface portion 51 and attached to the bearing support plate via the attachment portion.
[0048]
Embodiment 2. FIG.
Hereinafter, another embodiment of the transmission according to the present invention will be described with reference to the accompanying drawings.
In the first embodiment, the case where the transmission 1 includes the baffle plate 50 configured to surround the transmission hydraulic mechanism 120 has been described as an example, but, of course, instead of or in addition to the baffle plate 50. In addition, a baffle plate configured to surround another rotating body in the transmission mechanism can be provided.
[0049]
FIG. 8 is a perspective view of the baffle plate 50 ′.
The baffle plate 50 ′ is substantially the same as the baffle plate 50 in the first embodiment except that the baffle plate 50 ′ is configured to surround the entire main transmission mechanism 130. The baffle plate 50 ′ is connected to the second bearing support plate 220 and the inner wall 30 a of the middle housing 30.
In such a configuration, the main transmission mechanism 130, the baffle plate 50 ′, and the second bearing support plate 220 are assembled outside the housing, and then the assembly can be installed in the middle housing 30.
[0050]
9A and 9B show a schematic vertical side view and a schematic vertical front view of the baffle plate 50 ″.
The baffle plate 50 ″ is configured to surround the sliding gear in the main transmission mechanism 130.
Specifically, the main transmission mechanism 130 includes a driven shaft 131 and a plurality of driven fixed gears operatively connected to a driving source, and a plurality of driven fixed gears (relatively supported by the driven shaft). In the form shown in FIG. 1, a driven fixed gear 132a to 132d) and a sliding gear (not shown) supported on the driven shaft 131 so as to be slidable and relatively non-rotatable so as to mesh with any of the plurality of driven fixed gears. 1 includes a sliding gear 133a to 133b) and a shift fork 134 (see FIG. 9) for operating the sliding gear.
[0051]
The baffle plate 50 ″ is connected to the shift fork 134 so as to surround the corresponding sliding gear 133.
In this way, by connecting the baffle plate 50 ″ to the shift fork 134 that operates the sliding gear 133, the gap between the baffle plate 50 ″ and the sliding sliding gear 133 is made as close as possible. Thus, the pumping effect by the sliding gear 133 can be obtained efficiently.
[0052]
Further, FIG. 10 shows a schematic longitudinal sectional view of the baffle plate 50 ′ ″.
The baffle plate 50 ′ ″ is configured to individually surround the high speed drive side gear 122H and the low speed drive side gear 122L in the transmission hydraulic mechanism 120.
The baffle plate 50 ′ ″ can be connected to the first bearing support plate 210 or the second bearing support plate 220, for example.
[0053]
【The invention's effect】
As described above, according to the baffle plate and the transmission according to the present invention, a sufficient amount of oil is stored in the housing, and the drive shaft is operatively connected to the drive source due to the stored oil. A pair of gears rotatably supported and a hydraulic clutch located between the pair of gears in the axial direction of the drive shaft and selectively transmitting rotation of the drive shaft to one of the pair of gears; possible to effectively prevent the transmission efficiency of the transmission mechanism including a rotating member is deteriorated.
[Brief description of the drawings]
FIG. 1 is a transmission schematic diagram of a transmission according to an embodiment of the present invention.
FIG. 2 is an enlarged schematic view of a II part in FIG.
FIG. 3 is a perspective view of a baffle plate used in the transmission shown in FIG. 1;
FIG. 4 is a schematic cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a schematic cross-sectional view taken along line VV in FIG.
6 is a schematic cross-sectional view taken along line VI-VI in FIG.
FIG. 7 is a schematic cross-sectional view showing a modification of the baffle plate shown in FIGS. 1 to 6, and is a schematic cross-sectional view corresponding to FIG.
FIG. 8 is a perspective view of a baffle plate according to another embodiment.
FIGS. 9A and 9B are a schematic longitudinal side view and a schematic longitudinal front view of a baffle plate according to still another embodiment, respectively.
FIG. 10 is a schematic longitudinal sectional view of a baffle plate according to still another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Transmission 10 Housing 11 Storage space 12 Main space 50 Baffle plate 51 Peripheral surface part 52 Side surface part 53,54 End surface part 55 Communication hole 210,220 Bearing support plate

Claims (8)

A pair of gears that are rotatably supported by a drive shaft that is operatively connected to a drive source and the pair of gears with respect to the axial direction of the drive shaft are positioned between the pair of gears to rotate the drive shaft. A baffle plate applied to a transmission including a transmission mechanism including a rotating body having a hydraulic clutch that selectively transmits to one side, and a housing having a storage space for storing the transmission mechanism and storing oil. And
The storage space of the housing is mounted in the housing so as to be liquid-tightly separated into a surrounding space surrounding at least the lowermost end of the rotating body and a main space other than the surrounding space,
The rotating body surrounds at least a part including the lowermost end portion of the outer peripheral surface of the rotating body so that the oil in the surrounding space can be transferred to the main space by the pump effect accompanying the rotating motion of the rotating body. With a peripheral surface along the outer peripheral surface of the body,
The peripheral surface portion has an arc shape having a central axis substantially concentric with the rotation axis of the rotating body when viewed along the direction of the rotation axis of the rotating body, and the first surface corresponding to the hydraulic clutch. A baffle plate comprising a peripheral surface portion and a second peripheral surface portion and a third peripheral surface portion respectively corresponding to the pair of gears .   The said peripheral surface part has a side part extended upward from the circumferential direction both ends, and when it sees along the rotating shaft direction of the said rotary body, it has comprised the U shape. Baffle plate. A mounting portion attached to a bearing support plate mounted in the housing;
The bearing by the support plate and co働下, baffle plate according to claim 1 or 2 and the surrounding space and the main space, characterized in that it is separated into a liquid-tight. A pair of end surface portions extending in the radial direction from both end portions in the central axis direction of the peripheral surface portion so as to cover at least a part including the lowest end portion of both end surfaces in the rotation axis direction of the rotating body;
The baffle plate according to any one of claims 1 to 3, wherein the surrounding space and the main space are liquid-tightly separated by the peripheral surface portion and the pair of end surface portions. A pair of gears that are rotatably supported by a drive shaft that is operatively connected to a drive source and the pair of gears with respect to the axial direction of the drive shaft are positioned between the pair of gears to rotate the drive shaft. A transmission mechanism including a rotating body having a hydraulic clutch that selectively transmits to one side ;
A housing having a storage space for storing the transmission mechanism and storing oil;
A baffle plate disposed in the housing so as to cover the lowermost end of the rotating body,
The baffle plate is configured to liquid-tightly separate the storage space of the housing into an enclosed space in which at least a lowermost end portion of the rotating body is surrounded and a main space other than the enclosed space, and the rotating body On the outer peripheral surface of the rotating body so as to surround at least a part including the lowermost end portion of the outer peripheral surface of the rotating body so that oil in the surrounding space is transferred to the main space by the pump effect accompanying the rotational movement. With a circumferential surface along
The peripheral surface portion has an arc shape having a central axis substantially concentric with the rotation axis of the rotating body when viewed along the direction of the rotation axis of the rotating body, and the first surface corresponding to the hydraulic clutch. A transmission comprising a peripheral surface portion and a second peripheral surface portion and a third peripheral surface portion respectively corresponding to the pair of gears . The said baffle plate has a side part extended upward from the circumferential direction both ends of the said surrounding surface part, and has comprised the U shape when it sees along the rotating shaft direction of the said rotary body. Item 6. The transmission according to Item 5 . A bearing support plate detachably mounted in the housing so as to support a transmission shaft constituting the transmission mechanism;
The baffle plate is detachably supported by the bearing support plate,
The transmission according to claim 5 or 6 , wherein the surrounding space is defined by the cooperation of a peripheral surface portion of the baffle plate and the bearing support plate. The baffle plate further includes a pair of end surface portions extending in the radial direction from both ends in the central axis direction of the peripheral surface portion so as to cover at least a part including a lowermost end portion of both end surfaces in the rotation axis direction of the rotating body. Prepared,
The transmission according to any one of claims 5 to 7 , wherein the surrounding space is defined by the peripheral surface portion and the pair of end surface portions.

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