JP2021014891A - Oil separator and lubrication device for power transmission device - Google Patents

Abstract

To provide an oil separator that can regulate agitation resistance of a gear in accordance with internal temperature of a case of a power transmission device.SOLUTION: An oil separator 20 includes: a separator body for storing at least part of a gear 121 that is stored in a case of a power transmission device and oil; and a deformation part 206 connected to the separator body and deforming in accordance with internal temperature of the case 10 to change a guiding direction of oil that is discharged from the separator body by the gear 121.SELECTED DRAWING: Figure 2A

Description

The present disclosure relates to an oil separator and a lubrication device for a power transmission device.

Conventionally, as a lubricant for a transmission, which is a kind of power transmission device, a structure is known in which a gear is used to scoop up the lubricating oil in the transmission case. Patent Document 1 discloses an oil separator housed in a case of a transmission. The oil separator houses the lower half of the gear. Further, the oil separator contains oil for lubricating the lubricated portion (for example, shaft, gear). This oil is scraped up and scattered by the rotation of the gear.

Japanese Unexamined Patent Publication No. 2016-61351

In the case of the transmission lubricator disclosed in Patent Document 1 as described above, by providing the oil separator, it is possible to reduce the stirring resistance acting on the gear when the gear scoops up the oil. However, the stirring resistance cannot be adjusted according to the temperature inside the case of the transmission.

An object of the present disclosure is to provide an oil separator capable of adjusting the stirring resistance of a gear according to a temperature inside a case of a power transmission device and a lubrication device for the power transmission device.

The oil separator according to one aspect of the present disclosure is connected to at least a part of gears housed in a case of a power transmission device, a separator body containing oil, and a separator body, and is deformed according to the temperature inside the case. By doing so, it has a deformed portion that changes the guiding direction of the oil discharged from the separator main body by the gear.

The lubrication device for the power transmission device according to one aspect of the present disclosure is
At least a part of the gears housed in the case of the power transmission device, the separator body that stores the oil, and the oil that is connected to the separator body and deforms according to the temperature inside the case, and is scraped out by the gears. An oil separator having an oil guide for guiding,
It has an oil sump, which is housed in a case and holds oil guided by an oil guide.

According to the present disclosure, it is possible to provide an oil separator capable of adjusting the stirring resistance of a gear according to the temperature inside a case of the power transmission device and a lubrication device for the power transmission device.

FIG. 1 is a diagram schematically showing a lubrication device for a transmission according to the first embodiment. FIG. 2A is a schematic cross-sectional view of a transmission lubricator in a high temperature state. FIG. 2B is a schematic cross-sectional view of a transmission lubricator in a low temperature state. FIG. 3 is a perspective view of the oil separator. FIG. 4A is a schematic cross-sectional view of the lubricator of the transmission according to the second embodiment in a low temperature state. FIG. 4B is a schematic cross-sectional view of the lubricator of the transmission according to the second embodiment in a high temperature state.

Hereinafter, an example of the embodiment according to the present disclosure will be described in detail with reference to the drawings. The lubrication device for the oil separator and the power transmission device according to each embodiment described later is an example of the lubrication device for the oil separator and the power transmission device according to the present disclosure, and the present disclosure is not limited to the embodiments described later.

[Embodiment 1]
The lubrication device 2 of the power transmission device and the oil separator 20 incorporated in the lubrication device 2 of the power transmission device according to the first embodiment will be described with reference to FIGS. 1 to 3.

FIG. 1 shows a transmission lubricator 2 (hereinafter, simply referred to as “lubrication device 2”) for lubricating each element (also referred to as a lubricated portion) constituting the transmission 1 which is a kind of power transmission device. ) Is a diagram schematically showing an example. The lubrication device 2 is incorporated in an AMT (Automated Manual Transmission) mounted on a vehicle (vehicle such as a truck, a bus, or a passenger car) or a transmission 1 such as a manual transmission. The transmission 1 performs a gear stage switching process based on the control of a control device (not shown) or the operation of a shift lever (not shown) by the driver. Hereinafter, regarding the structures of the transmission 1 and the lubricating device 2, only the structures necessary for explaining the features of the lubricating device 2 will be described. Other structures in the transmission 1 and the lubricator 2 may be the same as the structures of various conventionally known transmissions and lubricators of the transmission.

In the following description, the terms "axial direction", "diameter direction", and "circumferential direction" simply mean each direction of the counter shaft 120 (described later) in the assembled state. Hereinafter, the configuration of each element of the transmission 1 and the lubrication device 2 will be described with reference to a state in which the elements are incorporated in the transmission 1.

<Transmission>
The transmission 1 in which the lubrication device 2 is incorporated will be described with reference to FIG. The transmission 1 has a case 10, a main unit 11, and a counter unit 12. The structure of the transmission 1 is not limited to the structure shown in the figure.

The case 10 has a case-side accommodating portion 100 that accommodates oil for lubricating the lubricated portion, a main portion 11, and a counter portion 12. Such a case 10 is fixed to a fixed portion (for example, an engine case) of a vehicle.

<Main part>
The main portion 11 has a main shaft 110 and a main side gear 111.

The main shaft 110 corresponds to an example of an input shaft. The main shaft 110 rotates based on the rotation of the output shaft of the engine. The main shaft 110 is supported by the case 10 via a rotation support member (not shown) such as a bearing.

The main side gear 111 corresponds to an example of the drive side gear. The main side gear 111 is an external gear having teeth on the outer peripheral surface. A main shaft 110 is inserted through the center hole of the main gear 111.

The main side gear 111 rotates together with the main shaft 110. Although not shown, the main unit 11 may have a main side gear (a gear corresponding to a gear of the transmission 1) other than the main side gear 111. Each element constituting the main portion 11 corresponds to an example of the lubricated portion.

<Counter section>
The counter unit 12 is provided in parallel with the main unit 11 below the main unit 11 in the case-side accommodating unit 100. The counter unit 12 has a counter shaft 120 and a counter side gear 121.

The counter shaft 120 is provided in parallel with the main shaft 110. The counter shaft 120 is supported by the case 10 via a rotation support member (not shown) such as a bearing.

The counter side gear 121 corresponds to an example of the driven side gear. The counter side gear 121 is an external gear having a first tooth portion on the outer peripheral surface. The counter side gear 121 may rotate together with the counter shaft 120.

Further, the counter side gear 121 meshes with the main side gear 111. Although not shown, the counter unit 12 may have a counter-side gear (a gear corresponding to a gear of the transmission 1) other than the counter-side gear 121.

The rotation of the main shaft 110 is transmitted to the counter shaft 120 via the main side gear 111 and the counter side gear 121. The rotation of the counter shaft 120 is transmitted to the output shaft (not shown) via other gears or the like (not shown).

<Transmission lubricator>
The lubrication device 2 will be described with reference to FIGS. 1 to 3. The lubricator 2 is a device for supplying oil to the lubricated portion (each element constituting the main portion 11) of the transmission 1 to lubricate the lubricated portion. In the case of the present embodiment, the lubricator 2 can adjust the amount of oil existing around the counter side gear 121 based on the temperature inside the case 10 (for example, the temperature of the oil inside the case 10).

Specifically, the lubrication device 2 includes the counter-side gear 121 and the oil separator 20 described above.

<Oil separator>
The oil separator 20 is fixed to the case 10 and is housed in the case side accommodating portion 100. In the case of this embodiment, the oil separator 20 is not displaced with respect to the case 10. The oil separator 20 is in the shape of a metal box having an opening 201 above. The oil separator 20 has at least a part of the counter-side gear 121 (for example, substantially the lower half of the counter-side gear 121) and a separator-side accommodating portion 202 for accommodating oil. The substantially lower half portion of the counter side gear 121 may be regarded as a portion including the lower end portion of the counter side gear 121. More specifically, the substantially lower half of the counter-side gear 121 is the counter-side gear 121 that passes through the central axis of the counter-side gear 121 and is below the virtual plane parallel to the left-right direction in FIG. 2A. You can think of it as the part of. The oil separator 20 may accommodate a substantially lower half portion of the counter side gear 121 and a portion other than the substantially lower half portion. Further, the oil separator 20 may be made of a non-metal such as synthetic resin.

Specifically, the oil separator 20 has a first side plate portion 203, a second side plate portion 204, a connecting plate portion 205, and a pair of deformed portions 206 and 207. The portion surrounded by the inner surface of the first side plate portion 203, the inner surface of the second side plate portion 204, the inner surface of the connecting plate portion 205, and the inner surfaces of the pair of deformed portions 206 and 207 is the separator side accommodating portion 202. is there.

The first side plate portion 203 is a metal plate-shaped member, and faces one side surface (also referred to as a first side surface) in the axial direction of the counter side gear 121 via a predetermined distance interval. The first side plate portion 203 may be made of a non-metal such as synthetic resin.

The second side plate portion 204 is a plate-shaped member having the same shape and material as the first side plate portion 203, and is a predetermined distance from the other side surface (also referred to as the second side surface) in the axial direction of the counter side gear 121. They face each other through an interval.

The connecting plate portion 205 is a metal plate-shaped member curved along the outer peripheral surface of a part (for example, substantially the lower half portion) of the counter side gear 121. The connection plate portion 205 faces a part of the outer peripheral surface of the counter side gear 121 (that is, the outer peripheral surface of the portion accommodated in the oil separator 20) via a predetermined distance interval. Further, the connection plate portion 205 connects the first side plate portion 203 and the second side plate portion 204. The connection plate portion 205 may be made of a non-metal such as synthetic resin.

The material of the connecting plate portion 205 may be the same as that of the first side plate portion 203 and the second side plate portion 204. The material of the connecting plate portion 205 may be different from the material of the pair of deformed portions 206 and 207.

The connection plate portion 205 has a first end portion 205a at one end in a direction corresponding to the circumferential direction of the counter side gear 121. Further, the connection plate portion 205 has a second end portion 205b at an end portion opposite to the first end portion 205a in a direction corresponding to the circumferential direction of the counter side gear 121.

The first end portion 205a and the second end portion 205b are located below the upper end edges of the first side plate portion 203 and the second side plate portion 204.

A part of the connecting plate portion 205 constitutes the bottom portion 208 of the oil separator 20. The bottom portion 208 may include a lowermost portion of the connecting plate portion 205. The bottom portion 208 may have a plate shape curved along the outer peripheral surface of the lower half portion of the counter side gear 121. Further, the bottom portion 208 may have a flat plate shape.

The oil separator 20 has an oil inflow portion 209 at the bottom portion 208. The oil contained in the case-side accommodating portion 100 passes through the oil inflow portion 209 and flows into the separator-side accommodating portion 202. In the case of this embodiment, the oil inflow portion 209 is an oil supply through hole 209a.

The oil supply through hole 209a is entirely provided at the bottom 208. The oil supply through hole 209a communicates the case side accommodating portion 100 and the separator side accommodating portion 202.

The position of the oil inflow portion 209 is not limited to the case of this embodiment. The oil inflow portion 209 may be provided at a position other than the bottom portion 208 of the connection plate portion 205. Further, the oil inflow portion 209 may be provided in the first side plate portion 203 or the second side plate portion 204. Further, the number of oil inflow portions 209 may be one, or may be two or more.

<Transformed part>
Of the deformed portions 206 and 207, the deformed portion 206 is a plate-shaped member, and the lower end portion thereof is connected (fixed) to the first end portion 205a of the connecting plate portion 205.

Of the deformed portions 206 and 207, the deformed portion 207 is a plate-shaped member, and the lower end portion thereof is connected (fixed) to the second end portion 205b of the connecting plate portion 205. The deformed portion 207 has a configuration symmetrical with the deformed portion 206 in the left-right direction in FIGS. 2A and 2B.

The counter side gear 121, to rotate only in a first direction (FIG. 2A and the direction of the arrow A ₁ in FIG. 2B), deformable portion 207 may be omitted. When the deformed portion 207 is omitted, the second end portion 205b of the connecting plate portion 205 may be located on the same surface as the upper end edges of the first side plate portion 203 and the second side plate portion 204.

The deformed portions 206 and 207 are not connected to other members (first side plate portion 203, second side plate portion 204, and connecting plate portion 205) in portions other than the lower end portion, respectively.

The method of fixing the deformed portions 206 and 207 and the connecting plate portion 205 is not particularly limited. The deformed portions 206 and 207 and the connecting plate portion 205 may be fixed by welding, for example, or may be fixed via fastening parts (for example, screws and bolts) (not shown).

The deformed portions 206 and 207 face each other in the left-right direction in FIGS. 2A and 2B. The upper end edges of the pair of deformed portions 206 and 207 are located on the same surface as the upper end edges of the first side plate portion 203 and the second side plate portion 204, respectively.

Each of such deformed portions 206 and 207 can change its own shape according to the temperature inside the case 10. The deformed portions 206 and 207 may each be composed of a metal (bimetal, shape memory alloy, etc.) that deforms according to the ambient temperature.

Each of the deformed portions 206 and 207 is deformed from the state shown in FIG. 2A (high temperature state) to the state shown in FIG. 2B (low temperature state) as the temperature inside the case 10 decreases from the first predetermined temperature. When the temperature inside the case 10 reaches the second predetermined temperature, the deformed portions 206 and 207 are in the state (low temperature state) shown in FIG. 2B, respectively.

In the state shown in FIG. 2A (high temperature state), the inclination angles of the deformed portions 206 and 207 with respect to the vertical direction are the first angles θ ₁ (see FIG. 2A), respectively. In the state shown in FIG. 2B (low temperature state), the inclination angles of the deformed portions 206 and 207 with respect to the vertical direction are the second angles θ ₂ (see FIG. 2B), respectively. The first angle θ ₁ is smaller than the second angle θ ₂ (θ ₁ <θ ₂ ).

That is, as the temperature inside the case 10 decreases from the first predetermined temperature, the inclination angles of the deformed portions 206 and 207 with respect to the vertical direction change from the first angle θ ₁ to the second angle θ _{2, respectively.} Deformation starts from the connection portion between the deformation portions 206 and 207 and the connection plate portion 205 so as to move toward. In the state shown in FIG. 2A (high temperature state), the inner side surfaces of the deformed portions 206 and 207, the side edges of the first side plate portion 203 facing the inner side surfaces, and the side edges of the second side plate portion 204 are in contact with each other. I'm in contact.

<Action / effect>
Hereinafter, the action / effect obtained from the lubrication device 2 according to the present embodiment will be described. In the following description, the counter-side gear 121 is assumed to only rotate in a first direction (the direction of arrow A ₁ in FIG. 2A and FIG. 2B).

First, the viscosity of the oil contained in the separator-side accommodating portion 202 increases as the temperature of the oil decreases. When the amount of oil in the separator side accommodating portion 202 in the high temperature state is equal to the amount of oil in the separator side accommodating portion 202 in the low temperature state, the stirring resistance acting on the counter side gear 121 as the oil temperature decreases ( Hereinafter, it is simply referred to as “stirring resistance”), which becomes larger. The stirring resistance acts on the counter-side gear 121 from the oil in the separator-side accommodating portion 202 when the counter-side gear 121 scrapes up. By reducing the amount of oil in the separator side accommodating portion 202, the stirring resistance becomes small.

In the case of the present embodiment, the deformed portions 206 and 207 change from the state shown in FIG. 2A (high temperature state) to the state shown in FIG. 2B (low temperature state) as the temperature in the case 10 decreases from the first predetermined temperature. It transforms to get closer.

Therefore, the amount of oil released from the separator-side accommodating portion 202 by the counter-side gear 121 increases as the temperature inside the case 10 decreases. The reason for this will be described.

In the state (high temperature state) shown in FIG. 2A, a portion of the scooped up oil by the counter-side gear 121, as shown by arrow A ₂ in FIG. 2A, is released from the separator-side housing section 202 to the outside. However, in the hot state, a part of the scooped up oil by the counter-side gear 121, not exceed the deformation portion 206, as shown by arrow A ₃ in FIG. 2A, the flow returns to the separator-side housing section 202.

On the other hand, since the inclination angle θ ₂ of the deformed portions 206 and 207 in the state shown in FIG. 2B (low temperature state) is larger than the inclination angle θ ₁ of the deformed portions 206 and 207 in the state shown in FIG. 2A, it is scratched by the counter side gear 121. most of raised oil, as shown by the arrow a ₄ in FIG. 2B, is discharged from the separator-side housing section 202 to the outside. Therefore, the amount of oil that cannot exceed the deformed portion 206 and returns to the separator side accommodating portion 202 is larger than the amount of oil that cannot exceed the deformed portion 206 and returns to the separator side accommodating portion 202 in the state shown in FIG. 2A (high temperature state). There are few. That is, the oil scraped up by the counter-side gear 121 is more likely to be discharged to the outside of the separator-side accommodating portion 202 in the low-temperature state than in the high-temperature state. As a result, the amount of oil in the separator side accommodating portion 202 is smaller in the low temperature state than in the high temperature state, so that the stirring resistance is reduced.

As described above, the lubricator 2 of the present embodiment can adjust the stirring resistance by changing the amount of oil in the separator side accommodating portion 202 according to the temperature in the case 10 of the transmission 1. According to the lubrication device 2 of the present embodiment, the structure of the deformed portions 206 and 207 is devised to optimize the amount of oil in the separator side accommodating portion 202 with respect to the temperature inside the case 10. It is also possible to keep the stirring resistance within a desired range regardless of the temperature inside.

[Embodiment 2]
The second embodiment according to the present disclosure will be described with reference to FIGS. 4A and 4B. In the description of the present embodiment, the same structure as that of the first embodiment is designated by the same reference numerals as those of the first embodiment, and detailed description thereof will be omitted.

<Lubricator>
The lubrication device 2B of the present embodiment includes the counter side gear 121, the oil sump 21, and the oil separator 20B described in the description of the first embodiment.

<Oil pool>
The oil sump 21 is fixed at a predetermined position on the case 10. The oil sump 21 may be a box-shaped member having an opening at the upper side. The oil sump 21 has a first accommodating portion 210 for temporarily accommodating oil. The oil sump 21 has a bottom plate portion 211 having a discharge portion 212 for discharging the oil stored in the first storage portion 210.

In the case of the present embodiment, the discharge unit 212 is a through hole that constantly communicates between the first accommodating unit 210 and the outside. The discharge unit 212 communicates the first storage unit 210 with the outside and is stored in the first storage unit 210 only when, for example, the amount of oil stored in the first storage unit 210 exceeds a predetermined amount. You may drain the oil.

In the state shown in FIG. 4A (low temperature state), the discharge flow rate of the oil discharged from the discharge section 212 is preferably smaller than the inflow flow rate of the oil guided by the deformed section 206B and flowing into the oil sump 21. Further, the discharge flow rate of the oil discharged from the discharge unit 212 is related to the position of the liquid level α ₂ of the oil stored in the case side storage unit 100, which is required in the state shown in FIG. 4A (low temperature state). It may be determined as appropriate.

For example, the lubrication device 2B may have a control unit (not shown, hereinafter referred to as “control unit of the lubrication device 2B”) that controls the discharge flow rate of the oil discharged from the discharge unit 212. The control unit of the lubricator 2B may control the discharge flow rate of the oil discharged from the discharge unit 212 according to the amount of oil contained in the oil sump 21. Further, the control unit of the lubrication device 2B controls the discharge flow rate of the oil discharged from the discharge unit 212 according to the position (height) of the liquid level α ₂ of the oil stored in the case side storage unit 100. May be good.

The oil sump 21 as described above is provided at a position capable of accommodating the oil guided by the deformed portion 206B in the state shown in FIG. 4A (low temperature state). In the case of this embodiment, since the counter-side gear 121 is rotated only in a first direction (the direction of arrow A ₁ in FIG. 4A and FIG. 4B), not provided an oil reservoir 21 which corresponds to the deformation portion 207B. However, the counter-side gear 121 when also rotates in the second direction (arrow A ₁ and opposite direction in FIG. 4A and FIG. 4B) may be provided an oil reservoir 21 which corresponds to the deformation portion 207B.

<Oil separator>
The structure of the deformed portions 206B and 207B of the oil separator 20B is different from that of the deformed portions 206 and 207 of the first embodiment.

Each of the deformed portions 206B and 207B is deformed in the state (low temperature state) shown in FIG. 4A as the temperature in the case 10 of the transmission 1 (for example, the temperature of the oil in the case 10) rises from the second predetermined value. The shapes of the portions 206B and 207B are deformed toward the shapes of the deformed portions 206B and 207B in the state shown in FIG. 4B (high temperature state).

The inclination angles of the deformed portions 206B and 207B in the vertical direction in the state shown in FIG. 4A (low temperature state) are the third angles θ ₃ (see FIG. 4A), respectively. The inclination angles of the deformed portions 206B and 207B with respect to the vertical direction in the state shown in FIG. 4B (high temperature state) are the fourth angles θ ₄ (see FIG. 4B), respectively. The third angle θ ₃ is smaller than the fourth angle θ ₄ (θ ₃ <θ ₄ ).

Similar to the first embodiment, in the state shown in FIG. 4A (low temperature state), the inner side surfaces of the deformed portions 206B and 207B, the side edge of the first side plate portion 203 facing the inner side surface, and the side of the second side plate portion 204. It is in contact with the edge (see FIG. 3). Also in this embodiment, the counter-side gear 121, to rotate only in a first direction (the direction of arrow A ₁ in FIG. 4A and FIG. 4B), deforming portion 207B may be omitted. When the deformed portion 207B is omitted, the second end portion 205b of the connecting plate portion 205 may be located on the same surface as the upper end edges of the first side plate portion 203 and the second side plate portion 204.

<Action / effect>
Hereinafter, the action / effect obtained from the lubrication device 2B according to the present embodiment will be described. In the following description, the counter-side gear 121 is assumed to only rotate in a first direction (the direction of arrow A ₁ in FIG. 4A and FIG. 4B).

In this embodiment, in the state (low state) shown in FIG. 4A, the oil scooped up by the counter-side gear 121 is guided in the direction of arrow A ₅ by deformation portion 206B, is released from the separator-side housing section 202 To. The oil released from the separator side accommodating portion 202 is temporarily accommodated in the oil sump 21 as the stored oil 3. Then, depending on the amount of the stored oil 3, the liquid level of the oil stored in the case-side storage portion 100 drops from the alternate long and short dash line α _{1 in} FIG. 4A to the position shown by the solid line α ₂ in FIG. 4A. Further, in response to the decrease in the oil level in the case side accommodating portion 100, the oil liquid level in the separator side accommodating portion 202 also changes to the position indicated by the solid line α ₂ in FIG. 4A (“Oil liquid level in a low temperature state”). Also referred to as "position"). As a result, the amount of oil in the separator side accommodating portion 202 is reduced, and the stirring resistance acting on the counter side gear 121 is reduced.

Further, in the state (high temperature state) shown in FIG. 4B, the oil scooped up by the counter-side gear 121 is guided in the direction of arrow A ₆ by deformation portion 206B, it is discharged from the separator-side housing section 202. In the high temperature state, the oil released from the separator side accommodating portion 202 is not accommodated in the oil sump 21. In a high temperature state, a part of the oil released from the separator side accommodating portion 202 may be accommodating in the oil sump 21, but the amount thereof is small. Therefore, the liquid level of the oil in the case-side housing portion 100, and the liquid surface of the oil in the separator-side housing portion 202, the position of the liquid surface of the oil at the position ( "high temperature state indicated by the solid line alpha ₁ in FIG. 4B It is also referred to as). As a result, the amount of oil in the separator side accommodating portion 202 becomes larger in the high temperature state than in the low temperature state. However, since the viscosity of the oil in the high temperature state is low, the stirring resistance of the counter side gear 121 does not increase unnecessarily.

As described above, according to the lubrication device 2B of the present embodiment, the stirring resistance of the counter side gear 121 is changed by changing the amount of oil in the separator side accommodating portion 202 according to the temperature in the case 10 of the transmission 1. Can be adjusted. According to the lubrication device 2B of the present embodiment, the structures of the deformed portions 206B and 207B and the structure of the oil sump 21 are devised to reduce the amount of oil in the separator side accommodating portion 202 with respect to the temperature in the case 10. By optimizing, it is possible to keep the stirring resistance within a desired range regardless of the temperature inside the case 10.

The transmission and oil separator according to the present disclosure are not limited to AMT or manual transmissions, and can be applied to various mechanical devices including power transmission devices such as speed reducers and differential devices.

1 Transmission (power transmission device)
10 Case 100 Case side accommodating part 11 Main part 110 Main shaft 111 Main side gear 12 Counter part 120 Counter shaft 121 Counter side gear 2, 2B Transmission lubricator 20, 20B Oil separator 201 Opening 202 Separator side accommodating part 203 One side plate part 204 Second side plate part 205 Connection plate part 205a First end part 205b Second end part 206, 206B, 207, 207B Deformed part 208 Bottom part 209 Oil inflow part 209a Oil supply through hole 21 Oil pool 210 First storage Part 211 Bottom plate part 212 Discharge part 3 Storage oil

Claims (8)

At least a part of the gears housed in the case of the power transmission device, and the separator body that holds the oil.
An oil separator having a deformed portion that is connected to the separator body and deforms according to the temperature inside the case to change the guiding direction of the oil discharged from the separator body by the gear. The deformed portion is connected to a portion of the separator body facing the outer peripheral surface of the gear, and changes its guiding direction by changing its own angle with respect to the vertical direction based on the deformation. The oil separator described. The oil separator according to claim 2, wherein the deformed portion is deformed so that the angle becomes smaller as the temperature rises. The oil separator according to claim 2, wherein the deformed portion is deformed so that the angle becomes larger as the temperature is lowered. At least a part of the gear housed in the case of the power transmission device, the separator body containing the oil, and the separator body are connected to the separator body and deformed according to the temperature inside the case to be scraped off by the gear. An oil separator having an oil guide portion for guiding the oil,
It has an oil sump, which is housed in the case and houses the oil guided by the oil guide.
Lubrication device for power transmission equipment. The fifth aspect of the present invention, wherein the oil guide portion changes the guide direction of the oil so that the amount of the oil guided by the oil guide portion and flowing into the oil pool decreases as the temperature decreases. Lubricating device for power transmission equipment. The oil sump has a discharge part for discharging the oil contained in the oil sump.
The lubrication device for a power transmission device according to claim 5 or 6, wherein the oil discharged from the discharge unit returns to the oil storage unit of the case. The oil guide portion is connected to a portion of the separator body facing the outer peripheral surface of the gear, and changes its own angle with respect to the vertical direction based on its own deformation, according to any one of claims 5 to 7. The lubrication device for the power transmission device described.

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