KR20230065630A - Partition Wall Flow Path type Drive Motor - Google Patents

Abstract

A partition flow path-type drive motor (1) of the present invention forms an oil backflow prevention partition (10) in the internal space of a reducer case (3) by a left extension partition (15), a right extension partition (16), a middle extension partition (17), and a drive gear partition (18). The oil backflow prevention partition (10) forms a labyrinth structure by partition shapes (15, 16, 17, 18) to block oil scattered by gear rotation of a reducer in the internal space of the reducer case (3) to prevent oil from leaking to an air breather nipple (24). Specifically, the partitions (15, 16, 17, 18) are formed in a labyrinth structure to resupply the scattered oil blocked by the right partition end length (t) of the right extension partition (16) to the reducer case by flowing down in the weight direction flow (namely, the direction (g) of gravitational acceleration) to prevent damage to the reducer caused by temperature overheating by preventing reducer oil leakage while maintaining the same oil vapor discharge level.

Description

Partition wall flow path type drive motor {Partition Wall Flow Path type Drive Motor}

The present invention relates to a drive motor, and more particularly, to a bulkhead flow path type drive motor in which oil scattered by gear rotation of a reducer does not leak into an air breather together with oil vapor.

In general, an electric motorcycle drive motor is composed of a motor and a reducer, and forms an integral structure with a motor case and a reducer case.

For example, the motor generates torque, and the reducer is composed of a first-stage reducer with a drive gear and one driven gear to increase motor torque.

In particular, the drive motor has a nipple assembly in the reducer case, and the nipple assembly is composed of an oil nipple connected to an oil inlet for supplying oil to the reducer and an air breather nipple connected to an air breather for discharging oil vapor. In this case, each of the nipples is connected to an oil hose and an air breather hose, and an end of the hose is connected to an oil inlet, a stopper, and an air breather.

Therefore, the air breather nipple can prevent the increase in pressure inside the reducer case under motor operation by discharging the oil vapor inside the reducer case toward the air breather when the oil vapor pressure increases due to the increase in the temperature inside the reducer case.

Domestic Patent No. 10-2091784 (March 16, 2020)

However, since the oil vapor path of the air breather nipple and the oil path of the oil nipple form a communication structure (e.g., V-shaped path) with the inside of the reducer case, the increase in oil vapor pressure inside the reducer case causes the oil to flow together through the oil vapor path. This will allow it to exit towards the breather nipple.

The oil discharged to the outside along with the oil vapor causes a reduction in the oil flow rate of the reducer, which inevitably leads to a problem in which the purpose of the gear lubricating oil to prevent the increase in temperature inside the reducer case cannot be achieved.

Therefore, in view of the above, the present invention is that the oil scattered by the gear rotation of the reducer is blocked in the internal space of the reducer case so that it does not leak to the air breather nipple, and in particular, the partition wall is moved to the end of the partition wall forming a labyrinth structure. The blocked scattering oil descends in the direction of gravity acceleration, which is the flow in the direction of its own weight, and is re-supplied to the reducer case to provide a bulkhead flow path type drive motor that can prevent damage to the reducer due to overheating by preventing oil leakage from the reducer while maintaining the same oil vapor emission level. There is a purpose.

In the bulkhead passage type drive motor of the present invention for achieving the above object, the inner space of the reducer case includes a left extension partition wall, a right extension partition wall, and a middle extension partition wall that divide oil and oil vapor passages, and the left extension partition wall and the right extending bulkhead vertically intersect, the right extending bulkhead and the middle extending bulkhead vertically intersect, and a right bulkhead end length for preventing scattering of the oil is between a distance between the left extending bulkhead and the middle extending bulkhead It is characterized by being located.

As a preferred embodiment, a drive gear partition wall is provided in the inner space of the reducer case, and the left extension partition wall, the right extension partition wall, and the middle extension partition wall together with the drive gear partition wall divide the passage into a plurality of spaces.

As a preferred embodiment, each of the left extension bulkhead, the right extension bulkhead, the middle extension bulkhead, and the drive gear bulkhead is positioned differently at the end of the partition wall so that the inner space of the reducer case forms a labyrinth structure. do.

In a preferred embodiment, the arc-shaped structure of the left extension partition wall and the bent structure of the drive gear partition wall form an internal space of the reducer case in a rhombic shape, and the inclined straight structure of the right extension partition wall and the middle extension partition wall form a diamond shape. The bent linear structure of divides the inner space of the reducer case into the plurality of spaces.

As a preferred embodiment, the plurality of spaces is formed as a space between the left extension bulkhead and the intermediate extension bulkhead and through which the oil passes, and an oil vapor passage formed as a space between the right extension bulkhead and the intermediate extension bulkhead through which the oil vapor passes. , and a communication passage formed as a space between the right extension partition wall and the drive gear partition wall through which the oil and the oil vapor pass.

In a preferred embodiment, the combination of the left extension partition wall and the right extension partition wall, the right extension partition wall combination and the middle extension partition wall, and the left extension partition wall and the drive gear partition wall combination face each other to form a gap, The gap serves as a connection passage through which the oil and the vapor pass.

As a preferred embodiment, the connection passage forms the oil passage, the milk steam passage and the communication passage into one space.

As a preferred embodiment, the inner space of the reducer case is adjacent to the 2-stage reducer, the left extension partition wall covers the upper portion of the secondary driven gear of the 2-stage reducer, and the drive gear partition wall is the 2-stage reducer. Covers the upper portion of the driving gear and the primary driven gear, the driving gear is rotated by a motor, the primary driven gear meshes with and rotates with the driving gear, and the secondary driven gear meshes with the primary driven gear to rotate rotated

As a preferred embodiment, the inner space of the reducer case communicates with an oil nipple and an air breather nipple, the oil is injected into the oil nipple, and the oil vapor is discharged through the air breather nipple.

The bulkhead passage type drive motor of the present invention implements the following actions and effects.

First, it is possible to prevent leakage of oil from the reducer because the gear lubricating oil of the reducer does not leak together with the oil vapor through the air breather even when oil is scattered due to gear rotation of the reducer or the oil vapor pressure rises inside the reducer case. Second, by forming a partition with a labyrinth structure, the oil that rises together with the oil vapor is supplied back to the reducer case by gravity, so that the shortage of gear lubricating oil in the reducer case does not occur. Third, damage to the reducer is prevented by preventing leakage of gear lubrication oil in the reducer case. Fourth, oil vapor discharge is discharged through the same route as before, so no structural or design changes are required for oil and air breather nipples. Fifth, by maintaining sufficient gear lubricating oil at all times, reducer damage due to overheating inside the reducer case. this is prevented

1 is a configuration diagram of a bulkhead flow path type drive motor according to the present invention, and FIG. 2 is a state in which oil leakage from the reducer of the air breather is blocked through the flow path action of the oil backflow prevention bulkhead according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying exemplary drawings, and since these embodiments can be implemented in various different forms by those skilled in the art as an example, the description herein It is not limited to the embodiment of

Referring to FIG. 1 , the drive motor 1 includes a motor 2, a two-stage speed reducer 5, and an oil backflow prevention bulkhead 10.

In particular, the drive motor 1 applies a downward inclination layout to the oil backflow prevention bulkhead 10 in the direction of its own weight, so that some oil mixed with oil vapor rising toward the air breather nipple 23 of the nipple assembly 20 flows in the direction of its own weight (That is, by returning to the secondary driven gear 8 of the second gear reducer 5 in the direction of gravity acceleration (g)), oil leakage is prevented without disturbing oil vapor discharge.

Therefore, the drive motor 1 is characterized as a bulkhead passage type drive motor 1 .

For example, the motor 2 generates torque, the two-stage reducer 5 is built into a reducer case 3 integrated with the motor case of the motor 2, and the reducer case 3 is a nipple assembly ( 20) forms the oil backflow prevention bulkhead 10 to be assembled.

In particular, the reducer case 3 forms an oil backflow prevention bulkhead 10 in the upper section of the case. In this case, the upper section of the case is the inner space of the reducer case 3 formed above the drive gear 6 constituting the two-stage reducer 5, the first driven gear 7, and the second driven gear 8. , which is the flow in the direction of its own weight (ie, the direction of gravity acceleration (g)) in which oil is injected into the oil nipple 21 and goes down toward the secondary driven gear 8.

For example, the two-speed reducer 5 rotates in engagement with a drive gear 6 that directly receives motor torque, a primary driven gear 7 that rotates in mesh with the drive gear 6, and a primary driven gear 7 that rotates It is composed of a secondary driven gear 8 that

Specifically, the oil backflow prevention bulkhead 10 is located in the case upper section of the reducer case 3, and the oil nipple 21 constituting the nipple assembly 20 and the air breather nipple 23 communicate with each other.

To this end, the oil backflow prevention bulkhead 10 is composed of three passages 11, 12, and 13 and four partition walls 15, 16, 17, and 18.

For example, the flow passages 11, 12, and 13 are divided into an oil passage 11, an oil vapor passage 12, and a communication passage 13 to form three.

In particular, the oil passage 11 communicates with the oil nipple 21 of the nipple assembly 20, the steam passage 12 communicates with the air breather nipple 23 of the nipple assembly 20, and the communication passage ( 13) is a structure in which the passage space of the oil backflow prevention bulkhead 10 is open only toward the secondary driven gear 8 of the two-stage reducer 5.

For example, the bulkheads 15, 16, 17, and 18 are divided into a left bulkhead 15, a right extended bulkhead 16, a middle extended bulkhead 17, and a drive gear bulkhead 18 to form four.

In particular, the left extension bulkhead 15 extends in an arc shape from the upper part of the reducer case 3 toward the lower part to cover the upper part of the secondary driven gear 8, and the arc-shaped bulkhead end is the driving gear partition wall ( 18), the oil flows from the oil passage 11 through the communication passage 13 toward the secondary driven gear 8.

On the other hand, the driving gear bulkhead 18 extends from the upper part of the reducer case 3 to the lower part in a bent shape (ie, inverted b shape) to cover the upper part of the secondary driven gear 8, and among the bent shapes The end of the partition wall of the horizontally inclined section continues toward the left extension partition wall 15 to form the communication gap.

Therefore, the combination of the left extension partition wall 15 and the driving gear partition wall 18 is a space in which the oil passage 11, the steam passage 12, and the communication passage 13 are formed in the upper section of the case of the reducer case 3. It forms an approximately rhombic shape.

And the right extension bulkhead 16 extends toward the left extension bulkhead 15 in a horizontally inclined shape (ie, inclined straight shape or downward straight inclined shape) in the vertical section of the bent shape of the driving gear bulkhead 18, , The horizontal inclined shape divides the steam passage 12 and the communication passage 13 and forms a connection gap with the left extension partition wall 15.

On the other hand, the middle extension bulkhead 17 extends from the upper part of the reducer case 3 to the lower part in a vertically bent shape (ie, a bent straight shape) and extends toward the right extension bulkhead 16, so that the oil passage 11 and oil vapor The flow path 12 is partitioned, and the end of the vertically bent partition wall forms a connection gap spaced apart from the right extension partition wall 16, so that oil vapor flows into the steam flow path 12. In this case, the right bulkhead 16 has an end of the partition wall having a straight downward slope with a right partition end length t, and the right partition wall end length t is about 1/2 the width of the oil passage 11. narrow it down to 2.

Therefore, the combination of the right extension partition wall 16 and the middle extension partition wall 17 forms an approximately diamond-shaped interior formed in the upper section of the case of the reducer case 3 with the oil passage 11 on the upper left side and the steam passage 12 on the upper right side. ) and the lower communication passage 13.

For example, the nipple assembly 20 is composed of an oil nipple 21 and an air breather nipple 23. In this case, the oil nipple 21 and the air breather nipple 23 form an integral structure as a connecting bracket, and are mounted on the reducer case 3 by fastening the connecting bracket to the reducer case 3 with bolts.

In particular, the oil nipple 21 is connected to an oil hose (not shown) having an oil inlet and a stopper at the end of the hose, and is a passage through which oil is injected into the oil passage 11 of the oil backflow prevention bulkhead 10. It works. The air breather nipple 23 is connected to an air breather hose (not shown) and acts as a passage through which oil vapor escapes to the oil vapor passage 12 of the oil backflow prevention bulkhead 10.

Meanwhile, FIG. 2 shows the formation of an oil inflow path and an oil vapor discharge path of the oil backflow prevention bulkhead 10.

As shown, the oil inflow path is a secondary driven gear ( 8), it is formed from the top to the bottom of the reducer case 3. On the other hand, in the oil vapor discharge path, the oil vapor from the space of the secondary driven gear 8 is connected from the communication channel 13 through the oil channel 11 and the vapor channel 12 to the air breather nipple 23, so that the reducer case (3) is formed from the bottom to the top.

The oil flow path 11, the oil vapor flow path 12, and the communication flow path 13 in the oil inlet path and the oil vapor discharge path are as follows.

For example, the oil passage 11 is connected to the communication passage 13 above the second driven gear 8, so that the oil injected into the oil nipple 21 flows in the direction of its own weight (ie, in the direction of gravity acceleration (g)). works to go down In addition, the oil vapor passage 12 is adjacent to the oil passage 11 above the secondary driven gear 8, so that the oil vapor generated in the internal space of the reducer case 3 passes through the communication passage 13 to the air breather nipple ( 23) works to get out.

In particular, the communication passage 13 has a one-side opening structure toward the second driven gear 8 of the second gear reducer 5, so that the oil injected through the oil nipple 21 is supplied to the second driven gear 8 while supplying the second gear 8. The oil vapor rising from the driven gear (8) side of the car acts to escape through the air breather nipple (23).

In addition, the actions of the left extension partition wall 15, the right extension partition wall 16, the middle extension partition wall 17, and the driving gear partition wall 18 in the oil inflow path and the oil vapor discharge path are as follows.

For example, the left extension partition wall 15 and the driving gear partition wall 18 act as partition walls to block oil scattered during gear rotation of the two-stage reducer 5, and the right extension partition wall 16 and the intermediate extension The partition wall 17 acts as a partition wall to block backflow of oil when oil is injected into the inner space of the two-stage reduction gearbox 5. Also, the communication gap formed by the left extension bulkhead 15 and the driving gear bulkhead 18 forms a flow passage for oil and oil vapor, and the horizontal slope formed by the left extension bulkhead 15 and the right extension bulkhead 16 The connecting gap of the shape forms the flow passage of oil and oil vapor.

In particular, the right bulkhead end length t of the right extension bulkhead 16 protrudes toward the oil passage 11 so that some of the injected oil flows from the oil passage 11 to the communication passage 13 (e.g., reverse flow oil). Together with the thick broken line), it acts as a barrier to block scattered oil (eg, thick broken line) flowing backward from the communication flow path 13 to the oil flow path 11.

Therefore, the partition walls 15, 16, 17, and 18 have a labyrinth structure as a whole by changing the position of the ends of the partition walls, and are inclined in the direction of their own weight through their combination to rotate the secondary driven gear 8 Damage to the reducer can be prevented by preventing oil leakage by blocking the oil penetrated by scattering by the right bulkhead end length t of the right extension bulkhead 16 and resupplying it to the reducer case 3 again.

As described above, the partition wall flow path type drive motor 1 according to the present embodiment has the left extension partition wall 15, the right extension partition wall 16, the middle extension partition wall 17 and driving in the inner space of the reducer case 3. The oil backflow prevention bulkhead 10 is formed by the gear bulkhead 18, and the combination of the left extension bulkhead 15 and the right extension bulkhead 16, the right extension bulkhead 16 and the middle extension bulkhead 17 The oil passage 11, the steam passage 12, and the communication passage 13 are formed into one space through the gap formed by the combination and the combination of the left extension partition wall 15 and the drive gear partition wall 18. The flow path of the oil inflow path and the oil vapor discharge path is divided.

Therefore, in the bulkhead flow-type drive motor 1, the oil scattered by the rotation of the gear of the reducer is blocked from the internal space of the reducer case 3 and does not leak to the air breather nipple 24, especially the bulkheads 15, 16, and 17 ,18) is formed in a labyrinth structure so that the scattered oil blocked by the right bulkhead end length (t) of the right extension bulkhead 16 descends in the direction of its own weight (ie, the direction of gravity acceleration (g)) and By re-supplying the oil vapor, it is possible to prevent damage to the reducer due to overheating by preventing oil leakage from the reducer while maintaining the same level of oil vapor emission.

1: driving motor
2 : motor
3: reducer case 5: 2-stage reducer
6: driving gear 7: primary driven gear
8: 2nd driven gear
10: oil backflow prevention bulkhead
11: oil flow path 12: oil vapor flow path
13: communication euro
15: left extension bulkhead 16: right extension bulkhead
17: intermediate extension bulkhead 18: drive gear bulkhead
20: nipple assembly
21: oil nipple 23: air breather nipple

Claims (10)

The inner space of the reducer case includes a left extension partition wall, a right extension partition wall, and a middle extension partition wall that divide oil and steam flow paths,
The left extension partition wall and the right extension partition wall vertically intersect,
The right extension partition wall and the middle extension partition wall vertically intersect,
A drive motor, characterized in that a right bulkhead end length for blocking the scattering of the oil is located between the left extension bulkhead and the middle extension bulkhead.
The method according to claim 1, wherein a drive gear bulkhead is provided in the inner space of the reducer case,
The left extension partition wall, the right extension partition wall, and the middle extension partition wall, together with the driving gear partition wall, divide the passage into a plurality of spaces.
The method according to claim 2, wherein each of the left extension bulkhead, the right extension bulkhead, the middle extension bulkhead and the drive gear bulkhead
The drive motor, characterized in that the location of the end of the partition wall is changed so that the inner space of the reducer case forms a labyrinth structure.
The method according to claim 2, wherein the arc-shaped structure of the left extension partition wall and the bent structure of the drive gear partition wall form an internal space of the reducer case in a diamond shape,
The drive motor, characterized in that the inclined linear structure of the right extension partition and the bent linear structure of the middle extension partition divides the internal space of the reducer case into the plurality of spaces.
The method according to claim 5, wherein the plurality of spaces
An oil passage formed as a space between the left extension partition wall and the middle extension partition wall through which the oil passes;
An oil vapor passage formed as a space between the right extension partition wall and the middle extension partition wall through which the oil vapor passes, and
A drive motor, characterized in that it is formed as a space between the right extension partition wall and the drive gear partition wall and is divided into a communication passage through which the oil and the oil vapor pass.
The method according to claim 5, wherein the combination of the left extending bulkhead and the right extending bulkhead, the combination of the right extending bulkhead and the middle extending bulkhead, and the combination of the left extending bulkhead and the drive gear bulkhead face each other to form a gap,
The drive motor, characterized in that the gap serves as a connection passage through which the oil and the vapor pass.
The method according to claim 6, wherein the connection passage
The drive motor characterized in that the oil passage, the milk steam passage and the communication passage form a single space.
The method according to claim 1, wherein the inner space of the reducer case is adjacent to the two-stage reducer,
The left extension bulkhead covers the upper part of the second driven gear of the second gear reducer (5),
The driving gear bulkhead covers the upper portion of the driving gear and the primary driven gear of the second gear reducer.
The method according to claim 8, wherein the drive gear is rotated by a motor,
The drive motor, characterized in that the primary driven gear is engaged with the driving gear and rotated, and the secondary driven gear is engaged with the primary driven gear and rotated.
The method according to claim 1, wherein the inner space of the reducer case communicates with an oil nipple and an air breather nipple,
The drive motor, characterized in that the oil is injected into the oil nipple, and the oil vapor is discharged through the air breather nipple.

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