JP5852812B2 - Partition structure and transmission - Google Patents

Description

  The present invention relates to a partition structure and a transmission in which at least one of two housings in which fluid is stored does not easily move the stored fluid to the other housing.

Patent Document 1, Patent Document 2 and Patent Document 3 describe general techniques of parking rods.
Such a parking rod is arranged in a state of penetrating a transmission or the like. Lubricating oil is stored in the transmission or the like.
In addition, transmissions, etc., are divided into multiple housings to prevent this air sucking so that the lubricating oil is biased to one side due to the acceleration of the hill or the automobile and the suction port of the lubricating oil is not exposed and the air sucking state does not occur. Yes.

JP 2004-44689 A JP 2006-281906 A JP 2009-197858 A

Although it is divided into a plurality of housings to prevent unevenness of the lubricating oil, since the parking rod is disposed through the plurality of housings, a through hole is required in the wall that divides the plurality of housings.
Lubricating oil moves to the adjacent housing through this through hole, and there is a possibility that the lubricating oil is biased and an air sucking state is generated.

  This invention is made | formed in view of the said subject, and an example of the objective is to provide the partition structure which the bias of lubricating oil does not arise.

The partition structure of the present invention passes through a communication hole formed in a wall portion separating the first housing, the second housing, and the first housing and the second housing, and the wall surface of the wall portion. And a partition plate that closes the communication hole, and at least one of the first housing and the second housing has a liquid in the lower part. The partition plate has a shape capable of covering the communication hole even when movement in a direction parallel to the wall surface of the wall portion of the rod occurs, and the partition plate is attached to the rod. The connected biasing means is always pressed against the wall portion around the communication hole within the movable range of the rod.

  Preferably, the first housing and the second housing are housings for accommodating a transmission mechanism for transmitting power from an automobile engine.

Preferably, the first housing is a housing for housing a parking gear, and the rod is a parking rod for fixing the parking gear, and at least one of the first housing and the second housing. The liquid stored in one lower part is lubricating oil.

  Preferably, a through hole is formed in the partition plate, and the parking rod passes through the through hole.

  Preferably, the urging means urges the parking rod in a moving direction when the parking rod is brought into a parking state by a reaction force that presses the partition plate.

  Preferably, the transmission of the present invention uses the partition structure of the present invention.

  According to the present invention, it is possible to provide a partition structure in which the lubricant is not biased.

It is explanatory drawing of the position which provides a partition structure in 1st Embodiment. It is explanatory drawing of arrangement | positioning of a parking rod. It is explanatory drawing from the III direction of FIG. 2 of a parking mechanism. It is explanatory drawing of the partition structure of this embodiment. It is a comparative example with the partition structure of this embodiment. It is explanatory drawing of 2nd Embodiment.

<First Embodiment>
FIG. 1 is an explanatory diagram of a position where a partition structure 1 is provided in the first embodiment.
In particular, here, the partition structure 1 will be described using an example used for a transmission TM of an automobile.
Needless to say, the position where the partition structure 1 is provided is not limited to this position, and may be another position. Further, it is not intended to limit the present invention to those provided in the automobile transmission.

Hereinafter, the first embodiment of the present invention will be described in detail with reference to FIG.
As shown in FIG. 1, an automobile or the like uses the torque generated from the engine 101 as a clutch 103, a torque converter 105, a forward / reverse switching mechanism 107, a first pulley 109, a drive chain 111, a second pulley 113, and a final deceleration. It is transmitted to the wheel 117 via the part 115.
Here, the transmission mechanism refers to a mechanism for transmitting power such as the clutch 103, the torque converter 105, the forward / reverse switching mechanism 107, the first pulley 109, the drive chain 111, the second pulley 113, and the final deceleration unit 115. .
Although this transmission mechanism is for a mini vehicle, it is not intended to be limited to such a transmission mechanism. Needless to say, the transmission mechanism may be one used for ordinary passenger cars, or may be a transmission mechanism that transmits power to the front wheels and / or the rear wheels.
Further, details of the forward / reverse switching mechanism 107 are omitted because they are well known.

A parking gear 119 is connected to the gear of the final deceleration unit 115.
The housing in which the final reduction unit 115 and the parking gear 119 are accommodated is referred to as the gear housing 3, and the housing in which the second pulley 113 is accommodated is referred to as the pulley housing 5.
The transmission 103 is configured by the clutch 103, the torque converter 105, the forward / reverse switching mechanism 107, the first pulley 109, the drive chain 111, the second pulley 113, the final reduction gear 115, the gear housing 3, the pulley housing 5, and the like. Composed.
Since the gear housing 3 and the pulley housing 5 are for housing the transmission mechanism, lubricating oil is stored in the lower part thereof.
Further, a lower portion of the gear housing 3 and the pulley housing 5 is formed with a lubricating oil suction port for sucking and circulating the stored lubricating oil.
Such an automobile having a transmission mechanism may be located on a slope, or may be accelerated or decelerated. In such a case, the lubricating oil stored in the gear housing 3 is biased to some side in the gear housing 3. The same applies to the pulley housing 5.
Thus, if the lubricating oil is biased, the lubricating oil is lost in the lubricating oil suction port portion, and there is a possibility that an air sucking state in which air is sucked may occur.
This air sucking state is prevented by using a partition structure 1 as described later in this embodiment.

The gear housing 3 and the pulley housing 5 are separated by a wall portion 7. A communication hole 7a (see FIG. 4) for communicating the gear housing 3 and the pulley housing 5 is formed in the wall portion 7.
The parking rod 9 passes from the pulley housing 5 to the gear housing 3 through the communication hole 7a.
When the user manually moves the parking lever or the like, the parking rod 9 moves.
Here, the parking rod 9 not only moves in the vertical direction with respect to the wall 7, but also moves in the horizontal direction with respect to the wall 7. Here, the movement in the vertical direction with respect to the wall portion 7 is a movement in the left-right direction in FIG. 1, and the movement in the horizontal direction with respect to the wall portion 7 is a movement in the vertical direction in FIG. It is.

  FIG. 2 is an explanatory diagram of the arrangement of the parking rod 9.

As shown in FIG. 2, the parking rod 9 is disposed over the pulley housing 5 and the gear housing 3. The parking rod 9 passes through a communication hole 7 a provided in the wall portion 7 between the pulley housing 5 and the gear housing 3.
The parking rod 9 is connected to a manual plate 11 disposed in the pulley housing 5 in a freely swingable state.
The manual plate 11 rotates in the direction of the arrow in FIG. 2 (clockwise) when the parking lever is pulled by the user.
A parking mechanism 15 disposed in the gear housing 3 is provided at the end position of the parking rod opposite to the side connected to the manual plate 11. The parking rod 9 is held by the parking mechanism 15.
Specifically, the parking rod 9 is pinched (held) at a certain position by being sandwiched between a parking support 17 that does not move up and down and a parking pole 19 that moves up and down in FIG. The holding method will be described later).
In other words, the parking rod 9 is supported by a freely connectable connection with the manual plate 11 and a clamp that can be slid but is held at a fixed position.
A slide cam 13 is disposed in a portion of the parking rod 9 held by the parking mechanism 15.

  FIG. 3 is an explanatory view of the parking mechanism 15 from the III direction of FIG.

As shown in FIG. 3, the slide cam 13 connected to the parking rod 9 is sandwiched between a parking support 17 and a parking pole 19.
Here, the parking support 17 is structured not to move. The parking pole 19 is rotatable about the parking pole shaft 19c, and is biased by a spring or the like counterclockwise (in the direction of the arrow in FIG. 3).
For this reason, the parking rod 9 is clamped by the parking support 17 and the parking pole 19 and the position thereof is maintained.
However, the parking rod 9 is only supported without being fixed to the parking support 17, and the parking rod 9 is not fixed to the parking pole 19 and is only pressed by a spring force. To the parking pole 19 side (see also FIG. 4 for the following description).
When the parking rod 9 moves to the parking side in the axial direction, the slide cam 13 pushes up the parking pole 19 because the outer shape of the slide cam 13 has a substantially conical shape.
Then, by pushing up the parking pole 19, the parking pole 19 can be rotated in the clockwise direction (the direction opposite to the direction of the arrow in FIG. 3) about the parking pole shaft 19c.
When the parking pole 19 rotates clockwise about the parking pole shaft 19c, the engaging portion 19a formed on the parking pole 19 is engaged with the gear portion 119a of the parking gear 119.
When the engaging portion 19a is engaged with the gear portion 119a, the parking gear 119 and the gear of the final reduction portion 115 engaged with the parking gear 119 cannot be rotated.
As a result, the wheel 117 can be prevented from rotating, and the vehicle or the like can be brought into a parking state.

FIG. 4 is an explanatory diagram of the partition structure of the present embodiment.
FIG. 5 is a comparative example with the partition structure of this embodiment.

In the present embodiment, in the non-parking state, the parking rod 9 and the parking mechanism 15 are in the state shown in FIG.
As shown in FIG. 4, the parking mechanism 15 includes a slide cam 13, a parking support 17, a parking pole 19, a slide cam side spring 21, and a slide cam biasing pedestal 23.

The slide cam biasing pedestal 23 is coupled to the parking rod 9.
The slide cam 13 is urged in the parking direction by a slide cam side spring 21.
The slide cam 13 has a truncated cone shape at the parking direction position, and has a cylindrical shape at the non-parking direction position. The slide cam 13 has a cylindrical hollow space through which the parking rod 9 passes.
A frustoconical side surface 13 a formed at the parking direction position of the slide cam 13 is in contact with the pole slope 19 b of the parking pole 19 and the support slope 17 a of the parking support 17.
The pole slope 19b and the support slope 17a are inclined so as to approach the parking rod 9 as they go in the parking direction.

The parking support 17 is configured not to move relatively in the gear housing 3.
On the other hand, the parking pole 19 is formed to be movable in the normal direction of the central axis of the parking rod 9.

A partition plate biasing pedestal 27 for biasing the partition plate 25 by the partition plate side spring 29 is formed on the pulley housing side of the parking rod 9.
The partition plate 25 has a shape sufficiently larger than the shape of the hole of the communication hole 7 a of the wall portion 7. Specifically, for example, if the through hole is circular, it has a circular shape having a larger diameter than the circle. But it is not the meaning which limits the shape of the communicating hole 7a, and the shape of the partition plate 25 to this. For example, even if the through hole has a circular shape, it goes without saying that the partition plate 25 may have a quadrangular shape or the like.
That is, the shape of the partition plate 25 may be any shape as long as the partition plate 25 can cover the communication hole 7a even when the parking rod 9 moves parallel to the wall surface of the wall portion 7. It may be a shape.

A partition plate through hole 25 a for allowing the parking rod 9 to pass therethrough is formed near the center of the partition plate 25.
It is appropriate that the partition plate through hole 25a is as small as possible in order to prevent the lubricant from moving to the adjacent housing. However, if the partition plate through-hole 25a is too small, the parking rod 9 moves not only in the axial direction but also in the direction perpendicular to the axial direction, so the partition plate through-hole 25a may come into contact with the parking rod 9. There is. When the partition plate through hole 25a comes into contact with the parking rod 9 and moves together with the parking rod 9 in the parking direction, the partition plate 25 cannot block the communication hole 7a. Therefore, it is necessary to set an appropriate hole diameter.
In order to prevent the lubricating oil from moving between the partition plate through hole 25a and the parking rod 9 to the adjacent housing, in order to further eliminate the gap between the partition plate through hole 25a and the parking rod 9. An O-ring or the like may be used.

Since the partition plate 25 is urged by the partition plate-side spring 29, the partition plate 25 comes into pressure contact with the wall surface of the wall portion 7 around the communication hole 7a.
Here, in order to prevent the lubricating oil from moving between the partition plate 25 and the wall surface of the wall portion 7 to the adjacent housing, the wall 7 side surface of the partition plate 25, the partition plate of the wall portion 7 is used. A packing or the like may be provided on one or both of the 25 side surfaces.

In the present embodiment, as shown in FIG. 4, the partition structure using the partition plate 25 and the like is provided. However, in FIG. 5 which is a comparative example, such a partition structure is not provided, and therefore the pulley housing 5 is lubricated. The oil L2 moves to the gear housing 3 through the communication hole 7a.
This may cause problems such as air sucking.
On the other hand, in the present embodiment, since the partition plate 25 that substantially closes the communication hole 7a is provided and the partition plate 25 is pressed against the wall portion 7, movement of the lubricating oil can be prevented. .

When the parking lever or the like is pulled and the vehicle is in the parking state, the parking rod 9 and the parking mechanism 15 are in the state shown in FIG.
At this time, the parking rod 9 also moves in the parking direction, but simultaneously moves in a direction perpendicular to the axial direction of the parking rod 9 (horizontal with respect to the wall surface of the wall portion 7) (FIG. 4B). (See arrow inside).
Due to the movement of the parking rod 9 in the parking direction, the partition plate biasing pedestal portion 27 also moves in the parking direction. On the other hand, since the partition plate 25 does not move, the partition plate-side spring 29 extends. Even in this state, the partition plate side spring 29 is designed so that the partition plate 25 can be pressed against the wall surface of the wall portion 7. Therefore, the partition plate 25 has an effect of preventing the lubricating oil from moving even in the parking state.
Further, since the parking rod 9 moves both in the parking direction and in the direction perpendicular to the axial direction of the parking rod 9, a structure for generally closing the lubricating oil (simply reducing the communication hole 7a, etc.) However, the movement of the lubricating oil cannot be prevented, but this is possible in the partition structure 1 of the present embodiment.

Further, when the user performs parking, there is a case in which the parking lever or the like is not sufficiently pulled (moved) and the parking state is not achieved.
In the present embodiment, in order to prevent the problem of not being in the parking state as much as possible, a biasing force in the parking direction is applied to the parking rod 9 by the partition plate side spring 29.
That is, in the present embodiment, there is an effect that the parking lever or the like can be pulled (moved) and parking can be surely performed to some extent.
However, the direction, method, position, mechanism, and the like for energizing the partition plate 25 are not limited to this. For example, in FIG. 4, the partition structure 1 is formed at the position in the parking direction. The partition structure 1 may be formed.

<Second Embodiment>
FIG. 6 is an explanatory diagram of the second embodiment.

As shown in FIG. 6, it is possible to press the partition plate 25 against the wall surface of the wall portion 7 not by the force of the partition plate side spring 29 to be extended but by the force of compression.
Specifically, the partition plate biasing pedestal portion 27 is provided with a pedestal portion through hole 27a, and the partition plate 25 is provided with a partition plate through hole 25a.
A pedestal portion through spring 29 a is provided on the partition plate biasing pedestal portion 27 side of the partition plate side spring 29, and a partition plate through spring 29 b is provided on the partition plate 25 side of the partition plate side spring 29.

The pedestal portion through spring 29 a passes through the pedestal portion through hole 27 a and is located on the side opposite to the partition plate side spring 29 of the partition plate biasing pedestal portion 27.
The partition plate through spring 29b passes through the partition plate through hole 25a and is located on the opposite side of the partition plate 25 from the partition plate side spring 29.
In this state, the partition plate side spring 29 is in an extended state rather than its natural length.
For this reason, the partition plate 25 is in pressure contact with the side surface of the wall portion 7.

As in the first embodiment, the partition structure 1 may be provided at a position opposite to that in FIG. 6 (non-parking direction) in order to facilitate the parking state.
In particular, the biasing means is not necessarily the partition plate-side spring 29, and may be rubber or the like, for example.

  Further, the present invention is not limited to the above embodiment, and can be applied to various partition structures.

<Configuration and Effect of Embodiment>
The partition structure 1 of the present embodiment passes through a communication hole 7 a formed in the gear housing 3, the pulley housing 5, and the wall portion 7 that separates the gear housing 3 and the pulley housing 5. A parking rod 9 that is movable in the vertical direction and parallel direction , and a partition plate 25 that presses against the wall portion 7 around the communication hole 7a and closes the communication hole 7a. The gear housing 3 and the pulley housing 5 In at least one of these, lubricating oil is stored in the lower portion, and the partition plate 25 is pressed against the wall portion 7 around the communication hole 7a by a partition plate-side spring 29 connected to the parking rod 9.
Since it has such a configuration, the communication hole 7a for the parking rod 9 that is movable in the vertical direction and the parallel direction with respect to the wall surface of the wall portion 7 is substantially blocked while having a simple structure. Can do.
As a result, the lubricating oil stored in each housing is not unevenly distributed in one housing, and air suction can be prevented.

The gear housing 3 and the pulley housing 5 are housings for accommodating a transmission mechanism that transmits power from an automobile engine.
Since it has such a structure, it becomes possible to prevent the bias of the lubricating oil of the transmission mechanism of an automobile, which often requires a penetrating member.

The gear housing 3 is a housing for storing the parking gear 119, the parking rod 9 is for fixing the parking gear, and the fluid stored in at least one of the gear housing 3 and the pulley housing 5 is lubricating oil. It is.
Since it has such a structure, it becomes possible to prevent the bias of the lubricating oil of the transmission mechanism of an automobile, which often requires a penetrating member.

A partition plate through hole 25a is formed in the partition plate 25, and the parking rod 9 passes through the partition plate through hole 25a.
Since it has such a structure, it becomes possible to let the parking rod 9 penetrate the partition plate through hole 25a with a simple structure.

The partition plate-side spring 29 urges the parking rod in the direction in which the parking rod moves when the parking rod is brought into the parking state by a reaction force that presses the partition plate 25.
Since it has such a configuration, it can be ensured by the parking state.

The transmission TM uses the partition structure 1 of the first embodiment and the second embodiment.
Because of having such a structure, the communication hole 7a for the parking rod 9 that is movable in the vertical direction and the parallel direction with respect to the wall surface of the wall 7 is substantially closed while the transmission TM has a simple structure. can do.
As a result, the lubricating oil stored in each housing is not unevenly distributed in one housing, and air suction can be prevented.
When used in the transmission TM as compared with the partition structure 1, the lubricating oil must be reliably supplied to the transmission TM, so that the effect is particularly high.

<Definition etc.>
An example of the first housing in the present invention is the gear housing 3. An example of the second housing of the present invention is a pulley housing 5. However, the first housing and the second housing are not limited to this, and any rod can be used as long as the rod passes through the wall separating the two housings and fluid is stored in at least one of the lower portions. It may be something like this. Further, the first housing and the second housing need not be only two housings, and when there are three housings, they may be two of them. Furthermore, three or more housings may be used.
An example of the fluid of the present invention is a lubricating oil.
An example of the rod of the present invention is a parking rod 9. Here, the rod of the present invention may be any type of rod as long as it can move in a direction perpendicular to and parallel to the wall.

1 Partition structure 3 Gear housing (first housing)
5 Pulley housing (second housing)
7 Wall portion 7a Communication hole 9 Parking rod 15 Parking mechanism 25 Partition plate 25a Partition plate through hole 27 Partition plate biasing pedestal portion 29 Partition plate side spring (biasing means)
L2 lubricating oil

Claims (6)

A first housing;
A second housing;
A rod that passes through a communication hole formed in a wall portion separating the first housing and the second housing and is movable in a vertical direction and a parallel direction with respect to a wall surface of the wall portion;
A partition plate for closing the communication hole,
Liquid is stored in the lower part of at least one of the first housing and the second housing,
The partition plate has a shape that can cover the communication hole even when movement in a parallel direction occurs with respect to the wall surface of the wall portion of the rod,
The partition plate is always in pressure contact with the wall portion around the communication hole within a movable range of the rod by an urging means connected to the rod. The partition structure according to claim 1, wherein the first housing and the second housing are housings for accommodating a transmission mechanism that transmits power from an engine of an automobile. The first housing is a housing that houses a parking gear;
The rod is a parking rod for fixing a parking gear,
The partition structure according to claim 2, wherein the liquid stored in the lower part of at least one of the first housing and the second housing is lubricating oil. A through hole is formed in the partition plate,
The partition structure according to claim 3, wherein the parking rod passes through the through hole. The biasing means is
The partition structure according to any one of claims 3 to 4, wherein the parking rod is urged in a direction in which the parking rod moves when the parking rod is parked by a reaction force that presses the partition plate.   A transmission using the partition structure according to any one of claims 1 to 5.

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