JP2586346Y2 - Transmission lubrication system - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a transmission lubrication device, and more particularly, to a transmission lubrication device capable of lubricating movable parts in both a transmission case inner space and an adapter case inner space. About.

[Prior art] Generally, in lubrication of a transmission, lubricating oil jumped up by gears in a transmission case is received by an oil gutter, and the oil gutter guides the lubricating oil to a movable portion in the transmission case and an adapter case. This is performed by dropping this on a movable part.

Conventional transmission lubrication system
In the lubricating device disclosed in US Pat. No. 1,168,057, as shown in FIGS. 5 (a) and 5 (b), a resin oil gutter 6 having two oil passages 61, 62 independently formed in a transmission case. The oil passage 61 is used for lubricating the respective movable parts in the transmission case, and the other oil passage 62 is used for lubricating the respective movable parts in the extension case (adapter case).

[Problems to be Solved by the Invention] In the two oil gutters of the above-mentioned publication, oil jumped up by gears is received by respective oil passages and supplied to respective movable parts in the transmission case and the adapter case, respectively. Therefore, the amount of oil that is flipped up by gears and received by the respective oil passages and supplied is not necessarily sufficient for the movable portion of the space in each case.

Further, in the conventional oil gutter, as described above, the oil flowing out of the oil passage is merely poured onto movable parts such as gears.
This oil is immediately scattered by the centrifugal force of the shaft and gear rotating at high speed, and there has been a problem that a sufficient amount of lubricating oil cannot be obtained for each movable part. In particular, in the case of a counter gear on a counter shaft, which is often provided at the lowermost stage of the transmission case, not only a large amount of dripping from the top cannot be expected for a gear with a small gear diameter due to a high gear ratio. However, because of the small diameter, the oil in the sump could not be sprung up from itself, resulting in insufficient lubrication.

In order to solve this problem, for example, if an amount of oil enough to immerse all gears is introduced, not only does the weight of the vehicle increase, but also this large amount of lubricating oil causes a large resistance to the rotating parts, and the amount of heat generated is reduced. The temperature rises too much,
Another problem that energy loss occurs may occur.

Accordingly, the present invention has been made in view of the above problems, and provides a transmission lubrication device having an oil gutter capable of supplying a lubricating oil amount at an appropriate ratio to movable parts in respective spaces of a transmission case and an adapter case. With the goal.

It is a further object of the present invention to provide a transmission lubrication device that can lubricate the gears, which are the movable parts of the transmission, as effectively as possible with a simple structure without increasing the amount of oil.

[Means for solving the problem]

An object of the present invention is to provide an oil receiver for receiving oil jumped up by a gear of a transmission, and an oil passage connected to the oil receiver and having a bottom surface inclined downward from an upstream side to a downstream side. And common oil provided at the downstream end of the oil passage and received by the oil receiver,
A partition plate inside the oil passage for diverting the oil into the first oil passage and the second oil passage that guides the oil into the adapter case; an opening provided at an upper portion of a downstream end of the first oil passage; An oil supply gutter provided with an oil reservoir provided at a lower portion of the portion and a rib plate provided at a lower end of the opening, and an oil supply gutter provided along a peripheral tooth surface of one gear in the transmission case. A lubricating device for a transmission, wherein a bottom surface of one end is located above the center of the gear and below the rib plate, and at least one oil immersion gutter for immersing the gear in oil is provided. Achieved.

Preferably, the partition plate is manufactured separately from the oil supply gutter main body, and two oil passages are formed according to the ratio of the amount of lubricating oil required for the drive units in both the transmission case space and the adapter case space. Install so as to divide into oil passages.

[Operation] The lubricating oil for the movable parts in both the transmission case and the adapter case received by the oil receiver is supplied to the respective first and second oil passages separated by the partition plate according to an appropriate oil amount ratio. It shunts and flows, lubricating the moving parts in each space.

The oil immersion gutter is capable of storing a sufficient amount of oil for lubricating the gear and directly supplying the oil, despite slight changes in the oil supply amount.

[Example] An example of the present invention will be described with reference to the drawings.

FIG. 1 is a partial plan view showing the structure of a transmission lubricating apparatus according to an embodiment of the present invention in a transmission case, FIG. 2 is a view taken along the line II-II of FIG.
3 and 4 are III-III and IV-IV of FIG. 2, respectively.
It is an arrow view.

In FIG. 1, the counter shaft 5 is rotatably supported by an intermediate plate 8 which separates an internal space A of a transmission case 6 and an internal space B of an adapter case 7 via a ball bearing (not shown). Counter gears 3 and 4 are integrally arranged on the counter shaft 5 so as to rotate.

The oil supply gutter 1 is connected to an oil receiver 11 and a second oil passage 12a and a second oil passage 12a following the oil receiver 11 by a partition plate 13.
b, and is fixedly supported by the side of the transmission case 6 and the side of the intermediate plate 8. The lower space in the transmission case 6 is filled with lubricating oil to a certain depth and serves as an oil sump A 'for immersing the larger lower portion of the counter gear 4 of the counter shaft 5 ( FIG. 2).

The oil receiver 11 and the oil passage 12 correspond to the oil passage 12 shown in FIG.
As shown in, the side wall portion and the upper edge portion of the partition plate 13 are arranged almost horizontally, but the bottom surface is attached with an inclination from the upstream side on the right side to the downstream side on the left side in the figure. . The oil receiver 11 and the oil passage 12 are manufactured integrally, and one flat plate is formed by pressing, and the partition plate 13 is spot-welded to the bottom surface of the oil passage 12. As shown in FIG. 1, the oil passage 12 has a curved side wall on the side of the second oil passage 12b, and has an advantageous shape for allowing oil to flow into the first oil passage as much as possible.

In FIG. 1, the space A in the transmission case is shown.
The first oil passage 12a for supplying oil to the movable portion of the vehicle has an opening 14a in the upper portion on the downstream side thereof and a rib plate disposed subsequent to the opening 14a.
Has 15 Further, at the downstream end of the first oil passage 12a, a lower portion of the opening 14a is a weir portion, and the lubricating oil does not flow out of the opening 14a until the lubricating oil is filled therein. Further, a second oil passage 12b for introducing lubricating oil into a movable portion of the adapter case internal space B disposed on the rear side of the transmission case internal space A is terminated at a position penetrating the intermediate plate 8. The outlet 14b is opened in the space inside the adapter case.

As shown in FIG. 2, the opening 1 of the first oil passage 12a
One end 21 of the oil immersion gutter 2 for receiving the lubricating oil falling from the rib plate 15 is disposed immediately below the rib plate 15 and 4a.
This one end 21 is located above the center of the counter gear 3 (on the meshing portion side). The oil immersion gutter 2 is arranged as a substantially semicircular open groove whose central portion is convex downward when viewed in the counter axial direction, and is arranged immediately below the counter gear 2. Since the oil immersion gutter 2 uses the intermediate plate 8 as one side wall as shown in FIG. 4, only a bottom surface and one side surface are sufficient as members for the oil immersion gutter 2, and this member is used. Are formed in a flat plate shape having an L-shaped cross section. The counter gear 3 is disposed in the oil immersion gutter 2 between the intermediate plate 8 and the wall of the L-shaped member of the oil immersion gutter 2 at the tooth surface portion at the lower end thereof. Also,
As shown in FIG. 2, the other end 23 of the oil immersion gutter 2 on the side opposite to the inflow side.
Ends at a position lower than the end on the inflow side. Also,
As shown in FIG. 2, the bottom surface of the inflow side end of the oil immersion gutter 2 is located above the center of the gear (counter gear) and below the rib plate 15, and the distance between the gear and the meshing portion of the gear is shortened. ing.

With the above configuration, in the transmission lubrication device of the present embodiment, oil is introduced and lubricated into each movable portion of the transmission case space A and the adapter case space B as follows.

The lubricating oil introduced into the oil sump A 'in the lower space in the transmission case 6 is splashed up and scattered by the counter gear 4 whose lower end has reached the oil sump A', and a part thereof has a tooth surface and the like. The oil is supplied to the oil receiver 11 while the other parts are used for lubrication of the movable parts that require lubrication.

The lubricating oil received by the oil receiver 11 flows in the direction of the oil passage 12 along the gradient, and is separated by the partition plate 13 into a first oil passage 12a for oil to be lubricated in the movable portion of the space A in the transmission case. And a second oil passage 12b for oil used for lubrication in the movable portion of the adapter case internal space B. The oil that has flowed into the second oil passage 12b penetrates the intermediate plate 8, is introduced into the adapter case through the outlet 14b, lubricates the movable part of the space B in the adapter case, and then lubricates the space in the adapter case. B returns to the oil sump A 'in the lower part of the space A in the transmission case again through the small hole 8a formed in the intermediate plate 8.

The lubricating oil flowing into the first oil passage 12a is dammed by a weir formed at the end of the oil passage, and is guided to the rib plate 15 via the upper opening 14a after the weir is filled with oil. Rib plate 15
The oil that has fallen from the oil immersion gutter 2 as shown in FIG.
And flows into a central part 22 for lubricating the tooth surface of the counter gear 3. A part of the oil in the oil immersion gutter 2 is flipped up by the centrifugal force caused by the rotation of the counter gear 3 toward the end 21 on the inflow side to lubricate other movable parts, while another part of the oil is used. Is oil immersion gutter 2
From the other end 23 and returns to the lower oil sump A 'in the transmission case again.

In the lubricating device of this embodiment, an outlet 14b provided in the second oil passage 12b and opening into the space B in the adapter case is provided with an opening 14 serving as an oil outlet to the space A in the transmission case.
Although it is located at a position lower than a and the outflow area itself of the outlet is formed relatively large, the partition plate 13 that divides the oil passage into two is the amount of oil that flows from the oil receiver 11 into the first oil passage 12a. Are arranged in consideration of the mounting position and the angle so as to increase the size. That is, the lubricating oil is separated by a partition plate arranged to appropriately separate the amount flowing into the first oil passage and the amount flowing into the second oil passage. After flowing out of the opening 14a after being accumulated in the weir portion of the oil passage 12a, the oil supply flowing through both oil passages and being introduced into the movable portions in both spaces can be balanced.

Also, in the lubricating apparatus of the present embodiment, the oil supply gutter is manufactured as a flat plate bent because the oil passage 12 of the oil supply gutter and the partition plate 13 are manufactured separately and then retrofitted by spot welding. Not only is the structure simple and easy to manufacture, but it can be adapted to many types of transmission by adjusting the mounting position of the partition plate.

[Effect of the Invention] In the present invention, the oil supply gutter is divided into an oil receiver and an oil passage, and the common oil received by the oil receiver is divided into a first oil passage and a second oil passage by a partition plate of the oil passage. With the adoption of, by selecting the mounting position of the partition plate, it became possible to properly distribute the lubricating oil to the movable parts in both the space inside the transmission case and the space inside the adapter case. Nevertheless, it was possible to provide a lubricating device for a transmission capable of securing a supply amount of lubricating oil necessary for each movable portion.

In addition, by installing one end on the inflow side of the oil immersion gutter close to the meshing part of the gears, it is possible to lubricate the necessary moving parts without increasing the total amount of lubricating oil, while increasing the stirring resistance and increasing Thus, it is possible to provide a transmission lubrication device capable of avoiding the temperature rise and the loss caused by the transmission.

[Brief description of the drawings]

FIG. 1 is a plan view showing a part of the structure of a transmission having a transmission lubricating device according to an embodiment of the present invention, FIG. 2 is a view taken in the direction of arrows II-II in FIG. 1, FIG. FIG. 5 is a diagram showing the structure of a conventional transmission lubrication device, and FIG. 5 (a) is a cross-sectional view of the inside of the transmission, and FIG. Is a plan view of an oil gutter. (Description of Signs) 1 ... Oil supply gutter, 2 ... Oil immersion gutter 3,4 ... Counter gear 5 ... Counter shaft 6 ... Transmission case 7 ... Adapter case 8 ... Intermediate plate 11 ... Oil receiver, 12 ... Oil passage 12a … First oil passage, 12b… Second oil passage 13… Partition plate, 14a… Opening 14b… Outlet, 15… Rib plate

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16H 57/04

Claims (1)

(57) [Scope of request for utility model registration] 1. An oil receiver for receiving oil jumped up by a gear of a transmission, an oil passage disposed subsequent to the oil receiver and having a bottom surface inclined downward from an upstream side to a downstream side. Provided at the downstream end of the oil passage, a common oil received by the oil receiver, a partition plate inside the oil passage that divides the first oil passage and a second oil passage that guides the oil into the adapter case, An oil supply comprising: an opening provided at an upper portion of a downstream end of the first oil passage; an oil reservoir provided at a lower portion of the downstream end; and a rib plate provided at a lower end of the opening. A gutter, provided along the peripheral tooth surface of one gear in the transmission case, the bottom surface of one end thereof being located above the center of the gear and below the rib plate, and immersing the gear in oil. Do at least One of the lubricating device of the transmission, wherein the oil Hitatoi, that was provided.