JPS60139973A - Lubricating apparatus for extension housing - Google Patents

Abstract

PURPOSE:To obtain the good lubrication with the simple constitution by supplying lubricating oil branched from a line-pressure oil passage through a pipe means onto the bearing part of an extension housing an devising the connection structure of the pipe means. CONSTITUTION:The captioned lubricating apparatus 1 for feeding the stable amount of lubricating oil into the bearing part 5 of the extension housing 4 of an automatic speed change gear 2 is installed in a transmission case 22 and is equipped with a line-pressure oil passage 12 for feeding the line pressure into a hydraulic servo not shown in the figure of a speed change gear 21 through an oil chamber 11 from a valve body 23. Further, the captioned apparatus is equipped with a lubricating-oil taking-out passage 13 which is branched midway from the oil passage 12 and has an orifice 13, and is equipped with a pipe 18 which connects the oil passage 13 with the oil hole 26A of a bearing 26. Further, the edge part of the taking-out oil passage 13 side of the pipe 18 is installed through a packing 16 onto a seal seat 15 installed onto the housing 4 side of the joint surface 10 between the case 22 and the housing 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field E] The present invention relates to the F4 of an extension housing mounted on an extension housing bearing part of an automatic transmission.
Regarding sliding devices.

[Conventional technology vFi]' In the 1x tension housing bearing part that constitutes the output shaft part of the automatic transmission case, necessary parts such as the bearing that supports the output shaft and the oil seal @nWJ are installed. However, since it is located at the rear end of the automatic transmission, the supply of l1I lubricant to the lubricated object is restricted, resulting in insufficient lubricant supply, preventing smooth rotation of the output shaft, and causing output loss. I'm letting you do it. Also, r4m to the object to be lubricated.
Lack of oil supply increases heat generation due to friction, which leads to deterioration of the lubricated object and deterioration of other parts due to deterioration of the lubricated object.1. The problem arises. For this reason, oil receivers have been installed on fixed parts such as the 1st station housing in the past.
Then, lll is ejected from the radial hole formed in the output shaft.
A method has been adopted in which lubricating oil is received by the oil receiver and supplied to the bearing, but since the oil receiver is static, centrifugal force cannot be used effectively, and the radial hole in the output shaft There are also drawbacks such as the formation position of the oil pan and the position of the oil pan are restricted, and when the object to be lubricated is large, the installation position of the oil pan must be set appropriately.

[Object of the Invention] The object of the present invention is to provide a lubricating device for a single extension housing that can be reliably removed using simple 1113 combinations and that can uniformly supply lubricating oil to the bearing part. It is in.

[Structure of the Invention] The 11111 sliding device of the 1st suspension housing of the present invention can be used for speed change of a transmission case, a gear foundation II structure provided in the transmission case, a belt type transmission mechanism, a planetary gear rapid speed mechanism, etc. Mechanism and the above I.
It is a 311m automatic transmission 1x extension housing with a valve body of a hydraulic control device fastened to the lower surface of the transmission case, and an extension housing connected to the transmission case, and a stage numbered in the coke range housing. In the 1lkl sliding device of the 9-extension housing, which includes an output shaft of the transmission mechanism, a sleeve spline-fitted to the output shaft and inserted through a bearing into a bearing hole of the extension housing via a bearing, and a yoke, the transmission case An internal seal inserted into a stepped seal seat on one side of the joint surface with the extension housing, a lubricating oil outlet passage connecting the valve body and the seal seat, and a marine extension housing. The bearing is disposed within the housing, one end of which is fitted into the seal, and the other end of which is a pipe that opens into the bearing.

[Effects of the Invention] With the above configuration, the extension housing [11111] of the present invention has the following effects.

b) It can be installed reliably with simple assembly work, and high hydraulic lubricating oil can be uniformly supplied to the bearing.

Since the pipe is connected to the bearing part, the output shaft rotates smoothly, suppressing loss of engine output that drives the output shaft, and reducing engine fuel consumption.

C) It is possible to effectively prevent deterioration of each member due to insufficient lubrication of the bearing and deterioration of the bearing.

[Embodiments] A lubricating device for an extension housing according to the present invention will be explained based on two embodiments shown in the drawings.

In this embodiment, the extension housing of the present invention is connected to the lower surface of the transmission case 22, the transmission case 22, and the valve body 23 is connected to the transmission case 22. It is assembled into an automatic transmission 2 for a vehicle with four forward speeds and one reverse speed, including an overdrive (OD) consisting of a connected extension housing (hereinafter referred to as the housing) 4 and an output shaft 3 inside the housing 4. .

111**mi of the extension housing is installed in the case 22 of the above-mentioned 1 to lance fitting, and is a hydraulic nervo (not shown) of the transmission 21 that receives line pressure from the valve body 23 via the oil chamber 11. Drilling or casting is performed on the wall surface 22a of the transmission case 22 so that the line pressure generating oil passage 12 is branched between the Pal 1 body 23 and the oil chamber 11. A bearing lubricating oil outlet passage 13 formed by drawing out the bearing lubricating oil outlet passage 13, an A refrigerator 14 which is a throttle that is installed in the bearing lubricating oil outlet passage 13 and controls the outflow by a throttling action, and the bearing lubricating oil Prevents lubricating oil from leaking from the oil outlet path 13 and protects the transmission case 22 and housing 4.
A seal seat 1 provided in the housing 4 on the joint surface 10 of
5, the connecting part 11 having a packing 16 which is a TC cylindrical seal is fitted at one 15 end 18A, and the other end 18B which is open to the bearing part 5 is formed. It consists of an output shaft and a pipe 18 arranged in a curved manner, bypassing the governor valve or electronic vehicle speed sensor mounted on the output shaft, and is stabilized by the bearing part 5 of the tension housing. We are supplying sword lubricating oil■.

The automatic transmission 2 for a vehicle includes a torque converter housing (not shown) containing a torque converter, an A-bar drive (OD) device, and an input shaft of the automatic transmission, an intermediate shaft 20 connected to the input shaft, and a planetary gear. Transmission device 2 with 3 forward speeds and 1 reverse speed, equipped with a speed change mechanism, clutch, and brake
1 and a transmission case 22 containing the l-
The hydraulic system is fastened to the lower surface of the transmission case 22 and contains valves with various functions, including a shift valve that switches the oil path in response to a shift signal, a throttle valve that outputs a shift signal, and an oil pump that is a source of hydraulic pressure. The valve body 23 of the control device 24, the oil pan 25 in which the hydraulic control device 24 is built-in, the output shaft 3 connected to the rear end of the transmission case 22 by a bolt (not shown) and connected to the intermediate shaft 20, and the output shaft A governor valve 2 is attached to the output shaft 3 and generates a governor pressure corresponding to the rotational speed of the output shaft 3 and the vehicle speed.
7b, and the housing 4 is spline-fitted with the output shaft 3 through a bearing 26.
The sleeve yoke 28 is supported by the bearing portion 5 of the sleeve yoke 28.

The bearing portion 5 of the housing 4 is located on the inner peripheral side 5 at the tip end of an oil sump sleeve 51 with the bearing portion 5 at the lower portion shown in the drawing protruding to the left in the drawing.
2, an oil sump 54 surrounded by an oil sump 141153 attached to the bearing 26, the sleeve yoke 28, and an oil sump weir 53, is provided on the inner peripheral side 5 of the protrusion 55 that protrudes to the right in the figure.
6 is equipped with an oil seal 57 that prevents foreign matter from entering the output shaft 3 from the outside and leakage of lubricating oil, and a dust cover 59 that prevents foreign matter from entering the oil seal 57 from the outside is attached to the outer peripheral side 58. I am wearing it.

Further, an oil passage hole 59A is formed in the upper part of the bearing portion 5 in the drawing, and an oil volume 26A is formed in the bearing 26.

In this configuration, the hydraulic oil (f
lI lubricating oil) passes through the bearing lubricating oil outlet oil passage 13 and into the pipe 1 while the oil amount is controlled by the A lubricant 14.
Enter 8. Zarani fv] Lubricating oil (Yo pipe 18 other end 1
8BJ, is supplied to the jet bearing part ;), and the oil passage hole 5OA
The lubricating oil that has roughly lubricated the oil seal 57 and the bearing 26 is supplied to the oil reservoir 54 after lubricating the sleeve yoke 28 and the output shaft 3. Further, since the pipe 18 is disposed around the outer periphery of the electronic vehicle speed sensor 27a, it is also possible to provide a hole in the pipe 18 and lubricate a speedometer drive gear (not shown) through the hole. As a result, the -C output shaft 3 rotates smoothly, suppressing the loss of engine output that drives the output shaft 3,
Engine fuel consumption can be reduced.

In this embodiment, the bearing lubricating oil extraction oil passage 13 is formed in the middle of the line pressure generation oil passage 12 by drilling or casting, but the bearing lubricating oil extraction oil passage 13 is formed in the valve body 23 by drilling or casting. You may do so.

Further, although the orifice 14 is provided in the bearing full lubricant extraction oil passage 13, it may also be provided in the pipe 18.

[Brief explanation of drawings]

Figure 1 shows the second tension housing of the present invention.
! FIG. 2 is a front view of the tension housing lubrication device of the present invention; FIG.
The figure shows 1lltl of the extension housing of the present invention.
This figure shows the bearing lubricating oil passage of lR[. In the diagram: 1... Extension housing lubrication device 2... Vehicle automatic transmission 3... Output shaft 4...
・Extension housing 5...Bearing part 10
...Joint surface 12...Line pressure generation oil path 13...
・Bearing lubricating oil extraction oil path 14... Orifice 15.
... Seal seat 16 ... Packing 18 ... Pump 22 ... Transmission case 23 ... Valve body 24 ... Hydraulic control device 26 ... Bearing
28... Sleeve York agent Kenji Ishiguro 11-

Claims (1)

[Scope of Claims] 1)] An extension housing for an automatic transmission including a transmission case, a transmission mechanism provided in the transmission case, and a valve body of a hydraulic control device fastened to the lower surface of the transmission case, One end is connected to the transmission case, and the other end is a bearing part, and the extension housing is disposed within the extension housing and is rotatably supported in a bearing hole provided in the bearing part of the extension housing. In a lubricating device for a transmission mechanism consisting of an output shaft of a transmission mechanism, and a sleeve yoke spline-fitted to the output shaft and inserted into a bearing hole of the extension housing via a bearing, the transmission mechanism case and the extension a cylindrical seal inserted into a seal seat provided on one side of the joint surface with the housing, and a lubricating oil extraction oil passage provided in the 1-transmission case and connecting the valve body and the seal seat; - Lubrication of an extension housing characterized by comprising a pipe disposed within the Kusten Sheen housing, one end of which is fitted into the seal, and the other end of which is open to the bearing section [1°2) The pipe is arranged in a curved manner so as to bypass the output shaft in the extension housing, a governor valve attached to the output shaft, or an electronic vehicle speed sensor. 8 of the extension housing! I-slide device.