JPS5834267A - Oil pump assembly construction for automatic transmission gear - Google Patents

Abstract

PURPOSE:To make small in size an automatic transmission gear by arranging components of oil pump and a oil pump itself in a particular configuration on an oil pump housing portion mounted to a converter housing in a particular manner. CONSTITUTION:In a transaccel-casing of an automatic transmission gear 20 consisting of a transmission casing 22 and a converter housing 24, an oil pump housing portion 24b is integrated with said housing 24 so as to separate said casing 22 and said housing 24. In an circular concave 24c formed on said housing portion 24b, for example a vane pump 27 is disposed, and on the surface of casing 22 side of said housing portion 24b, an oil pump cover 30 is mounted through a separator 29, thereby obviating the necessity of a space for mounting a conventional oil pump housing.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a 4-in-1 oil assembly structure for an automatic transmission, particularly a 7-in-1 oil assembly structure.
This invention relates to an oil pump assembly structure for an automatic transmission that is suitable for the transaxle of a C1 engine 7W engine vehicle.

The conventional oil I-ring assembly structure for automatic transmissions is as follows: 1
111 Something like the one shown in figure 6! This transaxle with automatic transmission consists of a transaxle case that houses the transmission mechanism such as gears and wet clutches, and a transaxle case that houses the transmission mechanism such as gears and wet clutches. The cylinder case 1 and the cylinder housing 3 are connected by a melt 4.

An oil I-ring housing 6 and an oil-pong cover 7ti constituting the oil I-ring 5 are attached to the transmission case 1 by a bolt 8. The oil bonder 60 gear 9 is driven by the torque converter 20 sleeve 21. A stator (not shown) of the torque converter 2 is supported at the shaft portion 7 and the tip of the oil ring cover 7. The output from the transmission mechanism inside the transmission case 1 is transferred to the transfer mechanism 7)1.
(1m is transmitted, and from there it is further transmitted to the final drive device 11.The transformer 7 shaft 10 is supported by a bearing 10m of the converter housing 3@ and a bearing on the transformer 2 transmission case 1 side (not shown).

However, in such a conventional oil pump assembly structure, the oil pump 6 is attached to the front end of the transmission case 10, and the transmission case IK converter housing 3'fem meets the outer periphery of the oil pump 5. Transfer shaft 10 and transformer 2 have bearings 10a that need to be placed so as not to interfere with oil pump 5.
There is a problem in that the distance between the shaft and the center axis of the transmission is very large, which makes the entire automatic transmission large. ] The problem is that the mounting JB & Rut 4 is required, which increases the price and troublesome tearing work.In addition, the front end of the transmission case 1 requires processing of the oil pump f embedding part, and the converter There are six problems in that the song mounting part needs to be processed.The present invention has been made by focusing on the above-mentioned conventional problems, and the oil pump housing is formed integrally with the converter housing. The purpose is to solve the above problems.

Hereinafter, the present invention will be explained based on the second part of the attached drawings showing an embodiment thereof.

The automatic transmission 200 transaxle casing includes a transmission case x 22 that accommodates a transmission such as gears and a wet clutch (shown in the skeleton diagram), and a transmission case x 22 that accommodates a transmission case x 22 (shown in the skeleton diagram), 4-ta^ujiyg2
The transmission case 22 and the converter housing 24 are connected by a bolt 25. The life f/% caging portions 22& and 24& are each integrally formed).

The converter housing 24 has an oil pump housing portion 24b integrally formed with the transformer two-transition case 22 so as to partition the converter housing 24 from the converter housing 24. A cam ring 271 is fitted with a component of an oil pump, for example, a vane pump 27, into a circular recess 24c provided in the oil port/housing portion 24bK. A rotor 27b, a vane 27C, and a ring 27a are arranged. Note that a wear-resistant side grate 28 is arranged at the bottom of the recess 24e. The oil pump 1 is installed on the bottom of the case 22, and the oil pump 30 is attached by the gel 31.
It is attached. The shaft portion 30 of the oil pump housing 30 penetrates through the center of the oil pump housing portion 24b and protrudes into the pump housing 24, and the stator (not shown) of the torque converter 23 is supported at its tip. ing. The rotor 27b of the vane 4 differential 2 is driven by the sleeve 23aK of the torque converter 23. The output from the transmission mechanism 21 inside the transmission case 22 is transferred to the transfer shaft 3! The signal is then transmitted to the final drive device 26 from there. Note that the transformer 7 shaft 32 is supported by the bearing 33 of the converter housing 241M and the transmission case 22111D bearing (not shown).

Next, the effect will be explained. When the torque converter 23 rotates, the vane pump 2
The rotor 27b of No. 7 is driven, and the drum pump 27 discharges pressure oil by a well-known operation. At that time, the cam ring 27i11 and rotor 27bOjlillK were arranged. fv-) 211 and Hise/Mother Rate Great 2
9, the rotor 27b is directly connected to the oil pump housing part 2.
4b and oil 4n! This is to prevent contact with the cover 30 so that they do not wear out. t7t, separate gray) 29 is formed on the oil pump cover 30 and also has the function of covering and sealing the groove-shaped oil passage.

Note that in the above embodiment, the oil pump housing portion 24b
A side grate 28 is arranged at the bottom of the recess 24C, but generally the oil Iyf grating part 2 is made of Al2 alloy.
4bK If the usage conditions are such that the oil pump 1 housing portion 24bK does not wear out even if the rotor 27b rotates in direct contact with the oil pump 1, it is also possible to remove the side play 28. The IL separate grate 29 can also be removed if it is possible to form an oil passage in the oil pump l cover 30K, for example by providing a hole.

tt. In the above embodiment, an example was explained in which the vane member 1 was used as an oil pump.
Softly vane 4nde's service Ktl is not given, gyande etc. 0IIO oil 4! It goes without saying that this method can also be applied to the case where a solid wood is used. However, when using a solid wood, a soft aluminum five-alloy etc. can be used as the oil powder. Therefore, it has a feature that is advantageous for weight reduction.

As explained above, according to the present invention, an oil ring is integrally connected to the converter housing connected to the transformer transmission case that houses the transmission mechanism, so as to partition between the transformer I and zero. The housing part is formed and the transformer ζ tension case of the oil-y dehousing s is provided in the order of r! ! Install the OIL-UNDE 411 components that make up the oil pump in the Jill, and install the WK OIL-I-INDE caper of the transmissive part of the 7" Hakuzong section to complete the OIL J&L yF assembly structure. Since TW is a good friend, there is no need for the oil 4ndehakujinda installation nut (-nu), which was necessary in the automatic transmission of the above-mentioned Ojuqin, and the trans 7 asia 7
It is possible to place the bearing near the center axis of the transformer shaft, and the transformer 7 shaft can be placed close to the center axis of the transformer shaft. This makes it possible to reduce the weight of the entire automatic transmission. In addition, an O-rut for mounting the oil pump is not required, which reduces the cost and also simplifies the assembly work. Also.

In addition to eliminating the need for machining the oil I:/f attachment part of the Tsun Δ-I removal, there is no fear of oil layer leaking from the oil I/F attachment part.

By providing a wear-resistant F7'' rate at the bottom of the concave portion of the oil 4-wheel housing, sufficient durability of the oil pump can be ensured even under harsher operating conditions.

In addition, by providing a wear-resistant separate route between the oil pump housing section, oil pump l cover, and O, in addition to improving durability, the oil pump l cover and the oil pump l cover are provided with separate routes. An oil passage can be easily formed on the mating surface of the cover.

Table im*o Brief explanation [Figure 1 shows the oil input assembly structure of the conventional automatic transmission, Figure 2 shows the oil input assembly structure of the automatic transmission according to the present invention.
-The figure below shows the assembly structure of 1.

20... automatic transmission, 21-transmission mechanism, 22-) Lance Mitsushi attack,! 3-) Luk converter, 23
m=・Sleep%14-ff! Housing%2
4 a = Detshukji fern part, 24b-・Oil 4nd evacuation part % 24@-...Concave part, 25-・-Rot, 2
6...7 Aina# dotside device, 27-・Benbonde C oil 17f), 2γa-force mulling, 27 b-
·Low! , 27 a = vane, 27 d - ring,
27m, 2'lb, 27@, 27d = 4-liter oil component, 2g-・side plate, 29...° separate grate, BO-・oil 4-liter/year, 30 m
・-・Shaft 111, 31-・・Rot, 32-) Runup shaft, S S −・・Bearing.

Patent applicant: Nippon Motor Co., Ltd.

Claims (1)

[Scope of Claims] A converter removal unit connected to the transmission case housing the transmission mechanism is integrally formed with an oil housing part that separates the transmission case from the oil transmission case. The oil I-ring constituent member constituting the oil loop is disposed in a recess provided on the transmissive case IIO surface of the four-stage pump housing section, and the oil I-ring constituent member constituting the oil pump is disposed in the recess provided on the transmissive case IIO surface of the oil bong housing section. Is it the oil for the automatic transmission with the oil I pump cover installed? hmm! Assembly structure. The oil pump housing section described in zIII contains oil Iyf.
Hakuzongu O1! ! Part 1 O! Claim 1: An oil pong assembly structure for a @10-route transmission, which has a wear-resistant sillage rate. The oil ring cover is the oil ring cover K.
O according to claim 1 or 2, which is attached to the r part of the oil pump housing through a wear-resistant separator plate F that covers and seals the groove-shaped oil passage formed in Y/II. Structure with automatic transmission like Ooik/yf@.