CN100460720C

CN100460720C - Bearing housing for torque transmission mechanism in power transmission

Info

Publication number: CN100460720C
Application number: CNB2005100860795A
Authority: CN
Inventors: P·S·波尔特尔; T·莫斯蒂奥
Original assignee: General Motors Corp
Current assignee: Motors Liquidation Co
Priority date: 2004-07-19
Filing date: 2005-07-19
Publication date: 2009-02-11
Anticipated expiration: 2025-07-19
Also published as: CN1760570A

Abstract

A piston bearing housing for a transmission assembly including a plurality of axially extending detents engaging a plurality of splined portions formed in a corresponding transmission case and a plurality of friction discs being Fitted adjacent to the piston bearing housing such that the claw extends the circumferential outer edge of the friction disc. The friction disc includes a plurality of torque transfer spline portions disposed in the middle of the claws in the circumferential direction. The friction plate also includes a plurality of grooves disposed each adjacent a pawl to prevent contact between the pawl and the friction plate, thereby preventing torque transfer through the pawl to the transmission case.

Description

The support housing of the torque-transmitting mechanisms in the actuating unit

The cross reference of related application

The application requires to enjoy in the rights and interests of the U.S. Provisional Application of submitting on July 19th, 2,004 60/589,142, so the mode of this application by reference is combined in here.

Technical field

The present invention relates to be arranged in the support housing of the torque-transmitting mechanisms in the actuating unit, and be particularly related to a kind of support housing that is used to hold two pistons and produces (ground) piston force in the axial direction.

Background technique

The automatic transmission assembly comprises the piston shell element sometimes, this element holds piston and corresponding clutch disk thereof. and described clutch disk engages with the internal spline of piston shell element, and the piston shell element has spline and is connected external splines on the transmission device casing.Thereby the piston shell element can axially produce the power of piston by one or more snap rings with respect to transmission device casing axial restraint.

Enter the piston shell element along with clutch disk connects by spline, the piston shell element becomes one makes the quality of transmission device assembly and the big parts that cost increases.

Summary of the invention

The invention provides a kind of center piston housing, this housing holds two relative pistons, and comprises a plurality of pawls, and these pawls are around the circumferential outer edge extension of the clutch disk relevant with two pistons.Other parts of the end of pawl and transmission device assembly are adjacent so that axially set up the power of two pistons.Clutch disk can not be connected in the center piston housing by spline, therefore can obtain a kind of lighter more economical assembly.

More particularly, the piston support housing of transmission device assembly comprises a plurality of axially extended claws, these claws engage with a plurality of splined section that are formed in the corresponding transmission case, and a plurality of friction disks are assembled near the piston support housing, thereby claw extends around the circumferential outer edge of friction disk, and friction disk comprises a plurality of middle transmission of torque splined section of claw that along the circumferential direction are arranged in.Friction disk also comprises a plurality of grooves, and it is adjacent with claw so that stop contacting of claw and friction disk that these grooves are arranged to each groove, thereby prevent by claw to transmission device casing transmitting torque.

Claw begins to extend at two opposite shaft orientations from the center hub portion, and one group of friction disk with spline is disposed in each side of center hub part, and these splines are formed on the centre that is positioned at each claw on the friction disk.These two groups of parts that friction disk is two different torque-transmitting mechanisms.

The design of the prior art that the present invention and front were described is not compared and can be increased quality or cost.

Above-mentioned feature and advantage of the present invention and further feature and advantage can draw at an easy rate from the detailed description to being used for implementing best mode of the present invention below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is the part sectioned view according to the part of the transmission device that has a center piston casing member of the present invention;

The perspective view of the center piston casing member shown in Fig. 2 displayed map 1;

Fig. 3 shows the perspective view of center piston casing member when being equipped with clutch disk among Fig. 1 and 2.

Embodiment

Fig. 1 shows the partial sectional view of six grades of transmission devices 10 of front-wheel drive.Transmission device 10 comprises center piston casing member 90, show this element well among Fig. 1,2 and 3, casing member 90 comprises columniform ring center wheel hub or body 100, and it has a plurality of splines or pawl 102, and a plurality of towards pawl 102 reciprocal second spline or pawls 104.Thereby

pawl

102 and 104 is arranged the interval 101,103 that forms wide circumferencial direction respectively between

pawl

102 and 104 at interval around cylindrical body 100, as shown in Figure 2.When being loaded into transmission device casing 111,

pawl

102 and 104 engages and enters in the spline 106 that forms in transmission device casing 111.

Pawl

102 and 104 central axis with respect to transmission device extend axially, and center hub is arranged round the central axis of described transmission device.Pawl 102 begins to extend with 104 outer rims from center hub 100 relative both sides.

A plurality of first friction disks 108 are arranged on the center piston housing 90, are positioned at a side identical with pawl 102, and a plurality of second friction disks 110 are arranged on the side identical with pawl 104.Each dish 108 has the splined section 112 that engages with spline 106, and each dish 110 has the splined section 114 (shown in Fig. 3) that engages with 106 (shown in Fig. 1) equally.

As illustrating well among Fig. 3, dish 108 has groove part 116, and this groove part 116 makes pawl 102 can pass dish 108 and do not contact mutually.Dish 110 has groove part 118, and this groove part 118 makes pawl 104 can pass dish 110 and do not contact mutually.Dish 108 is parts of (the 4th) torque-transmitting mechanisms 109, and coil 110 are parts of (the 5th) torque-transmitting mechanisms 113. (the 4th) torque-transmitting mechanisms 109 also comprises a plurality of friction disks 122 that are connected with wheel hub 124 splines, wheel hub 124 links to each other with (the 3rd) planetary carrier 115 in the mode that drives again, as shown in fig. 1.(the 5th) torque-transmitting mechanisms 113 also comprises a plurality of friction disks 126 that are connected with wheel hub 128 splines, and as shown in fig. 1, wheel hub 128 links to each other with (first) sun gear member (not shown) in the mode that drives again.

With reference to figure 1, center piston casing member 90 is slidably supporting the first annular piston element 130 and the second annular piston element, 132. first annular piston elements 130 are parts of (the 4th) torque-transmitting mechanisms 109, and is used to force

friction disk

108 and 122 frictional engagement when piston 130 is pressurized.This will set up transmission of torque and connect between (the 3rd) planetary carrier 115 and transmission device casing 111.

Piston element 132 is elements of (the 5th) torque-transmitting mechanisms 113, when piston 132 is pressurized, will force

friction disk

110 and 126 frictional engagement, thereby between (first) sun gear member (not shown) and transmission device casing 111, set up torque-transmitting mechanisms.Piston 130 slidably is arranged in the chamber 134, and piston 132 slidably is arranged in the chamber 136.By the passage in the transmission device casing 111 to

chamber

134 and 136 supplying hydraulic fluids, described passage respectively be formed on barrel portion 100 in

passage

138 and 140 align.

(the 4th) torque-transmitting mechanisms 109 also comprises cup spring 142, and this spring is as the return spring of piston 130. (the 5th) torque-transmitting mechanisms 113 also comprises cup spring 144, and this spring is as the return spring of piston 132.

Spline 112 engages with the spline 106 of gear mechanism housing 111 as previously mentioned, and does not engage with pawl 102.Therefore, pawl 102 can not transmit any torque to piston shell element 90 from (the 3rd) planetary carrier 115, because all these torques are all transmitted by friction disk 108 and spline 112.Spline 114 transmits all torques that pass to transmission device casing 111 by (the 5th) torque-transmitting mechanisms 113 from (first) sun gear member (not shown), and owing to have groove 118, so pawl 104 does not bear any transmission of torque load.

As shown in fig. 1, the end 117 of pawl 102 is adjacent with overrunning clutch 119, and the end 121 of pawl 104 is adjacent with base plate 123, base plate 123 is by 125 location of the snap ring in the transmission device casing 111. therefore,

pawl

102 and 104 can be set up the axial force that passes to overrunning clutch 119 and base plate 123 from

piston

130 and 132 respectively effectively. in other words, the overrunning clutch 119 that pawl 102 is relevant with 104 conducts and the spacer element of base plate 123 are used for producing the berth-changing strength of braking actions from

piston

130 and 132.

Implement best mode of the present invention although described in detail, yet those skilled in the art will recognize that and in the scope of appended claim, have various be used to implement alternative design of the present invention and mode of executions.

Claims

1. transmission device assembly comprises:

Piston support housing, this housing have a plurality of axially extended claws, and these claws a plurality of splined section interior with being formed on the transmission device casing engage;

A plurality of friction disks, these friction disks assemble in the mode adjacent with described piston support housing, and these friction disks comprise a plurality of middle transmission of torque splined section of described claw that are arranged in a circumferential direction;

Described friction disk also comprises a plurality of grooves, and it is adjacent so that stop contacting of described claw and described friction disk with a groove that these grooves are arranged to each described claw, thereby prevent by described claw to described transmission device casing transmitting torque.

2. transmission device assembly as claimed in claim 1 is characterized in that,

Described claw begins to extend at opposite shaft orientation from the cylindrical center wheel hub; And

One group of described friction disk is disposed in each side of described center hub, and spline is formed on the centre that is positioned at each claw on the friction disk.

3. transmission device assembly as claimed in claim 2, it is characterized in that, described cylindrical center wheel hub has first and second passages, and these two passages transport hydraulic fluid so that drive first and second pistons of the relative both sides that are positioned at described center hub, thereby make described friction disk set of bond.

4. transmission device assembly as claimed in claim 3 is characterized in that, described axially extended claw has end, and described end engages with other transmission component, so that axially produce and the relevant power of described first and second pistons.

5. torque-transmitting mechanisms assembly that is used to have the transmission device of gear mechanism housing comprises:

The piston support housing, this housing comprises the ring center wheel hub, this wheel hub has the axially extended claw of a plurality of circumferential edge from the center hub opposite side, described claw can with the splined joint on the gear mechanism housing;

First group of friction disk, these friction disk radial arrangement be in the described claw inboard of extending from first side of described center hub, but do not contact with described claw; Second group of friction disk, these friction disk radial arrangement be in the described claw inboard of extending from second side of described center hub, but do not contact with described claw;

It is characterized in that described first and second groups of friction disks comprise outward extending spline separately, described spline can with the splined joint on the gear mechanism housing.

6. torque-transmitting mechanisms assembly as claimed in claim 5, it is characterized in that, described center hub has first and second passages, these two passages transport hydraulic fluid so that drive first and second pistons of the relative both sides that are positioned at described center hub, thereby described first and second groups of friction disks are engaged.

7. torque-transmitting mechanisms assembly as claimed in claim 6 is characterized in that, described axially extended claw has end, and described end can engage with other transmission component, so that axially produce and the relevant power of described first and second pistons.

8. torque-transmitting mechanisms assembly as claimed in claim 6, it is characterized in that, described first and second piston radials are arranged in the described claw, and be communicated with the described first and second passage fluids respectively, be used for moving towards first and second groups of friction disks respectively away from described center hub, thereby so that make described friction disk engage transmitting torque with the corresponding friction disk of alternately getting involved with selectable mode driven plunger.

9. transmission device assembly comprises:

Gear mechanism housing has spline on this housing;

The piston support housing, this housing comprises the ring center wheel hub, this wheel hub has the axially extended claw of a plurality of circumferential edge from the center hub opposite side, described claw can with the described splined joint on the gear mechanism housing;

Wherein, described first and second groups of friction disks comprise outward extending spline separately, described spline can with the described splined joint on the gear mechanism housing.

10. transmission device assembly as claimed in claim 9, it is characterized in that, described center hub has first and second passages, these two passages transport hydraulic fluid so that drive first and second pistons of the relative both sides that are positioned at described center hub, thereby described first and second groups of friction disks are engaged.

11. transmission device assembly as claimed in claim 10 is characterized in that, described axially extended claw has end, and described end can engage with other transmission component, so that axially produce and the relevant power of described first and second pistons.

12. transmission device assembly as claimed in claim 10, it is characterized in that, described first and second piston radials are arranged in the described claw, and be communicated with the described first and second passage fluids respectively, be used to receive fluid so that move towards first and second groups of friction disks respectively away from described center hub, thereby so that make described friction disk engage transmitting torque with the corresponding friction disk of alternately getting involved with selectable mode driven plunger.