CN1148517C

CN1148517C - Clutch

Info

Publication number: CN1148517C
Application number: CNB011105011A
Authority: CN
Inventors: 八尾守; 夫; 嶋本雅夫
Original assignee: Daihatsu Motor Co Ltd
Current assignee: Daihatsu Motor Co Ltd
Priority date: 2000-04-18
Filing date: 2001-04-06
Publication date: 2004-05-05
Anticipated expiration: 2021-04-06
Also published as: JP2001304293A; JP3402462B2; CN1318698A

Abstract

A boss part of a clutch drum is inserted through an outer periphery of a support member fixed at a constant position free to rotate, seal rings to slide with an inner peripheral sliding surface of the clutch drum are installed on an outer peripheral part of the support member, and hydraulic pressure is supplied to piston chambers provided inside of the clutch drum through oil passages, sealed by these seal rings. A connecting part projected to the inner diametrical side is formed on a head end part of the boss part of the clutch drum, and this connecting part is connected to an axis of rotation. A pocket type oil reservoir space is formed between an inside wall of the connecting part and an end surface of the support member, and a passage to supply lubricating oil to the other portion. A groove part recessed to the inner peripheral side from an inner peripheral sliding surface 5b is formed on an inner peripheral surface of the clutch drum, and dust contained in lubricating oil is reserved in this groove part.

Description

The die clutch construction of automatic transmission

Technical field

The present invention relates to the die clutch construction of usefulness such as a kind of vehicle automatic transmission.

Background technique

In vehicle automatic transmission, be provided with a plurality of mating members, cooperate, can obtain multi-change speed by selecting one of these mating members or several.Die clutch construction as mating member, it is described for example to open flat 7-20457 patent gazette in fact, insert the spline of clutch drum that can comfortable rotation in the periphery that is fixed in speed changer case upper support parts, the interior all slip surfaces and the sliding ring of the spline part of clutch drum are housed at the peripheral part of supporting part, by this seal ring, supply with oil pressure for the piston chamber that is provided with in the inside of clutch drum by the oil circuit of sealing, front end at the spline part of clutch drum forms to the side-prominent linking department of internal diameter, this linking department is linked by the input shaft and the spline of the inboard of inserting supporting part, between the end face of the madial wall of linking department and supporting part, is furnished with the thrust-bearing that bears the thrust that acts on clutch drum.

In the clutch of above-mentioned structure, for lubricating thrust bearing, be necessary supplying lubricating oil, for this reason, internal side diameter supplying lubricating oil from the lubricating oil path axial thrust bearing that forms in input shaft, this oil flows outside radial direction owing to centrifugal force, usually lubricate other lubricated portion (as clutch disk), but, when using needle bearing as the promotion bearing, lubricants capacity by needle bearing is few, can not be to other abundant supplying lubricating oils of lubricated portion, and, by oil require direction stream outside radial direction of thrust-bearing, thereby be necessary to form intercommunicating pore at the spline part of clutch drum, the possible interference configuration of this intercommunicating pore is at the slip surface of the piston of spline part periphery.

Here, the store oil space of shape pouch between the end face of the madial wall of linking department and supporting part, in this store oil spatial configuration in the thrust-bearing, consider the structure that the lubricant oil that flows to clutch disk etc. is supplied with by other oil circuit.

Yet, because oil does not circulate in bag shape store oil space, micro powders such as the metal abrasion powder that contains in the oil are trapped in the peripheral part in store oil space owing to centrifugal force, the unfavorable condition of abrasion seal ring will take place in these powder accumulations on seal ring, its result, might make the sealability of seal ring lowly reach leakage of oil, and then, because the influence of dust also might bring bad influence to thrust-bearing.

Summary of the invention

The purpose of this invention is to provide and a kind ofly prevent to be contained in powder accumulation in the lubricant oil on seal ring, and can improve the die clutch construction of seal ring wear resistance performance.

For achieving the above object, the invention provides a kind of die clutch construction of automatic transmission, insert the spline part of the clutch drum that can rotate freely in the periphery of the fixing supporting part of certain position, at the interior all slip surfaces of the bulging spline part of the peripheral part clutches of supporting part and the seal ring of slip, by the oil circuit of sealing the piston chamber in the inner setting of clutch drum is supplied with the die clutch construction of oil pressure by this seal ring, front end at the spline part of above-mentioned clutch drum is processed into to the side-prominent linking department of internal diameter, when this linking department is attached at the running shaft of the inboard insertion of supporting part, shape pouch store oil space between above-mentioned linking department madial wall and the supporting part end face, form path from the interior perimembranous of lubricant oil supply passage by above-mentioned store oil space to other part guidance lubricant oil, inner peripheral surface at the clutch drum that constitutes above-mentioned store oil space peripheral part, all slip surfaces have formed chase portion to outer circumferential side in the above-mentioned clutch drum.

Lubricant oil from the supply of lubricant oil supply passage, the interior perimembranous in the store oil space that forms between the madial wall of the linking department of clutch drum and supporting part end face is passed through, supply with to other positions, but because the metal that contains in action of centrifugal force lubricant oil abrasion powder is trapped in the peripheral part in store oil space, the metallic dust of these delays is deposited between interior all slip surfaces of seal ring and clutch drum, makes the seal ring abrasion.Yet, the inner peripheral surface in store oil space, owing to formed chase portion from interior all slip surfaces of clutch drum to outer circumferential side, metal abrasion powder can improve the cleanliness of slip surface, and can prevent the abrasion of seal ring because of centrifugal force is trapped in this ditch portion.

In addition, all slip surfaces are abrasive machining within the clutch drum of seal ring and slip, and ditch portion has the function of avoiding grinding, thereby can improve processability.In addition, as the lubricant oil supply passage, supporting part also form can, form by bearing from supporting part and also can.

In above-mentioned clutch, can dispose the thrust-bearing of the thrust of bearing clutch drum in the store oil space, thrust-bearing can be located between the lateral part and supporting part of clutch drum.But thrust-bearing becomes major diameter here, causes cost and rises.To this, when thrust-bearing is located at the store oil space,, when expected cost descends,, can improve durability because thrust-bearing always is configured in the oil owing to can enough smaller diameter shaft constitute.

Description of drawings

Fig. 1 is the sectional view of a routine die clutch construction among the present invention.

Fig. 2 is the enlarged view of the part of Fig. 1.

Among the figure, 1. input shaft (turning axle), 3. supporting part, 5. clutch drum, all slip surface 5c. linking departments in the 5a. spline part, 5b., 5d. ditch portion, 10,17 oil circuits, 33. lubrication holes, 34. intercommunicating pores.

Embodiment

Fig. 1, Fig. 2 represent to be adapted to about the present invention an example of the die clutch construction of vehicle automatic transmission.

At the central part of this automatic transmission, disposed input shaft 1 by torque speed changer transmission engine power, input shaft 1 is inserted among the cylindrical portion 3a of the supporting part 3 that is fixed on speed changer case 2.In the inboard of supporting part 3, be fixed with the sleeve pipe 4 that supports input shaft 1 by bearing shell 9.At the peripheral part of cylindrical portion 3a, the spline part 5a of clutch 5 is rotated freely and supports, and at the peripheral part of cylindrical portion 3a, is equipped with at the interior all slip surface 5b that form in interior week of spline part 5a and the seal ring 6a～6c of 3 slips.

Front end at the spline part 5a of clutch drum 5 has formed to the side-prominent linking department 5c of internal diameter, and it is chimeric that this linking department 5c and the spline part 1a that forms on input shaft 1 make spline.Formed the store oil space 7 of bag shape between the end face of the madial wall of linking department 5c and supporting part 3, this store oil space 7 is lubricated with open pore 33 supplying lubricating oils by what establish on aftermentioned input shaft 1.The terminal in store oil space 7 has disposed the thrust-bearing 8 of the thrust of bearing clutch drum 5 by seal ring 6c sealing pouch in this space 7.This embodiment's thrust-bearing 8 is needle bearings.The peripheral part in store oil space 7 is the inner peripheral surface of clutch drum 5, has formed the 5d of chase portion to outer circumferential side from interior all slip surface 5b.

At the spline part 5a of clutch drum 5 and the cylindrical portion 3a of supporting part 3, connect radial direction and form two

oil circuits

10,17, these oil circuits are by 3 seal ring 6a～6c sealing, and simultaneously by

oil circuit

10,5 inner the 1st piston chamber 11 that form supply with running oil to clutch drum.By the running oil that the 1st piston chamber 11 supplies with,, concluded by the clutch disk 14 of configuration between clutch drum 5 and the 1st clutch housing 13 in 11 runnings of the 1st piston chamber.Inboard at the 1st piston 12 has axially disposed the 2nd piston 15 free sliding, forms the 2nd piston chamber 16 between the 1st piston 12 and the 2nd piston 15.In this 2nd piston chamber 16,, supply with running oil by another oil circuit 17 of sealing by seal ring 6b, 6c.The 2nd piston 15 axially operates, and thus, concludes the clutch disk 19 in the

1st piston

12 and 18 configurations of the 2nd clutch housing.In the periphery of the linking department 5c of clutch drum 5 interior perimembranous, between canceller plate 21 and the 2nd piston 15, the 1st piston 12 and the 2nd piston 15 have axially been disposed the multiple resilience spring 22 of the usefulness that resets by trip ring 20 driving fit canceller plates 21.The inner peripheral surface of the peripheral part of canceller plate 21 and the 2nd piston 15 is slidingly connected with air-tight state, formed oil pressure canceller chamber 23 between elimination plate 21 and the 2nd piston 15, this canceller chamber 23 is for the part of cancellation by the living centrifugal oil pressure of the fry dried food ingredients in the 1st piston chamber 11 or the 2nd piston chamber 16.

At supporting part 3, remove oil circuit 10 from running oil to the 1st piston chamber 11 that supply with, to the oil circuit 17 of the 2nd piston chamber 16 supply running oil, also formed the oil circuit of supplying lubricating oil.Promptly, the longitudinal wall part 3b of supporting part 3 has formed the oil circuit 30 that extends on radial direction, the ditch shape oil circuit 31 that this lubricant oil oil circuit 30 forms by the outer circumferential face at sleeve pipe 4, connect to the oil circuit of establishing in the inside of input shaft 1 32, and then oil circuit 32 connects the inside diameter to above-mentioned store oil space 7 from the hole 33 at the radial direction opening.By the oil circuit 30 of above-mentioned supporting part 3, the oil circuit 31 of sleeve pipe 4, the oil circuit 32 of input shaft 1 and open pore 33 constitute the lubricant oil supply passage.From the lubricant oil of open pore 33 supplies, when entering store oil space 7, lubricative axle sleeve 9, further, and by the intercommunicating pore 34 that forms at the linking department 5c of clutch drum 5 tilted direction, guiding canceller chamber 23.Be stranded in the oil of canceller chamber 23, be accompanied by the expansion of the 1st piston chamber 11 or the 2nd piston chamber 16, the otch 21a that forms by the interior perimembranous at canceller chamber plate 21 flows out to the outside, is flowed to peripheral direction by centrifugal force, lubricated

clutch disk

19,14.

In the clutch of above-mentioned structure, pass through open pore 33 to store oil space 7 supplying lubricating oils from lubricating oil path 32, but the powder that leaves in lubricant oil is trapped in the peripheral part in store oil space 7 owing to centrifugal force, these powder accumulations are between interior all slip surface 5b of seal ring 6a～6c and clutch drum 5, wear away seal ring 6a～6c, yet, because being the inner peripheral surface of clutch drum 5, the peripheral part in store oil space 7 formed the 5d of ditch portion, powder is because centrifugal force completely enters the 5d of ditch portion, be not detained at interior all slip surface 5b, therefore, can reduce the abrasion of seal ring 6a～6c, and then dust is trapped in the 5d of ditch portion, the accumulation of axial thrust bearing 8 powder can reduce, thereby improves the life-span of thrust-bearing 8.

In addition, the interior slip surface 5b of the clutch drum 5 that is slidingly connected with seal ring 6a～6c is formed by abrasive machining, the 5d of ditch portion become the regulation abradant surface end position avoid grind (mark), thereby the advantage of easy processing is arranged.

Further, lubricant oil from lubrication hole 33 supplies, do not supply with to lubricated portion by intercommunicating pore 34 via store oil space 7, this intercommunicating pore 34 does not form at the peripheral part in store oil space 7, form at joint 5c, thereby intercommunicating pore 34 does not disturb the bearing surface of piston of the spline part 5a periphery of clutch drum 5.

The present invention not only is defined in the above embodiments.

In the above-described embodiment, disposed thrust-bearing 8,, not necessarily leaveed no choice but 7 configuration thrust-bearings 8 in the store oil space if can bear by other parts to the thrust of clutch drum 5 in the store oil space 7 of bag shape.

In the above-described embodiments, in the internal configurations of clutch drum 5

piston

12,15 of duplex, form 2 piston chamber 11,16 in the inside of clutch drum 5, but be not limited only to this, can be suitable for too for the clutch that is provided with single piston chamber.

To the lubricant oil supply passage, constitute by the

path

32,33 of the path 31 of the path 30 of supporting part 3, sleeve pipe 4, turning axle 1, but, also can constitute the lubricant oil supply passage without turning axle 1.For example, the path 31 (with reference to Fig. 1) of sleeve pipe 4 is extended to the left side, also can be used as the lubricant oil supply passage.

In addition, fixed the sleeve pipe 4 of monomer at the inside diameter of supporting part 3, integrally formed to make supporting part also passable but make supporting part 3 and sleeve pipe 4.

From the interior perimembranous of lubricant oil supply passage by store oil space 7, path as to other conduction lubricant oil has formed intercommunicating pore 34 at the linking department 5c of clutch drum 5, replaces this intercommunicating pore 34, utilize the spline part 1a of turning axle 1, as lubrication passages also can, in addition, under the situation of establishing intercommunicating pore 34, except to having passed through the oil of this intercommunicating pore 34, through decontamination chamber 23, beyond the lubricated portion of guiding, the lubricated portion of the clutch disk that also can directly lead etc.

As above offering some clarification on, according to the present invention, between the end face of the madial wall of the linking department of clutch drum and supporting part, the interior perimembranous in the bag shape store oil space that forms, by in this perimembranous supplying lubricating oil the time, the powder that is contained in the lubricant oil in the store oil space is detained, but at store oil space peripheral part also is the inner peripheral surface of clutch drum simultaneously, formed chase portion from interior all slip surfaces of clutch drum to outer circumferential side, be contained in the lubricant oil dust since centrifugal force and retention in ditch portion, so can improve the cleanliness of slip surface, also can prevent the abrasion of seal ring.

Simultaneously, interior all slip surfaces of the clutch drum that slides with seal ring are by abrasive machining, and ditch portion has as the function of avoiding grinding, thereby the advantage that improves processability is arranged.

And the store oil space is a bag shape, the peripheral part in this store oil space, and because of there is no need to form the intercommunicating pore of the spline part that connects clutch drum, and intercommunicating pore has the advantage of the bearing surface of piston of the spline part periphery of not disturbing clutch drum.

Claims

1. the die clutch construction of an automatic transmission, it is the spline part that the periphery of supporting part fixing on the speed changer case can be inserted clutch drum with rotating freely, and the seal ring that the interior all slip surfaces with the spline part of clutch drum slide is housed at the peripheral part of supporting part, supply with the die clutch construction of oil pressure to piston chamber in the setting of the inside of clutch drum by the oil circuit of sealing by this seal ring, the front end of the spline part of above-mentioned clutch drum forms to the side-prominent linking department of internal diameter, this linking department links the turning axle that is inserted in the supporting part inboard, simultaneously, the store oil space of shape pouch between the madial wall of above-mentioned linking department and the supporting part end face, it is characterized in that forming the path that imports lubricant oil to other positions, form chase portion from interior all slip surfaces of above-mentioned clutch to outer circumferential side at the inner peripheral surface of the clutch drum that constitutes above-mentioned store oil space peripheral part from the interior perimembranous of lubricant oil supply passage by above-mentioned store oil space.

2. die clutch construction according to claim 1 is characterized in that, in above-mentioned store oil spatial configuration accept the thrust-bearing of the thrust of clutch drum.