JPH0526263A - Side plate for one-way clutch - Google Patents

Abstract

PURPOSE:To prevent the decrease of a life by a method wherein a side plate for a one-way clutch has a surface making contact with an outer ring and formed in a waveform such that a plurality of crests and roots are alternately formed and always presses the outer ring, and a slide bearing for centering the outer ring is prevented from dislocation. CONSTITUTION:A side plate 1 is located to each of the two ends in an axial direction of an outer ring 3 of a one-way clutch 20 in a state to make contact with an outer ring 3, and the side plate 1 is axially pressed by means of a stopper 4 and an outer ring support member 11. The outer ring 3 is positioned by means of the side plate 1, and a slide bearing 6 to hold the outer and inner rings 3 and 2 in a concentric state is prevented from a slip off from the one-way clutch 20. The side plate 1 is annularly formed of a resilient material and fixed to the support member 11 by means of four tubs 1a and formed such that four each of crest parts 1c and root parts 1b of the shape of a waveform are alternately formed in an equally divided manner in a peripheral direction. A difference (d) in a level between the crest and the root is produced axially of the side plate 1. Thus, when the support member 11 and the outer ring 3 are relatively moved during operation, the side plate 1 is always pressed against the outer ring 3 through a spring action and the slide bearing 6 is prevented from dislocation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a one-way clutch used as a component for torque transmission, backstop, etc. in a drive unit of an automobile or the like, and more particularly to a one-way clutch such as a sprag type or a roller type. The present invention relates to a side plate in which a one-way clutch and a slide bearing are arranged adjacent to each other at both ends of an outer ring in which a clutch is incorporated so as not to come off the outer ring.

[0002]

2. Description of the Related Art Generally, an outer ring in which a one-way clutch is incorporated has a slide bearing for the purpose of centering between the inner ring and the inner ring. At both ends of the outer ring, the one-way clutch and the slide bearing are separated from the outer ring. The side plates are adjacent so that they do not exist.

For example, as shown in FIGS. 5 and 6, a conventional side plate 100 has a plurality of radial grooves 100b. 100a
Is a tab for fixing the side plate 100 to a support member for the outer ring or the like. Lubricating oil that lubricates the one-way clutch is discharged from the gap between the inner and outer diameters of the side plates by centrifugal force, natural drop, etc.At that time, the groove 100b provided on the side plate 100 serves as the lubricating oil passage and is distributed around the outer ring. It is supplied as lubricating oil for lubricating installed parts (clutch plate, etc.). In addition, in the case of the side plate, the lubricating oil thus supplied lubricates the inner and outer diameter sliding portions to prevent seizure or the like. As is apparent from FIGS. 5 and 6, the side plate 100 is composed of an annular member having a substantially uniform wall thickness.

[0004]

However, the conventional side plates for a one-way clutch and the one-way clutch using the same have the following problems to be solved. First, in the conventional side plate, since the side plate is separate from the outer ring, the side plate and the outer ring can easily move in the axial direction with each other, and the side plate itself has no spring action, so that the outer ring cannot be constantly pressed. For example, if a gap is generated between the outer ring and the side plate, the plain bearing may be disengaged from the outer ring, the bearing function may be significantly reduced, and the durability of the one-way clutch may be impaired.

When the lubricating oil discharged from the one-way clutch scatters due to centrifugal force, part of the lubricating oil tries to pass through the groove provided in the side plate, but the opening area of the lubricating oil groove is small. It does not enter positively, most of it escapes, and lubrication of necessary parts (clutch plate etc.) cannot be executed.

[0006]

In order to solve the above-mentioned problems, the side plates for a one-way clutch of the present invention are radially spaced apart, and are arranged concentrically so as to be rotatable relative to each other and annularly extending in the axial direction. First and second rotating members each having a raceway surface, a torque transmission member that is arranged between the raceway surfaces to transmit torque between the raceway surfaces, and a pair of cages that hold the torque transmission member in an equal circle. In a side plate used for a one-way clutch composed of a slide bearing that holds the first and second rotating members concentrically, a surface of the side plate that is in contact with the first rotating member has a plurality of peaks and valleys alternating in the circumferential direction. It is characterized by having a waveform having

Further, the one-way clutch of the present invention includes first and second rotating members which are spaced apart in the radial direction, are concentrically arranged so as to be rotatable relative to each other, and have an annular raceway surface extending in the axial direction. , A torque transmission member that is arranged between them and that transmits torque between the raceways, a pair of cages that hold the torque transmission member in an equal circle, and the first and second rotating members are concentrically held A one-way clutch including a plain bearing is characterized in that a surface of the side plate which is in contact with the first rotating member has a waveform having a plurality of peaks and valleys alternately in a circumferential direction.

With the above-described structure, the slide bearings for centering the inner ring and the outer ring are not disengaged or deformed, and the side plate for the one-way clutch and the side plate for the one-way clutch are not likely to be shortened. It is possible to achieve the object of the present invention to provide a one-way clutch using the.

[0009]

[Function] Since the side plate itself has a spring action, the outer ring can be constantly pressed, and no gap is generated between the outer ring and the side plate. In addition, the corrugated troughs and peaks formed on the back surface of the side plate can secure a lubricating oil flow path (lubricating oil supply region) with a large opening area, so that the lubricating oil can be supplied to the portion requiring lubrication. You can do it reliably.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. Needless to say, the examples described below are intended to illustrate the present invention and are not intended to limit the present invention. In addition, the same portions in each drawing are represented by the same reference numerals.

FIG. 1 is a perspective view of a side plate 1 showing an embodiment of the present invention. FIG. 2 is a front view of the side plate of FIG. 1 viewed from the direction of arrow A. FIG. 3 is a side view of the side plate of FIGS. 1 and 2. The side plate 1 is usually integrally formed from a plate material such as a steel plate having a substantially uniform thickness. Further, it can be formed of a material such as a heat-resistant resin having a predetermined rigidity, if necessary. The side plate 1 is configured as an annular member having a circular opening in the center as is clear from FIG.
As shown in Fig. 3, the shape is wavy as a whole.

The side plate 1 has four tabs 1a equally divided in the circumferential direction, and the tabs 1a cause the side plate 1 to have an outer ring 3 (see FIG. 4).
It is fixed to the support member (see). In the case of this embodiment,
As shown in FIGS. 1 and 2, four wavy peaks 1c and troughs 1b are equally divided in the circumferential direction. At this time, the height difference d between the bottom of the valley 1b and the top of the peak 1c can be optimally determined in consideration of the material forming the side plate 1 and the like. The number of valleys 1b and peaks 1c can be arbitrarily determined as needed, but it is preferable that they are arranged at equal intervals on the circumference. The height difference d between the bottom of the valley 1b and the top of the peak 1c is defined in the axial direction of the side plate 1.

As is apparent from FIG. 1, since the side plate 1 has a corrugated shape as a whole, it is possible to dispose either the back surface portion or the front surface portion so as to face the outer ring. Also, the side plate 1
It is preferable to select a material having elasticity as a material forming the. Further, the inclination of the inclined portion between the bottom of the valley 1b and the top of the crest 1c can be arbitrarily set in consideration of the spring property required for the side plate 1.

FIG. 4 is a sectional view showing a state where the side plate of FIG. 1 is incorporated in a one-way clutch. The one-way clutch 20 is disposed between the first rotating member, that is, the outer ring 3 and the second rotating member, that is, the inner race 2, the inner race 2 and the raceway of the outer race 3, and is a torque transmission member that transmits torque between the two. That is, the sprag 9, the outer and inner holding members 7 and 8 for holding the sprag 9, the ribbon spring 10 arranged between the outer and inner holding members 7 and 8 for giving a rising moment to the sprag 9, and the inner ring 2 and the outer ring. In order to hold 3 concentrically, the slide bearings 6 are provided on both sides in the axial direction of the one-way clutch.

The outer and inner holding members 7 and 8 each have a plurality of windows provided in the circumferential direction and opening in the radial direction, and a plurality of sprags 9 are inserted into the windows, respectively, and the inner ring and It is possible to stand up at a predetermined angle with respect to the raceway surface of the outer ring. At both axial ends of the outer ring 3,
The side plate 1 is provided in contact with the outer ring 3.

The two side plates 1 are axially pressed by a stopper 4 and an outer ring support member 11 in FIG. A clutch plate 5 is attached to the outer side of the outer ring 3 via a support member 11. Inner ring 2
A lubricating oil supply hole 2a for lubricating the one-way clutch 20 is provided therein.

In the above structure, the side plate 1 positions the outer ring and prevents the constituent elements of the one-way clutch 20, particularly the sliding bearing, from coming off from the one-way clutch 20.

The operation and function of the side plate 1 according to one embodiment of the present invention will be described below. In FIG. 4, the outer ring 3
Since the side plate 1 and the side plate 1 are axially movable relative to the support member 11 of the outer ring 3, the one-way clutch 20
When the support member 11 and the outer ring 3 move relative to each other during the operation of
A gap may occur between the side plate 1 and the outer ring 3. This state is shown in FIG. In FIG. 7, a gap e is formed between the side plate 1 and the axial end surface of the outer ring 3. When a gap e is formed between the outer ring 3 and the side plate 1 in this manner, the plain bearing 6 is separated from the outer ring 3 as shown in FIG. It may be deformed to the shape shown in. Such deformation of the slide bearing 6 makes it difficult to maintain the concentricity of the inner ring 2 and the outer ring 3 and, as a result, the one-way clutch 20.
Durability will be significantly reduced.

However, when the side plate 1 is given a corrugated shape as shown in FIG. 1, a spring action is generated in the side plate 1 itself due to the ridges of the corrugations, so that a force that causes a clearance e is generated in the one-way clutch 20. Even if it works, the spring action of the side plate 1 can reduce it. That is, since the side plate 1 can always be kept in close contact with the outer ring 3, the sliding bearing 6 is unlikely to come off the outer ring 3. Therefore, the deformation of the slide bearing 6 can be prevented in advance. Therefore, it is possible to prevent the sliding bearing 6 from coming off from the one-way clutch 20 due to the deformation of the sliding bearing 6, and further, the inner ring 2 and the outer ring 3 due to the deformation of the sliding bearing 6.
It is also possible to prevent adverse effects on the maintenance of concentricity.

In order to effectively utilize the spring action of the side plate 1, the material forming the side plate 1 is preferably elastic. The corrugated peaks 1c and troughs 1b are elastically bent to each other to produce effective springiness. Elasticity is obtained by processing the steel plate into a corrugated shape as shown in FIG. 1, but it may be formed of other materials such as heat-resistant resin if necessary.

FIG. 8 is a perspective view showing a side plate according to another embodiment of the present invention. In this embodiment, the side plate 50 is not entirely corrugated, and one surface in the axial direction is a flat surface. The raised portion, that is, the peak portion 50c and the valley portion 50b are integrally provided on the surface contacting the outer ring 3. Yamabe 50
The height difference d between c and the valley portion 50b may be the same as that in the embodiment shown in FIG. However, it can be arbitrarily determined depending on the spring property of the side plate 50. Also in this example, Yamabe
Four 50c and troughs 50b are repeatedly provided in the circumferential direction. Due to the spring property of the side plate 50, it is preferable to form the entire side plate with an elastic material.

In the other embodiment shown in FIG. 8, the degree of freedom in designing the side plate 50 is increased. For example, the raised portion of the mountain portion 50c can be configured as a separate body. That is, it is possible to attach the raised portion as a separate body to the surface of the side plate 50 which is flat on both sides and is in contact with the outer ring 3 side, and form the raised portion 50c.
That is, the side plate 50 can also be configured with two parts. In that case, the flat portion of the side plate 50 may be formed of a normal steel plate, and the mountain portion 50c as a separate body may be formed of a heat-resistant resin or the like to integrally fix the two. Also in this embodiment, the raised crests 50c are preferably made of an elastic material. The flat portion of the side plate 50 is preferably elastic, but it does not necessarily have to be formed of an elastic material in consideration of the rigidity of the entire side plate.

Next, another aspect of the present invention will be described. Figure 9
FIG. 8 is a cross-sectional view showing a flow of lubricating oil of a one-way clutch when a conventional side plate is used. In addition, FIG.
FIG. 6 is a diagram showing a cross-sectional area of a lubricating oil groove of a side plate viewed from the direction of arrow B in FIG. FIG. 11 is a sectional view showing the flow of lubricating oil in the one-way clutch when the side plate of the embodiment of the present invention is used. FIG. 12 is a view showing a cross-sectional area of the lubricating oil groove of the side plate viewed from the direction of arrow C in FIG. 11.

9 and 11 are compared, the conventional side plate
It can be seen that 100 has a difference in the outflow path after the lubricating oil, which is supplied from the lubricating oil supply hole 2a of the inner ring 2 and lubricates the inside of the one-way clutch, goes out of the one-way clutch. When lubricating the friction surface between the side plate 50 and the slide bearing 6, in the state of the conventional side plate 100 shown in FIG. 9, the lubricating oil that lubricates the inside of the one-way clutch 20 causes the side plate 100 and the outer ring 3 and the slide bearing 6 to lubricate. I try to get into the gap between them,
As shown in FIG. 10, the opening area where the lubricating oil enters is shown in FIG.
Since it is narrower than that of Fig. 9, it becomes difficult for the lubricating oil to enter the relative contact interface between the side plate 100 and the outer ring 3 and the slide bearing 6, that is, the opening 100c, as shown in Fig. 9. . That is, most of the lubricating oil
Scatter without getting into 0c.

On the other hand, in the embodiment of the present invention, FIG.
As is clear from FIGS. 12 and 12, since the side plate 1 is formed in a corrugated shape, the area where the lubricating oil enters can be wide, and the opening area can be increased as shown in FIG. Therefore, as shown by the arrow in FIG. 11, the lubricating oil that has lubricated the one-way clutch 20 can easily enter the wide opening 1d. This is
FIG. 10 explaining the opening area of the conventional lubricating oil groove of the side plate;
It can be understood by comparing and contrasting with FIG. 12, which illustrates the opening area of the present invention. Further, the lubricating oil that has passed through the opening 1d can also lubricate the clutch plate 5 shown in FIG. Therefore, the stability of the operation of the one-way clutch 20 is improved.

In the above description of the embodiments of the present invention, the sprag type is exemplified as the one-way clutch, but it goes without saying that the present invention can be applied to other types of one-way clutch.

[0027]

According to the side plate for a one-way clutch and the one-way clutch using the side plate of the present invention described above, the following effects can be obtained.

Since the side plate has a corrugated shape, a spring action is generated in the side plate itself so that the outer ring can be constantly pressed.
There is no gap between the outer ring and the side plate. Therefore, since the plain bearing does not come off from the outer ring, deterioration of the bearing function can be prevented, and centering between the inner ring and the outer ring is surely performed. This can prevent the life of the one-way clutch from being shortened.

Further, the corrugated troughs and peaks formed on the surface of the side plate that contacts the outer ring can secure the passage of the lubricating oil having a large opening area, so that the lubrication can be surely performed to the portion requiring lubrication. It Therefore, it is possible to prevent malfunction of the clutch plate due to seizure or the like due to lack of lubricating oil.

[Brief description of drawings]

FIG. 1 is a perspective view of a side plate showing an embodiment of the present invention.

FIG. 2 is a front view of the side plate of FIG. 1 viewed from the direction of arrow A.

3 is a side view of the side plate of FIGS. 1 and 2. FIG.

FIG. 4 is a cross-sectional view showing a one-way clutch incorporating the side plate of the embodiment of the present invention.

FIG. 5 is a front view showing a conventional side plate.

FIG. 6 is a side view of the side plate of FIG.

FIG. 7 is a cross-sectional view illustrating that the plain bearing may be deformed when a gap is created between the side plate and the outer ring.

FIG. 8 is a perspective view of a side plate according to another embodiment of the present invention.

FIG. 9 is a cross-sectional view showing the flow of lubricating oil in a one-way clutch when a conventional side plate is used.

10 is a diagram showing a cross-sectional area of a lubricating oil groove of a side plate as viewed from the direction of arrow B in FIG.

FIG. 11 is a cross-sectional view showing the flow of lubricating oil in the one-way clutch when the side plate according to the embodiment of the present invention is used.

FIG. 12 is a diagram showing a cross-sectional area of a lubricating oil groove of a side plate viewed from the direction of arrow C in FIG.

[Explanation of symbols]

1,50 side plate 2 inner ring 3 outer ring 6 plain bearings 20 one-way clutch

Claims (10)

[Claims] 1. A first rotating member and a second rotating member which are radially separated from each other, are concentrically arranged so as to be rotatable relative to each other, and have an annular raceway surface extending in the axial direction, and are arranged between them. A torque transmission member that transmits torque between the raceway surfaces, and a pair of cages that hold the torque transmission member at equal intervals around the circumference,
In a side plate used for a one-way clutch composed of a slide bearing that holds the first and second rotating members concentrically, a surface of the side plate in contact with the first rotating member has a plurality of peaks and valleys in a circumferential direction. A side plate for a one-way clutch, which is characterized by having a corrugated shape having alternating points. 2. The side plate according to claim 1, wherein the side plate is entirely corrugated. 3. A lubricating oil supply region for promoting introduction of lubricating oil for lubricating the one-way clutch to the back surface portion is formed by corrugated peaks and valleys of the side plate. The side plate according to claim 1. 4. The side plate according to claim 1, wherein the side plate is made of an elastic material. 5. The side plate according to claim 1, wherein the side plate is adjacent to one side or both sides of the first rotating member of the one-way clutch. 6. A first rotating member and a second rotating member which are radially separated from each other, are concentrically arranged so as to be rotatable relative to each other, and have an annular raceway surface extending in the axial direction, and are arranged between them. A torque transmission member that transmits torque between the raceway surfaces, and a pair of cages that hold the torque transmission member at equal intervals around the circumference,
A one-way clutch comprising a slide bearing for holding the first and second rotating members concentrically and a side plate for preventing the slide bearing from falling out of the one-way clutch, wherein the first rotating member of the side plate is provided. A one-way clutch having a corrugated surface having a plurality of peaks and valleys alternately arranged in the circumferential direction. 7. The side plate according to claim 6, wherein the side plate is entirely corrugated. 8. A lubricating oil supply region for promoting introduction of lubricating oil for lubricating the one-way clutch to the back surface portion is formed by corrugated peaks and valleys of the side plate. The one-way clutch according to claim 6. 9. The one-way clutch according to claim 6, wherein the side plate is made of an elastic material. 10. The one-way clutch according to claim 6, wherein the side plate is adjacent to one side or both sides of the first rotating member.