Centrifugal lift-off ratchet one-way clutch with rocker pocket

Abstract

The one-way clutch of claim 1, wherein the outer race includes a first outer race plate and a second outer race plate, the first outer race plate defining a first rocker pocket, the second outer race plate being non-rotatably connected to the first outer race plate and defining a second rocker pocket; an inner race axially disposed between the first outer race plate and the second outer race plate; and a rocker assembly comprising a rocker arranged to contact the inner race and including a first portion disposed in the first rocker pocket and a second portion disposed in the second rocker pocket; a spring guide held by the first outer race plate and the second outer race plate; and a spring engaged with the spring guide and in contact with the rocker.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. Provisional Application No. 63 / 081,236, filed September 21, 2020, and U.S. Non-Provisional Application No. 17 / 386,717, filed July 28, 2021, both of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to a centrifugal lift-off ratchet one-way clutch having dual outer race plates forming a chamber for a rocker assembly. Background Art

[0004] Known ratcheting one-way clutches are used in various powertrain configurations. Summary of the Invention

[0005] and a gear engaged with the first and second gears and contacting the guide rails, wherein the gears are engaged with the first and second gears and the gears are engaged with the first and second gears and contacting the guide rails.

[0006] The one-way clutch of claim 1, wherein the outer race includes a first outer race plate and a second outer race plate, the first outer race plate including a first annular flat surface facing in a first axial direction parallel to a rotation axis of the one-way clutch, and a first pocket wall offset from the first annular flat surface in a second axial direction opposite to the first axial direction and defining a first rocker pocket in the second axial direction, the second outer race plate including a second annular flat surface facing in the second axial direction, and a first pocket wall offset from the second annular flat surface in the first axial direction. The flat surface is offset and defines a second pocket wall of the second rocker pocket in the first axial direction; an inner race axially disposed between the first outer race plate and the second outer race plate; and a rocker assembly comprising: a rocker comprising a first portion disposed in the first rocker pocket and a second portion disposed in the second rocker pocket; a spring guide held by the first outer race plate and the second outer race plate and comprising a spring arm; and a spring held by the first outer race plate and the second outer race plate, wound around the spring arm, and in contact with the rocker.

[0007] According to aspects shown herein, a one-way clutch is provided, the one-way clutch comprising: an outer race, the outer race comprising a first outer race plate and a second outer race plate, the first outer race plate comprising a first annular flat surface facing in a first axial direction parallel to a rotation axis of the one-way clutch, and a first pocket wall offset from the first annular flat surface in a second axial direction opposite to the first axial direction and defining a first rocker pocket in the second axial direction, the second outer race plate comprising a second annular flat surface facing in the second axial direction, and a first pocket wall offset from the second annular flat surface in the first axial direction and defining a first rocker pocket in the first axial direction a second pocket wall defining a second rocker pocket; an inner race axially disposed between the first outer race plate and the second outer race plate; and a rocker assembly comprising: a rocker including a first portion disposed in the first rocker pocket and a second portion disposed in the second rocker pocket; a spring guide including a spring arm, a first portion disposed in the first rocker pocket, and a second portion disposed in the second rocker pocket; and a spring wound around the spring arm, in contact with the rocker, and including a first portion disposed in the first rocker pocket and a second portion disposed in the second rocker pocket. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Various embodiments are disclosed, by way of example only, with reference to the accompanying schematic drawings in which corresponding reference numerals indicate corresponding parts, and in which:

[0009] Figure 1 is a front view of an example centrifugal lift-off ratchet one-way clutch having a rocker pocket;

[0010] Figure 2 yes Figure 1 Rear view of the centrifugal lift-off ratchet one-way clutch shown in ;

[0011] Figure 3 yes Figure 1 An exploded view of a centrifugal lift-off ratchet one-way clutch as shown in ;

[0012] Figure 4 It is roughly along Figure 1 A cross-sectional view taken along line 4-4 in FIG.

[0013] Figure 5 yes Figure 1 a rear view of the pocket in the front outer race plate shown in with the rocker assembly in lift-off mode;

[0014] Figure 6 yes Figure 5 a rear view of the pocket shown in with the rocker assembly removed;

[0015] Figure 7 It is roughly along Figure 1 A cross-sectional view taken along line 7 / 10-7 / 10;

[0016] Figure 8 yes Figure 2 a front view of the pocket in the rear outer race plate shown in with the rocker assembly in locked mode;

[0017] Figure 9 yes Figure 8 a front view of the pocket shown in with the rocker assembly removed;

[0018] Figure 10 It is roughly along Figure 1 A cross-sectional view taken along line 7 / 10-7 / 10 in FIG. 1 , with the rocker assembly removed; and

[0019] Figure 11 yes Figure 2 A front view of the pocket in the rear outer race plate shown in , with the rocker assembly in freewheeling mode. DETAILED DESCRIPTION

[0020] First, it should be understood that the same reference numerals on different drawings represent the same or functionally similar structural elements of the present disclosure. It should be understood that the claimed disclosure is not limited to the disclosed aspects.

[0021] In addition, it should be understood that the present disclosure is not limited to the specific methods, materials and modifications described, and therefore can certainly vary. It should also be understood that the terminology used herein is for the purpose of describing particular aspects only and is not intended to limit the scope of the present disclosure.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this disclosure belongs. It should be understood that any methods, devices, or materials similar or equivalent to those described herein can be used in the practice or testing of this disclosure.

[0023] Figure 1 is a front view of an example centrifugal lift-off ratchet one-way clutch 100 having a rocker pocket.

[0024] Figure 2 yes Figure 1 A rear view of the centrifugal lift-off ratchet one-way clutch 100 is shown in FIG.

[0025] Figure 3 yes Figure 1 An exploded view of the centrifugal lift-off ratchet one-way clutch 100 is shown in FIG.

[0026] Figure 4 It is roughly along Figure 1 The cross-sectional view taken along line 4-4 in FIG. Figures 1 to 4 The centrifugal lift-off ratchet one-way clutch 100 includes an outer race 102 , an inner race 104 , and a rocker assembly 105 .

[0027] Figure 5 yes Figure 1 Rear view of the pocket in the front outer race plate shown in , with the rocker assembly in lift-off mode.

[0028] Figure 6 yes Figure 5 Rear view of the well shown in , with the rocker assembly removed. Figures 1 to 6 Let's review the following. Each rocker assembly 105 includes a rocker 106; a spring guide 108; and a spring 110. Spring 110 includes a helical coil 111. Outer race 102 includes a front outer race plate 111 and a rear outer race plate 114, which is non-rotatably connected to outer race plate 111 by any means known in the art. Spring guide 108 includes arms 115. Each spring 110 is wound around a corresponding arm 115.

[0029] By parts "connected in a non-rotatable manner", we mean that the parts are connected so that whenever one of the parts rotates, all of the parts rotate; and relative rotation between the parts is excluded. Radial and / or axial movement of parts connected in a non-rotatable manner relative to each other is possible. Parts connected by protrusions, gears, teeth or splines are considered to be connected in a non-rotatable manner, although there may be inherent play in the connection. The input element and output element of a closing clutch are considered to be connected in a non-rotatable manner, although there may be slip in the clutch. The input part and output part of a vibration damper that engage with the spring for the vibration damper are not considered to be connected in a non-rotatable manner due to the compression and unwinding of the spring. In the absence of other modifiers, a non-rotatable connection between or among parts is assumed to be for rotation in any direction. However, a non-rotatable connection can be limited by the use of modifiers. For example, "connected in a non-rotatable manner for rotation in the circumferential direction CD1" limits the connection to rotation only in the circumferential direction CD1.

[0030] Figure 7 It is roughly along Figure 1 The cross-section diagram is taken along line 7 / 10-7 / 10. Figures 1 to 7Let's review the following. The inner race 104 is axially disposed between plates 111 and 114. The front outer race plate 111 defines a pocket 116. For example, the outer race plate 111 includes a pocket wall 117 and a pocket wall 118. The pocket wall 117 at least partially faces an axial direction parallel to the axis of rotation AR of the clutch 100, and defines the pocket 116 in an axial direction AD2 opposite to the direction AD1. By "defining" the pocket in a direction, we mean forming a boundary of the pocket in that direction. The pocket wall 118 defines the pocket 116 in the following directions: in a radially inward direction RD1 and a radially outward direction RD2; and in opposite circumferential directions CD1 and CD1 around the axis of rotation AR of the clutch 100. Each pocket wall 118 includes: an end 119 that terminates at the circumferential wall 120 of the race plate 111; and an end 121 that terminates at the circumferential wall 120. In Figure 1 In the example shown, wall 118 is continuous between end 119 and end 121 .

[0031] Figure 8 yes Figure 2 , a front view of the pocket in the rear outer race plate 114 is shown in FIG. 1 , with the rocker assembly 105 in the locked mode.

[0032] Figure 9 yes Figure 8 A front view of the recess shown in FIG, wherein the rocker assembly 105 is removed. Figures 1 to 9 Let's review the following. The outer seat plate 114 defines a pocket 122. For example, the outer seat plate 114 includes a pocket wall 123 and a pocket wall 124. The pocket wall 123 at least partially faces the axial direction AD2 and defines the pocket 122 in the axial direction AD1. The pocket wall 124 defines the pocket 122 in the directions RD1 and RD2 and the circumferential directions CD1 and CD1. Each pocket wall 124 includes: an end 125 that terminates at a circumferential wall 126 of the seat plate 114; and an end 128 that terminates at the circumferential wall 126. In Figure 1 In the example shown, wall 124 is continuous between end 125 and end 128 .

[0033] Ends 119 and 121 define radially inwardly facing openings 129 in wall 120. Ends 125 and 128 define radially inwardly facing openings 130 in wall 126. Rocker 106 extends radially inwardly from pockets 116 and 122 through openings 129 and 130, respectively.

[0034] Figure 10 It is roughly along Figure 110, wherein the rocker assembly 105 is removed. Each set of walls 117, 118, 123, and 124 defines a rocker chamber 132 and a corresponding radially inwardly facing opening 134. For example, each pair of recesses 116 and 122 forms a chamber 132. Each rocker assembly 105 is at least partially disposed in a corresponding rocker chamber 132. Figure 7 and Figure 10 In the example of FIG, line L1 divides the rocker assembly 105 and is used to depict: the recess 116; the recess 122; and the portion of the rocker assembly 105 within the recess 116 and the recess 122. Figure 7 and Figure 10 In the example of FIG, line L1 divides chamber 132. For example, portion 106A of rocker 106 is disposed in recess 116; portion 106B of rocker 106 is disposed in recess 122; portion 108A of spring guide 108 is disposed in recess 116; portion 108A of spring guide 108 is disposed in recess 122; portion 110A of spring 110 is disposed in recess 116; and portion 110B of spring 110 is disposed in recess 122.

[0035] The spring 110 urges the rocker 106 in a pivot direction PD1 about a pivot axis PA passing through a portion 135 of the rocker 106. The portion 135 cannot rotate relative to the outer race 102 in the direction CD1 or the direction CD2. The inner race 104 includes a tooth portion 136 having a surface 138 at least partially facing in the direction CD1 and an inclined surface 140 that is inclined radially outward along the direction CD1.

[0036] for Figure 8 In the locked mode, the rotational torque transmitted by the clutch 100 causes the outer race 102 to rotate relative to the inner race 104 in the direction CD2. The spring 110 pushes the at least one rocker 106 in the direction PD1 and causes the rocker to contact the surface 140 of the tooth portion 136. The rocker 106 slides along the surface 140 in the direction CD2 until it contacts the surface 138 of the tooth portion 136, thereby preventing the outer race 102 from rotating further relative to the inner race 104 in the direction CD2.

[0037] Figure 11 yes Figure 2 A front view of the pocket 122 in the rear outer race plate 114 is shown in FIG, wherein the rocker assembly 105 is in idle mode. Figures 1 to 11 To view the following content. Figure 11In the idle mode, the rotational torque transmitted by the clutch 100 causes the outer race 102 to rotate relative to the inner race 104 in the direction CD1. The rocker 106 slides radially outward along the continuous inclined surface 140 in the direction CD1 without contacting the surface 138. Therefore, the outer race 102 can rotate relative to the inner race 104 in the direction CD1.

[0038] for Figure 5 In the lift-off mode, rotational torque is applied to outer race 102 in direction CD1, and clutch 100 is initially in freewheeling mode. When the speed of relative rotation of outer race 102 relative to inner race 104 in direction CD1 increases sufficiently, clutch 100 transitions to the lift-off mode. Specifically, the centrifugal force generated by the rotation of outer race 102 rotates rocker 106 in direction PD2, causing rocker 106 to rotate without contacting teeth 136.

[0039] Portion 106A of rocker 106 has a maximum dimension 142 in direction AD1, and portion 106B of rocker 106 has a maximum dimension 144 in direction AD1. Figure 1 In the example shown, dimension 142 is equal to dimension 144. In example embodiments not shown, one of dimension 142 or dimension 144 is at least one-quarter the other of dimension 142 or dimension 144; one of dimension 142 or dimension 144 is at least one-third the other of dimension 142 or dimension 144; or dimension 142 is not equal to dimension 144.

[0040] exist Figure 1 In the example: in each of the locked mode, the idle mode and the lift-off mode, each spring guide 108 is entirely disposed in the corresponding rocker chamber 132; for each spring 110, in each of the locked mode, the idle mode and the lift-off mode, at least the end 146 is disposed in the corresponding rocker chamber 132; and for each rocker 106, the portion 135 is disposed in the corresponding rocker chamber 132 in each of the locked mode, the idle mode and the lift-off mode.

[0041] Outer race plate 111 includes a flat annular surface 148 facing in direction AD1, and outer race plate 114 includes a flat annular surface 150 facing in direction AD2. Wall 118 forms an edge 152 in surface 148. Wall 124 forms an edge 154 in surface 150. Wall 117 is offset from surface 148 in direction AD2. Wall 123 is offset from surface 150 in direction AD1.

[0042] Figure 10 It is roughly along Figure 1 A cross-sectional view taken along line 10-10 in FIG. Figure 1In the example of FIG. 1 , the clutch 100 includes an inertia ring 156 and a fastener 158. The fastener 158 passes through the outer race plate 111, the outer race plate 114, and the inertia ring 156 and connects them in a non-rotatable manner.

[0043] For example, Figure 7 As seen in FIG, the rocker assembly 105 is partially disposed in the recess 116 and partially disposed in the recess 122. The spring 110 is wound around and in contact with the spring arm 1115. The spring 110 is at least partially held in place by the spring guide 108 and the spring arm 115. Figure 1 In the example of , spring 110 is held in place only by spring guide 108 and spring arm 115. For example, at least half of coil 111 is not in contact with plates 111 and 114. Figure 1 In the example shown, each coil 111 is not in contact with plates 111 and 114. For example, pocket walls 118 and 124 are separated from coil 111 by gap 160; and pocket walls 117 and 123 are separated from coil 111 by gap 162.

[0044] It will be understood that the various contents disclosed above and other features and functions or their alternatives can be combined into many other different systems or applications as desired. Those skilled in the art may subsequently make various currently unforeseen or unexpected substitutions, modifications, variations or improvements, which are also intended to be covered by the appended claims.

[0045] Description of Reference Numerals

[0046] AD1 axial direction

[0047] AD2 axial direction

[0048] AR rotation axis

[0049] CD1 Circumferential direction

[0050] CD2 Circumferential direction

[0051] PA pivot axis

[0052] PD1 pivot direction

[0053] PD2 pivot direction

[0054] 100 centrifugal lift-off ratchet one-way clutch

[0055] 102 outer race

[0056] 104 inner race

[0057] 105 joystick assembly

[0058] 106 Joystick

[0059] 108 Spring guide

[0060] 110 Spring

[0061] 111 Spring coil

[0062] 111 outer seat plate

[0063] 114 outer race plate

[0064] 115 Spring arm of spring guide

[0065] 116 Concave

[0066] 117 Concave wall of outer race plate

[0067] 118 Concave wall of outer race plate

[0068] 119 End of the recess wall

[0069] 120 Circumferential wall of outer race plate

[0070] 121 End of the cavity wall

[0071] 122 Concave

[0072] 123 Concave wall of outer race plate

[0073] 124 Concave wall of outer race plate

[0074] 125 End of the recess wall

[0075] 126 Circumferential wall of seat plate

[0076] 128 End of the cavity wall

[0077] 129 Opening of outer race plate

[0078] 130 Opening of outer race plate

[0079] 132 Rocker Room

[0080] 134 Rocker Room Opening

[0081] 135 Joystick Parts

[0082] 136 Inner race teeth

[0083] 138 tooth surface

[0084] 140 Inclined surface of tooth

[0085] 142 Joystick size

[0086] 144 Joystick size

[0087] 146 Spring end

[0088] 148 Surface of outer race plate

[0089] 150 Surface of outer race plate

[0090] 152 edge of surface 148

[0091] 154 edge of surface 150

[0092] 156 Inertia Ring

[0093] 158 Fasteners

[0094] 160 gap

[0095] 162 Gap

Claims

1. A one-way clutch comprising: An outer race, the outer race comprising: a first outer race plate defining a first rocker pocket; The first outer race plate comprises: a first annular flat surface facing in a first axial direction parallel to the rotational axis of the one-way clutch; and a first pocket surface, said first pocket surface being offset from said annular planar surface; and, The first pocket surface defines the first rocker pocket in a second axial direction opposite the first axial direction, and, The second outer race plate: is non-rotatably connected to the first outer race plate; and defining a second rocker recess; an inner race disposed axially between the first outer race plate and the second outer race plate; and A rocker assembly, comprising: a rocker arranged to contact the inner race and comprising: a first portion disposed in the first rocker recess; and a second portion disposed in the recess of the second rocker; a spring guide held by the first outer race plate and the second outer race plate; and, Spring, the spring: engages with the spring guide; and, In contact with the rocker.

2. The one-way clutch according to claim 1, wherein: The first portion of the rocker has a first maximum dimension in an axial direction parallel to the axis of rotation of the one-way clutch; The second portion of the rocker has a second maximum dimension in the axial direction; and The first maximum dimension is equal to the second maximum dimension.

3. The one-way clutch according to claim 1, wherein: The first portion of the rocker has a first maximum dimension in an axial direction parallel to the axis of rotation of the one-way clutch; The second portion of the rocker has a second maximum dimension in the axial direction; and The first maximum dimension is at least one quarter of the second maximum dimension; or, the first maximum dimension is at least one third of the second maximum dimension; or, the second maximum dimension is at least one quarter of the first maximum dimension; or, The second maximum dimension is at least one third of the first maximum dimension.

4. The one-way clutch according to claim 1, wherein: The first outer race plate includes a first pocket wall connecting the annular flat surface and the first pocket surface; and The first pocket wall defines the first rocker pocket in a radially outward direction orthogonal to the rotational axis.

5. The one-way clutch according to claim 1, wherein: The second outer race plate comprises: a second annular flat surface facing in a second axial direction parallel to the rotational axis of the one-way clutch; and a second pocket surface, said second pocket surface being offset from said annular planar surface; and, The second pocket surface defines the second rocker pocket in the first axial direction.

6. The one-way clutch according to claim 5, wherein: the second outer race plate including a second pocket wall connecting the annular flat surface and the second pocket surface; and The second pocket wall defines the second rocker pocket in a radially outward direction orthogonal to the rotational axis.

7. The one-way clutch according to claim 1, wherein: The spring guide includes a spring arm; and, The spring is wound around the spring arm.

8. The one-way clutch according to claim 1, wherein: The spring guide comprises: a first portion disposed in the first rocker recess; and A second portion is disposed in the second rocker recess.

9. The one-way clutch according to claim 1, wherein: The spring comprises: a first portion disposed in the first rocker recess; and A second portion is disposed in the second rocker recess.

10. The one-way clutch according to claim 1, wherein: In a locked mode of the one-way clutch, the rocker contacts the inner race to resist rotation of the outer race relative to the inner race in a first circumferential direction about an axis of rotation of the one-way clutch; In an idle mode of the one-way clutch, the outer race is rotatable relative to the inner race in a second circumferential direction opposite to the first circumferential direction; and The rocker is pivotable to switch the one-way clutch between the locking mode and the freewheeling mode.

11. A one-way clutch comprising: An outer race, the outer race comprising: A first outer race plate, the first outer race plate comprising: a first annular flat surface facing in a first axial direction parallel to the rotational axis of the one-way clutch; and a first pocket wall offset from the first annular planar surface in a second axial direction opposite the first axial direction and defining a first rocker pocket in the second axial direction; and A second outer race plate, the second outer race plate comprising: a second annular flat surface, the second annular flat surface facing in the second axial direction; and, a second pocket wall offset from the second annular planar surface in the first axial direction and defining a second rocker pocket in the first axial direction; an inner race disposed axially between the first outer race plate and the second outer race plate; and A rocker assembly, comprising: A rocker, comprising: a first portion disposed in the first rocker recess; and a second portion disposed in the recess of the second rocker; A spring guide, the spring guide: is held by the first outer race plate and the second outer race plate; and, including a spring arm; and Spring, the spring: retained by the first outer race plate and the second outer race plate; wrapping around the spring arm; and In contact with the rocker.

12. The one-way clutch according to claim 11, wherein: The spring guide comprises: a first portion disposed in the first rocker recess; and A second portion is disposed in the second rocker recess.

13. The one-way clutch according to claim 11, wherein: The spring comprises: a first portion disposed in the first rocker recess; and A second portion is disposed in the second rocker recess.

14. The one-way clutch according to claim 11, wherein: The first pocket wall defines a rocker chamber in the second axial direction; The second pocket wall defines the rocker chamber in the first axial direction; and The spring guide is entirely located in the rocker chamber.

15. The one-way clutch according to claim 11, wherein: The first outer race plate includes a third pocket wall, wherein: connecting the first annular flat surface and the first recess wall; and The first rocker pocket is defined in a circumferential direction around the rotation axis.

16. The one-way clutch according to claim 11, wherein: The second outer race plate includes a third pocket wall, wherein: connecting the second annular flat surface and the second recess wall; and The second rocker pocket is defined in a circumferential direction around the rotation axis.

17. The one-way clutch according to claim 11, wherein: The first portion of the rocker has a first extent in the second axial direction; The second portion of the rocker has a second extent in the first axial direction; and The first range is at least one third of the second range.

18. A one-way clutch comprising: An outer race, the outer race comprising: A first outer race plate, the first outer race plate comprising: a first annular flat surface facing in a first axial direction parallel to the rotational axis of the one-way clutch; and a first pocket wall offset from the first annular planar surface in a second axial direction opposite the first axial direction and defining a first rocker pocket in the second axial direction; and A second outer race plate, the second outer race plate comprising: a second annular flat surface, the second annular flat surface facing in the second axial direction; and, a second pocket wall offset from the second annular planar surface in the first axial direction and defining a second rocker pocket in the first axial direction; an inner race disposed axially between the first outer race plate and the second outer race plate; and A rocker assembly, comprising: A rocker, comprising: a first portion disposed in the first rocker recess; and a second portion disposed in the recess of the second rocker; A spring guide, the spring guide comprising: Spring arms; a first portion disposed in the first rocker recess; and a second portion disposed in the second rocker recess; and a spring wound around the spring arm, in contact with the rocker, and comprising: a first portion disposed in the first rocker recess; and A second portion is disposed in the second rocker recess.

19. The one-way clutch according to claim 18, wherein: The first portion of the rocker has a first extent in the second axial direction; The second portion of the rocker has a second extent in the first axial direction; and The first range is at least one third of the second range.

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