Multimode clutch

Abstract

The present invention relates to the field of clutch technology, in particular to a multi-mode clutch, comprising a clutch body and an actuator; the clutch body comprises an outer ring and an inner ring arranged coaxially, a control ring is arranged between the outer ring and the inner ring, the outer peripheral surface of the control ring is penetrated by a plurality of windows along its circumferential direction, a roller is arranged in each of the plurality of windows, and the inner ring wall of the outer ring has a plurality of cavities corresponding to the rollers one by one; the distance from the middle part of the cavity bottom in the cavity to the outer ring wall of the inner ring is greater than the diameter of the roller, the left side surface of the cavity gradually tilts toward the inner ring from the cavity bottom to the left side surface, and the right side surface of the cavity gradually tilts toward the inner ring from the cavity bottom to the right side surface; the multi-mode clutch of the present invention causes the rollers on the control ring to be respectively located in three different working positions in the cavity as the control ring rotates, thereby realizing that the clutch has three working modes, and the control ring is driven to rotate by the actuator using a lever, thereby realizing free switching of the three working modes of the clutch.

Description

Technical Field

[0001] The invention relates to the technical field of clutches, in particular to a multi-mode clutch. Background Art

[0002] Transmission devices are generally used to transfer the torque of the active unit to the load. Currently, transmission devices all have at least one clutch for transmitting torque. When power is input from the input shaft, if the clutch is in an engaged state, the power can be transmitted from the clutch to the output shaft. If the clutch is in a non-engaged state, the power cannot be transmitted between the input shaft and the output shaft. Roller clutch Existing roller clutches are usually used as one-way or overrunning clutches to provide a certain conditional torsional transmission relationship between the conveying shaft and the output shaft, but the working mode of this type of roller clutch is relatively single and has poor adaptability, and cannot be applied to transmission devices with complex transmission relationships. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in order to solve the problem that the working mode of the roller clutch in the prior art is relatively single, a multi-mode clutch is now provided.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a multi-mode clutch, including a clutch body and an actuator;

[0005] The clutch body comprises an outer ring and an inner ring arranged coaxially, a control ring is arranged between the outer ring and the inner ring, a plurality of windows are penetrated through the outer peripheral surface of the control ring along its circumferential direction, a roller is arranged in each of the plurality of windows, and a plurality of cavities corresponding to the rollers are arranged on the inner ring wall of the outer ring;

[0006] The distance from the middle part of the cavity bottom to the outer wall of the inner ring is greater than the diameter of the roller, the left side of the cavity gradually tilts toward the inner ring from the cavity bottom to the left side, and the right side of the cavity gradually tilts toward the inner ring from the cavity bottom to the right side;

[0007] The actuator comprises a shifting rod and a power device, and the power device drives the control ring to rotate through the shifting rod.

[0008] This solution can control the rotation of the control ring through the actuator so that the roller of the control ring is in three different working positions in the cavity, thereby realizing three working modes, which are as follows: First, when the control ring rotates until the roller on it is located in the middle part of the cavity, the roller and the outer ring are in a disengaged state, so the inner ring can rotate clockwise or counterclockwise, and no torque is transmitted between the inner ring and the outer ring; second, when the control ring rotates until the roller on it contacts the left side of the cavity, the counterclockwise rotation of the inner ring is The first is locking, i.e. when the inner ring rotates counterclockwise, the torque transmission between it and the outer ring is achieved through the rollers, while the inner ring can rotate independently in the clockwise direction, i.e. when the inner ring rotates clockwise, no torque transmission occurs between it and the outer ring; the third is that when the control ring rotates until the rollers on it come into contact with the right side of the cavity, the clockwise rotation of the inner ring is locked, i.e. when the inner ring rotates clockwise, the torque transmission between it and the outer ring is achieved through the rollers, while the inner ring can rotate independently in the counterclockwise direction, i.e. when the inner ring rotates counterclockwise, no torque transmission occurs between it and the outer ring.

[0009] Furthermore, the power device comprises a hydraulic cylinder, and a piston of the hydraulic cylinder is connected to the shift rod.

[0010] Furthermore, the hydraulic cylinder includes a shell having two opposite piston chambers, both ends of the piston being respectively inserted in the two piston chambers, a plug being fixed on the end of the two piston chambers away from the piston, and a limit spring being arranged in the piston chamber, one end of the limit spring being against the plug and the other end being against the piston. Through the arrangement of the two limit springs, the lever can be kept in the middle position after the hydraulic cylinder is depressurized, thereby ensuring that the roller in the control ring does not enter the meshing state and is in the middle position of the cavity.

[0011] Furthermore, the middle part of the lever is hinged to the shell, the head end of the lever is provided with an arc-shaped connecting part, the piston is provided with a first slot, the arc-shaped connecting part is clamped in the first slot, the control ring has a second slot, the tail end of the lever is provided with a rotating shaft part, the rotating shaft part is clamped in the second slot, when the piston moves, the piston drives the lever to swing, and the lever drives the control ring to rotate.

[0012] Specifically, the left side surface and the right side surface of the cavity are both inclined surfaces.

[0013] Furthermore, the roller is fixed in the window of the control ring by means of a spring sheet. The arrangement of the spring sheet can ensure that the roller is always in the working position, that is, ensure the stability of the position of the roller in the window.

[0014] In order to facilitate connection with the input shaft, further, the inner ring wall of the inner ring has internal splines.

[0015] Furthermore, a thrust bearing is fixed to one end of the inner ring wall on the inner ring, and the axial hole of the thrust bearing is concentrically arranged with the inner ring. The inner diameter of the axial hole is smaller than the inner diameter of the inner ring wall. When the input shaft floats, since the input shaft passes through the axial hole of the thrust bearing, the thrust bearing can play a role in centering the input shaft during its operation.

[0016] Furthermore, a pressure plate for the axial limiting control ring is fixed on the outer ring. On the one hand, the pressure plate blocks the control ring, thereby limiting the axial movement of the control ring, and on the other hand, it can serve as a riveted base for the bearing seat.

[0017] In order to facilitate the fixation of the outer ring or the transmission of torque, further, the outer ring wall of the outer ring is evenly distributed with a plurality of teeth along the circumferential direction. The provision of the plurality of teeth can improve the torque transmission effect with other components.

[0018] The beneficial effect of the present invention is that as the control ring of the multi-mode clutch of the present invention rotates, the rollers on it are respectively located in three different working positions in the cavity, thereby realizing that the clutch has three working modes, and the control ring is driven to rotate by the actuator using the lever, thereby realizing free switching of the three working modes of the clutch. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 is a three-dimensional schematic diagram of the multi-mode clutch of the present invention;

[0021] Figure 2 It is an exploded schematic diagram of a clutch body in a multi-mode clutch of the present invention;

[0022] Figure 3 is a three-dimensional schematic diagram of an actuator in a multi-mode clutch of the present invention;

[0023] Figure 4 is a cross-sectional schematic diagram of a hydraulic cylinder in a multi-mode clutch of the present invention;

[0024] Figure 5 is a three-dimensional schematic diagram of a shift lever in a multi-mode clutch of the present invention;

[0025] Figure 6 is a schematic diagram of a spring sheet in a multi-mode clutch of the present invention;

[0026] Figure 7 It is a schematic diagram of a control ring and rollers thereon in a multi-mode clutch of the present invention;

[0027] Figure 8 is a schematic cross-sectional view of a clutch body in a multi-mode clutch of the present invention;

[0028] Fig. 9 yes Figure 8 A is a partial enlarged schematic diagram;

[0029] Fig.10 It is a schematic diagram of the roller in the multi-mode clutch of the present invention when it is matched with the left side of the cavity;

[0030] Fig.11 This is a schematic diagram of the roller in the multi-mode clutch of the present invention and the right side of the cavity when it is matched

[0031] In the figure: 1, outer ring, 1-1, cavity, 1-11, cavity bottom, 1-12, left side, 1-13, right side, 1-4, teeth, 2, inner ring, 2-1, internal spline, 3, control ring, 3-1, window, 3-2, second slot, 4, roller, 5, spring sheet, 5-1, clamping part, 5-2, arc sheet, 6, hydraulic cylinder, 6-1, housing, 6-11, piston chamber, 6-2, piston, 6-21, first slot, 6-3, plug, 7, limit spring, 8, lever, 8-1, arc-shaped connecting part, 8-2, shaft part, 9, thrust bearing, 9-1, shaft hole, 10, pressure plate. DETAILED DESCRIPTION

[0032] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention, and directions and references (e.g., up, down, left, right, etc.) may only be used to help describe the features in the drawings. Therefore, the following specific embodiments are not to be taken in a limiting sense, and the scope of the subject matter claimed is limited only by the attached claims and their equivalents.

[0033] Example 1

[0034] like Figure 1-9 As shown, a multi-mode clutch comprises a clutch body and an actuator;

[0035] The clutch body comprises an outer ring 1 and an inner ring 2 which are coaxially arranged, a control ring 3 is arranged between the outer ring 1 and the inner ring 2, a plurality of windows 3-1 are penetrated through the outer peripheral surface of the control ring 3 along its circumferential direction, a roller 4 is arranged in each of the plurality of windows 3-1, and a plurality of cavities 1-1 corresponding to the rollers 4 are arranged on the inner ring wall of the outer ring 1;

[0036] The distance from the middle part of the cavity bottom 1-11 in the cavity 1-1 to the outer wall of the inner ring 2 is greater than the diameter of the roller 4. The left side 1-12 of the cavity 1-1 gradually tilts toward the inner ring 2 from the cavity bottom 1-11 to the left side 1-12. The right side 1-13 of the cavity 1-1 gradually tilts toward the inner ring 2 from the cavity bottom 1-11 to the right side 1-13.

[0037] The actuator includes a lever 8 and a power device, and the power device drives the control ring 3 to rotate through the lever 8.

[0038] The power device includes a hydraulic cylinder 6 , a piston 6 - 2 of the hydraulic cylinder 6 is connected to a shift rod 8 .

[0039] The hydraulic cylinder 6 includes a shell 6-1, which has two opposite piston chambers 6-11. The two ends of the piston 6-2 are respectively inserted in the two piston chambers 6-11. The ends of the two piston chambers 6-11 away from the piston 6-2 are fixed with plugs 6-3. Limit springs 7 are arranged in the piston chambers 6-11. One end of the limit spring 7 abuts against the plug 6-3, and the other end abuts against the piston 6-2. Through the setting of the two limit springs 7, the lever 8 can be kept in the middle position after the hydraulic cylinder 6 is depressurized, thereby ensuring that the roller 4 in the control ring 3 does not enter the meshing state and is in the middle position of the cavity 1-1.

[0040] The middle part of the lever 8 is hinged to the shell 6-1, and an arc-shaped connecting part 8-1 is provided at the head end of the lever 8. A first slot 6-21 is provided on the piston 6-2, and the arc-shaped connecting part 8-1 is clamped in the first slot 6-21. The control ring 3 has a second slot 3-2, and a rotating shaft part 8-2 is provided at the tail end of the lever 8, and the rotating shaft part 8-2 is clamped in the second slot 3-2. The first slot 6-21 is square and the second slot 3-2 is U-shaped. When the piston 6-2 moves, the piston 6-2 drives the lever 8 to swing, thereby driving the control ring 3 to rotate by the lever 8.

[0041] The left side surface 1-12 and the right side surface 1-13 of the cavity 1-1 are both inclined surfaces.

[0042] The roller 4 is fixed in the window 3-1 of the control ring 3 by a spring sheet 5. The setting of the spring sheet 5 can ensure that the roller 4 is always in the working position, that is, ensure the stability of the position of the roller 4 in the window 3-1. A spring sheet 5 is set at the position between two adjacent windows 3-1 on the control ring 3. The spring sheet 5 includes a clamping portion 5-1. Two arc sheets 5-2 are fixed on both sides of the clamping portion 5-1. The clamping portion 5-1 is fixed at the position between two adjacent windows 3-1 on the control ring 3. The arc sheet 5-2 is against the side of the roller 4 in the window 3-1 where it is located, and the clamping portion 5-1 is in contact with the inner ring wall of the outer ring 1.

[0043] The inner ring wall of the inner ring 2 has inner splines 2 - 1 .

[0044] A thrust bearing 9 is fixed to one end of the inner ring wall on the inner ring 2. The axial hole 9-1 of the thrust bearing 9 is concentrically arranged with the inner ring 2. The inner diameter of the axial hole 9-1 is smaller than the inner diameter of the inner ring wall. When the input shaft floats, since the input shaft passes through the axial hole 9-1 of the thrust bearing 9, the thrust bearing 9 can play a role in centering the input shaft during its operation.

[0045] A pressure plate 10 for axially limiting the control ring 3 is fixed on the outer ring 1. On the one hand, the pressure plate 10 blocks the control ring 3, thereby limiting the axial movement of the control ring 3, and on the other hand, it can serve as a riveted base for the bearing seat.

[0046] The outer ring wall of the outer ring 1 is evenly distributed with a plurality of teeth 1-4 along the circumferential direction. The arrangement of the plurality of teeth 1-4 can improve the torque transmission effect with other components.

[0047] The working principle of the above multi-mode clutch is as follows:

[0048] The input shaft is connected to the inner ring 2, the output shaft is connected to the outer ring 1, the input shaft passes through the shaft hole 9-1 of the thrust bearing 9 and the external spline on the input shaft matches the internal spline 2-1 in the inner ring 2, and the hydraulic cylinder 6 is fixed on the equipment used for the multi-friction clutch;

[0049] like Fig. 9 As shown, when the piston 6-2 of the hydraulic cylinder 6 is in the middle position, when the control ring 3 rotates until the roller 4 thereon is located in the middle part of the cavity 1-1, at this time, the roller 4 and the outer ring 1 are in a disengaged state, so the inner ring 2 can rotate clockwise or counterclockwise, and no torque is transmitted between the inner ring 2 and the outer ring 1;

[0050] like Fig.10 As shown, when the piston 6-2 of the hydraulic cylinder 6 moves to the right, the piston 6-2 drives the lever 8 to swing, so that the lever 8 drives the control ring 3 to rotate to the left, until the control ring 3 rotates until the roller 4 thereon contacts the left side surface 1-12 of the cavity 1-1, and the clutch body is in a meshing state. At this time, the counterclockwise rotation of the inner ring 2 is locked, that is, when the inner ring 2 rotates counterclockwise, the torque transmission between the inner ring 2 and the outer ring 1 is realized through the roller 4, while the inner ring 2 can rotate independently in the clockwise direction, that is, when the inner ring 2 rotates clockwise, no torque transmission occurs between the inner ring 2 and the outer ring 1;

[0051] like Fig.11As shown, when the piston 6-2 of the hydraulic cylinder 6 moves to the left, the piston 6-2 drives the lever 8 to swing, thereby the lever 8 drives the control ring 3 to rotate to the right, until the control ring 3 rotates until the roller 4 thereon contacts with the right side surface 1-13 of the cavity 1-1, and the clutch body is in a meshing state. At this time, the clockwise rotation of the inner ring 2 is locked, that is, when the inner ring 2 rotates clockwise, the torque transmission between the inner ring 2 and the outer ring 1 is realized through the roller 4, and the inner ring 2 can rotate independently in the counterclockwise direction, that is, when the inner ring 2 rotates clockwise, no torque transmission occurs between the inner ring 2 and the outer ring 1.

[0052] The above-mentioned ideal embodiments of the present invention are for inspiration. Through the above-mentioned description, relevant staff can make various changes and modifications without departing from the technical idea of ​​the present invention. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A multi-mode clutch, characterized in that: It includes a clutch body and an actuator; The clutch body comprises an outer ring (1) and an inner ring (2) which are coaxially arranged, a control ring (3) being arranged between the outer ring (1) and the inner ring (2), a plurality of windows (3-1) penetrating the outer peripheral surface of the control ring (3) along its circumferential direction, a roller (4) being arranged in each of the plurality of windows (3-1), and a plurality of cavities (1-1) corresponding one to one with the rollers (4) being arranged on the inner ring wall of the outer ring (1); The distance from the middle part of the cavity bottom (1-11) in the cavity (1-1) to the outer ring wall of the inner ring (2) is greater than the diameter of the roller (4); the left side surface (1-12) of the cavity (1-1) gradually inclines toward the inner ring (2) from the cavity bottom (1-11) to the left side surface (1-12); and the right side surface (1-13) of the cavity (1-1) gradually inclines toward the inner ring (2) from the cavity bottom (1-11) to the right side surface (1-13); The actuator comprises a lever (8) and a power device, wherein the power device drives the control ring (3) to rotate via the lever (8); The roller (4) is fixed in the window (3-1) of the control ring (3) via a spring sheet (5); A spring sheet (5) is provided at a position between two adjacent windows (3-1) on the control ring (3), the spring sheet (5) comprising a clamping portion (5-1), two arc sheets (5-2) being fixed on both sides of the clamping portion (5-1), the clamping portion (5-1) being fixed at a position between two adjacent windows 3-1 on the control ring (3), and the arc sheets (5-2) being against the side of the roller (4) in the window (3-1) where the arc sheets (5-2) are located; The power device comprises a hydraulic cylinder (6), a piston (6-2) of the hydraulic cylinder (6) being connected to a shifting rod (8); The hydraulic cylinder (6) comprises a housing (6-1), the housing (6-1) having two opposed piston chambers (6-11), the two ends of the piston (6-2) being respectively inserted into the two piston chambers (6-11), the ends of the two piston chambers (6-11) away from the piston (6-2) being fixed with plugs (6-3), the piston chambers (6-11) being provided with limit springs (7), one end of the limit springs (7) being against the plug (6-3), and the other end being against the piston (6-2); by providing the two limit springs (7), the lever (8) can be kept in a middle position after the hydraulic cylinder (6) is depressurized; When the piston (6-2) of the hydraulic cylinder (6) is in the middle position, the control ring (3) rotates until the roller (4) thereon is located in the middle of the cavity (1-1), at which time the roller (4) and the outer ring (1) are in a disengaged state, the inner ring (2) can rotate clockwise or counterclockwise, and no torque is transmitted between the inner ring (2) and the outer ring (1); When the piston (6-2) of the hydraulic cylinder (6) drives the lever (8) to swing, the lever (8) drives the control ring (3) to rotate leftward until the control ring (3) rotates until the roller (4) thereon contacts the left side surface (1-12) of the cavity (1-1), and the clutch body is in a meshing state. When the inner ring (2) rotates counterclockwise, torque is transmitted to the outer ring (1) through the roller (4), while when the inner ring (2) rotates clockwise, no torque is transmitted to the outer ring (1); When the piston (6-2) of the hydraulic cylinder (6) drives the lever (8) to swing, the lever (8) drives the control ring (3) to rotate rightward until the control ring (3) rotates until the roller (4) thereon contacts the right side surface (1-13) of the cavity (1-1). The clutch body is in an engaged state. When the inner ring (2) rotates clockwise, torque is transmitted to the outer ring (1) through the roller (4), while when the inner ring (2) rotates clockwise, no torque is transmitted to the outer ring (1).

2. The multi-mode clutch according to claim 1, characterized in that: The middle part of the lever (8) is hinged to the housing (6-1); the head end of the lever (8) is provided with an arc-shaped connecting portion (8-1); the piston (6-2) is provided with a first clamping groove (6-21); the arc-shaped connecting portion (8-1) is clamped in the first clamping groove (6-21); the control ring (3) has a second clamping groove (3-2); the tail end of the lever (8) is provided with a rotating shaft portion (8-2); the rotating shaft portion (8-2) is clamped in the second clamping groove (3-2).

3. The multi-mode clutch according to claim 1, characterized in that: The left side surface (1-12) and the right side surface (1-13) of the cavity (1-1) are both inclined surfaces.

4. The multi-mode clutch according to claim 1, characterized in that: The inner ring wall of the inner ring (2) has an inner spline (2-1).

5. The multi-mode clutch according to claim 1, characterized in that: A thrust bearing (9) is fixed to one end of the inner ring wall on the inner ring (2); an axial hole (9-1) of the thrust bearing (9) is arranged concentrically with the inner ring (2); and an inner diameter of the axial hole (9-1) is smaller than an inner diameter of the inner ring wall.

6. The multi-mode clutch according to claim 1, characterized in that: A pressure plate (10) for an axial limit control ring (3) is fixed on the outer ring (1).

7. The multi-mode clutch according to claim 1, characterized in that: The outer ring wall of the outer ring (1) has a plurality of teeth (1-4) evenly distributed along the circumferential direction.

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