CN210034225U - Bidirectional controllable overrunning clutch - Google Patents
Bidirectional controllable overrunning clutch Download PDFInfo
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- CN210034225U CN210034225U CN201920553023.3U CN201920553023U CN210034225U CN 210034225 U CN210034225 U CN 210034225U CN 201920553023 U CN201920553023 U CN 201920553023U CN 210034225 U CN210034225 U CN 210034225U
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Abstract
The utility model provides a two-way controllable formula freewheel clutch, by holder drive assembly, roller executive component and control assembly constitute, holder drive assembly's the terminal coaxial fixed connection of holder with roller executive component's holder, among the roller executive component, form wide fusiform space in the middle of the narrow in a plurality of both ends between the outer wall of inner circle and the inner wall of outer lane, the circumferencial direction perpendicular to its terminal surface of holder is equipped with a plurality of frames of dialling, the holder suit is between inner circle and outer lane, the frame of dialling of holder corresponds with fusiform space one-to-one, the roller correspondence is installed in the frame of dialling of holder, under the rotatory drive of holder, the roller is along the circumferencial direction motion in the fusiform space between the inner circle that corresponds and outer lane, control assembly and holder drive assembly control connection, drive holder is along axial rotation with control holder drive assembly. Bidirectional controllable formula freewheel clutch stable performance is reliable, simple structure is compact and control performance is good.
Description
Technical Field
The utility model belongs to the technical field of clutch among the mechanical type automatic gearbox and control thereof, concretely relates to two-way controllable freewheel clutch.
Background
With the gradual maturity of the pure electric vehicle market, the market puts higher requirements on the comfort, the dynamic property and the economy of the pure electric vehicle. In order to meet diversified use requirements, the multi-gear driving system of the electric vehicle is an important development trend of pure electric vehicles nowadays.
Automatic mechanical transmissions have been developed based on manual transmissions. The mechanical automatic transmission keeps the advantages of high transmission efficiency, low cost, convenient operation and the like of the traditional manual transmission and is widely applied.
Aiming at the performance characteristics of the pure electric vehicle, Chinese patent: a two-gear mechanical automatic transmission for a pure electric vehicle based on a clutch is provided in an electric vehicle unpowered interruption gear shifting gearbox and a gear shifting control method (CN 105864368A). According to the technical scheme, the bidirectional controllable overrunning clutch and the friction plate dry clutch are combined for use, so that unpowered interruption switching of two gears is realized. The automatic control of the bidirectional controllable overrunning clutch is an important technology of the transmission, and the controllability of the bidirectional controllable overrunning clutch directly determines whether the gearbox can realize reverse gear.
Aiming at the gearbox, the Chinese patent: a bidirectional controllable overrunning clutch (CN104595381B) is provided. The technical scheme of the patent utilizes an electromagnetic coil to drive a control mechanism to realize four working modes of forward one-way overrunning, reverse one-way overrunning, two-way overrunning and two-way wedging. The utility model discloses a clutch parts quantity more, require greatly to axial space, arrange the difficulty, the degree of coupling is high between each part, is difficult to carry out product modification and maintenance. In addition, this utility model the clutch do not set up installation sensor and detect actuating mechanism position, thereby in case break down, can't diagnose the trouble fast and make effective processing, the reliability of system is low.
Disclosure of Invention
To the defect that exists among the above-mentioned prior art, the utility model provides a two-way controllable formula freewheel clutch and control method thereof, the utility model discloses stable performance is reliable, simple structure is compact and control performance is good, combines the description attached drawing, the technical scheme of the utility model as follows:
a bidirectional controllable overrunning clutch comprises a retainer driving component, a roller executing component and a control component;
the control tail end of the retainer driving assembly is coaxially and fixedly connected with a retainer 4 of the roller executing assembly;
the roller executing assembly comprises an inner ring 1, an outer ring 2, rollers 3 and a retainer 4, wherein the outer ring 2 is coaxially sleeved outside the inner ring 1, a plurality of shuttle-shaped spaces with narrow two ends and wide middle are formed between the outer wall of the inner ring 1 and the inner wall of the outer ring 2, the retainer 4 is of a cylindrical frame structure, a plurality of poking frames are arranged on the circumferential direction of the retainer 4 perpendicular to the end surface of the retainer 4, the retainer 4 is sleeved between the inner ring 1 and the outer ring 2, the poking frames of the retainer 4 correspond to the shuttle-shaped spaces formed between the outer wall of the inner ring 1 and the inner wall of the outer ring 2 one by one, the rollers 3 are correspondingly arranged in the poking frames of the retainer 4, and the rollers 3 move in the corresponding shuttle-shaped spaces between the inner ring 1 and the outer ring 2 along;
the control component is in control connection with the holder driving component to control the holder driving component to drive the holder 4 to rotate along the axial direction.
Furthermore, the retainer driving assembly consists of a driving motor 10, a worm and gear reduction box 9, a flexible coupling 7, a driving gear 6 and a driven gear 11;
an output shaft of the driving motor 10 is coaxially and fixedly connected with an input shaft of the worm and gear reduction box 9, an output shaft of the worm and gear reduction box 9 is coaxially connected with a gear shaft of the driving gear 6 through the flexible coupling 7, the worm and gear reduction box 9 is fixed on a shell of the transmission case, and the driving gear 6 is meshed with a driven gear 11 coaxially fixed on the end face of the retainer 4.
Furthermore, the control assembly consists of a controller, a shading disc 5 and an infrared correlation photoelectric sensor 8;
the control signal output end of the controller is connected with the control signal input end of the driving motor 10;
the infrared correlation photoelectric sensor 8 is arranged on the outer surface of the shell on one side of the output end of the worm gear reduction box 9, the shading disc 5 is coaxially arranged on the output shaft of the worm gear reduction box 9, the shading disc 5 and the infrared correlation photoelectric sensor 8 are installed in a matching way, when the shading disc 5 is driven by the output shaft of the worm gear reduction box 9 to rotate along the axial direction, the infrared correlation photoelectric sensor 8 is completely shaded by the shading disc 5 so as to prevent the infrared correlation photoelectric sensor 8 from receiving and transmitting infrared light signals, in the process that the infrared correlation photoelectric sensor 8 moves out of the covering area of the shading disc 5 so as to recover receiving and transmitting infrared light signals, the retainer 4 drives the roller 3 to be driven to the other end of the shuttle-shaped space from one end of the corresponding shuttle-shaped space under the driving of the retainer driving assembly, the signal output end of the infrared correlation photoelectric sensor 8 is connected, the change condition of the rotating angle of the output shaft of the worm gear reduction box 9 in the retainer driving assembly is identified by reading a detection signal sent by the infrared correlation photoelectric sensor 8.
Further, the retainer driving assembly consists of a push-pull electromagnet 15, a rigid coupling 14, a connecting rod 13, a pin 12 and a strip-shaped groove plate 16;
the push-pull rod of the output end of the push-pull electromagnet 15 is rigidly connected with one end of the connecting rod 13 through the rigid coupling 14, the push-pull electromagnet 15 is fixed on the shell of the transmission case, the pin 12 is fixedly installed in a counter bore at the other end of the connecting rod 13, the strip-shaped groove plate 16 is fixedly installed on the outer edge of the end face of the retainer 4, the length direction of the strip-shaped groove plate 16 is radially arranged along the end face of the retainer 4, and the pin 12 is connected with the strip-shaped groove on the strip-shaped groove.
Further, the control assembly comprises a controller, and a control signal output end of the controller is connected with a control signal receiving end of the push-pull electromagnet 15.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. bidirectional controllable formula freewheel clutch has reduced the complexity of gearbox axial spare part, has shortened gearbox axial dimensions, simple structure, and the part is few, and is with low costs, easily arranges, maintains.
2. Two-way controllable formula freewheel clutch has arranged infrared correlation photoelectric sensor and has been used for detecting the actuating mechanism position, can carry out effectual failure diagnosis, has improved the reliability of system.
3. Bidirectional controllable formula freewheel clutch is independent from overall structure with holder drive assembly, has realized the structure modularization, and then can realize that the same executive component joins in marriage different drive assembly, or the different executive component of same drive assembly drive, has made things convenient for the design of the bidirectional controllable clutch of the different specifications of different grade type.
4. Spare part that drive assembly part of two-way controllable freewheel clutch adopted, include: the gear box comprises a pinion, a flexible coupling, a worm and gear reduction box, a driving motor and the like, and is characterized in that on the basis of the existing unpowered-interruption gear-shifting gearbox of the electric vehicle, original parts are omitted, corresponding parts are additionally arranged, the processing technology of the parts is mature, the parts work stably and reliably, even existing batch parts can be directly applied, and the development and use cost is greatly reduced.
5. Among the two-way controllable freewheel clutch, the gear drive subassembly is owing to adopted flexible coupling for at the retainer pivoting in-process, driving motor need overcome the resistance of flexible coupling spring and carry out the energy storage, and this part energy can compensate the clearance among each drive disk assembly after the motor stops exporting, with the reliable laminating of roller between the assurance inner lane and outer lane.
Drawings
Fig. 1 is an axonometric view of the overall structure of the two-way controllable overrunning clutch in embodiment 1 of the present invention;
fig. 2 is an exploded schematic view of a cage driving assembly (not including a driven gear) of the bi-directional controllable overrunning clutch according to embodiment 1 of the present invention;
fig. 3 is an exploded schematic view of a roller actuator assembly of the bi-directional controllable overrunning clutch according to embodiment 1 of the present invention;
fig. 4 is an axonometric view of the overall structure of the two-way controllable overrunning clutch in embodiment 2 of the present invention;
fig. 5 is an exploded schematic view of a cage driving assembly (not including a bar-shaped slot plate) of the bi-directional controllable overrunning clutch according to embodiment 2 of the present invention;
fig. 6 is an exploded schematic view of a roller actuator assembly of the bi-directional controllable overrunning clutch according to embodiment 2 of the present invention;
FIG. 7 is a schematic diagram of a forward one-way overrunning state of a roller actuating assembly in the two-way controllable overrunning clutch of the present invention;
FIG. 8 is a schematic diagram of a roller actuating assembly in a reverse one-way overrunning state in the two-way controllable overrunning clutch of the present invention;
fig. 9a is a schematic view of a rotation state of the anti-dazzling screen 5 of the bi-directional controllable overrunning clutch according to embodiment 1 of the present invention;
fig. 9b is a schematic view of a rotation state of the shading disc 5 of the bi-directional controllable overrunning clutch according to embodiment 1 of the present invention;
fig. 9c is a schematic view of a rotation state three of the shading disc 5 of the bi-directional controllable overrunning clutch according to embodiment 1 of the present invention;
fig. 9d is a schematic view illustrating a rotation state of the shading disc 5 of the bi-directional controllable overrunning clutch according to embodiment 1 of the present invention;
fig. 9e is a schematic view of a rotation state five of the shading disc 5 of the bi-directional controllable overrunning clutch according to embodiment 1 of the present invention.
In the figure:
1-inner ring, 2-outer ring, 3-roller, 4-retainer,
5-a shading disc, 6-a driving gear, 7-a flexible coupling, 8-an infrared correlation photoelectric sensor,
9-worm gear reduction box, 10-driving motor, 11-driven gear, 12-pin,
13-connecting rod, 14-rigid coupling, 15-push-pull electromagnet and 16-strip groove plate.
Detailed Description
For further explaining the technical scheme of the utility model, combine the description attached drawing, the concrete implementation of the utility model is as follows:
example 1
The embodiment discloses a bidirectional controllable overrunning clutch which comprises a retainer driving assembly, a roller executing assembly and a control assembly.
As shown in fig. 1 and 2, the holder driving assembly is composed of a driving motor 10, a worm gear reduction box 9, a flexible coupling 7, a driving gear 6 and a driven gear 11. The driving motor 10 is used as a power source of the retainer driving assembly to output a rotary driving force outwards, an output shaft of a power output end of the driving motor is coaxially and fixedly connected with an input shaft of the worm gear reduction box 9, an output shaft of the worm gear reduction box 9 is coaxially connected with a gear shaft of the driving gear 6 through the flexible coupling 7, and the worm gear reduction box 9 is fixed on a gearbox shell. The driving gear 6 is meshed with a driven gear fixed on the end face of the retainer 4.
In the holder driving assembly, the driving motor 10 provides energy through a vehicle-mounted power supply, a control signal input end of the driving motor 10 is connected with a control signal output end of a controller in the control assembly, and the controller controls the output torque of the driving motor 10 by controlling the working voltage of the driving motor 10; an output shaft of the driving motor 10 drives an input shaft of the worm gear reduction box 9 to rotate at a high speed, and power is transmitted through the worm gear reduction box 9 and then is output from the output shaft of the worm gear reduction box 9 in a low-speed mode.
In the retainer driving assembly, the flexible coupling 7 is connected with the worm gear reduction box 9 and the driving gear 6, so that in the rotating process of the driving gear 6, the driving motor 10 needs to overcome the spring resistance on the flexible coupling 7 for energy storage, and the part of energy can compensate the gaps in each transmission part after the driving motor 10 stops outputting power, so that the rollers 3 are reliably attached between the inner ring 1 and the outer ring 2 in the roller executing assembly.
As shown in fig. 1 and 3, the roller actuator assembly is composed of an inner ring 1, an outer ring 2, rollers 3, and a cage 4. The outer wall of the inner ring 1 is a smooth and continuous cylindrical surface, seven arc-shaped grooves are uniformly distributed on the inner wall of the outer ring 2 along the radial direction, the outer ring 2 is coaxially sleeved on the outer side of the inner ring 1, and seven shuttle-shaped spaces with two narrow ends and a wide middle are formed between the outer wall of the inner ring 1 and the inner wall of the outer ring 2, wherein the two narrow ends mean that the radial distance between the outer wall of the inner ring 1 and the inner wall of the outer ring 2 at the positions of the two ends of the shuttle-shaped space along the circumferential direction is smaller, so that the inner ring 1 and the outer ring 2 are locked by one-way wedging along the circumferential direction when the roller 3 moves to the two ends of the shuttle-shaped space, and the one-way transmission of power between the inner ring 1 and the outer ring 2 is realized, wherein one; the term "intermediate width" means that the radial distance between the outer wall of the inner ring 1 and the inner wall of the outer ring 2 at the middle position of the shuttle-shaped space in the circumferential direction is large, so that when the roller 3 moves to the middle of the shuttle-shaped space, the inner ring 1 and the outer ring 2 can rotate freely and do not have power transmission. The retainer 4 is of a cylindrical frame structure, seven groups of poking frames are arranged on the circumferential direction of the retainer 4 perpendicular to the end face of the retainer, the retainer 4 is sleeved between the inner ring 1 and the outer ring 2, and the poking frames of the retainer 4 correspond to shuttle-shaped spaces formed between the outer wall of the inner ring 1 and the inner wall of the outer ring 2 one by one. The rollers 3 are correspondingly arranged with the shifting frames of the retainer 4 one by one, the axial direction of the rollers 3 is parallel to the axial direction of the retainer 4 and is arranged in the shifting frames of the retainer 4, and the rollers 3 move along the circumferential direction in the corresponding shuttle-shaped space between the inner ring 1 and the outer ring 2 under the drive of the rotation of the retainer 4.
As shown in fig. 7, in the roller actuating assembly, the position of the roller 3 is at the left end of the shuttle-shaped space between the inner ring 1 and the outer ring 2, namely, the reverse operation locking end, when the outer ring 2 is relatively fixed and the inner ring 1 rotates clockwise, the roller 3 will move to the middle wider position under the action of friction force, and at this time, the inner ring 1 and the outer ring 2 can rotate freely relative to each other, namely, the inner ring 1 can rotate freely in the clockwise direction relative to the outer ring 2; when the outer ring 2 is relatively fixed and the inner ring 1 rotates anticlockwise, the roller 3 continues to move towards the left end of the shuttle-shaped space shown in the figure under the action of friction force, the roller 3 is wedged between the inner ring 1 and the outer ring 2 at the moment, the inner ring 1 and the outer ring 2 are locked, and the inner ring 1 cannot rotate anticlockwise relative to the outer ring 2 at the moment, so that the roller executing component is in a forward unidirectional overrunning state, namely the bidirectional controllable overrunning clutch is in a forward unidirectional overrunning mode.
As shown in fig. 8, in the roller actuating assembly, the position of the roller 3 is at the right end of the shuttle-shaped space between the inner ring 1 and the outer ring 2, namely, the forward operation locking end, when the outer ring 2 is relatively fixed and the inner ring 1 rotates counterclockwise, the roller 3 will move to the middle wider position under the action of friction force, and at this time, the inner ring 1 and the outer ring 2 can rotate freely relative to each other, namely, the inner ring 1 can rotate freely in the counterclockwise direction relative to the outer ring 2; when the outer ring 2 is relatively fixed and the inner ring 1 rotates clockwise, the roller 3 continues to move towards the right end of the shuttle-shaped space shown in the figure under the action of friction force, at the moment, the roller 3 is wedged between the inner ring 1 and the outer ring 2, the inner ring 1 and the outer ring 2 are locked, at the moment, the inner ring 1 cannot rotate clockwise relative to the outer ring 2, and therefore the roller executing assembly is in a reverse one-way overrunning state, namely the two-way controllable overrunning clutch is in a reverse one-way overrunning mode.
As shown in fig. 1, the driven gear 11 in the cage driving assembly is coaxially disposed with the end surface of the cage 4 in the roller actuating assembly, in this embodiment 1, the driven gear 11 and the outer end surface of the cage 4 are coaxially disposed in an integral structure, and the driven gear 11 and the cage 4 move synchronously, so that under the driving of the driving motor 10, the cage 4 rotates synchronously with the driven gear 11 and further stirs the rollers 3 to move in the circumferential direction in the corresponding shuttle-shaped space between the inner ring 1 and the outer ring 2 through the shifting frame.
As shown in fig. 1 and 2, the control assembly is composed of a controller (not shown), a shutter disk 5 and an infrared opposed photoelectric sensor 8. The control signal output end of the controller is connected with the control signal receiving end of the driving motor 10, and the signal output end of the infrared correlation photoelectric sensor 8 is connected with the signal input end of the controller. The infrared correlation photoelectric sensor 8 is arranged on the outer surface of the shell on one side of the output end of the worm gear reduction box 9. The anti-dazzling screen 5 is an integrated structure consisting of an intermediate disc and an anti-dazzling outer edge, a D-shaped hole is formed in the center of the intermediate disc of the anti-dazzling screen 5, the anti-dazzling screen 5 is coaxially positioned and installed on an output shaft of the worm and gear reduction box 9 through the D-shaped hole of the central disc, the anti-dazzling outer edge of the anti-dazzling screen 5 is in a fan shape, the anti-dazzling outer edge is coaxially arranged on the circumference of the central disc, the anti-dazzling screen 5 and the infrared correlation photoelectric sensor 8 are installed in a matching mode, when the anti-dazzling screen 5 is driven by the output shaft of the worm and gear reduction box 9 to rotate axially, as shown in figures 9a to 9e, the anti-dazzling outer edge of the anti-dazzling screen 5 rotates axially, the anti-dazzling outer edge of the anti-dazzling screen 5 gradually moves to a position between an infrared light emitting, the shading disc 5 will block the transmission and reception of the infrared light in the infrared correlation photoelectric sensor 8, at this time, the infrared correlation photoelectric sensor 8 will send a detection signal a to the controller, along with the continuous axial rotation of the shading outer edge of the shading disc 5, the shading outer edge of the shading disc 5 gradually leaves between the infrared light transmitting end and the infrared light receiving end of the infrared correlation photoelectric sensor 8, when the infrared light transmitting end and the infrared light receiving end of the infrared correlation photoelectric sensor 8 start to move out of the shading outer edge covering area of the shading disc 5 (as shown in fig. 9 d), the infrared correlation photoelectric sensor 8 will continue the transmission and reception of the infrared light, at this time, the infrared correlation photoelectric sensor 8 will send a detection signal B to the controller, the controller can identify the rotation angle change information of the output shaft of the worm gear reduction box 9 by reading the detection signal sent by the infrared correlation photoelectric sensor 8, therefore, whether the roller 3 is shifted to an accurate wedging position or not under the driving of the retainer driving assembly of the retainer 4 is judged, the roller 3 is ensured to be reliably attached between the inner ring 1 and the outer ring 2, and the locking state of the bidirectional overrunning clutch is finally judged. When the infrared correlation photoelectric sensor 8 sends a detection signal A to a detection signal B, the roller 3 is just driven to the other end of the corresponding shuttle-shaped space from one end of the corresponding shuttle-shaped space by the retainer 4. The sector angle of the shading outer edge of the shading disc 5 is determined according to the diameter of the shading disc 5, the transmission ratio of the driving gear 6 and the driven gear 11 and the angle occupied by the shuttle-shaped space between the inner ring 1 and the outer ring 2.
The working process of the bidirectional controllable overrunning clutch comprises the following steps: a forward unidirectional override mode and a reverse unidirectional override mode:
the specific process of the forward one-way overrunning mode is as follows:
as shown in fig. 1, in the bidirectional controllable overrunning clutch, after a controller receives a forward unidirectional overrunning command sent by a vehicle TCU (automatic transmission control unit), the controller sends a control command to a driving motor 10 to control the driving motor 10 to act, so that an output shaft of a worm and gear reduction box 9 rotates clockwise (the observation direction at this time is the top view direction of fig. 1) under the driving of the driving motor 10, a driving gear 6 drives a driven gear 11 to rotate counterclockwise under the driving of an output shaft of the worm and gear reduction box 9, a retainer 4 rotates counterclockwise synchronously under the driving of the driven gear 11, a pulling frame of the retainer 4 drives a roller 3 to move counterclockwise to a reverse operation locking end of a shuttle-shaped space in the circumferential direction in the shuttle-shaped space corresponding between an inner ring 1 and an outer ring 2, and during the clockwise rotation of the output shaft of the worm and gear reduction box 9, as shown in fig. 9a-9e, the light-shielding disc 5 rotates clockwise, the light-shielding outer edge of the light-shielding disc 5 enters between the infrared light emitting end and the infrared light receiving end of the infrared correlation photoelectric sensor 8 from the beginning, and gradually moves to a position away from between the infrared light emitting end and the infrared light receiving end of the infrared correlation photoelectric sensor 8, when the light-shielding outer edge of the light-shielding disc 5 completely leaves between the infrared light emitting end and the infrared light receiving end of the infrared correlation photoelectric sensor 8, as shown in fig. 7, the roller 3 is shifted by the shift frame of the holding frame 4 to move to the reverse operation locking end of the shuttle-shaped space, at this time, the controller receives the detection signal sent by the infrared correlation photoelectric sensor 8 and controls the driving motor 10 to stop working, at this time, the outer ring 2 is fixed, and under the wedge-tightening force of the roller 3, the inner ring 1 is locked relatively to the outer, and the inner ring 1 freely rotates relative to the outer ring 2 along the clockwise direction, so that a positive one-way overrunning mode is realized.
The specific process of the reverse one-way overrunning mode is as follows:
as shown in fig. 1, in the bidirectional controllable overrunning clutch, after a controller receives a reverse unidirectional overrunning command sent by a vehicle TCU (automatic transmission control unit), the controller sends a control command to a driving motor 10 to control the driving motor 10 to act, so that an output shaft of a worm and gear reduction box 9 rotates counterclockwise (the viewing direction at this time is the top view direction of fig. 1) under the driving of the driving motor 10, a driving gear 6 drives a driven gear 11 to rotate clockwise under the driving of an output shaft of the worm and gear reduction box 9, a retainer 4 rotates clockwise synchronously under the driving of the driven gear 11, a pulling frame of the retainer 4 drives a roller 3 to move clockwise to a forward operation locking end of a shuttle-shaped space in a circumferential direction in the shuttle-shaped space corresponding between an inner ring 1 and an outer ring 2, and in the counterclockwise rotation process of the output shaft of the worm and gear reduction box 9, as shown in fig. 9a-9e, the light-shielding outer edge of the light-shielding disc 5 gradually moves from the beginning to enter between the infrared light emitting end and the infrared light receiving end of the infrared correlation photoelectric sensor 8 to leave between the infrared light emitting end and the infrared light receiving end of the infrared correlation photoelectric sensor 8, when the light-shielding outer edge of the light-shielding disc 5 completely leaves between the infrared light emitting end and the infrared light receiving end of the infrared correlation photoelectric sensor 8, as shown in fig. 8, the roller 3 is shifted down by the shift frame of the holder 4 to move to the forward operation locking end of the shuttle-shaped space, at this time, the controller will receive the detection signal sent by the infrared correlation photoelectric sensor 8 and control the driving motor 10 to stop working, at this time, the outer ring 2 is fixed, under the wedge-tightening effect of the ball 3, the inner ring 1 is locked relatively to the outer ring 2 in the clockwise direction, and the inner ring 1 is free to rotate counterclockwise to the outer, and realizing a reverse one-way overrunning mode.
Example 2
The embodiment discloses a bidirectional controllable overrunning clutch which comprises a retainer driving assembly, a roller executing assembly and a control assembly.
As shown in fig. 4 and 5, the holder driving assembly is composed of a push-pull electromagnet 15, a rigid coupling 14, a connecting rod 13, a pin 12 and a strip-shaped groove plate 16. The push-pull electromagnet 15 is used as a power source of the holder driving assembly to output a linear push-pull driving force outwards, a push-pull rod at the output end of the push-pull electromagnet 15 is rigidly connected with one end of a connecting rod 13 through a rigid coupling 14, the push-pull electromagnet 15 is fixed on the gearbox shell, a counter bore is formed in the other end of the connecting rod 13, a pin 12 is fixedly installed in the counter bore in the end portion of the connecting rod 13 through interference fit, a strip-shaped groove plate 16 is fixedly installed on the outer edge of the end face of the holder 4, the length direction of a strip-shaped groove of the strip-shaped groove plate 16 is radially arranged along the end face of the holder 4, the pin 12 is connected with the strip-shaped groove on the strip-shaped groove plate 16 in a matching mode, and under the push-pull driving of the push-pull electromagnet 15, the.
In the retainer driving assembly, the push-pull electromagnet 15 provides energy through a vehicle-mounted power supply, a control signal input end of the push-pull electromagnet 15 is connected with a control signal output end of a controller in the control assembly, and the controller controls the push-pull force output by the push-pull electromagnet 15 along the axial direction by controlling the working voltage of the push-pull electromagnet 15; when a push-pull rod at the power output end of the push-pull electromagnet 15 moves along a straight line, power is transmitted to the retainer 4 through the rigid coupling 14, the connecting rod 13, the pin 12 and the strip-shaped groove plate 16 in sequence, and then the retainer 4 is controlled to rotate along the axial direction of the retainer.
As shown in fig. 4 and 6, the roller actuator assembly is composed of an inner ring 1, an outer ring 2, rollers 3, and a cage 4. The outer wall of the inner ring 1 is a smooth and continuous cylindrical surface, seven arc-shaped grooves are uniformly distributed on the inner wall of the outer ring 2 along the radial direction, the outer ring 2 is coaxially sleeved on the outer side of the inner ring 1, and seven shuttle-shaped spaces with two narrow ends and a wide middle are formed between the outer wall of the inner ring 1 and the inner wall of the outer ring 2, wherein the two narrow ends mean that the radial distance between the outer wall of the inner ring 1 and the inner wall of the outer ring 2 at the positions of the two ends of the shuttle-shaped space along the circumferential direction is smaller, so that the inner ring 1 and the outer ring 2 are locked by one-way wedging along the circumferential direction when the roller 3 moves to the two ends of the shuttle-shaped space, and the one-way transmission of power between the inner ring 1 and the outer ring 2 is realized, wherein one; the term "intermediate width" means that the radial distance between the outer wall of the inner ring 1 and the inner wall of the outer ring 2 at the middle position of the shuttle-shaped space in the circumferential direction is large, so that when the roller 3 moves to the middle of the shuttle-shaped space, the inner ring 1 and the outer ring 2 can rotate freely and do not have power transmission. The retainer 4 is of a cylindrical frame structure, seven groups of poking frames are arranged on the circumferential direction of the retainer 4 perpendicular to the end face of the retainer, the retainer 4 is sleeved between the inner ring 1 and the outer ring 2, and the poking frames of the retainer 4 correspond to shuttle-shaped spaces formed between the outer wall of the inner ring 1 and the inner wall of the outer ring 2 one by one. The rollers 3 are correspondingly arranged with the shifting frames of the retainer 4 one by one, the axial direction of the rollers 3 is parallel to the axial direction of the retainer 4 and is arranged in the shifting frames of the retainer 4, and the rollers 3 move along the circumferential direction in the corresponding shuttle-shaped space between the inner ring 1 and the outer ring 2 under the drive of the rotation of the retainer 4.
As shown in fig. 7, in the roller actuating assembly, the position of the roller 3 is at the left end of the shuttle-shaped space between the inner ring 1 and the outer ring 2, namely, the reverse operation locking end, when the outer ring 2 is relatively fixed and the inner ring 1 rotates clockwise, the roller 3 will move to the middle wider position under the action of friction force, and at this time, the inner ring 1 and the outer ring 2 can rotate freely relative to each other, namely, the inner ring 1 can rotate freely in the clockwise direction relative to the outer ring 2; when the outer ring 2 is relatively fixed and the inner ring 1 rotates anticlockwise, the roller 3 continues to move towards the left end of the shuttle-shaped space shown in the figure under the action of friction force, the roller 3 is wedged between the inner ring 1 and the outer ring 2 at the moment, the inner ring 1 and the outer ring 2 are locked, and the inner ring 1 cannot rotate anticlockwise relative to the outer ring 2 at the moment, so that the roller executing component is in a forward unidirectional overrunning state, namely the bidirectional controllable overrunning clutch is in a forward unidirectional overrunning mode.
As shown in fig. 8, in the roller actuating assembly, the position of the roller 3 is at the right end of the shuttle-shaped space between the inner ring 1 and the outer ring 2, namely, the forward operation locking end, when the outer ring 2 is relatively fixed and the inner ring 1 rotates counterclockwise, the roller 3 will move to the middle wider position under the action of friction force, and at this time, the inner ring 1 and the outer ring 2 can rotate freely relative to each other, namely, the inner ring 1 can rotate freely in the counterclockwise direction relative to the outer ring 2; when the outer ring 2 is relatively fixed and the inner ring 1 rotates clockwise, the roller 3 continues to move towards the right end of the shuttle-shaped space shown in the figure under the action of friction force, at the moment, the roller 3 is wedged between the inner ring 1 and the outer ring 2, the inner ring 1 and the outer ring 2 are locked, at the moment, the inner ring 1 cannot rotate clockwise relative to the outer ring 2, and therefore the roller executing assembly is in a reverse one-way overrunning state, namely the two-way controllable overrunning clutch is in a reverse one-way overrunning mode.
As shown in fig. 3, the strip-shaped groove plate 16 in the holder driving assembly is disposed on the outer edge of the end surface of the holder 4 in the roller executing assembly, and the length direction of the strip-shaped groove plate 16 is radially disposed along the end surface of the holder 4, in this embodiment 2, the strip-shaped groove plate 16 and the outer end surface of the holder 4 are of an integrated structure, so that under the driving of the push-pull electromagnet 15, the connecting rod 13 drives the pin 12 to move along the strip-shaped groove of the strip-shaped groove plate 16 and further drives the holder 4 to rotate along the axial direction, and the holder 4 rotates and further stirs the roller 3 to move along the circumferential direction in the corresponding shuttle-shaped space between the inner ring 1 and the outer.
The control assembly includes a controller (not shown). The control signal output end of the controller is connected with the control signal receiving end of the push-pull electromagnet 15, the push-pull electromagnet 15 controls the telescopic action of the push-pull rod at the output end of the push-pull electromagnet 15 through the controller, and further controls the relative motion between the roller 3 and the inner ring 1 and the outer ring 2 in the roller execution assembly, and after the roller 3 moves to a designated position, small current can be continuously introduced into the push-pull electromagnet 15 through the controller to eliminate gaps between transmission components, so that the roller 3 is reliably attached between the inner ring 1 and the outer ring 2 in the roller execution assembly.
The operation of the bidirectional controllable overrunning clutch comprises the following steps: a forward unidirectional override mode and a reverse unidirectional override mode:
the specific working process of the forward unidirectional overrunning mode is as follows:
as shown in fig. 4, in the bidirectional controllable overrunning clutch, when the push-pull electromagnet 15 is not powered on, under the action of a spring inside the push-pull electromagnet 15, the push-pull rod at the output end of the push-pull electromagnet 15 is in an initial state of being "contracted" inward along the axial direction, the pulling force of the push-pull rod of the push-pull electromagnet 15 is transmitted to the strip-shaped groove plate 16 sequentially through the rigid coupling 14, the connecting rod 13 and the pin 12, the strip-shaped groove plate 16 rotates counterclockwise along the axial direction of the cage 4 under the pulling force of the connecting rod 13 and the pin 12 (the observation direction at this time is the overlooking direction of fig. 4), the cage 4 rotates counterclockwise synchronously at a certain angle under the driving of the strip-shaped groove plate 16, the poking frame of the cage 4 drives the roller 3 to move counterclockwise along the circumferential direction to the reverse operation locking end of the shuttle-shaped space in the corresponding shuttle-shaped space between the inner ring, as shown in fig. 7, the roller 3 is shifted down by the shifting frame of the retainer 4 to move to the reverse operation locking end of the shuttle-shaped space, at this time, the outer ring 2 is fixed, under the wedging action of the balls 3, the inner ring 1 is locked relatively to the outer ring 2 along the counterclockwise direction, and the inner ring 1 freely rotates relatively to the outer ring 2 along the clockwise direction, so that the forward one-way overrunning mode is realized.
The specific working process of the reverse one-way overrunning mode is as follows:
as shown in fig. 4, in the bidirectional controllable overrunning clutch, after a controller receives a reverse unidirectional overrunning command sent by a vehicle TCU (automatic transmission control unit), the controller sends a control command to a push-pull electromagnet 15, and controls a push-pull rod at an output end of the push-pull electromagnet 15 to "extend" outward along an axial direction, a thrust of the push-pull rod of the push-pull electromagnet 15 is transmitted to a strip-shaped groove plate 16 sequentially through a rigid coupler 14, a connecting rod 13 and a pin 12, the strip-shaped groove plate 16 rotates clockwise along an axial direction of a cage 4 under a pulling force of the connecting rod 13 and the pin 12 (an observation direction at this time is a top view direction of fig. 4), the cage 4 synchronously rotates clockwise by a certain angle under the driving of the strip-shaped groove plate 16, a dial of the cage 4 drives a roller 3 to move clockwise along a circumferential direction to a forward operation locking end of a shuttle-shaped space in a corresponding shuttle-shaped space between an inner, when the push-pull rod of the push-pull electromagnet 15 extends to the longest length, as shown in fig. 8, the roller 3 is shifted down by the shifting frame of the retainer 4 to move to the forward operation locking end of the shuttle-shaped space, at this time, the outer ring 2 is fixed, under the wedging action of the balls 3, the inner ring 1 is locked relative to the outer ring 2 in the clockwise direction, and the inner ring 1 freely rotates relative to the outer ring 2 in the counterclockwise direction, so that the reverse one-way overrunning mode is realized.
Claims (5)
1. A two-way controllable overrunning clutch is characterized in that:
the device consists of a retainer driving component, a roller executing component and a control component;
the control tail end of the retainer driving assembly is coaxially and fixedly connected with a retainer (4) of the roller executing assembly;
the roller executing assembly consists of an inner ring (1), an outer ring (2), rollers (3) and a retainer (4), wherein the outer ring (2) is coaxially sleeved outside the inner ring (1), a plurality of shuttle-shaped spaces with narrow ends and wide middle are formed between the outer wall of the inner ring (1) and the inner wall of the outer ring (2), the retainer (4) is of a cylindrical frame structure, a plurality of poking frames are arranged on the circumferential direction of the retainer (4) and are perpendicular to the end face of the retainer, the retainer (4) is sleeved between the inner ring (1) and the outer ring (2), the poking frames of the retainer (4) correspond to shuttle-shaped spaces formed between the outer wall of the inner ring (1) and the inner wall of the outer ring (2) one by one, the rollers (3) are correspondingly arranged in the poking frames of the retainer (4), under the drive of the rotation of the retainer (4), the roller (3) moves along the circumferential direction in the corresponding shuttle-shaped space between the inner ring (1) and the outer ring (2);
the control assembly is in control connection with the retainer driving assembly to control the retainer driving assembly to drive the retainer (4) to rotate along the axial direction.
2. A bi-directionally controllable overrunning clutch as claimed in claim 1, wherein:
the retainer driving assembly consists of a driving motor (10), a worm and gear reduction box (9), a flexible coupling (7), a driving gear (6) and a driven gear (11);
an output shaft of the driving motor (10) is coaxially and fixedly connected with an input shaft of the worm and gear reduction box (9), an output shaft of the worm and gear reduction box (9) is coaxially connected with a gear shaft of the driving gear (6) through the flexible coupling (7), the worm and gear reduction box (9) is fixed on a shell of the gearbox, and the driving gear (6) is meshed with a driven gear (11) which is coaxially fixed on the end face of the retainer (4).
3. A bi-directionally controllable overrunning clutch as claimed in claim 2, wherein:
the control assembly consists of a controller, a shading disc (5) and an infrared correlation photoelectric sensor (8);
the control signal output end of the controller is connected with the control signal input end of the driving motor (10);
the infrared correlation photoelectric sensor (8) is arranged on the outer surface of the shell on one side of the output end of the worm gear reduction box (9), the shading disc (5) is coaxially arranged on the output shaft of the worm gear reduction box (9), the shading disc (5) and the infrared correlation photoelectric sensor (8) are installed in a matching way, when the shading disc (5) is driven by the output shaft of the worm gear reduction box (9) to rotate along the axial direction, the infrared correlation photoelectric sensor (8) is completely shaded by the shading disc (5) so as to prevent the infrared correlation photoelectric sensor (8) from receiving and transmitting infrared light signals, and in the process that the infrared correlation photoelectric sensor (8) moves out of the covering area of the shading disc (5) so as to recover the receiving and transmitting infrared light signals, the retainer (4) drives the roller (3) to drive to the other end of the shuttle-shaped space from one end of the corresponding shuttle-shaped space under the drive of the, the signal output end of the infrared correlation photoelectric sensor (8) is connected with the signal input end of the controller, and the rotation angle change condition of the output shaft of the worm gear reduction box (9) in the retainer driving assembly is identified by reading a detection signal sent by the infrared correlation photoelectric sensor (8).
4. A bi-directionally controllable overrunning clutch as claimed in claim 1, wherein:
the holder driving assembly consists of a push-pull electromagnet (15), a rigid coupling (14), a connecting rod (13), a pin (12) and a strip-shaped groove plate (16);
the push-pull rod of push-pull electro-magnet (15) output passes through the one end rigid connection of rigid coupling (14) and connecting rod (13), and push-pull electro-magnet (15) are fixed on the gearbox casing, and pin (12) fixed mounting is in the counter bore of connecting rod (13) other end, and bar frid (16) fixed mounting is followed last outside the terminal surface of holder (4), and the length direction of the bar groove of bar frid (16) radially sets up along holder (4) terminal surface, pin (12) and the bar groove accordant connection on the bar frid (16).
5. The bi-directionally controllable overrunning clutch of claim 4, wherein:
the control assembly comprises a controller, and a control signal output end of the controller is connected with a control signal receiving end of the push-pull electromagnet (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920553023.3U CN210034225U (en) | 2019-04-23 | 2019-04-23 | Bidirectional controllable overrunning clutch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920553023.3U CN210034225U (en) | 2019-04-23 | 2019-04-23 | Bidirectional controllable overrunning clutch |
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| CN210034225U true CN210034225U (en) | 2020-02-07 |
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| CN201920553023.3U Active CN210034225U (en) | 2019-04-23 | 2019-04-23 | Bidirectional controllable overrunning clutch |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882525A (en) * | 2019-04-23 | 2019-06-14 | 吉林博承传动系统科技有限公司 | A kind of two-way controllable overrunning clutch and its control method |
| CN112283264A (en) * | 2020-10-20 | 2021-01-29 | 深圳职业技术学院 | Bidirectional overrunning clutch |
| WO2022110859A1 (en) * | 2020-11-27 | 2022-06-02 | 江苏科技大学 | Tail fin type power generation device employing bidirectional rotation of flow induced vibration means to capture ocean current energy |
-
2019
- 2019-04-23 CN CN201920553023.3U patent/CN210034225U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882525A (en) * | 2019-04-23 | 2019-06-14 | 吉林博承传动系统科技有限公司 | A kind of two-way controllable overrunning clutch and its control method |
| CN109882525B (en) * | 2019-04-23 | 2024-06-18 | 吉林博承传动系统科技有限公司 | Bidirectional controllable overrunning clutch and control method thereof |
| CN112283264A (en) * | 2020-10-20 | 2021-01-29 | 深圳职业技术学院 | Bidirectional overrunning clutch |
| CN112283264B (en) * | 2020-10-20 | 2023-08-25 | 深圳职业技术学院 | Bidirectional overrunning clutch |
| WO2022110859A1 (en) * | 2020-11-27 | 2022-06-02 | 江苏科技大学 | Tail fin type power generation device employing bidirectional rotation of flow induced vibration means to capture ocean current energy |
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