CN202646483U - Stepless speed change electronic parking executing mechanism - Google Patents
Stepless speed change electronic parking executing mechanism Download PDFInfo
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- CN202646483U CN202646483U CN 201220272939 CN201220272939U CN202646483U CN 202646483 U CN202646483 U CN 202646483U CN 201220272939 CN201220272939 CN 201220272939 CN 201220272939 U CN201220272939 U CN 201220272939U CN 202646483 U CN202646483 U CN 202646483U
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Abstract
The utility model discloses a stepless speed change electronic parking executing mechanism, which comprises a motor, an input stage planetary gear mechanism, an output stage planetary gear mechanism and a gear and rack mechanism, wherein the motor provides the torque motive power, the input stage planetary gear mechanism is connected with the motor, the output stage planetary gear mechanism is connected with the input stage planetary gear mechanism, the gear and rack mechanism is connected with the output stage planetary gear mechanism, the input stage planetary gear mechanism comprises an input stage planetary frame, an input stage planetary gear, an input stage gear ring and an input stage sun wheel, the output stage planetary gear mechanism comprises an output stage planetary frame, an output stage planetary gear, an output stage gear ring and an output stage sun wheel, the input stage sun wheel is connected with the output stage gear ring through an oil pipe, so two symmetrical speed acceleration and toque reduction loops are formed, and the input stage gear ring and the output stage sun wheel are connected through an oil pipe, so two symmetrical speed deceleration and torque increase loops are formed. The continuous variable transmission ratio is realized, meanwhile, the motive power transmission stability is ensured, the transmission moment is great, in addition, a brake system is irrelevant to the vehicle type, the applicability is good, and the stepless speed change electronic parking executing mechanism can be used for vehicle types of various kinds.
Description
Technical field
The utility model belongs to the electric parking brake field, particularly a kind of can be with the straight reciprocating motion that changes into of the rotating braking torque continuous variable of motor, thereby drive the stepless change electronic parking actuator of vehicle parking device.
Background technique
The driving actuator of electric parking brake is that the moment that will be transmitted by motor passes to the Parking Brake of vehicle by gear transmission, thereby reaches the destination device of parking braking, and it is comprised of the gear of several fixedly numbers of teeth usually.Because the number of teeth of each gear is fixed, thus stable velocity ratio can be provided, but also fix just because of the number of teeth, the velocity ratio that provides is also fixed, and can not satisfy diverse parking braking requirement.And the transmission of power situation such as be interrupted, be short of power also can appear when carrying out transmission of power, this all can affect the effect of parking braking.Simultaneously, this Parking actuator is subjected to the fixing restriction of velocity ratio, can only be adapted to certain specific vehicle, in case change trains, this device also can lose effectiveness, so its adaptation between different automobile types is very poor.
In order to address the above problem, Chinese invention patent notice of authorization specification (notification number CN101144514B, day for announcing 2010.06.02) a kind of electronic brake system actuator is disclosed, it comprises transmitting set and brake caliper assembly, the output of the direct current generator in the transmitting set through synchronous belt drive mechanism and Involute planetary gear drive with small teeth difference mechanism slow down increase turn round after, transfer straight line motion by the slip screw driving mechanism to rotatablely moving, transfer straight line motion by the slip screw driving mechanism to rotatablely moving, adopt the form of swivel nut pushing piston and brake pad assembly that brake disc is braked.There are the following problems in this actuator: 1, skidding can appear in toothed belt transmission, and wearing and tearing are large, and the power of output is limited, be unfavorable for timely Parking, and manufacturing expense is high; 2, adopt simultaneously the slip screw driving mechanism, if work long hours, parts depreciation is serious, has reduced the efficient of drive system.
Summary of the invention
The purpose of this utility model is to provide a kind of stepless change electronic parking actuator, when realizing the velocity ratio continuous variable, guarantees that transmission of power is stable, and driving torque is large, and is applicable to various.
The technical solution that realizes the utility model purpose is: a kind of stepless change electronic parking actuator, comprise a motor that torque power is provided, the input stage planetary gears that links to each other with motor, the output stage planetary gears that links to each other with the input stage planetary gears and the pinion and rack that links to each other with the output stage planetary gears, described input stage planetary gears comprises the input stage planet carrier, the input stage planetary pinion, the input stage gear ring, the input stage sun gear, described input stage planet carrier is as the primary input gear, link to each other with the output of the motor that torque power is provided, the primary input gear is meshed with input stage gear ring and input stage sun gear respectively, and input stage gear ring and input stage sun gear are as the output gear of input stage; Described output stage planetary gears comprises output stage planet carrier, output stage planetary pinion, output stage gear ring, output stage sun gear, described output stage gear ring and output stage sun gear are as two input gears of output stage, be meshed with the output stage planet carrier respectively, the output stage planet carrier drives the pinion and rack of rear class as main output gear; Described input stage sun gear links to each other by oil pipe with described output stage gear ring, consists of two symmetrical speedups and subtracts the square loop, and described input stage gear ring links to each other by oil pipe with described output stage sun gear, consists of two symmetrical decelerations and increases the square loop.
Further, the input stage sun gear and the output stage gear ring among that subtract the square loop in two speedups of described symmetry are equipped with a clutch.The input stage gear ring and the output stage sun gear among that increase the square loop in two decelerations of described symmetry are equipped with a clutch.The symmetry axis of input stage planetary gears and output stage planetary gears and pinion and rack is all on same axis.
The utility model compared with prior art, its remarkable advantage:
1, braking moment continuous variable: the present invention adopts stepless speed changing mechanism and the pinion and rack of double planet wheel rows of mixing, when ground zero and low speed, although the moment of input is very little, but epicyclic train also can provide suitable power to guarantee that starting is smooth-going, when the needs parking braking, it can provide a braking moment continuous variable and that power is enough, at this moment changes flywheel moment into straight-line driving force output by pinion and rack again.
2, driving torque is large: this mechanism not only transferring power is continuous, and transmission ratio-variable can satisfy diverse brake request, and driving torque is large, all can work having under load and the immunization with gD DNA vaccine.
3, braking system and type of vehicle are irrelevant, and adaptability is good.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model stepless change electronic parking actuator.
Among the figure, 1 is motor, 2 is input stage planet carrier (primary input gear), and 3 and 22 for speedup subtracts the square loop, and 4 is the input stage planetary gears, 5 and 20 is the input stage planetary pinion, 6 and 18 for deceleration increases the square loop, and 7 is first clutch, and 8 is second clutch, 9 and 14 is the output stage planetary pinion, 10 is the output stage planetary gears, and 11 is pinion and rack, and 12 is the output stage planet carrier, 13 is the output stage sun gear, 15 is the output stage gear ring, 16 three-clutch, and 17 is four clutches, 19 is the input stage gear ring, and 21 is the input stage sun gear.
Embodiment
As shown in drawings, the utility model stepless change electronic parking actuator comprises a motor 1, input stage planetary gears 4, it by input stage sun gear 21 and two input stage planetary pinions 5 and 20 and input stage gear ring 19 form, wherein, input stage sun gear 21 is enclosed within on the central shaft, and two planetary pinions are meshed on both sides up and down with sun gear respectively take central shaft as symmetry, and input stage gear ring 19 is enclosed within two planetary pinion outsides and its formation outer gearing; Output stage planetary gears 10, it by output stage sun gear 13 and two output stage planetary pinions 9 and 14 and output stage gear ring 15 form, wherein, output stage sun gear 13 is enclosed within on the central shaft, two planetary pinions are meshed on both sides up and down with sun gear respectively take central shaft as symmetry, and output stage gear ring 15 is enclosed within two planetary pinion outsides and its formation outer gearing; And wheel rackwork 11.Input stage planet carrier 2 links to each other with the motor 1 that torque power is provided as the primary input gear of input stage planetary gears, and the sun gear 21 of usefulness input stage planetary gears 4 and gear ring 19 are as two output gears of input stage; Output stage planet carrier 12 is as the main output gear of output stage planetary gears 10, drive the pinion and rack 11 of rear class, with output stage sun gear 13 and gear ring 15 two input gears as output stage, consisted of speedup with input stage sun gear 21 and output stage gear ring 15 and subtracted square loop 3, consisted of deceleration with input stage gear ring 19 and output stage sun gear 13 and increased square loop 6.Suppose that input torque counterclockwise rotates, slowing down increases square drive path 6 and speedup and subtracts square drive path 3 counterclockwise rotation trend is all arranged under input torque drives, and driver output level planet carrier (main output gear) 12 counterclockwise rotates.Such as the input torque opposite direction, then outbound course is opposite.
Because it is symmetrical and identical with 22 that speedup subtracts square loop 3, easy for composing a piece of writing, and only mentions that hereinafter speedup subtracts square loop 3, in like manner, because increasing square drive path 6, deceleration increases square loop 18 symmetries and identical with deceleration, and hereinafter only mentioning slows down increases square drive path 6.
The speed-change process of this gear is achieved in that
When vehicle start or low grade, motor 1 output torque is very little, the input stage planet carrier 2 of power through linking to each other with motor 1, pass to respectively sun gear 21 and the gear ring 19 of input stage, the formation speedup subtracts square loop 3 and deceleration increases square loop 6, the main output gear 12 of output stage planetary gears 10 is all passed in the torque that this two-way drive path is distributed input stage planetary gears 4, but deceleration this moment increases the torque of square drive path 6 transmissions subtracts 3 transmissions of square drive path greater than speedup torque, and the rear class transmission drag torque of main output gear 12 also subtracts the torque of square drive path 3 transmissions greater than speedup, speedup subtracts square drive path 3 and can not overcome to slow down and increase the driving of square drive path 6 and reverse, becoming clockwise direction by original rotating counterclockwise rotates, and deceleration is increased torque that square drive path 6 transmits and speedup subtract the poor of torque that square drive path 3 transmits, pass input stage planetary gears 4 back, unite the driving deceleration with the primary input gear 2 of input stage planetary gears and increase square drive path 6, its rotating speed and torque are increased simultaneously.Speedup subtracts square drive path 3 in counter-rotating (clockwise rotating) process, speedup subtracts the square kind of drive and becomes to slow down and increase the square kind of drive, the counter-rotating torque rotary speed is reduced, torque increases, with input stage planet carrier (primary input gear) 2 actings in conjunction, the torque that makes original deceleration increase square drive path 6 improves, and driving force strengthens, main output gear 12 torque that obtains of output stage planetary gears is increased, and rotating speed improves constantly.Along with the rotating speed of main output gear 4 improves constantly, its rear class transmission drag torque constantly reduces, and shares the drive task that increases square drive path 6 that slows down and also be on the increase, and the speed reversal that makes speedup subtract square drive path 3 constantly reduces, until stop counter-rotating.At this moment produce torque maximum, main output gear 12 can slowly run, and is applicable to the parking braking of vehicle.
After main output gear 4 rotating speeds are brought up to certain speed, speedup subtracts the torque of square drive path 3 transmissions will be greater than the drag torque of main output gear 12, speedup subtracts square drive path 3 will be automatically converted to counterclockwise rotation, the rotating speed that increases square drive path 6 that slows down descends in proportion, speedup subtracts square drive path 3 beginning and deceleration and increases square drive path 6 and unite and drive main output gear 12, and the rotating speed of main output gear 2 is further improved.At this moment be applicable to the requirement of the release parking braking of the large rotating speed of needs.
Subtract the Double-directional rotary process of square drive path 3 by rotational velocity and continuous two the torque drive path, particularly speedup that change of rotating manner, finish the electrodeless variable-speed task of torque transmission.At last, the rotational torque after increasing is converted to the movement output of linear reciprocation through pinion and rack 11, drives Parking Brake, the parking braking requirement when reaching for the various load of vehicle.
Wherein, subtract in square loop 3 and the deceleration increment loop 6 in speedup, each has filled two clutches, be used for the variation of control rotating speed and torque, make it to offer as requested suitable rotating speed and torque, for example, if when needing large torque, the two-way clutch all can be closed, make speedup subtract 3 counter-rotatings of square loop, and deceleration increment loop 6 increase square together, very large torque can be provided, at this moment the large torque that produces, parking braking when after conversion, being used for load, effect is remarkable.The clutch 8,17 that speedup can be subtracted when treating its forward in the square loop 3 disconnects, and still can expire demand; If when needing large rotating speed, the clutch 8,17 that can speedup be subtracted in the square loop 3 first closes, the clutch 7,16 that increases in the square loop 6 that slows down disconnects, after rotating speed is brought up to a certain degree, make torque that speedup subtracts 3 transmissions of square drive path greater than the drag torque of main output gear 12, speedup subtracts always forward rotation of square drive path 3, the two-way clutch is closed together again, and very large rotating speed is provided.At this moment the high rotating speed that produces is applicable to the parking braking requirement when non-loaded.In a word, be various sensor feedback by control section on the car for example, the switching of computer solenoidoperated cluthes automatically and reasonably in order to can provide effective rotating speed and torque according to load request, is used for parking braking.
The symmetry axis of input stage planetary gears and output stage planetary gears and pinion and rack all on same axis, is stablized to guarantee transmission of power.
Claims (4)
1. stepless change electronic parking actuator, comprise a pinion and rack (11) that the motor (1) of torque power, the input stage planetary gears (4) that links to each other with motor, the output stage planetary gears (10) that links to each other with input stage planetary gears (4) is provided and links to each other with output stage planetary gears (10), it is characterized in that:
Described input stage planetary gears (4) comprises input stage planet carrier (2), input stage planetary pinion (5,20), input stage gear ring (19), input stage sun gear (21), described input stage planet carrier (2) is as the primary input gear, link to each other with the output of the motor that torque power is provided (1), primary input gear (2) is meshed with input stage gear ring (19) and input stage sun gear (21) respectively, and input stage gear ring (19) and input stage sun gear (21) are as the output gear of input stage;
Described output stage planetary gears (10) comprises output stage planet carrier (12), output stage planetary pinion (9,14), output stage gear ring (15), output stage sun gear (13), described output stage gear ring (15) and output stage sun gear (13) are as two input gears of output stage, be meshed with output stage planet carrier (12) respectively, output stage planet carrier (12) drives the pinion and rack (11) of rear class as main output gear;
Described input stage sun gear (21) links to each other by oil pipe with described output stage gear ring (15), consist of two symmetrical speedups and subtract square loop (3,22), described input stage gear ring (19) links to each other by oil pipe with described output stage sun gear (13), consist of two symmetrical decelerations and increase square loop (6,18).
2. stepless change electronic parking according to claim 1 actuator, it is characterized in that: two speedups in described symmetry subtract square loop (3,22) input stage sun gear (21) is equipped with a clutch (8,17) with output stage gear ring (15) among.
3. stepless change electronic parking according to claim 1 and 2 actuator, it is characterized in that: two decelerations in described symmetry increase square loop (6,18) input stage gear ring (19) and output stage sun gear (13) among are equipped with a clutch (7,16).
4. according to claim 1 to one of 3 described stepless change electronic parking actuators, it is characterized in that: the symmetry axis of input stage planetary gears and output stage planetary gears and pinion and rack is all on same axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220272939 CN202646483U (en) | 2012-06-11 | 2012-06-11 | Stepless speed change electronic parking executing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220272939 CN202646483U (en) | 2012-06-11 | 2012-06-11 | Stepless speed change electronic parking executing mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN202646483U true CN202646483U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220272939 Expired - Lifetime CN202646483U (en) | 2012-06-11 | 2012-06-11 | Stepless speed change electronic parking executing mechanism |
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| CN (1) | CN202646483U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734356A (en) * | 2012-06-11 | 2012-10-17 | 南京理工大学 | Stepless speed change electronic parking actuating mechanism |
-
2012
- 2012-06-11 CN CN 201220272939 patent/CN202646483U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734356A (en) * | 2012-06-11 | 2012-10-17 | 南京理工大学 | Stepless speed change electronic parking actuating mechanism |
| CN102734356B (en) * | 2012-06-11 | 2014-06-04 | 南京理工大学 | Stepless speed change electronic parking actuating mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130102 Effective date of abandoning: 20140604 |
|
| RGAV | Abandon patent right to avoid regrant |