CN101121400A - Parking braking system - Google Patents
Parking braking system Download PDFInfo
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- CN101121400A CN101121400A CNA2006100621089A CN200610062108A CN101121400A CN 101121400 A CN101121400 A CN 101121400A CN A2006100621089 A CNA2006100621089 A CN A2006100621089A CN 200610062108 A CN200610062108 A CN 200610062108A CN 101121400 A CN101121400 A CN 101121400A
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- parking
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Abstract
The invention provides a paring brake system, comprising a parking operating part in a cab and a parking arrester component joint directly with a power take-off shaft of a vehicle. The invention is characterized in that the parking arrester component contains a first unidirectional overrunning coupler and a second unidirectional overrunning coupler; thereof the two unidirectional overrunning couplers are respectively sleeved on and connected with the power take-off shaft via an inside race of the two unidirectional overrunning couplers and the direction of the unidirectional overrunning couplers is arranged inversely. The parking arrester component also contains a first friction arrester which has a friction joint with an external race of the first unidirectional overrunning coupler and a second friction arrester which has the friction joint with the external race of the second unidirectional overrunning coupler. The two friction arresters are connected respectively with the parking operating part via an inhaul cable. The invention can not only prevent the vehicle from sliding after the parking brake is relieved but also provide a safe and reliable performance for a hard braking.
Description
[technical field]
The present invention relates to a kind of emergency brake system of vehicle, relate in particular to a kind of overdrive clutch formula emergency brake system.
[background technology]
The braking during standstill of vehicle is the part of motor vehicle braking system, and the effect of emergency brake system comprises: 1) do not use when moving for vehicle is slipped; 2) sudden stop cooperates service braking system to use in driving.Present braking during standstill adopts conventional mechanical formula drg more, as plate disc brake and drum brake mechanism, these drgs act directly on transmission shaft or the wheel nave, and when removing braking during standstill fully and transmission shaft or wheel be separated from, if vehicle is positioned on the road surface with certain slope, then might be moving to the reversing sense slide of estimating travel direction after removing braking during standstill, make the driving safety of navigating mate have certain hidden danger.In addition, the situation for the sudden stop braking also requires the safety of brake system higher, to avoid the injury to personnel and vehicle.
Chinese patent CN1584357A discloses a kind of voussoir bidirectional overtaking disengaging type motor vehicle parking brake, the outer shroud of this bidirectional overtaking clutch brake is fixed on the case of transmission postbrachium, interior ring connects with the transmission main shaft spline mutually by castellated shaft, shift fork and two groups of voussoirs are housed between outer shroud and the interior ring, the low-angle of voussoir rotates the pulling force by spring, friction force and shift fork are controlled, by changing the active position of shift fork, can control wherein one group of voussoir only allows automobile to advance can not to retreat, another group then only allows back of automobile and can not advance, when shift fork was positioned at the position of not limiting two groups of wedge block movements, automobile promptly can not be advanced can not be retreated.
This Parking Brake obviously can make automobile not produce the slide car behind brake off, but because the braking of this kind Parking Brake is with the stuck realization of inner and outer ring of overriding clutch by voussoir, can cause Parking Brake moment locking like this, Parking Brake moment locking will causing drive wheel moment locking during emergency braking in driving, if drive wheel is a trailing wheel, serious whipping can appear in automobile, and this moment, automobile will be out of control; If drive wheel is a front-wheel, automobile can occur turning to out of control, so all can make vehicle be in breakneck state.In addition, the moment locking of Parking Brake causes very big infringement will for driving engine and whole drive system, if this moment, transmission shaft was twisted off, the braking potential of Parking Brake also will lose efficacy, and automobile will thoroughly be lost braking potential.
[summary of the invention]
The objective of the invention is in order to overcome above the deficiencies in the prior art part, a kind of slide car phenomenon can prevent that vehicle from producing starting after removing braking during standstill the time be provided, and when driving a vehicle emergency braking the safe and reliable emergency brake system of performance.
The present invention proposes a kind of emergency brake system for this reason, comprise the Parking operating parts that is positioned at operator's compartment, and with the parking brake assembly of the power take-off shaft direct connect of vehicle, it is characterized in that: described parking brake assembly comprises first mono-directional overrun clutch and second mono-directional overrun clutch, described two mono-directional overrun clutchs are socketed on the described power take-off shaft by its race, inner respectively, and the direction of its overdrive clutch is provided with on the contrary; Also comprise first friction brake with the outer race frictional engagement of first mono-directional overrun clutch, and with second friction brake of the outer race frictional engagement of second mono-directional overrun clutch, described two friction brakes also are connected with described Parking operating parts by drag-line respectively.
Owing to adopted above scheme, emergency brake system of the present invention is after the action of removing the Parking operating parts, by the overdrive clutch effect of two mono-directional overrun clutchs and the brake drag effect of two friction brakes, can limit the axial some directions of takeoff output of vehicle or the rotation of both direction, even vehicle is positioned on the road with certain slope, the slide car phenomenon in the time of also can after the Parking operating parts action of vehicle is removed, not producing starting; And, because the braking force of emergency brake system of the present invention comes from the rubbing effect of friction brake and overriding clutch outer race, power take-off shaft can stop operating under the effect of this braking force gradually, can not occur by the phenomenon of moment locking, thus the present invention be used in driving during emergency braking performance safe and reliable.
Further, emergency brake system of the present invention comprises also that position that the Parking Brake that is connected between described Parking operating parts and the parking brake assembly automatically terminates mechanism, induction Parking operating parts is moved and the transmission state sensor of the gear signal of the Parking operating parts position transduser that is converted to electric signal, induction speed variator and the car speed sensor of the speed signal of induction wheel is moved in this position; Described Parking operating parts position transduser, transmission state sensor and car speed sensor all are connected in described Parking Brake and automatically terminate mechanism.
Automatically terminate mechanism and various sensor by above-described Parking Brake is set, can make the releasing of Parking Brake realize automation, thereby realize the automation of vehicle performance, and satisfy the demand of different vehicle for the coupling facility.
[description of drawings]
Fig. 1 is the parking brake assembly front view of emergency brake system embodiment of the present invention.
Fig. 2 is the parking brake assembly left view of emergency brake system embodiment of the present invention.
Fig. 3 is the parking brake assembly right elevation of emergency brake system embodiment of the present invention.
Fig. 4 is an emergency brake system embodiment annexation scheme drawing of the present invention.
Fig. 5 is that emergency brake system of the present invention is from beginning braking during standstill to removing working process FB(flow block) of braking during standstill fully.
Fig. 6 one Figure 10 is the scheme drawing of emergency brake system embodiment drg of the present invention when automatically terminating mechanism and finishing different conditions the working process from the beginning braking during standstill to starting.
[specific embodiment]
Also in conjunction with the accompanying drawings the present invention is described in further detail below by the specific embodiment:
Referring to Fig. 4: shown in emergency brake system, comprise the Parking operating parts 1 that is positioned at operator's compartment, and with the parking brake assembly of power take-off shaft 2 direct connects of vehicle, described parking brake assembly comprises first mono-directional overrun clutch 3 and second mono-directional overrun clutch 4, two mono-directional overrun clutchs are socketed on the described power take-off shaft 2 by its race, inner respectively, and the direction of its overdrive clutch is provided with on the contrary; Also comprise first friction brake 5 and second friction brake, 6, two friction brakes respectively with the outer race frictional engagement of two mono-directional overrun clutchs, two friction brakes also are connected with described Parking operating parts 1 by drag-line respectively.
Referring to Fig. 1 to Fig. 3, the race, inner 32,42 of two mono-directional overrun clutchs is connected on the power take-off shaft 2 by spline housing, outer race 31,41 engages with first friction brake 5 and second friction brake 6, overriding clutch can be selected different forms such as Wedge-type or roller type for use, two overriding clutchs are arranged side by side, and the direction of its overdrive clutch is provided with on the contrary with respect to power take-off shaft 2.
Emergency brake system shown in Figure 4 also comprises: be connected that position that Parking Brake between described Parking operating parts 1 and the parking brake assembly automatically terminates mechanism 9, induction Parking operating parts 1 is moved and the transmission state sensor 12 of the gear signal of the Parking operating parts position transduser 10 that is converted to electric signal, induction speed variator 14 and the car speed sensor 11 of the speed signal of induction wheel 13 are moved in this position; These sensors all are connected in described Parking Brake and automatically terminate mechanism 9.
Referring to Fig. 4 and Fig. 6, Parking Brake cancel system 9 comprises electronic control unit 91, electromagnet 92 and mechanical actuating mechanism; Electronic control unit 91 receives the signal from Parking operating parts position transduser 10, transmission state sensor 11 and car speed sensor 12, and action command is passed to electromagnet 92.The first input drag-line, 71 ends that connect Parking operating parts 1 are provided with the first slide block 95a, the first output drag-line, 72 ends that connect first friction brake 5 are provided with the first sliding sleeve 97a, the first slide block 95a can be free to slide in the first sliding sleeve 97a but can not skid off the first sliding sleeve 97a, the first slide block 95a and Parking Brake automatically terminate between the fixed mounting of mechanism 9 and are connected with retracing spring 93a, be provided with sawtooth with the first dop 96a clamping in the first sliding sleeve 97a outside along the drag-line length direction, electromagnet 92 connects the first rocking arm 94a that can drive the first dop 96a and first sliding sleeve 97a engaging or separate by oscillating motion; The second input drag-line, 81 ends that connect Parking operating parts 1 are provided with the second slide block 95b, the second output drag-line, 82 ends that connect second drg 6 are provided with the second sliding sleeve 97b, second slide block 95 can be free to slide in the second sliding sleeve 97b but can not skid off the second sliding sleeve 97b, the second slide block 95b and Parking Brake automatically terminate and are connected with retracing spring 93b between the fixed mounting of mechanism 9 and are provided with sawtooth with the second dop 96b clamping in the second sliding sleeve 97b outside along the drag-line length direction, and electromagnet 92 connects the second rocking arm 94b that can drive the second dop 96b and first sliding sleeve 97b engaging or separate by oscillating motion.
The working process that emergency brake system of the present invention is removed from the braking during standstill to the braking during standstill fully is as follows:
With reference to emergency brake system of the present invention shown in Figure 5 from the beginning braking during standstill to removing working process FB(flow block) of braking during standstill fully, and the scheme drawing of Fig. 6 when finishing different conditions the working process from the beginning braking during standstill to starting to drg cancel system shown in Figure 10.
At first, suppose that the direction shown in the arrow among Fig. 2 is the rotation direction of automobile power take-off shaft 2 when advancing.At this moment, the direction that power take-off shaft 2 rotated when the direction of second mono-directional overrun clutch, 4 overdrive clutch was advanced with vehicle is identical, that is: when the transmission shaft direction of advancing to vehicle is rotated, the rotation of power take-off shaft 2 can not drive the rotation of the second mono-directional overrun clutch outer race 41, the counter-rotation that the braking meeting restricted power output shaft 2 of second friction brake 6 advances to vehicle; Same, the braking meeting restricted power output shaft 2 of first friction brake 5 rotates to the direction that vehicle advances.
When normal vehicle operation (as shown in Figure 6): at this moment, the slide block of two input drag-lines is positioned at the high order end of the sliding sleeve of two output drag-lines, and two retracing springs are not compressed, and two dops are clamped in the high order end of sawtooth on the two output drag-line slide blocks.
When the vehicle braking during standstill (as shown in Figure 7): at this moment, braking during standstill operating parts 1 is carried out the Parking action, drive two output drag-line motions by two input drag-lines respectively, first friction brake 5 and second friction brake 6 are held first mono-directional overrun clutch 3 and second mono-directional overrun clutch 4 respectively tightly, because the direction of two overriding clutch overdrive clutch is opposite, thereby causes power take-off shaft 2 all to be restricted and can't to rotate at two hand of rotation.This moment, vehicle was in docked state, the slide block of two input drag-lines still is positioned at the high order end of the sliding sleeve of two output drag-lines, two retracing springs are compressed, because two slide under the effect of slide block to left movement, make two dops motion and be clamped in the low order end of sawtooth on the two output drag-line slide blocks.
When automobile is prepared starting (as shown in Figure 8): at this moment, braking during standstill operating parts 1 is removed the Parking action, the slide block of two input drag-lines slides to the sliding sleeve right-hand member of two output drag-lines under the effect of retracing spring, owing to can't move under the effect that slides over the chucking head of two output drag-lines, thereby two output drag-line can't move, two friction brakes are still held two mono-directional overrun clutchs tightly, and power take-off shaft 2 can't move.This moment, electronic control unit 91 was removed by the incoming signal perception Parking action of Parking operating parts position transduser 10, and according to the state of the incoming signal perception gear of transmission state sensor 12, thereby remove actuating unit 9 controls two brakeages by Parking Brake:
If change speed gear box is in neutral, Parking Brake is removed actuating unit 9 and is not sent action command, and two drgs are still held two overriding clutchs tightly, and automobile still is in docked state.
If change speed gear box is in forward gear, electronic control unit 91 is issued electromagnet 92 and is carried out the instruction that first friction brake 5 is removed, with reference to figure 9 to Figure 10, the electromagnet 92 controls first rocking arm 94a drives the first dop 96a and moves downward, the first dop 96a is separated with sawtooth on the first sliding sleeve 97a, at this moment, the first output drag-line 72 drives the first slide block 97a and moves right under the rebound effect of tightening force, first drg 5 unclamps the braking to first overriding clutch 3, power take-off shaft 2 can rotate to the direction that vehicle advances, second drg 6 still plays brake action, but this moment, the rotation direction of power take-off shaft 2 was the direction of second overriding clutch, 4 overdrive clutch, the counter-rotation that second drg 6 can only restricted power output shaft 2 advances to vehicle, that is: vehicle can only advance and can not retreat at this moment, thereby has prevented that vehicle from producing the phenomenon of slide car after braking is removed.
If change speed gear box is in and reverses gear, electronic control unit 91 is issued electromagnet 92 and is carried out the instruction that second drg 6 is removed, and its principle and working process are identical when being in forward gear with change speed gear box, do not do tired stating at this.
Finish at vehicle start and to enter cruising after the stage, electronic control unit 91 can be removed another drg that still works according to the incoming signal of car speed sensor 11: when vehicle advances, the speed of a motor vehicle of starting stage is less than certain value, this moment, second drg was not still removed, enter cruising after the stage, the speed of a motor vehicle is greater than certain value, and second drg is carried out and removed action, and the vehicle power output shaft is removed braking during standstill at this moment fully; Equally, during vehicle rollback, the speed of a motor vehicle of starting stage is less than certain value, and this moment, first drg was not still removed, and entered cruising after the stage, and the speed of a motor vehicle is greater than certain value, and first drg is carried out and is removed action, and the vehicle power output shaft is removed braking during standstill at this moment fully.
Therefore, when vehicle start finishes, and enter cruising after the stage, two friction brakes all are disengaged, that is whole emergency brake system is not in running order.At this moment, if the emergency braking when needing to carry out driving only needs operation Parking operating parts 1 to make it carry out the Parking action, just can make two friction brakes carry out braking instruction simultaneously, power take-off shaft be subjected to two mono-directional overrun clutchs power effect and stop the rotation, finish the driving emergency braking.Because this braking derives from the friction brake force of two friction brakes, power take-off shaft can be by the moment locking, thereby has guaranteed the safety of emergency braking.
Claims (10)
1. emergency brake system, comprise the Parking operating parts (1) that is positioned at operator's compartment, and with the parking brake assembly of power take-off shaft (2) direct connect of vehicle, it is characterized in that: described parking brake assembly comprises first mono-directional overrun clutch (3) and second mono-directional overrun clutch (4), described two mono-directional overrun clutchs are socketed on the described power take-off shaft (2) by its race, inner respectively, and the direction of its overdrive clutch is provided with on the contrary; Also comprise first friction brake (5) with the outer race frictional engagement of first mono-directional overrun clutch, and with second friction brake (6) of the outer race frictional engagement of second mono-directional overrun clutch (4), described two friction brakes also are connected with described Parking operating parts (1) by drag-line respectively.
2. according to the described emergency brake system of claim 1, it is characterized in that: comprise also that position that the Parking Brake that is connected between described Parking operating parts (1) and the parking brake assembly automatically terminates mechanism (9), induction Parking operating parts (1) is moved and the transmission state sensor (11) of the gear signal of the Parking operating parts position transduser (10) that is converted to electric signal, induction speed variator (14) and the car speed sensor (12) of the speed signal of induction wheel (13) are moved in this position; Described Parking operating parts position transduser (10), transmission state sensor (11) and car speed sensor (12) all are connected in described Parking Brake and automatically terminate mechanism (9).
3. according to the described emergency brake system of claim 2, it is characterized in that: described Parking Brake automatically terminates mechanism (9) and comprises the electronic control unit (91) that receives described Parking operating parts position transduser (10), transmission state sensor (11) and car speed sensor (12) signal, receive the control command of electronic control unit (91) and produce the electromagnetic actuator (92) of action, described electromagnetic actuator (92) is carried out engaging or separating action between two friction brakes and its cooresponding mono-directional overrun clutch by mechanical actuating mechanism.
4. according to the described emergency brake system of claim 3, it is characterized in that: described mechanical actuating mechanism comprises carries out that first friction brake (5) engages with first mono-directional overrun clutch (3) or first mechanical actuating mechanism of separating action, and carries out that second friction brake (6) engages with second mono-directional overrun clutch (4) or second mechanical actuating mechanism of separating action; Described first mechanical actuating mechanism and second mechanical actuating mechanism are connected between Parking operating parts (1) and described two friction brakes by first drag-line and second drag-line respectively.
5. according to the described emergency brake system of claim 4, it is characterized in that: each drag-line in described first drag-line and second drag-line includes with Parking operating parts (1) bonded assembly input drag-line with the parking brake assembly bonded assembly and exports drag-line; Each mechanical actuating mechanism in described first mechanical actuating mechanism and second mechanical actuating mechanism includes the connecting device that its cooresponding input drag-line and output drag-line are flexibly connected, and the clamping apparatus that is connected in described electromagnetic actuator (92) and flexibly connects with described connecting device.
6. according to the described emergency brake system of claim 5, it is characterized in that: the sliding sleeve that the connecting device between described input drag-line and the cooresponding output drag-line is included in slide block that the input stay cable end is provided with respectively, is provided with at the output stay cable end, described slide block is nested in the described sliding sleeve, and described slide block and Parking Brake automatically terminate between the fixed mounting of mechanism (9) and also be connected with retracing spring; Described clamping apparatus is movably connected in the outside of sliding sleeve cooresponding with it.
7. according to the described emergency brake system of claim 6, it is characterized in that: the length direction of described sliding sleeve outside drag-line is provided with sawtooth, and described clamping apparatus is connected on the sawtooth of corresponding sliding sleeve.
8. according to the described emergency brake system of claim 7, it is characterized in that: described two clamping apparatus comprise respectively and electromagnetic actuator (92) bonded assembly rocking arm, and be connected in described rocking arm and with the dop of described sliding sleeve sawtooth clamping.
9. according to each described emergency brake system in the claim 3 to 7, it is characterized in that: described electromagnetic actuator (92) is an electromagnet.
10. according to the described emergency brake system of claim 1, it is characterized in that: described first mono-directional overrun clutch (3) and second mono-directional overrun clutch (4) are connected on the described power take-off shaft (2) by spline housing respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100621089A CN100556737C (en) | 2006-08-11 | 2006-08-11 | A kind of emergency brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100621089A CN100556737C (en) | 2006-08-11 | 2006-08-11 | A kind of emergency brake system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101121400A true CN101121400A (en) | 2008-02-13 |
| CN100556737C CN100556737C (en) | 2009-11-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100621089A Active CN100556737C (en) | 2006-08-11 | 2006-08-11 | A kind of emergency brake system |
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| CN (1) | CN100556737C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101939199A (en) * | 2008-02-19 | 2011-01-05 | 威伯科有限公司 | Parking brake for a vehicle and method for operating the parking brake |
| CN103182935A (en) * | 2013-03-12 | 2013-07-03 | 刘金鹏 | Control system and control method for electronic parking of automatic transmission automobile |
| CN106062438A (en) * | 2014-02-26 | 2016-10-26 | 奥迪股份公司 | Structure for securing diaphragm, diaphragm pump and valve device provided with said structure, and method for securing diaphragm |
| CN108578090A (en) * | 2018-03-13 | 2018-09-28 | 襄阳浩宇科技咨询有限公司 | A kind of intelligence push chair |
| CN112443594A (en) * | 2019-08-30 | 2021-03-05 | 比亚迪股份有限公司 | Brake-by-wire system and vehicle |
-
2006
- 2006-08-11 CN CNB2006100621089A patent/CN100556737C/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101939199A (en) * | 2008-02-19 | 2011-01-05 | 威伯科有限公司 | Parking brake for a vehicle and method for operating the parking brake |
| CN101939199B (en) * | 2008-02-19 | 2015-12-02 | 威伯科有限公司 | For the Parking Brake of automobile and the method for running Parking Brake |
| CN103182935A (en) * | 2013-03-12 | 2013-07-03 | 刘金鹏 | Control system and control method for electronic parking of automatic transmission automobile |
| CN106062438A (en) * | 2014-02-26 | 2016-10-26 | 奥迪股份公司 | Structure for securing diaphragm, diaphragm pump and valve device provided with said structure, and method for securing diaphragm |
| US9809205B2 (en) | 2014-02-26 | 2017-11-07 | Audi Ag | Method and control apparatus for actuating a braking device in the drive train of a vehicle with an automatic transmission |
| CN106062438B (en) * | 2014-02-26 | 2018-04-17 | 奥迪股份公司 | Method and control device for the brake apparatus for manipulating power train of the vehicle with automatic transmission |
| CN108578090A (en) * | 2018-03-13 | 2018-09-28 | 襄阳浩宇科技咨询有限公司 | A kind of intelligence push chair |
| CN108578090B (en) * | 2018-03-13 | 2023-12-15 | 安徽龙顺交通器材有限公司 | Intelligent push chair |
| CN112443594A (en) * | 2019-08-30 | 2021-03-05 | 比亚迪股份有限公司 | Brake-by-wire system and vehicle |
| CN112443594B (en) * | 2019-08-30 | 2022-03-18 | 比亚迪股份有限公司 | Brake-by-wire system and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100556737C (en) | 2009-11-04 |
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