CN102518718A - Automobile electromechanical brake - Google Patents
Automobile electromechanical brake Download PDFInfo
- Publication number
- CN102518718A CN102518718A CN2011104071303A CN201110407130A CN102518718A CN 102518718 A CN102518718 A CN 102518718A CN 2011104071303 A CN2011104071303 A CN 2011104071303A CN 201110407130 A CN201110407130 A CN 201110407130A CN 102518718 A CN102518718 A CN 102518718A
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- leading screw
- push rod
- motor
- linkage mechanism
- friction plate
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Abstract
The invention discloses an automobile electromechanical brake, which comprises a front floating caliper and a floating caliper block. The front floating caliper is connected with a front friction disc, the floating caliper block is connected with a back friction disc through a nut-piston, a brake disc is arranged between the front friction disc and the back friction disc, and the nut-piston is connected with a motor through a boosting linkage and is connected with a gap regulating mechanism. The motor pushes the back friction disc and the front friction disc to attach onto the brake disc by the boosting linkage, thereby realizing braking. The automobile electromechanical brake has a gap regulating function, and gaps among the brake disc and the friction discs can be regulated freely, so that constancy of the brake response speed of automobiles is guaranteed and braking performance is guaranteed further. The automobile electromechanical brake is fine in braking performance, simple in structure, convenient in installation, easy to maintain and low in energy consumption.
Description
Technical field
The present invention relates to a kind of brake system of car, be specifically related to a kind of vehicle electromechanical break.
Background technique
Automobile is as a kind of ground traffic tools, and going, turning to, stop is its three fundamental functions, and wherein parking function is to be accomplished by the braking system of automobile." safety, energy-saving and environmental protection " are three big themes of automobile future development, and braking system directly has influence on running safety as an important component part of automobile.Along with the development of modern science and technology, the Consumer improves the requirement of vehicle safety performance day by day simultaneously, and brake system of car is also constantly developed.Existing brake system of car all is based on traditional hydraulic braking sytem, and implantation ABS (anti-lock braking system), TCS (TCS), ESP (body electronics stable system) etc. realize.
But on the one hand, along with environmental deterioration, resource shortage, people pay close attention to and advocate " green energy resource " more, and traditional hydraulic system will progressively be replaced by renewable energy sources, therefore research and develop the electronic mechanical break to the very big meaning of preserving the ecological environment; On the other hand, existing braking system impels people to develop the brake system of car of a new generation, i.e. line control brake system because its oil hydraulic circuit be prone to be revealed, the braking corresponding speed is slow, pedal poor performance, assembling maintenance difficulty are big, be difficult for shortcomings such as module is integrated.
Summary of the invention
Technical problem to be solved by this invention provides a kind of vehicle electromechanical break, and it has running braking function, parking braking function and gap adjustment function concurrently.
For solving the problems of the technologies described above, the technical solution of vehicle electromechanical break of the present invention is:
Comprise front side floating clamp 1, unsteady caliper 7, front side floating clamp 1 connects front friction plate 23, and friction plates 22 after the caliper 7 that floats connects through nut piston 21 are provided with brake disc 2 between front friction plate 23 and the back friction plate 22; Nut piston 21 connects motor 15 through reinforcement linkage mechanism 8; Nut piston 21 joint gap controlling mechanisms 19; Motor 15 promotes back friction plate 22 through reinforcement linkage mechanism 8 and presses close to brake disc 2 with front friction plate 23, realizes braking.
Said nut piston 21 connects an end of second leading screw 3 through a plurality of nuts, and the other end of second leading screw 3 flexibly connects screw mandrel cover 5; Be arranged with adjusting element 4 on second leading screw 3; Said gap adjusting mechanism 19 is arranged at the below of adjusting element 4; Screw mandrel cover 5 flexibly connects through left connection hinge 26 one of them fork with reinforcement linkage mechanism 8, and another fork of reinforcement linkage mechanism 8 flexibly connects through the rear end of right connection hinge 11 with unsteady caliper 7; Two connecting rods of reinforcement linkage mechanism 8 are connected with leading screw push rod 9 through hinge; Leading screw push rod 9 connects first leading screw, 12, the first leading screws 12 to be realized being threaded with the output shaft of motor 15 through a plurality of nuts; The rotation of motor 15 output shafts drives the nut rotation, drives first leading screw 12 and moves axially, and realizes rotatablely moving of motor 15 is converted into straight line motion.
Said gap adjusting mechanism 19 comprises cone push rod 192, fixed cover 191, and cone push rod 192 is arranged at the below of said adjusting element 4, and the shaft of cone push rod 192 is arranged in the fixed cover 191, and the shaft of cone push rod 192 is arranged with pressure spring 194; The bottom of cone push rod 192 is provided with electromagnet 193.Said electromagnet 193 is electrically connected electronic control unit 0 through pilot 195; Said motor 15 is by electronic control unit 0 control.
Relation satisfies between the input power F of said reinforcement linkage mechanism 8 and the ouput force Fo:
Wherein: F is the axial force of leading screw push rod 9,
Fo is the axial force of nut piston 21,
N is into the thrust of two connecting rods of the reinforcement linkage mechanism 8 of V-type,
θ is connecting rod and horizontal angle,
L is the fork length overall of reinforcement linkage mechanism 8,
L is the distance between left connection hinge 26 and the fixed hinge 13.
Said motor 15 is arranged on the motor base 16; Motor base 16 flexibly connects through the rear end of sliding bar 14,17 and unsteady caliper 7, and motor base 16 can be moved with respect to unsteady caliper 7.
The other end of said second leading screw 3 flexibly connects screw mandrel cover 5 through thrust ball bearing 6.
Be provided with seal ring 20 between said nut piston 21 and the unsteady caliper 7; Perhaps the piston cylinder of nut piston 21 is the square-section; Perhaps nut piston 21 is provided with the sliding bar of guiding usefulness.
Said adjusting element 4 is a cylindrical gears.
The technique effect that the present invention can reach is:
The present invention can solve the problem of not good, the no gap of the reinforcement effect regulatory function of brake with gap between existing electronics.
The present invention adopts the reinforcement linkage mechanism, and input power has good reinforcement effect through twice amplification, can reduce required intake; The present invention has service brake, the gap function from main regulation, parking braking simultaneously.
The present invention has good gap adjustment function, can carry out free adjustment to the gap between brake disc and the friction plate, to guarantee the constancy of car brakeing speed of response, further ensures braking ability.
Braking ability of the present invention is good, simple in structure, easy for installation, be easy to safeguard, consuming little energy.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation:
Fig. 1 is the structural representation of vehicle electromechanical break of the present invention;
Fig. 2 is the structural representation of gap adjusting mechanism of the present invention;
Fig. 3 is the stressed schematic representation that concerns of reinforcement linkage mechanism of the present invention.
Description of reference numerals among the figure:
1 is the front side floating clamp; 2 is brake disc;
3 is second leading screw; 4 is cylindrical gears;
5 is the screw mandrel cover; 6 is thrust ball bearing;
7 are the caliper that floats; 8 is the reinforcement linkage mechanism;
9 is the leading screw push rod; 10 is the hinge support plate;
11 is right connection hinge; 12 is first leading screw;
13 is fixed hinge; 14 is first sliding bar;
15 is motor; 16 is motor base;
17 is second sliding bar; 18 are the control dunnage;
19 is gap adjusting mechanism; 20 is seal ring;
21 is nut piston; 22 is the back friction plate;
23 is front friction plate; 24 is the friction plate supporting frame;
25 is bolt; 26 is left connection hinge;
191 is fixed cover; 192 is cone push rod;
193 is electromagnet; 194 is pressure spring;
195 is pilot; 0 is electronic control unit (ECU).
Embodiment
As shown in Figure 1; Vehicle electromechanical break of the present invention; Comprise front side floating clamp 1, unsteady caliper 7; Front side floating clamp 1 connects front friction plate 23 through friction plate supporting frame 24, and the front end of the caliper 7 that floats connects back friction plate 22 through nut piston 21, is provided with brake disc 2 between front friction plate 23 and the back friction plate 22;
For being fixedly connected, nut piston 21 can't be realized rotation with respect to unsteady caliper 7, can only move axially with unsteady caliper 7 between nut piston 21 and the unsteady caliper 7;
Can be provided with seal ring 20 between nut piston 21 and the unsteady caliper 7; Perhaps the piston cylinder of nut piston 21 is the square-section; Perhaps nut piston 21 is provided with the sliding bar of guiding usefulness;
Another fork of reinforcement linkage mechanism 8 is connected with the rear end of unsteady caliper 7 through right connection hinge 11 and hinge support plate 10; Two connecting rods of reinforcement linkage mechanism 8 are connected with leading screw push rod 9 through hinge; Reinforcement linkage mechanism 8 utilizes the reinforcement effect at dead point, when the angle between two connecting rods of reinforcement linkage mechanism 8 is spent near 180, can reach very big reinforcement effect; Reinforcement linkage mechanism 8 adopts the secondary boosting mechanism, can the axial force that come from leading screw push rod 9 be amplified, thereby play the effect of amplifying ouput force;
Leading screw push rod 9 connects first leading screw, 12, the first leading screws 12 to be realized being threaded with the output shaft of motor 15 through a plurality of nuts; The rotation of motor 15 output shafts drives the nut rotation, drives first leading screw 12 and moves axially, and realizes rotatablely moving of motor 15 is converted into straight line motion; Motor 15 is by electronic control unit 0 control;
Motor 15 is installed on the motor base 16; The both sides of motor base 16 flexibly connect with the rear end of unsteady caliper 7 through first sliding bar 14, second sliding bar 17 respectively, and motor base 16 can be moved with respect to unsteady caliper 7;
Two forks of reinforcement linkage mechanism 8 are fixedly supported on the motor base 16 through fixed hinge 13;
As shown in Figure 2, be fixedly connected through bolt 25 between controlling dunnage 18 and screw mandrel overlapping 5;
Working principle of the present invention is:
When break is braked (rise), need make nut piston 21 be moved to the left until, make electromagnet 193 unclamp cone push rod 192 by electronic control unit 0 control; Cone push rod 192 moves upward under the effect of pressure spring 194, and cone push rod 192 is withstood cylindrical gears 4, and second leading screw 3 that is connected with cylindrical gears 4 can't be rotated, and nut piston 21 is owing to the rubbing action of seal ring 20 can not rotate yet simultaneously; Just can promote reinforcement linkage mechanisms 8 through motor 15 this moment, makes the fork of reinforcement linkage mechanism 8 promote screw mandrel cover 5, second leading screw 3, nut piston 21, and friction plate 22 is pressed close to brake disc 2 after final the promotion; Meanwhile; Another fork of reinforcement linkage mechanism 8 promotes unsteady caliper 7 through right connection hinge 11 and moves in the opposite direction; Drive front side floating clamp 1 and promote fixed front friction plate 23 on it and also press close to brake disc 2, so just produced braking moment, realize braking wheel;
During backhaul, disable motor 15 makes the fork return of reinforcement linkage mechanism 8, and fork drives second leading screw 3 and moves right together with nut piston 21, discharges braking; Make electromagnet 193 hold cone push rod 192, cone push rod 192 is separated with cylindrical gears 4, this moment, second leading screw 3 can freely rotate;
Because this break is a disc brake with floating caliper, if back friction plate 22 does not does not wear and tear, then the axial return amount of nut piston 21, second leading screw 3 and screw set 5 is the setting gap L, sets gap L and is the gap between back friction plate 22 and the brake disc 2;
If back friction plate 22 weares and teares, the axial return amount of screw set 5 should be setting gap L+△, and △ is the wear extent of back friction plate 22, and L is the gap sum of two unsteady pincers and brake disc 2 here; And nut piston 21 moves L under the effect of seal ring 20; At this moment needing the nut piston 21 and second leading screw 3 to produce the gap compensation of △ could friction compensation sheet 22,23 and the wearing clearance △ of 2 of brake discs; Therefore the relation between the axial force F 2 of the frictional force F1 of needs assurance seal ring 20 and nut piston 21 and second leading screw 3 and nut piston 21 is: F1>F2; Could in compensation process, guarantee; Thereby second leading screw 3 rotates with nut piston 21 and produces nose balance amount △, and nut piston 21 does not relatively rotate with unsteady caliper 7.
The present invention is provided with gap adjusting mechanism 19, utilizes cooperating between cylindrical gears 4 and the automatically controlled cone push rod 192, realizes the unidirectional control to second leading screw 3.During rise, electromagnet 193 unclamps cone push rod 192, and cone push rod 192 is withstood cylindrical gears 4, the second leading screws 3 and can't be rotated, thereby guarantees axial being rigidly connected; During backhaul, electromagnet 193 holds cone push rod 192, the second leading screws 3 can axial rotation, thereby the wear extent of compensation back friction plate 22 realizes the gap compensation.
The reinforcement effect of reinforcement linkage mechanism 8 of the present invention is fairly obvious, and is as shown in Figure 3,
The input power F of reinforcement linkage mechanism 8 is the axial force of leading screw push rod 9; Ouput force Fo is the axial force of nut piston 21, and the thrust of two connecting rods of the reinforcement linkage mechanism 8 of one-tenth V-type is N, and connecting rod and horizontal angle are θ; The fork length overall of reinforcement linkage mechanism 8 is L; Distance between left side connection hinge 26 and the fixed hinge 13 is l, and the stressed relation according in above-mentioned geometrical relationship and the linkage mechanism can get:
If get L/l=3, θ=5 °, then Fo=17.15F.Can find out to have into the relation of multiple between Fo and the F.
The above is merely preferred embodiment of the present invention, and not in order to restriction the present invention, common variation that those skilled in the art carries out in technological scheme scope of the present invention and replacement all should be included in protection scope of the present invention.
Claims (9)
1. vehicle electromechanical break; It is characterized in that: comprise front side floating clamp (1), unsteady caliper (7); Front side floating clamp (1) connects front friction plate (23); The caliper (7) that floats connects back friction plate (22) through nut piston (21), is provided with brake disc (2) between front friction plate (23) and the back friction plate (22); Nut piston (21) connects motor (15) through reinforcement linkage mechanism (8); Nut piston (21) joint gap controlling mechanism (19); Motor (15) promotes back friction plate (22) through reinforcement linkage mechanism (8) and front friction plate (23) is pressed close to brake disc (2), realizes braking.
2. vehicle electromechanical break according to claim 1 is characterized in that: said nut piston (21) connects an end of second leading screw (3) through a plurality of nuts, and the other end of second leading screw (3) flexibly connects screw mandrel cover (5); Be arranged with adjusting element (4) on second leading screw (3); Said gap adjusting mechanism (19) is arranged at the below of adjusting element (4);
Screw mandrel cover (5) flexibly connects through left connection hinge (26) one of them fork with reinforcement linkage mechanism (8), and another fork of reinforcement linkage mechanism (8) flexibly connects through the rear end of right connection hinge (11) with unsteady caliper (7); Two connecting rods of reinforcement linkage mechanism (8) are connected with leading screw push rod (9) through hinge;
Leading screw push rod (9) connects first leading screw (12), and first leading screw (12) is realized being threaded with the output shaft of motor (15) through a plurality of nuts; The rotation of motor (15) output shaft drives the nut rotation, drives first leading screw (12) and moves axially, and realizes rotatablely moving of motor (15) is converted into straight line motion.
3. vehicle electromechanical break according to claim 2; It is characterized in that: said gap adjusting mechanism (19) comprises cone push rod (192), fixed cover (191); Cone push rod (192) is arranged at the below of said adjusting element (4); The shaft of cone push rod (192) is arranged in the fixed cover (191), and the shaft of cone push rod (192) is arranged with pressure spring (194); The bottom of cone push rod (192) is provided with electromagnet (193).
4. vehicle electromechanical break according to claim 3 is characterized in that: said electromagnet (193) is electrically connected electronic control unit (0) through pilot (195); Said motor (15) is controlled by electronic control unit (0).
5. according to claim 1 or 2 or 3 each described vehicle electromechanical breaks, it is characterized in that: relation satisfies between the input power F of said reinforcement linkage mechanism (8) and the ouput force Fo:
Wherein: F is the axial force of leading screw push rod (9),
Fo is the axial force of nut piston (21),
N is into the thrust of two connecting rods of the reinforcement linkage mechanism (8) of V-type,
θ is connecting rod and horizontal angle,
L is the fork length overall of reinforcement linkage mechanism (8),
L is the distance between left connection hinge (26) and the fixed hinge (13).
6. vehicle electromechanical break according to claim 1 is characterized in that: said motor (15) is arranged on the motor base (16); Motor base (16) flexibly connects through the rear end of sliding bar (14,17) with unsteady caliper (7), and motor base (16) can be moved with respect to unsteady caliper (7).
7. vehicle electromechanical break according to claim 1 is characterized in that: the other end of said second leading screw (3) flexibly connects screw mandrel cover (5) through thrust ball bearing (6).
8. vehicle electromechanical break according to claim 1 is characterized in that: be provided with seal ring (20) between said nut piston (21) and the unsteady caliper (7); Perhaps the piston cylinder of nut piston (21) is the square-section; Perhaps nut piston (21) is provided with the sliding bar of guiding usefulness.
9. vehicle electromechanical break according to claim 1 is characterized in that: said adjusting element (4) is a cylindrical gears.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104071303A CN102518718B (en) | 2011-12-09 | 2011-12-09 | Automobile electromechanical brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104071303A CN102518718B (en) | 2011-12-09 | 2011-12-09 | Automobile electromechanical brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102518718A true CN102518718A (en) | 2012-06-27 |
| CN102518718B CN102518718B (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104071303A Active CN102518718B (en) | 2011-12-09 | 2011-12-09 | Automobile electromechanical brake |
Country Status (1)
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671635A (en) * | 2013-12-10 | 2014-03-26 | 山东交通学院 | Reinforcement type electromagnetic mechanical brake |
| CN104895961A (en) * | 2015-06-05 | 2015-09-09 | 魏伯卿 | Anti-locking mechanical brake |
| CN105889374A (en) * | 2016-02-22 | 2016-08-24 | 浙江大学台州研究院 | Method for controlling gap adjustment of electronic mechanical brake |
| CN104565143B (en) * | 2015-01-12 | 2016-12-28 | 安徽嘉瑞达汽车部件制造有限公司 | One is automatically adjusted caliper |
| CN108068786A (en) * | 2017-12-20 | 2018-05-25 | 合肥工业大学 | A kind of electro-mechanical brake apparatus |
| CN108223624A (en) * | 2016-12-22 | 2018-06-29 | 比亚迪股份有限公司 | Electrodynamic type brake and with its vehicle |
| CN109424668A (en) * | 2017-08-29 | 2019-03-05 | 比亚迪股份有限公司 | Disk brake and vehicle |
| CN109424670A (en) * | 2017-08-29 | 2019-03-05 | 比亚迪股份有限公司 | Disk brake and vehicle |
| CN109424667A (en) * | 2017-08-29 | 2019-03-05 | 比亚迪股份有限公司 | Disk brake and vehicle |
| CN109424665A (en) * | 2017-08-29 | 2019-03-05 | 比亚迪股份有限公司 | Disk brake and vehicle |
| CN109552280A (en) * | 2017-09-26 | 2019-04-02 | 比亚迪股份有限公司 | Line control brake system and vehicle |
| CN110454523A (en) * | 2019-09-03 | 2019-11-15 | 重庆中车四方所智能装备技术有限公司 | A kind of rocker-arm wind-powered electricity generation motor mechanical brake |
| CN110469602A (en) * | 2019-07-27 | 2019-11-19 | 浙江师范大学 | A kind of self energizing effort brake-by-wire device |
| CN110486392A (en) * | 2019-07-27 | 2019-11-22 | 浙江师范大学 | A kind of self energizing effort brake-by-wire device |
| CN110701221A (en) * | 2019-10-19 | 2020-01-17 | 山东理工大学 | Two-way synchronous reinforcement type electromechanical brake actuator based on linear motor |
| CN112025836A (en) * | 2020-08-18 | 2020-12-04 | 河南经贸职业学院 | Special table of multi-functional accounting |
| CN112594302A (en) * | 2021-01-18 | 2021-04-02 | 上海麦斌汽车用品有限公司 | Brake auxiliary device capable of always keeping maximum brake effect |
| CN115257675A (en) * | 2022-07-15 | 2022-11-01 | 重庆长安汽车股份有限公司 | Electromechanical braking structure, braking system, automobile and design method |
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| CN109611474B (en) * | 2019-01-02 | 2020-04-21 | 安徽理工大学 | Electromechanical braking method based on disc spring parking |
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| CN103671635B (en) * | 2013-12-10 | 2015-11-11 | 山东交通学院 | A kind of reinforcement type electromagnetic mechanical brake |
| CN103671635A (en) * | 2013-12-10 | 2014-03-26 | 山东交通学院 | Reinforcement type electromagnetic mechanical brake |
| CN104565143B (en) * | 2015-01-12 | 2016-12-28 | 安徽嘉瑞达汽车部件制造有限公司 | One is automatically adjusted caliper |
| CN104895961A (en) * | 2015-06-05 | 2015-09-09 | 魏伯卿 | Anti-locking mechanical brake |
| CN105889374A (en) * | 2016-02-22 | 2016-08-24 | 浙江大学台州研究院 | Method for controlling gap adjustment of electronic mechanical brake |
| CN105889374B (en) * | 2016-02-22 | 2018-05-04 | 浙江大学台州研究院 | A kind of control method of electromechanical brake gap adjustment |
| CN108223624A (en) * | 2016-12-22 | 2018-06-29 | 比亚迪股份有限公司 | Electrodynamic type brake and with its vehicle |
| CN109424665B (en) * | 2017-08-29 | 2020-10-20 | 比亚迪股份有限公司 | Disc brake and vehicle |
| CN109424668A (en) * | 2017-08-29 | 2019-03-05 | 比亚迪股份有限公司 | Disk brake and vehicle |
| CN109424670A (en) * | 2017-08-29 | 2019-03-05 | 比亚迪股份有限公司 | Disk brake and vehicle |
| CN109424667A (en) * | 2017-08-29 | 2019-03-05 | 比亚迪股份有限公司 | Disk brake and vehicle |
| CN109424665A (en) * | 2017-08-29 | 2019-03-05 | 比亚迪股份有限公司 | Disk brake and vehicle |
| WO2019042316A1 (en) * | 2017-08-29 | 2019-03-07 | 比亚迪股份有限公司 | Disc brake and vehicle |
| WO2019042319A1 (en) * | 2017-08-29 | 2019-03-07 | 比亚迪股份有限公司 | Disc brake and vehicle |
| CN109424667B (en) * | 2017-08-29 | 2020-11-06 | 比亚迪股份有限公司 | Disc brake and vehicle |
| CN109552280A (en) * | 2017-09-26 | 2019-04-02 | 比亚迪股份有限公司 | Line control brake system and vehicle |
| CN108068786A (en) * | 2017-12-20 | 2018-05-25 | 合肥工业大学 | A kind of electro-mechanical brake apparatus |
| CN110469602A (en) * | 2019-07-27 | 2019-11-19 | 浙江师范大学 | A kind of self energizing effort brake-by-wire device |
| CN110486392A (en) * | 2019-07-27 | 2019-11-22 | 浙江师范大学 | A kind of self energizing effort brake-by-wire device |
| CN110486392B (en) * | 2019-07-27 | 2021-02-02 | 浙江师范大学 | Self-energizing wire control actuator |
| CN110469602B (en) * | 2019-07-27 | 2021-02-02 | 浙江师范大学 | Self-energizing wire control actuator |
| CN110454523A (en) * | 2019-09-03 | 2019-11-15 | 重庆中车四方所智能装备技术有限公司 | A kind of rocker-arm wind-powered electricity generation motor mechanical brake |
| CN110454523B (en) * | 2019-09-03 | 2020-07-03 | 重庆中车四方所智能装备技术有限公司 | Rocker arm type mechanical brake of motor for wind power |
| CN110701221A (en) * | 2019-10-19 | 2020-01-17 | 山东理工大学 | Two-way synchronous reinforcement type electromechanical brake actuator based on linear motor |
| CN110701221B (en) * | 2019-10-19 | 2020-09-22 | 山东理工大学 | Two-way synchronous reinforcement type electromechanical brake actuator based on linear motor |
| CN112025836A (en) * | 2020-08-18 | 2020-12-04 | 河南经贸职业学院 | Special table of multi-functional accounting |
| CN112594302A (en) * | 2021-01-18 | 2021-04-02 | 上海麦斌汽车用品有限公司 | Brake auxiliary device capable of always keeping maximum brake effect |
| CN115257675A (en) * | 2022-07-15 | 2022-11-01 | 重庆长安汽车股份有限公司 | Electromechanical braking structure, braking system, automobile and design method |
| CN115257675B (en) * | 2022-07-15 | 2024-04-12 | 重庆长安汽车股份有限公司 | Electromechanical braking structure, braking system, automobile and design method |
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