CN209852288U - Direct drive-by-wire brake device for motor of miniature electric passenger vehicle - Google Patents
Direct drive-by-wire brake device for motor of miniature electric passenger vehicle Download PDFInfo
- Publication number
- CN209852288U CN209852288U CN201920442118.8U CN201920442118U CN209852288U CN 209852288 U CN209852288 U CN 209852288U CN 201920442118 U CN201920442118 U CN 201920442118U CN 209852288 U CN209852288 U CN 209852288U
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Abstract
The utility model provides a drive-by-wire arresting gear is directly driven to miniature electronic passenger car motor, by casing end cover subassembly, including a motor, an end cap, a controller, and a cover plate, the drive mechanism subassembly, brake master cylinder coupling assembling and brake pedal coupling assembling constitute, the drive mechanism subassembly is by the worm axle, the worm wheel, the shaft, the gear, rack and transmission shaft are constituteed, the output shaft coaxial coupling of worm axle one end and motor, the rotation of the worm axle other end is installed on the casing lateral wall, the one side at the worm axle is installed perpendicularly to the shaft, the rotatory installation on the casing lateral wall in shaft both ends, the worm wheel is coaxial to be linked firmly in shaft one end and mesh mutually with the worm axle, the gear is coaxial to be linked firmly at the shaft. The utility model discloses an integrated form design is in order to reduce the shared volume of arresting gear, is convenient for arrange to adopt mechanical transmission to press with improvement response speed and accurate accuse.
Description
Technical Field
The utility model belongs to the technical field of car drive-by-wire braking, in particular to miniature electronic passenger car motor directly drives drive-by-wire arresting gear.
Background
With the development of the automobile industry, various technologies of automobiles are gradually mature, people pay more and more attention to the automobile safety, and an automobile braking system is the most central part of the automobile safety and is a decisive factor for the future development of the automobiles. The conventional automobile brake system adopts a vacuum booster, and because the structure is complex, the volume is large, and the vacuum booster is very dependent on an engine, the application of the vacuum booster is less and less at present. In order to meet the requirements of overall arrangement and braking performance of automobiles, a brake-by-wire system which has the advantages of high integration level, stable performance, independence from an engine and the like gradually enters the field of view of the public.
The existing brake-by-wire systems are classified into mechanical brake-by-wire systems and hydraulic brake-by-wire systems. The hydraulic brake-by-wire system is widely applied to the brake-by-wire system, adopts a motor boosting structure, and controls the motor through the ECU so as to realize braking under various working conditions. However, the motor-assisted hydraulic brake-by-wire system has the disadvantages of slow response, more parts, low integration level, large volume and inconvenience in arrangement.
Disclosure of Invention
To the defect that exists among the above-mentioned prior art, the utility model provides a miniature electronic passenger car motor directly drives control device, the utility model discloses an integrated form design is in order to reduce the shared volume of arresting gear, is convenient for arrange to adopt mechanical transmission to press with improvement response speed and accurate accuse. With the attached drawings, the technical scheme of the utility model is as follows:
a motor direct-drive wire control brake device of a miniature electric passenger vehicle comprises a shell end cover assembly, a motor, a transmission mechanism assembly, a brake master cylinder connecting assembly and a brake pedal connecting assembly, wherein the transmission mechanism assembly comprises a worm shaft 8, a worm wheel 21, a wheel shaft 31, a gear 19, a rack 18 and a transmission shaft 20, one end of the worm shaft 8 is coaxially connected with an output shaft of a motor 2, the other end of the worm shaft 8 is rotatably installed on the side wall of the shell, the wheel shaft 31 is vertically installed on one side of the worm shaft 8, two ends of the wheel shaft 31 are rotatably installed on the side wall of the shell, the worm wheel 21 is coaxially fixedly connected with one end of the wheel shaft 31 and meshed with the worm shaft 8, the gear 19 is coaxially fixedly connected with the other end of the wheel shaft 31, the transmission shaft 20 is supported and;
the brake master cylinder connecting component is connected between the transmission mechanism component and the master cylinder assembly 24;
the brake pedal connecting assembly is connected between the transmission mechanism assembly and the brake pedal.
Furthermore, the shell end cover assembly consists of a left shell 3, a right shell 9, a first bearing end cover 11, a second bearing end cover 25 and a third bearing cover 35, the bolt connecting assembly of the left shell 3 and the right shell 9 is oppositely arranged and fixedly connected to form the shell, and a rubber gasket 4 is arranged at the outer edge of the connection of the left shell 3 and the right shell 9;
the worm shaft 8 is arranged on the side wall of the right shell 9 through a first angular contact ball bearing 10, and a first bearing end cover 11 is correspondingly arranged at the outer end of the first angular contact ball bearing 10;
one end of the wheel shaft 31 is mounted on one side wall of the butt joint of the left shell 3 and the right shell 9 through a second angular contact ball bearing 28, and a second bearing end cover 25 is correspondingly mounted at the outer end of the second angular contact ball bearing 28;
the other end of the wheel shaft 31 is installed on the other side wall of the butt joint of the left shell 3 and the right shell 9 through a third angular contact ball bearing 33, and a third bearing cover 35 is correspondingly installed at the outer end of the third angular contact ball bearing 33.
Further, the brake master cylinder connecting assembly is composed of a master cylinder push rod base 45, a rubber reaction disc 22, a master cylinder push rod 23 and a master cylinder piston rod 44, wherein a bottom groove of the master cylinder push rod base 45 is installed in a matched mode with the end face of the rack 18, the rubber reaction disc 22 is installed between the bottom of the master cylinder push rod base 45 and the end faces of the rack 18 and the transmission shaft 20, the master cylinder piston rod 44 and the rod end of the master cylinder push rod base 45 are coaxially arranged in an opposite mode, blind holes are formed in the end faces, opposite to the rod end of the master cylinder piston rod 44 and the rod end of the master cylinder push rod base 45, of the master cylinder push rod 23, one end of the master cylinder push rod 23 is fixedly connected into the blind hole of the rod end.
Further, brake pedal coupling assembling comprises U type joint 13, pedal lever 14, rubber sleeve 15, pedal return spring 16 and rubber pad 17, wherein, 14 one end of pedal lever is passed the casing lateral wall and is connected with 20 sphere contacts of transmission shaft, rubber pad 17 is installed between the bulb end of transmission shaft 20 and pedal lever 14, the 14 other end of pedal lever links firmly with U type joint 13, U type joint links to each other with brake pedal, pedal return spring 16 suit is between the middle part draw-in groove of pedal lever 14 and casing lateral wall, the outside at pedal return spring 16 is wrapped in to rubber sleeve 15, it is spacing that the shaft shoulder of pedal lever 14 is passed through to rubber sleeve 15 one end, the 15 other end of rubber sleeve is spacing outside the casing through 14 sphere ends of pedal lever.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the motor direct-drive line control brake device of the miniature electric passenger vehicle is designed in an integrated mode, has compact structural design and can save occupied space;
2. the motor direct-drive line control brake device of the miniature electric passenger vehicle adopts mechanical transmission, has higher response speed and higher reliability;
3. the motor direct-drive line control brake device of the miniature electric passenger vehicle can realize active pressure build-up, and when a sensor detects an emergency brake signal and a driver does not step on a brake pedal in time, the motor directly drives the right follow-up device to carry out active pressure build-up braking;
4. when the motor direct-drive line control brake device of the miniature electric passenger vehicle is used for normal pressure build braking, the braking force is jointly generated by a driver and the motor, and the control precision of the motor is between 0.1 and 0.3MPa, so that accurate pressure control can be realized;
5. the motor direct-drive line control brake device of the miniature electric passenger vehicle can realize the complete decoupling of the brake force, the thrust of the piston of the brake master cylinder is provided by the motor assistance and the pedal force of the driver, the motor assistance and the pedal force are not influenced mutually and are both independent work;
6. miniature electronic passenger car motor directly drives drive-by-wire arresting gear and can realize the inefficacy braking, when braking system motor became invalid, can realize the outage inefficacy braking by the driver steps on brake pedal.
Drawings
FIG. 1 is a front view of a direct drive-by-wire brake control device of a motor of a miniature electric passenger vehicle;
FIG. 2 is a left side view of the motor direct drive wire control brake device of the miniature electric passenger vehicle of the present invention;
FIG. 3 is a top view of the motor direct drive wire control brake device of the miniature electric passenger vehicle according to the present invention;
FIG. 4 is an isometric view of the internal transmission mechanism assembly of the direct drive-by-wire brake device of the motor of the miniature electric passenger vehicle;
FIG. 5 is a front view of the left housing of the direct drive-by-wire brake device of the motor for a miniature electric passenger vehicle according to the present invention;
fig. 6 is a left side view of the left casing of the direct drive-by-wire brake device of the motor of the miniature electric passenger vehicle according to the present invention;
fig. 7 is a top view of the left casing of the direct drive-by-wire brake device of the motor of the miniature electric passenger vehicle according to the present invention;
FIG. 8 is a front view of the right housing of the direct drive-by-wire brake device of the motor for a miniature electric passenger vehicle according to the present invention;
FIG. 9 is a left side view of the right housing of the direct drive-by-wire brake device of the motor for a miniature electric passenger vehicle according to the present invention;
fig. 10 is a top view of the right housing of the direct drive-by-wire brake device of the motor for a miniature electric passenger vehicle according to the present invention;
in the figure:
1. a motor bolt; 2, a motor; 3, a left shell; 4, rubber gasket;
5. a housing bolt; 6, a shell nut; a housing spring washer; 8, a worm shaft;
9. a right housing; 10. a first angular contact ball bearing; a first bearing end cap; a first end cap bolt;
a U-shaped joint; a foot bar; 15, rubber sleeve; a pedal return spring;
17. a rubber pad; a rack; 19, a gear; 20. a drive shaft;
21. a worm gear; a rubber reaction disk; a master cylinder push rod; a master cylinder assembly;
25. a second bearing end cap; a second end cap bolt; positioning pins; a second angular contact ball bearing;
29. a first sleeve; a key 30; a wheel axle; a second sleeve;
33. a third contact ball bearing; a third end cap bolt; a third bearing end cap; a left housing large circular hole;
37. a left shell small circular hole; a semicircular bracket; a left housing half-round hole; 40, a semicircular hole of the right shell;
41. a right shell large circular hole; right housing small circular aperture; 43. a boss; a master cylinder piston rod;
45. a master cylinder push rod base.
Detailed Description
For further explanation the technical solution and the specific working process of the present invention, in combination with the drawings of the specification, the specific embodiment of the present invention is as follows:
the utility model provides a miniature electronic passenger car motor directly drives drive-by-wire arresting gear, the motor directly drives drive-by-wire arresting gear one end and links to each other with the brake master cylinder, and the other end links to each other with brake pedal, the motor directly drives drive-by-wire arresting gear and comprises casing end cover subassembly, motor, drive mechanism subassembly, brake master cylinder coupling assembling and brake pedal coupling assembling.
As shown in fig. 1, the housing end cap assembly is composed of a left housing 3, a right housing 9, a first bearing end cap 11, a second bearing end cap 25, and a third bearing cap 35.
As shown in fig. 5, 6 and 7, it has coaxial left casing semicircle orifice 39 to open on the lateral wall around left casing 3, it has left casing major-circle hole 36 to open on the left side wall of left casing 3, and it has four bolted connection holes to distribute around left casing major-circle hole 36, it has left casing minor-circle hole 37 to open on the left side wall of left casing 3 below left casing major-circle hole 36, and the both sides of left casing minor-circle hole 37 distribute and have two threaded connection holes, still be equipped with semicircular bracket 38 in the bottom of left casing 3, it has eight screw holes and two pinhole that are used for the location to follow evenly distributed on left casing 3's the connection outer edge.
As shown in fig. 8, 9 and 10, an annular boss 43 is arranged above the right side wall of the right casing 9, the boss 43 is coaxially provided with a right casing large circular hole 41, a threaded hole is formed in the outer edge end surface of the boss 43, and is matched with a left casing semicircular hole 39 on the front and rear side walls of the left casing 3, a coaxial right casing semicircular hole 40 is formed in the front and rear side walls of the right casing 9, the left casing semicircular hole 39 and the right casing semicircular hole 40 on the same side are spliced to form a complete combined circular hole, a right casing small circular hole 42 is arranged below the right side wall of the right casing 9, and eight threaded holes and two pin holes are uniformly distributed on the outer edge of the connection of the right casing 9 correspondingly to the left casing 3.
As shown in fig. 1, the left casing 3 and the right casing 9 are arranged oppositely, a rubber gasket 4 is arranged between the connecting outer edges of the left casing 3 and the right casing 9, eight threaded holes on the connecting outer edges of the left casing 3 and the right casing 9 are overlapped and fixedly connected through a bolt connection assembly distributed along the outer edges, and the bolt connection assembly is composed of a casing bolt 5, a casing nut 6 and a casing spring washer.
As shown in fig. 1 and 2, the first bearing end cap 11 is mounted on the end face of the boss 43 of the right housing 9 by the first end cap bolt 12, and the second bearing end cap 25 and the third bearing end cap 35 are mounted at the combined round holes of the left housing 3 and the right housing 9 by the second end cap bolt 26 and the third end cap bolt 34, respectively.
As shown in fig. 1 and 3, the motor 2 is disposed at a left housing large circular hole 36 of the left housing 3, and the housing of the motor 2 is mounted on the side wall of the brake housing by the motor bolt 1.
The gear assembly is located inside the brake housing and, as shown in fig. 1, 2, 3 and 4, is composed of a worm shaft 8, a worm wheel 21, a wheel shaft 31, a gear 19, a rack 18 and a transmission shaft 20.
One end of the worm shaft 8 is coaxially connected with the output shaft of the motor 2 through a coupler, and the other end of the worm shaft 8 is rotatably connected to the side wall of the right housing 9 through a first angular contact ball bearing 10 arranged in a right housing large circular hole 41.
The wheel shaft 31 is installed below the worm shaft 8, the axis of the wheel shaft 31 is perpendicular to the axis of the worm shaft 8, one end of the wheel shaft 31 is rotatably installed on one side wall of the left housing 3 and the right housing 9 through a second angular contact ball bearing 28, the second angular contact ball bearing 28 is installed in a combined round hole on one side, the other end of the wheel shaft 31 is rotatably installed on the other side wall of the left housing 3 and the right housing 9 through a third angular contact ball bearing 33, and the third angular contact ball bearing 33 is installed in a combined round hole on the other side.
The worm wheel 21 is coaxially arranged at one end of the wheel shaft 31 through a connecting key, the worm wheel 21 is positioned under the worm shaft 8 and is meshed with the worm shaft 8 above the worm wheel 21, a second sleeve 32 is arranged between one side of the worm wheel 21 and the end face of the inner ring of the third angular contact ball bearing 33, the other side of the worm wheel 21 abuts against one end face of a shaft shoulder of the wheel shaft 31, and the axial positioning of the worm wheel 21 is realized through the second sleeve 32 and the shaft shoulder of the wheel shaft 31.
The gear 19 is coaxially arranged at the other end of a wheel shaft 31 through a key 30, a first sleeve 29 is arranged between one side of the gear 19 and the end surface of the inner ring of the second angular contact ball bearing 28, the other side of the gear 19 is abutted against the other end surface of the shaft shoulder of the wheel shaft 31, and the axial positioning of the gear 19 is realized through the first sleeve 29 and the shaft shoulder of the wheel shaft 31.
The transmission shaft 20 is arranged below the gear 19, the axis of the transmission shaft 20 is vertical to the axis of the wheel shaft 31, and the lower middle part of the transmission shaft 20 is supported and arranged above the bottoms of the left shell 3 and the right shell 9 through a semicircular bracket 38 at the bottom of the left shell 3; the rack 18 is a hollow sleeve-shaped structure, the rack 18 is slidably sleeved on the transmission shaft 20, the tooth surface of the rack 18 is positioned right below the gear 19, and the rack 18 is meshed with the gear 19.
In the transmission mechanism assembly, a worm shaft 8 rotates under the driving of a motor 2, the worm shaft 8 drives a worm wheel 21 meshed with the worm shaft to rotate, the worm wheel 21 drives a gear 19 coaxially connected with the worm wheel 21 to synchronously rotate, and a rack 18 moves horizontally under the driving of the gear 19 meshed with the rack.
Brake master cylinder coupling assembling's structure is with patent application number: 2017104947983, the brake cylinder assembly disclosed in the patent document entitled "brake-by-wire device assisted by a dc motor" is similar in structure.
As shown in fig. 1, the brake master cylinder connecting assembly is a connecting structure between the transmission mechanism assembly and the master cylinder assembly 24, wherein the master cylinder assembly 24 is mounted on the side wall of the left housing 3 through a left housing small circular hole 37.
The brake master cylinder attachment assembly is comprised of a master cylinder push rod mount 45, a rubber reaction disc 22, a master cylinder push rod 23 and a master cylinder piston rod 44. The bottom recess of master cylinder push rod base 45 matches the installation with the terminal surface of the rack 18 of suit in the transmission shaft 20 outside, rubber reaction dish 22 is installed between the bottom of master cylinder push rod base 45 and the terminal surface of rack 18 and transmission shaft 20, master cylinder piston rod 44 sets up with master cylinder push rod base 45's the coaxial looks in rod end, and all opens along the axial on master cylinder piston rod 44 and master cylinder push rod base 45's the terminal surface in opposite directions has the blind hole, the one end of master cylinder push rod 23 links firmly in the blind hole of master cylinder push rod base 45's rod end along the axial, and the other end of master cylinder push rod 23 is connected with master cylinder piston rod 44's blind hole bottom contact.
Brake master cylinder coupling assembling is with patent application number: 2017104947983, the difference in structure of the brake cylinder assembly disclosed in the patent document entitled "a brake-by-wire device based on DC motor assistance", the brake master cylinder connection assembly does not need to be provided with a return spring, but is reversely driven by the motor 2, and passes through the transmission mechanism assembly, thereby driving the master cylinder push rod 23 to move reversely, at this time, the thrust of the right end of the master cylinder push rod 23 and the master cylinder piston rod 44 disappears, and the brake cylinder assembly returns under the hydraulic pressure action of the master cylinder assembly.
In the brake master cylinder connecting component, under the drive of the axial linear motion of the rack 18 or the transmission shaft 20, the displacement input of the master cylinder assembly 24 is realized to control the action of the master cylinder assembly 24.
Brake pedal coupling assembling is connection structure between drive mechanism subassembly and the brake pedal, and its structure is with patent application number: 2017104947983 entitled "brake-by-wire device with DC motor assist", is similar in structure to the valve stem assembly disclosed in the patent document.
As shown in fig. 1, the brake pedal connecting assembly is composed of a U-shaped joint 13, a pedal lever 14, a rubber sleeve 15, a pedal return spring 16 and a rubber pad 17. The one end of foot rest lever 14 passes right casing small circle shape hole 42 on the right casing 9 lateral wall and is connected with 20 sphere contacts of transmission shaft, rubber pad 17 is installed between the bulb end of transmission shaft 20 and foot rest lever 14, the other end and the U type of foot rest lever 14 connect 13 and link firmly, U type connects 13 opening installation outwards, and U type connects 13 and brake pedal links to each other to the transmission is from the displacement of brake pedal input, the 16 suit of footboard return spring is between the middle part draw-in groove of foot rest lever 14 and right casing 9 lateral wall, the outside at footboard return spring 16 of rubber sleeve 15 cladding, and it is spacing that the shaft shoulder of foot rest lever 14 is passed through to rubber sleeve 15 right-hand member, and the rubber sleeve 15 left end passes through 14 ball-end restriction outside right casing 9 to guarantee foot rest lever 14 rubber sleeve 15 is in compression state under natural state.
Brake pedal coupling assembling's structure is with patent application number: 2017104947983, the structure of the valve rod component disclosed in the patent document entitled "brake-by-wire device based on DC motor assistance" is different, the utility model discloses in the brake pedal coupling assembling is fixed on the casing, can effectively avoid the friction loss of rubber sleeve 15 to realize the sealing performance of the junction of pedal lever 14 and transmission shaft 20.
The specific working process of the direct drive-by-wire brake device of the motor of the miniature electric passenger vehicle is as follows:
when a driver steps on a brake pedal, a vehicle ECU receives a brake signal detected and sent by a brake pedal stroke sensor, the ECU sends an instruction to the motor 2 after calculation and analysis, the motor 2 starts to work to drive the transmission mechanism assembly to work, after the transmission mechanism assembly, the rotary motion output by the motor 2 is changed into linear motion, and the transmission shaft 20 pushes the main cylinder push rod 23 to further carry out the pressure building and braking processes.
The motor directly drives drive-by-wire arresting gear and can realize including: three brake control working processes of power-assisted brake control, active brake control and failure brake control are specifically explained as follows:
1. boosting and braking:
when the driver steps on brake pedal, brake pedal's displacement motion input spreads into via the U type joint 13 that links to each other with brake pedal into among the arresting gear, U type joint 13 promotes pedal lever 14 rectilinear motion forward, and pedal lever 14 and then compress pedal return spring 16 compression and produce deformation, and pedal lever 14 continues to promote transmission shaft 20 rectilinear motion forward, transmission shaft 20 is at rectilinear motion's forward in-process, after overcoming the clearance between its and rubber reaction dish 22, promotes rubber reaction dish 22 rectilinear motion forward, and rubber reaction dish 22 is through promoting master cylinder push rod base 45 and then promote master cylinder push rod 23 to move forward, finally promotes master cylinder piston rod 44 through master cylinder push rod 23, realizes the driver's pedal displacement input to master cylinder 24.
When a driver steps on a brake pedal, a vehicle ECU receives a brake signal sent by a brake pedal stroke sensor, the ECU sends an instruction to a motor 2 after calculation and analysis, the motor 2 starts to work, the motor 2 drives a worm shaft 8 to rotate, the worm shaft 8 drives a worm wheel 21 to rotate, the worm wheel 21 drives a gear 19 to synchronously rotate through a wheel shaft 31, the gear 19 further drives a rack 18 to do forward linear motion, the rack 18 pushes a rubber reaction disc 22 to move forward after overcoming a gap between the rack 18 and the rubber reaction disc 22, the rubber reaction disc 22 pushes a main cylinder push rod 23 to move forward by pushing a main cylinder push rod base 45, and finally pushes a main cylinder piston rod 44 by pushing the main cylinder push rod 23, so that the assisting power of a brake main cylinder 24 is input along with displacement, namely assisting power braking.
2. Active braking:
when a vehicle-mounted camera or a vehicle-mounted radar on a vehicle detects that the vehicle is about to face danger and needs to be braked and a driver does not step on a brake pedal in time, the vehicle ECU directly controls the motor 2 of the braking device to actively drive and brake, the vehicle ECU sends an active drive control signal to the motor 2, the motor 2 drives the worm shaft 8 to rotate, the worm shaft 8 drives the worm wheel 21 to rotate, the worm wheel 21 drives the gear 19 to synchronously rotate through the wheel shaft 31, the gear 19 further drives the rack 18 to do forward linear motion, the rubber reaction disc 22 is pushed to move forward after the rack 18 overcomes a gap between the rack and the rubber reaction disc 22, the rubber reaction disc 22 pushes the main cylinder push rod base 45 to further push the main cylinder push rod 23 to move forward, the main cylinder push rod 44 is pushed through the main cylinder push rod 23 to control the brake main cylinder 24 to brake, and finally, active braking is realized.
3. Failure braking:
when the brake motor of the vehicle fails, the brake motor stops working, at this time, the driver steps on the brake pedal, the displacement motion input of the brake pedal is transmitted into the brake device of the present invention through the U-shaped joint 13 connected with the brake pedal, the U-shaped joint 13 pushes the pedal rod 14 to move linearly forward, the pedal rod 14 further compresses the pedal return spring 16 to generate deformation, the pedal rod 14 continues to push the transmission shaft 20 to move linearly forward, the transmission shaft 20 pushes the rubber reaction disc 22 to move forward after overcoming the clearance between the transmission shaft 20 and the rubber reaction disc 22 in the process of moving linearly forward, the rubber reaction disc 22 pushes the main cylinder push rod base 45 to push the main cylinder push rod 23 to move forward, and finally pushes the main cylinder piston rod 44 through the main cylinder push rod 23 to realize the driver pedal displacement input to the brake main cylinder 24, therefore, emergency braking when the motor of the braking system fails is realized.
Claims (4)
1. The utility model provides a miniature electronic passenger car motor directly drives drive-by-wire arresting gear, comprises casing end cover subassembly, motor, drive mechanism subassembly, brake master cylinder coupling assembling and brake pedal coupling assembling, its characterized in that:
the transmission mechanism assembly comprises a worm shaft (8), a worm wheel (21), a wheel shaft (31), a gear (19), a rack (18) and a transmission shaft (20), wherein one end of the worm shaft (8) is coaxially connected with an output shaft of the motor (2), the other end of the worm shaft (8) is rotatably installed on the side wall of the shell, the wheel shaft (31) is vertically installed on one side of the worm shaft (8), the two ends of the wheel shaft (31) are rotatably installed on the side wall of the shell, the worm wheel (21) is coaxially fixedly connected to one end of the wheel shaft (31) and meshed with the worm shaft (8), the gear (19) is coaxially fixedly connected to the other end of the wheel shaft (31), the transmission shaft (20) is supported and installed at the bottom of the shell, and the rack (18) is slidably sleeved on the transmission shaft;
the brake master cylinder connecting assembly is connected between the transmission mechanism assembly and the master cylinder assembly (24);
the brake pedal connecting assembly is connected between the transmission mechanism assembly and the brake pedal.
2. The motor direct-drive wire-control brake device of the miniature electric passenger vehicle as claimed in claim 1, wherein:
the shell end cover assembly consists of a left shell (3), a right shell (9), a first bearing end cover (11), a second bearing end cover (25) and a third bearing cover (35), the left shell (3) and the right shell (9) are oppositely and fixedly connected through a bolt connecting assembly to form the shell, and a rubber gasket (4) is arranged at the outer connecting edge of the left shell (3) and the right shell (9);
the worm shaft (8) is arranged on the side wall of the right shell (9) through a first angular contact ball bearing (10), and a first bearing end cover (11) is correspondingly arranged at the outer end of the first angular contact ball bearing (10);
one end of the wheel shaft (31) is mounted on one side wall of the butt joint of the left shell (3) and the right shell (9) through a second angular contact ball bearing (28), and a second bearing end cover (25) is correspondingly mounted at the outer end of the second angular contact ball bearing (28);
the other end of the wheel shaft (31) is installed on the other side wall of the butt joint of the left shell (3) and the right shell (9) through a third angular contact ball bearing (33), and a third bearing cover (35) is correspondingly installed at the outer end of the third angular contact ball bearing (33).
3. The motor direct-drive wire-control brake device of the miniature electric passenger vehicle as claimed in claim 1, wherein:
the brake master cylinder connecting assembly is composed of a master cylinder push rod base (45), a rubber reaction disc (22), a master cylinder push rod (23) and a master cylinder piston rod (44), wherein a bottom groove of the master cylinder push rod base (45) is installed in a matched mode with the end face of the rack (18), the rubber reaction disc (22) is installed between the bottom of the master cylinder push rod base (45) and the end faces of the rack (18) and the transmission shaft (20), the master cylinder piston rod (44) and the rod end of the master cylinder push rod base (45) are coaxially and oppositely arranged, blind holes are formed in the end faces, opposite to the rod end, of the master cylinder piston rod (44) and the rod end of the master cylinder push rod base (45) along the axial direction, one end of the master cylinder push rod (23) is fixedly connected in the blind hole in the rod end of the master cylinder push rod base (45) along the.
4. The motor direct-drive wire-control brake device of the miniature electric passenger vehicle as claimed in claim 1, wherein:
brake pedal coupling assembling comprises U type joint (13), pedal pole (14), rubber sleeve (15), footboard return spring (16) and rubber pad (17), wherein, pedal pole (14) one end is passed the casing lateral wall and is connected with transmission shaft (20) sphere contact, install between the bulb end of transmission shaft (20) and pedal pole (14) rubber pad (17), pedal pole (14) other end links firmly with U type joint (13), U type joint links to each other with brake pedal, footboard return spring (16) suit is between the middle part draw-in groove and the casing lateral wall of pedal pole (14), rubber sleeve (15) cladding is in the outside of footboard return spring (16), the shaft shoulder that pedal pole (14) was passed through to rubber sleeve (15) one end is spacing, the rubber sleeve (15) other end is spacing in the casing outside through pedal pole (14) ball end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920442118.8U CN209852288U (en) | 2019-04-03 | 2019-04-03 | Direct drive-by-wire brake device for motor of miniature electric passenger vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920442118.8U CN209852288U (en) | 2019-04-03 | 2019-04-03 | Direct drive-by-wire brake device for motor of miniature electric passenger vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209852288U true CN209852288U (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920442118.8U Expired - Fee Related CN209852288U (en) | 2019-04-03 | 2019-04-03 | Direct drive-by-wire brake device for motor of miniature electric passenger vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209852288U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109910856A (en) * | 2019-04-03 | 2019-06-21 | 吉林大学 | A kind of miniature electric passenger car electric-machine directly-driven brake-by-wire device and its brake control method |
-
2019
- 2019-04-03 CN CN201920442118.8U patent/CN209852288U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109910856A (en) * | 2019-04-03 | 2019-06-21 | 吉林大学 | A kind of miniature electric passenger car electric-machine directly-driven brake-by-wire device and its brake control method |
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