CN107128295A - A kind of brake-by-wire device based on direct current generator power-assisted - Google Patents
A kind of brake-by-wire device based on direct current generator power-assisted Download PDFInfo
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- CN107128295A CN107128295A CN201710494798.3A CN201710494798A CN107128295A CN 107128295 A CN107128295 A CN 107128295A CN 201710494798 A CN201710494798 A CN 201710494798A CN 107128295 A CN107128295 A CN 107128295A
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- pedal
- mounting bracket
- master cylinder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/745—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention discloses a kind of brake-by-wire device based on direct current generator power-assisted, in the apparatus, ball screw assembly, is arranged on case inside rear by bearing, valve block, which slides axially, to be connected in the housing of ball screw assembly, front end, valve body is installed in valve block anterior end surface with clutch pedal mounting bracket, and clutch pedal mounting bracket slides axially and is connected in valve body, pedal-rod sequentially passes through roller screw screw rod from rear to preceding vertically, valve block, clutch pedal mounting bracket and valve body, locking plate is by pedal-rod together with clutch pedal mounting bracket clamping locking, valve rod assembly is connected to the rear end of pedal-rod, brake the axially connecting front end in pedal-rod of cylinder component, direct current generator is arranged on below hull outside, little gear is arranged on motor output shaft, gear wheel is arranged on the outside of ball-screw nut, gear wheel is engaged with little gear.The present invention is by brake device structure reasonably optimizing, making its small volume, and integrated level is high, can effectively save brakes volume shared in arrangement.
Description
Technical field
The invention belongs to brake system of car technical field.More specifically to a kind of based on direct current generator power-assisted
Brake-by-wire device.
Background technology
The brakes of orthodox car generally uses vacuum booster unit, and it has the disadvantage that volume is larger, complicated, integrated
Spend relatively low, part complex and big to engine degree of dependence, vacuum servo system has been eliminated on current most of automobiles
The use of system.As the totality of current automobile industry is developed rapidly, people propose very high to the integration of automobile and lightweight
Requirement, the demand of the brake device for car of high integration also gradually increases.It is stable to performance in order to meet correlative technology field
And the pursuit of the high brakes of integrated level needs with research and development, people have gradually started the research and spy to line control brake system
Rope.
Having studied the line control brake system of maturation at present mainly has " mechanical line control brake system " and " fluid pressure type line traffic control
Brakes ".Fluid pressure type line control brake system generally uses motor booster type structure, is controlled by electronic control unit ECU
Motor, to realize the fast braking under conventional operating mode and failure damped condition.The fluid pressure type line traffic control of the motor booster type of now
Parts of its general brake apparatus of brakes itself are more, and arrangement gets up more scattered, so current brake apparatus is deposited
Larger in volume, integrated level is relatively low, arranges that occupied area is larger on automobile chassis, is unfavorable for emerging ev industry to height
Many defects such as the requirement of integrated level.
The content of the invention
For the defect in the presence of above-mentioned prior art, the invention provides a kind of line traffic control based on direct current generator power-assisted
Brake apparatus, to reduce the volume of brake apparatus, improve integrated level.With reference to Figure of description, technical scheme is as follows：
A kind of brake-by-wire device based on direct current generator power-assisted, by valve rod assembly, housing, ball screw assembly, valve block
16th, pedal-rod 17, valve body 18, clutch pedal mounting bracket 19, locking plate 20, braking cylinder component, direct current generator 31, little gear 36 and gear wheel 39
Composition；
The ball screw assembly, that roller screw screw rod 5 and ball-screw nut 6 are constituted is arranged in housing by bearing
Side rear, the valve block 16, which slides axially, to be connected in the housing of ball screw assembly, front end, valve body 18 and clutch pedal mounting bracket 19
It is installed in the anterior end surface of valve block 16, and clutch pedal mounting bracket 19 slides axially and is connected in valve body 18；The pedal-rod 17
Vertically roller screw screw rod 5, valve block 16, clutch pedal mounting bracket 19 and valve body 18, and pedal-rod 17 are sequentially passed through from rear to preceding
Through after clutch pedal mounting bracket 19, locking plate 20 is radially by pedal-rod 17 together with the clamping locking of clutch pedal mounting bracket 19；
The axially connecting rear end in the pedal-rod 17 of the valve rod assembly, the braking cylinder component it is axially connecting
The front end of the pedal-rod 17, displacement of the driver to brake pedal is inputted successively through valve rod assembly, pedal-rod 17, checking cylinder group
Part, is finally-transmitted to master cylinder 26；
The direct current generator 31 is arranged on below hull outside, and motor output shaft 33 pierces into case inside, the little gear
36 are arranged on motor output shaft 33, and the gear wheel 39 is arranged on the outside of ball-screw nut 6, and gear wheel 39 and small tooth
Wheel 36 is engaged, and the rotary motion of motor output shaft 33 is transferred to ball-screw nut 6 successively through little gear 36, gear wheel 39, is rolled
The tandem of 6 rotation driving roller screw screw rod of screw nut 5 is moved.
The valve rod assembly is made up of u shaped connector 1, valve rod 2, rubber sleeve 3 and valve rod return spring 4, the front end of valve rod 2 with
The rear end sphere-contact connection of pedal-rod 17, rear end and the u shaped connector 1 of valve rod 2 are connected, and valve rod return spring 4 is sleeved on valve rod 2
Front end outer side, rubber sleeve 3 is coated on the outside of valve rod return spring 4.
The braking cylinder component is by master cylinder push rod seat 22, master cylinder push rod 24, damping rubber block 23, main cylinder piston-rod 25, system
Dynamic master cylinder 26 and master cylinder push rod return spring 27 are constituted, and master cylinder push rod seat 22 is arranged on the front end of valve body 18, and damping rubber block 23 is pacified
Between master cylinder push rod 22 bottoms of seat and pedal-rod 17, the one end of master cylinder push rod 24 is connected in before master cylinder push rod seat 22 vertically
End, the other end of master cylinder push rod 24 contacts connection, master cylinder push rod return spring 27 with the blind via bottom of the rear end face of main cylinder piston-rod 25
The outside of master cylinder push rod seat 22 is sleeved on, the one end of master cylinder push rod return spring 27 is acted against on the front end face of valve body 18, other end top
Lean against on housing inner face, the master cylinder 26 is fixed on the outside of housing forward end by ring flange.
The housing is made up of back casing 12 and procapsid 28, between the back casing 12 and procapsid 28 by positioned at pair
Two alignment pins 35 of Angle Position achieve a butt joint positioning, and are bolted part and are assembled together, to ensure two housings in work
Relative position keeps constant in work；
Parallel along the longitudinal direction and be symmetrically provided with two translots on the inner surface of procapsid 28, valve block 16, which is slided, to be connected
It is connected in the translot.
A through hole is provided with the center of valve block 16, the valve block 16 is arranged on the front side of ball-screw screw rod 5, valve
Housing 16 is coordinated by the through hole at its center with the boss of the front end of ball-screw screw rod 5 to be installed；
Through hole both sides at the center of valve block 16, symmetrically offer two trapezoidal elongated holes, two of the clutch pedal mounting bracket 19
Side plate is vertically inserted in the trapezoidal elongated hole of correspondence；
Two arc short-bore, the two of the valve body 18 are further opened with the outside of two trapezoidal elongated holes of the valve block 16
Individual arc otic placode is vertically mounted in correspondence arc short-bore；
In the end positions of valve block 16, two rectangular shaped sliders are arranged with, the rectangular shaped slider is slidably connected at fore shell
In the translot opened up in body 28, valve block 16 is set to be slid back and forth in procapsid 28 along translot.
A centre bore is provided with the center of the clutch pedal mounting bracket 19, in the left and right sides of the end face of clutch pedal mounting bracket 19, and is hung down
Directly in the end face of clutch pedal mounting bracket 19, two trapezoidal side plates are arranged with, the trapezoidal elongated hole of the trapezoidal side plate and valve block 16 coordinates
Install；
On each trapezoidal side plate, two L-type lockholes are symmetrically provided with, the L-type lockhole is back-to-back symmetrical above and below to be set
Put, the L-shaped lockhole is engaged with locking plate 20, after pedal-rod 17 is installed in the centre bore of clutch pedal mounting bracket 19, locking plate 20 is pacified
Insert in L-type institute hole, pedal-rod 17 is radially locked in clutch pedal mounting bracket 19；
Two rectangular shaped sliders are also arranged with the upper and lower side of clutch pedal mounting bracket 19, the rectangular shaped slider is slidably connected at valve body
In the translot opened up in 18, clutch pedal mounting bracket 19 is set to be slid back and forth in valve body 18 along translot.
A round boss is provided with the front end of valve body 18, interstitial hole, the round boss are provided with the center of round boss
It is connected for the master cylinder push rod seat 22 with front side, the interstitial hole is used to install pedal-rod 17；The rear end of the valve body 18
Provided with two symmetrical arc otic placodes, two arc otic placodes of the valve body 18 are vertically fixedly mounted on two arcs of valve block 16
In shape short-bore；
Parallel along the longitudinal direction and be symmetrically provided with two translots on the inner surface of valve body 18, clutch pedal mounting bracket 19, which is slided, to be connected
It is connected in the translot.
Compared with prior art, the beneficial effects of the present invention are：
1. a kind of brake-by-wire device based on direct current generator power-assisted of the present invention to existing brake apparatus by entering
Row Rational structure optimizes, and by the parts Integrated Optimal Design such as master cylinder, braking motor, deceleration device, pedal-rod, makes its body
Product is smaller, and integrated level is higher, can effectively save brakes volume shared in arrangement, convenient arrangement.
2. a kind of direct current generator in brakes of the brake-by-wire device based on direct current generator power-assisted of the present invention
During failure, brake master cylinder piston bar is pushed directly on by pedal-rod, realize master cylinder displacement input, its fail stability compared with
It is good, travel safety can be effectively improved.
3. a kind of brake-by-wire device based on direct current generator power-assisted of the present invention can be applied not only to motor and help
Dynamic braking system, also can be applicable to line control brake system, and it can realize a variety of braking modes, and application prospect is relatively broad.
Brief description of the drawings
Fig. 1 is the entirety sectional view of the brake-by-wire device of the present invention based on direct current generator power-assisted；
Fig. 2 is the A-A directions sectional view of the brake-by-wire device of the present invention based on direct current generator power-assisted；
Fig. 3 is the B directions view of the brake-by-wire device of the present invention based on direct current generator power-assisted；
Fig. 4 is the C directions view of the brake-by-wire device of the present invention based on direct current generator power-assisted；
Fig. 5 is outside drawing after the assembling of the brake-by-wire device of the present invention based on direct current generator power-assisted；
Fig. 6 a be the brake-by-wire device of the present invention based on direct current generator power-assisted in, the front view of valve body；
Fig. 6 b be the brake-by-wire device of the present invention based on direct current generator power-assisted in, the side view of valve body；
Fig. 6 c be the brake-by-wire device of the present invention based on direct current generator power-assisted in, the top view of valve body；
Fig. 7 a be the brake-by-wire device of the present invention based on direct current generator power-assisted in, the front view of valve block；
Fig. 7 b be the brake-by-wire device of the present invention based on direct current generator power-assisted in, the side view of valve block；
Fig. 7 c be the brake-by-wire device of the present invention based on direct current generator power-assisted in, the top view of valve block；
Fig. 8 a be the brake-by-wire device of the present invention based on direct current generator power-assisted in, the front view of clutch pedal mounting bracket；
Fig. 8 b be the brake-by-wire device of the present invention based on direct current generator power-assisted in, the side view of clutch pedal mounting bracket；
Fig. 8 c be the brake-by-wire device of the present invention based on direct current generator power-assisted in, the top view of clutch pedal mounting bracket；
Fig. 9 a be the brake-by-wire device of the present invention based on direct current generator power-assisted in, the front view of locking plate；
Fig. 9 b be the brake-by-wire device of the present invention based on direct current generator power-assisted in, the side view of locking plate；
Fig. 9 c be the brake-by-wire device of the present invention based on direct current generator power-assisted in, the top view of locking plate；
In figure：
1.U type joints, 2. valve rods, 3. rubber sleeves, 4. valve rod return springs,
5. ball-screw screw rod, 6. ball-screw nuts, 7.M6 screws, 8. bearing (ball) covers,
9. sealing ring, 10. ball-screw balls, 11. first angular contact ball bearings, 12. back casings,
13.M6 nuts, 14. spring washers, 15.M6 bolts, 16. valve blocks,
17. pedal-rod, 18. valve bodies, 19. clutch pedal mounting brackets, 20. locking plates,
21. spring base, 22. master cylinder push rods seat, 23. damping rubber blocks, 24. master cylinder push rods,
25. main cylinder piston-rod, 26. master cylinders, 27. master cylinder push rod return springs, 28. procapsids,
29. motor flange disk, 30.M6 hexagon socket head cap screws, 31. direct current generators, 32. second angular contact ball bearings,
33. motor output shaft, 34. second sleeves, 35. alignment pins, 36. little gears,
37.M4 nuts, 38. flat keys, 39. gear wheels, 40. first sleeves.
Embodiment
For technical scheme of the present invention is expanded on further, with reference to Figure of description, embodiment of the invention is such as
Under：
As shown in figure 1, the invention provides a kind of brake-by-wire device based on direct current generator power-assisted, the brake-by-wire
Device is arranged between brake pedal and master cylinder, mainly by u shaped connector 1, valve rod 2, valve rod return spring 4, roller screw
Screw rod 5, ball-screw nut 6, back casing 12, valve block 16, pedal-rod 17, valve body 18, clutch pedal mounting bracket 19, locking plate 20, master cylinder
Ram seat 22, damping rubber block 23, master cylinder push rod 24, main cylinder piston-rod 25, master cylinder 26, master cylinder push rod return spring 27,
Procapsid 28, direct current generator 31, little gear 36 and gear wheel 39 are constituted.
As shown in Figure 1 and Figure 5, two alignment pins positioned at diagonal position are passed through between the back casing 12 and procapsid 28
35 achieve a butt joint positioning, and are assembled together by the connector being made up of M6 bolts, M6 nuts 13 and spring washer 14, to protect
Demonstrate,proving two housings, relative position keeps constant at work, and the two forms a main cavity, and other critical pieces of the present apparatus are pacified
In the main cavity.
As shown in Fig. 2 the u shaped connector 1 is a U-shaped support, u shaped connector 1 is open and installed outwardly, in u shaped connector 1
Mounting hole is provided with side plate, u shaped connector 1 is hinged by the brake pedal of mounting hole and automobile, so as to obtain the position of brake pedal
Move input；M10 internal thread hole is provided with the bottom plate of u shaped connector 1, in mating connection with the external screw thread of the rear end of valve rod 2.
The rear end of the valve rod 2 is machined with M10 external screw thread, and externally threaded tooth form and pitch with the bottom of u shaped connector 1
Internal thread it is identical, be connected between the rear end end external screw thread of valve rod 2 and the internal thread of the bottom plate of u shaped connector 1 by screw thread；Valve
The front end of bar 2 is bulb, and the blind hole that the bulb is opened up with the rear end of pedal-rod 17 is engaged installation；The stage casing of valve rod 2 is provided with axle
Shoulder.
The roller screw screw rod 5 is tubulose, the internal diameter of roller screw screw rod 5 and the back segment axle outside dimension of pedal-rod 17
Identical, roller screw screw rod 5 is sleeved on the back segment axle of pedal-rod 17, and the ball-screw nut 6 is front end provided with outer
Sleeve-shaped, ball-screw nut 6 is sleeved on the outside of roller screw screw rod 5；The inner circumferential surface and ball of ball-screw nut 6
Spiral helicine deep-slotted chip breaker is machined with the external peripheral surface of leading screw screw rod 5, the two is combined together to form spiral rolling track, described
Ball-screw ball 10 is provided with spiral rolling track；The ball-screw nut 6, ball-screw screw rod 5 and ball-screw ball 10
Ball guide screw nat is formed, it is the straight line that the rotary motion of ball-screw nut 6 is converted to ball-screw screw rod 5 that it, which is acted on,
It is mobile.Outer end face positioned at the front end of ball-screw nut 6 is in contact with the end face of the rear end of valve block 16.
The ball-screw nut 6, which coordinates, to be arranged in the boss shell of the rear side of back casing 12, and ball-screw nut 6 passes through the
The rear side of one angular contact ball bearing 11 and back casing 12 is connected, and is provided with the rear end of back casing 12 bearing (ball) cover
8, the ring flange of the bearing (ball) cover 8 is fixedly mounted on the rear end face of back casing 12 by six M6 screws 7, the bearing end
The front end of lid 8 is acted against on the outer ring of the first angular contact ball bearing 11, and sealing ring is also equipped with the inner side of bearing (ball) cover 8, with
Prevent external dust from entering in back casing 12.
The valve rod return spring 4 is volute spring, the self-return for making valve rod 2；The rear side of valve rod return spring 4
Cone end is fixedly connected in the anterior end surface of the stage casing shaft shoulder of valve rod 2, and the cone bottom of the front side of valve rod return spring 4 is against ball wire
In the back end surface of thick stick nut 6；In addition, also coating a rubber sleeve 3, the rubber in the outside of valve rod return spring 4 and valve rod 2
Gum cover 3 is used to prevent the dust in the external world from entering in valve rod 2 and its front end bindiny mechanism.
The gear wheel 39 is arranged on the front side of ball-screw nut 6 by flat key 38, and the front end face of gear wheel 39 is leaned
On the outer rear end face of ball-screw nut 6, between the inner ring of the rear end face of gear wheel 39 and the first angular contact ball bearing 11
First sleeve 40 is set with, and then realizes the axial limiting to gear wheel 39.The gear wheel 39 and ball-screw nut 6
Flat key is connected, and enables gear wheel 39 to drive ball-screw nut 6 to be rotated, to realize the transmission of power.
As shown in Fig. 2 valve block 16 is arranged in procapsid 28, the rear end face of valve block 16 is acted against before back casing 12
Hold on outer, realize spacing.As shown in Figure 1, Figure 2 with shown in Fig. 7a-7c, the valve block 16 is ellipse；In valve block 16
The heart is provided with a through hole, and the valve block 16 is arranged on the front side of ball-screw screw rod 5, the through hole that valve block 16 passes through its center
Coordinate with the boss of the front end of ball-screw screw rod 5 and install, the outer front end face of ball-screw nut 6 just acts against valve block 16
Rear end face on；Through hole both sides at the center of valve block 16, are symmetrical with the short axle of oval valve block 16, two are offered vertically
Trapezoidal elongated hole, clutch pedal mounting bracket 19 is installed on the front side of valve block 16, as shown by figures 8 a-8 c, and the clutch pedal mounting bracket 19 is provided with two
Trapezoidal side plate, two side plates of the clutch pedal mounting bracket 19 are vertically mounted in two trapezoidal elongated holes of valve block 16；In the valve
Two arc short-bore are further opened with the outside of two trapezoidal elongated holes of housing 16, valve body 18 is also installed on the front side of valve block 16,
And valve body 18 is placed on the outside of clutch pedal mounting bracket 19, as shown in fig. 6a-6c, two symmetrical arcs are provided with the tail end of valve body 18
Otic placode, two arc otic placodes of the valve body 18 are vertically mounted in two arc short-bore of valve block 16, and the valve body 18
The arc short-bore of arc otic placode and valve block 16 be interference fit；It is right along the long axis direction two ends of the valve block 16 of ellipse
Claim provided with two rectangular shaped sliders, it is parallel along the longitudinal direction and be symmetrically provided with two translots, valve body on the inner surface of procapsid 28
The rectangular shaped slider of 16 ends of seat is slidably connected in the translot of procapsid 28, makes valve block 16 in the procapsid 28 along before translot
After slide.
As depicted in figs. 1 and 2, clutch pedal mounting bracket 19 is located at the front side of valve block 16, and is fixedly mounted on valve block 16, and
The clutch pedal mounting bracket 19 is located at the inner side of valve body 18.As shown in Figure 1, Figure 2 with shown in Fig. 8 a-8c, it is in above and below the end face of clutch pedal mounting bracket 19
The symmetrical arc of convex, left and right is in symmetrical line shape；The end face center of the clutch pedal mounting bracket 19 is provided with a centre bore, in this
Heart hole is used to install pedal-rod 17；In the left and right sides of the end face of clutch pedal mounting bracket 19, and perpendicular to the end face of clutch pedal mounting bracket 19, symmetrically set
There are two trapezoidal side plates, the trapezoidal elongated hole of the trapezoidal side plate and valve block 16 coordinates inserting；Two are provided with clutch pedal mounting bracket 19
Individual trapezoidal side plate, on each trapezoidal side plate, is symmetrically provided with two L-type lockholes, the L-type lockhole is back-to-back symmetrical above and below
Set, i.e., outwardly, the L-shaped lockhole on the trapezoidal side plate in the both sides of clutch pedal mounting bracket 19 is symmetrically opened up the L-type notch of L-type lockhole, the L
Shape lockhole is engaged with locking plate 20, and the size of L-type lockhole is slightly larger than the sectional dimension of locking plate 20, and pedal-rod 17 is installed to pedal branch
After in the centre bore of seat 19, locking plate 20 is assigned in L-type institute hole, and it is terraced through the trapezoidal side plate in side, pedal-rod 17, opposite side
Shape side plate, realization is locked in clutch pedal mounting bracket 19 by pedal-rod 17, clutch pedal mounting bracket 19 is synchronized with the movement with pedal-rod 17；In pedal
The upper and lower side of the end face of bearing 19 is also arranged with two rectangular shaped sliders, parallel and right along the longitudinal direction on the inner surface of valve body 18
The rectangular shaped slider being provided with two translots, the end face of clutch pedal mounting bracket 19 with claiming is slidably connected in the translot of valve body 18, makes pedal branch
Seat 19 slides back and forth in valve body 18 along translot.
As shown in Fig. 2 valve body 18 is located at the front side of valve block 16, and it is fixedly mounted on valve block 16, and 18 sets of valve body
It is placed between the outside of clutch pedal mounting bracket 19, and the front end face of valve body 18 and the front end face of clutch pedal mounting bracket 19 and leaves certain distance.Such as
Shown in Fig. 1, Fig. 2 and Fig. 6 a-6c, valve body 18 is ellipse；A round boss is provided with front side of the end face of valve body 18, it is convex in circle
The center of platform is provided with interstitial hole, and the round boss is used to be connected with the master cylinder push rod seat 22 of front side, and the interstitial hole is used
In installation pedal-rod 17；The tail end of the valve body 18 is provided with two symmetrical arc otic placodes, two arc ears of the valve body 18
Plate is vertically mounted in two arc short-bore of valve block 16, and the arc of the arc otic placode and valve block 16 of the valve body 18 is short
Hole is interference fit, realizes the fixed installation of valve body 18 and valve block 16；It is parallel along the longitudinal direction on the inner surface of valve body 18
And two translots are symmetrically provided with, clutch pedal mounting bracket 19 slides back and forth along chute.
The round boss of the front side of valve body 18 is engaged installation with the circular groove of 22 rear ends of master cylinder push rod seat, and convex in circle
Space is left between platform and circular groove, damping rubber block 23, the appearance of the damping rubber block 23 are filled with the space
Face with round boss and circular groove joint.
Mutually installed between above-mentioned valve block 16, clutch pedal mounting bracket 19 and valve body 18 and there is the relation that is nested with, therefore valve block 16,
The appearance profile of clutch pedal mounting bracket 19 and valve body 18 is mutually matched.
As shown in Fig. 2 pedal-rod 17 is a multi-diameter shaft, the back segment of pedal-rod 17 is arranged on the ball-screw screw rod of sleeve-shaped
In 5, and a blind hole is provided with the rear end face of pedal-rod 17, the blind hole is engaged installation with the bulb of the front end of valve rod 2；Step on
The stage casing of plate stem 17 is arranged in clutch pedal mounting bracket 19, and has one section of axle journal, the axle journal and pedal in the rear side car of pedal-rod 17
L-type lockhole and locking plate 20 on the trapezoidal side plate of bearing 19 are engaged, and realization is stepped on to the locked of the stage casing of pedal-rod 17, and then realization
It is locked between board support 19 and pedal-rod 17；The leading portion of pedal-rod 17 is arranged in the round boss of valve body 18, the pedal-rod 17
Front end face and damping rubber block 23 rear end face between leave 2-3mm gap；The leading portion of the pedal-rod 17, stage casing and after
It is changeover portion between section.
As shown in Fig. 2 master cylinder push rod seat 22 is arranged on the round boss of the leading portion of valve body 18, the master cylinder push rod seat 22
Leading portion is shaft-like, and back segment is circular groove, and circular groove is engaged with the round boss of the leading portion of valve body 18, along the master cylinder push rod
The axial direction of 22 leading portion axles of seat is provided with M6 tapped blind hole, in mating connection with master cylinder push rod 24.In master cylinder push rod seat
22 outside is provided with master cylinder push rod return spring 27, and the master cylinder push rod return spring 27 is arranged on master cylinder by spring base 21
On the back segment of ram seat 22, spring base 21 is used to support master cylinder push rod return spring 27, to ensure its normally flexible work, master cylinder
The rear end of push rod return spring 27 is acted against in the anterior end surface of valve body 18, before the front end of master cylinder push rod return spring 27 is acted against
On the inner side end of housing 28.The back segment outer surface of master cylinder push rod 24 is machined with M6 external screw thread, with master cylinder push rod 22 leading portions of seat
Axle coaxial threaded is connected；The front end of master cylinder push rod 24 is the rear end face of the main cylinder piston-rod 25 in hemisphere planar, master cylinder 26
On be machined with a blind hole, the front end hemisphere face of master cylinder push rod 24 is in contact with the rear end blind hole bottom surface of main cylinder piston-rod 25, to lead
Cylinder push rod 24 can be to the transmission displacement input of master cylinder 26.
As shown in Fig. 2 being machined with a through hole on the front end face of procapsid 28, the through hole is used for the back segment with master cylinder 26
Coordinate and install, the front end face of procapsid 28 is connected with the rear end ring flange of master cylinder 26 by six outer-hexagonal bolts, with
Ensure that the position of master cylinder 26 is fixed；In the lower outside of the procapsid 28, be close to procapsid 28 bottom surface and
Side is machined with the motor groove of a major diameter, the size of the motor groove and the appearance and size phase of direct current generator 31
Match somebody with somebody, to ensure that direct current generator 31 can be placed in the groove, when total system works, the position of direct current generator 31 is fixed；Direct current
The motor flange disk 29 of motor 31 is connected with procapsid 28 by six hexagon socket head cap screws, to ensure the position of direct current generator 31
It is fixed.
As shown in figure 1, a floor is machined with below the rear side of the bottom of procapsid 28 and back casing 12, to ensure
The support strength of procapsid 28 and back casing 12.
Pacify as shown in figure 1, the leading portion of the motor output shaft 33 of direct current generator 31 is supported by the second angular contact ball bearing 32
On the side of procapsid 28, motor output shaft 33 stretches into back casing 12 through the junction of procapsid 28 and back casing 12
Interior, the effect of the second angular contact ball bearing 32 is to ensure that motor output shaft 33 can be rotated freely；In motor output shaft 33
A little gear 36 is provided with by flat key in section, little gear 36 is connected with the gear wheel 39 engagement, motor output shaft 33
Back segment outer surface is machined with external screw thread, and nut 37 is threadedly coupled with the back segment of motor output shaft 33, and then realizes to little gear 36
A second sleeve 34, second sleeve 34 1 are set with the axial limiting of rear end, the motor output shaft 33 of the front end of little gear 36
End is acted against on the front end face of little gear 36, and the other end of second sleeve 34 acts against the end face of the inner ring of the second angular contact ball bearing 32
On, and then realize the axial limiting to the front end of little gear 36.
The little gear 36 and the modulus and pressure angle all same of the gear wheel 39, little gear 36 and the rotation of gear wheel 39
To on the contrary, the number of teeth of little gear 36 is less than the number of teeth of gear wheel 39, and little gear 36 is parallel with the axis of gear wheel 39, with guarantor
Demonstrate,prove the normal engagement of two gears.
The operation principle and the course of work of brake-by-wire device of the present invention based on direct current generator power-assisted are as follows：
1. brakes course of normal operation：
When brakes normal work, there are two power transmission lines, first is：Position of the driver to brake pedal
Move input to be input in this brake apparatus via the u shaped connector 1 being connected with brake pedal, u shaped connector 1 promotes valve rod 2 to enter line position
Move, the compression valve rod return spring 4 of valve rod 2 simultaneously promotes pedal-rod 17 to carry out displacement, and pedal-rod 17 overcomes pedal-rod 17 to delay with rubber
Rush behind the gap between block 23, promote damping rubber block 23 to be moved, damping rubber block 23 promotes master cylinder push rod seat 22 to carry out
Displacement, master cylinder push rod seat 22 promotes main cylinder piston-rod 25 to carry out displacement, final realization pair by coupled master cylinder push rod 24
The driver pedal displacement input of master cylinder 26；Article 2 is：At the same time direct current generator 31 is started working, defeated by motor
Power is transferred in little gear 36 by shaft 33, and little gear 36 drives the gear wheel 39 engaged to be rotated, gear wheel 39
Ball-screw nut 6 is driven to be rotated, ball-screw nut 6 is acted on by the transmission of ball-screw ball 6, is rotated fortune
The dynamic straight-line displacement input for being converted to ball-screw screw rod 5, ball-screw screw rod 5 promotes valve block 16 sliding in procapsid 28
Move, valve block 16 promotes valve body 18 to carry out displacement, valve body 18 promotes return spring seat 21 to carry out displacement, and return spring seat 21 compresses
Master cylinder push rod return spring 27 simultaneously promotes master cylinder push rod seat 22 to carry out displacement, and master cylinder push rod seat 22 is pushed away by coupled master cylinder
Bar 24 promotes main cylinder piston-rod 25 to move, and realizes and follows displacement to input the motor power-assisted of master cylinder 26.
By above-mentioned two power transmission lines, master cylinder 26 obtains driver pedal displacement input and motor power-assisted
Follow displacement to input, realize that the total displacement to master cylinder 26 is inputted, wherein motor power-assisted, which follows displacement to input main function, is
Driver pedal displacement is followed to input, to save driver in braking procedure due to stepping on body spent by brake pedal
Power, it is determined to the laborsaving degree of driver by the working condition of direct current generator 31.
2. brake hard process during brakes motor failure：
When brakes motor failure, direct current generator 31 is stopped, if now driver steps on brake pedal, this system
Dynamic device is operated in brake hard process status.Driver is to the displacement of brake pedal input via being connected with brake pedal
U shaped connector 1 is input in this brake apparatus, and u shaped connector 1 promotes valve rod 2 to carry out displacement, and the compression valve rod return spring 4 of valve rod 2 is simultaneously
Pedal-rod 17 is promoted to carry out at displacement, the stage casing axle journal of pedal-rod 17 due to the locking effect of locking plate 20, locking plate 20 is with pedal
Bar 17 carries out displacement, and locking plate 20 is due to being inserted in the L-type lockhole of clutch pedal mounting bracket 19, and locking plate 20 can promote clutch pedal mounting bracket 19 while entering
Line position is moved, and clutch pedal mounting bracket 19 enters line slip, the end face of clutch pedal mounting bracket 19 and the end of valve body 18 in valve body 18 along the translot of valve body 18
Master cylinder realizes all processes for building pressure completely during the distance between face can ensure brake hard, will not produce motion
Interference, pedal-rod 17 is overcome behind the gap between pedal-rod 17 and damping rubber block 23, promotes damping rubber block 23 to carry out displacement,
Damping rubber block 23 promotes master cylinder push rod seat 22 to carry out displacement, and master cylinder push rod seat 22 is promoted by coupled master cylinder push rod 24
Main cylinder piston-rod 25 carries out displacement, realizes that the driver pedal displacement to master cylinder 26 is inputted.During brake hard, system
Whole displacements input of dynamic master cylinder 26 is stepped on brake pedal by driver and realized, to ensure travel safety.
Claims (7)
1. a kind of brake-by-wire device based on direct current generator power-assisted, it is characterised in that：
By valve rod assembly, housing, ball screw assembly, valve block (16), pedal-rod (17), valve body (18), clutch pedal mounting bracket (19), lock
Piece (20), braking cylinder component, direct current generator (31), little gear (36) and gear wheel (39) composition；
The ball screw assembly, of roller screw screw rod (5) and ball-screw nut (6) composition is arranged in housing by bearing
Side rear, the valve block (16), which slides axially, to be connected in the housing of ball screw assembly, front end, valve body (18) and pedal branch
Seat (19) is installed in valve block (16) anterior end surface, and clutch pedal mounting bracket (19) slides axially and is connected in valve body (18)；
The pedal-rod (17) vertically from it is rear to preceding sequentially pass through roller screw screw rod (5), valve block (16), clutch pedal mounting bracket (19) with
And valve body (18), and pedal-rod (17) pass through clutch pedal mounting bracket (19) after, locking plate (20) is radially by pedal-rod (17) and pedal branch
Seat (19) clamping locking is together；
The axially connecting rear end in the pedal-rod (17) of the valve rod assembly, the braking cylinder component is axially connecting in institute
The front end of pedal-rod (17) is stated, displacement of the driver to brake pedal is inputted successively through valve rod assembly, pedal-rod (17), checking cylinder
Component, is finally-transmitted to master cylinder (26)；
The direct current generator (31) is arranged on below hull outside, and motor output shaft (33) pierces into case inside, the little gear
(36) it is arranged on motor output shaft (33), the gear wheel (39) is arranged on the outside of ball-screw nut (6), and gear wheel
(39) engaged with little gear (36), the rotary motion of motor output shaft (33) is transmitted successively through little gear (36), gear wheel (39)
To ball-screw nut (6), the motion of ball-screw nut (6) rotation driving roller screw screw rod (5) tandem.
2. a kind of brake-by-wire device based on direct current generator power-assisted as claimed in claim 1, it is characterised in that：
The valve rod assembly is made up of u shaped connector (1), valve rod (2), rubber sleeve (3) and valve rod return spring (4), valve rod (2)
Front end is connected with pedal-rod (17) rear end sphere-contact, and rear end and the u shaped connector (1) of valve rod (2) are connected, valve rod return spring
(4) front end outer side of valve rod (2) is sleeved on, rubber sleeve (3) is coated on the outside of valve rod return spring (4).
3. a kind of brake-by-wire device based on direct current generator power-assisted as claimed in claim 1, it is characterised in that：
The braking cylinder component is by master cylinder push rod seat (22), master cylinder push rod (24), damping rubber block (23), main cylinder piston-rod
(25), master cylinder (26) and master cylinder push rod return spring (27) composition, master cylinder push rod seat (22) are arranged on valve body (18) front end,
Damping rubber block (23) is arranged between master cylinder push rod seat (22) bottom and pedal-rod (17), and master cylinder push rod (24) one end is vertically
Master cylinder push rod seat (22) front end is connected in, the blind via bottom of master cylinder push rod (24) other end and main cylinder piston-rod (25) rear end face connects
Connection is touched, master cylinder push rod return spring (27) is sleeved on the outside of master cylinder push rod seat (22), master cylinder push rod return spring (27) one end
On the front end face for acting against valve body (18), the other end is acted against on housing inner face, and the master cylinder (26) passes through ring flange
It is fixed on the outside of housing forward end.
4. a kind of brake-by-wire device based on direct current generator power-assisted as claimed in claim 1, it is characterised in that：
The housing is made up of back casing (12) and procapsid (28), and position is passed through between the back casing (12) and procapsid (28)
Achieved a butt joint positioning in two alignment pins (35) of diagonal position, and be bolted part and be assembled together, to ensure two shells
Relative position keeps constant to body at work；
Parallel along the longitudinal direction and be symmetrically provided with two translots on the inner surface of procapsid (28), valve block (16), which is slided, to be connected
It is connected in the translot.
5. a kind of brake-by-wire device based on direct current generator power-assisted as claimed in claim 1, it is characterised in that：
A through hole is provided with the center of valve block (16), the valve block (16) is arranged on the front side of ball-screw screw rod (5),
Valve block (16) is coordinated by the through hole at its center with the boss of ball-screw screw rod (5) front end to be installed；
Through hole both sides at valve block (16) center, symmetrically offer two trapezoidal elongated holes, two of the clutch pedal mounting bracket (19)
Side plate is vertically inserted in the trapezoidal elongated hole of correspondence；
Two arc short-bore, the two of the valve body (18) are further opened with the outside of two trapezoidal elongated holes of the valve block (16)
Individual arc otic placode is vertically mounted in correspondence arc short-bore；
End positions in valve block (16), are arranged with two rectangular shaped sliders, and the rectangular shaped slider is slidably connected at procapsid
(28) in the translot opened up in, valve block (16) is made to be slid back and forth in procapsid (28) along translot.
6. a kind of brake-by-wire device based on direct current generator power-assisted as claimed in claim 5, it is characterised in that：
A centre bore is provided with the center of the clutch pedal mounting bracket (19), in the left and right sides of clutch pedal mounting bracket (19) end face, and is hung down
Directly in clutch pedal mounting bracket (19) end face, two trapezoidal side plates, the trapezoidal elongated hole of the trapezoidal side plate and valve block (16) are arranged with
Coordinate and install；
On each trapezoidal side plate, two L-type lockholes, the back-to-back setting symmetrical above and below of L-type lockhole, institute are symmetrically provided with
State L-shaped lockhole to be engaged with locking plate (20), after pedal-rod (17) is installed in the centre bore of clutch pedal mounting bracket (19), by locking plate (20)
Assign in L-type institute hole, pedal-rod (17) is radially locked in clutch pedal mounting bracket (19)；
Two rectangular shaped sliders are also arranged with the upper and lower side of clutch pedal mounting bracket (19), the rectangular shaped slider is slidably connected at valve body
(18) in the translot opened up in, clutch pedal mounting bracket (19) is made to be slid back and forth in valve body (18) along translot.
7. a kind of brake-by-wire device based on direct current generator power-assisted as described in claim 5 or 6, it is characterised in that：
A round boss is provided with the front end of valve body (18), interstitial hole is provided with the center of round boss, the round boss is used
It is connected in the master cylinder push rod seat (22) with front side, the interstitial hole is used to install pedal-rod (17)；The valve body (18)
Rear end is vertically fixedly mounted on valve block (16) provided with two symmetrical arc otic placodes, two arc otic placodes of the valve body (18)
Two arc short-bore in；
Parallel along the longitudinal direction and be symmetrically provided with two translots on the inner surface of valve body (18), clutch pedal mounting bracket (19), which is slided, to be connected
It is connected in the translot.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710494798.3A CN107128295B (en) | 2017-06-26 | 2017-06-26 | A kind of brake-by-wire device based on direct current generator power-assisted |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710494798.3A CN107128295B (en) | 2017-06-26 | 2017-06-26 | A kind of brake-by-wire device based on direct current generator power-assisted |
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| CN107128295B CN107128295B (en) | 2018-09-28 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107757587A (en) * | 2017-10-10 | 2018-03-06 | 浙江力邦合信智能制动系统股份有限公司 | A kind of brake booster with backstop function |
| CN108105355A (en) * | 2017-12-20 | 2018-06-01 | 长安大学 | It is a kind of being capable of the ball-screw actuator that stretches of two level |
| CN108189824A (en) * | 2018-02-08 | 2018-06-22 | 吉林大学 | A kind of mixing line control brake system of front-wheel EHB trailing wheels EMB |
| CN107128295B (en) * | 2017-06-26 | 2018-09-28 | 吉林大学 | A kind of brake-by-wire device based on direct current generator power-assisted |
| 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 |
| CN110686030A (en) * | 2019-10-19 | 2020-01-14 | 山东理工大学 | One-way two-stage boosting type electromechanical brake actuator based on linear motor |
| CN111301370A (en) * | 2019-12-13 | 2020-06-19 | 天津英创汇智汽车技术有限公司 | Electronic brake booster for automobile |
| CN111731255A (en) * | 2020-08-04 | 2020-10-02 | 吉林大学 | Motor power-assisted braking system with braking force calibration function and control method thereof |
| CN113071467A (en) * | 2021-05-12 | 2021-07-06 | 浙江大学台州研究院 | Decoupling type electric power-assisted brake device |
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| CN107128295B (en) * | 2017-06-26 | 2018-09-28 | 吉林大学 | A kind of brake-by-wire device based on direct current generator power-assisted |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107128295B (en) * | 2017-06-26 | 2018-09-28 | 吉林大学 | A kind of brake-by-wire device based on direct current generator power-assisted |
| CN107757587A (en) * | 2017-10-10 | 2018-03-06 | 浙江力邦合信智能制动系统股份有限公司 | A kind of brake booster with backstop function |
| CN108105355A (en) * | 2017-12-20 | 2018-06-01 | 长安大学 | It is a kind of being capable of the ball-screw actuator that stretches of two level |
| CN108189824A (en) * | 2018-02-08 | 2018-06-22 | 吉林大学 | A kind of mixing line control brake system of front-wheel EHB trailing wheels EMB |
| 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 |
| CN110686030A (en) * | 2019-10-19 | 2020-01-14 | 山东理工大学 | One-way two-stage boosting type electromechanical brake actuator based on linear motor |
| CN111301370A (en) * | 2019-12-13 | 2020-06-19 | 天津英创汇智汽车技术有限公司 | Electronic brake booster for automobile |
| CN111731255A (en) * | 2020-08-04 | 2020-10-02 | 吉林大学 | Motor power-assisted braking system with braking force calibration function and control method thereof |
| CN113071467A (en) * | 2021-05-12 | 2021-07-06 | 浙江大学台州研究院 | Decoupling type electric power-assisted brake device |
| WO2022237179A1 (en) * | 2021-05-12 | 2022-11-17 | 浙江大学台州研究院 | Decoupling type electric power-assisted brake device |
| CN113071467B (en) * | 2021-05-12 | 2024-04-12 | 浙江大学台州研究院 | Decoupling type electric power-assisted braking device |
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