CN209719561U - Electronic hydraulic brake system driving mechanism - Google Patents
Electronic hydraulic brake system driving mechanism Download PDFInfo
- Publication number
- CN209719561U CN209719561U CN201822228618.XU CN201822228618U CN209719561U CN 209719561 U CN209719561 U CN 209719561U CN 201822228618 U CN201822228618 U CN 201822228618U CN 209719561 U CN209719561 U CN 209719561U
- Authority
- CN
- China
- Prior art keywords
- transmission mechanism
- brake system
- electronic hydraulic
- hydraulic brake
- system driving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of electronic hydraulic brake system driving mechanisms, it include: in the brake piston insertion detent housing of master cylinder, first transmission mechanism, the second transmission mechanism, third transmission mechanism and wear ring are arranged in detent housing, external torque is sent to third transmission mechanism by the second transmission mechanism by the first transmission mechanism, third transmission mechanism pushes brake fluid in brake piston compression master cylinder, wear ring is arranged between the second transmission mechanism and detent housing, and wear ring can reduce frictional force between the second transmission mechanism and detent housing.The utility model can be reduced lateral force suffered by master cylinder piston, be adjustable master cylinder idle stroke, improve the reliability of master cylinder work.
Description
Technical field
The utility model relates to automotive fields, more particularly to a kind of electro-hydraulic brake system that brake system of car uses
System driving mechanism.
Background technique
Braking system is the vital system in relation to vehicle safety performance, and the height of performance will directly affect vehicle
Driving safety performance.Traditional braking system, usually by brake pedal, vacuum booster, master cylinder, ESC/ABS, braking
Wheel cylinder and its corresponding pipeline are formed.Whole system is more complicated, and in bad in volume, quality and integrated level
Gesture.Also, the vacuum degree of vacuum booster derives from automobile engine, with gradually popularizing for electric vehicle, vacuum source at
Problem, majority vehicles take addition of vacuum pump to provide vacuum degree at present.However, this program is an interim solution party
Case.Increased vacuum pump not only occupies limited vehicle fore cabin space, while also increasing the quality and failure of braking system
Risk.This runs in the opposite direction for vehicle and lightweight and safety.Therefore, response is fast, powerful electro-hydraulic system
Dynamic system just more and more attention has been paid to.
Electronic hydraulic brake system usually has braking motor, master cylinder, pressure of wheel braking cylinder control valve, pedal simulator, mistake
Effect standby system and its associated pipe are formed.Electronic type electronic hydraulic brake system structure is simple, and each wheel cylinder may be implemented
Brake pressure accurately control, in addition to be able to achieve Conventional braking systems braking anti-lock control, Anti-slip regulation control, electronics system
Power distribution controls, outside the functions such as electronic stability control, moreover it is possible to pass through software realization emergency brake assistance, brake pitching control
System, brake disc moisture film are removed, a series of functions such as uphill starting auxiliary.More importantly due to system be decoupled system,
The system can be with regenerative braking force perfect combination, and with the help of pedal simulator, realization does not change original brake feel and is
The Brake energy recovery of premise maximizes.Therefore the use and popularization of electronic type electronic hydraulic brake system can promote vehicle in all directions
Safety, economy and lightweight either still all have a wide range of applications on new energy vehicle in conventional truck
Prospect.
Electronic hydraulic brake system, which is compared, rapidly, it is big to build pressure pressure with traditional vacuum booster, response.Also cause simultaneously
The work operating condition of the components such as its transmission mechanism, master cylinder is more severe.How system working efficiency is improved, and job stability reduces
Failure risk is the key that the design of brake structural driving mechanism.
Utility model content
The technical problem to be solved by the present invention is to provide one kind can be reduced lateral force suffered by master cylinder piston, is adjustable master
The electronic hydraulic brake system driving mechanism of cylinder idle stroke.
In order to solve the above technical problems, electronic hydraulic brake system driving mechanism provided by the utility model, comprising: braking
Master cylinder, detent housing, the first transmission mechanism, the second transmission mechanism, third transmission mechanism and wear ring；
In the brake piston insertion detent housing of the master cylinder, first transmission mechanism, the second transmission mechanism, the
Three transmission mechanisms and wear ring are arranged in detent housing, and external torque is passed through the second driver by first transmission mechanism
Structure is sent to third transmission mechanism, and the third transmission mechanism pushes brake fluid in brake piston compression master cylinder, described resistance to
Bull ring is arranged between the second transmission mechanism and detent housing, the wear ring can reduce the second transmission mechanism and detent housing it
Between frictional force.
It is further improved the electronic hydraulic brake system driving mechanism, first transmission mechanism is that setting is being braked
The gear of inner walls groove.
It is further improved the electronic hydraulic brake system driving mechanism, second transmission mechanism is rack gear.
Be further improved the electronic hydraulic brake system driving mechanism, the third transmission mechanism include push rod cup,
Push rod and handspike bearing；
The one end of rack gear towards master cylinder is arranged in the handspike bearing, and the handspike bearing connects push rod by push rod
Head, the push rod cup push brake fluid in brake piston compression master cylinder.
The electronic hydraulic brake system driving mechanism, the handspike bearing and push rod is further improved to connect using flexural pivot
It connects.
It is further improved the electronic hydraulic brake system driving mechanism, is screw thread between the push rod and handspike bearing
Connection.It is adjustable distance between push rod and handspike bearing by adjusting screw thread, i.e. adjusting third transmission mechanism entire length.
It is further improved the electronic hydraulic brake system driving mechanism, the push rod cup and brake piston are Internal Spherical Surface
Contact, the brake piston are equipped with interior concave spherical surface, and the push rod cup is outer convex spherical.
It is further improved the electronic hydraulic brake system driving mechanism, the rack gear is equipped with wear-resisting annular groove, described
Wear ring is fixed in wear-resisting annular groove.
It is further improved the electronic hydraulic brake system driving mechanism, is slided between the wear ring and detent housing
Coefficient of friction is less than 0.3.Wear ring drop is manufactured using the material that on the one hand can choose the low-friction coefficient between detent housing
Low-frictional force also reduces on the other hand since wear ring rack gear opposite with detent housing and detent housing reduce contact area
Frictional force.
It is further improved the electronic hydraulic brake system driving mechanism, the wear ring is two.
It is further improved the electronic hydraulic brake system driving mechanism, it is described resistance to when two wear rings are set
Bull ring is separately positioned on second transmission mechanism both ends.
It is further improved the electronic hydraulic brake system driving mechanism, the wear ring is at least three, described resistance to
Bull ring is distributed evenly on second transmission mechanism.
It is further improved the electronic hydraulic brake system driving mechanism, the wear-resisting ring width is the 1/ of rack gear length
20~1/10.
Refering to what is shown in Fig. 1, Electro-hydraulic brake is actively built for pressure operating condition, illustrate this utility model works process.
When driver's foot steps on brake pedal braking, motor is started to work, and by deceleration, mechanism transfers a torque to gear
9, gear 9 pushes rack gear 8 to travel forward, and rack gear 8 is contacted by wear ring 10 with 3 inner wall of brake casing, and in arrester shell
Sliding in body 3.Rack gear 8 move forward push handspike bearing 7, push rod 8 (being connect with 7 flexural pivot of handspike bearing), push rod cup 5 (with push away
Bar 6 is threadedly coupled), wherein push rod cup 5 is contacted with 4 Internal Spherical Surface of master cylinder piston, and master cylinder piston 4 is made to compress braking in master cylinder 1
Liquid provides pressure source for vehicle braking.In gear engaged transmission, it is assemblied in the wear ring 10 of 8 outer ring of rack gear, can reduce and shell
The friction area of body, while wear ring skin-friction coefficient is low, to reduce the frictional force of rack gear sliding, improves tooling efficiency.
Refering to what is shown in Fig. 2, in addition to peripheral force, effect of the rack gear also by radial force Fr, to guarantee that sliding is smooth, with wear-resisting
There are gaps between the rack gear and shell of ring, and according to being fixedly connected, rack gear force in radial Fr will be transmitted by pusher portion
Master cylinder piston keeps the operating condition of master cylinder piston and master cylinder leather cup severe.The utility model device push rod adopts both ends and is designed with spherical surface
Structure realize flexural pivot connection, radial force Fr cannot be acted on via connecting rod to master cylinder piston, reduce side suffered by master cylinder piston
Xiang Li improves the reliability of master cylinder work to mitigate abrasion of the master cylinder piston to master cylinder leather cup.
The utility model can also adjust idle stroke when master cylinder work, be connected between push rod 6 and push rod cup 7 by screw thread
It connects, by rotating screw thread, can adjust third transmission mechanism entire length, so as to adjust the compression of master cylinder piston relative initial position
Amount realizes the adjusting of master cylinder work idle stroke, it is ensured that master cylinder can work normally.
Detailed description of the invention
The utility model is described in further detail with specific embodiment with reference to the accompanying drawing:
Fig. 1 is the utility model schematic structural diagram of the second embodiment.
Fig. 2 is the utility model stress analysis schematic diagram.
Fig. 3 is the utility model 3rd embodiment structural schematic diagram.
Description of symbols
1 master cylinder
2 master cylinder leather cups
3 brake casings
4 master cylinder pistons
5 push rod cups
6 push rods
7 handspike bearings
8 rack gears
9 gears
10 wear rings
Radial force Fr
Specific embodiment
Electronic hydraulic brake system driving mechanism first embodiment provided by the utility model, comprising: master cylinder, braking
Shell, the first transmission mechanism, the second transmission mechanism, third transmission mechanism and wear ring；
In the brake piston insertion detent housing of the master cylinder, first transmission mechanism, the second transmission mechanism, the
Three transmission mechanisms and wear ring are arranged in detent housing, and external torque is passed through the second driver by first transmission mechanism
Structure is sent to third transmission mechanism, and the third transmission mechanism pushes brake fluid in brake piston compression master cylinder, described resistance to
Bull ring is arranged between the second transmission mechanism and detent housing, the wear ring can reduce the second transmission mechanism and detent housing it
Between frictional force.
Wherein, first transmission mechanism is the gear being arranged at detent housing inboard wall groove, second driver
Structure is rack gear, and the third transmission mechanism includes push rod cup, push rod and handspike bearing；The handspike bearing is arranged in rack gear direction
One end of master cylinder, the handspike bearing connect push rod cup by push rod, and the push rod cup pushes brake piston compression braking
Brake fluid in master cylinder.
Refering to what is shown in Fig. 1, electronic hydraulic brake system driving mechanism second embodiment provided by the utility model, comprising:
Master cylinder, detent housing, the first transmission mechanism, the second transmission mechanism, third transmission mechanism and wear ring；
In the brake piston insertion detent housing of the master cylinder, first transmission mechanism, the second transmission mechanism, the
Three transmission mechanisms and wear ring are arranged in detent housing, and external torque is passed through the second driver by first transmission mechanism
Structure is sent to third transmission mechanism, and the third transmission mechanism pushes brake fluid in brake piston compression master cylinder, described resistance to
Bull ring is arranged between the second transmission mechanism and detent housing, the wear ring can reduce the second transmission mechanism and detent housing it
Between frictional force.First transmission mechanism is the gear being arranged at detent housing inboard wall groove, and second transmission mechanism is
Rack gear, the third transmission mechanism include push rod cup, push rod and handspike bearing；The handspike bearing setting is braked in rack gear direction
One end of master cylinder, the handspike bearing connect push rod cup by push rod, and the push rod cup pushes brake piston to compress master cylinder
Interior brake fluid.
Wherein, the handspike bearing is connect with push rod using flexural pivot, is to be threadedly coupled between the push rod and handspike bearing,
The push rod cup is contacted with brake piston for Internal Spherical Surface, and the brake piston is equipped with interior concave spherical surface, and the push rod cup is evagination ball
Face.The rack gear is equipped with wear-resisting annular groove, and the wear ring is fixed in wear-resisting annular groove.
In the second embodiment, the wear ring is two, and the wear ring is separately positioned on second transmission mechanism
Both ends.As long as the wear-resisting ring position can guarantee rack gear stress balance without particular/special requirement.
It is further improved the second embodiment, the coefficient of sliding friction is less than 0.3 between the wear ring and detent housing.
Refering to what is shown in Fig. 3, electronic hydraulic brake system driving mechanism 3rd embodiment provided by the utility model, comprising:
Master cylinder, detent housing, the first transmission mechanism, the second transmission mechanism, third transmission mechanism and wear ring；
In the brake piston insertion detent housing of the master cylinder, first transmission mechanism, the second transmission mechanism, the
Three transmission mechanisms and wear ring are arranged in detent housing, and external torque is passed through the second driver by first transmission mechanism
Structure is sent to third transmission mechanism, and the third transmission mechanism pushes brake fluid in brake piston compression master cylinder, described resistance to
Bull ring is arranged between the second transmission mechanism and detent housing, the wear ring can reduce the second transmission mechanism and detent housing it
Between frictional force.First transmission mechanism is the gear being arranged at detent housing inboard wall groove, and second transmission mechanism is
Rack gear, the third transmission mechanism include push rod cup, push rod and handspike bearing；The handspike bearing setting is braked in rack gear direction
One end of master cylinder, the handspike bearing connect push rod cup by push rod, and the push rod cup pushes brake piston to compress master cylinder
Interior brake fluid.
Wherein, the handspike bearing is connect with push rod using flexural pivot, is to be threadedly coupled between the push rod and handspike bearing,
The push rod cup is contacted with brake piston for Internal Spherical Surface, and the brake piston is equipped with interior concave spherical surface, and the push rod cup is evagination ball
Face.The rack gear is equipped with wear-resisting annular groove, and the wear ring is fixed in wear-resisting annular groove.It further include being arranged in the master cylinder
Damping fixing pieces are set with detent housing junction, the damping fixing pieces are the master cylinder skin wrists being sleeved on master cylinder.It is described
The coefficient of sliding friction is less than 0.3 between wear ring and detent housing.
In the 3rd embodiment, setting at least three wear rings, embodiment is illustrated for three.Setting three
When wear ring, the wear ring is distributed evenly on rack gear, but to evade tooth punching wheel.Refering to what is shown in Fig. 3, being exactly to evade tooth
Taking turns three wear rings cannot achieve mean allocation, but as long as keeping rack gear balance.Theoretically the width of wear ring is smaller more
It is good, be conducive to reduce frictional force.But consider mounting process and stability, the wear-resisting ring width be rack gear length 1/20~
1/10。
The utility model is described in detail above by specific embodiment and embodiment, but these are not structure
At limitations of the present invention.In the case where not departing from the utility model principle, those skilled in the art can also be made
Many modification and improvement, these also should be regarded as the protection scope of the utility model.
Claims (13)
1. a kind of electronic hydraulic brake system driving mechanism characterized by comprising master cylinder, detent housing, the first transmission
Mechanism, the second transmission mechanism, third transmission mechanism and wear ring；
In the brake piston insertion detent housing of the master cylinder, first transmission mechanism, the second transmission mechanism, third are passed
Motivation structure and wear ring are arranged in detent housing, and first transmission mechanism passes external torque by the second transmission mechanism
It send to third transmission mechanism, the third transmission mechanism pushes brake fluid in brake piston compression master cylinder, the wear ring
It is arranged between the second transmission mechanism and detent housing, the wear ring can reduce to rub between the second transmission mechanism and detent housing
Wipe power.
2. electronic hydraulic brake system driving mechanism as described in claim 1, it is characterised in that: first transmission mechanism is
Gear at detent housing inboard wall groove is set.
3. electronic hydraulic brake system driving mechanism as described in claim 1, it is characterised in that: second transmission mechanism is
Rack gear.
4. electronic hydraulic brake system driving mechanism as described in claim 1, it is characterised in that: the third transmission mechanism packet
Include push rod cup, push rod and handspike bearing；
The one end of rack gear towards master cylinder is arranged in the handspike bearing, and the handspike bearing connects push rod cup by push rod,
The push rod cup pushes brake fluid in brake piston compression master cylinder.
5. electronic hydraulic brake system driving mechanism as claimed in claim 4, it is characterised in that: the handspike bearing and push rod
It is connected using flexural pivot.
6. electronic hydraulic brake system driving mechanism as claimed in claim 4, it is characterised in that: the push rod and handspike bearing
Between be threadedly coupled.
7. electronic hydraulic brake system driving mechanism as claimed in claim 4, it is characterised in that: the push rod cup and braking are lived
Plug is that Internal Spherical Surface contacts, and the brake piston is equipped with interior concave spherical surface, and the push rod cup is outer convex spherical.
8. electronic hydraulic brake system driving mechanism as claimed in claim 3, it is characterised in that: the rack gear is equipped with wear-resisting
Annular groove, the wear ring are fixed in wear-resisting annular groove.
9. the electronic hydraulic brake system driving mechanism as described in claim 1-8 any one, it is characterised in that: described wear-resisting
The coefficient of sliding friction is less than 0.3 between ring and detent housing.
10. electronic hydraulic brake system driving mechanism as claimed in claim 9, it is characterised in that: the wear ring is two.
11. electronic hydraulic brake system driving mechanism as claimed in claim 10, it is characterised in that: setting two is described wear-resisting
When ring, the wear ring is separately positioned on second transmission mechanism both ends.
12. electronic hydraulic brake system driving mechanism as described in claim 1, it is characterised in that: the wear ring is at least
Three, the wear ring is distributed evenly on second transmission mechanism.
13. electronic hydraulic brake system driving mechanism as claimed in claim 11, it is characterised in that: the wear-resisting ring width is
The 1/20~1/10 of rack gear length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822228618.XU CN209719561U (en) | 2018-12-28 | 2018-12-28 | Electronic hydraulic brake system driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822228618.XU CN209719561U (en) | 2018-12-28 | 2018-12-28 | Electronic hydraulic brake system driving mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209719561U true CN209719561U (en) | 2019-12-03 |
Family
ID=68678208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822228618.XU Active CN209719561U (en) | 2018-12-28 | 2018-12-28 | Electronic hydraulic brake system driving mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209719561U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112721898A (en) * | 2021-02-05 | 2021-04-30 | 上海拿森汽车电子有限公司 | Electric power-assisted brake system capable of reducing eccentric wear of main cylinder |
-
2018
- 2018-12-28 CN CN201822228618.XU patent/CN209719561U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112721898A (en) * | 2021-02-05 | 2021-04-30 | 上海拿森汽车电子有限公司 | Electric power-assisted brake system capable of reducing eccentric wear of main cylinder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204567654U (en) | The electric liquid line control brake system of motor and hydraulic control unit cooperation control | |
| US7874626B2 (en) | Hydraulic modulator for brake device | |
| CN203078511U (en) | Automobile brake-by-wire system | |
| CN105922979A (en) | Novel full decoupling electronic hydraulic power-assisted brake system | |
| US20160185329A1 (en) | Electric brake device | |
| CN104118411A (en) | Method for operating brake system for vehicle and control device for brake system of vehicle | |
| CN204567648U (en) | A kind of decoupling type EHB | |
| CN104302941A (en) | Electro-hydraulic actuator for brake | |
| CN103010199A (en) | Brake-by-wire system of automobile | |
| CN109941257A (en) | A kind of device for realizing Automobile redundant braking using energy-stored spring | |
| US11518250B2 (en) | Electro-hydraulic braking system and braking method thereof | |
| CN106184153A (en) | A kind of brake fluid system | |
| CN105270378B (en) | Service brake force aid system | |
| CN209719561U (en) | Electronic hydraulic brake system driving mechanism | |
| US20130076114A1 (en) | Brake booster | |
| CN203974787U (en) | A kind of Novel pure electric vacuum booster electric brake pedal | |
| CN206770519U (en) | Worm and gear, brake and the steering eliminated with centre-to-centre spacing regulation and gap | |
| CN202508072U (en) | Pedal simulation device | |
| JP5185971B2 (en) | Brake pedal mechanism | |
| CN209875799U (en) | Electro-hydraulic hybrid brake caliper assembly applied to motor vehicle | |
| CN206406902U (en) | A kind of brake system of car | |
| CN207015330U (en) | It is a kind of to increase journey plunger type hydraulic brake master cylinder certainly | |
| CN112498314B (en) | Pedal simulator for decoupling electronic hydraulic brake | |
| CN205149844U (en) | Service brake helping hand system | |
| CN108473120B (en) | Automatic control brake system of vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |