KR20180065261A - Brake system - Google Patents

Brake system Download PDF

Info

Publication number
KR20180065261A
KR20180065261A KR1020160165847A KR20160165847A KR20180065261A KR 20180065261 A KR20180065261 A KR 20180065261A KR 1020160165847 A KR1020160165847 A KR 1020160165847A KR 20160165847 A KR20160165847 A KR 20160165847A KR 20180065261 A KR20180065261 A KR 20180065261A
Authority
KR
South Korea
Prior art keywords
foreign matter
motor housing
modulator block
motor
bearing
Prior art date
Application number
KR1020160165847A
Other languages
Korean (ko)
Other versions
KR101871975B1 (en
Inventor
이주성
Original Assignee
주식회사 만도
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 주식회사 만도 filed Critical 주식회사 만도
Priority to KR1020160165847A priority Critical patent/KR101871975B1/en
Publication of KR20180065261A publication Critical patent/KR20180065261A/en
Application granted granted Critical
Publication of KR101871975B1 publication Critical patent/KR101871975B1/en

Links

Images

Classifications

    • 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
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/3675—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units
    • B60T8/368—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units combined with other mechanical components, e.g. pump units, master cylinders
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/45—Brakes

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

Disclosed is a brake system. The brake system according to an embodiment of the present invention comprises: a modulator block having a pair of pumps built therein; and a motor which is coupled to the modulator block and is equipped with a needle bearing at a tip of a rotary shaft, which is composed of an eccentric unit, to drive the pair of pumps. The motor includes: a motor housing having an open side; and a shaft hole covering the open portion of the motor housing and passing through the rotary shaft. The outer surface of the rotary shaft is provided with a spiral foreign matter discharge groove for preventing foreign matter remaining on the modulator block from flowing into the motor housing through the shaft hole.

Description

Brake system {BRAKE SYSTEM}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake system, and more particularly, to a brake system capable of preventing foreign matter from entering a motor housing from a modulator block.

Generally, a vehicle is equipped with a hydraulic brake for braking front and rear wheels, a booster for forming and transmitting a braking hydraulic pressure to the hydraulic brakes, a master cylinder and the like, and a braking hydraulic pressure is formed when the driver depresses the brake pedal. And the braking force is generated.

However, if the braking pressure is greater than the road surface state while the driver depresses the brake pedal to control the braking force increase / maintenance state, or if the friction force at the hydraulic brake is larger than the braking force generated at the tire or the road surface, the slip phenomenon Lt; / RTI >

An anti-lock brake system for effectively preventing such slip phenomenon and obtaining a strong and stable braking force is provided with a plurality of solenoid valves, an accumulator and a pump for controlling braking hydraulic pressure transmitted to the hydraulic brake side.

That is, the vehicle anti-lock brake system includes a modulator block having a plurality of solenoid valves and an accumulator and a pair of pumps, an ECU mounted to cover one side of the modulator block and controlling an electrically operated component, And a motor coupled to the other side to simultaneously drive a pair of pumps.

Here, the motor housing is coupled to one side of the modulator block so that the rotary shaft is inserted into the modulator block, and the eccentric bearing coupled to the rotary shaft rotates to reciprocate the piston of the pump, thereby controlling the flow of hydraulic pressure.

On the other hand, foreign substances (oil, dust, etc.) remaining in the modulator block are introduced into the motor housing through the portion through which the rotating shaft passes due to the vibration due to the rotation of the motor and the pressure difference due to the temperature change, There arises a problem that induction failure is caused in the electric driving portion arranged inside.

Korean Patent Publication No. 2006-0014467 (published on February 16, 2006)

Embodiments of the present invention provide a brake system that prevents foreign matter remaining in the modulator block from entering the interior of the motor housing.

According to an aspect of the present invention, there is provided a brake system including a modulator block including a pair of pumps, a motor coupled to the modulator block and having a needle bearing mounted at an end of a rotary shaft, Wherein the motor includes a motor housing having an open side and a mold cover covering an open side of the motor housing and having a shaft hole through which the rotating shaft passes, A brake system may be provided in which a spiral-shaped foreign matter discharge groove is provided to prevent the motor housing from being introduced into the motor housing through the shaft hole.

In addition, the mold cover may be provided with a foreign-body receiving portion for storing a foreign substance moved upward by the foreign-matter discharge groove.

In addition, the mold cover may be provided at the center thereof with a bearing seating portion having a concave depression for receiving the ball bearing for supporting the rotation shaft, and the foreign body accommodating portion may be provided at a lower position than the bearing seating portion.

And a commutator coupled to the outer surface of the rotating shaft in the motor housing, wherein the foreign matter discharge groove is formed in the outer surface of the rotating shaft located between the ball bearing and the commutator in order to prevent foreign matter from falling down through the shaft hole. As shown in FIG.

Embodiments of the present invention can prevent the foreign matter remaining in the modulator block from flowing into the motor housing, thereby reducing the occurrence of malfunction of the electric driving part disposed inside the motor housing.

FIG. 1 shows a coupling structure of a modulator block and a motor of a brake system according to an embodiment of the present invention.
FIG. 2 is a view showing a movement path of a foreign matter when the motor is rotated according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below are provided by way of example so that those skilled in the art will be able to fully understand the spirit of the present invention. The present invention is not limited to the embodiments described below, but may be embodied in other forms. In order to clearly explain the present invention, parts not related to the description are omitted from the drawings, and the width, length, thickness, etc. of the components may be exaggerated for convenience. Like reference numerals designate like elements throughout the specification.

FIG. 1 illustrates a coupling structure of a modulator block and a motor of a brake system according to an embodiment of the present invention, and FIG. 2 illustrates a movement path of foreign matter during rotation of the motor according to an embodiment of the present invention.

1 and 2, an anti-lock brake system for a vehicle according to an embodiment of the present invention includes a modulator block 10 having a plurality of solenoid valves, an accumulator and a pair of pumps 20a and 20b, An ECU for controlling the driving element, and a motor 50 coupled to the modulator block 10 to simultaneously drive a pair of pumps 20a and 20b.

The modulator block 10 is formed of a rectangular parallelepiped block made of an aluminum material. A plurality of NO-type and NC-type solenoid valves associated with the upstream and downstream sides of the hydraulic brakes are compactly arranged at one side of the modulator block 10 to control the braking hydraulic pressure transmitted to the hydraulic brake side. The opening and closing operation of the solenoid valve is controlled by the ECU which detects the vehicle speed through the wheel sensors mounted on the front and rear wheels, respectively.

The pair of pumps 20a and 20b have a predetermined phase difference by the motor 50 and are simultaneously driven to suck the oil stored in the low pressure accumulator and pressurize the oil to the high pressure accumulator side. For the construction of the pumps 20a and 20b, the pump mounting bores 11a and 11b are formed in the shape of a cylinder across the transverse direction in the modulator block 10, which is connected through a suction port and a discharge port to a low- It is linked to the high pressure accumulator.

The pump mounting bores 11a and 11b are provided with pistons 22a and 22b which are linearly reciprocatable in the left and right directions and which have inlet valves 21a and 21b at their front ends and return springs 22a and 22b for restoring the pistons 22a and 22b And outlet valves 24a and 24b that open and close the inlet valves 21a and 21b in accordance with the positions of the pistons 22a and 22b by closing the ends of the pump mounting bores 11a and 11b The valve housings 25a and 25b are provided.

The pistons 22a and 22b reciprocate within the pump mounting bores 11a and 11b by eccentric rotation of the tip eccentric portion 61 of the rotary shaft 60 O-rings 26a and 26b are provided for preventing oil leakage.

The inlet valves 21a and 21b are directly connected to the suction ports, and the outlet valves 24a and 24b are connected to the discharge ports to prevent back flow of the oil.

The motor 50 is a general DC motor, and is mounted on one side of the modulator block 10.

The motor 50 includes a motor housing 51 having an outer appearance and one side opened, a mold cover 70 covering the open side of the motor housing 51 and having seals 52 along the edges thereof, A stator 53 installed in the stator 51 and a rotor 54 which rotates while interacting with the stator 53 and into which the rotating shaft 60 is inserted in the axial direction.

The rotary shaft 60 extends outwardly through the shaft hole 71 drilled in the center of the mold cover 70. The end of the rotary shaft 60 extending to the modulator block 10 is constituted by an eccentric part 61 and the needle bearing 63 for simultaneously driving a pair of pistons 22a and 22b is provided in the eccentric part 61 .

Between the center of the mold cover 70 and the modulator block 10, a ball bearing 30 for supporting the rotary shaft 60 is provided.

The modulator block 10 is provided with a first bearing bore 13 for mounting the needle bearing 63 and a second bearing bore 14 for mounting the ball bearing 30 in a stepped manner.

Therefore, when the motor 50 is mounted on the side of the modulator block 10, the eccentric part 61 of the rotary shaft 60 provided with the needle bearing 63 is disposed in the first bearing bore 13, whereby a pair of pistons 22a And 22b can be driven simultaneously. On the second bearing bore 14, one side of the ball bearing 30 is seated, and the rotary shaft 60 is smoothly rotated.

When the rotary shaft 60 rotates by the driving of the motor 50, the pistons 22a and 22b of the pumps 20a and 20b in contact with the needle bearing 63 reciprocate, and by this operation, As the suction pressure of the oil rises, it is guided to the high-pressure accumulator and is transmitted again to the master cylinder or the NO-type solenoid valve side.

When the pumps 20a and 20b are driven by the rotation of the motor 50, grease generated in the low pressure portion of the pumps 20a and 20b and grease discharged from the bearings remain in the modulator block 10, The temperature difference between the inside of the motor housing 51 and the inside of the modulator block 10 is generated due to the heat generated when the motor 50 rotates.

The foreign matter remaining in the modulator block 10 due to the vibration caused by the rotation of the motor 50 and the heat due to the heat is transmitted to the ball bearing 30 or the bearing seats of the mold cover 70 on which the ball bearing 30 is seated (72) to the inside of the motor housing (51).

If a foreign matter introduced into the motor housing 51 flows into a gap between the commutator 55 and the brush 56 as an electric drive unit, a faulty energization may occur and the motor 50 may fail to operate.

In order to solve this problem, foreign matter introduced through the clearance between the ball bearing 30 or the ball bearing 30 and the bearing seating portion 72 is prevented from flowing into the motor housing 51 through the rotation shaft 60 of the embodiment of the present invention. A spiral-shaped foreign matter discharge groove 80 is provided.

The foreign matter discharge groove 80 serves to prevent the foreign matter from flowing into the motor housing 51 by moving the foreign matter introduced into the foreign matter discharge groove 80 as the rotating shaft 60 rotates.

The foreign matter discharge groove 80 is formed in the bearing seating portion 72 of the mold cover 70 to prevent foreign matter from flowing into the motor housing 51 through the shaft hole 71 formed at the center of the bearing seating portion 72 And may be located on the rotating shaft 60 between the ball bearing 30 and the commutator 55.

That is, the foreign matter discharge groove 80 may be formed on the outer surface of the rotary shaft 60 around the shaft hole 71 to prevent the foreign matter from falling down through the shaft hole 71 formed in the mold cover 70.

On one side of the mold cover 70, a foreign object receiving portion 90 for storing a foreign object carried by the foreign object discharge groove 80 is provided.

The foreign body accommodating portion 90 has a stepped portion with the bearing seat portion 72 so as to be positioned below the bottom of the bearing seat portion 72 formed in the mold cover 70.

A predetermined gap 73 is formed between the lower end of the ball bearing 30 and the bottom of the bearing seating portion 72 when the ball bearing 30 is seated in the bearing seating portion 72, The foreign object receiving portion 90 can communicate with the bearing seat portion 72. [

2, the foreign matter remaining in the modulator block 10 during rotation of the rotary shaft 60 passes through the space between the ball bearing 30 or the ball bearing 30 and the mold cover 70, Even if it flows into the shaft hole 71 of the rotary shaft 70, the rotary shaft 60 moves upward along the spiral-shaped foreign matter discharge groove 80 by the rotation of the rotary shaft 60.

The foreign matter transported upward along the foreign matter discharge groove 80 is transported to and stored in the foreign matter receiving portion 90 through a gap 73 connected to the foreign matter receiving portion 90 (solid line arrow).

Therefore, foreign matter remaining in the modulator block 10 can be delayed or prevented from flowing into the motor housing 51 due to rotation of the rotary shaft 60, so that malfunction of the motor 50 can be remarkably reduced.

The foregoing has shown and described specific embodiments. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the appended claims.

10: modulator block, 20a, b: pump,
30: Ball bearing, 50: Motor,
51: motor housing, 55: commutator,
56: brush, 60: rotating shaft,
70: mold cover, 71:
72: bearing seating part, 80: foreign matter discharge groove,
90: foreign body receiving part.

Claims (4)

A brake system including a modulator block having a pair of pumps and a motor for driving the pair of pumps, the needle bearing being provided at a tip of a rotary shaft, which is coupled to the modulator block and is an eccentric portion,
Wherein the motor includes a motor housing having an open side and a mold cover covering an open side of the motor housing and having a shaft hole through which the rotation shaft passes,
And a spiral foreign matter discharge groove is formed on an outer surface of the rotary shaft to prevent foreign matter remaining in the modulator block from flowing into the motor housing through the shaft hole. The method according to claim 1,
Wherein the mold cover is provided with a foreign body accommodating portion for storing a foreign substance moved upward by the foreign object discharge groove. 3. The method of claim 2,
Wherein the mold cover has a bearing hole formed at a center thereof and having a recessed recess for receiving a ball bearing supporting the rotation shaft,
Wherein the foreign body accommodating portion is provided at a lower position than the bearing seating portion. The method of claim 3,
Further comprising a commutator coupled to the outer surface of the rotating shaft within the motor housing,
Wherein the foreign matter discharge groove is provided on an outer surface of the rotating shaft located between the ball bearing and the commutator so as to prevent foreign matter from falling down through the shaft hole.
KR1020160165847A 2016-12-07 2016-12-07 Brake system KR101871975B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160165847A KR101871975B1 (en) 2016-12-07 2016-12-07 Brake system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160165847A KR101871975B1 (en) 2016-12-07 2016-12-07 Brake system

Publications (2)

Publication Number Publication Date
KR20180065261A true KR20180065261A (en) 2018-06-18
KR101871975B1 KR101871975B1 (en) 2018-06-27

Family

ID=62767822

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020160165847A KR101871975B1 (en) 2016-12-07 2016-12-07 Brake system

Country Status (1)

Country Link
KR (1) KR101871975B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020012426A1 (en) * 2018-07-13 2020-01-16 ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング Brake fluid pressure control device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050082014A (en) * 2004-02-17 2005-08-22 주식회사 만도 Modulator block for brake system
KR20060014467A (en) 2004-08-11 2006-02-16 주식회사 만도 Sealing device of a motor for brake system
KR20070062741A (en) * 2005-12-13 2007-06-18 주식회사 만도 Electronic control brake system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050082014A (en) * 2004-02-17 2005-08-22 주식회사 만도 Modulator block for brake system
KR20060014467A (en) 2004-08-11 2006-02-16 주식회사 만도 Sealing device of a motor for brake system
KR20070062741A (en) * 2005-12-13 2007-06-18 주식회사 만도 Electronic control brake system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020012426A1 (en) * 2018-07-13 2020-01-16 ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング Brake fluid pressure control device
US11801815B2 (en) 2018-07-13 2023-10-31 Robert Bosch Gmbh Brake hydraulic pressure controller

Also Published As

Publication number Publication date
KR101871975B1 (en) 2018-06-27

Similar Documents

Publication Publication Date Title
JP6721207B2 (en) Brake device, brake system and master cylinder
JP4944685B2 (en) Brake hydraulic pressure control device for bar handle vehicle
JP5282126B2 (en) Motor pump equipment
KR101871975B1 (en) Brake system
JP6237484B2 (en) Hydraulic unit for vehicle brake system
WO2018070187A1 (en) Pump device and brake apparatus
JP2012245855A (en) Brake fluid pressure control device and brake device using the same
KR100981110B1 (en) Electronic Control Brake System
JP5961904B2 (en) Brake hydraulic pressure control device for vehicle and manufacturing method thereof
JPH1047256A (en) Pump liquid pressure damper structure in antiskid control device
KR20220159552A (en) Pump Housing Layout for Brake System
JP7112283B2 (en) brake controller
KR100655462B1 (en) A bearing stopper of electronic control brake system
KR102560998B1 (en) Break oil pressure control device for break system
US20140178236A1 (en) Rotary pump and brake device having the same
KR100907867B1 (en) Motor sealing device of brake system
KR100550949B1 (en) pump for brake apparatus
KR20070063829A (en) Motor seal device of electronic control brake system
KR101130287B1 (en) Oil flow preventing device of motor
JP2000278905A (en) Fixing structure of motor for pump operation of antilock brake device for vehicle
KR100515982B1 (en) Modulator block for brake system
KR100349535B1 (en) A modulator block of ABS
KR100219195B1 (en) Pump for a brake system
KR102563774B1 (en) Break oil pressure control device for break system
KR20110125289A (en) Hydraulic pump for electronic control brake system

Legal Events

Date Code Title Description
GRNT Written decision to grant