KR101662321B1 - Hydraulic Electric Control Unit for Break system - Google Patents

Hydraulic Electric Control Unit for Break system Download PDF

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Publication number
KR101662321B1
KR101662321B1 KR1020100039507A KR20100039507A KR101662321B1 KR 101662321 B1 KR101662321 B1 KR 101662321B1 KR 1020100039507 A KR1020100039507 A KR 1020100039507A KR 20100039507 A KR20100039507 A KR 20100039507A KR 101662321 B1 KR101662321 B1 KR 101662321B1
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KR
South Korea
Prior art keywords
pump
bearing
shaft hole
pump circuit
stage
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KR1020100039507A
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Korean (ko)
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KR20110120025A (en
Inventor
안성기
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현대모비스 주식회사
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Priority to KR1020100039507A priority Critical patent/KR101662321B1/en
Publication of KR20110120025A publication Critical patent/KR20110120025A/en
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Publication of KR101662321B1 publication Critical patent/KR101662321B1/en

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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
    • 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
    • B60T8/40—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 comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4031—Pump units characterised by their construction or mounting

Abstract

A pump housing (2) constituting a hydraulic electric control unit (HECU) for integrally controlling the hydraulic flow of an electronically controlled braking device is constituted by a three-piece 1, 2, 3 short shaft bearing Three pairs of 1, 2, and 3 pumps (3, 3a, 3b) positioned at both sides of the respective 1, 2, 3 shorting segment bearings (3, 3a, 3b) 21, 31, 22, 32, 23, 33) are arranged in a structure in which they are opposed to each other by two pumps, thereby realizing a premium additional function that quickly responds to a pressure increase demand due to automatic emergency braking, It is also prevented that the durability is weakened by the pressure increase.

Description

Technical Field [0001] The present invention relates to a hydraulic control unit for a braking device,

The present invention relates to a hydraulic electronic control unit for a braking device, and more particularly to a hydraulic electronic control unit capable of implementing an automatic emergency braking function required when traveling in a city center by arranging the pumps stacked as much as possible in a multilayer plane formed by a pump housing will be.

In general, more secure braking can be implemented by applying ABS (Anti Lock Brake System), TCS (Traction Control System) or ESP (Electronic Stability Program) system to reduce slip due to braking pressure or road surface condition .

The electronically controlled braking device as described above controls the flow of hydraulic fluid in the hydraulic circuit between the master cylinder and the wheel cylinder by using a HECU (Hydraulic Electric Control Unit) that integrally controls the hydraulic flow, thereby preventing a slip that may occur in the braking process.

As the vehicle performance and functions are improved, the braking function requires various additional functions associated with the automatic emergency braking or regenerative braking system besides improving the safety of the vehicle. Therefore, HECU (Hydraulic Electric Control Unit) is inevitably required.

The HECU generally has one motor and two pumps for oil pumping and one eccentric bearing installed on the pump side. The HECU is integrated on the side of the pump housing where the oil passages are machined, thereby preventing the master cylinder and wheel And implements the function of controlling the hydraulic flow of the hydraulic circuit connected to the cylinder.

However, as described above, the HECU, which focuses on the slip control function for improving the vehicle stability, does not have satisfactory durability due to the additional function, in particular, the pressure increase required by the premium additional function such as automatic emergency braking according to driving in the city, The automatic emergency braking can not be implemented in the city center where the braking is frequent, which is a cause for lowering the commerciality.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a pump housing, By arranging at least two planes, the durability can be improved to satisfy the premium additional functions such as the relative emergency boosting and the automatic emergency braking requiring the durability, and various additional functions associated with the regenerative braking system can be realized And a hydraulic control unit for a braking device.

It is another object of the present invention to provide a hydraulic electronic control unit for a braking device capable of improving the pump discharge performance and improving workability and assembly productivity by arranging the pumps installed in layers to the multi- have.

According to an aspect of the present invention, there is provided a hydraulic control unit for a braking device, including a bushing having an eccentric bearing coupled to a motor shaft inserted in a bore hole and having a pump housing for discharging hydraulic pressure between a master cylinder and a wheel cylinder hydraulic circuit, In this case,

And three eccentric bearings sequentially arranged on the shaft hole so as to be spaced apart from the position closest to the motor, and a pair of two eccentric bearings positioned opposite to each other on each of the three eccentric bearings And three 1, 2, and 3-order pump circuits having one pump.

Wherein the eccentric bearings are composed of a two-piece seam bearing and a one-piece seam bearing which are sequentially moved away from the three-piece seam bearing having a position closest to the motor shaft, and the one-piece seam bearing, the two- The bearings have a phase difference with respect to each other in an eccentric state in the shaft hole.

One of the one-piece seam bearing, the two-piece seam bearing and the three-piece seam bearing has no phase difference in the shaft hole.

The three primary, secondary, and tertiary pump circuits are provided with a left side pump circuit that is opened to communicate with the shaft hole on the left side of the housing of the pump housing and has a pump, and a right side pump circuit that is pierced to communicate with the shaft hole on the right side of the housing of the pump housing And a right side pump circuit provided with a pump, respectively.

The pumps constituting the left side pump circuit and the right side pump circuit are located on the same horizontal line spaced apart from each other.

According to the present invention, since at least three pumps are arranged in connection with each other on at least two planes with respect to the solid surface of the pump housing, automatic urgent braking can be achieved by utilizing the easy boost according to the multiple pumps and the improved durability, And has the effect of implementing various premium additional functions associated with the system.

Since the plurality of pumps are disposed so as to overlap each other as much as possible with respect to the multi-layer plane of the pump housing, the effect of improving the workability and assembly productivity of the pump housing is also obtained.

Fig. 1 is a configuration diagram of a hydraulic control unit for a braking device according to the present invention, Figs. 2 (a) and 2 (b) Fig. 3 is a pump layout diagram of a pump housing according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which illustrate exemplary embodiments of the present invention. The present invention is not limited to these embodiments.

Fig. 1 shows a configuration diagram of a hydraulic control unit for a braking device according to the present invention.

As shown in the figure, a hydraulic electronic control unit (HECU), which is a hydraulic electronic control unit, includes a motor 1, a pump housing 2 having a flow path for oil inflow and discharge, And a plurality of valves provided on a flow path formed in the flow path.

The motorized flow path in the pump housing 2 is connected with a hydraulic circuit extending from the master cylinder to each wheel cylinder. The motor 1 is inserted into the shaft hole of the pump housing 2 at the center of the pump housing 2, And the valves are installed in the pump housing 2 at positions opposite to the motor 1 to open and close the hydraulic circuit.

A pump circuit having a pump for sucking oil in accordance with the driving of the motor 1 is mounted on the flow path processed in the pump housing 2. The pump circuit according to the present embodiment is mounted on the solid surface of the pump housing 2 At least two planar surfaces are connected to each other and at least two pumps are connected to each other.

The pump housing 2 has a square shape and is defined by the housing front surface 4 and the housing upper surface 5 and the housing left and right surfaces 6 and 7 respectively. The left and right sides are referred to as housing left and right sides 6 and 7, and the upper side is referred to as a housing upper surface 5, while the motor 1 is referred to as a mounting position.

In the present embodiment, the pumping circuit includes left and right side pump circuits 20, 30 on the housing left and right sides 6, 7 relative to the housing upper surface 5, respectively, And is connected to a shaft hole to be mounted.

2 (A) and 2 (B) show side views of the pump housing according to the present embodiment in the left and right directions (directions B and C).

The left side face pump circuit 20 processed on the left side face 6 of the housing is provided with a pump respectively provided with holes opened to communicate with a shaft hole for coupling the shaft of the motor 1 as shown in FIG. The right side pump circuit 30 formed on the side of the motor 1 also has a pump provided in a hole opened to communicate with a shaft hole for coupling the shaft of the motor 1, as shown in Fig. 2 (B).

Although the left side pump circuit 20 and the right side pump circuit 30 can be composed of two to six pumps, the present embodiment is a pump structure consisting of three pairs.

The first stage pump 21, the second stage pump 22 and the third stage pump 23 constituting the left side surface pump circuit 20 are spaced apart from each other so as not to communicate with each other, And communicates with a horizontal linear path having no inclination with respect to the shaft hole to which the motor 1 is coupled.

The first-stage pump 31, the second-stage pump 32 and the third-stage pump 33 constituting the right side pump circuit 30 are also adjacent to each other so as not to communicate with each other, And is communicated with a horizontal linear path having no inclination with respect to the shaft hole to which the motor 1 is coupled.

In this embodiment, the left side pump circuit 20 constituting the first, second and third pumps 21, 22 and 23 and the right side pump 22 constituting the first, second and third pumps 31, The circuit 30 has the same position in the pump housing 2.

Figs. 3 (A) to 3 (C) show pump arrangements in the oil passage of the pump housing according to the present embodiment.

As shown in the figure, the pump housing 2 is constituted by three pump circuits which are opposed to each other with respect to a shaft hole to which the motor 1 is coupled, and the three pump circuits are adjacent to each other along the axial direction of the shaft hole A secondary pump circuit, and a tertiary pump circuit arranged in series.

As shown in Fig. 3 (A), in the primary pump circuit, the first-stage pump 21 of the left side pump circuit 20 is connected to the one-piece seam bearing 3 located on the shaft hole, Stage pump 31 of the right side pump circuit 30 is connected.

At this time, the one-piece shim bearing 3 is located in a state of being deflected toward the first stage pump 21 of the left side surface pump circuit 20, though the axis b of the one shims is coincident with the axis a of the shaft hole .

As shown in Fig. 3 (B), the secondary pump circuit formed along the axial direction of the shaft hole at a position adjacent to the primary pump circuit has a pair of shaper seals 3a, Stage pump 22 of the pump circuit 20 is communicated and the second-stage pump 32 of the right side pump circuit 30 is communicated on the opposite side.

At this time, the two-piece shim bearing 3a is in an eccentric state (Ka, Offset) in which its axis b is offset from the axis a of the shaft hole, (A1-a2) and the second quadrant (a2-a3) rotated from 0 degrees to 180 degrees.

The two-piece shim bearing 3a has a position that does not deviate from 180 degrees (a3 position) at 0 (a1 position) in the shaft hole.

Here, the quadrant refers to a quadrant that is rotated counterclockwise from the left side pump circuit 20 toward the right side pump circuit 30 and returned to the left side pump circuit 20, The first quadrant is a1-a2, the second quadrant is a2-a3, the third quadrant is a3-a4, and the fourth quadrant is a4-a1.

The third pump circuit formed along the axial direction of the shaft hole at a position adjacent to the secondary pump circuit has a three-piece shim bearing 3b located on the shaft hole as shown in FIG. 3 (C) Stage pump 23 of the pump circuit 20 is communicated and the third-stage pump 33 of the right side pump circuit 30 is communicated on the opposite side.

At this time, the three-piece shim bearing 3b is in an eccentric (Ka, Offset) state in which its axis b is offset from the axis a of the shaft hole, (A1-a2) to the third quadrant (a3-a4) rotated from 0 to 270 degrees.

The three-piece shim bearing 3b has a position that does not deviate from 90 degrees to 270 degrees in the shaft hole.

Thus, in the primary pump circuit, the first stage pump 21 of the left side pump circuit 20 and the first stage pump 31 of the right side pump circuit 30 are connected to both sides of the one-piece shim bearing 3, In the secondary pump circuit, the two-stage pump 22 of the left side pump circuit 20 and the two-stage pump 32 of the right side pump circuit 30 are connected to both sides of the two-piece shim bearing 3a, The circuit has a structure in which the third stage pump 23 of the left side pump circuit 20 and the third stage pump 33 of the right side pump circuit 30 are connected to both sides of the three-piece shim bearing 3b.

In this embodiment, the three-piece seam bearing 3b has a position closest to the motor 1 side, and the two-piece seam bearing 3a to the one-piece seam bearing 3 And is arranged to be further away from the motor 1.

When the motor 1 is operated with the above structure, the one-piece seam bearing 3, the two-piece seam bearing 3a and the three-piece seam bearing 3b ) Are all rotated, and the primary pump circuit, secondary pump circuit and tertiary pump circuit associated therewith are simultaneously driven.

As in the present embodiment, there are three primary pump circuits, a secondary pump circuit and a tertiary pump circuit, each of which is paired and operated simultaneously through three eccentric bearings 3, 3a, The oil flow rate that can be discharged per unit time of the earth pump housing 2 can be increased.

Such an increase in the discharge flow rate per unit time can provide a premium additional function necessary for the electronically controlled braking device by speeding up the braking reaction and promptly responding to the pressure increase required in automatic emergency braking, which is frequently caused during the urban driving.


1: motor 2: pump housing
3: 1 short segment bearing 3a: 2 short segment bearing
3b: 3-segment shim bearing 4: housing front
5: housing upper surface 6: housing left side
7: housing right side 20: left side pump circuit
21, 31: first stage pump 22, 32: second stage pump
23, 33: Third stage pump 30: Right side pump circuit
Ka: Offset

Claims (5)

A hydraulic electronic control unit for a braking device having an eccentric bearing coupled to a motor shaft inserted into a shaft hole and having a pump housing for discharging hydraulic pressure between a master cylinder and a hydraulic cylinder between wheel cylinders,
And three eccentric bearings sequentially arranged on the shaft hole so as to be spaced apart from the position closest to the motor, and a pair of two eccentric bearings positioned opposite to each other on each of the three eccentric bearings Three primary, two or three primary pump circuits with one pump;
The three primary, secondary, and tertiary pump circuits include a first-stage pump having an axial center positioned horizontally at the same position as the first-stage pump, and a second-stage pump and a third- And a right side pump circuit having a first-stage pump and a second-stage pump and a third-stage pump, the right side pump circuit having a shaft center positioned horizontally at the same position while being opened to communicate with the shaft hole at the right side of the housing of the pump housing;
The first stage pump of the left side pump circuit and the first stage pump of the right side pump circuit form the primary pump circuit communicated with a horizontal linear path having no inclination with respect to the shaft hole side, Wherein the two-stage pump of the left side pump circuit and the two-stage pump of the right side pump circuit form the secondary pump circuit communicated by a horizontal linear path having no inclination with respect to the shaft hole, And the three-stage pump of the right side pump circuit form the third pump circuit communicated by a horizontal straight line path having no inclination with respect to the shaft hole side
And a hydraulic control unit for a braking device.
[2] The apparatus as set forth in claim 1, wherein the eccentric bearings are composed of a two-piece seam bearing and a one-piece seam bearing which sequentially depart from the three-piece seam bearing having a position closest to the motor shaft, Wherein the bearing and the three-piece shim bearing have a phase difference with respect to each other in an eccentric state in the shaft hole.
The hydraulic control unit for a braking device according to claim 2, wherein one of the one-piece shim bearing, the two-piece shim bearing and the three-piece shim bearing has no phase difference in the shaft hole.
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KR1020100039507A 2010-04-28 2010-04-28 Hydraulic Electric Control Unit for Break system KR101662321B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100039507A KR101662321B1 (en) 2010-04-28 2010-04-28 Hydraulic Electric Control Unit for Break system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100039507A KR101662321B1 (en) 2010-04-28 2010-04-28 Hydraulic Electric Control Unit for Break system

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KR20110120025A KR20110120025A (en) 2011-11-03
KR101662321B1 true KR101662321B1 (en) 2016-10-05

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020097299A (en) 2018-12-18 2020-06-25 ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ Brake fluid pressure control device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100249878B1 (en) * 1996-12-16 2000-04-01 도오다 고오이찌로 Pump device
JP2006520437A (en) * 2003-11-18 2006-09-07 ローベルト　ボツシユ　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング Multi piston pump
WO2009053266A1 (en) * 2007-10-19 2009-04-30 Continental Teves Ag & Co. Ohg Hydraulic unit for slip-controlled braking systems

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007033244A1 (en) * 2007-07-17 2009-01-22 Lucas Automotive Gmbh Piston pump and operating method for this

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100249878B1 (en) * 1996-12-16 2000-04-01 도오다 고오이찌로 Pump device
JP2006520437A (en) * 2003-11-18 2006-09-07 ローベルト　ボツシユ　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング Multi piston pump
WO2009053266A1 (en) * 2007-10-19 2009-04-30 Continental Teves Ag & Co. Ohg Hydraulic unit for slip-controlled braking systems

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