KR20160053631A - An electronic disk brake - Google Patents

An electronic disk brake Download PDF

Info

Publication number
KR20160053631A
KR20160053631A KR1020140152943A KR20140152943A KR20160053631A KR 20160053631 A KR20160053631 A KR 20160053631A KR 1020140152943 A KR1020140152943 A KR 1020140152943A KR 20140152943 A KR20140152943 A KR 20140152943A KR 20160053631 A KR20160053631 A KR 20160053631A
Authority
KR
South Korea
Prior art keywords
spindle
piston
nut
disk
carrier
Prior art date
Application number
KR1020140152943A
Other languages
Korean (ko)
Inventor
이성제
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 KR1020140152943A priority Critical patent/KR20160053631A/en
Publication of KR20160053631A publication Critical patent/KR20160053631A/en

Links

Images

Classifications

    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
    • F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/24—Electric or magnetic using motors
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
    • F16D2125/40—Screw-and-nut

Abstract

The present invention relates to an electronic disk brake and, more specifically, to an electronic disk brake in which a nut spindle includes a vibration preventing spring to prevent vibration caused by the nut spindle vibrating and hitting the inner wall in case a piston and the nut spindle is apart from each other when the piston goes forward due to hydraulic pressure during service braking on the disk brake. The present invention comprises: a disk; a carrier including a pair of pad plates for pressing the two ends of the disk; a caliper housing installed on a side surface of the carrier; a piston, included in the caliper housing, for pressing the pad plates during a back-and-forth motion on one side of the carrier; a spindle shaft rotating by the force of a motor, installed inside the piston; and a spindle unit, combined with the spindle shaft by screws, including the nut spindle moving back and forth in the rotational direction of the spindle shaft. Additionally, an elastic unit for enabling the nut spindle to maintain the distance with the inner wall of the piston, can be included between the nut spindle and the piston.

Description

AN ELECTRONIC DISK BRAKE

More particularly, the present invention relates to an electronic disk brake, and more particularly, to a disk brake which is configured such that when the piston is advanced by hydraulic pressure during service braking to separate the piston and the nut spindle, the nut spindle vibrates and collides with the inner wall of the spindle And an anti-vibration spring on the nut spindle to prevent vibration.

The brake is a braking device used for decelerating or stopping the speed of a running vehicle. In recent years, an electronic parking brake (EPB) system for electronically controlling the driving of a parking brake has been used, and is mounted on a normal disk brake to perform a parking brake function. In addition, the vehicle is equipped with ABS (Anti-lock Brake System) or ESC (Electronic Stability Control), which is an auxiliary safety device to prevent slipping of the vehicle by controlling the fluid pressure during braking, and is used together with the electronic parking brake system.

1 is a view showing a schematic configuration of an electronic disc brake according to the prior art.

1, an electronic disk brake according to the related art includes a disk 1 rotated together with wheels of a vehicle, a pair of pad plates (not shown) provided on both sides of the disk 1 and pressing the disk 1 And a piston (32) slidably mounted on the carrier (20) and provided with a piston (32) movably installed for pressing the pair of pad plates (11, 12) And a spindle unit 50 that converts the rotational force of the motor 40 into a linear motion and transfers the rotational motion to the piston 32. The housing 30 includes a housing 30, a motor 40 for generating a driving force,

The pair of pad plates 11 and 12 may be divided into an inner pad plate 12 adjacent to the piston 32 and an outer pad plate 11 disposed opposite thereto.

A cylinder 33 is provided at one side of the caliper housing 30 and a piston 32 for urging the inner pad plate 12 toward the disk 1 is provided in the cylinder 33. The fingers 31 bent downward are integrally connected to the cylinder 33 at the other side of the caliper housing 30 so that the outer pad plate 11 is pressed against the disk 1 together with the sliding movement of the caliper housing 30. [ It is possible to do.

The carrier 20 is fixed to the vehicle body and guides the pad plates 11 and 12 to move back and forth toward the disc 1 while preventing the pair of pad plates 11 and 12 from being separated.

When the spindle 51 is rotated by the driving of the motor 40 during the braking operation, the piston 32 is rotated forward and backward by the hydraulic pressure at the time of service braking, (52) reciprocates on the spindle (51) and presses the inner pad plate (12) toward the disk (1).

When the piston 32 is advanced by hydraulic pressure during service braking, the spindle unit 50, which has been in contact with the inner surface of the piston 32, is separated from the piston 32, Is floating in the inner space of the piston (32). Therefore, when the vehicle body is shaken or other vibration occurs, the nut spindle 52 may vibrate in the piston 32 and strike against the inner wall of the piston 32 to generate vibration noise.

When the nut spindle 52 vibrates in the inner space of the piston 32 and the spindle 52 is hit, the brake durability may be deteriorated and a noise may be generated, thereby reducing the ride feeling.

KR 10-2013-0048346 A KR 10-2013-0038432 A KR 10-1220294 A

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide an elastic unit capable of absorbing and preventing an impact on the rim of the nut spindle so that the spindle unit of the brake and the piston do not impact on the vibration, Which can prevent the nut spindle from colliding with the spindle while vibrating at the inner wall of the spindle.

According to an aspect of the present invention, there is provided a caliper housing comprising: a disk; a carrier having a pair of pad plates for pressing both sides of the disk; a caliper housing provided on a side surface of the carrier; A piston rotatably supported on the spindle shaft, the spindle shaft being rotatable by a motor, the spindle shaft being coupled to the spindle shaft to rotate the spindle shaft; And a spindle unit configured to reciprocate in a direction of an axis of the piston, the spindle unit comprising: an elastic unit for holding the nut spindle so as to be spaced apart from the inner wall of the piston, between the nut spindle and the piston; May be further included.

In a preferred embodiment of the present invention, the elastic unit may be composed of a coupling ring coupled to the body of the nut spindle and a plurality of legs branched from the coupling ring and extending to an outer edge of the nut.

In a preferred embodiment of the present invention, the leg portion may be configured to contact the inner wall of the piston while being extended to round outside the edge of the nut portion.

In a preferred embodiment of the present invention, an end of the leg portion is formed to be rounded toward the center of the nut spindle.

According to the present invention, since the elastic unit is provided between the nut spindle and the piston, the elastic unit catches the vibration of the nut spindle and maintains a constant interval between the piston and the nut spindle, There is an advantage that it is possible to prevent the nut spindle floating in the inner space of the piston from being vibrated while hitting against the piston.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram showing a schematic configuration of an electronic disc brake according to the prior art; Fig.
2 is a sectional view of an electronic disc brake according to the present invention.
3 is a perspective view showing a state in which the elastic unit is provided in the nut spindle according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a sectional view of an electronic disc brake according to the present invention, and FIG. 3 is a perspective view showing a state in which an elastic unit is provided on a nut spindle according to the present invention.

2 and 3, an electronic disk brake according to the present invention includes a disk 100 rotated together with wheels of a vehicle, and a pair of pad plates 110 provided on both sides of the disk 100 A caliper housing (130) having a piston (132) for pressing the pair of pad plates (110) while reciprocating in a sliding manner on one side of the carrier (120) And a spindle unit 150 that converts the rotational force of the motor 140 and the motor 140 into a gentle motion and transfers the same to the piston 132. The spindle unit 150 is connected to the motor 140 And a nut spindle 152 screwed with the spindle shaft 151 and reciprocating in a rotating direction of the spindle shaft 151. The nut spindle 152 and the nut spindle 152 are rotatable, The piston 132 is provided with a nut spindle 152, And an elastic unit (170) for keeping the piston (132) separated from the inner wall of the piston (132).

The carrier 120 is fixed to the vehicle body and guides the pad plate 110 to move back and forth toward the disc 100 while preventing the pad plate 110 from being separated.

The pad plate 110 includes an inner pad plate 112 adjacent to the piston 132 and an outer pad plate 111 disposed on the opposite side of the inner pad plate 112. The pair of pad plates 110, Are provided on both sides of the disc 100 rotating together with the wheels of the vehicle.

The caliper housing 130 is provided on one side of the carrier 120, and the cylinder 133 is formed on the inside thereof. A piston 132 and a spindle unit 150 are provided on the inner side of the cylinder 133. The piston 132 is closed at the other side and the inside is formed in a cup shape and the other side reciprocates in a direction perpendicular to the inner pad plate 112 to press the inner pad plate 112 .

The spindle unit 150 is provided inside the piston 132 and is composed of a spindle shaft 151 and a nut spindle 152. The spindle shaft 151 has a male screw on an outer circumferential surface thereof. The spindle shaft 151 is provided on the central axis of the cylinder 133, and the reducer 160 and the motor 140 are connected to one end. The nut spindle 152 is provided with a female screw threadably engageable with the spindle shaft 151 inside the body and has a nose portion 153 extended to correspond to the inner wall of the piston 132 on the other side . When the spindle shaft 151 rotates in one direction or the other direction as described above, the nut spindle 152 screwed to the spindle shaft 151 moves to one side or the other side and presses the piston 132, (Not shown). At this time, the nose portion 153 is configured to move in the front and rear direction on the inner wall of the piston 132 but not to rotate, and reciprocates according to the rotational motion of the spindle shaft 151.

A finger 131 bent downward is integrally connected to the cylinder 133 at the other side of the caliper housing 130 so that the outer pad plate 111 is pressed against the disk 100 together with the sliding movement of the caliper housing 130. [ It is possible to do.

The above-described structure is a general structure of a conventional electronic disc brake, and a detailed description thereof will be omitted. The structure of the electronic disk brake according to the present invention is not limited to the above-described structure. If the elastic unit 170 is provided on the nut spindle 152 as described later, Can be applied to both.

The electronic disk brake according to the present invention has an elastic unit 170 (not shown) which keeps the nut spindle 152 spaced from the inner wall of the piston 132 between the nut spindle 152 and the piston 132 in the above- ).

The elastic unit 170 may be composed of a coupling ring 173 and a plurality of legs 175 branched from the coupling ring 173 in the other direction as shown in FIG. The coupling ring 173 is coupled to the outside of the body of the nut spindle 152 while the body of the nut spindle 152 is inserted. At this time, if necessary, a fixing groove (not shown) for fixing the elastic unit 170 to the body of the nut spindle 152 may be provided, or a fixing means may be provided on the coupling ring 173.

The plurality of leg portions 175 branched from the edge of the coupling ring 173 extend in the other direction (nose direction) and extend to the outside of the edge of the nose portion 153 of the nut spindle 152. The nose portion 153 is provided inside the piston 132 and is coupled to the spindle shaft 151. When the nose portion 153 is rotated to prevent the nut spindle 152 from rotating together when the spindle shaft 151 rotates, May be configured to face the inner wall of the piston 132, and a part thereof may be configured to be spaced apart. The leg portion 175 of the elastic unit 170 supports the outer side of the remaining portion of the nose portion 153 except for the portion where the nose portion 153 and the piston 132 face each other 132 of the spindle unit 150 to prevent the spindle unit 150 from rocking.

In a preferred embodiment of the present invention, the leg portion 175 may be rounded from the coupling ring 173 to the outside of the edge of the nose portion 153 as shown in the figure. The end of the leg portion 175 may be rounded or curled toward the center of the nut spindle 152. This is because the end of the leg portion 175 which contacts the piston 132 when the spindle unit 150 reciprocates on the inner surface of the piston 132 rubs against the inner wall of the piston 132, So that it is prevented from being damaged. In a preferred embodiment of the present invention, the leg portions 175 branched from the body of the elastic unit 170 may be composed of six pieces. It is a matter of course that this structure is suitable for the shape of the nuts 153 currently used, and it is needless to say that the number of the leg portions 175 can be varied as needed.

The piston 132 presses the pad plate 110 by the rotation of the motor 140 and the spindle shaft 151 or the piston 132 presses the pad plate 110 by the rotation of the motor 140 and the spindle shaft 151. [ The nose portion 153 is in close contact with the inner wall of the piston 132. Therefore, the spindle unit 150 is shaken and does not rock. However, at the time of service braking, the spindle unit 150 remains and the piston 132 presses the inner pad plate 112 while advancing toward the other side by the hydraulic pressure, so that the other side of the nose portion 153 is engaged with the piston 132). Therefore, when vibration occurs in any form in this state, the nuts 153 can be swung together and hit the inner wall of the piston 132. [ However, since the elastic disc unit 170 is provided between the nut spindle 152 and the piston 132, the elastic disc unit 170 can move the nut spindle 152 to the inner surface of the piston 132, So that the nut spindle 152 does not collide with the inner wall of the piston 132. As shown in FIG.

Although the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be defined by the appended claims and equivalents thereof.

100: Disk 110: Pad plate
120: carrier 130: caliper housing
131: Ping refuse 132: Piston
133: cylinder 140: motor
150: spindle unit 151: spindle shaft
152: Nut spindle 153: Nut
160: Reducer 170: Elastic unit
173: coupling ring 175: leg

Claims (4)

Disk,
A carrier having a pair of pad plates for pressing both sides of the disk;
A caliper housing provided on a side surface of the carrier,
A piston incorporated in the caliper housing and pressing the pad plate while reciprocating at one side of the carrier;
And a spindle unit which is provided in the piston and rotates by a motor, and a spindle unit which is screwed to the spindle shaft and reciprocates in a rotating direction of the spindle shaft,
Further comprising an elastic unit disposed between the nut spindle and the piston to keep the nut spindle away from the inner wall of the piston.
The method according to claim 1,
Wherein the elastic unit is constituted by a coupling ring coupled to the body of the nut spindle and a plurality of leg portions branched from the coupling ring and extending to an outer edge of the nut portion.
The method of claim 2,
And the leg portion is configured to come into contact with the inner wall of the piston while being extended to round the outside of the edge of the nuts.
The method of claim 3,
And an end of the leg portion is formed to be rounded in the center direction of the nut spindle.
KR1020140152943A 2014-11-05 2014-11-05 An electronic disk brake KR20160053631A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140152943A KR20160053631A (en) 2014-11-05 2014-11-05 An electronic disk brake

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140152943A KR20160053631A (en) 2014-11-05 2014-11-05 An electronic disk brake

Publications (1)

Publication Number Publication Date
KR20160053631A true KR20160053631A (en) 2016-05-13

Family

ID=56023445

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020140152943A KR20160053631A (en) 2014-11-05 2014-11-05 An electronic disk brake

Country Status (1)

Country Link
KR (1) KR20160053631A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180135718A (en) * 2017-06-13 2018-12-21 주식회사 만도 Electronic disc brake
US20210010553A1 (en) * 2018-03-28 2021-01-14 Foundation Brakes France Sas Lock nut
CN114514386A (en) * 2019-06-05 2022-05-17 大陆特维斯股份有限公司 Centering mechanism for a brake piston with a disc brake

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180135718A (en) * 2017-06-13 2018-12-21 주식회사 만도 Electronic disc brake
US20210010553A1 (en) * 2018-03-28 2021-01-14 Foundation Brakes France Sas Lock nut
US11686360B2 (en) * 2018-03-28 2023-06-27 Foundation Brakes France Sas Lock nut
CN114514386A (en) * 2019-06-05 2022-05-17 大陆特维斯股份有限公司 Centering mechanism for a brake piston with a disc brake

Similar Documents

Publication Publication Date Title
KR20160053631A (en) An electronic disk brake
KR101922476B1 (en) Electric caliper brake with parking function
KR20100137765A (en) Brake apparatus for bicycle
CN114876975A (en) Auxiliary brake device of drum brake
KR101904713B1 (en) Brake for vehicle
CN103738450A (en) Mechanical double-acting disc brake
KR20150091859A (en) Caliper brake for a vehicle
JP2014085010A (en) Disc type parking brake sealing member
KR20170137318A (en) Disc brake
KR20150128273A (en) Disk brake
KR20140059666A (en) Brake for vehicle
KR100771004B1 (en) Disc brake
KR20120104740A (en) Disc brake
KR20110064766A (en) Disk brake
KR100502515B1 (en) Disc brake and Pad shim
KR100808478B1 (en) Disc brake
KR100994009B1 (en) Disk Brake
KR100622473B1 (en) disk brake structure of vehicle
KR20090043207A (en) Disk brake for vehicle
CN104595395A (en) Eccentric wheel type mechanical braking device
KR101488569B1 (en) Disk Brake including Fixed type Caliper For Vehicle
KR20110125137A (en) Disk brake
KR20040079719A (en) Disk Type Brake
KR20110064765A (en) Disk brake
KR100349539B1 (en) Disk brake

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
AMND Amendment
E601 Decision to refuse application
AMND Amendment