KR20110057764A - Electrical mechanical brake - Google Patents

Electrical mechanical brake Download PDF

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Publication number
KR20110057764A
KR20110057764A KR1020090114308A KR20090114308A KR20110057764A KR 20110057764 A KR20110057764 A KR 20110057764A KR 1020090114308 A KR1020090114308 A KR 1020090114308A KR 20090114308 A KR20090114308 A KR 20090114308A KR 20110057764 A KR20110057764 A KR 20110057764A
Authority
KR
South Korea
Prior art keywords
gear
power
shaft
locking
drive
Prior art date
Application number
KR1020090114308A
Other languages
Korean (ko)
Inventor
이석환
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 KR1020090114308A priority Critical patent/KR20110057764A/en
Publication of KR20110057764A publication Critical patent/KR20110057764A/en

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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
    • 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
    • F16D2125/44—Mechanical mechanisms transmitting rotation
    • F16D2125/46—Rotating members in mutual engagement
    • F16D2125/48—Rotating members in mutual engagement with parallel stationary axes, e.g. spur gears
    • 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
    • F16D2125/44—Mechanical mechanisms transmitting rotation
    • F16D2125/46—Rotating members in mutual engagement
    • F16D2125/50—Rotating members in mutual engagement with parallel non-stationary axes, e.g. planetary gearing
    • 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
    • F16D2127/00—Auxiliary mechanisms
    • F16D2127/06—Locking mechanisms, e.g. acting on actuators, on release mechanisms or on force transmission mechanisms

Abstract

A gear assembly disposed between the spindle and the driving motor, the gear assembly including a plurality of gears for transmitting the driving force of the driving motor to the spindle, and a first gear externally connected to the drive gear connected to the driving shaft of the driving motor among the gears of the gear assembly; Disclosed is an electronic braking apparatus including a plurality of locking holes and a locking unit having a moving shaft coupled to a locking hole of a first gear so as to limit movement of a gear assembly when the power is turned off. The electronic braking device can maintain the braking force even when the power is turned off by the plurality of locking holes and the locking unit.

Figure P1020090114308

Description

Electronic brake system

The present invention relates to an electronic braking apparatus capable of exerting a braking force even when the power supply is turned off.

In general, a vehicle braking device is a device that obtains a braking force by pressing a portion of a disk-shaped disk rotating together with a wheel with friction pads on both sides. The braking force provided to such a braking device is obtained by hydraulic pressure or electric rotational force of the motor. Here, the case of obtaining the braking force through the motor is called an electronic mechanical brake (EMB).

The electromagnetic braking device includes a drive motor, a gear assembly coupled to the rotational shaft of the drive motor, and a pressing member for pressing the friction pad while advancing by the rotation of the gear assembly.

However, the electronic braking device as described above is composed of a gear assembly having no locking function, and thus there is a problem in that the braking force of the parking brake cannot be maintained when the power is turned off.

The present invention is to solve the above problems, an object of the present invention is to provide an electronic braking device that can maintain the braking force of the parking brake even when the power is off.

In accordance with an aspect of the present invention, there is provided an electronic braking apparatus including a pair of pad plates to which a friction pad for pressurizing a disk is attached, a carrier for supporting the pad plate, and a carrier pad for pressing the pad plates. A caliper housing is supported to be retractable, and a pressing device for pressing the pad plate,

The pressurizing device includes a pressurizing member installed in the caliper housing so as to pressurize one of the pad plates, a spindle coupled to the pressurizing member, a drive motor for generating a driving force, and a boosting unit installed on the shaft of the spindle. And a gear assembly disposed between the power unit and the driving motor, the gear assembly including at least one connection gear for transmitting the rotational force of the driving motor to the power unit, and limiting the movement of the gear assembly when the power is turned off. It includes a locking unit,

The gear assembly includes a drive gear coupled to a drive shaft of the drive motor, a first gear externally connected to the drive gear, and having a plurality of lock holes through which the lock unit is moved.

The plurality of locking holes are formed at the same interval and size on the same diameter of the first gear.

The locking unit includes a body, a moving shaft provided to be retractable in the inside of the body, a magnet and a coil for moving the moving shaft to the locking hole when power is supplied, and an elastic member elastically supporting the moving shaft. It is done.

The power unit includes a sun gear, a plurality of planetary gears circumscribed to the sun gear, a ring gear inscribed with the planetary gears, and a power shaft provided at one end thereof.

At least one gear is further installed between the first gear and the boost shaft.

The electronic braking apparatus of the present invention can maintain a braking force even when the power is turned off by a locking unit having a locking hole formed in the first gear of the connecting gear of the gear assembly and a moving shaft coupled to the locking hole.

Disc brake of the present invention, as shown in Figures 1 to 3 and the disk 10 to rotate with the wheels of the vehicle, and both sides of the disk 10 to press the both sides of the disk 10 to perform braking A pair of pad plates 11 and 12 to which the first and second friction pads 13 and 14 are disposed, and a caliper housing 20 and a brake for pressing the pair of pad plates 11 and 12, respectively. It is provided with a pressing device 40 installed in the caliper housing 20 for operation.

The pair of pad plates 11 and 12 are supported by the carrier 30 fixed to the vehicle body so as to advance and retract the first and second friction pads 13 and 14 toward both sides of the disk 10. .

The caliper housing 20 has a hollow body portion 21, an extension portion 22 extending from the body portion 21 toward the outer pad plate 12 of the pair of pad plates, and the outer pad plate 12. Finger portion 23 connected to the extension portion 22 to support the back of the.

In addition, the pressurizing device 40 is mounted to the body portion 21 of the caliper housing 20 so as to pressurize the inner pad plate 11 of the pair of pad plates 11 and 12.

The pressurizing device 40 is attached to the pressurizing member 41 and the pressurizing member 41 which are installed in the body portion 21 of the caliper housing 20 so as to pressurize and release the inner pad plate 11. It includes a combined spindle 42, a gear assembly 50 connected to the spindle 42, and a drive motor 45 connected to the gear assembly 50.

The pressing member 41 is installed inside the body portion 21 so as to advance and retreat in a restricted state, and has a female screw portion coupled to the spindle 42. The structure for limiting the rotation of the pressing member 41 is the outer surface of the pressing member 41 and the inner surface of the body portion 21 coupled correspondingly is polygonal or the outer surface and the body portion 21 of the pressing member 41. It can be implemented by the manner in which the guide means (not shown) of the key and key groove shape is installed on the inner surface.

The spindle 42 has a male screw portion on one side thereof so as to be engaged with the female screw portion of the pressing member 41. In addition, the spindle 42 is rotatably installed in the body portion 21 so as to be parallel to the direction in which the pressing member 41 moves forward and backward. The first bearing 43 may be installed in the body 21 to support the spindle 42.

The gear assembly 50 is provided to transmit the rotational force of the drive motor 45 to the spindle 42 as described above. The gear assembly 50 includes a power unit 60 installed on the shaft of the spindle 42, and at least one connection gear 70 connected between the power unit 60 and the drive motor 45. ).

The power unit 60 includes a sun gear 61, a plurality of planetary gears 62 external to the sun gear 61, a ring gear 63 inscribed with the plurality of planetary gears 62, and a plurality of planetary planets. The carrier 64 which supports the gear 62, and the backing shaft 65 in which the sun gear 61 is provided in the one end part are included. In addition, the power unit 60 may be a spur gear assembly that is installed in the empty space inside the body portion 21, although not shown in the figure.

The connecting gear 70 includes a drive gear 71 connected to the drive shaft 46 of the drive motor 45, a first gear 72 circumscribed with the drive gear 71, and a first gear 72 of the first gear 72. A second gear 73 provided on the shaft and rotated according to the rotation of the first gear 72; and a third gear that is external to the second gear 73 and coupled to the force shaft 65 of the power unit 60 ( 74).

At this time, at least one connection gear 70 may be provided if the driving motor 45 and the power unit 60 can be connected to each other.

On the other hand, the electronic braking apparatus according to the present invention is moved to one of the plurality of lock holes 80 and the plurality of lock holes 80 of at least one of the plurality of gears provided in the gear assembly 50 of the gear It includes a locking unit 90 to limit the movement.

The lock hole 80 may be formed in at least one gear of the gear of the gear assembly 50. In the embodiment of the present invention, the lock hole 80 is the first gear 72 circumscribed with the drive gear 71. Is formed. The locking hole 80 may be formed at the same diameter and the same spacing on the same diameter in the first gear 72 as shown.

At this time, when the lock hole 80 is formed in the planetary gear 62 of the power unit 60 and the third gear 74 of the connecting gear 70, the torque increases toward the end of the gear assembly 50. Therefore, the force of the strong locking unit 90 is required to limit or release the movement of the gear through the locking unit 90.

In addition, when the lock hole 80 is formed in the drive gear 71, the diameter of the drive gear 71 is small as shown, so that the moving shaft 92 of the lock unit 90 to be described later is a lock hole ( In order to be inserted into the 80, the turning angle of the drive gear 71 is inevitably large.

Accordingly, the lock hole 80 of the present invention has a large size of the first gear 72 so that the angle of turning the lock unit 90 to be inserted into the lock hole 80 is small and the required torque is small. It is preferable to be formed in the first gear 72 which is external to the drive gear 71 of the gears of the ().

The locking unit 90 includes a body 91, a moving shaft 92 installed at the center of the body 91, and a permanent magnet for moving the moving shaft 92 to any one of the plurality of locking holes 80. 93 and the coil 94, and the solenoid device including an elastic member 95 for elastically supporting the moving shaft 92 in the interior of the body (91).

At this time, the moving shaft 92 is the power supply is supplied to the lock unit 90 when the electronic braking device of the present invention is operated when a current flows in the coil 94 generates a magnetic force in the coil 94 coil 94 ) And the repulsive force or attraction between the permanent magnet 93 is moved.

In addition, the moving shaft 92 is not supplied with power to the lock unit 90 when the electronic braking device is inoperative, so that the movable shaft 92 returns to its original position by the elastic member 95, thereby providing a plurality of lock holes 80. Is inserted into one of the limits the movement of the first gear (71).

That is, in the locking unit 90 of the present invention, when the power is turned on, the moving shaft 92 is separated from the locking hole 80 formed in the first gear 72 and the power is turned off. The movement shaft 92 is coupled to the locking hole 80 of the first gear 72 to restrict the movement of the gear assembly 50.

Therefore, the electronic braking device having the above structure can maintain the braking force of the parking brake by limiting the movement of the gear by using the locking unit 90 even when the power is turned off.

1 is a cross-sectional view showing an electronic braking apparatus according to the present invention.

2 is a perspective view showing an operating state of the locking unit shown in FIG.

3 is an enlarged cross-sectional view of the locking unit shown in FIG. 1.

<Explanation of symbols for the main parts of the drawings>

10 disc 11,12 pad plate

13,14: friction pad 20: caliper housing

30 carrier 41 pressure member

42: spindle 45: drive motor

50: gear assembly 60: power unit

70: connecting gear 71: driving gear

72: first gear 73: second gear

74: third gear 80: locking hole

90: lock unit 91: body

92: moving axis 93: permanent magnet

94: coil 95: elastic member

Claims (4)

A pair of pad plates having a friction pad attached thereto for pressurizing the disk, a carrier supporting the pad plate, a caliper housing removably supported on the carrier for pressurizing the pad plates, and pressing the pad plate In the electronic braking device comprising a pressurizing device, The pressurizing device, A pressing member removably installed in the caliper housing to press one of the pad plates; A spindle coupled to the pressing member; A drive motor for generating a driving force, A gear assembly including a power unit installed on the shaft of the spindle, and at least one connection gear disposed between the power unit and the drive motor to transmit the rotational force of the drive motor to the power unit; It includes a locking unit for limiting the movement of the gear assembly when the power is off, The gear assembly includes a drive gear coupled to a drive shaft of the drive motor, a first gear externally connected to the drive gear, and having a plurality of lock holes through which the lock unit is moved. . The method of claim 1, The plurality of locking holes are formed in the same diameter and spaced on the same diameter of the first gear electronic braking device. 3. The method of claim 2, The locking unit includes a body, a moving shaft provided to be retractable in the inside of the body, a magnet and a coil for moving the moving shaft to the locking hole when power is supplied, and an elastic member elastically supporting the moving shaft. Electronic braking system. The method of claim 1, The power unit includes a sun gear, a plurality of planetary gears circumscribed to the sun gear, a ring gear inscribed with the planetary gears, and a power shaft provided at one end thereof. At least one gear is further provided between the first gear and the force shaft.
KR1020090114308A 2009-11-25 2009-11-25 Electrical mechanical brake KR20110057764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020090114308A KR20110057764A (en) 2009-11-25 2009-11-25 Electrical mechanical brake

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090114308A KR20110057764A (en) 2009-11-25 2009-11-25 Electrical mechanical brake

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101327358B1 (en) * 2011-11-29 2013-11-11 주식회사 만도 Electrical mechanical brake
DE102013015066A1 (en) 2012-09-10 2014-03-13 Mando Corporation Electric caliper brake with parking function
CN108679118A (en) * 2018-07-05 2018-10-19 江西飞达电气设备有限公司 A kind of mechanical load moment limiter
KR20200059973A (en) 2018-11-22 2020-05-29 주식회사 만도 Electro mechanical brake system
KR102512309B1 (en) 2021-10-27 2023-03-22 에이치엘만도 주식회사 Electric brake system and a vehicle having the same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101327358B1 (en) * 2011-11-29 2013-11-11 주식회사 만도 Electrical mechanical brake
DE102013015066A1 (en) 2012-09-10 2014-03-13 Mando Corporation Electric caliper brake with parking function
CN103661315A (en) * 2012-09-10 2014-03-26 株式会社万都 Electric caliper brake with parking function
CN103661315B (en) * 2012-09-10 2016-03-30 株式会社万都 There is the electric caliper brake of parking function
DE102013015066B4 (en) * 2012-09-10 2017-07-13 Mando Corporation Electric caliper brake with parking function
CN108679118A (en) * 2018-07-05 2018-10-19 江西飞达电气设备有限公司 A kind of mechanical load moment limiter
CN108679118B (en) * 2018-07-05 2024-03-22 江西飞达电气设备有限公司 Mechanical moment limiter
KR20200059973A (en) 2018-11-22 2020-05-29 주식회사 만도 Electro mechanical brake system
KR102512309B1 (en) 2021-10-27 2023-03-22 에이치엘만도 주식회사 Electric brake system and a vehicle having the same

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E601 Decision to refuse application