KR20110093061A - Actuator of electric parking brake and brake caliper for automotive vehicle as one body with two-stage planetary gear into a module - Google Patents

Abstract

PURPOSE: A car caliper integrated electronic parking brake actuator in which 2 shift planetary gear is modulated and which is applied is provided to have the braking power for efficiently controlling the parking brake by inducing the reduction of the friction noise between the gears. CONSTITUTION: A car caliper integrated electronic parking brake actuator in which 2 shift planetary gear is modulated and which is applied comprise a driving unit(10), a relay gear(20), a driving gear(30), and a planetary gear box housing(60). The driving unit is remotely controlled. The relay gear is engaged and rotated with a driving unit pinion(11) of the driving unit. The relay gear relatively has much number of gears with the driving pinion in order to diminish the number of the rotation. The driving gear is engaged and rotated in the relay pinion(21) of the relay gear. The driving gear relatively has much number of gears with the relay pinion in order to diminish the number of the rotation. The planetary gear box housing is transmitted the torque through the first sun gear(31) integrally formed with the driving gear.

Description

ACTUATOR OF ELECTRIC PARKING BRAKE AND BRAKE CALIPER FOR AUTOMOTIVE VEHICLE AS ONE BODY WITH TWO-STAGE PLANETARY GEAR INTO A MODULE}

The present invention is applied to an actuator that is integrally assembled to a caliper mounted on an electronic parking brake for an automobile. As a device for preventing a vehicle from moving when the vehicle is parked, it is applied to an electronic parking brake system that allows the parking brake to be controlled through the operation of a separate parking button without manipulation of the parking lever. In addition, the present invention applies a motor-driven actuator system of an integrated structure that is assembled and operated in the brake caliper, rather than the cable-type brake actuator that controls the existing brake cable to activate / release the parking brake.

Conventional brake cable control parking brake is operated by electrical signals to solve such problems recently due to problems such as constraints and safety deterioration of the vehicle interior space generated by using the hand lever and the cable, safety degradation, complex assembly structure, etc. A lot of electronic parking brakes (EPB-Electric Parking Brake) have been developed to automatically operate the parking brake by driving the motor, but the belt or chain is applied as a part that transmits the rotational force formed on the motor to the driven gear. Problems with the durability and wear of the transmission components arise, causing the functional malfunction of the brake actuator.

Recently, a decoration that integrates such a brake device with an automobile caliper has been applied to facilitate the mounting of the EPB. In the case of integrating the EPB into the caliper, it is necessary to form a minimum size that does not increase the size of the mounted caliper by applying a gear reduction device that converts the final output to a large load while using a small motor.

The present invention has been made to solve the above problems, the object of the present invention according to the object of the present invention to improve the wear and durability of the transmission component generated when the rotational force formed in the drive gear to the driven gear The present invention provides an electronic parking brake that can be parked safely by eliminating the problems caused by belts or chains, which are existing power transmission components, by applying a two-speed gear configuration and two-speed planetary gears. In addition, by applying a two-stage planetary gear to the driven gear in a modular manner, it provides the braking force to efficiently control the parking brake by inducing the maximum reduction ratio compared to the motor torque and the reduction of friction noise between gears when the gear is operated.

In addition, the present invention provides a caliper integrated electronic parking brake actuator for automobiles in which a two-speed planetary gear that modifies the final output torque through a reduction gear ratio is generated so that an optimum parking braking force is generated without increasing motor power.

Other objects and advantages of the invention will be described below and will be appreciated by the embodiments of the invention. Furthermore, the objects and advantages of the present invention can be realized by means and combinations indicated in the claims.

The present invention is a means for solving the above problems, the remote control means; A relay gear meshed with the driving means pinion of the driving means and having a relatively larger number of gears than the driving means pinion so that the rotation speed is reduced; A drive gear meshed with the relay pinion of the relay gear, the drive gear having a larger number of gears than the relay pinion so that the rotation speed is reduced; The first ring gear receives the rotational force through the first sun gear is formed integrally with the drive gear, the first planetary gear portion and the second planetary gear portion is internally modularized, and the first ring gear meshed with the first and second planetary gear portions, respectively; A second ring gear is formed on the inner circumference and the lower end thereof to increase the rotational torque by reducing the rotational speed through the second by the first and second planetary gears, thereby providing the rotational torque to the brake caliper mounted on the electronic parking brake. A planetary gear box housing for delivery; Characterized in that consists of.

In addition, the first planetary gear portion is engaged with the outer circumference of the first sun gear to receive a rotational force, and is engaged with the first ring gear in the planetary gear box housing to rotate, thereby primarily rotating by reducing the number of revolutions. A plurality of first planetary gears for increasing torque; A second sun gear part protruding to form a plurality of first planetary gear shafts fixedly connected to the plurality of first planetary gears, and having a second sun gear formed at a bottom thereof; . ≪ / RTI >

In addition, the second planetary gear part is engaged with the outer circumference of the second sun gear to receive a rotational force, and is engaged with the second ring gear in the planetary gear box housing to rotate, thereby reducing the number of revolutions to rotate secondarily. A plurality of second planetary gears for increasing torque; A brake caliper, in which a second planetary gear shaft coupled to the plurality of second planetary gears protrudes on an upper surface thereof, and protrudes a caliper connecting nut on a lower surface thereof, thereby rotating torque received from the second planetary gear to an electronic parking brake. An output nut portion which transmits to the vehicle wheel so that the automobile wheel can be braked; . ≪ / RTI >

In addition, the first sun gear and the second sun gear is characterized in that arranged in the same axial direction.

In addition, it is characterized in that it is assembled with the brake caliper mounted on the electronic parking brake for automobiles to form an integrated.

As described above, the present invention is external to the two-speed planetary gear arranged on the same axis by using a two-speed planetary gear that converts the motor power to the final output torque when the electronic parking brake is operated compared to the existing product. While the first and second sun gears are arranged in the same axial direction, the first and second sun gears have the effect of realizing high deceleration performance such that the first and second sun gears, which are the final output shafts, generate the final output torque which is sufficient parking braking force through the final reduction ratio.

In addition, the present invention has a gear noise prevention effect according to the use of a modular application of the two-speed planetary gear in a separate box shape.

1 is an exploded perspective view of an embodiment showing an electronic parking brake actuator according to the present invention.
Figure 2 is a perspective view of one embodiment showing the engagement relationship between the first and second gear parts according to the present invention.
Figure 3 is an exploded perspective view of an embodiment showing the engagement relationship between the first and second planetary gear portion according to the present invention.
4 is a perspective view of the combination of FIG.
5 is a cross-sectional view of an embodiment showing a rotational force transmission relationship of the electronic parking brake actuator according to the present invention.

Before describing the various embodiments of the present invention in detail, it will be appreciated that the application is not limited to the details of construction and arrangement of components described in the following detailed description or illustrated in the drawings. The invention can be implemented and carried out in other embodiments and can be carried out in various ways. In addition, device or element orientation (e.g., "front", "back", "up", "down", "top", "bottom" The expressions and predicates used herein with respect to terms such as ",""left","right","lateral", etc. are used merely to simplify the description of the present invention, and related apparatus. Or it will be appreciated that the element does not simply indicate or mean that it should have a particular direction.

The present invention has the following features to achieve the above object.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations. Moreover, terms such as "first" and "second" are used in the specification and the appended claims for purposes of illustration and are not intended to indicate or mean the relative importance or spirit.

1 to 5, the two-speed planetary gear according to the preferred embodiment of the present invention will be described in detail an electronic caliper integrated electronic parking brake actuator for a vehicle applied.

As shown, the two-speed planetary gear integrated electronic parking brake actuator applied to the two-speed planetary gear according to the present invention is the drive means 10, the relay gear 20, the drive gear 30, the first planetary gear portion 40 ), The second planetary gear unit 50 and the planetary gear box housing 60.

The driving means 10 is a rotating motor or the like, and is electrically connected to an operation means 1 such as a switch or a button in a vehicle, and is remotely turned on / off by a driver's switch or button operation. Controlled and driven.

Of course, it is obvious that the driving means shaft 12 should be protruded at one end of the driving means 10.

The driving means shaft 12 is coupled to the drive means pinion 11 having a screw thread formed on the outer circumference thereof is co-rotated with the drive means shaft 12, so that the rotational force is transmitted to the component to be described later.

The relay gear 20 is located on the same horizontal line as the driving means pinion 11, and is engaged with the driving means pinion 11, and has a relatively higher number of threads than the driving means pinion 11. By forming the peripheral portion, the number of revolutions transmitted from the drive means pinion 11 is reduced through the relay gear 20 so that the rotation torque is increased. (In other words, the reduction ratio is increased to increase the torque.)

The relay gear 20 is formed integrally with the relay gear 20 on the upper surface, has a relatively smaller diameter than the relay gear 20, so as to form a relay pinion 21 is formed on the outer periphery do. (It should be obvious that the relay gear shaft 22 penetrating the center of the relay gear 20 and the relay pinion 21 should be provided.) For convenience of description, the relay gear 20 and the relay pinion are provided in the present invention. Reference numeral 21 and the relay gear shaft 22 are referred to as first gear 20 '.

The drive gear 30 is positioned on the same horizontal line as the relay pinion 21 and is engaged with the relay pinion 21, and has a relatively larger diameter than the relay pinion 21. By allowing more threads to be formed, the number of revolutions transmitted from the relay pinion 21 is reduced through the drive gear 30 so that the rotation torque is increased. (In other words, the reduction ratio is increased to increase the torque.)

The drive gear 30 is formed integrally with the drive gear 30 on the bottom surface, has a relatively smaller diameter than the drive gear 30, and forms a first sun gear 31 having a thread formed on the outer circumference thereof. Do it. (It will be obvious that the drive gear shaft 45 which continuously passes through the center of the drive gear 30 and the first sun gear 31. In addition, in the present invention for the convenience of description, the drive gear 30 is provided. ), The first sun gear 31 and the drive gear shaft 45 are referred to as the second gear portion 30 '.

That is, through the configuration of the second gear consisting of the first gear unit 20 'and the second gear unit 30', it is possible to increase the rotational torque by preferentially reducing the number of revolutions.

The first planetary gear unit 40 includes a plurality of first planetary gears 41 forming a thread at an outer circumference thereof and a plurality of first planetary gear shafts 44 to which the plurality of first planetary gears 41 are fitted. It is projected upright to the upper portion of the first mounting plate 43, the bottom surface is composed of a second sun gear portion 42 consisting of a second sun gear 46 forming a thread on the outer periphery. (In the center of the upper surface of the second mounting plate 53, the drive gear shaft 45 is formed to stand upright.)

That is, when the drive gear shaft 45 is inserted into and fixed to the center of the first sun gear 31 to rotate the first mounting plate 43 of the first planetary gear portion 40, the plurality of first planetary gears 41 is rotated. ) Is engaged on the outer circumference of the first sun gear 31 and rotated while being fixed to each of the plurality of first planetary gear shafts 44. Of course, as described above, the plurality of first planetary gears 41 engaged with the outer circumference of the first sun gear 31 should be configured not to be engaged with each other, and the plurality of first planetary gears 41 are the first sun gears. More threads should be formed on the outer circumference so as to have a relatively larger diameter than (31). A gear must be formed so that the first planetary gear 41 is engaged and rotated even outside the plurality of first planetary gears 41, which is referred to as a first ring gear 62, which will be described later. The planetary gear box housing 60 to be described in detail.

Due to the rotation as described above, the first sun gear 31 engages and rotates the plurality of first planetary gears 41 on the outer circumference and causes the second sun gear portion 42 to rotate, thereby reducing the number of rotations to rotate first. Torque is increased.

The second planetary gear unit 50 includes a plurality of second planetary gears 51 forming a thread at an outer circumference thereof and a plurality of second planetary gear shafts 54 to which the plurality of second planetary gears 51 are fitted. To the upper portion of the second mounting plate 53, the bottom surface is composed of an output nut portion 52 consisting of a caliper connecting nut 55 protruding to be connected to the brake caliper 70 formed on the electronic parking brake of the vehicle. .

That is, a plurality of second planetary gears 51 are joined to the outer circumference of the second sun gear 46 formed on the bottom surface of the second sun gear part 42, and the second planetary gear 51 is the second planetary gear. When the output nut part 52 is rotated by being fixed to the gear shaft 54, the rotational force is formed on the bottom surface of the second mounting plate 53, and the caliper connecting nut connected to the brake caliper 70 formed on the electronic parking brake. It is transmitted through the 55 to brake the vehicle wheels 80 of the vehicle. Of course, as described above, the plurality of second planetary gears 51 engaged with the outer circumference of the second sun gear 46 should be configured not to be engaged with each other, and the plurality of second planetary gears 51 are second sun gears. More threads should be formed on the outer circumference so as to have a relatively larger diameter than (46). Such a second planetary gear 51 should be formed so that the second planetary gear 51 may be engaged and rotated outside of the plurality of second planetary gears 51, which will be referred to as a second ring gear 63. The planetary gear box housing 60 to be described in detail.

Due to the rotation as described above, the second sun gear 46 engages and rotates the plurality of second planetary gears 51 on the outer circumference and causes the second sun gear portion 42 to rotate, thereby reducing the number of rotations to rotate secondly. Torque is increased.

The planetary gear box housing 60 is formed by modularizing the first planetary gear part 40 and the second planetary gear part 50 into a box shape, and the planetary gear box housing 60 includes an upper housing 61 and It is composed of a lower housing 64 is fastened to the lower portion of the upper housing 61 to form an integrated unit (the upper housing 61 and the lower housing 64 is formed in various coupling forms by the user, and separated from each other and The first ring gear 62 is formed on the inner circumference of the upper housing 61 so that the plurality of first planetary gears 41 are engaged and rotated. A second ring gear 63 is formed in the lower portion of the inner circumference of the upper housing 61 so that the plurality of second planetary gears 51 are engaged and rotated. In other words, the plurality of first planetary gears 41 and the second planetary gears 51 mesh with an inner circumference of the second planetary gear box housing 60, more specifically, an inner circumference of the upper housing 61. And a first ring gear 62 and a second ring gear 63 are formed in a thread form so as to be rotated.

Of course, a seating groove 65 is formed in the lower housing 64 so that the second mounting plate 53 of the output nut part 52 can be installed correspondingly, and a caliper of the output nut part 52 is provided. The fitting hole 66 should also be perforated so that the connection nut 55 may protrude to the outside.

In addition, the upper housing 61 and the lower housing 64, protruding a plurality of engaging pieces 67 on the outer periphery of the lower housing 64, the plurality of engaging pieces 67 correspond to According to the embodiment of the user may be configured to be detachable according to the user's embodiment, such as forming a plurality of coupling portion 69 in the upper housing 61, the fastening hole 68 to be fitted and fastened, the first oily Although the number of the gears 41 is three and the number of the second planetary gears 51 is four, the number of the gears can be variously changed by the user's choice as long as it can increase the rotational torque by reducing the number of rotations. It will be possible.

In addition, reference numeral 13 in the drawings not described above denotes a drive means damper.

As mentioned above, although this invention was demonstrated by the limited embodiment and drawing, this invention is not limited by this, The person of ordinary skill in the art to which this invention belongs, Various modifications and changes may be made without departing from the scope of the appended claims.

1: operating means 10: driving means
11: motor pinion 12: drive shaft
20 ': 1st gear part 20: relay gear
21: relay pinion 30 ': second gear
30: drive gear 31: first sun gear
40: first planetary gear unit 41: first planetary gear
42: second sun gear part 43: first mounting plate
44: first planetary gear shaft 45: drive gear
46: second sun gear 50: second planetary gear
51: second planetary gear 52: output nut portion
53: second mounting plate 54: second planetary gear shaft
55: caliper connection nut 60: planetary gear box housing
61: upper housing 62: first ring gear
63: second ring gear 64: lower housing
65: seating groove 66: fitting hole
70: brake caliper 80: car wheels

Claims (5)

A driving means 10 remotely controlled;
A relay gear 20 engaged with the driving means pinion 11 of the driving means 10 and having a relatively larger number of gears than the driving means pinion 11 so that the rotational speed is reduced;
A drive gear (30) geared to the relay pinion (21) of the relay gear (20) and having a larger number of gears than the relay pinion (21) so that the rotational speed is reduced;
Receives the rotational force through the first sun gear 31 formed integrally with the drive gear 30, the first planetary gear portion 40 and the second planetary gear portion 50 is installed in a modular manner, the first, The first ring gear 62 and the second ring gear 63 meshed with the two planetary gear parts 50 are formed on the inner circumference and at the lower end thereof, and the first and second planetary gear parts 50 are disposed on the lower end. A planetary gear box housing 60 for increasing the rotational torque by decreasing the rotational speed, so that the rotational torque is transmitted to the brake caliper 70 mounted to the electronic parking brake of the vehicle;
Automotive caliper integrated electronic parking brake actuator is applied to the two-speed planetary gear is characterized in that the modular configuration.
The method of claim 1,
The first planetary gear portion 40
It is engaged with the outer circumference of the first sun gear 31 to receive the rotational force, and is engaged with the first ring gear 62 in the planetary gear box housing 60 to rotate, thereby primarily reducing the number of revolutions. A plurality of first planetary gears 41 for increasing rotational torque;
A second sun gear part 42 having a plurality of first planetary gear shafts 44 fixedly connected to the plurality of first planetary gears 41 and protruding from the top thereof, and having a second sun gear 46 formed at a bottom thereof;
Automotive caliper integrated electronic parking brake actuator applied to the two-speed planetary gear is characterized in that the modular configuration.
The method of claim 2,
The second planetary gear unit 50
It is engaged with the outer circumference of the second sun gear 46 to receive the rotational force, and is engaged with the second ring gear 63 in the planetary gear box housing 60 to rotate, thereby reducing the number of rotations secondarily. A plurality of second planetary gears 51 for increasing rotational torque;
A second planetary gear shaft 54 coupled to the plurality of second planetary gears 51 protrudes on an upper surface thereof, and protrudes a caliper connecting nut 55 on a lower surface thereof, and is transferred from the second planetary gear 51. An output nut part 52 for transmitting the received rotation torque to the brake caliper 70 mounted to the electronic parking brake, so that the automobile wheel 80 can be braked;
Automotive caliper integrated electronic parking brake actuator applied to the two-speed planetary gear is characterized in that the modular configuration.
The method of claim 2,
The first call gear 31 and the second sun gear 46 is a caliper integrated electronic parking brake actuator for a two-phase planetary gear is applied modularized, characterized in that arranged in the same axial direction.
The method of claim 1,
An automobile caliper integrated electronic parking brake actuator in which a two-speed planetary gear is modularized and applied to a brake caliper 70 mounted on an electronic parking brake for a vehicle to form an integrated body.

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