KR101761589B1

KR101761589B1 - Electric disk brake and assembling method thereof

Info

Publication number: KR101761589B1
Application number: KR1020160019483A
Authority: KR
Inventors: 서병국
Original assignee: 주식회사 만도
Priority date: 2016-02-19
Filing date: 2016-02-19
Publication date: 2017-07-26

Abstract

An electric disk brake is disclosed. The electric disk brake according to an embodiment of the present invention includes a caliper housing having a fastening hole, a coupling member coupled to the actuator housing and the actuator housing, the actuator housing having a first through hole at a position corresponding to the fastening hole, And a cable holder having a second through hole at a position corresponding to the hole, wherein a protruding indentation protrusion is formed around the first through-hole closely in contact with the cable holder, and when the cable holder and the actuator housing are engaged, 2, the cable holder and the actuator housing are maintained in the engaged state.

Description

ELECTRIC DISK BRAKE AND ASSEMBLING METHOD THEREOF BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric disk brake and a method of assembling the electric disk brake, and more particularly, to an electric disk brake and a method of assembling the electric disk brake.

Generally, an electric disk brake performs a parking brake function for braking a vehicle by forcibly pressing a friction pad on both sides of a disk rotating together with a wheel of the vehicle, and for electrically operating the parking brake to keep the vehicle in a stopped state Device.

The electric disk brake includes a pair of pad plates disposed on both sides of the disk for pressing the disk to generate a braking force, a carrier for supporting the pair of pad plates, A caliper housing provided with a piston which is movably moved by braking oil pressure, and an actuator for operating the piston by a mechanical mechanism.

Korean Patent Laid-Open No. 10-2015-0110395 (published on October 22, 2015)

Embodiments of the present invention provide an electric disc brake and a method of assembling the same that can shorten the cycle time of assembling steps of an electric disc brake.

According to an aspect of the present invention, there is provided a caliper assembly including: a caliper housing having a fastening hole; an actuator housing coupled to the actuator housing, the actuator housing having a first through hole at a position corresponding to the fastening hole, And a cable holder having a second through hole at a position corresponding to the through hole, wherein a protruding indentation protrusion is formed around the first through hole closely contacted with the cable holder, and the cable holder and the actuator housing are coupled , The cable holder and the actuator housing are maintained in the engaged state as the press-fit projection is press-fitted into the second through-hole.

The first through hole may include a bolt holder for holding a fastening bolt inserted into the first through hole.

The bolt holder may be formed of a soft plastic material.

The bolt holder may be removably mounted on the first through hole.

Further, the bolt holder can be insert-injected.

According to another aspect of the present invention, there is provided a method of assembling the electric disk brake, wherein the actuator housing is coupled to the cable holder by inserting the press-fit projection into the second through hole, The fastening bolt is inserted into the through hole, the fastening bolt is fastened by the bolt holder, and the fastening bolt fixed by the bolt holder is fastened to the fastening hole of the caliper housing, A method of assembling the electric disk brake to complete the engagement of the actuator housing and the caliper housing can be provided.

In the embodiments of the present invention, since the actuator housing and the caliper housing are finally assembled using the fastening bolts in a state where the actuator housing and the cable holder are assembled together, the installation structure is simple and the assembly time is shortened, The productivity is improved.

1 is a perspective view of an electric disk brake according to an embodiment of the present invention.
2 is an exploded perspective view of an electric disc brake according to an embodiment of the present invention.
3 is a perspective view illustrating an indentation protrusion provided in an actuator housing according to an embodiment of the present invention.
4 shows a state in which a cable holder is coupled to the indentation protrusion according to the embodiment of the present invention.
FIG. 5 illustrates a process of fastening a fastening bolt to an assembled actuator housing and a cable holder according to an embodiment of the present invention. Referring to FIG.
6 is an operational state view of the actuator housing in which the fastening bolts are fastened to the caliper housing according to the embodiment of the present invention.

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

FIG. 1 is a perspective view of an electric disc brake according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of an electric disc brake according to an embodiment of the present invention.

1 and 2, an electric disc brake 10 according to an embodiment of the present invention includes a caliper housing (not shown) having a cylinder slidably mounted on a carrier coupled to a vehicle body and capable of moving forward and backward by braking hydraulic pressure of the piston An actuator housing 30 incorporating a motor for generating a braking force and a plurality of gears and coupled to the caliper housing 20 and various electronic parts (motors, sensors, braking hoses, etc.) mounted on the caliper housing 20 And a cable holder 40 coupled with the actuator housing 30 for securing the cable to be connected.

The caliper housing 20 includes a fingering 21 for operating the brake pad, a cylinder portion 23 provided with a piston sliding by braking oil pressure, and a coupling hole 50 for coupling with the actuator housing 30 And a connecting portion 25 formed thereon.

The actuator housing 30 includes therein a motor for generating a parking braking force and a plurality of gears for transmitting the power of the motor to the cylinder portion 23 of the caliper housing 20, 25).

The actuator housing 30 is provided with a first through hole 60 disposed at a position corresponding to the coupling hole 50 formed in the caliper housing 20 when the actuator housing 30 is coupled with the caliper housing 20. [

The cable holder 40 has a plurality of hooks 41 for fixing a cable connected to various electronic components (motors, sensors), braking hoses and the like mounted on the caliper housing 20, And a second through hole 70 for coupling with the actuator housing 30 is formed at a position corresponding to the first through hole 60.

The cable holder 40 may be formed of a metal or plastic plate having a thin thickness as a whole, and a plurality of hooks 41 may be arranged on the free end side of the plate after the plate is bent a plurality of times.

The caliper housing 20, the actuator housing 30 and the cable holder 40 are assembled in the assembling process by the fastening hole 50 of the caliper housing 20, the first through-hole 60 of the actuator housing 30, And is fastened by a fastening bolt (80) which is fastened through the second through hole (70) of the fastening member (40).

At this time, the actuator housing 30 is seated on the connecting portion 25 which is the assembling position of the caliper housing 20 and then moves to the assembling process of the cable holder 40. However, until the actuator holder 30 moves to the assembling process, It is difficult to maintain the assembled position of the housing 30. When the cable holder 40 is attached to the housing 30, it is difficult to maintain alignment of the fastening part of the fastening bolt 80 and the caliper housing 20.

Also, the assembling of the fastening bolt 80 becomes unstable, and there is a possibility that the fastening bolt 80 is lost during the movement in the bolting process, or the fastening error occurs.

The electric disk brake 10 according to the embodiment of the present invention moves the actuator housing 30 to the caliper housing 20 after moving the actuator housing 30 and the cable holder 40, And finally final assembly.

FIG. 3 is a perspective view illustrating a press-fit projection provided in the actuator housing according to an embodiment of the present invention, and FIG. 4 illustrates a state in which a cable holder is coupled to the press-fit projection according to an embodiment of the present invention.

Referring to FIG. 3, the actuator housing 30 according to the embodiment of the present invention may be provided with a press-in projection 90 having a hollow cylindrical shape protruding outwardly around the first through-hole 60.

The press-fit protrusion 90 may be formed to have a predetermined height along the circumference of the first through-hole 60 from the upper surface of the fastening flange 31 of the actuator housing 30 in which the first through-hole 60 is formed.

The press-fit projection 90 has a diameter and a height that can be press-fitted into the second through-hole 70 formed in the cable holder 40, so that the cable holder 40 can be joined.

That is, as shown in FIG. 4, the cable holder 40 is inserted into the actuator housing (not shown) as the press-fit protrusion 90 formed in the actuator housing 30 is pressed into the second through-hole 70 of the cable holder 40 30 and the cable holder 40 remain coupled.

The cable holder 40 and the actuator housing 30 are coupled to each other through the first and second through holes 60 and 70 in the first through hole 60 through the press- A bolt holder 100 for fixing the fastening bolts 80 to be fastened can be installed.

The bolt holder 100 may be formed of a soft plastic material and may have a hollow cylindrical shape having a diameter into which the fastening bolt 80 can be press-fitted. That is, the hollow of the bolt holder 100 may have a diameter corresponding to the thread diameter of the fastening bolt 80.

The bolt holder 100 may be detachably mounted in the first through-hole 60 or may be insert-injected into the first through-hole 60 when the actuator housing 30 is molded.

5, when the fastening bolt 80 is inserted into the bolt holder 100, the fastening bolt 80 is inserted into the bolt holder 100, So that the fastening bolt 80 can be fixed.

That is, after the press-fit projection 90 of the actuator housing 30 is press-fitted into the second through-hole 70 of the cable holder 40, the fastening bolt 80 is inserted into the first and second through- The fastening bolt 80 is held in a fixed state by the bolt holder 100 disposed in the first through-hole 60.

The actuator housing 30 and the cable holder 40 assembled by tightening the fastening bolts 80 are transferred to a post-process to be engaged with the caliper housing 20, and the caliper housing 20 and the caliper housing 20, The assembly of the electric disk brake 10 is completed by fastening the fastening bolt 80 to the fastening hole 50 of the caliper housing 20 in a state where the actuator housing 30 is aligned with the assembled position.

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

10: electric disk brake, 20: caliper housing,
30: actuator housing, 31: fastening flange,
40: cable holder, 41: hook,
50: fastening hole, 60: first through hole,
70: second through hole, 80: fastening bolt,
90: indentation projection, 100: bolt holder.

Claims

A caliper housing having a fastening hole;
An actuator housing coupled to the caliper housing and having a first through hole at a position corresponding to the fastening hole; And
And a cable holder coupled to the actuator housing and having a second through hole at a position corresponding to the first through hole,
A protruding press-fit protrusion is formed around the first through-hole closely in contact with the cable holder,
Wherein when the cable holder and the actuator housing are engaged with each other, the press-fit protrusion is press-fitted into the second through-hole, so that the cable holder and the actuator housing are maintained in an engaged state.

The method according to claim 1,
Wherein the first through hole is provided with a bolt holder for holding a fastening bolt inserted into the first through hole.

3. The method of claim 2,
Wherein the bolt holder is formed of a soft plastic material.

3. The method of claim 2,
And the bolt holder is detachably mounted on the first through hole.

3. The method of claim 2,
Wherein the bolt holder is insert-injected.

The method of assembling an electric disc brake according to any one of claims 2 to 5,
Wherein the actuator housing and the cable holder are coupled with each other by inserting the indentation protrusion into the second through hole,
The fastening bolt is inserted into the first and second through holes, the fastening bolt is fixed by the bolt holder,
The coupling of the cable holder, the actuator housing, and the caliper housing is completed by fastening the fastening bolt fixed by the bolt holder to the fastening hole of the caliper housing.