KR102265283B1 - Brake disc unit for vehicles - Google Patents

Abstract

Disclosed is a disc brake unit for a vehicle. The disc brake unit for a vehicle according to an embodiment of the present invention is installed inside a caliper surrounding one side of a disc for a vehicle to reduce or stop the rotational speed of the disc through a friction pad rubbing against the disc. , a housing installed inside the caliper and having an open side surface facing the friction pad, a fixed plate and a moving plate accommodated in the housing, a gear disposed inside the housing and connected to a driving motor to increase the rotational speed part, connected to the gear part, one end is rotatably installed on the fixed plate, a rotation shaft provided with a screw in a certain section of the outer circumferential surface of the other end, is inserted into the other end of the rotation shaft and moves forward and backward on the screw according to the rotation of the rotation shaft A moving block, which is disposed to cross each other on the moving block, connects the fixed plate and the moving plate, and as the moving block moves forward and backward, the friction force of the friction pad with respect to the disk is varied through the moving plate through the moving block and a plurality of link units configured to

Description

Brake Disc Unit for Vehicles {BRAKE DISC UNIT FOR VEHICLES}

The present invention relates to a brake disk unit for a vehicle, and more particularly, to a brake disk unit for a vehicle capable of braking a vehicle.

In general, a brake device for a vehicle is a brake device capable of decelerating or stopping a driving vehicle and maintaining the vehicle in a parked state.

As such a brake device, a friction type brake is used that converts kinetic energy into thermal energy through frictional force and releases it into the atmosphere to perform a braking action, which is a disk that rotates together with the wheel of the vehicle. A braking function is performed by pressing with a pair of pads from both sides using hydraulic pressure.

However, since the hydraulic brake device is implemented in a manner that strongly pushes the pad toward the disk using hydraulic pressure during braking, the configuration of the device for this is complicated.

That is, the existing hydraulic brake system requires a complex device configuration consisting of a master cylinder that is operated through a booster that boosts the pedal operation force to generate hydraulic pressure, a hydraulic line leading to the wheel cylinder, as well as various devices that control and assist them. In addition, there is a vulnerability inevitably having some limitations in the reliability and stability of braking performance according to the complexity of the device configuration and the use of hydraulic pressure.

Accordingly, in recent years, an electro mechanical brake (EMB), which can pursue the simplification of the device configuration that the existing hydraulic brakes do not have, and can also enhance the reliability of braking performance and implement the parking brake action, is widely used. have.

The electromechanical brake device as described above uses a motor as a power source. In order to put the electromechanical brake device into practical use, it is necessary to research and develop a boosting means to sufficiently increase the force applied by the driver to the brake pedal for braking using the motor. Do.

Matters described in this background section are prepared to enhance understanding of the background of the invention, and may include matters that are not already known to those of ordinary skill in the art to which this technology belongs.

An embodiment of the present invention is to provide a disc brake unit for a vehicle that can increase and transmit the rotational force of a driving motor to a size sufficient for braking of a vehicle by means of a gear unit comprising a driving gear and a speed increase gear.

In one or more embodiments of the present invention, in a disc brake unit for a vehicle installed inside a caliper surrounding one side of a disc for a vehicle to reduce or stop the rotational speed of the disc through a friction pad rubbed against the disc, the caliper A housing installed in the interior of a housing having an open side facing the friction pad, a fixed plate and a moving plate accommodated in the housing, a gear unit disposed inside the housing and connected to a driving motor to increase the rotational speed, the It is connected to the gear unit and one end is rotatably installed on the fixed plate, and the outer peripheral surface of the other end is a rotating shaft provided with a screw in a certain section, the other end is inserted into the other end of the rotating shaft and moves forward and backward on the screw according to the rotation of the rotating shaft. Block and the moving block are arranged to cross each other to connect the fixed plate and the moving plate, and as the moving block moves forward and backward, the friction force of the friction pad against the disk is varied through the moving plate through the moving block. It is possible to provide a disc brake unit for a vehicle including a plurality of link units.

In addition, the moving plate may be configured to be accommodated in the housing and detached from the housing through the opening of the housing by the operation of the link unit.

In addition, the gear unit includes a driving gear and a speed-up gear installed inside the housing, the drive gear is connected to the drive motor to rotate through a driving force of the drive motor, and the speed-up gear is connected to the drive gear to increase the rotational speed of the driving gear to be transmitted to the rotational shaft.

In addition, the driving gear may be characterized in that the diameter is larger than the increase gear.

In addition, the rotating shaft may be rotatably mounted to the fixed plate through a bearing.

In addition, in a state in which the central portion of the link unit is hinged to one side of the moving block, one end is mounted in the first slot of the fixed plate, the other end is mounted in the first slot of the moving plate, a first link, and a central portion In a state of being hinged to the other side of the moving block, it may include a second link having one end mounted on the second slot of the fixed plate and the other end mounted on the second slot of the moving plate.

In addition, the first link and the second link may be mounted slidably in each slot formed in the fixed plate and the moving plate by mounting rollers at both ends of the first link.

In addition, when the moving block moves forward by the forward rotation of the gear unit, both ends of the first link and the second link are gathered in the center along each slot, and the moving plate moves toward the friction pad to press the disk. can be configured to

The disc brake unit for a vehicle according to an embodiment of the present invention can generate sufficient force required for braking without increasing the overall size by applying a driving gear and a speed-up gear, so that it can be installed in a narrow space, and the weight is reduced. possible effect.

In addition, the effects obtainable or predicted by the embodiments of the present invention are to be disclosed directly or implicitly in the detailed description of the embodiments of the present invention. That is, various effects predicted according to an embodiment of the present invention will be disclosed in the detailed description to be described later.

1 is a schematic mounting view of a disc brake unit for a vehicle according to an embodiment of the present invention.
2 is a schematic perspective view of a disc brake unit for a vehicle according to an embodiment of the present invention.
3 is a partially cut-away perspective view illustrating a detailed configuration of a disc brake unit for a vehicle according to an exemplary embodiment of the present invention.
4 is a partially enlarged view of a link part applied to a disc brake unit for a vehicle according to an embodiment of the present invention.
5 is an operation diagram of a disc brake unit for a vehicle according to an exemplary embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.

In order to clearly explain the present invention, parts irrelevant to the description are omitted, and the same or similar components are described with the same reference numerals throughout the specification.

In addition, in the following description, the names of the components are divided into the first, the second, and the like, because the names of the components are the same to distinguish them, and the order is not necessarily limited thereto.

1 is a schematic mounting view of a disc brake unit for a vehicle according to an embodiment of the present invention, FIG. 2 is a schematic perspective view of a disc brake unit for a vehicle according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention FIG. 4 is a partially cut-away perspective view illustrating a detailed configuration of a disc brake unit for a vehicle according to an embodiment of the present invention, FIG. 4 is a partially enlarged view of a link unit applied to a disc brake unit for a vehicle according to an embodiment of the present invention, and FIG. 5 is an embodiment of the present invention It is an operation diagram of a disc brake unit for a vehicle according to an example.

Referring to FIG. 1 , a disc brake unit 10 for a vehicle according to an embodiment of the present invention is applied to brake a wheel of a vehicle by friction.

In other words, the vehicle disc brake unit 10 includes a caliper 5 surrounding one side of the disc 1 connected to the wheel (not shown), and is installed inside the caliper 5 and is installed on the disc 1 . It is applied to slow down or stop the rotational speed of the disk 1 through the friction pad 3 being rubbed.

The friction pad 3 is disposed on both sides of the disk 1 , and the caliper 5 is configured to simultaneously surround the friction pad 3 together with the disk 1 .

The caliper 5 is connected to the vehicle body while surrounding the disk 1 .

The disc brake unit 10 for a vehicle according to an embodiment of the present invention is mounted inside the caliper 5 as described above.

1 to 3 , the disc brake unit 10 for a vehicle includes a housing 20 , a gear unit 30 , a rotating shaft 40 , a moving block 50 , and a link unit 60 . do.

The housing 20 is installed inside the caliper 5 .

The housing 20 may be formed in a rectangular cylindrical shape having a long side and a cross-section, and the cross-sectional area is formed to have an area similar to the cross-sectional area of the friction pad 3 (cross-sectional area in the front-rear direction shown in FIG. 3 ). can be

The housing 20 has a fixed plate 23 and a moving plate 25 accommodated therein.

At this time, a first slot 23a and a second slot 23b are formed in the fixing plate 23 , and are fixed so as not to move inside the housing 20 .

The first slot 23a of the fixing plate is formed on the upper side of the fixing plate 23 based on the drawing, and the second slot 23b of the fixing plate is formed on the lower side of the fixing plate 23 .

In other words, a first slot 23a of a certain length is formed on one side of the fixing plate 23 in the vertical direction, and a second slot 23b of a certain length is formed on the other side, and the length is the same. desirable.

The first slot 23a and the second slot 23b of the fixing plate 23 are alternately disposed on the fixing plate 23 in the width direction thereof.

A first slot 25a and a second slot 25b are formed in the moving plate 25 , and are slidably mounted to the housing 20 .

For example, the moving plate 25 is slidable in the front-rear direction within the housing 20 .

The first slot 25a of the moving plate is formed on the lower side of the moving plate 25 with reference to the drawing, and the second slot 25b of the moving plate is on the upper side of the moving plate 25 . is formed in

In other words, in the moving plate 25 , a second slot 25b of a certain length is formed on one side in the vertical direction corresponding to the first slot 23a of the fixed plate 23 , A first slot 25a having a predetermined length is formed on the other side corresponding to the second slot 23b, and the length may be the same.

The first and second slots 25a and 25b of the moving plate have their width directions on the moving plate 25 to face the first and second slots 23a and 23b of the fixed plate. are staggered based on the

The moving plate 25 is configured to be accommodated in and exposed from the housing 20 through the opening 21 of the housing 20 .

The positions of the first and second slots 23a and 23b of the fixed plate and the first and second slots 25a and 25b of the moving plate formed as described above are not necessarily fixed, and depending on the arrangement of the housing, may vary.

And the gear part 30 is disposed in the first space part S1 partitioned by the fixing plate 25 inside the housing 20 and is connected to the driving motor M.

In this case, the driving motor M may be disposed outside or inside the caliper 5 .

The gear unit 30 includes a driving gear 31 and a speed increase gear 33 .

The driving gear 31 is connected to the driving motor M and rotates through the driving force of the driving motor M.

In addition, the speed-up gear 33 is connected to the driving gear 31 .

The increase gear 33 increases the rotation speed of the driving gear 31 and transmits it to the rotation shaft 40 to be described below.

The driving gear 31 has a larger diameter than the speed-up gear 33 .

That is, the number of teeth of the drive gear 31 is greater than the number of teeth of the increase gear 33 , and while the drive gear 31 rotates once, the increase gear 33 is configured to rotate multiple times.

In addition, the rotation shaft 40 is formed in a circular rod shape and is connected to the speed-up gear 33 .

The rotating shaft 40 has one end fitted to the fixing plate 23 and is rotatably installed through a bearing 43 .

In addition, the rotating shaft 40 includes a screw 41 provided in a certain section of the outer peripheral surface of the other end.

A moving block 50 is fastened to the other end of the rotating shaft 40 .

That is, the moving block 50 is disposed inside the housing 20 in the second space S2 partitioned by the fixing plate 23 while being fitted to the rotating shaft 40 .

The moving block 50 is inserted into the rotation shaft 40 and configured to move forward and backward on the screw 41 .

In other words, when the rotating shaft 40 is rotated by the gear unit 30 , the moving block 50 moves forward and backward along the screw 41 .

And the link unit 60 includes a first link 61 and a second link 63, and arranged to cross each other through the moving block 50, the fixed plate 23 and the moving plate ( 25) is connected.

First, the central portion of the first link 61 is hinged (h) coupled to one side of the moving block 50 .

One end of the first link 61 is mounted in the first slot 23a of the fixed plate 23 , and the other end is mounted in the first slot 25a of the moving plate 25 .

Referring to FIG. 4 , rollers R are mounted on both ends of the first link 61 .

These rollers (R) are mounted on both ends of the first link (61) through a connection pin (65).

In addition, the central portion of the second link 63 is hinged (h) coupled to the other side of the moving block 50 .

The second link 63, like the first link 61, one end is mounted in the second slot 23b of the fixed plate 23, the other end is the second slot (25) of the moving plate (25). 25b).

Rollers (R) are also mounted on both ends of the second link (63).

The roller (R) is mounted on both ends of the second link (63) through the connecting pins (65) in the same manner as that mounted on the first link (61).

The first and second links 61 and 63 have first and second slots 23a and 23b respectively formed in the fixed plate 23 and the moving plate 25 by mounting rollers R at their respective ends on both sides. 25a, 25b) is installed corresponding to the slot (23a, 23b, 25a, 25b) is configured to be slidably movable in each slot (23a, 23b, 25a, 25b).

Referring to FIG. 5 , in the disc brake unit 10 for a vehicle configured as described above, when the moving block 50 moves forward by the forward rotation of the gear unit 30 , the first and second links 61 , 63) are gathered at the center along each slot 23a, 23b, 25a, 25b, whereby the moving plate 25 moves to the friction pad 3 side.

Accordingly, the friction pad 3 presses the disk 1 by the moving plate 25 .

Here, in the gear unit 30, the driving gear 31 is rotated forward by the driving force of the driving motor M, and the rotation speed is increased through the increase gear 33 connected to the driving gear 31, compared to the existing one. By moving the moving plate 25 even with a small force, the friction pad 3 may operate to press the disk 1 .

On the other hand, in the vehicle disc brake unit 10, when the moving block 50 moves backward by the reverse rotation of the gear unit 30, both ends of the first and second links 61 and 63 are The moving plate 25 is accommodated in the housing 20 while being spread to both sides along each of the slots 23a, 23b, 25a, and 25b.

At this time, similarly, the gear unit 30 is reversely rotated by the driving force of the driving motor M, and the rotation speed is increased through the increase gear 33 connected to the driving gear 31, so that the moving plate is also rotated with a small force. (25) can be operated to move.

Accordingly, the disc brake unit 10 for a vehicle according to an embodiment of the present invention may increase and transmit the rotational force of the driving motor M to a sufficient size for braking the vehicle by the gear unit 30 .

That is, the disc brake unit 10 for a vehicle can generate sufficient force required for braking without increasing the overall size by applying the driving gear 31 and the speed-up gear 33, so that it can be installed even in a narrow space. It can be done, and there is an advantage of being able to reduce the weight.

Although the above has been described with reference to a preferred embodiment of the present invention, those of ordinary skill in the art can variously change the present invention within the scope without departing from the spirit and scope of the present invention described in the claims below. It will be appreciated that modifications and variations are possible.

1: Disc 3: Friction Pad
5: Caliper 10: Disc brake unit
20: housing 21: opening
23: fixing plate 23a: first slot of the fixing plate
23b: second slot of the fixed plate 25: moving plate
25a: the first slot of the moving plate 25b: the second slot of the moving plate
30: gear unit 31: drive gear
33: increase gear 40: rotation shaft
41: screw 43: bearing
50: moving block 60: link unit
61: first link 63: second link
R: Roller 65: Connection pin
h: hinge S1: first space
S2: second space

Claims (8)

A disc brake unit for a vehicle that is installed inside a caliper surrounding one side of a disc for a vehicle and decelerates or stops the rotational speed of the disc through a friction pad rubbing against the disc,
a housing installed inside the caliper and having an open side surface facing the friction pad;
a fixed plate and a moving plate accommodated in the housing;
a gear unit disposed inside the housing and connected to the driving motor to include a driving gear and a speed increase gear to increase the rotational speed;
a rotating shaft connected to the gear unit, one end of which is rotatably installed on the fixed plate, and a screw provided in a certain section of the outer circumferential surface of the other end;
a moving block inserted into the other end of the rotating shaft to move forward and backward on the screw according to the rotation of the rotating shaft; and
A plurality of intersecting pieces of the moving block are arranged to connect the fixed plate and the moving plate, and are configured to vary the friction force of the friction pad against the disk through the moving plate as the moving block moves forward and backward. link unit;
including,
The driving gear has a larger diameter than the speed-up gear, and rotates through the driving force of the connected driving motor,
The speed increase gear is connected to the rotation shaft at a rotation center thereof in a state of being connected to the driving gear, and the disk brake unit for a vehicle increases the rotation speed of the driving gear and transmits it to the rotation shaft. According to claim 1,
The moving plate
A disc brake unit for a vehicle configured to be accommodated in and separated from the housing through an opening of the housing by the operation of the link unit. delete delete According to claim 1,
The rotation axis is
A disc brake unit for a vehicle that is rotatably mounted on the fixed plate through a bearing. According to claim 1,
the link part
a first link having a central portion hinged to one side of the moving block, one end mounted in the first slot of the fixed plate, and the other end mounted in the first slot of the moving plate; and
a second link having a central part hinged to the other side of the moving block, one end mounted in the second slot of the fixed plate, and the other end mounted in the second slot of the moving plate;
A disc brake unit for a vehicle comprising a. 7. The method of claim 6,
The first link and the second link are
A disc brake unit for a vehicle in which rollers are mounted at both ends of each side to be slidably mounted within each slot formed in the fixed plate and the moving plate. 7. The method of claim 6,
When the moving block moves forward by the forward rotation of the gear unit, both ends of the first link and the second link are gathered in the center along each slot, and the moving plate moves toward the friction pad to press the disk. disc brake unit for vehicles.

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