KR102563732B1 - Monitoring unit for brake system - Google Patents

Abstract

A monitoring unit of a brake system is disclosed. The monitoring unit of the brake system according to the present embodiment includes: a coupling portion coupled to a rear surface of a pad portion advancing and retracting toward a disk; a housing fixed to the coupling part and having an inner space therein; a moving part slidably fastened to the housing and disposed passing through the pad part so that a front end faces the disk; and a wear measurement unit disposed in the inner space and connected to the moving unit to measure the wear amount of the pad unit, wherein the housing is spaced apart from the rear surface of the pad unit by a predetermined distance and fixed to the coupling unit, thereby forming the pad unit. Heat generated in the unit may be prevented from being directly transferred to the housing.

Description

Brake system monitoring unit {MONITORING UNIT FOR BRAKE SYSTEM}

The present invention relates to a monitoring unit of a brake system, and more particularly, to a monitoring unit of a brake system capable of measuring the wear of a pad part or the temperature of a disc according to use of a brake.

The caliper brake may implement parking braking or stopping braking by pressing the disk through a pad or the like to prevent the disk from rotating. 1 is a schematic diagram showing a general caliper brake.

Referring to FIG. 1 , the caliper brake may include a pair of pad plates 11 and 12 that advance and retreat toward the disc D. The pair of pad plates 11 and 12 are provided with an inner pad plate 11 and an outer pad plate 12, and friction pads 11a and 12a are provided on the inner surfaces of the pair of pad plates 11 and 12. can be attached. A pair of pad plates 11 and 12 may be installed in a carrier (not shown) to be retractable.

The caliper housing 20 is slidably installed on a carrier (not shown), and a cylinder portion 22 in which the piston 30 is installed to move forward and backward by means of braking hydraulic pressure may be provided. The caliper housing 20 may include a finger portion 21 that presses the outer pad plate 12 when brake braking is implemented, and a bridge portion 23 that connects the finger portion 21 and the cylinder portion 22. . The sealing part (S) is provided on the inner circumferential surface of the cylinder part 22, and seals between the outer circumferential surface of the piston part 30 and the inner circumferential surface of the cylinder part 22 so that the braking hydraulic pressure does not leak even when the piston part 30 advances and retreats. And, when the piston unit 30 retreats, it can assist the piston unit 30 to roll back to some extent. Meanwhile, in the caliper brake, brake oil is supplied from a master cylinder (not shown) through an oil port 22a formed in the cylinder part 22 so that hydraulic pressure for braking can be applied to the inside of the cylinder part 22 of the caliper housing 20. can be infiltrated.

Meanwhile, the friction pads 11a and 12a attached to the pair of pad plates 11 and 12 may wear out due to repeated use of the brake. In this way, when the friction pads 11a and 12a are continuously worn, there is a problem in that brake braking performance is deteriorated, and furthermore, driving stability of the vehicle is also deteriorated.

In order to solve this problem, conventional caliper brakes are equipped with devices that simply measure the degree of wear of friction pads. However, when the friction pad is worn over a certain thickness, these devices generate noise by scratching the disk or the electric wire is disconnected by the disk to notify that the friction pad is worn over a certain thickness.

However, these have a problem in that it is difficult to determine how much the current friction pad is worn, and accordingly, it is not easy to determine when to replace the friction pad and the pad plate.

Registered Patent Publication No. 10-1783168 (registered on September 22, 2017)

The problem to be solved by the present invention is to provide a monitoring unit of a brake system capable of measuring the wear of a pad part or the temperature of a disk according to brake use.

The monitoring unit of the brake system of the present invention for solving the above problems includes: a coupling part coupled to a rear surface of a pad part advancing and retreating toward a disc; a housing fixed to the coupling part and having an inner space therein; a moving part slidably fastened to the housing and disposed passing through the pad part so that a front end faces the disk; and a wear measurement unit disposed in the inner space and connected to the moving unit to measure the wear amount of the pad unit, wherein the housing is spaced apart from the rear surface of the pad unit by a predetermined distance and fixed to the coupling unit, thereby forming the pad unit. Heat generated in the unit may be prevented from being directly transferred to the housing.

The wear measuring unit may include: a knob moving together with the moving unit; and a variable resistor to which the knob is slidably coupled and whose resistance value is changed according to the movement of the knob.

A heat-resistant connection part made of a thermosetting material connecting the moving part and the knob may be further included.

The heat-resistant connecting part may further include a waterproof packing part connected to a rear end of the moving part and provided at a point where the moving part and the heat-resistant connecting part are connected.

The housing includes a body portion in which the inner space is formed and a wing portion extending outward from a rear end of the body portion, and the coupling portion includes a bolt passing through the wing portion and coupled to a rear surface of the pad portion and a front end of the wing portion. And it may include a pair of nuts fastened to the bolt at the rear end.

It may further include a heat-resistant washer part made of a thermosetting material interposed between at least one of the pair of nuts and the wing part.

It may further include a temperature measurement unit inserted into the moving unit and exposed toward the disk to measure the temperature of the disk.

The moving unit has a hollow cylindrical shape and is inserted into a first through hole formed in the housing, and the temperature measuring unit is inserted into the moving unit and compresses the moving unit from the outside to the inside to measure the temperature. A part may be fixed to the moving part.

The housing may further include a side pressing part having a second through hole communicating with the first through hole, inserted into the second through hole, and pressurizing the moving part from the side.

It may further include a sealing part interposed between the first through hole and the moving part.

A terminal of the wear measurement unit is connected to the substrate unit for closing the rear portion of the housing; may further include.

The substrate part may be disposed parallel to the rear surface of the pad part.

A gasket interposed between the housing and the substrate portion may be further included.

The monitoring unit of the brake system according to an embodiment of the present invention can determine the degree of wear of the pad part according to the use of the brake in real time.

The monitoring unit of the brake system according to an embodiment of the present invention may calculate an appropriate pressure for implementing parking braking by measuring the temperature of the disc.

1 is a schematic diagram showing a general caliper brake.
2 is a perspective view showing a monitoring unit of a brake system according to an embodiment of the present invention.
3 shows a monitoring unit of a brake system according to an embodiment of the present invention, and is a perspective view viewed from a direction different from that of FIG. 2 .
4 to 5 are cross-sectional views of a monitoring unit of a brake system according to an embodiment of the present invention.
6 is an exploded view of a monitoring unit of a brake system according to an embodiment of the present invention.
7 is a diagram illustrating a variable resistor of a wear measurement unit according to an embodiment of the present invention.
8 is a diagram illustrating a moving unit and a temperature measurement unit according to an embodiment of the present invention.
9 is a diagram of a monitoring unit of a brake system according to another embodiment of the present invention.
10 is a diagram of a monitoring unit of a brake system according to another embodiment of the present invention.

Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings, but the same or similar elements are given the same reference numerals regardless of reference numerals, and redundant description thereof will be omitted. In addition, in describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiment disclosed in this specification, the detailed description thereof will be omitted.

Terms including ordinal numbers, such as first and second, may be used to describe various components, but the components are not limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, each step described can be performed regardless of the listed order, except for the case where it must be performed in the listed order due to a special causal relationship.

In this application, terms such as "comprise" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

1 to 5, the monitoring unit 100 of the brake system according to the embodiment of the present invention includes a coupling part 110, a housing 120, a moving part 130, and a wear measurement unit 140. ), a temperature measuring unit 151 and a substrate unit 180 may be included.

The coupling portion 110 may be coupled to rear surfaces of the pad portions 11 and 11a that advance and retreat toward the disk D. The pad parts 11 and 11a may include a pad plate 11 and a friction pad 11a. A friction pad 11a may be attached to the front surface of the pad plate 11 . The coupling part 110 may be coupled to the rear surface of the pad plate 11 among the pad parts 11 and 11a. Referring to FIGS. 1 and 2 , as an example, the coupling part 110 may be coupled to the rear surface of the inner pad plate 11 of the pad plate 11, but the present embodiment is not limited thereto, and the pad plate 11 It may also be coupled to the rear surface of the outer pad plate 12 . Hereinafter, for convenience of description, a case in which the coupling part 110 is coupled to the rear surface of the inner pad plate 11 will be described as an example.

For example, the coupling part 110 may be composed of a bolt 111 and a nut 112 as shown. However, the coupling part 110 according to the embodiment of the present invention is not limited thereto, and the housing 120 is a bracket or other mechanical element that fixes its position in a state where the housing 120 is spaced apart from the back surface of the pad parts 11 and 11a. may be provided. Hereinafter, for convenience of explanation, a case in which the coupling part 110 is composed of a bolt 111 and a nut 112 will be described as an example.

Referring to FIGS. 2 and 3 , a total of four coupling units 110 may be provided, but the present embodiment is not limited thereto and the number of coupling units 110 may be variously provided as needed. Hereinafter, for convenience of explanation, the coupling unit 110 will be described based on one coupling unit 110 .

The coupling part 110 may include a bolt 111 and a pair of nuts 112 . The bolt 111 of the coupling part 110 may pass through the wing part 122 of the housing 120 and be coupled to the rear surfaces of the pad parts 11 and 11a. Specifically, the bolt 111 of the coupling part 110 may be coupled to the rear surface of the pad plate 11 . The bolt 111 and the pair of nuts 112 of the coupling part 110 may be made of stainless steel having relatively low thermal conductivity, but are not limited thereto.

A pair of nuts 112 of the coupling part 110 may be fastened to the bolt 111 at the front and rear ends of the wing 122 of the housing 120 . Specifically, the pair of nuts 112 restrain the front and rear ends of the wing portions 122 of the housing 120, so that the housing 120 can maintain a spaced state from the rear surface of the pad plate 11.

Referring to FIGS. 3 and 4 , the housing 120 is fixed to the coupling part 110 and an inner space 121a may be formed. The position of the housing 120 is fixed by being fixed to the coupling part 110, and the inner space 121a is formed so that the wear measuring unit 140 can be embedded in the inner space 121a.

The housing 120 may be fixed to the coupling part 110 by being spaced apart from the rear surfaces of the pad parts 11 and 11a by a predetermined distance. Looking more specifically, the position of the housing 120 may be fixed in a state of being spaced apart from the rear surface of the pad plate 11 by the coupling part 110 .

The temperature of the pad parts 11 and 11a composed of the friction pad 11a and the pad plate 11 may increase due to repeated use of the brake. If the housing 120 is directly coupled to the rear surface of the pad plate 11, high heat generated in the pad parts 11 and 11a according to brake use can be directly transferred to the housing 120. In this case, when the high heat generated in the pad parts 11 and 11a is directly transmitted to the housing 120, there is a problem that the wear measuring unit 140 built in the housing 120 may be damaged by the high heat. .

In the monitoring unit 100 of the brake system according to the present invention, the housing 120 may be fixed to the coupling part 110 by being spaced apart from the rear surfaces of the pad parts 11 and 11a by a predetermined distance. Accordingly, heat generated in the pad parts 11 and 11a may be prevented from being directly transmitted to the housing 120 . Therefore, the monitoring unit 100 of the brake system according to the embodiment of the present invention has an effect of preventing the wear measuring unit 140 built in the housing 120 from being damaged despite repeated use of the brake. .

The housing 120 may include a body portion 121 and wing portions 122 . The body portion 121 of the housing 120 has an inner space 121a, and the wear measurement unit 140 may be embedded in the inner space 121a as described above.

The wing portion 122 of the housing 120 may extend outward from the rear end of the body portion 121 . As shown in FIG. 3 , a pair of wings 122 may be provided, but the number of wings 122 is not limited thereto and may be provided in various numbers. As the coupling part 110 is fastened to the wing part 122 of the housing 120, the position of the housing 120 can be fixed in a state where the housing 120 is spaced apart from the rear surface of the pad plate 11.

Referring to FIG. 4 , the moving unit 130 may be slidably coupled to the housing 120 . The moving part 130 may be disposed passing through the pad parts 11 and 11a so that the front end faces the disk. As an example, the moving unit 130 may be provided in the shape of a hollow cylinder, but is not limited thereto and may be provided in the shape of a polygonal column. The moving unit 130 may be inserted into the first through hole 121b formed in the housing 120 .

The front end of the movable part 130 passes through the pad parts 11 and 11a and is disposed toward the disk, and the rear end of the movable part 130 is inserted into the inner space 121a of the body 121 of the housing 120. It can be. The position of the movable part 130 is fixed in the radial direction by the first through hole 121b of the housing 120, so that the friction pad 11a can be retracted according to wear.

Referring to FIG. 4 , the housing 120 may have a second through hole 121c communicating with the first through hole 121b. The monitoring unit 100 of the brake system according to the embodiment of the present invention may further include a side pressing part 152 . The side pressing part 152 is inserted into the second through hole 121c and can press the moving part 130 from the side. As an example, the side pressing part 152 may be screwed into the second through hole 121c. Accordingly, the moving part 130 is pressed by the side pressing part 152, so that the frictional force formed by the side pressing part 152 acts. A detailed description of this will be described later.

The wear measuring unit 140 may be disposed in the inner space 121a of the body 121 of the housing 120 . The wear measurement unit 140 may be connected to the moving unit 130 to measure the amount of wear of the pad units 11 and 11a. As an example, the wear measuring unit 140 may be provided with a knob 141 and a variable resistor 142 .

The knob 141 may move together with the moving unit 130 . The knob 141 is slidably coupled to the variable resistor 142, and a resistance value may be changed according to the movement of the knob 141. The variable resistor 142 is an element of an electric circuit and is a resistor capable of varying the current flowing in the circuit within a predetermined range. Since the variable resistor 142 is a well-known component, a detailed description thereof will be omitted.

The variable resistor 142 may be provided as, for example, a linear type variable resistor 142 . The linear type variable resistor 142 may have a circuit diagram of the type shown in FIG. 7 . Referring to FIG. 7 , a case in which the variable resistor 142 is provided as a linear type variable resistor 142 will be described. When the moving part 130 and the knob 141 coupled thereto slide, the reference numeral "(2)" terminal connected to the knob 141 moves together, and the reference numeral "(1)" terminal and the reference numeral "( 2) The resistance value can be changed between the " terminals. In this case, when a constant voltage is applied between the reference numeral "(1)" terminal and the "(2)" terminal, as the reference numeral "(2)" terminal moves, the reference numeral "(1)" terminal and "( 2) "The current flowing between the terminals can be changed. That is, it is possible to determine how much the pad parts 11 and 11a are worn by measuring the ratio of the current value reduced according to the movement of the “(2)” terminal according to the movement of the knob 141 . Meanwhile, the variable resistance value of the variable resistor 142 may be changed according to temperature. At this time, the variable resistance value does not change as intended due to the high heat transmitted from the disk, so it may be difficult to accurately determine the degree of wear of the pad parts 11 and 11a. To solve this problem, a constant voltage is applied between the "(1)" terminal and the "(3)" terminal, and the pad part is measured through the voltage value measured at the "(2)" terminal according to the movement of the "(2)" terminal. A method of determining the wear amount of (11, 11a) is also possible. In this configuration, the monitoring unit 100 of the brake system according to the embodiment of the present invention measures the change value of the voltage applied to the variable resistor 142, so that the pad parts 11 and 11a are not affected by the temperature change. It can measure whether it is worn or not.

On the other hand, since the moving part 130 passes through the pad parts 11 and 11a and faces the disk, it can be directly heated by the disk or indirectly according to the heating of the pad parts 11 and 11a. there is. In this case, if heat is transferred to the knob 141 through the moving unit 130, the knob 141 may be damaged or the variable resistor 142 connected to the knob 141 may be damaged. In order to prevent this, the monitoring unit 100 of the brake system according to the embodiment of the present invention may further include a heat resistance connection unit 160 .

The heat resistance connection unit 160 may connect the moving unit 130 and the knob 141 . Looking more specifically, the heat resistant connector 160 may be made of a thermosetting resin. Accordingly, the moving part 130 and the knob 141 are indirectly connected through the heat-resistant connection part 160, and the moving part 130 and the knob 141 are not directly connected. Since the heat resistant connector 160 is made of a thermosetting material that can withstand high temperatures, damage to the heat resistant connector 160 can be prevented even when heat is transferred by the moving unit 130 . In addition, since the knob 141 is indirectly connected to the moving part 130 through the heat-resistant connection part 160, direct transfer of heat to the knob 141 through the moving part 130 is prevented, and thus the knob 141 and the variable resistor 142 connected to the knob 141 can be prevented from being damaged.

The heat resistant connector 160 may be connected to the rear end of the moving unit 130 . Looking more specifically, the heat resistance connector 160 may be inserted into the moving part 130 from the rear end of the moving part 130 . Referring to FIG. 6, the heat-resistant connection unit 160 includes a body 162 having a through portion (reference numeral not shown) into which the knob 141 of the wear measuring unit 140 is inserted, and extending from the body 162 in one direction. It may be composed of an insertion pin 161 inserted into the rear end of the moving unit 130.

Referring to FIG. 4 , the monitoring unit 100 of the brake system according to the embodiment of the present invention may further include a waterproof packing part P. The waterproof packing part P may be provided at a point where the moving part 130 and the heat resistant connection part 160 are connected. Specifically, a waterproof packing part P may be provided between the heat resistant connection part 160 and the inner circumferential surface of the moving part 130 in a state where the heat resistant connection part 160 is inserted into the rear end of the moving part 130 . As an example, the waterproof packing part P may be provided with a high-temperature silicon bond, but is not limited thereto. Since the waterproof packing part P is provided, the rear end of the moving part 130 can be sealed by the heat-resistant connection part 160 and the waterproof packing part P. Accordingly, inflow of water or foreign matter into the inner space 121a of the housing 120 along the inner space 121a of the moving unit 130 may be fundamentally blocked.

The temperature measurement unit 151 may be inserted into the front end of the moving unit 130 . The temperature measurement unit 151 may be exposed toward the disk by being inserted into the front end of the moving unit 130, and the temperature measurement unit 151 may measure the temperature of the disk. The temperature measuring unit 151 may be provided as a thermocouple, but is not limited thereto. As an example, the temperature measuring unit 151 may be provided as a thermocouple having a copper cap, but is not limited thereto.

By providing the temperature measurement unit 151, the monitoring unit 100 of the brake system according to the present invention can measure the temperature of the disc. Referring to FIG. 8 , the temperature measurement unit 151 may be inserted into the moving unit 130 . At this time, in a state where the temperature measurement unit 151 is inserted into the moving unit 130, the moving unit 130 is compressed from the outside to the inside so that the temperature measurement unit 151 is attached to the moving unit 130. can be fixed That is, while the temperature measuring unit 151 is inserted into the front end of the moving unit 130, the moving unit 130 is compressed (compression 130a in FIG. can be fixed

Meanwhile, a plurality of through holes 131 may be formed in the front portion of the moving unit 130 . The plurality of through holes 131 of the movable unit 130 may be provided in a hole shape penetrating the outer and inner circumferential surfaces of the movable unit 130 . At this time, since the plurality of through holes 131 are formed, the moving part 130 may have an end portion where the through holes 131 are formed smaller than other portions. Accordingly, the portion of the moving unit 130 where the through hole 131 is formed has a lower heat transfer rate than other portions. Therefore, transfer of high heat from the disk and pad parts 11 and 11a to the knob 141 through the moving part 130 can be alleviated to some extent.

On the other hand, although not shown, the temperature measurement unit 151 is provided with a signal line (not shown) and is connected to the substrate unit 180, so that the temperature measured by the copper cap is measured by the substrate unit 180 and the control unit 181 interlocking therewith. can be sent to

The monitoring unit 100 of the brake system according to the embodiment of the present invention may further include a substrate portion 180 . The substrate unit 180 may be connected to the terminal 143 of the wear measuring unit 140 . In addition, the signal line of the temperature measurement unit 151 may be connected to the substrate unit 180 . The substrate part 180 may close the rear part of the housing 120 . The board unit 180 may be provided as an example, a PCB board.

The substrate portion 180 may be disposed parallel to the rear surfaces of the pad portions 11 and 11a. Looking more specifically, the substrate portion 180 may be disposed parallel to the rear surface of the pad plate 11 . As such, the substrate unit 180 is disposed parallel to the rear surfaces of the pad units 11 and 11a and closes the rear portion of the housing 120, thereby miniaturizing the monitoring unit 100 of the brake system in a limited space. In addition, since the rear portion of the housing 120 is closed through the substrate portion 180, which is not a separate member, the number of parts used is reduced compared to the case where the rear portion of the housing 120 is closed with a separate member. .

The control unit 181 may be connected to the rear surface of the substrate unit 180 . In the case of the present invention, a controller 181 is provided. The controller 181 according to an exemplary embodiment of the present invention may include a non-volatile memory (not shown) configured to store data related to an algorithm configured to control the operation of various components or software instructions for reproducing the algorithm, and the corresponding memory It may be implemented through a processor (not shown) configured to perform an operation described below using data stored in . Here, the memory and the processor may be implemented as individual chips. Alternatively, the memory and processor may be implemented as a single chip integrated with each other. A processor may take the form of one or more processors.

The control unit 181 may receive information about the amount of wear of the pad parts 11 and 11a from the wear measurement unit 140 connected to the substrate unit 180 by being connected to the substrate unit 180, and display module or speaker. Through the module, information on the amount of wear can be provided to managers or drivers. The control unit 181 is connected to the temperature measuring unit 151, so that it can receive information about the temperature of the disc from the temperature measuring unit 151.

Hereinafter, a process in which the monitoring unit 100 of the brake system according to an embodiment of the present invention measures the amount of wear of the pad parts 11 and 11a or the temperature of the disc will be described.

First, a process of measuring the wear amount of the pad parts 11 and 11a will be described. When the friction pad 11a and the pad plate 11 are repeatedly moved forward and backward, the front surface of the friction pad 11a in contact with the disk is gradually worn and the thickness of the friction pad 11a gradually becomes thinner. At this time, the moving part 130 disposed through the pad parts 11 and 11a is positioned on the front surface of the friction pad 11a when the friction pad 11a contacts the disk as the friction pad 11a becomes thinner. retreat until As an example, as shown in FIG. 5 , when the friction pad 11a becomes as thin as “l1”, the moving part 130 retreats to the front surface of the worn friction pad 11a.

In this case, the moving unit 130 and the knob 141 disposed as shown in FIG. 4 may be rearranged and slid to have the arrangement shown in FIG. 5 . At this time, in the wear measurement unit 140 connected to the knob 141, the resistance value of the variable resistor 142 provided in the wear measurement unit 140 is changed, and the current value flowing through the variable resistor 142 is changed. . At this time, the control unit 181 connected to the variable resistor 142 may determine how much the friction pad 11a is worn according to the value of the current flowing through the variable resistor 142, and inform the driver or manager of this.

Meanwhile, in the moving unit 130 , some of the side surfaces of the moving unit 130 may be pressed by the side pressing unit 152 . Accordingly, frictional force may be applied to the side of the moving unit 130 by the side pressing unit 152 . At this time, the following advantages can be obtained by appropriately adjusting the size of the frictional force formed by the side pressing part 152 . First of all, the friction force formed by the side pressing part 152 allows the moving part 130 to have a fixed position even while driving the vehicle. Vibration may occur in the moving unit 130 or other equipment according to vehicle driving conditions or road conditions. The position of the moving unit 130 may be fixed by the frictional force formed by the side pressing unit 152 even when vibration occurs. Accordingly, the movable part 130 moves forward due to vibration during vehicle driving and hits the disk, or the movable part 130 retreats and the front end of the movable part 130 is inserted into the pad parts 11 and 11a. that can be prevented

Meanwhile, when the external force applied to the moving unit 130 is greater than the frictional force formed by the side pressing unit 152, the moving unit 130 may be retracted. For example, as the pad parts 11 and 11a are worn, the front end of the moving part 130 is positioned forward of the front surface of the pad parts 11 and 11a. At this time, since the pad parts 11 and 11a need to move forward until they come into contact with the disc in order to implement brake braking, the moving part 130 has a front end of the moving part 130 that is the same as the front surface of the pad parts 11 and 11a. It will be pressed by the disc until placed into position. Therefore, since the external force applied to the movable part 130 by the disk is greater than the frictional force, the movable part 130 has the front end of the movable part 130 at the same position as the front surface of the pad parts 11 and 11a. It will be retreated until deployed. Thereafter, when the front end of the movable part 130 is disposed at the same position as the front surface of the pad parts 11 and 11a, the external force applied to the movable part 130 by the disk disappears, so the movable part 130 moves along the side surface. The position is fixed by the frictional force formed by the pressing part 152 .

When the front end of the movable part 130 is disposed at the same position as the front surface of the pad parts 11 and 11a, the position of the movable part 130 is fixed until the pad parts 11 and 11a are additionally worn.

Since the monitoring unit 100 of the brake system according to the embodiment of the present invention can check the degree of wear of the friction pad 11a in real time, it has the advantage of being able to easily determine when to replace the pad parts 11 and 11a. .

In addition, a process of measuring the temperature of the disk will be described. When brake braking is implemented, the moving unit 130 and the temperature measurement unit 151 inserted into the moving unit 130 come into contact with the disk. In this case, a braking force is applied to the disc by the frictional force formed by the friction pad 11a, and the temperature of the disc rises at the same time. At this time, if the temperature of the disk is excessively increased, the friction coefficient of the friction pad 11a becomes lower than when the temperature of the disk is low. In this case, since the friction coefficient of the friction pad 11a is lowered, the friction pad 11a must strongly press the disc to realize parking braking. The temperature measurement unit 151 according to an embodiment of the present invention may measure the temperature of the disk. The temperature of the disk measured by the temperature measuring unit 151 may be provided to the controller 181 . The control unit 181 determines that the friction coefficient of the friction pad 11a drops when the temperature of the disk is higher than a preset value, and increases the amount of brake oil introduced from the master cylinder to the oil port when parking braking is implemented. . Accordingly, the piston unit strongly presses the pad units 11 and 11a, and since the friction pad 11a presses the disc more strongly, stable parking braking can be realized.

Hereinafter, the monitoring unit 100 of the brake system according to another embodiment of the present invention will be described.

Referring to FIG. 9 , the monitoring unit 100 of the brake system according to the present invention may further include a sealing part 193 interposed between the first through hole 121b and the moving part 130 . Specifically, the sealing part 193 may be provided as an O-ring 193 provided in the insertion groove 121b-1 formed on the inner circumferential surface of the first through hole 121b. Accordingly, since the sealing part 193 seals between the inner circumferential surface of the first through hole 121b and the outer circumferential surface of the moving part 130, introduction of foreign substances or water into the housing 120 can be prevented. .

Hereinafter, the monitoring unit 100 of the brake system according to another embodiment of the present invention will be described.

Referring to FIG. 10 , the monitoring unit 100 of the brake system according to the embodiment of the present invention may further include a heat resistant washer unit 191. The heat-resistant washer part 191 may be interposed between at least one of the pair of nuts 112 of the coupling part 110 and the wing part 122, and may be made of a thermosetting material. As shown in FIG. 10 , the heat resistant washer part 191 may be interposed between the nut 112 located at the front end of the pair of nuts 112 and the wing part 122, but is not limited thereto. Since the heat-resistant washer part 191 is made of a thermosetting material, it is not easily deformed by heat transmitted through the bolt 111 and the nut 112, and the bolt 111 and the nut 112 are directly attached to the wings of the housing 120. It may be indirectly contacted through the heat resistant washer portion 191 without contacting the portion 122 . Accordingly, since heat can be prevented from being directly transferred to the wing portion 122 of the housing 120 through the coupling portion 110, the wear measurement unit 140 provided inside the housing 120 is affected by heat. Damage can be prevented.

Referring to FIG. 10 , the monitoring unit 100 of the brake system according to another embodiment of the present invention may further include a gasket 192 . The gasket 192 may be interposed between the housing 120 and the substrate unit 180 . The gasket 192 is interposed between the housing 120 and the substrate 180 to prevent foreign matter or water from being introduced into the housing 120 through a gap between the housing 120 and the substrate 180. have an effect

The technical features disclosed in each embodiment of the present invention are not limited to the corresponding embodiment, and unless incompatible with each other, the technical features disclosed in each embodiment may be merged and applied to other embodiments.

Therefore, in each embodiment, each technical feature is mainly described, but each technical feature may be merged and applied to each other unless incompatible with each other.

The present invention is not limited to the above-described embodiments and accompanying drawings, and various modifications and variations will be possible from the viewpoint of those skilled in the art to which the present invention belongs. Therefore, the scope of the present invention should be defined by not only the claims of this specification but also those equivalent to these claims.

100: monitoring unit of the brake system
110: coupling part 111: bolt
112: nut 120: housing
121: body portion 121a: inner space
121b: first through hole 121c: second through hole
122: wing part 130: moving part
140: wear measuring unit 141: knob
142: variable resistor 151: temperature measuring unit
152: side pressing part 160: heat-resistant connection part
180: board unit 181: control unit
191: heat resistant washer part 192: gasket
193: sealing part

Claims (13)

a coupling portion coupled to the rear surface of the pad portion advancing and retracting toward the disk;
a housing fixed to the coupling part and having an inner space therein;
a moving part slidably fastened to the housing and disposed passing through the pad part so that a front end faces the disk; and
A wear measurement unit disposed in the inner space and connected to the moving unit to measure the wear amount of the pad unit;
the housing,
It is spaced apart from the rear surface of the pad part by a predetermined distance and fixed to the coupling part, and includes a body part in which the inner space is formed and a wing part extending outward from the rear end of the body part,
The coupling part,
The monitoring unit of the brake system comprising a bolt coupled to a rear surface of the pad unit through the wing unit and a pair of nuts fastened to the bolt at front and rear ends of the wing unit. According to claim 1,
The wear measuring unit,
a knob that moves together with the moving unit; and
A monitoring unit of a brake system, characterized in that provided with a variable resistor to which the knob is slidably coupled and whose resistance value is changed according to the movement of the knob. According to claim 2,
The monitoring unit of the brake system further comprising a heat-resistant connection part made of a thermosetting material connecting the moving part and the knob. According to claim 3,
The heat-resistant connection part,
It is connected to the rear end of the moving part,
The monitoring unit of the brake system further comprising a waterproof packing part provided at a point where the moving part and the heat-resistant connection part are connected. delete According to claim 1,
The monitoring unit of the brake system of claim 1, further comprising a heat-resistant washer made of a thermosetting material interposed between at least one of the pair of nuts and the wings. According to claim 1,
The monitoring unit of the brake system of claim 1 , further comprising a temperature measuring unit inserted into the moving unit and exposed to the disc to measure the temperature of the disc. According to claim 7,
The moving part,
It has a hollow cylindrical shape and is inserted into a first through hole formed in the housing,
The temperature measuring unit,
The monitoring unit of the brake system according to claim 1 , wherein the temperature measurement unit is inserted into the moving unit and fixed to the moving unit by compressing the moving unit from an outer direction toward an inward direction. According to claim 8,
the housing,
A second through hole communicating with the first through hole is formed;
The monitoring unit of the brake system according to claim 1 , further comprising a side pressing part inserted into the second through hole and pressurizing the moving part from the side. According to claim 8,
The monitoring unit of the brake system further comprising a; sealing part interposed between the first through hole and the moving part. According to claim 1,
The monitoring unit of the brake system, characterized in that it further comprises a; substrate portion to which the terminal of the wear measurement unit is connected, and to close the rear portion of the housing. According to claim 11,
The board part,
The monitoring unit of the brake system, characterized in that disposed in parallel with the rear surface of the pad portion. According to claim 11,
The monitoring unit of the brake system, further comprising a gasket interposed between the housing and the substrate.