KR102687107B1 - Brake Disc Assembly - Google Patents

Abstract

The present invention includes a hub including a coupling portion coupled to an axle and an extension portion extending radially along a radial direction from the outer edge of the coupling portion; a disk rotor including a front disk spaced apart on one side and a rear disk spaced apart on the other side around an end of the extension portion; and a plurality of ribs respectively coupled to a plurality of first slits formed along a radial direction on the front disk and a second slit formed on the rear disk to correspond to the first slit, and connected to the extension portion. It provides a brake disc assembly comprising a.
In addition, the present invention includes a hub including a coupling portion coupled to the axle and an extension portion bent and wrapped around the outside of the coupling portion; a disk rotor disposed outside the extension portion and including a front disk and a rear disk disposed to face each other side by side; and a plurality of ribs respectively coupled to a plurality of first slits formed along a radial direction on the front disk and a second slit formed on the rear disk to correspond to the first slit, and connecting the extension portions. It provides a brake disc assembly comprising a.

Description

Brake Disc Assembly {Brake Disc Assembly}

The present invention relates to a brake disc assembly, and more specifically, to a brake disc assembly capable of providing braking force through a caliper provided on a vehicle wheel.

In general, cars can drive at high speeds, so various systems are being developed to ensure the safety of drivers and/or passengers. Among these stabilizers, the brake system is the most basic and important system that provides braking force to a driving car.

Looking at the brake disc of the aforementioned automobile brake system, it generally includes a hub connected to the wheel of the automobile and a disk rotor connected to the hub. In the case of these brake discs, they are manufactured by coupling a disc rotor to both sides of a hub. This brake disc structure appears in Korean Patent Publication No. 10-2013-0061246.

However, the above-described brake disc structure is pointed out to have problems such as reduced durability or frequent replacement cycles due to problems such as NVH (Noise, Vibration, Harshness) when driving the vehicle due to problems with brake disc dust scattering and rust generation due to corrosion.

Korean Patent Publication No. 10-2013-0061246 (2013.06.11)

The present invention is intended to solve this problem, and more specifically, the purpose of the present invention is to provide a brake disc assembly that can actively cope with thermal deformation by combining a plurality of ribs between the front and rear discs and simultaneously connecting them to the hub. There is.

The present invention to solve this problem includes a hub including a coupling portion coupled to the axle and an extension portion extending radially along a radial direction from the outer edge of the coupling portion; a disk rotor including a front disk spaced apart on one side and a rear disk spaced apart on the other side around an end of the extension portion; and a plurality of ribs respectively coupled to a plurality of first slits formed along a radial direction on the front disk and a second slit formed on the rear disk to correspond to the first slit, and connected to the extension portion. It provides a brake disc assembly comprising a.

The ribs include a plurality of first ribs coupled to the first slit and the second slit and connected to the extension portion, and a second rib disposed adjacent to the first rib and coupled only to the first slit and the second slit. It includes, and the first rib and the second rib may be arranged alternately with each other along the circumferential direction of the disk rotor.

The extension portion may include a plurality of connecting members protruding to correspond to each of the first ribs, and a connecting groove into which an end of the first rib is inserted between the connecting members.

The first rib and the second rib each include a first protrusion inserted into the first slit and a second protrusion inserted into the second slit, and the first rib is inserted into the connection groove to form the connection member. It may include a third protrusion arranged to intersect.

In addition, the present invention includes a hub including a coupling portion coupled to the axle and an extension portion bent and wrapped around the outside of the coupling portion; a disk rotor disposed outside the extension portion and including a front disk and a rear disk disposed to face each other side by side; and a plurality of ribs respectively coupled to a plurality of first slits formed along a radial direction on the front disk and a second slit formed on the rear disk to correspond to the first slit, and connecting the extension portions. It provides a brake disc assembly comprising a.

The ribs include a plurality of first ribs coupled to the first slit and the second slit and inserted into the extension portion, and a second rib disposed adjacent to the first rib and coupled only to the first slit and the second slit. It includes, and the first rib and the second rib may be arranged alternately with each other along the circumferential direction of the disk rotor.

The extension may include a connection hole to which the first rib is connected, and a heat dissipation hole disposed to communicate at least partially with a heat dissipation flow path formed on both sides of the disc rotor around the second rib.

The first rib and the second rib each include a first protrusion inserted into the first slit and a second protrusion inserted into the second slit, and the first rib includes a third protrusion inserted into the connection hole. May include wealth.

The first rib may be formed to be wider than the third protrusion in the area where the third protrusion starts and may include a step that limits the depth at which the third protrusion is inserted into the connection hole.

According to the brake disc assembly according to an embodiment of the present invention,

First, the weight of the brake disc assembly can be reduced as the hub and disc rotor are changed from a casting manufacturing method to an assembled structure. In addition, the conventional casting method required post-processing, but post-processing is not necessary.

Second, because only the first rib among the ribs is connected to the extension, the heat transfer path can be reduced by 50%.

Third, the joint structure of the extension and the first rib is connected by simple assembly without attachment or welding, thereby cutting the heat conduction path once in the middle, thereby significantly reducing the rate of thermal strain due to heat conduction and actively responding to thermal deformation. can,

Fourth, since it is possible to restore the original assembled state after cooling, it prevents plastic deformation from occurring due to accumulation of thermal deformation, thereby reducing vibration and noise due to uneven wear of the disk rotor, and in addition, the maintenance period is significantly longer.

Fifth, the manufacturing process time can be expected to be significantly reduced compared to the conventional casting method.

1 is a perspective view showing a brake disc assembly according to an embodiment of the present invention.
Figure 2 is a side view showing the brake disc assembly according to the first embodiment of the present invention.
Figure 3 is an exploded perspective view showing the brake disc assembly shown in Figure 2.
FIG. 4 is a cross-sectional view showing the center area of the brake disc assembly shown in FIG. 2 cut away.
FIG. 5 is a reference diagram showing a state in which the first rib and the second rib are respectively coupled in the brake disc assembly shown in FIG. 2.
Figure 6 is an exploded perspective view showing the brake disc assembly according to the second embodiment of the present invention.
FIG. 7 is a cross-sectional view showing the central area of the brake disc assembly shown in FIG. 6 cut away.
FIG. 8 is a reference diagram showing the coupled state of the first rib and the disposed state of the second rib in the brake disc assembly shown in FIG. 6.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Unless otherwise specified, all terms in this specification have the same general meaning as understood by a person skilled in the art to which the present invention pertains, and if a term used in this specification conflicts with the general meaning of the term, follows the definitions used in this specification. Meanwhile, the configuration or control method of the device described below is only for explaining the embodiments of the present invention and is not intended to limit the scope of the present invention, and the same reference numbers used throughout the specification refer to the same components. represents them.

Hereinafter, a brake disc assembly according to an embodiment of the present invention will be examined in detail with reference to the drawings.

1 is a perspective view showing a brake disc assembly according to an embodiment of the present invention.

Referring to FIG. 1, a brake disc assembly 1 according to an embodiment of the present invention includes a hub 100, a disc rotor 200, and a rib 300.

First, the hub 100 includes a coupling portion 110 coupled to an axle (not shown) and an extension portion 120 extending outward from the coupling portion 110. The hub 100 may be made of nodular cast iron (FCD material) or aluminum. The hub 100 is preferably made of a material that has relatively high mechanical properties such as tensile strength, hardness, and elongation compared to the disk rotor 200.

A knuckle (not shown) and a bearing may be coupled between the axle of the vehicle and the coupling portion 110, and the hub 100 may be rotatably fixed to the vehicle body by the knuckle.

The coupling portion 110 and the extension portion 120 are roughly shaped like a hat with a brim, and thus may be referred to as a hat part.

The coupling portion 110 is formed with a plurality of through holes 111 to couple the axle and the hub 100, and the hub 100 and a wheel (not shown). In Figure 1, two through holes 111a capable of combining the axle and the hub 100 are formed, and five through holes 111b capable of combining the axle and the wheel or the hub 100 and the wheel are formed as an example. It is explained as follows. Of course, the number of through holes 111 may change depending on the structural design of the vehicle.

The coupling portion 110 has a hole 112 in the center into which an axle or bearing can be inserted, and may be disposed on different planes while protruding further from one side of the extension portion 120.

A description of the extension portion 120 will be provided later.

Next, the disk rotor 200 includes a front disk 210 and a rear disk 220.

The front disk 210 and the rear disk 220 have the same shape, and when the vehicle decelerates or stops, a brake pad contacts their outer surface to apply pressure.

The disk rotor 200 may be manufactured based on gray cast iron (FC material), which has relatively lower mechanical strength or elongation than the hub 100. Of course, by using gray cast iron material, it is possible to maintain the strong compressive strength and high damping capacity, which are the characteristics of the existing disk rotor 200. Accordingly, the hub 100 and the disk rotor 200 are made of different materials, which may have the effect of reducing heat conduction.

In addition, the rib 300 connects the front disk 210 and the rear disk 220, and provides the function of connecting the disk rotor 200 and the hub 100.

The ribs 300 are radially disposed between the front disk 210 and the rear disk 220 to connect them along the radial direction. At this time, a heat dissipation passage 230 is formed in the space between the plurality of ribs 300 between the front disk 210 and the rear disk 220.

The heat dissipation passage 230 is formed between the front disk 210 and the rear disk 220 and the ribs 300 coupled in a partition structure between them, and is disposed on the inside along the radial direction of the disk rotor 200. It can be formed to have a larger cross-sectional area from the inlet to the outlet disposed on the outside.

In addition, a heat dissipation through hole 240 formed to communicate with the internal heat dissipation passage 230 may be formed on the front disk 210 and the rear disk 220.

Figure 2 is a side view showing the brake disc assembly according to the first embodiment of the present invention, Figure 3 is an exploded perspective view showing the brake disc assembly shown in Figure 2, and Figure 4 is a brake shown in Figure 2. It is a cross-sectional view showing the central area of the disc assembly cut away, and FIG. 5 is a reference diagram showing a state in which the first rib and the second rib are respectively coupled in the brake disc assembly shown in FIG. 2. The same reference numerals as those described below indicate the same components.

The brake disc assembly 10 according to the first embodiment of the present invention includes a hub 100, a disc rotor 200, and a rib 300.

2 to 5, the front disk 210 is formed with a plurality of first slits 211 penetrating along the radial direction, and the rear disk 220 has the same shape and position as the first slit 211. A second slit 221 is formed. Of course, the front disk 210 and the rear disk 220 can be separated into front and rear during the assembly process after manufacturing the same product.

In addition, the rib 300 combines the front disk 210 and the rear disk 220 and simultaneously connects the hub 100 to the first rib 310 and the front disk 210 and the rear disk 220. It includes a second rib 320 that is simply coupled. The first rib 310 and the second rib 320 are coupled to the first slit 211 and the second slit 221, respectively, and are arranged alternately along the circumferential direction of the disk rotor 200. Of course, the first rib 310 and the second rib 320 may be provided at different ratios, and in this case, the first rib 310 and the second rib 320 are formed as a pattern with a set ratio. It can be arranged so that

The extension portion 120 includes a connecting member 121 that protrudes to correspond to the first rib 310, and a connecting groove 122 into which the end of the first rib 310 is inserted between the connecting members 121. .

The connecting member 121 has a connecting groove 122 formed in an approximately “V” shape at the center of the outer end, so that the first rib 310 can be partially inserted into the connecting groove 122.

The first rib 310 and the second rib 320 include a first protrusion 311 inserted into the first slit 211 and a second protrusion 312 inserted into the second slit 221, respectively. .

The first rib 310 and the second rib 320 have a substantially rectangular thin plate shape, and the first protrusion 311 and the second protrusion 312 each protrude from the long side edge. That is, the first protrusions 311 of the first rib 310 and the second rib 320 are inserted into the front disk 210 and the first slit 211, respectively, and the second protrusions 312 are respectively inserted into the rear disk. It is inserted into the second slit 221 of (220). In addition, the first rib 310 and the second rib 320 protrude from the long side edge as the first protrusion 311 and the second protrusion 312 protrude from the long side edge, so that the support ridge 314 is located in the area where the long side edge and the short side edge are adjacent to each other. ) is formed. At this time, the support 314 is supported on the inner surfaces of the front disk 210 and the rear disk 220, respectively, and can maintain a constant distance between the front disk 210 and the rear disk 220.

Here, the first slit 211 and the first protrusion 311 and the second slit 221 and the second protrusion 312 may be fixed by welding after assembly is completed. Of course, after welding, the upper surfaces of the front disk 210 and the rear disk 220 can be machined into a completely flat surface through post-processing.

At this time, the first rib 310 includes a third protrusion 313 that is inserted into the connection groove 122 and arranged in a cross-engagement manner with the connection member 121. The third protrusion 313 is formed to correspond to the shape of the connecting member 121, so that a groove is formed inside the third protrusion 313, and the third protrusion 313 is coupled to partially intersect with the connecting member 121. The third protrusion 313 and the connecting member 121 are simply assembled by assembly without forming processes such as attachment or welding.

Therefore, as the disk rotor 200 and the hub 100 are connected with the third protrusion 313 simply connected to the connecting member 121, the heat conduction path is interrupted, so the heat generated in the disk rotor 200 After being transmitted to the first rib 310, there may be a delay in conduction to the extension member 121, and since it is assembled in an assembled manner, it is possible to actively respond to thermal deformation, and on the contrary, after cooling, thermal deformation is restored to the original assembled state. This has the effect of preventing plastic deformation from occurring.

Of course, a heat dissipation space 123 is formed between each connecting member 121 on the extension part 120, and the heat dissipation space 123 communicates with the heat dissipation passage 230 of the disk rotor 200, thereby improving heat dissipation performance. There is an effect that can be achieved.

At this time, the second rib 320 is arranged to connect only the front disk 210 and the rear disk 220, and since both ends are made the same as the inner and outer peripheral surfaces of the disk rotor 200, the heat dissipation space 123 and It may be arranged so as not to interfere with communication of the heat dissipation passage 230.

Figure 6 is an exploded perspective view showing the brake disc assembly according to the second embodiment of the present invention, Figure 7 is a cross-sectional view showing the central area of the brake disc assembly shown in Figure 6 cut away, and Figure 8 is Figure 6 This is a reference diagram showing the coupled state of the first rib and the arrangement state of the second rib in the brake disc assembly shown in .

Referring to FIGS. 6 to 8, the brake disc assembly 20 according to the second embodiment of the present invention is different in the structure of the extension portion and the first rib.

First, the hub 100 is provided with a coupling portion 110 and an extension portion 120, and the extension portion 120 is bent at the outer edge of the coupling portion 110 to surround the outer edge of the coupling portion 110. It is extended. Accordingly, one cross section of the hub 100 may have an approximately “┏┓” shape.

The extension portion 120 includes a plurality of connection holes 121 into which the first rib 310 is inserted, and a plurality of heat dissipation holes 122 disposed between the connection holes 121 and the connection holes 121. That is, the connection holes 121 and heat dissipation holes 122 may be alternately arranged on the outer peripheral surface of the extension portion 120. The heat dissipation hole 123 may be formed in a larger size than the connection hole 121. Of course, it is preferable that the heat dissipation hole 122 is formed larger than the thickness of the rib 300.

Additionally, the rib 300 includes a plurality of first ribs 310 and a plurality of second ribs 320 respectively disposed between the first ribs 310.

The first rib 310 and the second rib 320 both have a first protrusion 311 and a second protrusion 312 and are coupled to the first slit 211 and the second slit 221, respectively, to form the front disk. Combine (210) and the rear disk (220).

At this time, the first rib 310 includes a third protrusion 313 that protrudes to be inserted into the connection hole 121.

The third protrusion 313 is formed to correspond to the size of the connection hole 121, and the area where the third protrusion 313 starts from the first rib 310 has a greater width or thickness than the third protrusion 313. A step 314 is formed. The step 314 has only the third protrusion 313 inserted into the connection hole 121, and the third protrusion 313 is inserted into the gap or connection hole 121 where the first rib 310 is connected to the extension portion 120. The insertion depth can be limited. Of course, the step 314 may have a function of limiting the depth at which the first protrusion 311 and the second protrusion 312 are inserted into the first slit 211 and the second slit 221, respectively.

In addition, the first rib 310 and the second rib 320 protrude from the long side edge as the first protrusion 311 and the second protrusion 312 protrude from the long side edge, so that the support ridge 314 is located in the area where the long side edge and the short side edge are adjacent to each other. ) is formed. At this time, the support 314 is supported on the inner surfaces of the front disk 210 and the rear disk 220, respectively, and can maintain a constant distance between the front disk 210 and the rear disk 220.

Therefore, as the disk rotor 200 and the hub 100 are connected with the third protrusion 313 inserted into the connection hole 121, the heat conduction path is interrupted, so the heat generated in the disk rotor 200 After being transmitted to the first rib 310, there may be a delay in conduction to the extension part 120, and since it is assembled in an assembled manner, it is possible to actively respond to thermal deformation, and on the contrary, after cooling, thermal deformation is restored to the original assembled state. This has the effect of preventing plastic deformation from occurring.

The present invention can be modified and implemented in various forms, and its scope is not limited to the above-described embodiments. Therefore, if the modified embodiment includes elements of the claims of the present invention, it should be considered to fall within the scope of the present invention.

1, 10, 20: Brake disc assembly
100: hub
110: coupling part
120: extension part
200: Disc rotor
210: front disk
220: rear disk
300: rib
310: first rib
320: second rib

Claims (9)

A hub including a coupling portion coupled to the axle and an extension portion extending radially along a radial direction from the outer edge of the coupling portion;
a disk rotor including a front disk spaced apart on one side and a rear disk spaced apart on the other side around an end of the extension portion; and
a plurality of ribs respectively coupled to a plurality of first slits formed along a radial direction on the front disk and second slits formed on the rear disk to correspond to the first slits, and connected to the extension portion;
Including,
The ribs are,
a plurality of first ribs coupled to the first slit and the second slit and connected to the extension portion;
A second rib disposed adjacent to the first rib and coupled only to the first slit and the second slit,
The first rib and the second rib are arranged alternately along the circumferential direction of the disk rotor,
The extension part,
A plurality of connecting members protruding to correspond to each of the first ribs,
It includes a connection groove into which the end of the first rib is inserted between the connection members,
The first rib and the second rib each include a first protrusion inserted into the first slit and a second protrusion inserted into the second slit,
The first rib is inserted into the connection groove and includes a third protrusion disposed to intersect the connection member. delete delete delete A hub including a coupling portion coupled to the axle and an extension portion bent and wrapped around the outer edge of the coupling portion;
a disk rotor disposed outside the extension portion and including a front disk and a rear disk disposed to face each other side by side; and
a plurality of ribs respectively coupled to a plurality of first slits formed along a radial direction on the front disk and second slits formed on the rear disk to correspond to the first slits, and connecting the extension portions;
Including,
The ribs are,
a plurality of first ribs coupled to the first slit and the second slit and inserted into the extension part;
A second rib disposed adjacent to the first rib and coupled only to the first slit and the second slit,
The first rib and the second rib are arranged alternately along the circumferential direction of the disk rotor,
The extension part,
A connection hole to which the first rib is connected,
It includes a heat dissipation hole disposed to communicate at least partially with heat dissipation passages formed on both sides of the second rib within the disk rotor,
The first rib and the second rib each include a first protrusion inserted into the first slit and a second protrusion inserted into the second slit,
The first rib includes a third protrusion inserted into the connection hole,
The first rib is,
A brake disc assembly characterized in that it includes a step formed in a region where the third protrusion starts to be wider than the third protrusion to limit the depth at which the third protrusion is inserted into the connection hole. delete delete delete delete