Suspension device

Abstract

Disclosed is a suspension device including: a main body connector provided with a body connection hole; and a bracket, in which the bracket includes: a bracket hole extending through the bracket and into which the wheel bearing is insertable; a caliper connector connected to the caliper; and a link connector connected to the link, and the bracket is configured to rotate relative to the body connection hole. The suspension device and the method of manufacturing the same according to the present disclosure may reduce the weight of the suspension device and improve the riding comfort of a vehicle.

Description

Technical Field

[0001] Exemplary embodiments of the present disclosure relate to a suspension device and a method of manufacturing the same, and more particularly, to a suspension device and a method of manufacturing the same that can reduce unsprung mass, tolerance, and production cost. Background Art

[0002] Due to the demand for environmentally friendly vehicles, hybrid vehicles or electric vehicles equipped with a motor and a battery are increasingly being used.

[0003] Because hybrid or electric vehicles must include batteries, they carry an additional weight equal to the battery's weight compared to typical internal combustion engine vehicles. This increased vehicle weight requires increased suspension stiffness. This increased suspension stiffness also requires increased suspension weight, which in turn increases unsprung mass, resulting in a decrease in vehicle ride comfort. Therefore, various technologies are needed to reduce unsprung mass and improve vehicle ride comfort.

[0004] Furthermore, there is a need for a technology that can reduce the unsprung mass while maintaining the stiffness of the suspension.

[0005] A related art of the present disclosure is disclosed in Korean Patent Application Publication No. 10-2015-0066110 (published on June 16, 2015 and titled “Structure of Trailing Arm”). Utility Model Content

[0006] An object of the present disclosure is to provide a suspension device that can reduce unsprung mass and a method of manufacturing the same.

[0007] Furthermore, an object of the present disclosure is to provide a suspension device and a method of manufacturing the same that can minimize tolerance.

[0008] Furthermore, an object of the present disclosure is to provide a suspension device that can increase rigidity and a method of manufacturing the same.

[0009] Furthermore, an object of the present disclosure is to provide a suspension device that can reduce unsprung mass while maintaining rigidity, and a method of manufacturing the same.

[0010] Furthermore, an object of the present disclosure is to provide a suspension device and a method of manufacturing the same that can enhance coupling strength between components.

[0011] The suspension device according to the present disclosure includes: a body connector, including a main body connector provided with a body connection hole; and a bracket, wherein the bracket includes: a bracket hole extending through the bracket and into which a wheel bearing can be inserted; a brake caliper connector connected to the brake caliper; and a link connector connected to the link, and the bracket is configured to rotate relative to the body connection hole.

[0012] The link connector may include a first link connector provided at an upper side of the bracket, a second link connector provided at one side of a lower side of the bracket, and a third link connector provided at the other side of the lower side of the bracket.

[0013] The link may include a first link connected to the first link connector to be rotatable, a second link connected to the second link connector to be rotatable, and a third link connected to the third link connector to be rotatable.

[0014] The body connection hole may be provided at one side of the main body connector, and the body connection insertion portion provided at the other side of the main body connector is inserted into and fixed in the bracket connector of the bracket.

[0015] The body connection insertion portion may include a body latch portion formed to be recessed, and the bracket may include a first bracket connection member inserted into the body latch portion.

[0016] The suspension device may include a body connection insertion hole through which one side and the other side of the body connection insertion portion communicate with each other, wherein the bracket connector may include a second bracket connection member penetrating the body connection insertion hole.

[0017] The body connector may comprise a first material, and the bracket may comprise a second material different from the first material.

[0018] The first material may include iron, and the second material may include aluminum.

[0019] According to the present disclosure, a manufacturing method of a suspension device includes: an insertion step of arranging a body connector in a mold, wherein the body connector includes a main body connector provided with a body connection hole and a body connection insertion part, and the body connector contains a first material; and a casting step of manufacturing a bracket by injecting a second material different from the first material into the mold, wherein the bracket includes: a bracket connector, which contacts the body connection insertion part; a bracket hole, into which a wheel bearing can be inserted; a brake caliper connector, which is connected to the brake caliper; and a connecting rod connector, which is connected to the connecting rod.

[0020] The manufacturing method may further include a bushing arrangement step of press-fitting the bushing into the connecting rod connector and the body connecting hole.

[0021] The suspension device according to the present disclosure includes: a body connector, including a main body connector, which is provided with a body connection insertion part and a connection reinforcement part arranged on the body connection insertion part; and a bracket, wherein the bracket includes: a bracket connector, the body connection insertion part is inserted into the bracket connector and the bracket connector is in contact with the connection reinforcement part; a bracket hole, the wheel bearing can be inserted into the bracket hole; a brake caliper connector, which is connected to the brake caliper; and a connecting rod connector, which is connected to the connecting rod.

[0022] The coupling reinforcement portion may include a first coupling reinforcement portion formed on a surface of the body connection insertion portion to enhance coupling strength between the body connection insertion portion and the bracket connector.

[0023] The first coupling reinforcement portion may include a coupling reinforcement hole penetrating the body connection insertion portion, and the bracket connector may include a first bracket connection member contacting the coupling reinforcement hole and a second bracket connection member disposed penetrating the coupling reinforcement hole.

[0024] The first coupling reinforcement portion may include a coupling reinforcement burr that penetrates the body connection insertion portion and protrudes in one direction relative to the body connection insertion portion. The bracket connector may include a first bracket connection member that contacts the coupling reinforcement burr and a second bracket connection member that is arranged to penetrate the coupling reinforcement burr.

[0025] The first connection reinforcement portion may include a connection reinforcement forming unit arranged to protrude in one direction and inclined relative to the body connection insertion portion, and the bracket connector may include a first bracket connection member in contact with the connection reinforcement forming unit and a third bracket connection member arranged on the connection reinforcement forming unit.

[0026] The first coupling reinforcement portion may include a coupling reinforcement forming unit hole, the coupling reinforcement forming unit hole being arranged to protrude in one direction and inclined relative to the body connection insertion portion, and the coupling reinforcement forming unit hole being provided with a hole. The bracket connector may include a first bracket connecting member contacting the coupling reinforcement forming unit hole and a second bracket connecting member penetrating the coupling reinforcement forming unit hole.

[0027] The suspension device may include a second coupling reinforcement portion formed on an end portion of the body connection insertion portion to enhance coupling strength between the body connection insertion portion and the bracket connector.

[0028] The second coupling reinforcement portion may include a coupling reinforcement flange extending from an end portion of the body connection insertion portion and bent in one direction. The bracket connector may include a first bracket connection member arranged around the coupling reinforcement flange.

[0029] The second coupling reinforcement portion may include a coupling reinforcement bead facing the body connection insertion portion by extending from an end portion of the body connection insertion portion and being bent at the body connection insertion portion.

[0030] The link connector may include a first link connector provided at an upper side of the bracket, a second link connector provided at one side of a lower side of the bracket, and a third link connector provided at the other side of the lower side of the bracket.

[0031] The link may include a first link connected to the first link connector to be rotatable, a second link connected to the second link connector to be rotatable, and a third link connected to the third link connector to be rotatable.

[0032] The body connector may comprise a first material, and the bracket may comprise a second material different from the first material.

[0033] The first material may include iron, and the second material may include aluminum.

[0034] The body connection hole may be provided at one side of the main body connector, and the bracket may be rotatable relative to the body connection hole.

[0035] The manufacturing method of the suspension device according to the present disclosure includes: an insertion step of arranging a body connector in a mold, wherein the body connector includes a main body connector, which is provided with a body connection insertion part and a connection reinforcement part arranged on the body connection insertion part, and the body connector contains a first material; and a casting step of manufacturing a bracket by injecting a second material different from the first material into the mold, wherein the bracket includes: a bracket connector, which is in contact with the body connection insertion part; and a connecting rod connector, which is connected to the connecting rod.

[0036] Before the inserting step, the manufacturing method may further include the step of forming a coupling reinforcement portion on the body connection insertion portion.

[0037] The step of forming the coupling reinforcement portion may include forming a first coupling reinforcement portion on a surface of the body connection insertion portion to enhance coupling strength between the body connection insertion portion and the bracket connector.

[0038] The first coupling reinforcement portion may include a coupling reinforcement hole penetrating the body connection insertion portion.

[0039] The first coupling reinforcement portion may include a coupling reinforcement burr penetrating the body connection insertion portion and protruding in one direction relative to the body connection insertion portion.

[0040] The first coupling reinforcement portion may include a coupling reinforcement forming unit arranged to protrude in one direction and inclined with respect to the body connection insertion portion.

[0041] The first coupling reinforcement portion may include a coupling reinforcement forming unit hole arranged to protrude in one direction and inclined with respect to the body connection insertion portion, and the coupling reinforcement forming unit hole is provided with a hole.

[0042] The step of forming the coupling reinforcement portion may include forming a second coupling reinforcement portion in an end portion of the body connection insertion portion to enhance coupling strength between the body connection insertion portion and the bracket connector.

[0043] The second coupling reinforcement portion may include a coupling reinforcement flange extending from an end portion of the body connection insertion portion and bent in one direction.

[0044] The second coupling reinforcement portion may include a coupling reinforcement bead facing the body connection insertion portion by extending from an end portion of the body connection insertion portion and being bent at the body connection insertion portion.

[0045] The suspension device and the manufacturing method thereof according to the present disclosure can reduce the weight of the suspension device and improve the ride comfort of a vehicle.

[0046] Furthermore, the suspension device and the manufacturing method thereof according to the present disclosure may minimize tolerance occurring in the suspension device.

[0047] Furthermore, the suspension device and the manufacturing method thereof according to the present disclosure can increase the rigidity of the suspension device.

[0048] Furthermore, the suspension device and the manufacturing method thereof according to the present disclosure can reduce manufacturing costs.

[0049] Furthermore, the suspension device and the manufacturing method thereof according to the present disclosure can reduce the weight of the suspension device while maintaining the rigidity of the suspension device. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is a perspective view showing a suspension device according to an embodiment of the present disclosure when viewed from one side.

[0051] Figure 2 is a perspective view showing the suspension device according to the embodiment of the present disclosure when viewed from the other side.

[0052] Figure 3 is a plan view showing a portion of a suspension device according to an embodiment of the present disclosure.

[0053] Figure 4 is a perspective view showing a portion of a suspension device according to an embodiment of the present disclosure when viewed from one side.

[0054] Figure 5 is a perspective view showing a portion of the suspension device according to the embodiment of the present disclosure when viewed from the other side.

[0055] Figure 6 is an enlarged perspective view showing a portion of a suspension device according to an embodiment of the present disclosure.

[0056] Figure 7 is a perspective view showing a body connector of a suspension device according to an embodiment of the present disclosure when viewed from one side.

[0057] Figure 8 is a perspective view showing a body connector of the suspension device according to the embodiment of the present disclosure when viewed from the other side.

[0058] Figure 9 is a flowchart illustrating a method of manufacturing a suspension device according to an embodiment of the present disclosure.

[0059] Figure 10 is a perspective view illustrating inserting a body connector of a suspension device into a mold according to an embodiment of the present disclosure.

[0060] Figure 11 is a perspective view showing a suspension device according to an embodiment of the present disclosure when viewed from one side.

[0061] Figure 12 is a perspective view showing the suspension device according to the embodiment of the present disclosure when viewed from the other side.

[0062] Figure 13 is a plan view showing a portion of a suspension device according to an embodiment of the present disclosure.

[0063] Figure 14 is a perspective view showing a portion of a suspension device according to an embodiment of the present disclosure when viewed from one side.

[0064] Figure 15 is a perspective view showing a portion of the suspension device according to the embodiment of the present disclosure when viewed from the other side.

[0065] Figure 16 is an enlarged perspective view showing a portion of a suspension device according to an embodiment of the present disclosure.

[0066] Figure 17 is a perspective view showing a body connector of a suspension device according to an embodiment of the present disclosure when viewed from one side.

[0067] Figure 18is a perspective view showing a body connector of the suspension device according to the embodiment of the present disclosure when viewed from the other side.

[0068] Figure 19 is a cross-sectional view illustrating a first coupling reinforcement portion of the suspension device according to the first embodiment of the present disclosure.

[0069] Figure 20 is a sectional view showing a first coupling reinforcement portion of a suspension device according to a second embodiment of the present disclosure.

[0070] Figure 21 is a sectional view showing a first coupling reinforcement portion of a suspension device according to a third embodiment of the present disclosure.

[0071] Figure 22 is a sectional view showing a first coupling reinforcement portion of a suspension device according to a fourth embodiment of the present disclosure.

[0072] Figure 23 is a perspective view showing a body connector of the suspension device according to the embodiment of the present disclosure when viewed from the other side.

[0073] Figure 24 is a cross-sectional view showing an end portion of a second coupling reinforcement portion of the suspension device according to the first embodiment of the present disclosure.

[0074] Figure 25 is a sectional view showing an end portion of a second coupling reinforcement portion of a suspension device according to a second embodiment of the present disclosure.

[0075] Figure 26 is a flowchart illustrating a method of manufacturing a suspension device according to an embodiment of the present disclosure.

[0076] Figure 27 is a perspective view illustrating inserting a body connector of a suspension device into a mold according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0077] Exemplary embodiments of a suspension device and a method for manufacturing the same will be described below with reference to the accompanying drawings. It should be understood that the thickness of each line or the size of each component in the drawings may be exaggerated for clarity and convenience. Furthermore, the terms used herein are defined with consideration given to the functionality of the present disclosure and may vary depending on the user's or operator's intentions or practices. Therefore, the definitions of these terms must be based on the content of this document.

[0078] Figure 1 is a perspective view showing a suspension device according to an embodiment of the present disclosure when viewed from one side. Figure 2is a perspective view showing the suspension device according to the embodiment of the present disclosure when viewed from the other side.

[0079] Figure 1 and Figure 2 A suspension device 1 is shown. The suspension device may include a body connector 10, a bracket 20, a disc 30, a caliper 40, a link 50, and a bushing 60.

[0080] The body connector 10 may be disposed between a body (not shown) of a vehicle and the bracket 20 to connect the body (not shown) and the bracket 20 .

[0081] The body connector 10 may include a main body connector 110. The main body connector 110 may be provided with a body connection hole 111. According to an embodiment, the body connection hole 111 may be provided at one end of the main body connector 110. The body connection hole 111 allows one side (e.g., in the +Y-axis direction) and the other side (e.g., in the -Y-axis direction) of the main body connector 110 to communicate with each other. A bushing 60 may be disposed in the body connection hole 111. According to an embodiment, a body connection bushing 61 may be disposed in the body connection hole 111. The body connection bushing 61 may be inserted into the body connection hole 111. The main body connector 110 and the body may be connected via the body connection bushing 61. Because the body connection bushing 61 is disposed in the body connection hole 111 to connect the body and the main body connector 110, the main body connector 110 can rotate relative to the body connection bushing 61 disposed in the body connection hole 111, and the bracket 20 connected to the main body connector 110 can also rotate relative to the body connection bushing 61. Therefore, the bracket 20 can move relative to the body.

[0082] The main body connector 110 can be inserted into the bracket 20 and fixed to the bracket 20. Because the main body connector 110 is inserted into and fixed to the bracket 20, the main body connector 110 and the bracket 20 can be formed into an integral body and can be moved. Because the main body connector 110 is inserted into and formed into an integral body with the bracket 20, it is not necessary to use a coupling member (e.g., bolts, nuts, etc.) to connect the body connector 10 and the bracket 20 together.

[0083] Since no coupling member is used, the unsprung mass of the suspension device 1 can be reduced by the mass of the coupling member, and the ride comfort of the vehicle can be improved.

[0084] Furthermore, since a coupling member is not used, the tolerance between the body connector 10 and the bracket 20 can be reduced.

[0085] Furthermore, since a process of coupling the body connector 10 and the bracket 20 is not required, the manufacturing process can be simplified and the unit cost of the suspension device 1 can be reduced.

[0086] The carrier 20 may be connected to the disc 30 , the caliper 40 , and the connecting rod 50 .

[0087] The disk 30 may be arranged on one side of the bracket 20 (e.g., in the +Y-axis direction). The disk 30 may include a disk cover 310 and a disk rotor 320. The disk cover 310 may be arranged between the bracket 20 and the disk rotor 320. The disk rotor 320 may rotate relative to the bracket 20, and the disk cover 310 may be fixed to the bracket 20.

[0088] The brake caliper 40 may be arranged to be connected to the carrier 20. A portion of the brake caliper 40 may be fixed to the carrier 20 and may move to contact the disk rotor 320 of the disk 30. When the brake caliper 40 moves to contact the disk rotor 320 rotating relative to the carrier 20, friction generated between the brake caliper 40 and the disk rotor 320 may reduce the rotation speed of the disk rotor 320 or stop the rotation of the disk rotor 320.

[0089] The connecting rod 50 may be arranged to be connected to the bracket 20. One end of the connecting rod 50 may be connected to the bracket 20, and the other end thereof may be connected to the body. The connecting rod 50 may rotate relative to the bracket 20 and the body. As the connecting rod 50 rotates relative to the bracket 20 and the body, the bracket 20 may move relative to the body. The connecting rod 50 may include a first connecting rod 51, a second connecting rod 52, and a third connecting rod 53.

[0090] The first link 51 may be disposed on the upper side (e.g., in the +Z-axis direction) of the carriage 20. The second link 52 may be disposed on one portion (e.g., in the +X-axis direction) of the lower side (e.g., in the -Z-axis direction) of the carriage 20. The third link 53 may be disposed on another portion (e.g., in the -X-axis direction) of the lower side (e.g., in the -Z-axis direction) of the carriage 20.

[0091] The first link 51, the second link 52, and the third link 53 can be connected to the bracket 20 and rotate relative to the bracket 20. According to an embodiment, one end of the first link 51, one end of the second link 52, and one end of the third link 53 can be connected to the bracket 20 and rotate relative to the bracket 20, and the other ends of the first link 51, the other ends of the second link 52, and the other ends of the third link 53 can be connected to the body and rotate relative to the body. As the first link 51, the second link 52, and the third link 53 rotate relative to the bracket 20 and the body, the bracket 20 can move relative to the body.

[0092] The third connecting rod 53 may include an elastic support portion 531. The elastic support portion 531 may be arranged between one end and the other end of the third connecting rod 53. An elastic element may be arranged on the elastic support portion 531, and the elastic element may be arranged to connect the third connecting rod 53 and a part of the body. Depending on the embodiment, the elastic element may be configured as a spring. Since the elastic element connects the third connecting rod 53 and a part of the body, the distance between the part of the body and the third connecting rod 53 can be changed.

[0093] Figure 3 is a plan view showing a portion of a suspension device according to an embodiment of the present disclosure. Figure 4 is a perspective view showing a portion of a suspension device according to an embodiment of the present disclosure when viewed from one side. Figure 5 is a perspective view showing a portion of the suspension device according to the embodiment of the present disclosure when viewed from the other side. Figure 6 is an enlarged perspective view showing a portion of a suspension device according to an embodiment of the present disclosure. Figure 7 1 is a perspective view showing a body connector of a suspension device according to an embodiment of the present disclosure when viewed from one side. Figure 8 1 is a perspective view showing a body connector of a suspension device according to an embodiment of the present disclosure when viewed from the other side.

[0094] Figures 3 to 8 The suspension device 1, the body connector 10, the main body connector 110, the body connection hole 111, the bracket 20, the bushing 60, the body connection bushing 61 and the third link connection bushing 62 are shown in FIG. Figure 1 and Figure 2 The suspension device 1, the body connector 10, the main body connector 110, the body connection hole 111, the bracket 20, the bushing 60, the body connection bushing 61 and the third link connection bushing 62 shown in FIG are the same. Therefore, the description of the same configuration may be omitted.

[0095] refer to Figures 3 to 8 , the detailed structure of the main connector 10 and the bracket 20 can be seen.

[0096] The body connector 10 may include a main body connector 110 , a body connection insertion portion 120 , a body recessed portion 130 , and a body bent portion 140 .

[0097] The main body connector 110 may include a body connection hole 111. The body connection hole 111 allows one side (e.g., the +Y-axis direction) and the other side (e.g., the -Y-axis direction) of the main body connector 110 to communicate with each other. According to one embodiment, the body connection hole 111 may be provided on one end of the main body connector 110, and the body connection insertion portion 120 may be provided on the other end of the main body connector 110.

[0098] The bushing 60 may be disposed in the body connection hole 111. According to an embodiment, the body connection bushing 61 may be disposed in the body connection hole 111. The body connection bushing 61 may be inserted into the body connection hole 111 and connected to the body. The body connection bushing 61 may be configured as an elastic element. Because the body connection bushing 61 is inserted into the body connection hole 111 and connected to the body, the main body connector 110 provided with the body connection hole 111 can rotate relative to the body.

[0099] The body connection insert portion 120 may be provided in the main body connector 110 so as to contact the bracket 20. The body connection insert portion 120 may be defined as the portion of the main body connector 110 that contacts the bracket 20. According to an embodiment, the body connection insert portion 120 may be inserted into the bracket 20, so that the body connector 10 and the bracket 20 may be integrally provided. Because the body connector 10 and the bracket 20 are integrally provided, a coupling member connecting the body connector 10 and the bracket 20 may not be used.

[0100] The body connection insertion portion 120 may be provided with a body latch portion 121 and a body connection insertion hole 122 .

[0101] The body latch portion 121 may be provided with a step toward the center (eg, Z-axis direction) of the main body connector 110 .

[0102] According to an embodiment, the body latch portion 121 may be provided to be recessed. The body latch portion 121 may be provided to be recessed in the main body connector 110 , and the bracket 20 may be inserted into the body latch portion 121 .

[0103] According to an embodiment, the body latch portion 121 may be provided to protrude from the main body connector 110. The body latch portion 121 may be provided to protrude from the main body connector 110, and the body latch portion 121 may be inserted into the bracket 20.

[0104] When the bracket 20 is inserted into the body latch portion 121 or the body latch portion 121 is inserted into the bracket 20, the coupling strength between the body connector 10 and the bracket 20 may be increased. In addition, there may be no gap between the body connector 10 and the bracket 20.

[0105] The body connection insertion hole 122 allows one side (e.g., the +Y-axis direction) and the other side (e.g., the -Y-axis direction) of the main body connector 110 to communicate with each other. One or more body connection insertion holes 122 may be provided. Because the body connection insertion holes 122 are provided in the main body connector 110, the bracket 20 can be arranged to extend through the body connection insertion holes 122. Since the bracket 20 extends through the body connection insertion holes 122, the coupling strength between the body connector 10 and the bracket 20 can be increased. Furthermore, there can be no gap between the body connector 10 and the bracket 20.

[0106] A body recessed portion 130 may be provided in the main body connector 110 and formed so as to be recessed toward one side (e.g., the -Y-axis direction). One or more body recessed portions 130 may be provided in the main body connector 110. The body recessed portion 130 may be arranged in the center portion of the main body connector 110. The location where the body recessed portion 130 is arranged is not limited to the center portion of the main body connector 110; instead, the body recessed portion 130 may be arranged in various locations. Since the body recessed portion 130 is provided in the main body connector 110, the bending rigidity of the body connector 10 can be increased.

[0107] A body curved portion 140 may be provided in the main body connector 110 and may be bent toward one side (e.g., the -Y axis direction). The body curved portion 140 may be provided in the outer portion of the main body connector 110. Since the body curved portion 140 is provided in the main body connector 110, the bending rigidity of the body connector 10 may be increased.

[0108] The bracket 20 may include a bracket hole 210 , a link connector 220 , a caliper connector 230 , a disc connector 240 , and a bracket connector 250 .

[0109] The bracket 20 may be provided with a bracket hole 210. The bracket hole 210 allows one side (e.g., the +Y-axis direction) and the other side (e.g., the -Y-axis direction) of the bracket 20 to communicate with each other. The tray 30 may be inserted into the bracket hole 210. The tray 30 may be inserted into the bracket hole 210 and fixed to the bracket 20.

[0110] The bracket 20 may be provided with a link connector 220. The link connector 220 may connect the bracket 20 and the link 50. The link 50 may be provided to be connected to the bracket 20 via the link connector 220 and to rotate relative to the bracket 20. The link connector 220 may include a first link connector 221, a second link connector 222, and a third link connector 223.

[0111] The first link connector 221 may be provided in the bracket 20. Depending on the embodiment, the first link connector 221 may be provided on the upper side of the bracket 20 (e.g., in the +Z axis direction). The first link connector 221 may be provided with a hole into which the first link 51 may be inserted. The first link connector 221 may be connected to the first link 51, and the first link 51 may rotate relative to the bracket 20 by being connected to the first link connector 221.

[0112] The second link connector 222 may be provided in the bracket 20. Depending on the embodiment, the second link connector 222 may be provided on one side (e.g., in the +X-axis direction) of the lower side (e.g., in the -Z-axis direction) of the bracket 20. The second link connector 222 may be provided with a hole into which the second link 52 may be inserted. The second link connector 222 may be connected to the second link 52, and the second link 52 may rotate relative to the bracket 20 by being connected to the second link connector 222.

[0113] The third link connector 223 may be provided in the bracket 20. Depending on the embodiment, the third link connector 223 may be provided on the other side (e.g., the -X-axis direction) of the lower side (e.g., the -Z-axis direction) of the bracket 20. The third link connector 223 may be provided with a hole into which the third link 53 may be inserted. The third link connector 223 may be connected to the third link 53, and the third link 53 may rotate relative to the bracket 20 by being connected to the third link connector 223.

[0114] The link connector 220 may be provided with a bushing 60. According to an embodiment, the third link connector 223 may be provided with a third link connection bushing 62. The third link connection bushing 62 may be connected to the third link 53. The third link 53 may rotate relative to the bracket 20 by being connected to the third link connection bushing 62.

[0115] Brake caliper connector 230 may be provided in bracket 20. Brake caliper 40 may be connected to brake caliper connector 230. Depending on the embodiment, brake caliper 40 may be fixed to brake caliper connector 230 and, as disc rotor 320 moves relative to disc 30, may come into contact with and rub against disc rotor 320, or become spaced apart from disc rotor 320. Due to the friction between brake caliper 40 and disc 30, the rotation of disc 30 may be slowed down or stopped.

[0116] The tray connector 240 may be provided in the tray 20. The tray connector 240 may be arranged adjacent to the tray hole 210. The tray connector 240 may be provided as a hole extending through the tray 20. The tray connector 240 may be provided as one or more holes. The tray connector 240 may be connected to the tray 30. According to embodiments, a portion of the tray 30 may be fixed to the tray 20 by extending through the tray connector 240.

[0117] The bracket connector 250 may be provided in the bracket 20. The bracket connector 250 may be connected to the body connector 10. According to an embodiment, the body connector 10 may be inserted into the bracket connector 250. The first bracket connection member 251 provided in the bracket connector 250 may be arranged in the body latch portion 121 of the body connector 10. The first bracket connection member 251 may be inserted into the body latch portion 121.

[0118] The second bracket connecting member 252 provided in the bracket connector 250 can be arranged in the body connection insertion hole 122 of the body connector 10. The second bracket connecting member 252 can be inserted into the body connection insertion hole 122. According to an embodiment, the second bracket connecting member 252 can penetrate the body connection insertion hole 122. Because the first bracket connecting member 251 is arranged in the body latch portion 121 and the second bracket connecting member 252 is arranged in the body connection insertion hole 122, the coupling strength between the body connector 10 and the bracket 20 can be increased. In addition, the gap between the body connector 10 and the bracket 20 can be reduced.

[0119] The body connector 10 may be made of a material including a first material. According to an embodiment, the first material may be a material including at least one of iron, iron alloy, carbon fiber, and plastic, or a combination thereof.

[0120] The bracket 20 may be made of a material including a second material different from the first material. According to an embodiment, the second material may be a material including at least one of aluminum, aluminum alloy, carbon fiber, and plastic, or a combination thereof.

[0121] By providing the body connector 10, it is possible to manufacture the bracket 20 integrally connected to the body connector 10. Hereinafter, a method of manufacturing the suspension device 1 provided with the body connector 10 and the bracket 20 will be described.

[0122] Figure 9 is a flowchart illustrating a method of manufacturing a suspension device according to an embodiment of the present disclosure. Figure 10 is a perspective view illustrating inserting a body connector of a suspension device into a mold according to an embodiment of the present disclosure.

[0123] exist Figure 9 and Figure 10 The body connector 10, the main body connector 110, the body connection hole 111, the body connection insertion portion 120, the body latch portion 121, the body connection insertion hole 122, the body concave portion 130, the body bent portion 140 and the bracket 20 used in the description Figures 1 to 8The body connector 10, the main body connector 110, the body connection hole 111, the body connection insertion portion 120, the body latch portion 121, the body connection insertion hole 122, the body concave portion 130, the body bent portion 140, and the bracket 20 shown in FIG are the same. Therefore, the description of the same configuration may be omitted.

[0124] refer to Figure 9 and Figure 10 The manufacturing method of the suspension device 1 may include an inserting step of arranging the body connector 10 in the mold M ( Figure 9 The body connector 10 may be made of a material including a first material. The body connection insert portion 120 of the body connector 10 may be inserted into the mold M. Since the body connection insert portion 120 is inserted into the mold M, the body connection insert portion 120 may be formed in the casting step ( Figure 9 In S920 ) in the step of contacting with a material including a second material.

[0125] The manufacturing method of the suspension device 1 may include a casting step ( Figure 9 The material containing the second material may be injected into the mold M through the mold hole MH of the mold M. The first material of the body connector 10 and the second material of the bracket 20 may be different from each other. The mold M may be configured to correspond to the shape of the bracket 20.

[0126] In the casting step ( S920 ), the body connection insert 120 provided in the body connector 10 can be connected to the bracket connector 250 of the bracket 20 . According to embodiments, the body connection insert 120 can be inserted into the bracket connector 250 . When the body connection insert 120 is inserted into the bracket connector 250 , a connection strength is generated between the body connection insert 120 and the bracket connector 250 , allowing the body connector 10 and the bracket 20 to form a single unit. Because the body connector 10 and the bracket 20 can be formed as a single unit, coupling members (e.g., bolts, nuts, etc.) that couple the body connector 10 and the bracket 20 can be eliminated. Consequently, the mass of the suspension device 1 can be reduced, and the process of coupling the body connector 10 and the bracket 20 is eliminated, thereby reducing the manufacturing cost of the suspension device 1 .

[0127] The body connection insertion portion 120 may include a body latch portion 121 and a body connection insertion hole 122 .

[0128] The body latch portion 121 may be formed into a concave shape that is recessed toward the center of the main body connector 110. In the casting step (S920), the material containing the second material may be disposed in the body latch portion 121, and thus, the first bracket connecting member 251 of the bracket 20 may be disposed in the body latch portion 121. When the first bracket connecting member 251 is disposed in the body latch portion 121, the coupling strength between the body connector 10 and the bracket 20 may be increased, and the tolerance between the body connector 10 and the bracket 20 may be reduced.

[0129] The body connection insertion hole 122 can be provided as a hole through which one side and the other side of the main body connector 110 communicate with each other. In the casting step (S920), a material containing a second material can be provided in the body connection insertion hole 122, and thus, the second bracket connection member 252 of the bracket 20 can be arranged in the body connection insertion hole 122. According to embodiments, the second bracket connection member 252 can extend through the body connection insertion hole 122. Since the second bracket connection member 252 extends through the body connection insertion hole 122, the coupling strength between the body connector 10 and the bracket 20 can be increased, and the tolerance between the body connector 10 and the bracket 20 can be reduced.

[0130] The manufacturing method of the suspension device 1 may include a bushing arrangement step ( Figure 9 The bushing 60 may include a body connecting bushing 61 and a third link connecting bushing 62 .

[0131] The bushing arrangement step (S930) may include arranging the body connection bushing 61 in the body connection hole 111. According to an embodiment, the bushing arrangement step (S930) may include inserting the body connection bushing 61 into the body connection hole 111.

[0132] The bushing arrangement step (S930) may include arranging the third link connection bushing 62 in the third link connector 223. According to an embodiment, the bushing arrangement step (S930) may include inserting the third link connection bushing 62 into the third link connector 223.

[0133] The suspension device 1 manufactured by the suspension device manufacturing method can be made lightweight, thereby improving ride comfort. In addition, the tolerance occurring in the suspension device 1 can be minimized, and the rigidity can be increased. In addition, the manufacturing cost of the suspension device 1 can be reduced.

[0134] Figure 11 is a perspective view showing a suspension device according to an embodiment of the present disclosure when viewed from one side. Figure 12is a perspective view showing the suspension device according to the embodiment of the present disclosure when viewed from the other side.

[0135] Figure 11 and Figure 12 A suspension device 71 is shown. The suspension device 71 may include a body connector 710, a bracket 720, a disc 730, a brake caliper 740, a link 750, and a bushing 760.

[0136] The body connector 710 may be disposed between a body (not shown) of a vehicle and the bracket 720 to connect the body (not shown) and the bracket 720 .

[0137] The body connector 710 may include a main body connector 7110. The main body connector 7110 may be provided with a body connection hole 7111. According to an embodiment, the body connection hole 7111 may be provided on one end of the main body connector 7110. The body connection hole 7111 may enable one side (e.g., +Y-axis direction) and the other side (e.g., -Y-axis direction) of the main body connector 7110 to communicate with each other. The bushing 760 may be arranged in the body connection hole 7111. According to an embodiment, the body connection bushing 761 may be arranged in the body connection hole 7111. The body connection bushing 761 may be inserted into the body connection hole 7111. The main body connector 7110 and the body may be connected through the body connection bushing 761. Because the body connection bushing 761 is disposed in the body connection hole 7111 to connect the body and the main body connector 7110, the main body connector 7110 can rotate relative to the body connection bushing 761 disposed in the body connection hole 7111, and the bracket 720 connected to the main body connector 7110 can also rotate relative to the body connection bushing 761. Therefore, the bracket 720 can move relative to the body.

[0138] The main body connector 7110 can be inserted into the bracket 720 and fixed to the bracket 720. Since the main body connector 7110 is inserted into and fixed to the bracket 720, the main body connector 7110 and the bracket 720 can be formed into an integral body and can be moved. Because the main body connector 7110 is inserted into and formed into an integral body with the bracket 720, it is not necessary to use a coupling member (e.g., a bolt, a nut, etc.) to connect the body connector 710 and the bracket 720 together.

[0139] Since no coupling member is used, the unsprung mass of the suspension device 71 can be reduced by the mass of the coupling member, and the ride comfort of the vehicle can be improved.

[0140] Furthermore, since a coupling member is not used, the tolerance between the body connector 710 and the bracket 720 can be reduced.

[0141] Furthermore, since a process of coupling the body connector 710 and the bracket 720 is not required, the manufacturing process may be simplified and the unit cost of the suspension device 71 may be reduced.

[0142] The bracket 720 may be connected to the disc 730 , the brake caliper 740 , and the connecting rod 750 .

[0143] The disk 730 may be arranged on one side of the bracket 720 (e.g., in the +Y-axis direction). The disk 730 may include a disk cover 7310 and a disk rotor 7320. The disk cover 7310 may be arranged between the bracket 720 and the disk rotor 7320. The disk rotor 7320 may rotate relative to the bracket 720, and the disk cover 7310 may be fixed to the bracket 720.

[0144] The brake caliper 740 may be provided to be connected to the bracket 720. A portion of the brake caliper 740 may be fixed to the bracket 720 and may move to contact the disk rotor 7320 of the disk 730. When the brake caliper 740 moves to contact the disk rotor 7320 rotating relative to the bracket 720, friction generated between the brake caliper 740 and the disk rotor 7320 may reduce the rotation speed of the disk rotor 7320 or stop the rotation of the disk rotor 7320.

[0145] The connecting rod 750 may be arranged to be connected to the bracket 720. One end of the connecting rod 750 may be connected to the bracket 720, and the other end of the connecting rod may be connected to the body. The connecting rod 750 may rotate relative to the bracket 720 and the body. As the connecting rod 750 rotates relative to the bracket 720 and the body, the bracket 720 may move relative to the body. The connecting rod 750 may include a first connecting rod 751, a second connecting rod 752, and a third connecting rod 753.

[0146] The first link 751 may be provided on the upper side (e.g., in the +Z-axis direction) of the bracket 720. The second link 752 may be arranged on one portion (e.g., in the +X-axis direction) of the lower side (e.g., in the -Z-axis direction) of the bracket 720. The third link 753 may be arranged on another portion (e.g., in the -X-axis direction) of the lower side (e.g., in the -Z-axis direction) of the bracket 720.

[0147] The first link 751, the second link 752, and the third link 753 may be connected to the bracket 720 and rotate relative to the bracket 720. According to an embodiment, one end of the first link 751, one end of the second link 752, and one end of the third link 753 may be connected to the bracket 720 and rotate relative to the bracket 720, and the other ends of the first link 751, the other ends of the second link 752, and the other ends of the third link 753 may be connected to the body and rotate relative to the body. Since the first link 751, the second link 752, and the third link 753 rotate relative to the bracket 720 and the body, the bracket 720 may move relative to the body.

[0148] The third connecting rod 753 may include an elastic support portion 7531. The elastic support portion 7531 may be arranged between one end and the other end of the third connecting rod 753. An elastic element may be arranged on the elastic support portion 7531, and the elastic element may be arranged to connect the third connecting rod 753 and a portion of the body. Depending on the embodiment, the elastic element may be configured as a spring. Since the elastic element connects the third connecting rod 753 and a portion of the body, the distance between the portion of the body and the third connecting rod 753 can be changed.

[0149] Figure 13 is a plan view showing a portion of a suspension device according to an embodiment of the present disclosure. Figure 14 is a perspective view showing a portion of a suspension device according to an embodiment of the present disclosure when viewed from one side. Figure 15 is a perspective view showing a portion of the suspension device according to the embodiment of the present disclosure when viewed from the other side. Figure 16 is an enlarged perspective view showing a portion of a suspension device according to an embodiment of the present disclosure. Figure 17 is a perspective view showing a body connector of a suspension device according to an embodiment of the present disclosure when viewed from one side. Figure 18 is a perspective view showing a body connector of the suspension device according to the embodiment of the present disclosure when viewed from the other side.

[0150] Figures 13 to 18 The suspension device 71, the body connector 710, the main body connector 7110, the body connection hole 7111, the bracket 720, the bushing 760, the body connection bushing 761 and the third link connection bushing 762 are shown in FIG. Figure 11 and Figure 12 The suspension device 71, body connector 710, main body connector 7110, body connection hole 7111, bracket 720, bushing 760, body connection bushing 761 and third link connection bushing 762 shown in FIG are the same. Therefore, the description of the same configuration may be omitted.

[0151] refer to Figures 13 to 18 , the detailed structure of the main connector 710 and the bracket 720 can be seen.

[0152] The body connector 710 may include a main body connector 7110 , a body connection insertion portion 7120 , a body recessed portion 7130 , a body bent portion 7140 , and a coupling reinforcement portion 7150 .

[0153] The main body connector 7110 may include a body connection hole 7111. The body connection hole 7111 may allow one side (e.g., the +Y-axis direction) and the other side (e.g., the -Y-axis direction) of the main body connector 7110 to communicate with each other. Depending on the embodiment, the body connection hole 7111 may be provided on one end of the main body connector 7110, and the body connection insertion portion 7120 may be provided on the other end of the main body connector 7110.

[0154] The bushing 760 may be disposed in the body connection hole 7111. According to an embodiment, the body connection bushing 761 may be disposed in the body connection hole 7111. The body connection bushing 761 may be inserted into the body connection hole 7111 and connected to the body. The body connection bushing 761 may be configured as an elastic element. Because the body connection bushing 761 is inserted into the body connection hole 7111 and connected to the body, the main body connector 7110 provided with the body connection hole 7111 can rotate relative to the body.

[0155] The body connection insertion portion 7120 may be provided in the main body connector 7110 so as to contact the bracket 720. The body connection insertion portion 7120 may be defined as the portion of the main body connector 7110 that contacts the bracket 720. According to an embodiment, the body connection insertion portion 7120 may be inserted into the bracket 720 so that the body connector 710 and the bracket 720 may be integrally provided. Because the body connector 710 and the bracket 720 are integrally provided, a coupling member connecting the body connector 710 and the bracket 720 may not be used.

[0156] A body recessed portion 7130 may be provided in the main body connector 7110, and the body recessed portion is formed to be recessed toward one side (for example, the -Y-axis direction). One or more body recessed portions 7130 may be provided in the main body connector 7110. The body recessed portion 7130 may be arranged in the center portion of the main body connector 7110. The position where the body recessed portion 7130 is arranged is not limited to the center portion of the main body connector 7110, but the body recessed portion 7130 may be arranged at various positions. Since the body recessed portion 7130 is provided in the main body connector 7110, the bending rigidity of the body connector 710 can be increased.

[0157] The body bending portion 7140 may be provided in the main body connector 7110 and bend toward one side (e.g., the -Y axis direction). The body bending portion 7140 may be provided on the exterior portion of the main body connector 7110. Since the body bending portion 7140 is provided in the main body connector 7110, the bending rigidity of the body connector 710 may be increased.

[0158] The coupling reinforcement portion 7150 may be disposed in the main body connector 7110. According to an embodiment, the coupling reinforcement portion 7150 may be disposed in the body connection insertion portion 7120. Since the coupling reinforcement portion 7150 is disposed in the body connection insertion portion 7120, the coupling reinforcement portion 7150 may contact the bracket connector 7250 of the bracket 720.

[0159] The coupling reinforcement portion 7150 may be provided in the body connection insertion portion 7120 in the form of a hole or a protrusion, which may increase the contact area with the bracket connector 7250. Alternatively, a portion of the bracket connector 7250 may be disposed to penetrate the coupling reinforcement portion 7150, or may be disposed to surround the coupling reinforcement portion 7150.

[0160] Thus, the connection strength between the connection reinforcement portion 7150 and the bracket connector 7250 can be improved, the resistance to the shear force generated by the external force on the connection reinforcement portion 7150 and the bracket connector 7250 can be increased, and the rigidity of the suspension device 71 can be increased.

[0161] The coupling reinforcement portion 7150 may include a first coupling reinforcement portion 7151 and a second coupling reinforcement portion 7152. According to an embodiment, the first coupling reinforcement portion 7151 may be arranged to be formed on the surface of the body connection insertion portion 7120, and the second coupling reinforcement portion 7152 may be arranged to be formed on the end of the body connection insertion portion 7120. Figures 19 to 22 The description of the first connection reinforcement portion 7151 will be described later in conjunction with Figures 23 to 25 The description of the second connection reinforcement part 7152 is described in detail.

[0162] The bracket 720 may include a bracket hole 7210 , a link connector 7220 , a caliper connector 7230 , a disc connector 7240 , and a bracket connector 7250 .

[0163] The bracket 720 may be provided with a bracket hole 7210. The bracket hole 7210 allows one side (e.g., the +Y-axis direction) and the other side (e.g., the -Y-axis direction) of the bracket 720 to communicate with each other. The tray 730 may be inserted into the bracket hole 7210. The tray 730 may be inserted into the bracket hole 7210 and fixed to the bracket 720.

[0164] The bracket 720 may be provided with a link connector 7220. The link connector 7220 may connect the bracket 720 and the link 750. The link 750 may be provided to be connected to the bracket 720 via the link connector 7220 and to rotate relative to the bracket 720. The link connector 7220 may include a first link connector 7221, a second link connector 7222, and a third link connector 7223.

[0165] The first link connector 7221 may be provided in the bracket 720. Depending on the embodiment, the first link connector 7221 may be provided on the upper side of the bracket 720 (e.g., in the +Z axis direction). The first link connector 7221 may be provided with a hole into which the first link 751 may be inserted. The first link connector 7221 may be connected to the first link 751, and the first link 751 may rotate relative to the bracket 720 by being connected to the first link connector 7221.

[0166] The second link connector 7222 may be provided in the bracket 720. Depending on the embodiment, the second link connector 7222 may be provided on one side (e.g., in the +X-axis direction) of the lower side (e.g., in the -Z-axis direction) of the bracket 720. The second link connector 7222 may be provided with a hole into which the second link 752 may be inserted. The second link connector 7222 may be connected to the second link 752, and the second link 752 may rotate relative to the bracket 720 by being connected to the second link connector 7222.

[0167] The third link connector 7223 may be provided in the bracket 720. Depending on the embodiment, the third link connector 7223 may be provided on the other side (e.g., the -X axis direction) of the lower side (e.g., the -Z axis direction) of the bracket 720. The third link connector 7223 may be provided with a hole into which the third link 753 may be inserted. The third link connector 7223 may be connected to the third link 753, and the third link 753 may rotate relative to the bracket 720 by being connected to the third link connector 7223.

[0168] The link connector 7220 may be provided with a bushing 760. According to an embodiment, the third link connector 7223 may be provided with a third link connection bushing 762. The third link connection bushing 762 may be connected to the third link 753. The third link 753 may rotate relative to the bracket 720 by being connected to the third link connection bushing 762.

[0169] Brake caliper connector 7230 may be provided in bracket 720. Brake caliper 740 may be connected to brake caliper connector 7230. Depending on the embodiment, brake caliper 740 may be fixed to brake caliper connector 7230, and as disk rotor 7320 moves relative to disk 730, brake caliper 740 may come into contact with and rub against disk rotor 7320, or become spaced apart from disk rotor 7320. Due to the friction between brake caliper 740 and disk 730, the rotation of disk 730 may be slowed down or stopped.

[0170] The tray connector 7240 may be provided in the bracket 720. The tray connector 7240 may be arranged adjacent to the bracket hole 7210. The tray connector 7240 may be provided as a hole extending through the bracket 720. The tray connector 7240 may be provided as one or more holes. The tray connector 7240 may be connected to the tray 730. Depending on the embodiment, a portion of the tray 730 may be fixed to the bracket 720 by extending through the tray connector 7240.

[0171] The bracket connector 7250 may be provided in the bracket 720. The bracket connector 7250 may be connected to the body connector 710. According to an embodiment, the body connector 710 may be inserted into the bracket connector 7250.

[0172] The body connector 710 may be made of a material including a first material. According to an embodiment, the first material may be a material including at least one of iron, iron alloy, carbon fiber, and plastic, or a combination thereof.

[0173] The bracket 720 may be made of a material including a second material different from the first material. According to an embodiment, the second material may be provided as a material including at least one of aluminum, aluminum alloy, carbon fiber, and plastic, or a combination thereof.

[0174] By providing the body connector 710, it is possible to manufacture the bracket 720 integrally connected to the body connector 710. Hereinafter, a method of manufacturing the suspension device 71 provided with the body connector 710 and the bracket 720 will be described.

[0175] Figure 19 is a cross-sectional view illustrating a first coupling reinforcement portion of the suspension device according to the first embodiment of the present disclosure. Figure 20 is a sectional view showing a first coupling reinforcement portion of a suspension device according to a second embodiment of the present disclosure. Figure 21 is a sectional view showing a first coupling reinforcement portion of a suspension device according to a third embodiment of the present disclosure. Figure 22 is a sectional view showing a first coupling reinforcement portion of a suspension device according to a fourth embodiment of the present disclosure.

[0176] Figures 19 to 22 The body connection insertion portion 7120, the first bracket connection member 7251 and the second bracket connection member 7252 shown in FIG. Figures 11 to 18 The body connection insertion portion 7120, the first bracket connection member 7251, and the second bracket connection member 7252 shown in FIG are the same. Therefore, the description of the same configuration may be omitted.

[0177] Figures 19 to 22 Several embodiments of the first coupling reinforcement portion 7151 are shown.

[0178] refer to Figure 19 , the first coupling reinforcement portion 7151 can be configured as a coupling reinforcement hole 7151-1. According to an embodiment, the coupling reinforcement hole 7151-1 can be configured as a hole that passes through the body connection insertion portion 7120. The coupling reinforcement hole 7151-1 is configured as a hole that passes through the body connection insertion portion 7120. The bracket connector 7250 can be inserted into the coupling reinforcement hole 7151-1. A plurality of coupling reinforcement holes 7151-1 can be provided. The size of the coupling reinforcement hole 7151-1 can vary, and the plurality of coupling reinforcement holes 7151-1 can have different sizes.

[0179] The bracket connector 7250 may include a first bracket connecting member 7251 and a second bracket connecting member 7252 .

[0180] The first bracket connection member 7251 may be disposed to contact a surface of the body connection insertion portion 7120. According to an embodiment, the first bracket connection member 7251 may be disposed to contact top and bottom surfaces of the body connection insertion portion 7120.

[0181] The second bracket connecting member 7252 can be inserted into the coupling reinforcement hole 7151-1 and is arranged to connect to the first bracket connecting member 7251. Because the second bracket connecting member 7252 is inserted into the coupling reinforcement hole 7151-1, the contact area between the body connecting insert portion 7120 and the bracket connector 7250 can be increased, and the coupling strength between the body connecting insert portion 7120 and the bracket connector 7250 can be improved. As a result, the resistance to shear force generated by external force between the body connecting insert portion 7120 and the bracket connector 7250 can be increased, the rigidity of the suspension device 71 can be increased, and the durability of the suspension device 71 can be improved.

[0182] refer to Figure 20 , the first connection reinforcement portion 7151 can be set as a connection reinforcement burr 7151-2. According to an embodiment, the connection reinforcement burr 7151-2 can be set as a hole that passes through the body connection insertion portion 7120, and can be set to extend from the surface of the body connection insertion portion 7120 and protrude in one direction. The connection reinforcement burr 7151-2 can be set to the surface of the body connection insertion portion 7120 and protrude from the surface of the body connection insertion portion in one direction or another direction. A plurality of connection reinforcement burrs 7151-2 can be set. According to an embodiment, a plurality of connection reinforcement burrs 7151-2 can protrude from the surface of the body connection insertion portion 7120 in different directions.

[0183] The angle formed between the surface of the body connection insertion portion 7120 and the direction of the coupling reinforcement burr 7151-2 protrusion may be greater than 0 degrees and less than 180 degrees, but is not limited thereto. According to an embodiment, the angle formed between the surface of the body connection insertion portion 7120 and the direction of the coupling reinforcement burr 7151-2 protrusion may be approximately 90 degrees.

[0184] A plurality of coupling reinforcement burrs 7151-2 may be provided. The size of the coupling reinforcement burrs 7151-2 and the protrusion length of the coupling reinforcement burrs 7151-2 may be varied.

[0185] The second bracket connecting member 7252 can be inserted into the coupling reinforcement hole 7151-1 and is arranged to connect to the first bracket connecting member 7251. Since the second bracket connecting member 7252 is inserted into the coupling reinforcement burr 7151-2, the contact area between the body connecting insert portion 7120 and the bracket connector 7250 can be increased, and the coupling strength between the body connecting insert portion 7120 and the bracket connector 7250 can be improved. As a result, the resistance to shear force generated by external force between the body connecting insert portion 7120 and the bracket connector 7250 can be increased, the rigidity of the suspension device 71 can be increased, and the durability of the suspension device 71 can be improved.

[0186] refer to Figure 21 The first coupling reinforcement portion 7151 may be configured as a coupling reinforcement forming unit 7151-3. The coupling reinforcement forming unit 7151-3 may be configured to extend from the surface of the body connection insertion portion 7120. According to an embodiment, the coupling reinforcement forming unit 7151-3 may be configured to be substantially square, trapezoidal, or ridged.

[0187] A plurality of coupling reinforcement forming units 7151-3 may be provided, and the plurality of coupling reinforcement forming units 7151-3 may protrude in different directions.

[0188] The angle formed between the surface of the body connection insertion portion 7120 and the direction of the protrusion of the coupling reinforcement forming unit 7151-3 can be greater than 0 degrees and less than 180 degrees, but is not limited thereto. According to an embodiment, the angle formed between the surface of the body connection insertion portion 7120 and the direction of the protrusion of the coupling reinforcement forming unit 7151-3 can be approximately 45 degrees.

[0189] A recessed space may be provided on the opposite side of the protruding coupling reinforcement forming unit 7151-3. A third bracket connection member 7252-1 may be disposed in the recessed space relative to the coupling reinforcement forming unit 7151-3. Since the coupling reinforcement forming unit 7151-3 may be provided to extend from the surface of the body connection insert portion 7120, the contact area between the body connection insert portion 7120 and the bracket connector 7250 may be increased, thereby improving the coupling strength between the body connection insert portion 7120 and the bracket connector 7250.

[0190] refer to Figure 22 The first coupling reinforcement portion 7151 may be configured as a coupling reinforcement forming unit hole 7151-4. The coupling reinforcement forming unit hole 7151-4 may be configured to extend from the surface of the body connection insertion portion 7120. According to an embodiment, the coupling reinforcement forming unit hole 7151-4 may be configured to be substantially square, trapezoidal, or ridged.

[0191] The connection reinforcement forming unit hole 7151-4 can be provided in the form of a combination of the connection reinforcement forming unit 7151-3 and the connection reinforcement hole 7151-1.

[0192] A plurality of coupling reinforcement forming unit holes 7151-4 may be provided, and the plurality of coupling reinforcement forming unit holes 7151-4 may protrude in different directions.

[0193] A recessed space may be provided on the opposite side of the protruding direction of the coupling reinforcement forming unit hole 7151-4. A third bracket connecting member 7252-1 may be disposed in the recessed space of the coupling reinforcement forming unit hole 7151-4. The coupling reinforcement forming unit hole 7151-4 is configured to extend from the surface of the body connection insertion portion 7120, and the second bracket connecting member 7252 is disposed to penetrate the coupling reinforcement forming unit hole 7151-4. This increases the contact area between the body connection insertion portion 7120 and the bracket connector 7250, and improves the coupling strength between the body connection insertion portion 7120 and the bracket connector 7250.

[0194] Figure 23 is a perspective view showing a body connector of the suspension device according to the embodiment of the present disclosure when viewed from the other side. Figure 24 is a cross-sectional view showing an end portion of a second coupling reinforcement portion of the suspension device according to the first embodiment of the present disclosure. Figure 25 is a cross-sectional view illustrating an end portion of a second coupling reinforcement portion of a suspension device according to a second embodiment of the present disclosure.

[0195] Figures 23 to 25The body connector 710, the main body connector 7110, the body connection insertion portion 7120, the first bracket connection member 7251 and the second bracket connection member 7252 shown in FIG. Figures 11 to 22 The body connector 710, the main body connector 7110, the body connection insertion portion 7120, the first bracket connection member 7251, and the second bracket connection member 7252 shown in FIG are the same. Therefore, the description of the same configuration may be omitted.

[0196] Figures 23 to 25 Several embodiments of the second coupling reinforcement portion 7152 are shown.

[0197] refer to Figure 23 , the second coupling reinforcement portion 7152 may be disposed on the end of the body connection insertion portion 7120. According to an embodiment, the body connection hole 7111 may be provided on one side of the body connection insertion portion 7120, and the second coupling reinforcement portion 7152 may be provided on the other side of the body connection insertion portion 7120.

[0198] The second coupling reinforcement portion 7152 can extend from the body connection insertion portion 7120. The angle formed between the direction in which the second coupling reinforcement portion 7152 extends and the surface of the body connection insertion portion 7120 can be approximately 0 degrees or more and 180 degrees or less. Because the second coupling reinforcement portion 7152 is arranged to extend from the body connection insertion portion 7120, the contact area between the body connector 710 and the bracket 720 can be increased, and the coupling strength between them can be improved. In addition, the resistance to shear force generated by external forces can be increased, and the rigidity and durability of the suspension device 71 can be improved.

[0199] refer to Figure 24 , the second connection reinforcement portion 7152 can be set as a connection reinforcement flange 7152-1. The connection reinforcement flange 7152-1 can be set to extend from the end of the body connection insertion portion 7120. The connection reinforcement flange 7152-1 can be set to be bent from the body connection insertion portion 7120. According to an embodiment, the connection reinforcement flange 7152-1 and the body connection insertion portion 7120 can roughly form an "L" shape in the alphabet. Since the connection reinforcement flange 7152-1 and the body connection insertion portion 7120 roughly form an "L" shape in the alphabet, the first bracket connection member 7251 can be arranged to surround the connection reinforcement flange 7152-1. Therefore, the contact area of ​​the body connector 710 and the bracket 720 can be increased, and the connection strength between them can be improved. In addition, the resistance to shear force generated by external force can be increased, and the rigidity and durability of the suspension device 71 can be improved.

[0200] refer to Figure 25, the second connection reinforcement portion 7152 can be set as a connection reinforcement bead 7152-2. The connection reinforcement bead 7152-2 can be set to extend from the end of the body connection insertion portion 7120. The connection reinforcement bead 7152-2 can be set to be bent from the body connection insertion portion 7120. According to an embodiment, the connection reinforcement bead 7152-2 and the body connection insertion portion 7120 can be roughly formed in the shape of a "C" in the alphabet. Since the connection reinforcement bead 7152-2 and the body connection insertion portion 7120 are roughly formed in the shape of a "C" in the alphabet, the first bracket connection member 7251 can be arranged to surround the connection reinforcement bead 7152-2. Therefore, the contact area between the body connector 710 and the bracket 720 can be increased, and the connection strength between them can be improved. In addition, the resistance to shear force generated by external force can be increased, and the rigidity and durability of the suspension device 71 can be improved.

[0201] Figure 26 is a flowchart illustrating a method of manufacturing a suspension device according to an embodiment of the present disclosure. Figure 27 is a perspective view illustrating inserting a body connector of a suspension device into a mold according to an embodiment of the present disclosure.

[0202] exist Figure 26 and Figure 27 The body connector 710, main body connector 7110, body connection hole 7111, body connection insertion portion 7120, body concave portion 7130, body bent portion 7140, coupling reinforcement portion 7150 and bracket 720 used in the description are the same as those in FIG. Figures 11 to 25 The body connector 710, main body connector 7110, body connection hole 7111, body connection insertion portion 7120, body concave portion 7130, body bent portion 7140, coupling reinforcement portion 7150 and bracket 720 shown in FIG are the same. Therefore, the description of the same configuration may be omitted.

[0203] refer to Figure 26 and Figure 27 The manufacturing method of the suspension device 71 may include forming a coupling reinforcement portion 7150 in the main body connector 7110 ( Figure 26 (S2610 in FIG. 2 ). Depending on the embodiment, a coupling reinforcement portion 7150 may be formed in the body connection insertion portion 7120. The coupling reinforcement portion 7150 may be formed in the body connection insertion portion 7120 to enhance the coupling strength between the body connector 710 and the bracket 720. This may increase resistance to shear forces generated by external forces between the body connector 710 and the bracket 720. The coupling reinforcement portion 7150 may include a first coupling reinforcement portion 7151 and / or a second coupling reinforcement portion 7152.

[0204] The step of forming the coupling reinforcement portion (S2610) may include forming a first coupling reinforcement portion 7151 on the surface of the body connection insertion portion 7120. The first coupling reinforcement portion 7151 may be formed on the surface of the body connection insertion portion 7120 to increase the contact area between the body connector 710 and the bracket 720. The first coupling reinforcement portion 7151 may be formed in various ways, such as drilling, milling, burring, extrusion, etc.

[0205] The first coupling reinforcement portion 7151 may include a coupling reinforcement hole 7151 - 1 , a coupling reinforcement burr 7151 - 2 , a coupling reinforcement forming unit 7151 - 3 and / or a coupling reinforcement forming unit hole 7151 - 4 .

[0206] A coupling reinforcement hole 7151-1 may be provided to penetrate the body connection insertion portion 7120. A plurality of coupling reinforcement holes 7151-1 may be provided. The shape, size, and number of the coupling reinforcement holes 7151-1 may vary.

[0207] The coupling reinforcement burr 7151-2 can be provided as a hole extending through the body connection insertion portion 7120 and can be provided to protrude in one direction relative to the body connection insertion portion 7120. A plurality of coupling reinforcement burrs 7151-2 can be provided. The shape, size, number, and protruding direction of the coupling reinforcement burrs 7151-2 can vary.

[0208] The connection reinforcement forming unit 7151-3 may protrude from the body connection insertion portion 7120. The protruding direction of the connection reinforcement forming unit 7151-3 may form a predetermined angle with the surface of the body connection insertion portion 7120. Thus, the connection reinforcement forming unit 7151-3 may be arranged to be inclined relative to the body connection insertion portion 7120. A plurality of connection reinforcement forming units 7151-3 may be provided. The shape, size, and number of the connection reinforcement forming units 7151-3 may vary.

[0209] The coupling reinforcement forming unit hole 7151-4 can be provided as a hole penetrating the body connection insertion portion 7120 and can be provided to protrude in one direction relative to the body connection insertion portion 7120. A plurality of coupling reinforcement forming unit holes 7151-4 can be provided. The shape, size, number, and protruding direction of the coupling reinforcement forming unit holes 7151-4 can be varied.

[0210] The step of forming the coupling reinforcement portion (S2610) may include forming a second coupling reinforcement portion 7152 on the end of the body connection insertion portion 7120. The second coupling reinforcement portion 7152 may be formed on the end of the body connection insertion portion 7120 to increase the contact area between the body connector 710 and the bracket 720. The second coupling reinforcement portion 7152 may be formed in various ways, such as by extrusion.

[0211] The second coupling reinforcement portion 7152 may include a coupling reinforcement flange 7152 - 1 and / or a coupling reinforcement bead 7152 - 2 .

[0212] The coupling reinforcement flange 7152-1 may extend from the body connection insertion portion 7120 and bend in one direction. The angle formed between the coupling reinforcement flange 7152-1 and the body connection insertion portion 7120 may be approximately 0 degrees or more and 180 degrees or less. According to an embodiment, the angle formed between the coupling reinforcement flange 7152-1 and the body connection insertion portion 7120 may be approximately 90 degrees. The coupling reinforcement flange 7152-1 and the body connection insertion portion 7120 may form a generally "L" shape. The length, protrusion height, and placement position of the coupling reinforcement flange 7152-1 may vary.

[0213] The coupling reinforcement bead 7152-2 can extend from the body connection insertion portion 7120 and bend in one direction. The angle formed between the coupling reinforcement bead 7152-2 and the body connection insertion portion 7120 can be about 0 degrees or more to 180 degrees or less. According to an embodiment, the angle formed between the coupling reinforcement bead 7152-2 and the body connection insertion portion 7120 can be about 90 degrees. The coupling reinforcement bead 7152-2 can be bent at two points. Therefore, the coupling reinforcement bead 7152-2 and the body connection insertion portion 7120 can form a roughly "C" shape. The length, protrusion height and placement position of the coupling reinforcement bead 7152-2 can be changed.

[0214] The manufacturing method of the suspension device 71 may include an inserting step of arranging the body connector 710 in the mold 7M ( Figure 26 The body connector 710 may be made of a material including a first material. The body connector insert 7120 of the body connector 710 may be inserted into the mold 7M. Since the body connector insert 7120 is inserted into the mold 7M, the body connector insert 7120 may be formed in the casting step ( Figure 26 S2630 in the process) is in contact with a material containing a second material.

[0215] The manufacturing method of the suspension device 71 may include a casting step ( Figure 26(S2630 in FIG. 26 ). A material including a second material may be injected into the mold 7M through the mold hole 7MH of the mold 7M. The first material of the body connector 710 and the second material of the bracket 720 may be different from each other. The mold 7M may be configured to correspond to the shape of the bracket 720.

[0216] During the casting step ( S2630 ), the body connection insert 7120 provided in the body connector 710 can be connected to the bracket connector 7250 of the bracket 720 . According to embodiments, the body connection insert 7120 can be inserted into the bracket connector 7250 . When the body connection insert 7120 is inserted into the bracket connector 7250 , a connection strength is generated between the body connection insert 7120 and the bracket connector 7250 , forming a single unit with the body connector 710 and the bracket 720 . Because the body connector 710 and the bracket 720 can be formed as a single unit, coupling members (e.g., bolts, nuts, etc.) that couple the body connector 710 and the bracket 720 can be eliminated. Consequently, the mass of the suspension device 71 can be reduced, and the process of coupling the body connector 710 and the bracket 720 is eliminated, thereby reducing the manufacturing cost of the suspension device 71 .

[0217] The manufacturing method of the suspension device 71 may include a bushing arrangement step ( Figure 26 The bushing 760 may include a body connecting bushing 761 and a third link connecting bushing 762 .

[0218] The bushing arrangement step (S2640) may include arranging the body connection bushing 761 in the body connection hole 7111. According to an embodiment, the bushing arrangement step (S2640) may include inserting the body connection bushing 761 into the body connection hole 7111.

[0219] The bushing arrangement step (S2640) may include arranging the third link connection bushing 762 in the third link connector 7223. According to an embodiment, the bushing arrangement step (S2640) may include inserting the third link connection bushing 762 into the third link connector 7223.

[0220] The suspension device 71 manufactured by the suspension device manufacturing method can be made lightweight, thereby improving ride comfort. In addition, the tolerance occurring in the suspension device 71 can be minimized, and the rigidity can be increased. In addition, the manufacturing cost of the suspension device 71 can be reduced.

[0221] Although the present disclosure has been described with reference to the embodiments shown in the accompanying drawings, the embodiments are only for illustrative purposes, and those skilled in the art will appreciate that various modifications and other equivalent embodiments are possible. In addition, the present disclosure may also be used in other fields.

Claims

1. A suspension device, characterized in that: The suspension device comprises: A body connector, comprising a main body connector provided with a body connection hole; and A bracket, wherein the bracket includes: a bracket hole extending therethrough and into which a wheel bearing can be inserted; a brake caliper connector connected to the brake caliper; and a link connector connected to the link, and the bracket is configured to rotate relative to the body connection hole.

2. The suspension device according to claim 1, characterized in that The connecting rod connector comprises: a first connecting rod connector, disposed on an upper side of the bracket; a second link connector disposed on one side of a lower side of the bracket; and The third connecting rod connector is arranged on the other side of the lower side of the bracket.

3. The suspension device according to claim 2, characterized in that The connecting rod comprises: a first link connected to the first link connector so as to be rotatable; a second link connected to the second link connector so as to be rotatable; and A third link is connected to the third link connector so as to be rotatable.

4. The suspension device according to claim 1, wherein: The body connection hole is provided on one side of the main body connector, and A body connection insertion portion provided on the other side of the main body connector is inserted into and fixed in the bracket connector of the bracket.

5. The suspension device according to claim 4, characterized in that The body connection insertion portion includes a body latch portion formed as a recess, and The bracket includes a first bracket connecting member inserted into the body latch portion.

6. The suspension device according to claim 4, characterized in that The suspension device includes a body connection insertion hole through which one side and the other side of the body connection insertion portion communicate with each other, wherein the bracket connector includes a second bracket connection member penetrating the body connection insertion hole.

7. The suspension device according to claim 1, wherein: The body connector comprises a first material, and The bracket includes a second material different from the first material.

8. A suspension device, characterized in that: The suspension device comprises: a body connector comprising a main body connector provided with a body connection insertion portion and a coupling reinforcement portion arranged on the body connection insertion portion; and A bracket, wherein the bracket includes: a bracket connector, into which the body connection insertion portion is inserted and the bracket connector is in contact with the coupling reinforcement portion; a bracket hole into which a wheel bearing can be inserted; a brake caliper connector connected to the brake caliper; and a connecting rod connector connected to the connecting rod.

9. The suspension device according to claim 8, characterized in that The coupling reinforcement portion includes a first coupling reinforcement portion formed on a surface of the body connection insertion portion to enhance coupling strength between the body connection insertion portion and the bracket connector.

10. The suspension device according to claim 9, characterized in that: The first coupling reinforcement portion includes a coupling reinforcement hole penetrating the body connection insertion portion, and The bracket connector includes a first bracket connection member contacting the coupling reinforcement hole and a second bracket connection member disposed to penetrate the coupling reinforcement hole.

11. The suspension device according to claim 9, characterized in that: The first coupling reinforcement portion includes a coupling reinforcement burr that penetrates the body connection insertion portion and protrudes in one direction relative to the body connection insertion portion, and The bracket connector includes a first bracket connection member in contact with the coupling reinforcement burr and a second bracket connection member arranged to penetrate the coupling reinforcement burr.

12. The suspension device according to claim 9, wherein: The first coupling reinforcement portion includes a coupling reinforcement forming unit that is arranged to protrude in one direction and be inclined with respect to the body connection insertion portion, and The bracket connector includes a first bracket connection member contacting the coupling reinforcement forming unit and a third bracket connection member provided on the coupling reinforcement forming unit.

13. The suspension device according to claim 9, characterized in that: The first coupling reinforcement portion includes a coupling reinforcement forming unit hole, the coupling reinforcement forming unit hole is arranged to protrude in one direction and be inclined relative to the body connection insertion portion, and the coupling reinforcement forming unit hole is provided with a hole, and The bracket connector includes a first bracket connection member contacting the coupling reinforcement forming unit hole and a second bracket connection member penetrating the coupling reinforcement forming unit hole.

14. The suspension device according to claim 8, wherein The suspension device includes a second coupling reinforcement portion formed on an end portion of the body connection insertion portion to enhance coupling strength between the body connection insertion portion and the bracket connector.

15. The suspension device according to claim 14, characterized in that: The second coupling reinforcement portion includes a coupling reinforcement flange extending from an end portion of the body connection insertion portion and bent in one direction, and The bracket connector includes a first bracket connection member disposed around the coupling reinforcement flange.

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