Suspension device

Abstract

Suspension device which includes: a body connector having a main body connector which is provided with a body connection hole; and a support, the support comprising: a support hole extending from the body connector into which a wheel bearing is inserted; a caliper connector connected to a caliper; and a link connector connected to a link and configured to rotate with respect to the body connector hole.

Description

Background area

[0001] Example embodiments of the present disclosure relate to a suspension device, and more particularly to a suspension device that can reduce unsprung mass, tolerance, and manufacturing costs. Description of related technology

[0002] As environmentally friendly vehicles are in demand, hybrid or electric vehicles with engines and batteries installed in them are increasingly being used.

[0003] Due to the significant inclusion of batteries in hybrid or electric vehicles, hybrid or electric vehicles are heavier than typical internal combustion engine vehicles by an amount equal to the weight of the batteries. The increased weight of the vehicles requires increased suspension stiffness. The increased stiffness of the suspension requires increased suspension weight, which in turn increases unsprung mass, leading to a reduction in vehicle comfort. Thus, there is a need for various technologies that can reduce unsprung mass to improve vehicle comfort.

[0004] There is also a need for technologies that can maintain suspension stiffness while reducing unsprung mass. The related art of the present disclosure is disclosed in Korean

[0005] Patent Application No. 10-2015-0066110 (published on June 16, 2015, entitled “Structure of Trailing Arm”). Summary

[0006] An object of the present disclosure is to provide a suspension device that can reduce unsprung masses.

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

[0008] Furthermore, an object of the present disclosure is to provide a suspension device which can increase the rigidity.

[0009] Furthermore, an object of the present disclosure is to provide a suspension device which can increase stiffness while reducing unsprung mass.

[0010] Furthermore, an object of the present disclosure is to provide a suspension device which can increase the coupling strength between components.

[0011] A suspension device according to the present disclosure includes: a body connector having a main body connector provided with a body connection hole; and a bracket, the bracket including: a bracket hole extending from the body connector and into which a wheel bearing is inserted; a brake caliper connector connected to a brake caliper; and a link connector connected to a link and configured to rotate with respect to the body connection hole.

[0012] The link connector may include: a first link connector provided on a top surface of the carrier; a second link connector provided on one side of a bottom surface of the carrier; and a third link connector provided on the other side of the bottom surface of the carrier.

[0013] The link may include: a first link connected to the first link connector for rotation; a second link connected to the second link connector for rotation; and a third link connected to the third link connector for rotation.

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

[0015] The body connection insertion portion may include a body locking portion formed in a recessed manner, and the bracket may include a first bracket connection member inserted into the body locking 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 beam connector may include a second beam connection member penetrating the body connection insertion hole.

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

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

[0019] A manufacturing method of the suspension device according to the present disclosure includes: an inserting step in which a body connector is installed in a mold, the body connector including a main body connector provided with a body connection hole and a body connection insertion portion, and comprising a first material; and a molding step in which a bracket is manufactured by injecting a second material different from the first material into the mold, the bracket comprising: a bracket connector that comes into contact with the body connection insertion portion; a bracket hole into which a wheel bearing is inserted; a caliper connector connected to a brake caliper; and a link connector connected to a link.

[0020] The manufacturing method may further include a bushing installation step of press-fitting a bushing into the link connector and the body connection hole.

[0021] A suspension device according to the present disclosure includes: a body connector having a main body connector provided with a body connection insertion portion, and a coupling reinforcement portion provided on the body connection insertion portion; and a bracket, the bracket comprising: a bracket connector into which the body connection insertion portion is inserted and which comes into contact with the coupling reinforcement portion; a bracket hole into which a wheel bearing is inserted; a brake caliper connector connected to a brake caliper; and a link connector connected to a link.

[0022] The coupling reinforcing portion may include a first coupling reinforcing portion formed on a surface of the body joint inserting portion to increase the coupling strength between the body joint inserting portion and the carrier connector.

[0023] The first coupling reinforcement portion may include a coupling reinforcement hole penetrating the body joint insertion portion, and the carrier connector may include a first carrier connection member that comes into contact with the coupling reinforcement hole and a second carrier connection member configured to penetrate the coupling hole.

[0024] The first coupling reinforcement portion may include a coupling reinforcement ridge that penetrates the body joint insertion portion and protrudes in one direction relative to the body joint insertion portion. The carrier connector may include a first carrier connecting member that comes into contact with the coupling reinforcement ridge and a second carrier connecting member configured to penetrate the coupling reinforcement ridge.

[0025] The first coupling reinforcement portion may include a coupling reinforcement molding unit configured to protrude in one direction and be inclined with respect to the body joint insertion portion, and the carrier connector may include a first carrier connecting member that comes into contact with the coupling reinforcement molding unit and a third carrier connecting member that sits on the coupling reinforcement molding unit.

[0026] The first coupling reinforcement portion may include a coupling reinforcement forming unit hole configured to protrude in a direction inclined with respect to the body joint insertion portion and provided with a hole. The carrier connector may include a first carrier connecting member that comes into contact with the coupling reinforcement forming unit hole and a second carrier connecting member that penetrates the coupling reinforcement forming unit hole.

[0027] The suspension device may include a second coupling reinforcing portion formed on one end of the body joint inserting portion to increase the coupling strength between the body joint inserting portion and the beam connector.

[0028] The second coupling reinforcement portion may include a coupling reinforcement flange extending from one end of the body joint insertion portion and curved in one direction. The carrier connector may include a first carrier connection member configured to surround the coupling reinforcement flange.

[0029] The second coupling reinforcement portion may include a coupling reinforcement abutting edge facing the body joint insertion portion by extending from one end of the body joint insertion portion and at the same time being curved.

[0030] The link connector may include: a first link connector provided on a top surface of the carrier; a second link connector provided on one side of a bottom surface of the carrier; and a third link connector provided on the other side of the bottom surface of the carrier.

[0031] The link may include: a first link connected to the first link connector for rotation; a second link connected to the second link connector for rotation; and a third link connected to the third link connector for rotation.

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

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

[0034] A body connection hole may be provided on one side of the main body connector and the carrier may rotate with respect to the body connection hole.

[0035] A manufacturing method of the suspension device according to the present disclosure includes: an insertion step in which a body connector is installed in a mold, the body connector including a main body connector provided with a body connection insertion portion, and a coupling reinforcement portion provided on the body connection insertion portion and comprising a first material; and a molding step in which a bracket is manufactured by injecting a second material different from the first material into the mold, the bracket including: a bracket connector that comes into contact with the body connection insertion portion; and a link connector connected to a link.

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

[0037] The step of forming the coupling reinforcing portion may include forming a first coupling reinforcing portion on a surface of the body joint inserting portion to increase the coupling strength between the body joint inserting portion and the carrier 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 ridge penetrating the body connection insertion portion and protruding in one direction with respect to the body connection insertion portion.

[0040] The first coupling reinforcement portion may include a coupling reinforcement molding unit configured to protrude in one direction and be inclined with respect to the body connecting ice net hole.

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

[0042] The step of forming the coupling reinforcing portion may include forming a second coupling reinforcing portion in one end of the body joint inserting portion to increase the coupling strength between the body joint inserting portion and the carrier connector.

[0043] The second coupling reinforcing portion may include a coupling reinforcing flange extending from one end of the body joint inserting portion and curved in one direction.

[0044] The second coupling reinforcement portion may include a coupling reinforcement abutting edge facing the body joint insertion portion by extending from and being curved at one end of the body joint insertion portion.

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

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

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

[0048] In addition, the suspension device and its manufacturing method according to the present disclosure can reduce manufacturing costs.

[0049] Furthermore, the suspension device and its manufacturing method according to the present disclosure can maintain the rigidity of the suspension device while reducing its weight. Short description of the drawings Fig. 1 is a perspective view illustrating a suspension device according to an embodiment of the present disclosure as viewed from one side. Fig. 2 is a perspective view illustrating the suspension device according to an embodiment of the present disclosure viewed from the other side. Fig. 3 is a plan view illustrating a portion of the suspension device according to an embodiment of the present disclosure. Fig. 4 is a perspective view illustrating the portion of the suspension device according to an embodiment of the present disclosure viewed from one side. Fig. 5 is a perspective view illustrating the portion of the suspension device according to an embodiment of the present disclosure viewed from the other side. Fig. 6 is an enlarged perspective view illustrating the portion of the suspension device according to an embodiment of the present disclosure. Fig. 7 is a perspective view illustrating a body connector of the suspension device according to an embodiment of the present disclosure as viewed from the other side. Fig. 8 is a perspective view illustrating the body connector of the suspension device according to an embodiment of the present disclosure as viewed from the other side. Fig. 9 is a flowchart illustrating a manufacturing method of the suspension device according to an embodiment of the present disclosure. Fig. 10 is a perspective view illustrating insertion of the body connector of the suspension device into a mold according to an embodiment of the present disclosure. Fig. 11 is a perspective view illustrating a suspension device according to an embodiment of the present disclosure as viewed from one side. Fig. 12 is a perspective view illustrating the suspension device according to an embodiment of the present disclosure as viewed from the other side. Fig. 13 is a plan view illustrating a portion of the suspension device according to an embodiment of the present disclosure. Fig. 14 is a perspective view illustrating the portion of the suspension device according to an embodiment of the present disclosure viewed from one side. Fig. 15 is a perspective view illustrating the portion of the suspension device according to an embodiment of the present disclosure viewed from the other side. Fig. 16 is an enlarged perspective view illustrating the portion of the suspension device according to an embodiment of the present disclosure. Fig. 17 is a perspective view illustrating a body connector of the suspension device according to an embodiment of the present disclosure as viewed from one side. Fig. 18 is a perspective view illustrating the body connector of the suspension device according to an embodiment of the present disclosure as viewed from the other side. Fig. 19 is a cross-sectional view illustrating a first coupling reinforcing portion of the suspension device according to a first embodiment of the present disclosure. Fig. 20 is a cross-sectional view illustrating a first coupling reinforcing portion of the suspension device according to a second embodiment of the present disclosure. Fig. 21 is a cross-sectional view illustrating a first coupling reinforcing portion of the suspension device according to a third embodiment of the present disclosure. Fig. 22 is a cross-sectional view illustrating a first coupling reinforcing portion of the suspension device according to a fourth embodiment of the present disclosure. Fig. 23 is a perspective view illustrating a body connector of the suspension device according to an embodiment of the present disclosure as viewed from the other side. Fig. 24 is a cross-sectional view illustrating one end of a second coupling reinforcing portion of the suspension device according to the first embodiment of the present disclosure. Fig. 25 is a cross-sectional view illustrating one end of a second coupling reinforcing portion of the suspension device according to the second embodiment of the present disclosure. Fig. 26 is a flowchart illustrating a manufacturing method of the suspension device according to an embodiment of the present disclosure. Fig. 27 is a perspective view illustrating insertion of the body connector suspension device into a mold according to an embodiment of the present disclosure. Detailed description

[0050] Exemplary embodiments of a suspension device and its manufacturing method are described below with reference to the accompanying drawings. It should be noted that the thickness of each line or the size of each component in the drawings may be exaggerated for clarity and simplicity of description. Furthermore, the terms used herein are defined in consideration of functions of the present disclosure, and these terms may change depending on the intentions or experience of a user or operator. Therefore, definitions of these terms must be made based on the content herein.

[0051] Fig. 1 is a perspective view illustrating a suspension device according to an embodiment of the present disclosure as viewed from one side. Fig. 2 is a perspective view illustrating the suspension device according to an embodiment of the present disclosure viewed from the other side.

[0052] Fig. 1 and Fig. 2 illustrate a suspension device 1. The suspension device may include a body connector 10, a bracket 20, a disc 30, a brake caliper 40, a link 50, and a bushing 60.

[0053] The body connector 10 may be arranged between a body (not shown) of a vehicle and the support 20 to connect the body (not shown) and the support 20.

[0054] 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 one embodiment, the body connection hole 111 may be provided on one end of the main body connector 110. The body connection hole 111 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 110 to communicate with each other. The socket 60 may be installed in the body connection hole 111. According to one embodiment, a body connection socket 61 may be installed in the body connection hole 111. The body connection socket 61 may be inserted into the body connection hole 111. The main body connector 110 and the body may be connected by the body connection socket 61.Since the body connection socket 61 is installed 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 socket 61 installed 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 socket 61. Consequently, the bracket 20 can move relative to the body.

[0055] The main body connector 110 can be inserted into the carrier 20 and secured to the carrier 20. Since the main body connector 110 is inserted into the carrier 20 and secured thereto, the main body connector 110 and the carrier 20 can be integrally formed and movable. Since the main body connector 110 is inserted into the carrier 20 and is integrally formed therewith, no coupling element (e.g., bolt, nut, etc.) connecting the body connector 10 and the carrier 20 needs to be used.

[0056] Since the coupling member is not used, the unsprung mass of the suspension device 1 can be reduced by the mass of the coupling member and the comfort of driving the vehicle can be improved.

[0057] In addition, since the coupling element is not used, a tolerance between the body connector 10 and the carrier 20 can be reduced.

[0058] In addition, since no method for coupling the body connector 10 and the bracket 20 is required, the manufacturing process can be simplified and the unit cost of the suspension device 1 can be reduced.

[0059] The carrier 20 can be connected to the disc 30, the brake caliper 40 and the connecting member 50.

[0060] The disk 30 may be arranged on one side of the carrier 20 (e.g., 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 carrier 20 and the disk rotor 320. The disk rotor 320 may rotate relative to the carrier 20, and the disk cover 310 may be fixed to the carrier 20.

[0061] The brake caliper 40 may be configured to be connected to the carrier 20. A portion of the brake caliper 40 may be fixed to the carrier 20 and move to contact the disc rotor 320 of the disc 30. When the brake caliper 40 moves to contact the disc rotor 320 rotating relative to the carrier 20, friction generated between the brake caliper 40 and the disc rotor 320 may reduce a rotational speed of the disc rotor 320 or stop the rotation of the disc rotor 320.

[0062] The connecting link 50 may be configured to be connected to the carrier 20. One end of the connecting link 50 may be connected to the carrier 20, and the other end may be connected to the body. The connecting link 50 may rotate relative to the carrier 20 and the body. As the connecting link 50 rotates relative to the carrier 20 and the body, the carrier 20 may move relative to the body. The connecting link 50 may include a first connecting link 51, a second connecting link 52, and a third connecting link 53.

[0063] The first connecting link 51 may be arranged on a top surface (e.g., the +Z-axis direction) of the support 20. The second connecting link 52 may be arranged on a portion (e.g., the +X-axis direction) of a bottom surface (e.g., the -Z-axis direction) of the support 20. The third connecting link 53 may be arranged on another portion (e.g., the -X-axis direction) of the bottom surface (e.g., the -Z-axis direction) of the support 20.

[0064] The first link 51, the second link 52, and the third link 53 may be connected to the carrier 20 and rotate with respect to the carrier 20. According to one embodiment, one end of the first link 51, one end of the second link 52, and one end of the third link 53 may be connected to the carrier 20 and rotate with respect to the carrier 20, and the other end of the first link 51, the other end of the second link 52, and the other end of the third link 53 may be connected to the body and rotate with respect to the body. Since the first link 51, the second link 52, and the third link 53 rotate with respect to the carrier 20 and the body, the carrier 20 can move relative to the body.

[0065] The third link 53 may include an elastic support portion 531. The elastic support portion 531 may be disposed between one end and the other end of the third link 53. An elastic member may be disposed on the elastic support portion 531, and the elastic member may be configured to connect the third link 53 and a portion of the body. According to one embodiment, the elastic member may be provided as a spring. Since the elastic member connects the third link 53 and the portion of the body, the distance between the portion of the body and the third link 53 may vary.

[0066] Fig. 3 is a plan view illustrating a portion of the suspension device according to an embodiment of the present disclosure. Fig. 4 is a perspective view illustrating the portion of the suspension device according to an embodiment of the present disclosure viewed from one side. Fig. 5 is a perspective view illustrating the portion of the suspension device according to an embodiment of the present disclosure viewed from the other side.

[0067] Fig. 6 is an enlarged perspective view illustrating the portion of the suspension device according to an embodiment of the present disclosure. Fig. 7 is a perspective view illustrating a body connector of the suspension device according to an embodiment of the present disclosure as viewed from the other side. Fig. 8 is a perspective view illustrating the body connector of the suspension device according to an embodiment of the present disclosure as viewed from the other side.

[0068] The suspension device 1, the body connector 10, the main body connector 110, the body connection hole 111, the carrier 20, the bushing 60, the body connection bushing 61 and a third link connection bushing 62, which in Fig. 3 to 8 are the same as the suspension device 1, the body connector 10, the main body connector 110, the body connection hole 111, the carrier 20, the bushing 60, the body connection bushing 61 and the third link connection bushing 62 shown in Fig. 1 and Fig. 2. Thus, the description of the configuration can be omitted.

[0069] Referring to Fig. 3 to 8, a detailed structure of the body connector 10 and the carrier 20 can be seen.

[0070] The body connector 10 may include a main body connector 110, a body connection insertion portion 120, a body recess portion 130, and a body bend portion 140.

[0071] The main body connector 110 may include the body connection hole 111. The body connection hole 111 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 110 to communicate with each other. According to another 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.

[0072] The bushing 60 may be installed in the body connection hole 111. According to one embodiment, the body connection bushing 61 may be installed 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 provided as an elastic member. Since 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 with respect to the body.

[0073] The body connection inserting portion 120 may be provided in the main body connector 110 such that it comes into contact with the carrier 20. The body connection insert 120 may be defined as a portion of the main body connector 110 that comes into contact with the carrier 20. According to one embodiment, the body connection inserting portion 120 may be inserted into the carrier 20 such that the body connector 10 and the carrier 20 can be provided integrally. Since the body connector 10 and the carrier 20 are provided integrally, the coupling member that connects the body connector 10 and the carrier 20 need not be used.

[0074] The body connection insertion portion 120 may be provided with a body locking portion 121 and a body connection insertion hole 122.

[0075] The body locking portion 121 may be provided to have a step toward a center (e.g., the Z-axis direction) of the main body connector 110.

[0076] According to one embodiment, the body locking portion 121 may be provided in a recessed manner. The body locking portion 121 may be provided such that it is recessed into the main body connector 110, and the carrier 20 may be inserted into the body locking portion 121.

[0077] According to one embodiment, the body locking portion 121 may be provided to protrude from the main body connector 110. The body locking portion 121 may be provided to protrude from the main body connector 110, and the body locking portion 121 may be inserted into the carrier 20.

[0078] Since the bracket 20 is inserted into the body locking portion 121 or the body locking portion 121 is inserted into the bracket 20, the coupling strength between the body connector 10 and the bracket 20 can be increased. Furthermore, there can be no clearance between the body connector 10 and the bracket 20.

[0079] The body connection insertion hole 122 can allow 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 can be provided. Since the body connection insertion hole 122 is provided in the main body connector 110, the bracket 20 can be configured to penetrate the body connection insertion hole 122. Since the bracket 20 is configured to penetrate the body connection insertion hole 122, the coupling strength between the body connector 10 and the bracket 20 can increase. In addition, there can be no clearance between the body connector 10 and the bracket 20.

[0080] The body recessed portion 130 may be provided in the main body connector 110 and formed 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 provided in a central portion of the main body connector 110. The location where the body recessed portion 130 is provided is not limited to the central portion of the main body connector 110; the body recessed portion 130 may be provided 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.

[0081] The body curved portion 140 may be provided in the main body connector 110 and may curve toward one side (e.g., the Y-axis direction). The body curved portion 140 may be provided in an 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.

[0082] The carrier 20 may include a carrier hole 210, a link connector 220, a caliper connector 230, a disc connector 240, and a carrier connector 250.

[0083] The support 20 may be provided with the support hole 210. The support hole 210 may allow one side (e.g., the +Y-axis direction) and the other side (e.g., the -Y-axis direction) of the support 20 to communicate with each other. The disc 30 may be inserted into the support hole 210. The disc 30 may be inserted into the support hole 210 and secured to the support 20.

[0084] The carrier 20 may be provided with the link connector 220. The link connector 220 may connect the carrier 20 and the link 50. The link 50 may be provided such that it is connected to the carrier 20 through the link connector 220 and rotates relative to the carrier 20. The link connector 220 may include a first link connector 221, a second link connector 222, and a third link connector 223.

[0085] The first link connector 221 may be provided in the carrier 20. According to one embodiment, the first link connector 221 may be provided on a top surface (e.g., the +Z-axis direction) of the carrier 20. The first link connector 221 may be provided with a hole into which the first link 51 can be inserted. The first link connector 221 may be connected to the first link 51, and the first link 51 may rotate with respect to the carrier 20 by being connected to the first link connector 221.

[0086] The second link connector 222 may be provided in the carrier 20. According to one embodiment, the second link connector 222 may be provided on a side (e.g., the +X-axis direction) of a bottom (e.g., the -Z-axis direction) of the carrier 20. The second link connector 222 may be provided with a hole into which the second link 52 can be inserted. The second link connector 222 may be connected to the second link 52, and the second link 52 may rotate with respect to the carrier 20 by being connected to the second link connector 222.

[0087] The third link connector 223 may be provided in the carrier 20. According to one embodiment, the third link connector 223 may be provided on the other side (e.g., the -X-axis direction) of the bottom side (e.g., the -Z-axis direction) of the carrier 20. The third link connector 223 may be provided with a hole into which the third link 53 can be inserted. The third link connector 223 may be connected to the third link 53, and the third link 53 may rotate with respect to the carrier 20 by being connected to the third link connector 223.

[0088] The link connector 220 may be provided with the socket 60. According to one embodiment, the third link connector 223 may be provided with the third link connection socket 62. The third link connection socket 62 may be connected to the third link 53. The third link 53 may rotate relative to the carrier 20 by being connected to the third link connection socket 62.

[0089] The brake caliper connector 230 may be provided in the carrier 20. The brake caliper 40 may be connected to the brake caliper connector 230. According to one embodiment, the brake caliper 40 may be attached to the brake caliper connector 230, and the brake caliper 40, while rotating relative to the disc rotor 320 of the disc 30, may come into contact with and rub against the disc rotor 320 or be spaced apart from the disc rotor 320. As the brake caliper 40 rubs against the disc rotor 320 of the disc 30, the rotation of the disc 30 may slow down or stop.

[0090] The disc connector 240 may be provided in the carrier 20. The disc connector 240 may be arranged adjacent to the body connection hole 111. The disc connector 240 may be provided as a hole penetrating the carrier 20. The disc connector 240 may be provided as one or more holes. The disc connector 240 may be connected to the disc 30. According to one embodiment, a portion of the disc 30 may be secured to the carrier 20 by penetrating the disc connector 240.

[0091] The carrier connector 250 may be provided in the carrier 20. The carrier connector 250 may be connected to the body connector 10. According to one embodiment, the body connector 10 may be inserted into the carrier connector 250. A first carrier connecting element 251 provided in the carrier connector 250 may be provided in the body locking portion 121 of the body connector 10. The first carrier connecting element 251 may be inserted into the body locking portion 121.

[0092] A second carrier connection member 252 provided in the carrier connector 250 may be installed in the body connection insertion hole 122 of the body connector 10. The second carrier connection member 252 may be inserted into the body connection insertion hole 122. According to one embodiment, the second carrier connection member 252 may penetrate the body connection insertion hole 122. Since the first carrier connection member 251 is installed in the body locking portion 121 and the second carrier connection member 252 is installed in the body connection insertion hole 122, the coupling strength between the body connector 10 and the carrier 20 can be increased. In addition, a clearance between the body connector 10 and the carrier 20 can be decreased.

[0093] The body connector 10 may be made of a material comprising a first material. According to one embodiment, the first material may be provided as a material comprising iron and / or iron alloy and / or carbon fiber and / or plastic, or a combination thereof.

[0094] The carrier 20 may be made of a material that includes a second material different from the first material. According to one embodiment, the second material may be provided as a material that includes aluminum and / or an aluminum alloy and / or carbon fiber and / or plastic, or a combination thereof.

[0095] With the provided body connector 10, the bracket 20 integrally connected to the body connector 10 can be manufactured. Hereinafter, a manufacturing method of the suspension device 1 provided with the body connector 10 and the bracket 20 will be described.

[0096] Fig. 9 is a flowchart illustrating a manufacturing method of the suspension device according to an embodiment of the present disclosure. Fig. 10 is a perspective view illustrating insertion of the body connector of the suspension device into a mold according to an embodiment of the present disclosure.

[0097] The body connector 10, the main body connector 110, the body connection hole 111, the body connection insertion portion 120, the body locking portion 121, the body connection insertion hole 122, the body recess portion 130, the body bend portion 140 and the carrier 20 described in the description of Fig. 9 and Fig. 10 are the same as the body connector 10, the main body connector 110, the body connection hole 111, the body connection insertion portion 120, the body locking portion 121, the body connection insertion hole 122, the body recess portion 130, the body curvature portion 140 and the carrier 20 shown in Fig. 1 to 8. Thus, the description of the same configuration can be omitted.

[0098] Referring to Fig. 9 and Fig. 10, the manufacturing method of the suspension device 1 may include an inserting step in which the body connector 10 is set in a mold M (S910 in Fig. 9). The body connector 10 may be made of a material comprising the first material. The body connector inserting portion 120 of the body connector 10 may be inserted into the mold M. Since the body connector inserting portion 120 is inserted into the mold M, the body connector inserting portion 120 may be formed in a molding step (S920 in Fig. 9) come into contact with a material comprising the second material, as described below.

[0099] The manufacturing method of the suspension device 1 may include the molding step in which the material comprising the second material is arranged in the mold M to form the carrier 20 (S920 in Fig. 9). The material comprising the second material may be injected into the mold M through a mold hole MH of the mold M. The first material of the body connector 10 and the second material of the carrier 20 may be different from each other. The mold M may be provided to correspond to a shape of the carrier 20.

[0100] In the molding step (S920), the body connection insertion portion 120 provided in the body connector 10 can be connected to the beam connector 250 of the beam 20. According to one embodiment, the body connection insertion portion 120 can be inserted into the beam connector 250. When the body connection insertion portion 120 is inserted into the beam connector 250, the coupling strength between the body connection insertion portion 120 and the beam connector 250 can be generated such that the body connector 10 and the beam 20 are integrally formed. Since the body connector 10 and the beam 20 are integrally formed, the coupling member (e.g., bolt, nut, etc.) that couples the body connector 10 and the beam 20 need not be used.Thus, the mass of the suspension device 1 can be reduced and a method for coupling the body connector 10 and the bracket 20 is not required, thereby reducing the manufacturing cost of the suspension device 1.

[0101] The body connection insertion portion 120 may include the body locking portion 121 and the body connection insertion hole 122.

[0102] The body locking portion 121 may be provided in a concave shape recessed toward a central portion of the main body connector 110. In the molding step (S920), the material including the second material may be disposed in the body locking portion 121, and thus the first beam connecting member 251 of the beam 20 may be installed in the body locking portion 121. Since the first beam connecting member 251 is installed in the body locking portion 121, the coupling strength between the body connector 10 and the beam 20 can be increased, and a tolerance between the body connector 10 and the beam 20 can be reduced.

[0103] The body connection insertion hole 122 may 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 molding step (S920), the material including the second material may be disposed in the body connection insertion hole 122, and thus the second beam connection member 252 of the beam 20 may be installed in the body connection insertion hole 122. According to one embodiment, the second beam connection member 252 may penetrate the body connection insertion hole 122. Since the second beam connection member 252 penetrates the body connection insertion hole 122, the coupling strength between the body connector 10 and the beam 20 can be increased, and a tolerance between the body connector 10 and the beam 20 can be reduced.

[0104] The manufacturing method of the suspension device 1 may include a bushing installation step in which the bushing 60 is installed in the suspension device 1 (S930 in Fig. 9). The bushing 60 may include the body connecting bushing 61 and the third link connecting bushing 62.

[0105] The socket installation step (S930) may include installing the body connection socket 61 in the body connection hole 111. According to one embodiment, the socket installation step (S930) may include inserting the body connection socket 61 into the body connection hole 111.

[0106] The socket installation step (S930) may include installing the third link connection socket 62 in the third link connector 223. According to one embodiment, the socket installation step (S930) may include inserting the third link connection socket 62 into the third link connector 223.

[0107] The suspension device 1 manufactured by the suspension device manufacturing method can be made lightweight, thereby improving ride comfort. Furthermore, tolerances occurring in the suspension device 1 can be minimized, and rigidity can be increased. Furthermore, the manufacturing cost of the suspension device 1 can be reduced.

[0108] Fig. 11 is a perspective view illustrating a suspension device according to an embodiment of the present disclosure as viewed from one side. Fig. 12 is a perspective view illustrating the suspension device according to an embodiment of the present disclosure as viewed from the other side.

[0109] Fig. 11 and Fig. 12 illustrate a suspension device 71. 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.

[0110] The body connector 710 may be configured between a body (not shown) of a vehicle and the carrier 720 to connect the body (not shown) and the carrier 720.

[0111] 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 one embodiment, the body connection hole 7111 may be provided on one end of the main body connector 7110. 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. The socket 760 may be installed in the body connection hole 7111. According to one embodiment, a body connection socket 761 may be installed in the body connection hole 7111. The body connection socket 761 may be inserted into the body connection hole 7111. The main body connector 7110 and the body may be connected by the body connection socket 761.Since the body connection socket 761 is installed 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 socket 761 installed 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 socket 761. Consequently, the bracket 720 can move relative to the body.

[0112] The main body connector 7110 can be inserted into the carrier 720 and secured to the carrier 720. Since the main body connector 7110 is inserted into the carrier 720 and secured thereto, the main body connector 7110 and the carrier 720 can be integrally formed and movable. Since the main body connector 7110 is inserted into the carrier 720 and is integrally formed therewith, no coupling element (e.g., bolt, nut, etc.) connecting the body connector 710 and the carrier 720 needs to be used.

[0113] Since the coupling member is not used, the unsprung mass of the suspension device 71 can be reduced by the mass of the coupling member, and the comfort of driving the vehicle can be improved.

[0114] In addition, since the coupling element is not used, a tolerance between the body connector 710 and the carrier 720 can be reduced.

[0115] In addition, since no method for coupling the body connector 710 and the bracket 720 is required, the manufacturing process can be simplified and the unit cost of the suspension device 711 can be reduced.

[0116] The carrier 720 can be connected to the disc 730, the brake caliper 740 and the connecting link 750.

[0117] The disk 730 may be disposed on one side of the carrier 720 (e.g., the +Y-axis direction). The disk 730 may include a disk cover 7310 and a disk rotor 7320. The disk cover 7310 may be disposed between the carrier 720 and the disk rotor 7320. The disk rotor 7320 may rotate relative to the carrier 720, and the disk cover 7310 may be fixed to the carrier 720.

[0118] The brake caliper 740 may be arranged to be connected to the carrier 720. A portion of the brake caliper 740 may be fixed to the carrier 720 and move to contact the disc rotor 7320 of the disc 730. When the brake caliper 740 moves to contact the disc rotor 7320 rotating relative to the carrier 720, friction generated between the brake caliper 740 and the disc rotor 7320 may reduce a rotational speed of the disc rotor 7320 or stop the rotation of the disc rotor 7320.

[0119] The connecting link 750 may be configured to be connected to the support 720. One end of the connecting link 750 may be connected to the support 720, and the other end may be connected to the body. The connecting link 750 may rotate relative to the support 720 and the body. As the connecting link 750 rotates relative to the support 720 and the body, the support 720 may move relative to the body. The connecting link 750 may include a first connecting link 751, a second connecting link 752, and a third connecting link 753.

[0120] The first connecting link 751 may be arranged on a top surface (e.g., the +Z-axis direction) of the support 720. The second connecting link 752 may be arranged on a portion (e.g., the +X-axis direction) of a bottom surface (e.g., the -Z-axis direction) of the support 720. The third connecting link 753 may be arranged on another portion (e.g., the -X-axis direction) of the bottom surface (e.g., the -Z-axis direction) of the support 720.

[0121] The first link 751, the second link 752, and the third link 753 may be connected to the carrier 720 and rotate with respect to the carrier 720. According to one 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 carrier 720 and rotate with respect to the carrier 720, and the other end of the first link 751, the other end of the second link 752, and the other end of the third link 753 may be connected to the body and rotate with respect to the body. Because the first link 751, the second link 752, and the third link 753 rotate with respect to the carrier 720 and the body, the carrier 720 can move relative to the body.

[0122] The third link 753 may include an elastic support portion 7531. The elastic support portion 7531 may be disposed between one end and the other end of the third link 753. An elastic member may be disposed on the elastic support portion 7531, and the elastic member may be configured to connect the third link 753 and a portion of the body. According to one embodiment, the elastic member may be provided as a spring. Since the elastic member connects the third link 753 and the portion of the body, the distance between the portion of the body and the third link 753 may vary.

[0123] Fig. 13 is a plan view illustrating a portion of the suspension device according to an embodiment of the present disclosure. Fig. 14 is a perspective view illustrating the portion of the suspension device according to an embodiment of the present disclosure viewed from one side. Fig. 15 is a perspective view illustrating the portion of the suspension device according to an embodiment of the present disclosure viewed from the other side. Fig. 16 is an enlarged perspective view illustrating the portion of the suspension device according to an embodiment of the present disclosure. Fig. 17 is a perspective view illustrating a body connector of the suspension device according to an embodiment of the present disclosure as viewed from the other side. Fig. 18 is a perspective view illustrating the body connector of the suspension device according to an embodiment of the present disclosure as viewed from the other side.

[0124] The suspension device 71, the body connector 710, the main body connector 7110, the body connection hole 7111, the carrier 720, the bushing 760, the body connection bushing 761 and a third link connection bushing 762, which in Fig. 13 to 18 are the same as the suspension device 71, the body connector 710, the main body connector 7110, the body connection hole 7111, the carrier 720, the bushing 760, the body connection bushing 761 and the third link connection bushing 762 shown in Fig. 11 and Fig. 12. Thus, the description of the same configuration can be omitted.

[0125] Referring to Fig. 13 to 18, a detailed structure of the body connector 710 and the carrier 720 can be seen.

[0126] The body connector 710 may include a main body connector 7110, a body connection insertion portion 7120, a body recess portion 7130, a body bend portion 7140, and a coupling reinforcement portion 7150.

[0127] The main body connector 7110 may include the 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. According to another 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.

[0128] The bushing 760 may be installed in the body connection hole 7111. According to one embodiment, the body connection bushing 761 may be installed 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 provided as an elastic member. Since 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 with respect to the body.

[0129] The body connection inserting portion 7120 may be provided in the main body connector 7110 such that it comes into contact with the carrier 720. The body connection insert 7120 may be defined as a portion of the main body connector 7110 that comes into contact with the carrier 720. According to one embodiment, the body connection inserting portion 7120 may be inserted into the carrier 720 such that the body connector 710 and the carrier 720 can be provided integrally. Since the body connector 710 and the carrier 720 are provided integrally, the coupling member that connects the body connector 710 and the carrier 720 need not be used.

[0130] The body recessed portion 7130 may be provided in the main body connector 7110 and formed to be recessed toward one side (e.g., 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 provided in a central portion of the main body connector 7110. The location where the body recessed portion 7130 is provided is not limited to the central portion of the main body connector 7110; the body recessed portion 7130 may be provided in various locations. 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.

[0131] The body curved portion 7140 may be provided in the main body connector 7110 and may curve toward one side (e.g., the Y-axis direction). The body curved portion 7140 may be provided on an outer portion of the main body connector 7110. Since the body curved portion 7140 is provided in the main body connector 7110, the bending rigidity of the body connector 710 may be increased.

[0132] The coupling reinforcement portion 7150 may be provided in the main body connector 7110. According to one embodiment, the coupling reinforcement portion 7150 may be provided in the body connection insertion portion 7120. Since the coupling reinforcement portion 7150 is provided in the body connection insertion portion 7120, the coupling reinforcement portion 7150 may contact the carrier connector 7250 of the carrier 720.

[0133] The coupling reinforcement portion 7150 may be provided in the form of a hole or protrusion in the body joint insertion portion 7120, which may increase the contact area with the carrier connector 7250. Alternatively, a portion of the carrier connector 7250 may be configured to penetrate the coupling reinforcement portion 7150 or may be arranged to surround the coupling reinforcement portion 7150.

[0134] Thus, the coupling strength between the coupling reinforcement portion 7150 and the beam connector 7250 can be improved, the resistance to a shear force generated by an external force on the coupling reinforcement portion 7150 and the beam connector 7250 can be increased, and the rigidity of the suspension device 71 can be increased.

[0135] The coupling reinforcement portion 7150 may include a first coupling reinforcement portion 7151 and a second coupling reinforcement portion 7152. According to one embodiment, the first coupling reinforcement portion 7151 may be configured to be formed on a surface of the body connection insertion portion 7120, and the second coupling reinforcement portion 7152 may be configured to be formed on an end of the body connection insertion portion 7120. A description of the first coupling reinforcement portion 7151 will be provided later with a description of Fig. 19 to 22. A description of the second coupling amplifying section 7152 will be given later with a description of Fig. 23 to 25.

[0136] The carrier 720 may include a carrier hole 7210, a link connector 7220, a caliper connector 7230, a disc connector 7240, and a carrier connector 7250.

[0137] The support 720 may be provided with a support hole 7210. The support hole 7210 may allow one side (e.g., the +Y-axis direction) and the other side (e.g., the -Y-axis direction) of the support 720 to communicate with each other. The disc 730 may be inserted into the support hole 7210. The disc 730 may be inserted into the support hole 7210 and secured to the support 720.

[0138] The carrier 720 may be provided with the link connector 7220. The link connector 7220 may connect the carrier 720 and the link 750. The link 750 may be provided such that it is connected to the carrier through the link connector 7220 and rotates relative to the carrier 720. The link connector 7220 may include a first link connector 7221, a second link connector 7222, and a third link connector 7223.

[0139] The first link connector 7221 may be provided in the carrier 720. According to one embodiment, the first link connector 7221 may be provided on a top surface (e.g., the +Z-axis direction) of the carrier 720. The first link connector 7221 may be provided with a hole into which the first link 751 can be inserted. The first link connector 7221 may be connected to the first link 751, and the first link 751 may rotate with respect to the carrier 720 by being connected to the first link connector 7221.

[0140] The second link connector 7222 may be provided in the carrier 720. According to one embodiment, the second link connector 7222 may be provided on a side (e.g., the +X-axis direction) of a bottom (e.g., the -Z-axis direction) of the carrier 720. The second link connector 7222 may be provided with a hole into which the second link 752 can be inserted. The second link connector 7222 may be connected to the second link 752, and the second link 752 may rotate with respect to the carrier 720 by being connected to the second link connector 7222.

[0141] The third link connector 7223 may be provided in the carrier 720. According to one embodiment, the third link connector 7223 may be provided on the other side (e.g., the -X-axis direction) of the bottom side (e.g., the -Z-axis direction) of the carrier 720. The third link connector 7223 may be provided with a hole into which the third link 753 can be inserted. The third link connector 7223 may be connected to the third link 753, and the third link 753 may rotate with respect to the carrier 720 by being connected to the third link connector 7223.

[0142] The link connector 7220 may be provided with the socket 760. According to one embodiment, the third link connector 7223 may be provided with the third link connection socket 762. The third link connection socket 762 may be connected to the third link 753. The third link 753 may rotate relative to the carrier 720 by being connected to the third link connection socket 762.

[0143] The brake caliper connector 7230 may be provided in the carrier 720. The brake caliper 740 may be connected to the brake caliper connector 7230. According to one embodiment, the brake caliper 740 may be attached to the brake caliper connector 7230, and the brake caliper 740, while rotating relative to the disc rotor 7320 of the disc 730, may come into contact with and rub against the disc rotor 7320 or be spaced apart from the disc rotor 7320. As the brake caliper 740 rubs against the disc rotor 7320 of the disc 730, the rotation of the disc 730 may slow down or stop.

[0144] The disc connector 7240 may be provided in the carrier 720. The disc connector 7240 may be configured adjacent to the body connection hole 7111. The disc connector 7240 may be provided as a hole penetrating the carrier 720. The disc connector 7240 may be provided as one or more holes. The disc connector 7240 may be connected to the disc 730. According to one embodiment, a portion of the disc 730 may be secured to the carrier 720 by penetrating the disc connector 7240.

[0145] The carrier connector 7250 may be provided in the carrier 720. The carrier connector 7250 may be connected to the body connector 710. According to one embodiment, the body connector 710 may be inserted into the carrier connector 7250.

[0146] The body connector 710 may be made of a material comprising a first material. According to one embodiment, the first material may be provided as a material comprising iron and / or iron alloy and / or carbon fiber and / or plastic, or a combination thereof.

[0147] The carrier 720 may be made of a material that includes a second material different from the first material. According to one embodiment, the second material may be provided as a material that includes aluminum and / or an aluminum alloy and / or carbon fiber or plastic and / or a combination thereof.

[0148] With the provided body connector 710, the bracket 720 integrally connected to the body connector 710 can be manufactured. Hereinafter, a manufacturing method of the suspension device 71 provided with the body connector 710 and the bracket 720 will be described.

[0149] Fig. 19 is a cross-sectional view illustrating a first coupling reinforcing portion of the suspension device according to a first embodiment of the present disclosure. Fig. 20 is a cross-sectional view illustrating a first coupling reinforcing portion of the suspension device according to a second embodiment of the present disclosure. Fig. 21 is a cross-sectional view illustrating a first coupling reinforcing portion of the suspension device according to a third embodiment of the present disclosure. Fig. 22 is a cross-sectional view illustrating a first coupling reinforcing portion of the suspension device according to a fourth embodiment of the present disclosure.

[0150] The body connection inserting portion 7120, a first carrier connection element 7251 and a second carrier connection element 7252, which in Fig. 19 to 22 are the same as the body joint insertion portion 7120, the first support joint member 7251 and the second support joint member 7252 shown in Fig. 11 to 18. Thus, the description of the same configuration is omitted.

[0151] Fig. 19 to 22 illustrate various embodiments of the first coupling enhancing portion 7151.

[0152] Referring to Fig. 19, the first coupling reinforcement portion 7151 may be provided as a coupling reinforcement hole 7151-1. According to one embodiment, the coupling reinforcement hole 7151-1 may be provided as a hole penetrating the body joint insertion portion 7120. The coupling reinforcement hole 7151-1 is provided as a hole penetrating the body joint insertion portion 7120. The carrier connector 7250 may be inserted into the coupling reinforcement hole 7151-1. A plurality of coupling reinforcement holes 7151-1 may be provided. The coupling reinforcement hole 7151-1 may vary in size, and the plurality of coupling reinforcement holes 7151-1 may have different sizes.

[0153] The carrier connector 7250 may include the first carrier connecting element 7251 and the second carrier connecting element 7252.

[0154] The first support connecting member 7251 may be configured to contact a surface of the body connection insertion portion 7120. According to one embodiment, the first support connecting member 7251 may be configured to contact upper and lower surfaces of the body connection insertion portion 7120.

[0155] The second beam connecting member 7252 can be inserted into the coupling reinforcement hole 7151-1 and configured to connect the first beam connecting member 7251. Since the second beam connecting member 7252 is inserted into the coupling reinforcement hole 7151-1, the contact area between the body connection insertion portion 7120 and the beam connector 7250 can be increased, and the coupling strength between the body connection insertion portion 7120 and the beam connector 7250 can be improved. Thus, the resistance to a shear force generated by an external force between the body connection insertion portion 7120 and the beam 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.

[0156] Referring to Fig. 20, the first coupling reinforcement portion 7151 may be provided as a coupling reinforcement ridge 7151-2. According to one embodiment, the coupling reinforcement ridge 7151-2 may be provided as a hole penetrating the body joint insertion portion 7120 and may be provided so as to extend from a surface of the body joint insertion portion 7120 and protrude in one direction. The coupling reinforcement ridge 7151-2 may be provided on a surface of the body joint insertion portion 7120 and protrude in one direction or the other direction. A plurality of the coupling reinforcement ridges 7151-2 may be provided. According to one embodiment, the plurality of coupling reinforcement ridges 7151-2 may protrude from the surface of the body joint insertion portion 7120 in different directions.

[0157] The angle formed between the surface of the body connection insertion portion 7120 and the direction in which the coupling reinforcement ridge 7151-2 protrudes may be greater than 0 degrees to less than 180 degrees, but is not limited thereto. According to one embodiment, the angle formed between the surface of the body connection insertion portion 7120 and the direction in which the coupling reinforcement ridge 7151-2 protrudes may be approximately 90 degrees.

[0158] The plurality of coupling reinforcement ridges 7151-2 may be provided. The size of the coupling reinforcement ridges 7151-2 and the protruding length of the coupling reinforcement ridges 7151-2 may vary.

[0159] The second beam connecting member 7252 can be inserted into the coupling reinforcement hole 7151-1 and configured to connect the first beam connecting hole 7251. Since the second beam connecting member 7252 is inserted into the coupling reinforcement ridge 7151-2, the contact area of ​​the body connection insertion portion 7120 and the beam connector 7250 can be increased, and the coupling strength between the body connection insertion portion 7120 and the beam connector 7250 can be improved. Thus, the resistance to a shear force generated by an external force between the body connection insertion portion 7120 and the beam 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.

[0160] Referring to Fig. 21, the first coupling reinforcement portion 7151 may be provided as a coupling reinforcement forming unit 7151-3. The coupling reinforcement forming unit 7151-3 may be provided to extend from a surface of the body joint insertion portion 7120. According to one embodiment, the coupling reinforcement forming unit 7151-3 may be provided to have an approximately rectangular, trapezoidal, or embossed shape.

[0161] A plurality of coupling reinforcement mold units 7151-3 may be provided. The plurality of coupling reinforcement mold units 7151-3 may protrude in different directions.

[0162] The angle formed between the surface of the body joint insertion portion 7120 and the direction in which the coupling reinforcement molding unit 7151-3 protrudes may be greater than 0 degrees to less than 180 degrees, but is not limited thereto. According to one embodiment, the angle formed between the surface of the body joint insertion portion 7120 and the direction in which the coupling reinforcement molding unit 7151-3 protrudes may be approximately 45 degrees.

[0163] A space formed to be recessed may be provided on the opposite side to the direction in which the coupling reinforcement forming unit 7151-3 protrudes. A third beam connecting member 7252-1 may be arranged in the space recessed with respect to the coupling reinforcement forming unit 7151-3. Since the coupling reinforcement forming unit 7151-3 may be provided to extend from a surface of the body-body connecting inserting portion 7120, the contact area between the body-body connecting inserting portion 7120 and the beam connector 7250 can be increased, and the coupling strength between the body-body connecting inserting portion 7120 and the beam connector 7250 can be improved.

[0164] Referring to Fig. 22, the first coupling reinforcement portion 7150 may be provided as a coupling reinforcement unit-shape hole 7151-4. The coupling reinforcement unit-shape hole 7151-4 may be provided extending from a surface of the body joint insertion portion 7120. According to one embodiment, the coupling reinforcement unit-shape hole 7151-4 may be provided approximately in a rectangular, trapezoidal, or embossed shape.

[0165] The coupling reinforcement molding unit hole 7151-4 may be provided in the form of a combination of the coupling reinforcement molding unit 7151-3 and the coupling reinforcement hole 7151-1.

[0166] A plurality of coupling reinforcement forming unit holes 7151-4 may be provided. The plurality of coupling reinforcement forming unit holes 7151-4 may be provided so as to protrude in different directions.

[0167] A space formed to be recessed may be provided on the opposite side to the direction in which the coupling reinforcement forming unit hole 7151-4 protrudes. A third beam connecting member 7252-1 may be arranged in the space formed to be recessed with respect to the coupling reinforcement forming unit hole 7151-4. The coupling reinforcement forming unit hole 7151-4 is provided to extend from a surface of the body joint insertion portion 7120, and the second beam connecting member 7252 is arranged to penetrate the coupling reinforcement forming unit hole 7151-4. Thus, the contact area of ​​the body connection inserting portion 7120 and the carrier connector 7250 can be increased, and the coupling strength between the body connection inserting portion 7120 and the carrier connector 7250 can be improved.

[0168] Fig. 23 is a perspective view illustrating a body connector of the suspension device according to an embodiment of the present disclosure as viewed from the other side. Fig. 24 is a cross-sectional view illustrating one end of a second coupling reinforcing portion of the suspension device according to the first embodiment of the present disclosure. Fig. 25 is a cross-sectional view illustrating one end of a second coupling reinforcing portion of the suspension device according to the second embodiment of the present disclosure.

[0169] The body connector 710, the main body connector 7110, the body connection insertion portion 7120, the first carrier connection member 7251 and the second carrier connection member 7252, which are shown in Fig. 23 to 25 are the same as the body connector 710, the main body connector 7110, the body connection insertion portion 7120, the first carrier connection member 7251 and the second carrier connection member 7252 shown in Fig. 11 to 22. Thus, the description of the same configuration can be omitted.

[0170] Fig. 23 to 25 illustrate various embodiments of the second coupling enhancing portion 7152.

[0171] Referring to Fig. 23, the second coupling reinforcement portion 7152 may be provided on one end of the body connection insertion portion 7120. According to one 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.

[0172] The second coupling reinforcement portion 7152 may extend from the body joint insertion portion 7120. The angle formed between the direction in which the second coupling reinforcement portion 7152 extends and the surface of the body joint insertion portion 7120 may be approximately above 0 degrees to below 180 degrees. Since the second coupling reinforcement portion 7152 is configured to extend from the body joint insertion portion 7120, the contact area of ​​the body joint connector 710 and the beam 720 can be larger, and the coupling strength between them can be improved. In addition, a shear force generated by an external force can be increased, and the rigidity and durability of the suspension device 71 can be improved.

[0173] Referring to Fig. 24, the second coupling reinforcement portion 7152 may be provided as a coupling reinforcement flange 7152-1. The coupling reinforcement flange 7152-1 may be provided to extend from one end of the body joint insertion portion 7120. The coupling reinforcement flange 7152-1 may be provided to curve from the body joint insertion portion 7120. According to one embodiment, the coupling reinforcement flange 7152-1 and the body joint insertion portion 7120 may form an approximately "L" shape in the alphabet. Since the coupling reinforcement flange 7152-1 and the body joint insertion portion 7120 form approximately an "L" shape in the alphabet, the first beam joint member 7251 can be configured to surround the coupling reinforcement flange 7152-1.Thus, the contact surface area of ​​the body connector 710 and the beam connector 720 can be increased, and the coupling strength between them can be improved. Furthermore, a shear force generated by an external force can be increased, and the rigidity and durability of the suspension device 71 can be improved.

[0174] Referring to Fig. 25, the second coupling reinforcement portion 7152 may be provided as a coupling reinforcement abutment edge 7152-2. The coupling reinforcement abutment edge 7152-2 may be provided to extend from one end of the body joint insertion portion 7120. The coupling reinforcement abutment edge 7152-2 may be provided to curve from the body joint insertion portion 7120. According to one embodiment, the coupling reinforcement abutment edge 7152-2 and the body joint insertion portion 7120 may form approximately a "C" shape in the alphabet. Since the coupling reinforcement abutting edge 7152-2 and the body joint insertion portion 7120 approximately form a "C" shape in the alphabet, the first beam joint member 7251 can be configured to surround the coupling reinforcement abutting edge 7152-2.Thus, the contact area of ​​the body connector 710 and the beam can be increased, and the coupling strength between them can be improved. Furthermore, a shear force generated by an external force can be increased, and the rigidity and durability of the suspension device 71 can be improved.

[0175] Fig. 26 is a flowchart illustrating a manufacturing method of the suspension device according to an embodiment of the present disclosure. Fig. 27 is a perspective view illustrating insertion of the body connector suspension device into a mold according to an embodiment of the present disclosure.

[0176] The body connector 710, the main body connector 7110, the body connection hole 7111, the body connection insertion portion 7120, the body recess portion 7130, the body bend portion 7140, the coupling reinforcement portion 7150, and the beam 720 described in the description of Fig. 26 and Fig. 27 are the same as the body connector 710, the main body connector 7110, the body connection hole 7111, the body connection insertion portion 7120, the body recess portion 7130, the body bend portion 7140, the coupling reinforcement portion 7150 and the carrier 720 shown in Fig. 11 to 25. Thus, the description of the same configuration can be omitted.

[0177] Referring to Fig. 26 and Fig. 27, the manufacturing method of the suspension device 71 may include a step of forming a coupling reinforcement portion in which the coupling reinforcement portion 7150 is formed in the main body connector 7110 (S2610 in Fig. 26). According to one embodiment, the 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 increase the coupling strength between the body connector 710 and the carrier 720. Thus, the resistance to a shear force generated by an external force between the body connector 710 and the carrier 720 may increase. The coupling reinforcement portion 7150 may include the first coupling reinforcement portion 7151 and / or the second coupling reinforcement portion 7152.

[0178] The step of forming a coupling reinforcement portion (S2610) may include forming the first coupling reinforcement portion 7151 on a surface of the body connector insertion portion 7120. The first coupling reinforcement portion 7151 may be formed on the surface of the body connector insertion portion 7120 to increase the contact area of ​​the body connector 710 and the carrier 720. The first coupling reinforcement portion 7151 may be formed in various ways, such as drilling, milling, deburring, extrusion, and the like.

[0179] The first coupling reinforcement portion 7151 may include the coupling reinforcement hole 7151-1, the coupling reinforcement ridge 7151-2, the coupling reinforcement molding unit 7151-3, and / or the coupling reinforcement molding unit hole 7151-4.

[0180] The coupling reinforcement hole 7151-1 may be provided to penetrate the body joint 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.

[0181] The coupling reinforcement ridge 7151-2 may be provided as a hole penetrating the body connection insertion portion 7120 and may be provided to protrude in one direction relative to the body connection insertion portion 7120. A plurality of the coupling reinforcement ridges 7151-2 may be provided. The shape, size, number, and protruding direction of the coupling reinforcement ridges 7151-2 may vary.

[0182] The coupling reinforcement mold unit 7151-3 may protrude from the body joint insertion portion 7120. The direction in which the coupling reinforcement mold unit 7151-3 protrudes may form a predetermined angle with a surface of the body joint insertion portion 7120. Thus, the coupling reinforcement mold unit 7151-3 may be provided so as to be inclined with respect to the body joint insertion portion 7120. A plurality of coupling reinforcement mold units 7151-3 may be provided. The shape, size, and number of the coupling reinforcement mold units 7151-3 may vary.

[0183] The coupling reinforcement forming unit hole 7151-4 may be provided as a hole penetrating the body joint insertion portion 7120 and may be provided to protrude in one direction relative to the body joint insertion portion 7120. A plurality of the coupling reinforcement forming unit holes 7151-4 may be provided. The shape, size, number, and protruding direction of the coupling reinforcement forming unit holes 7151-4 may vary.

[0184] The step of forming a coupling reinforcement portion 7150 (S2610) may include forming the second coupling reinforcement portion 7152 on one end of the body joint insertion portion 7120. The second coupling reinforcement portion 7152 may be formed on one end of the body joint insertion portion 7120 to increase the contact area of ​​the body connector 710 and the carrier 720. The second coupling reinforcement portion 7152 may be formed in various ways, such as extrusion and the like.

[0185] The second coupling reinforcement portion 7152 may include the coupling reinforcement flange 7152-1 and / or the coupling reinforcement abutment edge 7152-2.

[0186] The coupling reinforcement flange 7152-1 may extend from the body joint insertion portion 7120 and curve in one direction. The angle formed between the coupling reinforcement flange 7152-1 and the body joint insertion portion 7120 may be approximately greater than 0 degrees to less than 180 degrees. According to one embodiment, the angle formed between the coupling reinforcement flange 7152-1 and the body joint insertion portion 7120 may be approximately 90 degrees. The coupling reinforcement flange 7152-1 and the body joint insertion portion 7120 may form an approximately "L" shape. The length, protruding height, and location of the coupling reinforcement flange 7152-1 may vary.

[0187] The coupling reinforcement abutment edge 7152-2 may extend from the body joint insertion portion 7120 and curve in one direction. The angle formed between the coupling reinforcement abutment edge 7152-2 and the body joint insertion portion 7120 may be approximately greater than 0 degrees to less than 180 degrees. According to one embodiment, the angle between the coupling reinforcement abutment edge 7152-2 and the body joint insertion portion 7120 may be approximately 90 degrees. The coupling reinforcement abutment edge 7152-2 may be curved at two points. Thus, the coupling reinforcement abutment edge 7152-2 and the body joint insertion portion 7120 may form an approximately "C" shape. The length, protruding height and location of the coupling reinforcement butt edge 7152-2 may vary.

[0188] The manufacturing method of the suspension device 71 may include an inserting step in which the body connector 710 is inserted into a mold 7M (S2620 in Fig. 26). The body connector 710 may be made of a material comprising a first material. The body connection insertion portion 7120 of the body connector 710 may be inserted into the mold 7M. Since the body connection insertion portion 7120 is inserted into the mold 7M, the body connection insertion portion 7120 may be formed in a molding step (S2630 in Fig. 26), which is described below, come into contact with the material comprising the second material.

[0189] The manufacturing method of the suspension device 71 may include the molding step in which the material comprising the second material is arranged in the mold 7M to form the carrier 720 (S2630 in Fig. 26). The material comprising the second material may be injected into the mold 7M through a mold hole 7MH of the mold 7M. The first material of the body connector 710 and the second material of the carrier 720 may be different from each other. The mold 7M may be provided to correspond to a shape of the carrier 720.

[0190] In the molding step (S2630), the body connection insertion portion 7120 provided in the body connector 710 may be connected to the beam connector 7250 of the beam 720. According to one embodiment, the body connection insertion portion 7120 may be inserted into the beam connector 7250. When the body connection insertion portion 7120 is inserted into the beam connector 7250, the coupling strength can be generated between the body connection insertion portion 7120 and the beam connector 7250, resulting in the body connector 710 and the beam 720 being integrally formed. Since the body connector 710 and the beam can be integrally formed, the coupling member (e.g., bolt, nut, etc.) that couples the body connector 710 and the beam 720 need not be used.Thus, the mass of the suspension device 71 can be reduced and the process of coupling the body connector 710 and the support 720 is not required, resulting in lower manufacturing costs of the suspension device 71.

[0191] The manufacturing method of the suspension device 71 may include a bushing installation step in which the bushing 760 is installed in the suspension device 71 (S2640 in Fig. 26). The bushing 760 may include the body connecting bushing 761 and the third link connecting bushing 762.

[0192] The socket installation step (S2640) may include installing the body connection socket 761 in the body connection hole 7111. According to one embodiment, the socket installation step (S2640) may include inserting the body connection socket 761 into the body connection hole 7111.

[0193] The socket installation step (S2640) may include installing the third link connection socket 762 in the third link connector 7223. According to one embodiment, the socket installation step (S2640) may include inserting the third link connection socket 762 into the third link connector 7223.

[0194] The suspension device 71 manufactured by the suspension device manufacturing method can be made lightweight, thereby improving ride comfort. Furthermore, tolerances occurring in the suspension device 71 can be minimized, and rigidity can be increased. Furthermore, the manufacturing cost of the suspension device 71 can be reduced.

[0195] Although the present disclosure has been described with reference to the embodiments illustrated in the drawings, the embodiments are for illustrative purposes only, and those skilled in the art will appreciate that various modifications and other equivalent embodiments are possible from the embodiments. Furthermore, the disclosure may be applied to other fields. Thus, the true technical scope of the present disclosure should be defined by the following claims. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] KR 10-2015-0066110

[0005]

Claims

[1] Suspension device comprising: a body connector having a main body connector provided with a body connection hole; and a carrier, the carrier comprising: a carrier hole extending from the body connector and into which a wheel bearing is inserted; a brake caliper connector connected to a brake caliper; and a link connector connected to a link and configured to rotate with respect to the body connection hole. [2] The suspension device according to claim 1, wherein the link connector comprises: a first link connector provided on a top surface of the carrier; a second link connector provided on one side of a bottom surface of the carrier; and a third link connector provided on the other side of the bottom of the carrier. [3] Suspension device according to claim 2, wherein the connecting member comprises: a first link connected to the first link connector to rotate; a second link connected to the second link connector for rotation; and a third link connected to the third link connector for rotation. [4] Suspension device according to one of claims 1 to 3, wherein: the body connection hole is provided on one side of the main body connector, and the body joint insertion portion provided on the other side of the main body joint is inserted into and fixed to the beam joint of the beam. [5] Suspension device according to claim 4, wherein: the body connection insertion portion has a body locking portion which is recessed, and the carrier has a first carrier connecting element which is inserted into the body locking portion. [6] The suspension device according to claim 4 or 5, which has a body connection insertion hole through which one side and the other side of the body connection insertion portion are connected to each other, wherein the beam connector has a second beam connection member penetrating the body connection insertion hole. [7] Suspension device according to one of claims 1 to 6, wherein: the body connector comprises a first material, and the carrier has a second material different from the first material. [8] Suspension device comprising: a body connector comprising a main body connector provided with a body connection insertion portion and a coupling reinforcement portion disposed on the body connection insertion portion; and a carrier, the carrier comprising: a carrier connector into which the body connection insertion portion is inserted and which comes into contact with the coupling reinforcement portion; a carrier hole into which a wheel bearing is inserted; a brake caliper connector connected to a brake caliper; and a link connector connected to a link. [9] The suspension device according to claim 8, wherein the coupling reinforcing portion includes a first coupling reinforcing portion formed on a surface of the body joint inserting portion to increase the coupling strength between the body joint inserting portion and the beam connector. [10] Suspension device according to claim 9, wherein: the first coupling reinforcement portion has a coupling reinforcement hole penetrating the body connection insertion portion, and the carrier connector comprises a first carrier connecting element that comes into contact with the coupling reinforcement hole and a second carrier connecting element that is configured to penetrate the coupling reinforcement hole. [11] Suspension device according to claim 9 or 10, wherein: the first coupling reinforcement portion has a coupling reinforcement ridge penetrating the body connection insertion portion and projecting in one direction with respect to the body connection insertion portion, and the carrier connector comprises a first carrier connecting element that comes into contact with the coupling reinforcing ridge and a second carrier connecting element that is configured to penetrate the coupling reinforcing ridge. [12] Suspension device according to one of claims 9 to 11, wherein: the first coupling reinforcement portion has a coupling reinforcement molding unit configured to protrude in one direction and be inclined with respect to the body connection insertion portion, and the carrier connector comprises a first carrier connecting element that comes into contact with the coupling reinforcement mold unit and a third carrier connecting element that sits on the coupling reinforcement mold unit. [13] Suspension device according to one of claims 9 to 12, wherein: the first coupling reinforcement portion has a coupling reinforcement forming unit hole configured to protrude in one direction and be inclined with respect to the body connection insertion portion and provided with a hole, and the carrier connector comprises a first carrier connecting member that comes into contact with the coupling reinforcement molding unit hole and a second carrier connecting member that penetrates the coupling reinforcement molding unit hole. [14] The suspension device according to any one of claims 8 to 13, comprising a second coupling reinforcing portion formed on one end of the body joint inserting portion for increasing the coupling strength between the body joint inserting portion and the beam connector. [15] Suspension device according to claim 14, wherein: the second coupling reinforcing portion has a coupling reinforcing flange extending from one end of the body connection insertion portion and curved in one direction, and the carrier connector comprises a first carrier connection element configured to surround the coupling reinforcement flange.

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