WO2017116182A2

WO2017116182A2 - Hybrid suspension arm for vechicle and manufacturing method thereof

Info

Publication number: WO2017116182A2
Application number: PCT/KR2016/015512
Authority: WO
Inventors: 이성근; 김현우; 권태성; 유병석; 정세웅; 권혁; 권익진; 윤영인; 박민국; 권순찬; 이대주
Original assignee: 주식회사 일진
Priority date: 2015-12-30
Filing date: 2016-12-29
Publication date: 2017-07-06
Also published as: WO2017116182A3

Abstract

Provided is a hybrid suspension arm for a vehicle, the light-weight and high-rigidity suspension arm comprising a steel suspension arm body and an insert molding that is insertedly connected to the suspension arm body.

Description

Vehicle hybrid suspension rock and its manufacturing method

The present disclosure relates to a suspension arm of a suspension device of a vehicle, and more particularly, to a hybrid suspension arm for a vehicle manufactured from a composite material of plastic and steel, such as an upper control arm and a lower control arm. will be.

The suspension of the vehicle is a device that connects the vehicle body and the wheels. The suspension of the vehicle includes a spring for absorbing vibrations or shocks transmitted from the road surface to the vehicle body, a shock absorber for adjusting the operation of the spring, and a suspension arm or suspension link for controlling the operation of the wheel.

On the other hand, there are swing arm type, wishbone type, and McPherson strut type as a method of controlling the operation of the wheel, and the suspension device using the wishbone type control method includes a suspension arm (lower control) that connects the knuckle engaged with the wheel to the vehicle body. Cancer). That is, the suspension arm is connected to one end of the cross member or subframe constituting the vehicle body, the other end is connected to the knuckle through the ball joint. The suspension arm supports the wheel to the vehicle body through such a configuration, and appropriately controls the toe-in of the wheel according to the driving condition of the vehicle, thereby serving to improve the straight running and steering stability of the vehicle.

Suspension rocks have been manufactured in a casting type and a press type method. Specifically, according to the casting type method, a suspension rock is manufactured by injecting a molten steel or aluminum into a mold to solidify and shape the same. In addition, according to the press type method, the steel plate of the steel material is produced by pressing the upper plate and the lower plate by welding the two plates to produce the suspension arm.

In the suspension rock production method, a steel is manufactured by casting or a steel plate is manufactured by using a press method, respectively, and then joined by welding. In this case, due to the characteristics of the steel material is heavy, takes a lot of manufacturing process, there is a problem that the deformation and stiffness weakness due to the welding coupling of the steel sheet.

According to various embodiments of the present disclosure, in order to solve the problem of the suspension arm of the steel material and to reduce the weight, to propose a hybrid vehicle suspension vehicle of composite material.

In addition, the rigidity of the hybrid suspension arm for the vehicle is increased, the strength decrease by the injection weld line of the plastic molding is prevented, and the risk of corrosion is reduced.

According to an embodiment, a vehicle hybrid suspension arm includes: a suspension arm body made of steel; Insert molding of plastic material inserted into and coupled to the suspension arm body; And a coupling portion in which a portion of the suspension arm body and the insert molding intersect with each other in order to prevent separation of the suspension arm body and the insert molding.

The coupling portion includes a flange structure, and the flange means includes: a coupling flange formed to be bent inward in the width direction of the suspension arm body; And a fixture that is part of the insert molding and is inserted by the engagement flange.

The engagement portion includes a reinforcement structure, which may include a reinforcement inserted and fixed in the suspension arm body and in contact with the insert molding.

The reinforcement is arranged in the cross-sectional direction of the suspension arm body, and insert molding may wrap the reinforcement.

At least one hole is formed in the reinforcement and the insert molding can pass through the hole.

The reinforcement may be disposed in a direction parallel to the suspension arm body, and a portion of the insert molding may be inserted into and coupled to the reinforcement.

The end of the reinforcement may be formed to be bent in the width direction of the reinforcement.

The engaging portion includes a button structure, the button structure comprising: one or more holes formed in the suspension arm body; It may include one or more buttons formed from insert molding and inserted into and filled in one or more holes that extend to peripheral edges of the one or more holes.

Vehicle hybrid suspension arm according to another embodiment, the suspension arm body made of steel; An insert molding that is inserted into and coupled to the suspension arm body; The suspension arm is formed such that the engagement flange is bent inward in the width direction thereof; The engagement flange can be inserted into the insert molding and joined.

The suspension arm body has two leg portions; And a joint part integrally connecting the two leg parts.

Bush pipes are welded to each leading end of the two leg portions; The ball joint pipe can also be joined by welding to the tip of the joint.

The ball joint pipe is located in the central region between the bush pipes; The bush pipes are arranged to be open in the horizontal direction; The ball joint pipe may be arranged to open in the vertical direction.

Bushes are each press-fitted into the bush pipes; The ball joint pipe may be press-fitted into the ball joint pipe.

One or more holes are formed through the suspension arm body; The insert molding may be formed with one or more buttons which are inserted and filled in one or more holes and extend to the peripheral edges of the one or more holes.

The suspension arm body includes a joint portion for integrally connecting two leg portions and two leg portions; Insert molding also includes a joint portion connecting the two leg portions and the two leg portions integrally; The one or more holes include one or more small diameter holes disposed at predetermined intervals along the length direction in each of the two leg portions; One or more buttons may be inserted and filled in one or more small diameter holes, and may be formed to have a size extended radially to a peripheral edge of the one or more small diameter holes.

The one or more small diameter holes include two or more small diameter holes disposed adjacent to each other; One or more medium diameter holes having a relatively large diameter are formed between the two or more small diameter holes; A part of the insert molding is inserted into the chong-hole, so that a chong-joining rim extending radially to the peripheral edge of the chong-hole may be formed in the insert molding.

The at least one coupling hole includes a large diameter hole formed at the joint portion of the suspension arm body; A part of the insert molding is inserted into the large diameter hole so that a large diameter coupling edge extending radially to the peripheral edge of the large diameter hole may be formed in the insert molding.

The insert molding may be formed by integrally protruding one or more plaid reinforcing ribs.

The suspension arm body may comprise two leg portions.

A pipe-shaped bush engaging protrusion is integrally formed on one leg portion; The insert molding may be inserted into and coupled to the bush engagement protrusion.

Insert moldings are injection molded into the other leg; A ball joint may be inserted into the coupling tip of the insert molding to be integrally injection coupled.

A large diameter hole is formed in the suspension arm body, and the bush may be press-fitted to the large diameter hole.

The large diameter hole may be formed on one side of the suspension arm body between the bush coupling protrusion and the ball joint.

One or more cervical holes are formed in the suspension rock body; One or more buttons may be formed in the insert molding in such a way that it fills the caliber hole and extends radially to the peripheral edge of the caliber hole.

One or more small diameter holes are formed in the suspension arm body, and one or more small diameter coupling edges may be formed in the insert molding so as to extend radially to the peripheral edge of the small diameter holes.

Insert molding is joined to one leg by injection; A ball joint may be inserted into the coupling tip of the insert molding to be integrally injection coupled.

A large diameter bushing coupling hole is formed at the distal end of the other leg portion, and the bush may be press-fitted into the large diameter bushing coupling hole.

The bush pipe may be integrally coupled to the corner where the two leg portions meet.

The bush pipe may be disposed between the ball joint and the large diameter bushing hole.

A cervical hole is formed in one leg part; The caliber hole flange bent toward the inside of the insert molding may be provided in the suspension arm body.

At least one small-diameter hole is formed through the two leg portions; The insert molding may be formed with one or more buttons in the form of filling one or more small diameter holes and extending radially to the peripheral edge of the small diameter holes.

One or more buttons may be formed in a circle or polygon.

According to still another embodiment of the present invention, a method of manufacturing a hybrid suspension arm for a vehicle includes: manufacturing a ball stud using steel materials; Ball bearings are made of plastic; Engaging the ball bearing to the ball stud; Producing a suspension rock body using a steel sheet; Attaching bush pipes and ball joint pipes to the suspension arm body; Press-assemble the assembly of the ball stud and the ball bearing into the ball joint pipe; Inserting the suspension arm body into the mold to inject the plastic resin so that the insert moldings are coupled to the suspension arm body; Press the bush into the bush pipe to assemble; A dust cover can be fitted to the ball studs to secure it with a ring clip.

Lubricate the ball bearings.

Hybrid suspension according to one embodiment, the suspension arm body, the insert molding is inserted into the suspension arm body; It may include a reinforcement located in the suspension body and in contact with the insert molding.

The reinforcement may be disposed along the longitudinal direction of the suspension arm body.

The reinforcement may have a plate shape.

The reinforcement may comprise at least two plates connected to each other.

The reinforcement may have a shape in which at least a portion is bent.

At least a portion of the stiffener may be embedded by insert molding.

At least one hole may be formed in the reinforcing material.

Suspension body, the upper surface; A side extending from the top surface, one side of the reinforcement may be in contact with the top surface of the suspension arm body, the other side of the reinforcement may be in contact with the side of the suspension arm body.

On the upper surface of the suspension arm body, a central hole may be formed in the central portion when the total length of the suspension arm body is divided into three.

At least one recess may be formed on an upper surface of the suspension arm body.

At least one through hole may be formed in the recess.

The suspension arm body may include two leg portions formed integrally with each other, a ball joint may be coupled to the front end of one leg of the two legs, and a bush hole may be formed at the front end of the other leg of the two legs.

The reinforcement may be arranged to extend from a portion of one leg portion of the two leg portions to a portion of the other leg portion.

Bush pipes may be integrally coupled to opposite ends of the leg portions to which the ball joints are coupled.

A plurality of holes are formed on the upper surface of the suspension arm body, and the number of holes formed in the leg portion to which the ball joint is coupled may be equal to or smaller than the number of holes formed in the other leg portion.

Some of the plurality of holes may be disposed in a portion adjacent to the bush hole or the ball joint.

Insert molding may include reinforcing ribs formed in at least a portion of at least one leg portion of the two leg portions.

The reinforcing ribs may be disposed on one leg portion of the two leg portions.

According to one embodiment of the present disclosure, while the suspension arm body made of steel forms an outer side, an insert molding is disposed on the inner side, so that the cross-sectional coefficient of the steel suspension arm body may be sufficiently secured, thereby increasing rigidity.

In addition, it is possible to reduce the weld lines of the injection molding by removing unnecessary portions that do not affect the rigidity in the insert molding to suppress cracking of the insert molding to the maximum, thereby increasing the rigidity and improving the durability.

In addition, it is possible to improve the riding comfort and steering stability of the vehicle by reducing the weight and increasing rigidity in the hybrid type suspension arm.

1 is a perspective view of a vehicle hybrid suspension arm manufactured by a manufacturing method according to an embodiment of the present disclosure.

2 is an exploded perspective view of a vehicle hybrid suspension arm manufactured by a manufacturing method according to an embodiment of the present disclosure.

3 is a rear view of a vehicle hybrid suspension arm manufactured by a manufacturing method according to an embodiment of the present disclosure.

4 is a cross-sectional view taken along the line A-A of FIG.

5 is a cross-sectional view of a ball joint of a hybrid suspension arm for a vehicle according to an embodiment of the present disclosure.

6 is an assembly diagram showing a manufacturing procedure of a method for manufacturing a hybrid suspension arm for a vehicle according to an embodiment of the present disclosure.

7 is a flowchart of a method of manufacturing a hybrid suspension arm for a vehicle according to an embodiment of the present disclosure.

8 is a perspective view of a vehicle hybrid suspension arm in accordance with another embodiment of the present disclosure.

9 is an exploded perspective view of the hybrid suspension arm shown in FIG. 8.

10 is a cross-sectional view taken along the line B-B in FIG. 8.

11 is a perspective view of a hybrid suspension arm for a vehicle according to another embodiment of the present disclosure.

12 is an exploded perspective view of the vehicle hybrid suspension arm shown in FIG. 11.

FIG. 13 is a cross-sectional view taken along the line C-C in FIG.

14 is a bottom view of a suspension arm body with reinforcement according to the present disclosure.

15 is a bottom view of a hybrid suspension arm for a vehicle provided with a reinforcing material according to the present disclosure.

FIG. 16 is a cross-sectional view taken along the line AA ′ of FIG. 15.

17 is a cross-sectional view taken along the line BB ′ of FIG. 15.

18 is a cross-sectional view of a hybrid suspension arm for a vehicle in which another reinforcing material is installed according to the present disclosure.

19 is a cross-sectional view of a hybrid suspension arm for a vehicle in which another reinforcing material is installed according to the present disclosure.

20 is a perspective view illustrating a structure in which a groove is applied to the ball bearing of FIG. 5.

FIG. 21 is a perspective view illustrating a structure in which a slot is applied to the ball bearing of FIG. 5.

22 is an experimental result for determining an optimal number of buttons applied to a hybrid suspension arm for a vehicle according to various embodiments of the present disclosure.

Embodiments of the present disclosure are illustrated for the purpose of describing the technical spirit of the present disclosure. The scope of the present disclosure is not limited to the embodiments set forth below or the detailed description of these embodiments.

All technical and scientific terms used in the present disclosure, unless defined otherwise, have the meanings that are commonly understood by one of ordinary skill in the art to which this disclosure belongs. All terms used in the present disclosure are selected for the purpose of more clearly describing the present disclosure, and are not selected to limit the scope of the rights according to the present disclosure.

As used in this disclosure, expressions such as "comprising", "including", "having", and the like, are open terms that imply the possibility of including other embodiments unless otherwise stated in the phrase or sentence in which the expression is included. It should be understood as (open-ended terms).

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

In the present disclosure, when a component is referred to as being "connected" or "connected" to another component, the component may be directly connected to or connected to the other component, or new It is to be understood that the connection may be made or may be connected via other components.

Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. In the accompanying drawings, the same or corresponding components are given the same reference numerals. In addition, in the following description of the embodiments, it may be omitted to duplicate the same or corresponding components. However, even if the description of the component is omitted, it is not intended that such component is not included in any embodiment.

1 is a perspective view of a vehicle hybrid suspension arm 1 manufactured by a manufacturing method according to an embodiment of the present disclosure, and FIG. 2 is an exploded perspective view of the suspension arm 1 of FIG. 1.

The vehicle hybrid suspension arm 1 may include a suspension arm body 10 capable of producing a high tension steel plate for a vehicle by a general press method.

The suspension arm body 10 may have, for example, a shape such as 'U'. The U-shaped suspension arm body 10 may be used as, for example, an upper control arm of the suspension device, but is not necessarily limited thereto.

The suspension arm body 10 may include two leg portions 12 and a joint portion 14 which integrally connects the two leg portions 12. The bush pipe 16 may be welded to each tip of the two leg portions 12, and the ball joint pipe 18 may be welded to the tip of the joint 14.

Specifically, a semi-cylindrical coupling hole is formed at the distal end of the joint portion 14, and each of the

pipes

16 and 18 is disposed to fit into the coupling hole, and each of the

pipes

16 and 18 and the coupling hole is Can be joined by welding.

The ball joint pipe 18 can be located in the central region between the bush pipes 16 and the bush pipes 16 are arranged to be open in the horizontal direction while the ball joint pipe 18 is in the vertical direction. It may be arranged to be open.

The bush 30 may be press-fitted to the two bush pipes 16, respectively, and each bush 30 may be fastened to the vehicle body by bolts or the like, for example.

The ball joint pipe 18 may be press-fitted and coupled to the ball joint pipe 18. The specific structure of the ball joint 40 is shown in FIGS. 1 and 5,

The ball joint 40 has a ball stud 41, a ball bearing 42 for rotatably supporting it, a dust cover 43 for enclosing the ball stud 41 to prevent ingress of foreign matter, and a dust cover. A ring clip 44 for assembling the 43 to the ball stud 41 and a protector 45 covered with the ball stud 41 from the opposite side of the ball bearing 42.

A large diameter hole 142 having a relatively large diameter may be penetrated through the joint part 14, and each leg part 12 may have a medium diameter hole 122 and a small diameter hole having a relatively small size along its length direction. 124 may be arranged in plurality at predetermined intervals. The size of the diameter increases in order toward the small diameter hole 124, the middle diameter hole 122, and the large diameter hole 142. The middle diameter hole 122 may be disposed between the plurality of small diameter holes 124. The number of the middle diameter hole 122 and the small diameter hole 124 can be appropriately adjusted as necessary.

The insert molding 20 may be coupled to the suspension arm body 10.

The insert molding 20 may generally have a shape similar to the suspension arm body 10. That is, the insert molding 20 may include two leg portions 22 and a joint portion 24 connecting them, and the large diameter hole 242 may be formed through the joint portion 24.

The large diameter coupling edge 244 is formed at the edge of the large diameter hole 142 of the joint portion 14 in the thickness direction and the radial direction, and the large diameter coupling edge 244 is a suspension arm upon injection of the insert molding 20. The suspension arm body is formed to be disposed along the peripheral edge of the large diameter hole 142 of the body 10 so that the insert molding 20 inserted into the suspension arm body 10 does not fall out of the suspension arm body 10. 10) to increase the coupling force between the insert molding (20).

Each leg 22 of the insert molding 20 may be formed with a plurality of buttons 224 at predetermined intervals along the length direction.

Each button 224 is inserted into the small diameter hole 124 formed in each leg portion 12 of the suspension arm body 10 when the insert molding 20 is ejected to fill the small diameter hole 124, and the small diameter hole 124. It can be formed in a size extending radially to the peripheral edge of the. Each button 224 may increase the coupling force between the suspension arm body 10 and the insert molding 20.

In addition, the middle diameter coupling frame 222 formed between the two buttons 224 extends to the peripheral edge of the middle diameter hole 122 formed in each leg portion 12 of the suspension arm body 10 when the insert molding 20 is ejected. It is formed to extend in the radial direction, it is possible to increase the coupling force between the suspension arm body 10 and the insert molding 20.

3 is a rear view of the vehicle hybrid suspension arm 1 manufactured by the manufacturing method according to an embodiment, and FIG. 4 is a cross-sectional view taken along the line A-A of FIG.

The insert molding 20 may be formed by integrally projecting one or more reinforcing ribs 26 which are generally plaid. The shape of this reinforcing rib 26 may be manufactured using a computer optimized design program to minimize the weight of the insert molding 20.

Referring to FIG. 4, the suspension arm body 10 may include two coupling flanges 17 bent inward in the width direction thereof. The engagement flange 17 may have a shape that is bent inward from the side distal end of each leg portion 12.

The two joining flanges 17 are formed to face each other and are fixed inside the insert molding 20, that is, part of the insert molding 20 and inserted by the joining flange 17 at the time of injection of the insert molding 20. Inserted into 20a.

According to this structure, since the upper surface, the lower surface, and the side surface of the coupling flange 17 are supported by the fixing portion 20a, there is no room for a gap between the insert molding 20 and the coupling flange 17, and the insert Even if a crack occurs in the molding 20 itself, there is little room for departure from the suspension arm body 10. Thus, the coupling force between the suspension arm body 10 and the insert molding 20 is increased.

5 is a cross-sectional view of the ball joint 40 of the vehicle hybrid suspension arm 1 according to one embodiment.

Referring to FIG. 5, as the insert molding 20 is injected while the ball joint 40 is pressed into the ball joint pipe 18 of the suspension arm body 10, the ball joint 40 may be inserted into the insert molding 20. It can be integrally coupled to the ball joint pipe 18 by).

The insert molding 20 penetrates between the ball bearing 42 and the ball joint pipe 18, enveloping the ball bearing 42, and after hardening, firmly attaches the ball bearing 42 to the ball joint pipe 18. Can be fixed. The ball bearing 42 surrounds the spherical portion of the ball stud 41, and the dust cover 43 wraps the stick portion of the ball stud 41 so that dust does not enter the ball bearing 42.

6 is an assembly diagram showing a manufacturing procedure of the method of manufacturing a hybrid suspension arm 1 for a vehicle 1 according to an embodiment, and FIG. 7 is a method of manufacturing the hybrid suspension arm 1 for a vehicle 1 according to an embodiment. ) Is a flowchart.

6 and 7, in the method for manufacturing a hybrid suspension arm for a vehicle according to an embodiment, first, a ball stud 41 is manufactured using steel (S110), and a ball bearing 42 is manufactured using plastic. Next, the ball bearing 42 is coupled to the ball stud 41 (S130), and assembled. At this time, lubricating oil may be injected between the ball bearing 42 and the ball stud 41 in order to improve the performance of the ball bearing 42.

Subsequently, the suspension arm body 10 is manufactured using the steel plate (S140), the

pipes

16 and 18 are attached to the suspension arm body 10 by welding (S150), and the ball stud 41 and the ball bearing 42 ) Is assembled by pressing the ball joint pipe 18 into the ball joint pipe 18.

Subsequently, the suspension arm body 10 is inserted into the mold to inject the plastic resin so that the suspension arm body 10 and the insert molding 20 are coupled to each other (S170).

Then, the bush 30 is pressed into the bush pipe 16, assembled (S180), and the dust cover 43 is covered with the ball stud 41 to be fixed by the ring clip 44 (S190). This may end.

8 is a perspective view of a vehicle hybrid suspension arm 300 according to another embodiment, FIG. 9 is an exploded perspective view of the vehicle hybrid suspension arm 300 of FIG. 8, and FIG. 10 is a view illustrating the suspension arm of FIG. BB line cross section.

8 to 10, the vehicle hybrid suspension arm 300 according to another embodiment may be applied to a lower control arm. The lower control arm may have a shape, for example, a 'λ' character.

The vehicle hybrid suspension arm 300 may include a suspension arm body 310, and the suspension arm body 310 may be manufactured by a press method using a high tension steel plate for a vehicle. The insert molding 320 may be integrally coupled to the inner side of the suspension arm body 310 by injection.

The suspension arm body 310 may include two

leg portions

312 and 314 integrally connected to each other. One leg portion 312 may be integrally formed with a pipe-shaped bush coupling protrusion 316, the insert molding 320 may be inserted into the bush coupling protrusion 316 is coupled. A bush (not shown) may be coupled to the bush coupling protrusion 316 to be mounted on the vehicle body.

The bush coupling protrusion 316 may have a tube shape with an empty inside. The insert molding 320 may include a filling rod 316a for insertion into the empty space of the bush coupling protrusion 316. Upon injection of the insert molding 320, the filling rod 316a may be formed while filling the empty space of the bush coupling protrusion 316.

The empty space of the bush coupling protrusion 316 may be completely filled with the filling rod 316a. Thus, the bush engagement protrusion 316 can be reduced in weight and improved in bending and torsional strength as compared with the case of being made of steel only.

The insert molding 320 may also be coupled to the other leg portion 314 by injection. The ball joint 40 may be inserted into and coupled to the distal end portion of the insert molding 320 of the other leg part 314 to be integrally injection-bonded.

A large diameter hole 318 is formed in the central portion of the 'λ' shape of the suspension arm body 310, and the large diameter hole 318 may be disposed between the bush coupling protrusion 316 and the ball joint 40. It may be formed on one side of the arm body 310. A bush (not shown) may be press-fitted into the large diameter hole 318.

In order to increase the bondability of the suspension arm body 310 and the insert molding 320, one or more hollow holes 315 may be formed in the suspension arm body 310. In addition, one or more buttons 322 may be formed in the insert molding 320 to fill the chong hole 315 and extend radially to a peripheral edge of the chong hole 315.

The suspension arm body 310 may be formed with one or more small diameter holes 317, and the insert molding 320 may have one or more small diameter coupling edges 324 extending radially to the peripheral edge of the small diameter holes 317. have.

The suspension arm body 310 may be formed with a recess 330 recessed to dent over the upper surfaces of the two

leg portions

312 and 314. The recesses 330 may be formed in separate forms on the upper surfaces of the two

legs

312 and 314, or may be formed in only one leg. The recess 330 may increase the rigidity of the suspension arm body 310 itself. In addition, at least one small diameter hole 317 may be formed in the recess 330.

The insert molding 320 is introduced between the portion bent by the recess 330 and the sides of the two

legs

312 and 314, and in the cooling process, the insert molding 320 contracts, and the insert molding 320 This bending force can be exerted. Accordingly, the coupling force between the insert molding 320 and the suspension arm body 310 may be increased.

The structure associated with the recess 330 may also be applied to the hybrid suspension arm 1 described above and the hybrid suspension arm 400 to be described later.

Referring to FIG. 10, the suspension arm body 310 may have two coupling flanges 319 that are bent inward in the width direction thereof. The two coupling flanges 319 may be formed to face each other so that the two coupling flanges 319 may be inserted into the insert molding 320 when the insert molding 320 is ejected. Therefore, the coupling force between the suspension arm body 310 and the insert molding 320 is increased.

11 is a perspective view of a vehicle hybrid suspension arm 400 according to another embodiment, FIG. 12 is an exploded perspective view of the vehicle hybrid suspension arm 400 shown in FIG. 11, and FIG. 13 is a cross-sectional view taken along line CC of FIG. 11. .

Referring to FIG. 11, the vehicle hybrid suspension arm 400 according to another embodiment may be applied to a lower control arm.

The vehicle hybrid suspension arm 400 may include a suspension arm body 410 and an insert molding 420. The suspension arm body 410 may be manufactured using a high tension steel plate for a vehicle using a press method. The insert molding 420 may be formed by injection into the suspension arm body 410 and may be integrally combined with the suspension arm body 410.

The suspension arm body 410 may include two

leg portions

412 and 414. The insert molding 420 may be coupled to the one leg portion 412 by injection, and the ball joint 40 may be inserted into and coupled to the distal end of the insert molding 420. A large bush coupling hole 418 is formed at the distal end of the other leg portion 414, and a bush (not shown) may be press-fitted into the large diameter bush coupling hole 418.

The bush pipe 430 may be integrally coupled to the corner where the two

leg parts

412 and 414 meet. Substantially, the bush pipe 430 may be disposed between the ball joint 40 and the large diameter bushing coupling hole 418.

In order to increase the coupling between the suspension arm body 410 and the insert molding 420, the upper surface of the suspension arm body 410, the middle hole is located adjacent to the center portion when the total length of the suspension arm body is divided into three 416 may be formed. An upper diameter hole 417 bent toward the inside of the insert molding 420 may be formed on the upper surface of the suspension arm body 410.

The insert molding 420 may include a flange cover part 427 for surrounding the medium diameter hole flange 417. The flange cover portion 427 may extend from the end of the middle hole flange 417 to the upper portion of the suspension arm body 410 when the insert molding 420 is ejected. Therefore, as the flange cover portion 427 surrounds the middle hole flange 417, the bondability between the insert molding 420 and the suspension arm body 410 may be increased.

In addition, one or more small diameter holes 415 may be formed through the two

leg portions

412 and 414 to increase the bondability between the suspension arm body 410 and the insert molding 420. The insert molding 420 may be formed with one or more buttons 422 filling the one or more small diameter holes 415 and extending radially to the peripheral edge of the small diameter holes 415.

As shown in FIG. 13, the suspension arm body 410 is formed with two coupling flanges 419 bent inward in the width direction thereof, and the two coupling flanges 419 may be formed to face each other. The two joining flanges 419 are inserted in the form of the two joining flanges 419 to be inserted into the insert molding 420 when the insert molding 420 is ejected, and thus, between the suspension arm body 410 and the insert molding 420. Will increase the binding force.

The above-described vehicle

hybrid suspension arms

1, 300, and 400 may include a coupling part in which a part of the suspension arm body and the insert molding intersect with each other in order to prevent the suspension arm body and the insert molding from being separated.

For example, the coupling part may include a flange structure, a button structure, a reinforcing structure (see FIGS. 14 to 19), and the like, and are not limited thereto. Any structure can be applied.

Such a flange structure, a button structure, and a reinforcement structure may be applied to the hybrid

vehicle suspension arms

1, 300, and 400 repeatedly. That is, a vehicle hybrid suspension arm (1, 300, 400) with a flange structure and a button structure, a vehicle hybrid suspension arm (1, 300, 400) with a flange structure and a reinforcement structure, a vehicle hybrid suspension with a button structure and a reinforcement structure Embodiments of the

arms

1, 300, 400, or the

hybrid suspension arms

1, 300, 400 to which all of the flange structure, the button structure, and the reinforcement structure are applied are also possible.

1 to 13, a flange structure having

coupling flanges

17, 319, and 419 and a button

structure having buttons

224, 322, and 422 have been described in detail. Hereinafter, FIGS. 14 to 19 will be described. The reinforcing structure will be described with reference.

FIG. 14 is a bottom view of the suspension arm body 10 provided with the reinforcement 50, and FIG. 15 is a bottom view of the vehicle hybrid suspension arm 1 provided with the reinforcement 50. FIG. 16 is a cross-sectional view taken along the line A-A 'of FIG. 15, and FIG. 17 is a cross-sectional view taken along the line B-B' of FIG. The suspension arm body 10 illustrated in FIGS. 14 to 17 may have the same shape as the upper arm illustrated in FIG. 2.

14 and 15, at least one reinforcing material 50 is inserted into a 'C' shaped space formed by the suspension arm body 10, and welded to both inner surfaces of the suspension arm body 10 to be fixed. Can be.

The reinforcement 50 may be made of the same metal material as that of the suspension arm body 10, and may be made of, for example, steel. In addition, in order to reduce the weight of the reinforcing material 50, it may be made of an aluminum material.

The reinforcement 50 may have a plate shape. At least a portion of the reinforcement 50 may be embedded by the insert molding 20, and the insert molding 20 may surround the reinforcement 50.

The reinforcement 50 may be disposed in the cross-sectional direction of the leg portion of the suspension arm body 10. The reinforcement 50 may be provided in each leg, for example, three, and the direction in which the reinforcement 50 is installed may be installed not only in the direction perpendicular to the longitudinal direction of the leg portion, but also in a direction oblique to the length direction of the leg portion. Can be.

Referring to FIG. 16, the upper end of the reinforcement 50 is not coupled to the inner upper surface of the suspension arm body 10, and a space of a predetermined size may be provided between them. The insert molding 20 may pass between the inner upper surface of the suspension arm body 10 and the upper surface of the reinforcing material 50.

At least one hole 51 may be formed in the reinforcement 50, and the insert molding 20 may pass through the hole 51.

Referring to FIG. 17, the hole 51 is formed, so that the reinforcement 50 is inserted into the insert molding 20. Therefore, since the insert molding 20 and the reinforcement 50 may be disposed to cross each other, the overall rigidity of the reinforcement 50 and the hybrid arm 1 may be increased, and the suspension arm body 10 and the insert molding ( 20) can increase the binding force.

18 is a cross-sectional view of the vehicle hybrid suspension arm 1 provided with another reinforcement 60.

The other reinforcement 60 may have a shape separated from each other in two pieces, and may have a shape similar to the leg portion of the suspension arm body 10 as a whole. The other reinforcement 60 may include at least two plates connected to each other, and may have a shape in which at least a portion is bent.

The other reinforcement 60 may be disposed along the longitudinal direction of the leg portion. That is, the other reinforcement 60 may have a structure in which a leg portion of the suspension arm body 10 is disposed in duplicate.

Top and side surfaces of the other reinforcing material 60 may be disposed in a direction parallel to the top and side surfaces of the suspension arm body 10, respectively. The top surface of the other stiffener 60, unlike the stiffener 50, can be welded to the inner top surface of the suspension arm body 10 and into the space between each top surface of the separate pieces of the other stiffener 60. Inserts can be inserted.

In addition, the upper surface of the other reinforcement 60, unlike the reinforcement 50, may be spaced apart so that there is a space between the upper surface of the other reinforcement 60 and the inner upper surface of the suspension arm body 10. Therefore, the insert may not be inserted into this space.

The other reinforcement 60 may be provided with the flange structure described above to improve the bonding force with the insert molding 20. Therefore, the lower end of the other reinforcing material 60 may be formed to be bent in the width direction of the reinforcing material 60. In addition, unlike the other reinforcement 60, the end of the suspension arm body 10 may not be formed to be bent in the width direction.

19 is a cross-sectional view of the vehicle hybrid suspension arm 1 provided with another reinforcement 70.

Another reinforcement 70, unlike other reinforcement 60, may have a structure without being divided into two pieces. The inner upper surface of the suspension arm body 10 and the upper surface of another reinforcing material 70 may be spaced apart by a predetermined distance to form a space. Since the insert molding 20 is not inserted into the space, the cross section of the suspension arm body 10 may have a rectangular cross-sectional structure, and the rigidity of the suspension arm body 10 may be increased.

Another reinforcement 70 may be provided with a flange structure in order to improve the bonding force with the insert molding 20. Therefore, the lower end of the other reinforcing material 70 may be formed to be bent in the width direction of the reinforcing material 70. In addition, unlike the other reinforcing material 70, the end of the suspension arm body 10 may not be formed to be bent in the width direction.

When the other reinforcement 60 and another reinforcement 70 described above are disposed in the

hybrid suspension arms

300, 400 shown in FIGS. 8 to 13, this

reinforcement

60, 70 is one of two leg portions. It can be arranged to extend from a portion of the leg portion of the other leg portion.

Below, in the ball joint 40 shown in FIG. 1 and FIG. 5, the structure for improving the contact ratio between the ball stud 41 and the ball bearing 42 is shown.

20 is a perspective view illustrating a structure in which

grooves

421 and 424 are applied to the ball bearing 42 shown in FIG. 5. On the inner spherical surface of the ball bearing 42, a longitudinal groove 421 or a lateral groove 424 may be formed.

The presence of

such grooves

421, 424 allows lubricant or grease to be filled into the

grooves

421, 424, and when the ball stud 41 is moved, these greases are better distributed in the sphere of the ball of the ball stud 41. . Therefore, the ball portion of the ball stud 41 and the inner spherical surface of the ball bearing 42 can be made to contact more smoothly.

FIG. 21 is a perspective view illustrating a structure in which a slot 423 is applied to the ball bearing 42 shown in FIG. 5.

Slot 423 may be disposed along the upper cutting line of the ball bearing 42. The slot 423 can reduce the pressure applied to the inner spherical surface of the ball bearing 42 in the moving direction of the ball stud 41 when the ball stud 41 moves, so that the ball bearing 42 and the ball stud ( The overall contact rate of 41) can be improved.

FIG. 22 illustrates experimental data for selecting an appropriate number of holes formed in the

vehicle hybrid arms

1, 300, and 400 according to various embodiments.

In the

vehicle hybrid arms

1, 300, 400 described above, it is necessary to select an appropriate number of small diameter holes or medium diameter holes. In contrast, in the case of large diameter holes, since only one is generally present, there is no need to select the number.

In the test conditions on the right, in case (a), the number of holes corresponds to the largest number, in case of (b), the number of holes is smaller than that of (a), and in case of (c), the number of holes is Decided to.

Examining the graph on the left, the greater the number of buttons, the greater the effect of insert molding, jointing, and strength reinforcement. However, when there are buttons above the appropriate range numbers, the reinforcing effect can be reduced. Based on this, it can be seen that the maximum number of buttons does not produce the maximum synergy effect unconditionally.

In the case of the U-shaped vehicle hybrid arm 1 used as the upper control arm, as shown in FIG. 2, about 2 to 4 medium diameter holes 122 and small diameter holes 124 are formed in each leg. It is preferable to arrange.

In the case of the 'λ'-shaped vehicle

hybrid suspension arms

300 and 400 used as the lower control arm, it is also preferable that about 2 to 4 buttons are arranged on each leg. Specifically, it is preferable that about 2 to 4 buttons are disposed in the long leg portion where the large diameter hole is formed, and about 1 to 3 buttons are disposed on the short leg portion where the ball joint is installed.

While the technical spirit of the present disclosure has been described with reference to some embodiments and the examples shown in the accompanying drawings, the technical spirit and scope of the present disclosure may be understood by those skilled in the art. It will be appreciated that various substitutions, modifications, and alterations can be made in the scope. Also, such substitutions, modifications and variations are intended to be included within the scope of the appended claims.

Claims

Suspension arm body made of steel; And

Hybrid suspension arm for a vehicle comprising an insert molding is coupled to the suspension arm body.
The method of claim 1,

In order to prevent separation of the suspension arm body and the insert molding, the suspension arm body and a portion of the insert molding includes a coupling portion intersecting with each other,

The coupling portion includes a flange structure,

The flange structure,

A coupling flange formed to be bent inward in a width direction of the suspension arm body; And

A hybrid suspension arm for a vehicle that is part of the insert molding and includes a fixing portion into which the coupling flange is inserted.
The method of claim 1,

In order to prevent separation of the suspension arm body and the insert molding further comprises a coupling portion of the suspension arm body and a part of the insert molding cross each other,

The coupling portion includes a reinforcing structure,

The reinforcement structure is a vehicle hybrid suspension arm comprising a reinforcement is inserted into the suspension arm body fixed and in contact with the insert molding.
The method of claim 3,

The reinforcing material is disposed in a direction parallel to the cross-sectional direction of the suspension arm body,

The insert molding vehicle hybrid suspension arm surrounding the reinforcement.
The method of claim 4, wherein

At least one hole is formed in the reinforcing material,

The insert molding vehicle hybrid suspension arm passes through the hole.
The method of claim 3,

The reinforcing material is a vehicle hybrid suspension arm is disposed in a direction parallel to the longitudinal direction of the suspension arm body.
The method of claim 6,

The end of the reinforcing material is a vehicle hybrid suspension arm is formed to be bent in the width direction of the reinforcing material.
The method of claim 1,

In order to prevent separation of the suspension arm body and the insert molding further comprises a coupling portion of the suspension arm body and a part of the insert molding cross each other,

The coupling portion includes a button structure,

The button structure,

One or more holes formed in the suspension arm body;

And one or more buttons formed from the insert molding and inserted and filled into the one or more holes.
The method of claim 8,

The suspension arm body includes two leg portions and a joint portion integrally connecting the two leg portions;

The insert molding includes two leg portions and a joint portion integrally connecting the two leg portions;

The holes include one or more small diameter holes disposed at predetermined intervals along a length direction in each of the two leg portions;

The at least one button is a vehicle hybrid suspension arm is formed to extend in the radial direction to the peripheral edge of the small diameter hole.
The method of claim 9,

The small diameter hole is provided in plurality;

At least one medium diameter hole having a larger diameter than the small diameter hole is formed between the plurality of small diameter holes;

And a portion of the insert molding is inserted into the middle diameter hole, and a middle diameter coupling edge extending radially to a peripheral edge of the middle diameter hole is formed in the insert molding.
The method of claim 10,

A large diameter hole having a diameter larger than the middle diameter hole is formed in the joint part of the suspension arm body;

And a part of the insert molding is inserted into the large diameter hole, and the large diameter coupling edge extending radially to the peripheral edge of the large diameter hole is formed in the insert molding.
Suspension arm body made of steel;

An insert molding which is inserted into and coupled to the suspension arm body;

The suspension arm body,

Two leg portions; And

A joint part for integrally connecting the two leg parts;

Including,

Bush pipes are welded to each leading end of the two leg portions;

A hybrid suspension arm for a vehicle in which a ball joint pipe is welded to a distal end of the joint part.
The method of claim 12,

The ball joint pipe is located at a central portion between the bush pipes;

The bush pipes are arranged to be open in the horizontal direction;

The ball joint pipe is a hybrid suspension arm for a vehicle disposed to be opened in the vertical direction.
The method of claim 13,

Bushes are respectively press-fitted into the bush pipes;

Hybrid ball suspension arm for the vehicle is coupled to the ball joint by the ball joint pipe.
The method of claim 12,

The insert molding has a vehicle hybrid suspension arm is formed by protruding integrally one or more plaid reinforcement ribs.
Suspension arm body made of steel;

An insert molding which is inserted into and coupled to the suspension arm body;

The suspension arm body has a vehicle hybrid suspension arm comprising two legs formed integrally with each other.
The method of claim 16,

One leg portion of the two leg portions is integrally formed with a bush-shaped bush engaging protrusion;

The insert molding is inserted into and coupled to the bush engagement protrusion;

The insert molding is joined by injection to the other leg of the two legs;

A hybrid suspension arm for a vehicle in which a ball joint is inserted and integrally injection-inserted into the coupling tip of the insert molding.
The method of claim 17,

A large diameter hole is formed in the suspension arm body, and a vehicle suspension is coupled to the large diameter hole by pressing the bush.
The method of claim 18,

The large diameter hole is a vehicle hybrid suspension arm is formed on one side of the suspension arm body between the bush coupling protrusion and the ball joint.
Suspension arm body made of steel;

An insert molding which is inserted into and coupled to the suspension arm body;

The suspension arm body includes two leg portions,

The insert molding is injection molded into at least one leg portion of the two leg portions;

A hybrid suspension arm for a vehicle in which a ball joint is inserted and integrally injection-inserted into the coupling leading end of the insert molding.
The method of claim 20,

A hybrid bush suspension arm for a vehicle having a large diameter bushing coupling hole formed at a distal end of one of the two leg portions, such that a bush is press-fitted into the large diameter bushing coupling hole.
The method of claim 21,

A hybrid suspension arm for a vehicle in which a bush pipe is integrally coupled to the corner where the two leg parts meet.
The method of claim 22,

The bush pipe is a hybrid suspension arm for a vehicle disposed between the ball joint and the large diameter bushing hole.
The method of claim 20,

A cervical hole is formed in one leg portion of the two leg portions;

A hybrid suspension arm for a vehicle in which a suspension hole flange bent toward the inside of the insert molding is provided in the suspension arm body.
Manufacturing a ball stud using steel;

Manufacturing a ball bearing using plastic;

Coupling the ball bearing to the ball stud;

Manufacturing a suspension arm body using a steel sheet;

Attaching bush pipes and ball joint pipes to the suspension arm body;

Pressing and assembling the assembly of the ball stud and the ball bearing into a ball joint pipe;

Inserting the suspension arm body into a mold to inject a plastic resin such that insert molding is coupled to the suspension arm body;

Assembling a bush into the bush pipe;

And covering the ball stud with a dust cover and fixing the ring stud with a ring clip.
The method of claim 25,

The method of manufacturing a hybrid suspension arm for a vehicle further comprising the step of injecting lubricant into the ball bearing.
The method of claim 25,

The suspension rock body is

Two leg portions; And

A joint part for integrally connecting the two leg parts;

Method for manufacturing a hybrid suspension rock for vehicles comprising a.
The method of claim 25,

The ball joint pipe, the central portion between the bush pipes

Located;

The bush pipes are arranged to be open in the horizontal direction;

The ball joint pipe is a method of manufacturing a hybrid suspension arm for a vehicle is arranged to be opened in the vertical direction.
Suspension rock body;

Insert moldings inserted into the suspension body;

And a reinforcing member positioned within the suspension arm body and in contact with the insert molding.
The method of claim 29,

The reinforcement is a vehicle hybrid suspension arm is disposed along the longitudinal direction of the suspension arm body.
The method of claim 29,

The reinforcing material is a vehicle hybrid suspension arm having a plate shape.
The method of claim 29,

The reinforcement is a vehicle hybrid suspension arm comprising at least two plates connected to each other.
The method of claim 29,

The reinforcing material is a vehicle hybrid suspension arm having at least a portion bent shape.
The method of claim 29,

At least a portion of the reinforcement is embedded in the vehicle hybrid suspension arm.
The method of claim 29,

At least one hole is formed in the stiffener hybrid vehicle suspension arm.
The method of claim 29,

The suspension arm body,

Upper surface;

A side surface extending from the top surface,

One side of the stiffener is in contact with the upper surface of the suspension arm body, the other side of the reinforcement vehicle hybrid suspension arm in contact with the side of the suspension arm body.
The method of claim 36,

The upper surface of the suspension arm body, the vehicle is a hybrid suspension arm, the central hole is formed in the center portion when the total length of the suspension arm body divided into three.
The method of claim 36,

At least one concave portion is formed on the upper surface of the suspension arm body vehicle hybrid suspension arm.
The method of claim 38,

At least one through hole is formed in the recess of the vehicle hybrid suspension arm.
The method of claim 29,

The suspension arm body includes two leg portions formed integrally with each other,

A ball joint is coupled to the leading end of one leg of the two legs,

The hybrid suspension arm for a vehicle in which the bush hole is formed at the tip of the other leg of the two legs.
The method of claim 40,

The reinforcing material is a vehicle hybrid suspension arm arranged to extend from a portion of one leg portion of the two leg portions to a portion of the other leg portion.
The method of claim 40,

Hybrid suspension arm for a vehicle in which the bush pipe is integrally coupled to the opposite end of the leg portion to which the ball joint is coupled.
The method of claim 40,

The upper surface of the suspension arm body is formed with a plurality of holes,

The number of holes formed in the leg portion coupled to the ball joint, the vehicle hybrid suspension arm is equal to or less than the number of holes formed in the other leg portion.
The method of claim 42, wherein

Part of the holes of the plurality of holes is a hybrid vehicle suspension suspension vehicle is disposed in the portion adjacent to the bush hole or the ball joint.
The method of claim 40,

Wherein said insert molding includes reinforcing ribs formed in at least a portion of at least one leg portion of said two leg portions.
The method of claim 45,

The reinforcement rib is a vehicle hybrid suspension arm is disposed on one leg of the two legs.