KR102623016B1 - Hybrid control arm for vehicle - Google Patents

Abstract

The present invention relates to a hybrid control arm for a vehicle that is lightweight and has high rigidity by combining a metal body and a composite resin reinforcement.
The hybrid control arm for a vehicle according to the present invention includes a metal body 100 including an upper wall and a side wall; and a reinforcing material 200 made of a composite resin material formed through insert injection into the main body. And a flange (106) formed by round bending at the end of the side wall; Dimples 124 formed in a shape that is concavely recessed on the inner surface of the side wall and protrude convexly on the outer surface; and a reinforcing buckle 218, which is a part of the reinforcing material, is integrally connected to the inner surface of the side wall, the flange, and the outer surface of the side wall, and has a dimple embedded therein.
The control arm according to the present invention has a strong bonding structure between the metal body and the composite resin material reinforcement, and can satisfy a certain level of rigidity while being lightweight by minimizing the material of the reinforcement.

Description

Hybrid control arm for vehicle}

The present invention relates to a hybrid control arm for a vehicle, and more specifically, to a hybrid control arm for a vehicle that is lightweight and has high rigidity by combining a metal body and a composite resin reinforcement.

In general, a suspension arm is a member that acts as an arm that controls the movement of a wheel, and is also called a control arm, and is connected to the axle by a ball joint, bush, etc. These control arms can be composed of an upper and lower pair, with the one on top being called the upper arm and the one below being called the lower arm.

Conventional control arms have been manufactured mainly from metal materials, but recently, control arm structures that satisfy a certain level of rigidity while reducing weight for the purpose of lightweighting vehicles have become common.

Accordingly, Republic of Korea Patent Registration No. 10-1393849 and Republic of Korea Patent Publication No. 10-2012-0105470 provide a low-weight, high-rigidity suspension arm by combining a plastic insert molding with a metal body.

However, in the above-mentioned conventional technologies, when cooling after plastic insert injection, the insert molding made of plastic material, which has a higher shrinkage rate than steel, shrinks more than the arm body, resulting in a gap between the arm body and the plastic insert molding, which causes the arm body to shrink. There was a problem of lowering the overall strength.

In addition, the mold for plastic insert injection may not be accurately matched due to the bending portion of the metal arm body, resulting in unmolded portions of the insert molding or flash generation, which deteriorates quality. In addition, there was a problem that the paint on the area where the arm body contacts the mold peeled off, and the contact area was later corroded by rainwater, etc.

Meanwhile, in order to avoid problems caused by inaccurate matching between the arm body and the mold, there is also a method of manufacturing the reinforcement material by injecting it into the entire surface of the arm body or by injecting it to fill the entire inner bottom of the arm body. However, in this method, there was a problem in that excessive reinforcement materials were used unnecessarily and the achievement of weight reduction was hindered.

Republic of Korea Patent No. 10-1393849 (2014.05.02.) Publication Patent No. 10-2012-0105470 (2012.09.25.)

In order to solve the above-mentioned problems, the purpose of the present invention is to provide a hybrid control arm for a vehicle that has a solid structure in which the combination of the metal body and the composite resin material reinforcement is strong.

In addition, the purpose of the present invention is to provide a hybrid control arm for a vehicle having a body structure that is easy to match with a mold for insert injection and allows the injection melt of the reinforcing material to flow uniformly.

A hybrid control arm for a vehicle according to an embodiment of the present invention for achieving the above-described object is a metal structure open downward, including an upper wall and two opposing side walls bent downward from the upper wall. material body; and a reinforcing material made of composite resin that is formed within the main body through insert injection and fills at least a portion of the main body.

And at the ends of the two side walls, flanges are formed by bending round in a direction to expand the opening of the main body; at least one dimple formed in a shape that is concavely recessed in the inner surface of the side wall and protrudes convexly on the outer surface; and a reinforcing buckle that is part of the reinforcing material and is integrally connected to the inner surface of the side wall, the flange, and the outer surface of the side wall, and in which the dimple is embedded.

The dimple is disposed adjacent to a curved portion where the side wall and the flange are connected.

The dimple is further provided with a connection hole formed in the center of the dimple across the inner and outer surfaces of the dimple, and the reinforcing material passes through the connection hole and is connected to the inside and outside of the side wall.

The reinforcing material includes a reinforcing grid that does not fill the lower surface of the upper wall, in which reinforcing ribs diagonally crossing the inner surfaces of the two side walls are crossed in an 'X' shape.

A plurality of the reinforcing grids are integrally connected, and the ends of the reinforcing ribs of adjacent reinforcing grids are connected to each other through the reinforcing buckle.

and at least one fixing hole formed upward and downward through the upper wall; and a button that is part of the reinforcing material and passes through the fixing hole and is formed on the upper surface of the upper wall.

The fixing hole and the button are arranged to correspond to the intersection of the reinforcing ribs.

And the side wall is formed to be inclined at an angle of 2 to 5° in an outer direction of the width of the upper wall, based on a vertical line with the upper wall.

And on one side of the main body, a first connection part penetrating upward and downward; and a ball joint coupled to the first connection part.

The ball joint includes a socket coupled to the first connection part and having first and second openings in communication at the top and bottom; A ball stud including a ball portion and a stud portion, the ball portion being accommodated in the socket; and a ball sheet formed through insert injection in the space between the socket and the ball portion, and covering the first opening.

The ball seat is injection molded simultaneously with the injection molding of the reinforcing material, and is formed separately from the reinforcing material by injecting a composite resin melt through a ball seat gate provided separately from the gate of the reinforcing material.

In addition, the ball joint further includes a ball bearing accommodated in the socket and surrounding the ball portion so that the ball portion can rotate freely within the operating angle range of the ball stud.

The ball bearing includes a lubrication sheet that surrounds a portion of the ball portion, a cap that covers the aspherical surface at the end of the ball portion and is formed integrally with the lubrication sheet, and a fixture that protrudes radially from the outer spherical surface of the lubrication sheet and is supported on the inner surface of the socket. Includes wings.

The ball seat is formed through insert injection in the space between the socket and the ball bearing, and covers the first opening and the second opening.

A hybrid control arm for a vehicle according to another embodiment of the present invention replaces the dimple, and includes at least one forming formed on the side wall by partially cutting the side wall and then bending and protruding the cut portion inward or outward. Protrusions; are provided.

Alternatively, in place of the fixing hole, at least one forming protrusion formed on the upper wall by partially cutting the upper wall and then bending and protruding the cut portion inward or outward is provided.

According to the hybrid control arm for a vehicle of the present invention, the overall weight can be reduced compared to the case of manufacturing from a conventional steel material, thereby achieving lightness, and thus there is a significant effect of reducing the weight of the vehicle and improving fuel efficiency.

In addition, the button and fixing buckle of the reinforcement material provide close contact between the main body and the reinforcement material, resulting in a solid bonding structure. Forces such as load and stress are distributed uniformly throughout the control arm, which has the remarkable effect of securing maximum rigidity relative to the weight. There is.

In addition, the possibility of buckling of the body in the dimple area is reduced. In addition, the area around the reinforcement connected through the connection hole on the side wall of the main body is reinforced with the reinforcement filling the dimple, thereby minimizing stress and creating a more robust binding structure, which has the significant effect of increasing the durability of the control arm.

In addition, since the main body and the reinforcing material have a very strong bonding structure, the unnecessary area of the reinforcing material that was previously filled on the front surface to improve the contact area between the main body and the reinforcing material can be removed, which has a significant effect in reducing manufacturing costs.

In addition, when insert-injecting a reinforcing material made of composite resin, the matching between the main body and the mold is improved, and there is a significant effect of suppressing the occurrence of unmolded parts or flash in the reinforcing material. In addition, by solving the problem of peeling off the paint on the area where the body contacts the mold, there is a significant effect of suppressing factors that reduce durability such as corrosion.

1 and 2 are perspective views of a hybrid control arm for a vehicle according to a preferred embodiment of the present invention.
Figure 3 is a perspective view showing only the main body of the vehicle hybrid control arm shown in Figure 1
FIG. 4 is a cross-sectional view taken along line AA of FIG. 3 in the direction of the arrow.
FIG. 5 is a cross-sectional view taken along line BB in FIG. 3 in the direction of the arrow.
Figure 6 is an enlarged view of portion "A" of Figure 2
Figure 7 is a partial perspective view showing forming protrusions constituting a hybrid control arm for a vehicle according to another embodiment of the present invention.
Figure 8 is a partial cross-sectional view of a ball joint coupled to a hybrid control arm for a vehicle according to a preferred embodiment of the present invention.

Hereinafter, a preferred embodiment of a hybrid control arm for a vehicle according to the present invention will be described with reference to the attached drawings. The vehicle control arm according to the present disclosure is described below by taking the upper control arm as an example, but it is not limited thereto and can also be applied to the lower control arm.

1 and 2 are perspective views of a hybrid control arm for a vehicle according to a preferred embodiment of the present invention.

Referring to Figures 1 and 2, the control arm 10 according to the present invention includes a main body 100 made of metal and a reinforcement material 200 made of composite resin.

The main body 100 may have a “U” shape, for example.

The main body 100 includes an upper wall 102 and two opposing side walls 104 bent downward from the upper wall 102 and has a shape open downward. This body 100 may be formed into an integrated structure by stamping a metal plate.

Here, the main body 100 may be made of steel or non-ferrous metal.

The reinforcing material 200 is formed as an integral part of the main body 100 through insert injection. That is, the reinforcing material 200 fills at least a portion of the space between the upper wall 102 and the side walls 104.

The reinforcing material 200 may be, for example, a composite resin material in which glass fiber or carbon fiber is added to polyamide or polyoxymethylene resin.

The reinforcing material 200 may be configured in a grid-like structure to reduce weight. Additionally, a portion of the reinforcing material 200 may be configured to surround the inside and outside of the side wall 104.

First, the detailed configuration of the main body 100 will be described with reference to the attached drawings.

FIG. 3 is a perspective view showing only the main body of the hybrid control arm for a vehicle shown in FIG. 1, FIG. 4 is a cross-sectional view along line A-A of FIG. 3 in the direction of the arrow, and FIG. 5 is a view showing a cross-section along line B-B of FIG. 3. A drawing showing a cross section in the direction of the arrow is shown.

Referring to FIG. 3, the main body 100 has a “⊂” shape, and a first connection portion 112 is provided at the front center portion and a second connection portion 114 is provided at the rear side. The first connection part 112 is a part where the ball joint 300 is installed for connecting the link parts connected to the wheel side of the vehicle, and the second connection part 114 is a part for connecting the link parts connected to the vehicle body. This is the area where the bush for press-fitting is installed, and can be joined to the main body 100 through welding.

And looking at FIG. 4, the main body 100 has an upper wall 102 and a side wall 104 integrally connected and has a shape that is open downward. And at the end of the side wall 104, a flange 106 is integrally formed by bending round in a direction to expand the opening of the main body 100.

As described above, the upper wall 102, the side wall 104, and the flange 106 are preferably formed as an integrated structure by stamping a substantially “U” shaped metal plate.

And the upper wall 102 is provided with at least one fixing hole 122 extending upward and downward. The fixing hole 122 guides the composite resin melt to partially flow out from the lower surface to the upper surface of the upper wall 102 when the reinforcing material 200 is injection-formed.

Accordingly, the reinforcing material 200 passes through the fixing hole 122 in a molten state and is eluted to the upper surface of the upper wall 102, and then cools to form the button 216. This button 216 prevents the reinforcement 200 from being separated from the main body 100.

In order to firmly couple the main body 100 and the reinforcement 200, it is most preferable that a plurality of fixing holes 122 are provided along the longitudinal direction of the upper wall 102.

Next, the side wall 104 is formed to be inclined at an angle of 2 to 5° in the outer direction of the width of the upper wall 102, based on a vertical line with the upper wall 102. That is, it is formed in a structure in which the width between the side walls 104 becomes wider as it moves from the upper wall 102 side to the flange 106 side.

The structure according to the angle setting of the side wall 104 described above is such that when combining a mold for forming the reinforcement 200 in the main body 100 by insert injection, the mold naturally follows the slope of the side wall 104. Allow it to be inserted. In addition, the composite resin melt naturally flows into the main body 100 along the slope of the side wall 104.

In addition, the side wall 104 is also provided with a dimple 124 as a component to prevent the reinforcement 200 from being separated.

Referring to FIG. 5, the dimple 124 is formed to be concavely recessed in the inner surface of the side wall 104 and to protrude convexly from the outer surface of the side wall 104. Specifically, the dimple 124 has a hemispherical or partially spherical shape. That is, the inner surface of the side wall 104 is pressed into a hemisphere or a partial sphere to protrude outward, and has a dimple structure in which the inner surface is concave and the outer surface is convex.

Accordingly, the reinforcing material 200 is filled in the concave space of the dimple 124 in a molten state, and then cooled to form a convex protrusion that matches the concave shape of the dimple 124. Due to the combined shape of the dimples 124 and protrusions of the main body 100 and the reinforcing material 200, they are firmly fixed in the plane coordinates It becomes.

Here, the edge of the dimple 124, that is, the boundary between the dimple 124 and the side wall 104, is preferably formed as a gently curved surface. This is to ensure that the composite resin melt forming the reinforcing material 200 flows smoothly without eddy currents into the dimple 124.

Meanwhile, the flange 106 is embedded in the reinforcing material 200. As previously mentioned, a portion of the reinforcing material 200 is structured to surround and integrally connect the inner surface of the side wall 104, the flange 106, and the outer surface of the side wall 104.

Therefore, after the reinforcing material 200 is insert-injected into the main body 100, it shrinks when cooled and the force pulling the flange 106 to the inside of the main body 100, that is, in the direction opposite to the bending of the flange 106, is exerted. As it acts, the bond between the main body 100 and the reinforcing material 200 becomes stronger.

More specifically, the flange 106 is embedded in a reinforcing buckle 218, which will be described later, which forms part of the reinforcing material 200. The reinforcing buckle 218 constitutes a part of the reinforcing material 200 and is integrally connected to the inner surface of the side wall 104, the flange 106, and the outer surface of the side wall 104. The specific shape of the reinforcing buckle 218 will be described later when the detailed configuration of the reinforcing material 200 is described.

Furthermore, the dimple 124 is disposed adjacent to a curved portion where the side wall 104 and the flange 106 are connected. Therefore, in a structure where the reinforcing material 200 surrounds the inner surface of the side wall 104, the flange 106, and the outer surface of the side wall 104, the dimple 124 is also embedded within the reinforcing material 200. .

In addition, the central portion of the dimple 124 is provided with a connection hole 126 that penetrates across the inner and outer surfaces of the dimple 124.

And the reinforcing material 200 passes through the connection hole 126 and is connected to the inside and outside of the side wall 104. That is, it is connected between the reinforcing buckles 218 surrounding the inside and outside of the dimple 124. Accordingly, a portion of the reinforcing material 200 is hardened across the connection hole 126, thereby preventing the reinforcing material 200 from being separated from the open side of the main body 100.

Next, the detailed configuration of the reinforcing material 200 will be described with reference to the attached FIGS. 1, 2, and 6. FIG. 6 is an enlarged view of portion “A” of FIG. 2.

Referring to Figures 2 and 6, the reinforcing material 200 has a shape in which reinforcing ribs 212 and 214 diagonally crossing the inner surfaces of the two side walls 104 are crossed in an "X" shape, and the upper wall ( It includes a reinforcing grid 210 that does not fill the lower surface of 102). And the reinforcing material 200 has a structure in which a plurality of reinforcing grids 210 (210-1 to 210-n) are integrally connected.

Here, the ends of the reinforcing ribs (212-1 and 214-2, 214-1 and 212-2) of the adjacent reinforcing grids (210-1, 210-2) contact each other on the inner surface of the side wall (104). connected. Accordingly, the adjacently connected reinforcing ribs 212-1 and 214-2 and the side wall 104 form a triangular structure, thereby providing more solid support.

And at the connection between the reinforcing grids 210-1 and 210-2, a reinforcing buckle 218 in which a portion of the reinforcing material 200 surrounds the longitudinal end of the main body 100 is provided.

The reinforcing buckle 218 has an inner wall 218a in the shape of a surface to increase adhesion to the side wall 104, and the inner wall 218a and the upper end are integrally connected to surround the flange 106. It includes an “L” shaped outer wall (218b) coupled to the outer surface of the side wall (104).

Here, it is preferable that the height of the outer wall 218b is formed lower than the height of the inner wall 218a. That is, the reinforcement buckle 218 is " It is made in the shape of, and the fixing force of the reinforcement 200 is improved by integrally surrounding the inner surface of the side wall 104, the flange 106, and the outer surface of the side wall 104 in a portion of the main body 100.

As mentioned above, the dimple 124 is embedded in the reinforcement buckle 218. Accordingly, although a portion of the reinforcing material 200 is structured to be coupled to the main body 100, the coupling force can be supplemented through coupling with the dimple 124.

In addition, the inner wall 218a and the outer wall 218b are integrally connected through the connection hole 126 penetrating the dimple 124 and are very firmly coupled.

The upper surface of the reinforcing material 200 is joined to the lower surface of the upper wall 102, but is formed in a lattice form and does not fill the entire lower surface of the upper wall 102. And the height of the reinforcing ribs 212 and 214 is 3 mm or more higher than the height from the lower surface of the upper wall 102 to the lower surface of the flange 106. That is, the lower surface of the reinforcing material 200 protrudes more than 3 mm higher than the lower surface of the flange.

The side of the reinforcing material 200 is also joined to the inner wall 218a of the reinforcing buckle 218 to the inner surface of the side wall 104, and does not fill the entire side wall 104.

Meanwhile, it is most preferable that the intersection 213 of the reinforcing ribs 212 and 214 is located at a midpoint in the width direction of the side walls 104. Accordingly, the force supporting the side walls 104 of the reinforcing material 200 may be balanced. In addition, when the injection gate is placed at the intersection 213 of the reinforcing ribs 212 and 214, the flow speed of the composite resin melt becomes uniform for each part, resulting in improved quality of the reinforcing material 200, which is an injection product.

And the fixing hole 122 of the upper wall 102 mentioned above is disposed corresponding to the intersection 213 of the reinforcing ribs 212 and 214. That is, a button 216 passing through the fixing hole 122 is provided at the intersection 213.

Some of the fixing holes 122 may be used as injection gates for the reinforcing material 200.

Figure 7 is a partial perspective view showing the forming protrusion 128 constituting the hybrid control arm 10 for a vehicle according to another embodiment of the present invention.

The forming protrusion 128 may replace the dimple 124 or the fixing hole 122.

Referring to FIG. 7, the forming protrusion 128 is formed on the side wall 104 by partially cutting the side wall 104 and then bending the cut portion inward or outward to protrude. Since this forming protrusion 128 replaces the dimple 124, it is embedded in the reinforcing buckle 218.

Alternatively, the forming protrusion 128 may be provided on the upper wall 102 in place of the fixing hole 122 and be embedded in the button 216.

As described above, the control arm 10 according to the present invention is manufactured by forming the reinforcing material 200 of a composite resin material on the main body 100 of a metal material through insert injection.

At this time, the ball seat 340 of the ball joint 300 is insert injection molded simultaneously with the insert injection molding of the reinforcing material 200.

First, a first connection portion 112 penetrating upward and downward is provided on one side of the main body 100. The first connection portion 112 may be made of a metal material and may be coupled to the front side of the main body 100 through press-fitting and welding.

A ball joint 300 is coupled to the first connection portion 112.

The ball joint 300 includes a socket 310 that is coupled to the first connection portion 112 and has a first opening 312 and a second opening 314 in communication at the top and bottom, and a ball portion 322 that serves as a ball joint. ) and a cap 334 that covers the upper surface of the ball portion 322 to form a closed space between the ball stud 320 accommodated in the socket 310 and the aspherical portion (not shown) at the end of the ball portion 322. ), and a ball seat 340 that surrounds the outer spherical surface of the ball portion 322 and allows the ball stud 320 to move within the operating angle range.

In the cap 334, a lubricant is provided in the space between the aspherical portion of the ball portion 322.

The ball seat 340 is formed through insert injection in the space between the socket 310 and the ball part 322, and surrounds the ball part 322 and covers the upper part of the cap 334 and the first opening 312. ), covering the second opening 314. Since the ball seat 340 is formed by insert injection, the internal shape is formed to match the external shape when the cap 334 is coupled to the ball portion 322.

The ball seat 340 is injection molded simultaneously with the injection molding of the reinforcing material 200, and the composite resin melt is injected through a ball seat gate provided separately from the gate of the reinforcing material 200. It is formed separately from (200).

That is, the ball seat 340 and the reinforcing material 200 are separate components, but are manufactured at once through an insert injection molding process at the same time.

The ball joint 300 surrounds the ball portion 322 so that the ball stud 320 can move, and further includes a ball bearing 330 accommodated in the socket 310.

The ball bearing 330 includes a lubrication sheet 332 surrounding a portion of the ball part 322, a cap 334 formed integrally with the lubrication sheet 332 and covering the aspherical surface at the end of the ball part 322, and The lubricating sheet 332 includes fixed wings 336 that protrude radially from the outer spherical surface and are supported on the inner surface of the socket 310.

In the cap 334, a lubricant is provided in the space between the aspherical portion of the ball portion 322.

The ball seat 340 is formed through insert injection in the space between the socket 310 and the ball bearing 330, and covers the first opening 312.

The central axis of the ball bearing 330 is fixed without shaking because the fixed wing 336 is supported by the inner wall of the socket 310. In addition, after the ball seat 340 is injected, the fixed blade 336 prevents the ball seat 340 from rotating in the circumferential direction.

The above description is merely an illustrative explanation of the technical idea of the present invention, and those skilled in the art will be able to make various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these examples. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights of the present invention.

10: control arm 100: main body
102: upper wall 104: side wall
106: Flange 112: First connection part
114: second connection 122: fixing hole
124: Dimple 126: Connection hole
128: Forming protrusion 200: Reinforcement material
210: Reinforcement grid 212, 214: Reinforcement rib
213: intersection 216: button
218: Reinforcement buckle 218a: Internal wall
218b: External wall 300: Ball joint
310: socket 312: first opening
314: second opening 320: ball stud
322: Ball part 330: Ball bearing
332: Lubrication sheet 334: Cap
336: fixed wing 340: ball seat

Claims (11)

a body made of metal that is open downward and includes an upper wall and two opposing side walls bent downward from the upper wall; and
It includes a reinforcing material made of composite resin that is formed within the main body through insert injection and fills at least a portion of the main body,
Flanges formed at the ends of the two side walls are roundly bent in a direction to expand the opening of the main body;
at least one dimple formed in a shape that is concavely recessed in the inner surface of the side wall and protrudes convexly on the outer surface; and
It is a part of the reinforcing material, and is integrally connected to the inner surface of the side wall, the flange, and the outer surface of the side wall, and includes a reinforcing buckle in which the dimple is embedded,
The dimple is further provided with a connection hole formed through a central portion of the dimple across the inner and outer surfaces of the dimple,
The reinforcing material passes through the connection hole and is connected to the inside and outside of the side wall. According to claim 1,
A hybrid control arm for a vehicle, wherein the dimple is disposed adjacent to a curved portion where the side wall and the flange are connected. delete According to claim 1,
The reinforcement material is,
Reinforcing ribs diagonally crossing the inner surfaces of the two side walls are intersected in an 'X' shape, and a reinforcing grid that does not fill the lower surface of the upper wall,
A hybrid control arm for a vehicle, wherein a plurality of the reinforcing grids are integrally connected, and the ends of the reinforcing ribs of the adjacent reinforcing grids are connected to each other through the reinforcing buckle. According to claim 4,
At least one fixing hole formed vertically through the upper wall; and
A button that is part of the reinforcing material, passes through the fixing hole, and is formed on the upper surface of the upper wall. A hybrid control arm for a vehicle, comprising: According to claim 5,
A hybrid control arm for a vehicle, characterized in that the fixing hole and the button are arranged corresponding to the intersection of the reinforcing ribs. According to claim 1,
A hybrid control arm for a vehicle, wherein the side wall is formed to be inclined at an angle of 2 to 5° in an outer direction of the width of the upper wall, based on a vertical line with the upper wall. According to claim 1,
A first connection part penetrating upward and downward on one side of the main body; and
It includes a ball joint coupled to the first connection part,
The ball joint is,
a socket coupled to the first connection part and having first and second openings in communication with each other in the upper and lower sides;
A ball stud including a ball portion and a stud portion, the ball portion being accommodated in the socket; and
A ball sheet is formed through insert injection in the space between the socket and the ball portion and covers the first opening,
The ball seat is
A hybrid control arm for a vehicle, characterized in that it is injection molded simultaneously with the injection molding of the reinforcing material, and is formed separately from the reinforcing material by injecting a composite resin melt through a ball seat gate provided separately from the gate of the reinforcing material. According to claim 8,
The ball joint surrounds the ball portion so that the ball portion can rotate freely within the operating angle range of the ball stud, and further includes a ball bearing accommodated in the socket,
The ball bearing is,
A lubricating sheet surrounding a portion of the ball portion,
A cap that covers the aspherical surface at the end of the ball portion and is formed integrally with the lubrication sheet, and
It includes a fixed wing that protrudes radially from the outer spherical surface of the lubrication sheet and is supported on the inner surface of the socket,
The ball seat is
A hybrid control arm for a vehicle, formed through insert injection in the space between the socket and the ball bearing, and covering the first opening and the second opening. The method according to any one of claims 1, 2, and 4 to 9,
In place of the dimple,
A hybrid control arm for a vehicle, characterized in that the side wall is provided with at least one forming protrusion formed by partially cutting the side wall and then bending and protruding the cut portion inward or outward. The method of claim 5 or 6,
In place of the fixing hole,
A hybrid control arm for a vehicle, characterized in that the upper wall is provided with at least one forming protrusion formed by partially cutting the upper wall and then bending and protruding the cut portion inward or outward.

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