KR102200683B1 - Steering wheel for vehicle with body appearance improving structure and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a steering wheel for a vehicle having an appearance improvement structure and a manufacturing method thereof. According to the present invention, the steering wheel for a vehicle comprises: a first body member; a second body member disposed to face the first body member; an injection part provided between the first body member and the second body member and into which a third body member for fixing the first body member and the second body member to each other is injected; a weight reducing part provided between the first body member and the second body member and spaced apart from the injection part; and an inflow blocking part provided between the injection part and the weight reducing part and blocking the third body member from flowing into the weight reducing part.

Description

Vehicle steering wheel having an exterior improvement structure and its manufacturing method {STEERING WHEEL FOR VEHICLE WITH BODY APPEARANCE IMPROVING STRUCTURE AND MANUFACTURING METHOD THEREOF}

The present invention relates to a vehicle steering wheel having an appearance improving structure and a manufacturing method thereof, and more particularly, to a vehicle steering wheel having an appearance improving structure in which a hollow is formed and a manufacturing method thereof.

In general, a steering system is composed of a steering wheel and a steering column that allow the driver to control the direction of the vehicle, and it is appropriately transformed in a collision situation with a function that controls the driving of the vehicle. It performs the function of reducing injuries. Therefore, the steering system must be equipped with static strength that can withstand the steering force in normal driving conditions and impact strength that can sufficiently absorb impact energy, and it is a structure that is easy to apply ergonomic aspects and aesthetic design to meet consumer preferences. Must be equipped.

The steering wheel is designed to increase the contact area to absorb energy and to cause deformation of the rim and spokes. The steering wheel absorbs energy by its own deformation and at the same time affects the energy absorption of the steering system through the steering axis.It varies according to the type of vehicle.The diameter of the wheel, the number of spokes, and the angle are determined by the operating force required during driving, the dashboard, and It depends on the height.

Existing steering wheels are manufactured by using die-casting magnesium and aluminum to make a frame, and cover the frame with PUR foam to finish it. However, since the armature frame is mainly manufactured in a solid shape, it is difficult to secure enough space for mounting electromagnetic components. In addition, the soft thermosetting polyurethane applied to the grip body is difficult to recycle, causing environmental pollution problems, and the metal die-casting process has a problem of high carbon emission in the manufacturing process due to high energy consumption. In addition, since the metal die-cast has limitations in shape, such as constraints on the bonding site, there is a problem in that it is difficult to adopt various designs in consideration of ergonomic aspects and aesthetic aspects.

The background technology of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-1337471 (registered on November 29, 2013, title of invention: rim of a steering wheel for a vehicle).

An object of the present invention is to provide a steering wheel for a vehicle having an exterior improvement structure capable of preventing defects and unmolded exterior shapes, and a manufacturing method thereof.

In order to solve the above problems, a steering wheel for a vehicle having an appearance improvement structure according to the present invention includes: a first body member; A second body member disposed to face the first body member; An injection unit provided between the first body member and the second body member and into which a third body member for fixing the first body member and the second body member is injected; A weight reduction unit provided between the first body member and the second body member and spaced apart from the injection unit; And an inlet blocking unit provided between the injection unit and the weight reduction unit and blocking the third body member from flowing into the weight reduction unit.

The injection unit may include a first injection unit recessed into the first body member; And a second injection part recessed into the inside of the second body member and disposed to face the first injection part.

The first injection part may include a first inlet part in communication with the outside to introduce the third body member into the first body member; And a first detachment prevention part communicating with the first inlet part and preventing the third body member from being separated from the first body member.

The first departure preventing portion is formed to have a wider width than the first inlet portion to prevent the third body member from being separated from the outside of the first body member.

The second inlet may include a second inlet in communication with the outside to introduce the third body member into the first body member; And a second separation preventing unit communicating with the second inlet unit and preventing the third body member from being separated from the outside of the second body member.

The second departure preventing portion is formed to have a wider width than the second inlet portion to prevent the third body member from being separated from the outside of the second body member.

In addition, a method of manufacturing a vehicle steering wheel having an appearance improvement structure according to the present invention includes: a first molding step of molding a first body member and a second body member; An alignment step of placing the first body member and the second body member to face each other; A second molding step of forming a third body member to fix the first body member and the second body member to each other; And a removing step of removing the first body member and the third body member protruding outward from the second body member.

In the removing step, the third body member is prevented from being separated from the first body member and the second body member by the first separation prevention unit and the second separation prevention unit.

A vehicle steering wheel having an appearance improvement structure according to the present invention can be lightened as a weight reduction unit is formed, and at the same time, design freedom is improved, and various convenience devices can be easily mounted.

In addition, the steering wheel for a vehicle having the appearance improvement structure according to the present invention can block the inflow of resin to the weight reduction unit by the inflow blocking unit, so that stable and reliable molding is possible.

In addition, the steering wheel for a vehicle having an appearance improvement structure according to the present invention can secure stronger adhesion as the first inflow blocking member and the second inflow blocking member protrude on the interface between the first body member and the second body member. I can.

In addition, in the steering wheel for a vehicle having an appearance improvement structure according to the present invention, as the first inflow blocking member and the second inflow blocking member are formed to be inclined in the first direction, the pressing force applied by the injection of the third body member is first introduced. It can be guided in a direction in which the blocking member and the second inflow blocking member are in close contact with each other.

In addition, the steering wheel for a vehicle having an appearance improvement structure according to the present invention can prevent defects in external shape or non-molding by preventing the third body member from being separated by the first and second separation prevention units.

In the method of manufacturing a steering wheel for a vehicle having an appearance improvement structure according to the present invention, all molding operations can be performed in one mold, thereby enabling efficient and rapid molding operations.

In addition, the manufacturing method of a steering wheel for a vehicle having an appearance improvement structure according to the present invention is eco-friendly because the first body member, the second body member, and the third body member can be integrally injection-molded, thereby reducing energy consumption required for molding. I can make it.

1 is a perspective view schematically showing the configuration of a steering wheel for a vehicle having an appearance improvement structure according to an embodiment of the present invention.
2 is a cross-sectional perspective view schematically showing the configuration of a steering wheel for a vehicle having an appearance improvement structure according to an embodiment of the present invention.
3 is an exploded perspective view schematically showing the configuration of a steering wheel for a vehicle having an appearance improvement structure according to an embodiment of the present invention.
4 is an enlarged cross-sectional view schematically showing the configuration of an injection unit and an inlet blocking unit according to an embodiment of the present invention.
5 is a side view schematically showing a manufacturing process of a steering wheel for a vehicle having an appearance improvement structure according to an embodiment of the present invention.
6 is a flowchart schematically illustrating a procedure of a method of manufacturing a steering wheel for a vehicle having an appearance improvement structure according to an embodiment of the present invention.
7 is a flow chart schematically showing the sequence of the inflow prevention step according to an embodiment of the present invention.
8 is a flow chart schematically showing the sequence of the adhesion step according to an embodiment of the present invention.
9 to 11 are cross-sectional views schematically showing a process of a second molding step according to an embodiment of the present invention.

Hereinafter, an embodiment of a steering wheel for a vehicle having an appearance improvement structure according to the present invention will be described with reference to the accompanying drawings.

In this process, the thickness of the lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of users or operators. Therefore, definitions of these terms should be made based on the contents throughout the present specification.

In addition, in the present specification, when a part is "connected (or connected)" with another part, it is not only "directly connected (or connected)", but also "with another member in the middle" Indirectly connected (or connected) is also included. In the present specification, when a part "includes (or includes)" a certain component, it does not exclude other components, but further "includes (or includes)" other components unless otherwise stated. It means you can.

In addition, the same reference numerals may refer to the same components throughout the specification. Even if the same reference numerals or similar reference numerals are not mentioned or described in a specific drawing, the numerals may be described based on other drawings. In addition, even if there is a part in which a reference numeral is not indicated in a specific drawing, the part may be described based on other drawings. In addition, the relative difference between the number, shape, size, and size of the detailed components included in the drawings of the present application are set for convenience of understanding, and the embodiments are not limited and may be implemented in various forms.

1 is a perspective view schematically showing the configuration of a vehicle steering wheel having an appearance improvement structure according to an embodiment of the present invention, Figure 2 is a configuration of a vehicle steering wheel having an appearance improvement structure according to an embodiment of the present invention It is a schematic cross-sectional perspective view, and FIG. 3 is an exploded perspective view schematically showing the configuration of a steering wheel for a vehicle having an appearance improvement structure according to an embodiment of the present invention.

1 to 3, a vehicle steering wheel 1 having an appearance improvement structure according to an embodiment of the present invention includes a first body member 100, a second body member 200, and a third body member. 300), a weight reduction part 400, an injection part 500, and an inflow blocking part 600.

The first body member 100 forms an exterior of one side of the steering wheel 1 for a vehicle having an exterior improvement structure according to an embodiment of the present invention. The first body member 100 is polypropylene, polyamide, polyacetal, polycarbonate, polyphenylene oxide, polybutyrene terephthalate. It can be made of a fiber-reinforced thermoplastic resin such as. As the first body member 100 is manufactured by an injection process, energy consumption required for manufacturing may be reduced, and moldability may be improved. The first body member 100 according to an exemplary embodiment of the present invention may be formed in the shape of a ring having a semicircular cross-sectional shape.

The second body member 200 is disposed to face the first body member 100 to form the other side of the steering wheel 1 for a vehicle having an appearance improvement structure according to an embodiment of the present invention. The second body member 200 is polypropylene, polyamide, polyacetal, polycarbonate, polyphenylene oxide, and polybutyrene terephthalate. ) May be made of a fiber-reinforced thermoplastic resin material. Accordingly, as the second body member 100 is manufactured by an injection process, energy consumption required for manufacturing may be reduced, and moldability may be improved. The second body member 200 according to an exemplary embodiment of the present invention may be formed in the shape of a ring having a semicircular cross-sectional shape. The second body member 200 has a bottom surface disposed to face the bottom surface of the first body member 100 and is fixed in position by a third body member 300 to be described later.

The second body member 200 is disposed in the center of the second body member 200 and connected to the hub 210 connected to the steering shaft, and the second body member 200 and the hub 210 are connected to the driver's operation. According to this, a plurality of spokes 220 for rotating the hub 210 may be installed.

The third body member 300 is injected between the first body member 100 and the second body member 200, more specifically into an injection unit 500 to be described later, and thus the first body member 100 and the second body The members 200 are fixed to each other. Like the first body member 100 and the second body member 200, the third body member 300 may include a material of a fiber-reinforced thermoplastic resin to enable injection molding. The third body member 300 may be provided in plural to fix the first body member 100 and the second body member 200 at a plurality of points. The third body member 300 according to an embodiment of the present invention is formed to have a hardened ring shape by being injected into the injection unit 500. Both ends of the third body member 300 are joined to the first body member 100 and the second body member 200, respectively, to fix the first body member 100 and the second body member 200 to each other. The third body member 300 is provided in a pair and is disposed on both sides of the first body member 100 and the second body member 200, respectively. The shape of the third body member 300 is not limited to the shape shown in FIG. 2, and various design changes may be made according to the shape of the injection unit 500 to be described later.

The weight reduction unit 400 is provided between the first body member 100 and the second body member 200 to reduce the weight of the vehicle steering wheel 1 having an appearance improvement structure according to the present invention. More specifically, the weight reduction unit 400 is provided to form an empty space, that is, a hollow, inside the vehicle steering wheel 1 having an appearance improvement structure according to the present invention to reduce weight and at the same time, various convenience devices for steering. Provide a space where they can be installed. As the weight reduction unit 400 is disposed to be spaced apart from the third body member 300 by an inflow blocking unit 600 to be described later, the third body member 300 is prevented from flowing into the interior.

The weight reduction unit 400 according to an embodiment of the present invention may include a first weight reduction unit 410 and a second weight reduction unit 420.

The first weight reduction part 410 is formed in the shape of a groove that is concavely formed into the inside of the first body member 100. The first weight reduction unit 410 is disposed at an approximately central portion of the first body member 100 to secure a gap with the injection unit 500 to be described later.

The second weight reduction part 420 is formed in the shape of a groove concavely formed into the inside of the second body member 200. The second weight reduction unit 420 is disposed at an approximately central portion of the second body member 200 to secure a gap with the injection unit 500 to be described later. The second weight reduction portion 420 is disposed to face the first weight reduction portion 410 and thus forms a closed curve continuously connected to the first weight reduction portion 410.

The specific cross-sectional shape of the first weight reduction unit 410 and the second weight reduction unit 420 is not limited to the shape shown in FIG. 2, but the steering wheel 1 for a vehicle having an appearance improvement structure according to the present invention Various design changes are possible depending on the shape and type of devices installed inside.

The injection unit 500 is provided between the first body member 100 and the second body member 200, and a third body member that fixes the first body member 100 and the second body member 200 to each other A space in which 300 is injected is provided. As the injection unit 500 is disposed to be spaced apart from the weight reduction unit 400 by an inflow blocking unit 600 to be described later, it is possible to prevent the third body member 300 from flowing into the weight reduction unit 400. . The injection unit 500 is formed so that the third body member 300 injected into the interior is not separated from the injection unit 500. Accordingly, when the third body member 300 is formed, the injection unit 500 may prevent a defect in an external shape or an unmolded shape.

4 is an enlarged cross-sectional view schematically showing the configuration of an injection unit and an inlet blocking unit according to an embodiment of the present invention.

2 to 4, the injection unit 500 according to an embodiment of the present invention includes a first injection unit 510 and a second injection unit 520.

The first injection part 510 is provided in the form of a groove recessed into the inside of the first body member 100 to provide a space into which the third body member 300 is injected. The first injection portions 510 may be provided in a pair and may be disposed at both side ends of the first body member 100, respectively. The first injection unit 510 according to an embodiment of the present invention may include a first inlet 511 and a first departure preventing unit 512.

The first inlet 511 communicates with the outside to introduce the third body member 300 into the first body member 100. The first inlet 511 according to an embodiment of the present invention has a shape of a groove having one side passing through the side end of the first body member 100 and the other side extending toward the center of the first body member 100 Is formed by The first inflow portions 511 are provided in a pair and are disposed to be spaced apart from both side ends of the first body member 100, respectively.

The first separation prevention part 512 communicates with the first inflow part 511 and prevents the third body member 300 from being separated from the outside of the first body member 100. More specifically, the first departure prevention part 512 is provided to have a wider width than the first inflow part 511 to form a stepped on the interface with the first inflow part 511, so that the third body member 300 It prevents the first body member 100 from being separated from the outside. The first separation prevention part 512 according to an embodiment of the present invention has one side of a groove communicating with the end of the first inlet 511 and the other side extending perpendicularly to the inside of the first body member 100. Is formed into a shape.

The second injection part 520 is formed to be recessed into the inside of the second body member 200 to provide a space into which the third body member 300 is injected, and is disposed to face the first injection part 510 so that the first It communicates with the injection part 510. The second injection portions 520 may be provided in a pair and may be disposed at both side ends of the second body member 200, respectively. The second injection unit 520 according to an embodiment of the present invention includes a second inlet 521 and a second departure preventing unit 522.

The second inlet part 521 communicates with the outside to introduce the third body member 300 into the second body member 200. The second inlet 521 according to an embodiment of the present invention has a shape of a groove having one side passing through the side end of the first body member 200 and the other side extending toward the center of the first body member 100 Is formed by The second inlet portions 521 are provided in a pair and are disposed to be spaced apart from both side ends of the second body member 200, respectively. The second inlet 521 functions as an inlet through which the third body member 300 is injected as the upper surface communicates with the lower surface of the first inlet 511 to form a closed curve.

The second detachment preventing part 522 communicates with the second inflow part 521 and prevents the third body member 300 from being separated from the outside of the second body member 200. More specifically, the second departure prevention part 522 is provided to have a wider width than the second inflow part 521 to form a stepped on the interface with the second inflow part 521, so that the third body member 300 It prevents the second body member 200 from being separated from the outside. In the second separation prevention part 522 according to an embodiment of the present invention, one side of the groove communicates with the end of the second inlet 521 and the other side extends vertically to the inside of the second body member 200. Is formed into a shape. The second departure prevention part 522 provides a space in which the third body member 300 can be accommodated as one side communicates with the first separation prevention part 512 to form a closed curve.

The inflow blocking part 600 is provided between the third body member 300 and the weight reduction part 400 to prevent the third body member 300 from flowing into the weight reduction part 400. More specifically, the inflow blocking part 600 is provided in the form of a partition wall interposed between the injection part 500 and the weight reduction part 400, and the third body member 300 injected into the injection part 500 is a weight reduction part ( 400) and block the inflow path. The inflow blocking part 600 may include the same material as the first body member 100 and the second body member 200 as they are molded together when the first body member 100 and the second body member 200 are injected. I can.

2 to 4, the inflow blocking part 600 according to an embodiment of the present invention includes a first inflow blocking member 610, a second inflow blocking member 620, and an adhesion reinforcing part 630 do.

The first inflow blocking member 610 extends from the first body member 100 and blocks the third body member 300 from flowing into the first weight reduction unit 410. The first inflow blocking member 610 may be integrally connected with the first body member 100 as it is molded together with the first body member 100 during the injection process of the first body member 100.

The second inflow blocking member 520 extends from the second body member 200 and is in close contact with the first inflow blocking member 610, and the third body member 300 flows into the second weight reduction unit 420. Block things. The second inflow blocking member 620 may be integrally connected with the second body member 200 as it is molded together with the second body member 200 during the injection process of the second body member 200.

At least one of the first inflow blocking member 610 and the second inflow blocking member 620 may protrude onto the interface between the first body member 100 and the second body member 200. More specifically, the sum of the lengths of the first inflow blocking member 610 and the second inflow blocking member 620 is the second inflow blocking member from the point of the first body member 100 from which the first inflow blocking member 610 extends. The member 620 is formed to have a value longer than the straight length to the point of the second body member 200 extending. In this case, the first inflow blocking member 610 and the second inflow blocking member 620 may be provided to have an elastic restoring force. Accordingly, the first inflow blocking member 610 and the second inflow blocking member 620 may be tightly contacted more strongly as the ends of the first inflow blocking member 610 and the second inflow blocking member 620 interfere with each other and are compressed in the longitudinal direction by the overlapping length.

The first inflow blocking member 610 and the second inflow blocking member 620 may extend obliquely in the first direction. Here, the first direction may be illustrated as a direction toward the injection part 500. Accordingly, the first inflow blocking member 610 and the second inflow blocking member 620 can convert the pressing force applied by the third body member 300 when the third body member 300 is injected into a direction in close contact with each other. I can.

The first inflow blocking member 610 according to an embodiment of the present invention is formed to have a ring shape extending downward from the inner bottom of the first body member 100. The first inflow blocking member 610 is disposed at both sides to face the first weight reduction unit 410 and the first departure prevention unit 512, respectively, so that the first weight reduction unit 410 and the first separation prevention unit 512 ) To block communication. The first inflow blocking member 610 is provided in a pair as the first weight reduction portion 410 is disposed in the center of the first body member 100 and is disposed on both sides of the first weight reduction portion 410, respectively. . The end of the first inflow blocking member 610 extends inclined at a predetermined angle toward the injection part 500. The length at which the first inflow blocking member 610 extends has a value longer than the length from the inner bottom of the first body member 100 to the interface between the first body member 100 and the second body member 200.

The second inflow blocking member 620 according to an embodiment of the present invention is formed to have a ring shape extending upward from the inner bottom of the second body member 200. The second inflow blocking member 620 is disposed to face the second weight reduction unit 420 and the second departure prevention unit 522, respectively, so that the second weight reduction unit 420 and the second separation prevention unit 522 ) To block communication. The second inflow blocking member 620 is provided in a pair as the second weight reduction portion 420 is disposed in the center of the second body member 200 and is disposed on both sides of the second weight reduction portion 420, respectively. The end of the second inflow blocking member 620 extends to be inclined at a predetermined angle toward the injection unit 500. The length at which the second inflow blocking member 620 extends has a value longer than the length from the inner bottom of the second body member 200 to the interface between the first body member 100 and the second body member 200.

The adhesion strengthening part 630 is provided between the first inflow blocking member 610 and the second inflow blocking member 620 to reinforce the close contact between the first inflow blocking member 610 and the second inflow blocking member 620 . More specifically, the adhesion reinforcing part 630 is provided to maintain a contact state between the ends of the first inflow blocking member 610 and the second inflow blocking member 620, so that the first inflow blocking member 610 and the 2 Enhances the close contact of the inflow blocking member 620.

The adhesion reinforcing part 530 according to an embodiment of the present invention includes a first adhesion reinforcing member 531 and a second adhesion reinforcing member 532.

The first adhesion reinforcing member 531 protrudes from at least one of the first inflow blocking member 610 and the second inflow blocking member 620. The first adhesion reinforcing member 630 according to an embodiment of the present invention is formed in the shape of a protrusion protruding vertically from the end of the first inflow blocking member 610.

The second adhesion reinforcing member 532 is formed to be recessed into the remaining one of the first inflow blocking member 610 and the second inflow blocking member 620. The second adhesion reinforcing member 532 is disposed to face the first adhesion reinforcing member 531 and the first adhesion reinforcing member 531 is inserted therein. The second adhesion reinforcing member 530 according to an embodiment of the present invention is formed in the shape of a groove vertically recessed into the second inflow blocking member 620. The shape of the second inflow blocking member 620 is formed in a shape corresponding to the shape of the first inflow blocking member 610 so that the first inflow blocking member 610 can be inserted.

Hereinafter, a method of manufacturing a vehicle steering wheel 1 having an appearance improvement structure according to an embodiment of the present invention will be described.

5 is a side view schematically showing a manufacturing process of a vehicle steering wheel having an appearance improvement structure according to an embodiment of the present invention, and FIG. 6 is a manufacturing process of a vehicle steering wheel having an appearance improvement structure according to an embodiment of the present invention. It is a flow chart schematically showing the procedure of the method.

5 and 6, a method of manufacturing a vehicle steering wheel 1 having an appearance improvement structure according to an embodiment of the present invention includes a first molding step (S100), an alignment step (S200), and an inflow prevention step ( S300), a second molding step (S400), and a removing step (S500).

The first molding step (S100) is a step of molding the first body member 100 and the second body member 200.

Looking specifically at the process of the first molding step S100 according to an embodiment of the present invention, first, the first mold 10 and the second mold 20 disposed to face each other are molded and closed.

Thereafter, the molten first body member 100 and the second body member 200 are injected into the inside of the first mold 10 and the second mold 20 by the injection module 30.

Thereafter, the first body member 100 is formed while being hardened inside the first mold 10, and the second body member 200 is formed while being hardened inside the second mold 20. As the first body member 100 and the second body member 200 are disposed on different shafts and are molded, they can be simultaneously molded with only one operation of the injection module 30.

In this case, the weight reduction unit 400, the injection unit 500, and the inflow blocking unit 600 are formed by the first mold 10 and the second mold 20, respectively. 2 When the body member 200 is formed, it may be formed together.

The alignment step (S200) is a step of disposing the first body member 100 and the second body member 200 to face each other.

Looking specifically at the process of the alignment step (S200) according to an embodiment of the present invention, after the molding of the first body member 100 and the second body member 200 is completed, the first mold 10 and the second The mold 20 is retracted and disposed to be spaced apart from each other.

Thereafter, the first mold 10 or the second mold 20 slides in a direction perpendicular to the retreat direction to arrange the first body member 100 and the second body member 200 on the same axis.

The inflow prevention step (S300) is a step of sealing the weight reduction unit 400 by pressing the first body member 100 and the second body member 200 in different directions. More specifically, the inflow prevention step (S300) seals the weight-reduction part 400 by blocking the inflow blocking part 600 between the weight-reduction part 400 and the injection part 500.

7 is a flow chart schematically showing the sequence of the inflow prevention step according to an embodiment of the present invention.

5 and 7, the inflow prevention step (S300) according to an embodiment of the present invention includes a moving step (S310) and a close contact step (S320).

The moving step S310 is a step of moving the first body member 100 and the second body member 200 in different directions.

Looking specifically at the process of the moving step (S310) according to an embodiment of the present invention, after the first body member 100 and the second body member 200 are arranged to face each other by the alignment step (S200), The first mold 10 and the second mold 20 are advanced in opposite directions to each other to approach the first body member 100 and the second body member 200.

In the close contact step (S320), the ends of the first inflow blocking member 610 and the second inflow blocking member 620 are in close contact with each other by pressing the first body member 100 and the second body member 200 disposed in close proximity. Step.

8 is a flow chart schematically showing the sequence of the adhesion step according to an embodiment of the present invention.

Referring to Figures 5 and 8, the contact step (S320) according to an embodiment of the present invention includes an insertion step (S321), a deformation step (S322).

The inserting step S321 is a step in which the first adhesion reinforcing member 631 is inserted into the second adhesion reinforcing member 632.

Looking more specifically at the process of the insertion step (S321) according to an embodiment of the present invention, as the first body member 100 and the second body member 200 are mutually approached by the moving step (S310), the first The first adhesion reinforcing member 631 protruding from the end of the inflow blocking member 610 is inserted into and seated in the second adhesion strengthening member 632 recessed into the second inflow blocking member 620. Relative movement between the ends of the first inflow blocking member 610 and the second inflow blocking member 620 is prevented.

The deformation step (S322) is a step in which the first inflow blocking member 610 and the second inflow blocking member 620 are deformed obliquely in the first direction.

Looking at the process of the deformation step (S322) according to an embodiment of the present invention in more detail, the first body member in a state in which the first adhesion reinforcing member 631 is inserted into the second adhesion reinforcing member 632 ( As 100) and the second body member 200 are pressed, the first inflow blocking member 610 and the second inflow blocking member 620 receive a pressing force in the longitudinal direction.

Thereafter, the first inflow blocking member 610 and the second inflow blocking member 620 are elastically deformed to adhere to each other.

The first inflow blocking member 610 and the second inflow blocking member 620 provided inclined in the first direction by such a pressing force is a point where the interface between the first body member 100 and the second body member 200 coincides. It is deformed to be inclined at a predetermined angle in the first direction to seal the weight reduction unit 400.

The second molding step (S400) is a step of forming the third body member 300 and fixing the first body member 100 and the second body member 200 to each other.

9 to 11 are cross-sectional views schematically showing a process of a second molding step according to an embodiment of the present invention.

Looking at the process of the second molding step (S400) according to an embodiment of the present invention in more detail with reference to FIGS. 9 to 11, the weight of the first inflow blocking member 610 and the second inflow blocking member 620 With the reduction unit 400 closed, the injection module 30 injects the molten third body member 300 into the injection unit 500.

The injected third body member 300 is transmitted to the first and second inflow prevention parts 512 and 522 through the first inflow part 511 and the second inflow part 521.

Thereafter, the third body member 300 introduced into the first and second detachment prevention units 512 and 522 includes the first and second inflow blocking members 610 and 620 as a weight reduction unit. Press in the direction toward (400).

By this pressing force, the first inflow blocking member 610 and the second inflow blocking member 620 formed inclined in the first direction are moved in a direction opposite to the first direction.

As at least one of the first inflow blocking member 610 and the second inflow blocking member 620 is formed to protrude above the interface between the first body member 100 and the second body member 200, the first inflow blocking member The 610 and the second inflow blocking member 620 are more strongly contacted in the longitudinal direction to block the third body member 300 from flowing into the weight reduction unit 400.

Finally, the third body member 300 is hardened inside the injection unit 500 to fix the first body member 100 and the second body member 200 to each other.

The removing step (S500) is a step of removing the first body member 100 and the third body member 300 protruding outward from the second body member 200.

Looking at the process of the removal step (S500) according to an embodiment of the present invention in more detail, after the molding of the third body member 300 according to the second molding step (S400) is completed, the appearance improvement structure according to the present invention The vehicle steering wheel 1 having a is separated from the first mold 10 and the second mold 20.

Thereafter, by applying an external force to the third body member 300 protruding to the outside of the vehicle steering wheel 1 having an appearance improvement structure by the resin inflow path of the first mold 10 and the second mold 20, The outer shape of the vehicle steering wheel 1 having the appearance improvement structure is processed.

In this process, the third body member 300 disposed inside the first and second detachment prevention units 512 and 522 is provided with a first detachment prevention unit 512 and a second detachment prevention unit 522. ) Is prevented from being separated from the first body member 100 and the second body member 200 by being caught by the stepped jaws formed between the first inlet portion 511 and the second inlet portion 521.

The present invention has been described with reference to the embodiments shown in the drawings, but these are only exemplary, and those of ordinary skill in the field to which the technology pertains, various modifications and other equivalent embodiments are possible. I will understand.

Therefore, the true technical protection scope of the present invention should be determined by the following claims.

1: steering wheel for a vehicle having an exterior improvement structure 10: first mold
20: second mold 30: injection module
100: first body member 200: third body member
300: third body member 400: weight reduction unit
410: first weight reduction portion 420: second weight reduction portion
500: injection part 510: first injection part
511: first inflow part 512: first departure prevention part
520: second injection part 521: second inflow part
522: second departure prevention part 600: inflow blocking part
610: first inflow blocking member 620: second inflow blocking member
630: adhesion reinforcing part 631: first adhesion reinforcing member
632: second adhesion reinforcing member S100: first molding step
S200: Alignment step S300: Inflow prevention step
S310: moving step S320: close contact step
S321: Insertion step S322: Transformation step
S400: second molding step S500: removal step

Claims (8)

A first body member;
A second body member disposed to face the first body member;
An injection unit provided between the first body member and the second body member and into which a third body member for fixing the first body member and the second body member is injected;
A weight reduction unit provided between the first body member and the second body member and spaced apart from the injection unit; And
Including; an inlet blocking unit provided between the injection unit and the weight reduction unit, and blocking the third body member from flowing into the weight reduction unit,
The weight reduction unit,
A first weight reduction unit that is concavely formed into the inside of the first body member; And
Including; a second weight reduction portion that is formed concavely into the interior of the second body member and communicates with the first weight reduction portion,
The inflow blocking part,
A first inlet blocking member extending from the first body member and blocking the third body member from flowing into the first weight reduction unit; And
Including; a second inflow blocking member extending from the second body member, in close contact with the first inflow blocking member, and blocking inflow to the second weight reduction unit
At least one of the first inflow blocking member and the second inflow blocking member protrudes above the interface between the first body member and the second body member,
The first inflow blocking member and the second inflow blocking member are compressed in the longitudinal direction by interfering with each other at the ends of the overlapping length,
The first inflow blocking member and the second inflow blocking member are deformed obliquely toward the first direction as they are compressed in the longitudinal direction,
The inflow blocking part,
An adhesion reinforcing part provided between the first inflow blocking member and the second inflow blocking member, the adhesion reinforcing part for reinforcing close contact between the first inflow blocking member and the second inflow blocking member, and
The adhesion reinforcement part,
A first adhesion reinforcing member protruding from at least one of the first inflow blocking member and the second inflow blocking member; And
A second adhesion reinforcing member recessed into the other one of the first inflow blocking member and the second inflow blocking member and disposed to face the first adhesion reinforcing member to insert the first adhesion reinforcing member; A steering wheel for a vehicle having an appearance improvement structure, comprising: a.
The method of claim 1,
The injection unit,
A first injection portion recessed into the first body member; And
A steering wheel for a vehicle having an appearance improvement structure, comprising: a second injection part that is recessed into the inside of the second body member and disposed to face the first injection part.
The method of claim 2,
The first injection unit,
A first inlet part in communication with the outside to introduce the third body member into the first body member; And
And a first departure preventing unit communicating with the first inlet and preventing the third body member from being separated from the outside of the first body member.
The method of claim 3,
The first departure prevention part is formed to have a wider width than the first inlet part to prevent the third body member from being separated from the outside of the first body member.
The method of claim 2,
The second injection unit,
A second inlet part communicating with the outside to introduce the third body member into the first body member; And
And a second departure preventing unit communicating with the second inlet and preventing the third body member from being separated from the outside of the second body member.
The method of claim 5,
The second departure prevention part is formed to have a wider width than the second inlet part to prevent the third body member from being separated from the outside of the second body member.
A first molding step of molding the first body member and the second body member;
An alignment step of placing the first body member and the second body member to face each other;
An inflow prevention step of sealing the weight reduction unit by pressing the first body member and the second body member;
A second molding step of forming a third body member to fix the first body member and the second body member to each other; And
A removing step of removing the third body member protruding outward from the first body member and the second body member; and
The inflow prevention step,
A moving step of moving the first body member and the second body member in different directions; And
A close contact step of pressing the first body member and the second body member to make the first inflow blocking member and the second inflow blocking member in close contact with each other; and
The adhesion step,
An insertion step in which the first adhesion reinforcing member is inserted into the second adhesion reinforcing member; And
Including; a deformation step in which the first inflow blocking member and the second inflow blocking member are deformed obliquely toward a first direction,
At least one of the first inflow blocking member and the second inflow blocking member protrudes above the interface between the first body member and the second body member,
The first inflow blocking member and the second inflow blocking member are compressed in the longitudinal direction by interfering with each other at the ends of the overlapping length,
The method of manufacturing a steering wheel for a vehicle having an appearance improvement structure, characterized in that the first inflow blocking member and the second inflow blocking member are deformed inclined in the first direction as they are compressed in the longitudinal direction.
The method of claim 7,
In the removing step, the third body member is prevented from being separated from the first body member and the second body member by a first separation prevention unit and a second separation prevention unit. Method of manufacturing a steering wheel.

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