KR101865028B1 - Self piercing rivet using join structure of different kinds materials - Google Patents

Self piercing rivet using join structure of different kinds materials Download PDF

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Publication number
KR101865028B1
KR101865028B1 KR1020160180364A KR20160180364A KR101865028B1 KR 101865028 B1 KR101865028 B1 KR 101865028B1 KR 1020160180364 A KR1020160180364 A KR 1020160180364A KR 20160180364 A KR20160180364 A KR 20160180364A KR 101865028 B1 KR101865028 B1 KR 101865028B1
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KR
South Korea
Prior art keywords
plate
self
piercing rivet
present
shank
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KR1020160180364A
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Korean (ko)
Inventor
황석환
이문용
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주식회사 성우하이텍
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Priority to KR1020160180364A priority Critical patent/KR101865028B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04—Rivets; Spigots or the like fastened by riveting
    • F16B19/08—Hollow rivets; Multi-part rivets
    • F16B19/086—Self-piercing rivets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04—Rivets; Spigots or the like fastened by riveting
    • F16B19/08—Hollow rivets; Multi-part rivets
    • F16B19/10—Hollow rivets; Multi-part rivets fastened by expanding mechanically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/04—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of riveting

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Insertion Pins And Rivets (AREA)

Abstract

Disclosed is a self piercing rivet for joining a heterogeneous material. The disclosed self piercing rivet for joining a heterogeneous material is intended to integrally join triple-layered plates, including steel plates and non-ferrous plates, and may comprise: i) a body unit; ii) a first shank unit integrally connected to one surface of the body unit, penetrating through one of the plates and being press-fitted into the other plate; and iii) a second shank unit integrally connected to the other surface of the body unit and being press-fitted into another plate.

Description

TECHNICAL FIELD [0001] The present invention relates to a self-piercing rivet,

An embodiment of the present invention relates to a structure for joining dissimilar materials using a self-piercing rivet, and more particularly, to a self-piercing rivet for joining dissimilar materials using a self-piercing rivet in which a steel material and a non- The present invention relates to a hetero-material bonded structure.

Recently, the application of lightweight materials has been increasing to improve the fuel efficiency. Although the combination of different materials such as aluminum material and steel material increases in accordance with the increase of the lightweight materials, when the welding is applied to such a combination of steel materials, quality problems due to galvanic corrosion occur.

Accordingly, in the related art, a dissimilar material is bonded as a very limited bonding method of a mechanical bonding method using a laser brazing method, a bonding method using a structural adhesive, or a fastening part such as a self-piercing rivet (SPR: Self Piercing Rivet).

Among them, the mechanical joining method using the fastening parts such as the self-piercing rivet is a typical method of joining the different materials of the non-ferrous material and the steel material, and presses the self-piercing rivet with the hydraulic or pneumatic pressure to the bonded object of mutually overlapping materials, Thereby bonding the objects to be bonded.

In the self-piercing rivet joint method as described above, a self-piercing rivet is used which is composed of a head and a partially hollow cylindrical shank for fastening the object to be joined.

The self-piercing rivet is pierced by the punch of the setting tool so that the shank penetrates the top plate (e.g., a non-ferrous plate) of the object to be joined and flares outward along the die of the die (also known in the art as " The upper and lower plates of the object to be joined can be joined while the shank is press-fitted into the lower plate (for example, a steel plate) of the object to be bonded with the head portion supporting the upper plate.

However, the mechanical joining method of the dissimilar materials using such a self-piercing rivet may cause quality problems due to the ribbing corrosion (potential difference corrosion) as the head of the self-piercing rivet supports the upper surface of the upper plate and is exposed to the outside .

On the other hand, in the industry, triple ply of steel material and non-ferrous material may be used as necessary. However, due to limit of shank length and plastic deformation, self-piercing rivet has difficulty in joining steel material and non- .

The matters described in the above background section are intended to enhance understanding of the background of the invention and may include matters not previously known to those having ordinary skill in the art to which the present invention belongs.

Embodiments of the present invention provide a heterogeneous material bonding structure using a self-piercing rivet for bonding dissimilar materials, which is more advantageous in corrosion resistance by bonding three-ply sheet materials including a steel material and a non-iron material through self-piercing rivets that are not exposed to the outside I want to.

delete

A self-piercing rivet for joining dissimilar materials according to an embodiment of the present invention is for integrally joining a plate material of steel material and a plate material of non-iron material integrally with each other, i) a body part, and ii) A first shank portion integrally connected to one surface of the body and penetrating through one of the plate members and being press-fitted into the other plate member; iii) a first shank portion integrally connected to the other surface of the body portion, Two shank portions.

In addition, in the self-piercing rivet for bonding different materials according to the embodiment of the present invention, the body may include a flange extending outwardly along the circumferential direction between the first and second shank portions.

In the self-piercing rivet for bonding dissimilar materials according to an embodiment of the present invention, the first and second shank portions may be provided in a hollow cylindrical shape.

In the self-piercing rivet for bonding dissimilar materials according to the embodiment of the present invention, the first shank portion may be longer than the second shank portion.

In the self-piercing rivet for bonding different materials according to an embodiment of the present invention, the self-piercing rivet may be formed of a steel material, and a plating layer of aluminum or zinc coated on the surface of the steel material may be formed .

In the embodiment of the present invention, a three-fold plate material including a plate material of steel material and a non-ferrous material plate is integrally joined through the self-piercing rivet as described above. The plate material positioned in the middle is a first plate, The first shank portion of the self-piercing rivet passes through the first plate member, and the first shank portion of the self-piercing rivet penetrates through the first plate member when the plate member located on the lower side of the first plate member is referred to as a second plate member and the plate member positioned on the upper side of the first plate member is referred to as a third plate member And a second shank portion of the self-piercing rivet is press-fitted into the third plate.

Further, in the dissimilar material bonding structure according to the embodiment of the present invention, the body portion that integrally connects the shank portions between the first and second shank portions may be formed in the upper surface of the first plate material through the flange, Can be supported.

Further, in the dissimilar material bonded structure according to the embodiment of the present invention, the first shank portion penetrates the first plate material by the punching pressure of the punch applied to the body portion, and supports the lower surface of the second plate material Deformed along the molding trough of the lower anvil and press-fitted into the second plate.

Further, in the dissimilar material bonded structure according to the embodiment of the present invention, the second shank portion is press-fitted into the third plate by a pressing force of the upper side anvil applied to the third plate, It can be plastically deformed.

Also, in the dissimilar material bonded structure according to an embodiment of the present invention, the first plate may be formed of any one of a steel plate, a stainless steel plate, a high tensile steel plate, and an ultra high tensile steel plate.

In the dissimilar material bonded structure according to an embodiment of the present invention, the second plate may be formed of any one of a steel plate, a stainless steel plate, a high tensile steel plate, and an ultra high tensile steel plate.

Also, in the dissimilar material bonded structure according to an embodiment of the present invention, the second plate may be made of aluminum or a magnesium alloy material.

In addition, in the dissimilar material bonded structure according to an embodiment of the present invention, the third plate may be made of aluminum or a magnesium alloy material.

Embodiments of the present invention are capable of rigidly joining a three-ply, heterogeneous sheet material comprising a steel material and a non-ferrous material through the body portion of the self-piercing rivet and the first and second shank portions in a mechanical coupling manner.

Further, in the embodiment of the present invention, the plate materials of different materials can be joined in a mechanical coupling manner without externally exposing the self-piercing rivet, so that the corrosion resistance of the dissimilar material bonding structure can be improved, It is possible to prevent the quality problem of the structure from occurring.

In addition, effects obtainable or predicted by the embodiments of the present invention will be directly or implicitly disclosed in the detailed description of the embodiments of the present invention. That is, various effects to be predicted according to the embodiment of the present invention will be disclosed in the detailed description to be described later.

These drawings are for the purpose of describing an exemplary embodiment of the present invention, and therefore the technical idea of the present invention should not be construed as being limited to the accompanying drawings.
1 is a view illustrating a self-piercing rivet for bonding different materials according to an embodiment of the present invention.
2 is a cross-sectional view illustrating a dissimilar material bonding structure according to an embodiment of the present invention.
3A to 3D are views for explaining a bonding method of a dissimilar material bonding structure according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

In the following detailed description, the names of components are categorized into the first, second, and so on in order to distinguish them from each other in the same relationship, and are not necessarily limited to the order in the following description.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

It should be noted that terms such as " ... unit ", "unit of means "," part of item ", "absence of member ", and the like denote a unit of a comprehensive constitution having at least one function or operation it means.

1 is a view illustrating a self-piercing rivet for bonding different materials according to an embodiment of the present invention.

Referring to FIG. 1, the self-piercing rivet 100 according to the embodiment of the present invention can be applied to a step of integrally joining three layers of base materials, for example, body panels (sheet material parts) have.

The base materials are not necessarily limited to those applied to plate member parts for a vehicle body, and may include various body structures such as a body member and a frame.

Furthermore, the scope of protection of the present invention should not be construed as being limited to joining body parts, and the technical idea of the present invention can be applied if it is to assemble parts of various kinds and uses.

The self-piercing rivet 100 according to the embodiment of the present invention may be made of a different material such as steel material and non-iron plate materials 1, 2 and 3 (see FIG. 2) To bond in a bonded manner.

 Hereinafter, referring to the drawings, a middle plate member is referred to as a first plate member 1, a plate member positioned below the first plate member 1 is referred to as a second plate member 2, and a first plate member 1 ) Is referred to as a third plate member 3.

Hereinafter, the following components will be described with reference to the case where the self-piercing rivet 100 is set upright in the up and down direction. The upper side portion is defined as an upper portion, the upper portion and the upper side, Lower part, lower part and lower part.

However, the relative orientation of the orientation can be changed according to the reference positions of the plate materials 1, 2 and 3 and the self-piercing rivet 100 and the joining direction of the joining apparatus, Is not necessarily limited to the reference direction of the present embodiment.

The first plate 1 may include a steel plate. The second sheet material 2 may include a steel sheet material such as the first sheet material 1. [ The third plate 3 may include a non-iron plate. Alternatively, the second plate 2 may comprise a non-ferrous plate.

The self-piercing rivet 100 for joining dissimilar materials according to an embodiment of the present invention is formed by joining three sheets of sheets 1, 2, 3 including a steel material and a non-steel material in a mechanical coupling manner without external exposure .

For this purpose, the self-piercing rivet 100 for bonding the dissimilar materials according to the embodiment of the present invention basically includes a body 10, a first shank portion 30 and a second shank portion 50. The self-piercing rivet 100 is made of a steel material and forms a plating layer C of aluminum or zinc coated on the surface of the steel material.

The reason why the surface of the steel material of the self-piercing rivet 100 is coated with the aluminum plating (ALMAC) or the zinc plating (ZnNi) as described above is that the self-piercing rivet 100 made of different materials, To prevent galvanic corrosion.

In the embodiment of the present invention, the body portion 10 is a connecting body integrally connecting the shank portions 30, 50 between the first and second shank portions 30, 50, The shank portions 30 and 50 are thicker than the shank portions 30 and 50.

The body 10 supports the lower surface of the first plate 1 and the upper surface of the third plate 3 between the first and third plates 1 and 3 and is provided in a circular shape. Here, the body 10 includes a flange 11 extending outwardly from the edge along the circumferential direction between the first and second shank portions 30, 50. The body portion 10 is not limited to being provided in a circular shape, and may be formed in various shapes other than a circular shape.

In the embodiment of the present invention, the first shank portion 30 is integrally connected to one surface (lower surface when viewed from the drawing) of the body portion 10, passes through the first plate 1, (2). Hereinafter, the distal end portion corresponding to the connection end portion connected to the body portion 10 of the first shank portion 30 is referred to as a free end.

In the embodiment of the present invention, the second shank portion 50 is disposed coaxially with the first shank portion 30, and is integrally formed on the other surface (the upper surface when viewed from the drawing) of the body portion 10 And is press-fitted into the third plate member 3. Hereinafter, the distal end portion corresponding to the connection end portion connected to the body portion 10 of the second shank portion 50 is referred to as a free end.

In the first and second shank portions 30 and 50, the free ends of the first and second shank portions 30 and 50 are formed into a sharp shape toward the end portion. The first and second shank portions 30 and 50 are connected to the upper and lower sides of the body portion 10 with the body portion 10 interposed therebetween. . Here, the first shank portion 30 is longer than the second shank portion 50.

Hereinafter, a heterogeneous material bonding structure 200 using the self-piercing rivet 100 for bonding different materials according to an embodiment of the present invention will be described in detail with reference to FIG.

2 is a cross-sectional view illustrating a dissimilar material bonding structure according to an embodiment of the present invention.

Referring to FIGS. 1 and 2, a dissimilar material bonding structure 200 according to an embodiment of the present invention includes three sheets of first, second, and third plates 1, 2, and 3 including a steel material and a non- And is integrally joined through the self-piercing rivet 100 as described above.

In the embodiment of the present invention, the first plate 1 of the first, second and third plates 1, 2 and 3 is located in the middle, the second plate 2 is located in the middle of the first plate 1, And the third plate member 3 is located on the upper side of the first plate member 1.

Here, the first plate 1 may include a steel plate such as a steel plate, a stainless steel plate, a high tensile steel plate, and an ultra high tensile steel plate. The second plate 2 may include steel plate materials such as steel plate, stainless steel plate, high tensile steel plate, and ultra high tensile steel plate as the first plate 1. The third plate 3 may include a non-iron plate such as aluminum or a magnesium alloy. Alternatively, the second plate 2 may comprise a non-ferrous plate such as aluminum or a magnesium alloy material.

In the embodiment of the present invention, the first shank portion 30 of the self-piercing rivet 100 penetrates the first plate 1 through its free end and is press-fitted into the second plate 2. The first shank portion 30 passes through the first plate 1 due to the punching pressure applied to the body portion 10 and the free end is plastically deformed in the radially outward direction, .

And the second shank portion (50) of the self-piercing rivet (100) is press-fitted into the third plate (3) through the free end thereof. The free end of the second shank portion 50 is plastically deformed in the radially outward direction by a pressing force applied to the third plate member 3 and can be interlocked with the third plate member 3.

The body portion 10 integrally connecting the shank portions 30 and 50 between the first and second shank portions 30 and 50 as described above is inserted into the body portion 10 of the first plate 1 through the flange 11, And supports the upper surface and the lower surface of the third plate 3.

Meanwhile, the self-piercing rivet 100 according to the embodiment of the present invention forms a plating layer C of aluminum or zinc coated on the surface of a steel material. Therefore, in the embodiment of the present invention, it is possible to prevent galvanic corrosion due to the combination of the different material, that is, the non-ferrous material of the self-piercing rivet 100 made of steel.

Hereinafter, a joining method using the self-piercing rivet 100 of the dissimilar material joining structure 200 configured as described above will be described in detail with reference to the accompanying drawings.

3A to 3D are views for explaining a bonding method of a dissimilar material bonding structure according to an embodiment of the present invention.

3A, the first and second plates 1 and 2 are disposed so as to overlap with each other in the embodiment of the present invention. The second plate 2 is disposed below the first plate 1 . In the embodiment of the present invention in which the first and second plates 1 and 2 are supported on the lower anvil 101, the self-piercing rivet 100 is supplied to the upper surface of the first plate 1 do.

3B, a punching pressure is applied to the body portion 10 of the self-piercing rivet 100 through the punch 103 in the embodiment of the present invention. At this time, the punch 103 can apply a punching pressure to the body portion 10 through the inside of the second shank portion 50.

The first shank portion 30 of the self-piercing rivet 100 penetrates (pierces) the first plate member 1 by the punching pressure of the punch 103 and presses the first plate member 1 by the punching pressure of the punch 103, And is interlocked with the second plate 2. At this time, the body portion 10 of the self-piercing rivet 100 supports the upper surface of the first plate 1.

Next, in the embodiment of the present invention, the third plate 3 is disposed on the second shank portion 50 of the self-piercing rivet 100, as shown in Fig. 3C.

Next, in the embodiment of the present invention, as shown in FIG. 3D, the third plate member 3 is pressed through the upper anvil 105. The second shank portion 50 of the self-piercing rivet 100 is press-fitted into the third plate member 3 by the urging force of the upper anvil 105. The second shank portion 50 of the self- Is plastically deformed radially outwardly and interlocked with the third plate (3). At this time, the body portion 10 of the self-piercing rivet 100 supports the lower surface of the third plate 3.

According to the embodiment of the present invention as described above, the three-ply heterogeneous sheet materials 1, 2, and 3 including the steel material and the non-iron material are inserted into the body portion 10 of the self-piercing rivet 100, And the second shank portions 30, 50 in a mechanical coupling manner.

Therefore, in the embodiment of the present invention, the plate materials 1, 2 and 3 of different materials can be joined in a mechanical coupling manner without externally exposing the self-piercing rivet 100, so that the corrosion resistance of the dissimilar material- And it is possible to prevent the occurrence of quality problems of the dissimilar material bonding structure 200 due to corrosion.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Other embodiments may easily be proposed by adding, changing, deleting, adding, etc., but this is also within the scope of the present invention.

1, 2, 3 ... plate
10 ... body part
11 ... Flange
30: first shank portion
50 ... second shank portion
100 ... Self-Pierced Rivet
101 ... lower anvil
102, 106 ... molding
103 ... punch
105 ... upper anvil
200 ... Dissimilar material bonding structure
C ... plated layer

Claims (13)

delete delete delete delete delete And a second shank portion integrally connected to the other surface of the body portion, wherein the first shank portion integrally connected to one surface of the body portion, and the second shank portion integrally connected to the other surface of the body portion, A three-piece sheet material including a sheet material is integrally joined,
When a plate material positioned in the middle is referred to as a first plate material, a plate material positioned under the first plate material is referred to as a second plate material, and a plate material positioned above the first plate material is referred to as a third plate material,
The first shank portion penetrates through the first plate and is press-fitted into the second plate,
And the second shank portion is press-fitted into the third plate member. The method according to claim 6,
Wherein a body portion integrally connecting these shank portions between the first and second shank portions supports an upper surface of the first plate and a lower surface of the third plate through a flange. The method according to claim 6,
The first shank portion
And the second plate member is press-fitted into the second plate member by being pushed through the first plate member by the punching pressure of the punch applied to the body portion, plastic deforming along the molding anchor of the lower anvil supporting the lower surface of the second plate member, Wherein the first and second substrates are bonded to each other. 9. The method of claim 8,
The second shank portion
Is press-fitted into the third plate by a pressing force of an upper anvil applied to the third plate, and is plastically deformed along a forming bone of the upper anvil. The method according to claim 6,
Wherein the first plate is one of a steel plate, a stainless steel plate, a high tensile steel plate, and an ultra high tensile steel plate. 11. The method of claim 10,
Wherein the second plate is one of a steel plate, a stainless steel plate, a high tensile steel plate, and an ultra high tensile steel plate. 11. The method of claim 10,
Wherein the second plate is made of aluminum or a magnesium alloy. 13. The method according to claim 11 or 12,
Wherein the third plate is made of aluminum or a magnesium alloy.
KR1020160180364A 2016-12-27 2016-12-27 Self piercing rivet using join structure of different kinds materials KR101865028B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3844408A4 (en) * 2018-08-29 2021-07-07 Magnesium Products of America, Inc. Artificial aluminum layers for fastening magnesium castings

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020048487A1 (en) * 1997-01-20 2002-04-25 Dieter Mauer Punch rivet, riveted joints produced with it, riveting tool and method of producing a riveted joint
JP2009142889A (en) * 2007-12-18 2009-07-02 Nissan Motor Co Ltd Joining method using self-piercing rivet and die for rivet joining
JP2011099482A (en) * 2009-11-04 2011-05-19 Hitachi Metals Ltd Self-pierce rivet and method for manufacturing the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020048487A1 (en) * 1997-01-20 2002-04-25 Dieter Mauer Punch rivet, riveted joints produced with it, riveting tool and method of producing a riveted joint
JP2009142889A (en) * 2007-12-18 2009-07-02 Nissan Motor Co Ltd Joining method using self-piercing rivet and die for rivet joining
JP2011099482A (en) * 2009-11-04 2011-05-19 Hitachi Metals Ltd Self-pierce rivet and method for manufacturing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3844408A4 (en) * 2018-08-29 2021-07-07 Magnesium Products of America, Inc. Artificial aluminum layers for fastening magnesium castings

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