KR20160109776A - Fastener using self-piercing - Google Patents

Fastener using self-piercing Download PDF

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Publication number
KR20160109776A
KR20160109776A KR1020150034824A KR20150034824A KR20160109776A KR 20160109776 A KR20160109776 A KR 20160109776A KR 1020150034824 A KR1020150034824 A KR 1020150034824A KR 20150034824 A KR20150034824 A KR 20150034824A KR 20160109776 A KR20160109776 A KR 20160109776A
Authority
KR
South Korea
Prior art keywords
self
threaded portion
piercing
nut member
piercing rivet
Prior art date
Application number
KR1020150034824A
Other languages
Korean (ko)
Inventor
강경범
Original Assignee
현대자동차주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR1020150034824A priority Critical patent/KR20160109776A/en
Publication of KR20160109776A publication Critical patent/KR20160109776A/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
    • F16B19/06—Solid rivets made in one piece
    • 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
    • F16B33/00—Features common to bolt and nut
    • F16B33/02—Shape of thread; Special thread-forms
    • 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
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/06—Specially-shaped heads
    • 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
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
    • F16B37/041—Releasable devices
    • F16B37/042—Releasable devices locking by rotation
    • 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
    • F16B33/00—Features common to bolt and nut
    • F16B33/02—Shape of thread; Special thread-forms
    • F16B2033/025—Shape of thread; Special thread-forms with left-hand thread

Abstract

The present invention relates to a fastener using self-piercing which can be mounted very firmly on a panel or a bracket of a vehicle to thereby mount various mounting parts very effectively.
A fastener using self-piercing according to the present invention includes: a self-piercing rivet having a head portion and a shank portion extending downward from the head portion; And a threaded portion extending upward from the head portion of the self-piercing rivet and having a threaded portion formed on an outer circumferential surface thereof, wherein the shank portion is deformable in an outer diameter direction, and a piercing edge is formed at a lower end of the shank portion .

Description

[0001] FASTENER USING SELF-PIERCING [0002]

The present invention relates to a fastener, and more particularly to a fastener using self-piercing which can be mounted very firmly on a mounting point (panel or bracket, etc.) of a vehicle, will be.

As is well known, fasteners such as stud bolts, weld bolts, and the like are fastened to the vehicle by welding or the like to a panel or a bracket, and various mounting parts can be mounted by such stud bolts or weld bolts.

However, the conventional stud bolts have a disadvantage in that the soot is severely generated during the welding, the quality is lowered, and when the welding failure occurs, the welded portion can be separated.

Conventional stud bolts have a disadvantage in that welding slugs frequently occur on the panel or bracket side after the welding, resulting in poor mounting of mounting parts.

In addition, since the conventional welded bolt has to be provided with mounting holes on the panel or bracket side for welding, the watertightness of the welded bolt is deteriorated, and there is a problem in that it causes structural problems, noise and vibration (NVH) problems, and the like.

The present invention has been developed to overcome various drawbacks of the prior art as described above, and it is an object of the present invention to provide a mounting structure for a vehicle, The present invention is directed to providing a fastener using self-piercing which can significantly improve the strength of the fastener.

According to an aspect of the present invention, there is provided a fastener using self-piercing,

A self-piercing rivet having a head portion and a shank portion extending downwardly from the head portion; And

And a screw rod extending upward from the head portion of the self-piercing rivet and having a threaded portion formed on an outer circumferential surface thereof,

The shank portion is deformable in an outer diameter direction, and a piercing edge is formed at a lower end of the shank portion.

A nut member is detachably coupled to a threaded portion of the screw rod. The nut member has a cylindrical structure with a hollow portion formed therein. An outer threaded portion is formed on an outer circumferential surface of the nut member.

An inner thread portion is formed on an inner circumferential surface of the nut member, and the inner thread portion is removably screwed to a thread portion of the screw rod.

And the inner threaded portion and the outer threaded portion have opposite helical directions.

The threaded portion of the screw rod and the inner threaded portion of the nut member have a leftward helical structure and the outer threaded portion of the nut member has a rightward helical structure.

Wherein the threaded portion of the screw rod and the inner threaded portion of the nut member have a rightward helical structure and the outer threaded portion of the nut member has a leftward helical structure.

The head portion of the self-piercing rivet is located on the same plane as the top surface of the portion to which the self-piercing rivet is coupled.

According to another aspect of the present invention, a fastener using self-

A self-piercing rivet coupled by self-piercing action to a predetermined mounting point; And

And a screw rod extending upward from the self-piercing rivet and having a threaded portion formed on an outer circumferential surface thereof.

The mounting portion is a portion where two or more plates are overlapped, and the self-piercing rivet is coupled while clamping two or more plates.

According to the present invention, since the self-piercing rivet and the screw rod are integrated, the screw rod can be very firmly coupled to the panel or the bracket by the self-piercing rivet, so that the mounting quality of the mounting component by the screw rod can be greatly improved, In the case where the panel or the bracket is made of two or more plates, the two or more plates can be very firmly coupled by the self-piercing rivet, thereby further improving the mounting quality of the mounting parts.

1 is a cross-sectional view illustrating a fastener using self-piercing according to an embodiment of the present invention.
2 is a view showing a state where a fastener using self-piercing according to the present invention is coupled to a panel or a bracket of a vehicle.
FIG. 3 is a process diagram illustrating a process of installing a fastener using self-piercing according to the present invention.
4 is a view illustrating a fastener using self-piercing according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. For the sake of convenience, the size, line thickness, and the like of the components shown in the drawings referenced in the description of the present invention may be exaggerated somewhat. The terms used in the description of the present invention are defined in consideration of the functions of the present invention, and thus may be changed depending on the user, the intention of the operator, customs, and the like. Therefore, the definition of this term should be based on the contents of this specification as a whole.

1 and 2 are views showing a fastener using self-piercing according to an embodiment of the present invention.

The fastening tool 10 using the self-piercing according to the present invention includes a self-piercing rivet 11 and a threaded rod 15 integrally formed with the self-piercing rivet 11. The self-

The self-piercing rivet 11 has a head portion 12 and a shank portion 13 extending downward from the head portion 12.

The head portion 12 serves as a base for supporting the shank portion 13 and the screw bar 15 and the upper surface of the head portion 12 is formed as a whole flat.

The shank portion 13 extends downward from the head portion 12, and the shank portion 13 has a cylindrical structure in which a hollow portion is formed. 2, when the external force is applied downward from the head portion 12, the shank portion 13 is deformed and spreads in the outer diameter direction.

A piercing edge 14 is formed at the lower end of the shank portion 13 and the piercing edge 14 is formed to be sharp so as to facilitate piercing the mounting portion.

This self-piercing rivet 11 is very tightly coupled to various mounting points (such as a panel or bracket) in the vehicle by self-piercing action (perforation of the piercing edge 14 and outward spreading of the shank portion 13, etc.) .

The threaded rod 15 extends vertically upward from the head portion 12 of the self-piercing rivet 11 and has threaded portions 15 on the outer circumferential surface of the threaded rod 15, 15a are formed.

Particularly, in the case where the self-piercing rivet 11 is mounted on a mounting point where two or more plates 5, 6 are superimposed, the shank portion 13 of the self-piercing rivet 11, as shown in Fig. 2, So that the two or more plates 5 and 6 are clamped very firmly so that the bonding force of the mounting portion can be realized to a degree corresponding to the bonding force by high quality welding. 2, when the external force acts vertically downward through the head portion 12, the shank portion 13 penetrates a part of the upper plate 5 and the lower plate 6 by the piercing edge 14 The shank portion 13 and the piercing edge 14 are clamped on the upper plate 5 and the lower plate 6 so that the upper plate 5 and the lower plate 6 are very close to each other Can be firmly coupled.

2, the self-piercing rivet 11 clamps the upper and lower plates 5 and 6 downward by its self-piercing action, thereby clamping the upper surface of the head part 12 to the upper plate 5, As shown in FIG. In other words, when the self-piercing rivet 11 is engaged with the mounting portion, the top surface of the head portion 12 can be configured to be positioned coplanar with the top surface of the mounting portion. As the upper surface of the head portion 12 is located on the same plane as the upper surface of the mounting portion, the mounting component 7 can be mounted more stably on the threaded portion 15a of the screw rod 15. [

As described above, since the fastener 10 of the present invention is coupled to the mounting point by the self-piercing action of the self-piercing rivet 11, it does not adopt a welding method such as a stud bolt or a welded bolt of the prior art, Soot, watertightness, noise and vibration problems can be surely prevented.

A process of coupling the fastener 10 according to the present invention to a mounting position where two or more plates 5 and 6 are overlapped will be described in detail with reference to FIG.

As shown in Fig. 3 (a), the sleeve 21 and the die 22 are positioned on a portion where the fastener 10 is to be engaged. At this time, the sleeve 21 is positioned on the upper surface of the upper plate 5, and the die 22 is positioned on the lower surface of the lower plate 6.

3 (b), the fastener 10 is inserted through the sleeve 21 while the fastener 10 is held by the holder 23.

3 (c), the piercing edge 14 of the fastener 10 is passed through a part of the plates 5 by pressing or twisting the fastener 10 toward the plates 5, 6 (piercing).

3 (d), when the piercing edge 14 of the fastener 10 partially penetrates the plates 5 and 6, the fastener 10 is stamped downward, The shank portion 13 is deformed and is expanded in the outer diameter direction (stamping).

3 (e), the self-piercing rivet 12 of the fastener 10 clamps the plates 5, 6 while the bottom surface of the plate 6 is moved downward So that a protrusion is formed on the bottom surface of the lower plate 6 by being supported in the forming groove 22a of the die 22. [

Finally, by pushing the die 22 upward as shown in FIG. 3 (f), the lower protrusions of the plates 5 and 6 are set to a proper shape.

An example of the installation condition of the self-piercing rivet 11 will be described below. The self-piercing rivet 11 can be easily applied when the seating surface of the self-piercing rivet 11 is 25 mm or more and the plates 5 and 6 are steel materials of 800 MPa or less. It should be at least 2mm longer than the total thickness. The higher the strength and the greater the thickness of the lower plate 6 is, the more favorable the quality is ensured. The shape of the self-piercing rivet 11 and the die 22 can be variously shaped through an analytical approach based on a basic experiment .

4 is a view illustrating a fastener using self-piercing according to another embodiment of the present invention.

4 (a), the fastener 10 according to the present invention further includes a nut member 16 detachably coupled to the threaded portion 15a of the threaded rod 15. As shown in Fig.

The nut member 16 has a cylindrical structure in which a hollow portion is formed. The nut member 16 has a length corresponding to the length of the threaded rod 15 and an inner diameter corresponding to the outer diameter of the threaded rod 15.

The inner thread portion 16a of the nut member 16 is screwed to the thread portion 15a of the threaded rod 15 and the inner thread portion 16a of the nut member 16 And an outer threaded portion 16b is formed on the outer peripheral surface.

As the nut member 16 is coupled to the outer circumferential surface of the screw rod 15, the outer diameter of the screw rod 15 can be expanded.

On the other hand, it is preferable that the inner thread portion 16a and the outer thread portion 16b have opposite helical directions. The inner threaded portion 16a of the nut member 16 is engaged with the threaded portion 15a of the screw rod 15 and the mounting direction of the mounting component 7 mounted on the outer threaded portion 16b of the nut member 16 And the mounting of the mounting part 7 is not affected by the coupling of the nut member 16 through this.

According to one embodiment, the threaded portion 15a of the threaded rod 15 and the inner threaded portion 16a of the nut member 16 have a leftward helical structure and the outer threaded portion 16b of the nuted member 16 has a right- Directional helical structure.

According to another embodiment, the threaded portion 15a of the threaded rod 15 and the inner threaded portion 16a of the nut member 16 have a rightward helical structure and the outer threaded portion 16b of the nuted member 16 has a left- Directional helical structure.

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, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

5: upper plate 6: lower plate
7: Mounting part 10: Fastener
11: Self-Pierced Rivet 12: Head part
13: shank 14: piercing edge
15: thread rod 15a: threaded portion
16: nut member 16a: inner thread portion
16b: outer threaded portion

Claims (9)

A self-piercing rivet having a head portion and a shank portion extending downwardly from the head portion; And
And a screw rod extending upward from the head portion of the self-piercing rivet and having a threaded portion formed on an outer circumferential surface thereof,
Wherein the shank portion is deformable in an outer diameter direction and a piercing edge is formed at a lower end of the shank portion. The method according to claim 1,
Wherein a nut member is detachably coupled to a threaded portion of the screw rod, the nut member has a cylindrical structure with a hollow portion formed therein, and an outer threaded portion is formed on an outer circumferential surface of the nut member. phrase. The method of claim 2,
Wherein an inner threaded portion is formed on an inner circumferential surface of the nut member, and the inner threaded portion is removably screwed to a threaded portion of the threaded rod. The method of claim 3,
Wherein the inner threaded portion and the outer threaded portion have opposite helical directions. The method of claim 4,
Wherein the threaded portion of the screw rod and the inner threaded portion of the nut member have a leftward helical structure and the outer threaded portion of the nut member has a rightward helical structure. The method of claim 4,
Wherein the threaded portion of the screw rod and the inner threaded portion of the nut member have a rightward helical structure and the outer threaded portion of the nut member has a leftward helical structure. The method according to claim 1,
Wherein the head portion of the self-piercing rivet is located in the same plane as the top surface of the portion to which the self-piercing rivet is coupled. A self-piercing rivet coupled by self-piercing action to a predetermined mounting point; And
And a screw rod extending upward from the self-piercing rivet and having a threaded portion formed on an outer circumferential surface thereof. The method of claim 8,
Wherein the mounting portion is a portion where two or more plates are overlapped, and the self-piercing rivet is engaged while clamping two or more plates.
KR1020150034824A 2015-03-13 2015-03-13 Fastener using self-piercing KR20160109776A (en)

Priority Applications (1)

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KR1020150034824A KR20160109776A (en) 2015-03-13 2015-03-13 Fastener using self-piercing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150034824A KR20160109776A (en) 2015-03-13 2015-03-13 Fastener using self-piercing

Publications (1)

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KR20160109776A true KR20160109776A (en) 2016-09-21

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Country Link
KR (1) KR20160109776A (en)

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