KR20090005731A - High strength blind rivet - Google Patents

High strength blind rivet Download PDF

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Publication number
KR20090005731A
KR20090005731A KR1020070069010A KR20070069010A KR20090005731A KR 20090005731 A KR20090005731 A KR 20090005731A KR 1020070069010 A KR1020070069010 A KR 1020070069010A KR 20070069010 A KR20070069010 A KR 20070069010A KR 20090005731 A KR20090005731 A KR 20090005731A
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KR
South Korea
Prior art keywords
stem
rivet
hole
rivet body
high strength
Prior art date
Application number
KR1020070069010A
Other languages
Korean (ko)
Inventor
도재복
정준영
Original Assignee
도재복
정준영
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 도재복, 정준영 filed Critical 도재복
Priority to KR1020070069010A priority Critical patent/KR20090005731A/en
Publication of KR20090005731A publication Critical patent/KR20090005731A/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
    • F16B19/10—Hollow rivets; Multi-part rivets fastened by expanding mechanically
    • F16B19/1027—Multi-part rivets
    • F16B19/1036—Blind rivets

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

Abstract

A high strength blind rivet is provided to prevent the stem from separating the rivet body by forming a separation prevention part between the rivet body and the stem. A high strength blind rivet comprises a rivet(10) in which a flange part(12) is formed in one end of a rivet body(11) having a through hole(11a) formed in the axial direction, and a stem(20) including a stem body(21) which is extended in the longitudinal direction in order to be inserted into the through hole of the rivet body, a head unit(22) formed on the part of the stem body, and a cutaway(23) formed in the stem body in order to be torn by the external force. The through hole of the rivet body has a contraction part(11b) where the diameter is reduced, and the stem body has a stepped part(21a) corresponding to the contraction part.

Description

High strength blind rivet

The present invention relates to a high-strength blind rivet, and more particularly to the stepped portion formed in the through hole of the stem body in order to improve the durability by the fracture of the stem to match the flange portion of the rivet body, the stepped portion The locking jaw portion is formed to be caught, but it relates to a high-strength blind rivet to make the distance of the break from the locking jaw portion equal.

In general, a rivet joint is a permanent fastening element that overlaps and fixes two or more plates or section steels by using rivets, and is a bridge because of its simple structure, high productivity, and high ability to transfer the force acting between the members. It is widely used in steel structures, ships, etc. It is also widely used in pressure vessels and boilers that require airtightness due to its high clamping force.

Among the rivets used in the rivet joint, there are blind rivets that can easily connect two overlapping plates and at the same time have a strong fastening force.

1 is a view showing a state before being coupled to the base material as an example of the conventional blind rivets.

2 is a view showing a state after being bonded to the base material as an example of the conventional blind rivets.

As shown in the related art, the conventional blind rivet includes a rivet 1 having a flange portion 1b formed at one end of the rivet body 1a in which the through holes 1a-1 are formed along the axial direction, and the rivet body 1a. The stem body (2a) extending in the longitudinal direction to be inserted into the through hole (1a-1) of the) is formed, the head portion (2b) is formed at one end of the stem body (2a), so as to be broken by external force The stem body 2a is formed of a stem 2 in which a fracture portion 2c is formed.

The blind rivet configured as described above uses a special tool on the flange portion 1b of the rivet body 1a with the stem body 2a in a state where the blind rivet is coupled to the coupling hole 3a formed in the pair of base materials 3. When pulled out to press the rivet body (1a) is in contact with the head portion (2b) of the stem (2), due to which the rivet body (1a) causes plastic deformation, the coupling hole (3a) of the base material (3) Larger radially expansion.

If you continue to apply a greater force to the stem (2) and pull it, the breaking portion (2c) of the stem (2) breaks apart.

However, in the blind rivet as described above, the fracture portion 2c of the stem 2 is positioned inside the through hole 1a-1 of the rivet body 1a, and is perpendicular to the shaft at both end portions of the pair of base materials 3. If a load is applied in the direction, there is a problem that the rivet body (1a) is broken.

That is, the stem 2 is not filled in the through hole 1a-1 of the rivet body 1a, and a hollow portion 1a-2 is formed in a part of the rivet body 1a. It is broken.

In addition, the stem 2 inserted into the through-hole 1a-1 of the rivet body 1a is not provided with an anti-separation portion so that an external force is applied in the axial direction of the stem 2, or the stem 2 is caused by vibration or the like. There is a problem to be separated from the rivet body (1a).

The present invention has been made to solve such a conventional problem, the object of which is to form a stepped portion in the through hole of the stem body to improve the durability by causing the fracture of the stem to match the flange portion of the rivet body, It is to provide a high-strength blind rivet to form a locking jaw portion to be caught in the stepped portion, so that the distance of the break from the locking jaw portion is made equal.

In addition, another object of the present invention is to provide a high-strength blind rivet to form a separation prevention portion between the rivet body and the stem in order to prevent the stem from being separated from the rivet body.

The present invention for achieving this object is a rivet formed with a flange portion at one end of the rivet body is formed through holes along the axial direction, the stem body extending in the longitudinal direction to be inserted into the through hole of the rivet body is formed, the stem In the blind rivet consisting of a stem formed by the head portion is formed at one end of the body, the stem is formed in the stem body so that it is broken by an external force, the stepped portion is reduced in the through hole of the rivet body on the flange portion side The stud body has a locking jaw portion corresponding to the stepped portion, wherein the distance from the locking jaw portion to the breaking portion is the distance from the stepped portion of the rivet body to the end portion of the flange portion, and the stem is attached to a special tool. When the pulley is pulled by the hooking portion, the catching portion is hooked to the stepped portion, and the breaking portion is the As the value is to be broken.

In addition, the head portion of the stem body to which the rivet body and the stem body is coupled is formed to prevent the stem from being separated from the rivet body.

In addition, the release preventing portion, a plurality of threads are formed concentrically on the stem body, the through hole of the rivet body is formed with a coupling groove coupled to the thread.

The high-strength blind rivet according to the present invention as described above in detail, forming a stepped portion on the through-hole of the stem body, and forming a latching jaw to be caught on the stepped portion, by making the distance of the break from the locking jaw equal, The fracture portion of the rivet body can be broken to match the flange portion of the body can be improved durability.

In addition, the high-strength blind rivet according to the present invention, by forming a separation prevention portion between the rivet body and the stem, it is possible to prevent the stem from being separated from the rivet body.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 to 6 is a view showing a high-strength blind rivet according to the present invention.

As shown, the high-strength blind rivet of the present invention includes a rivet 10 having a flange portion 12 formed at one end of the rivet body 11 in which a through hole 11a is formed along an axial direction, and the rivet body 11. Stem body 21 extending in the longitudinal direction to be inserted into the through hole (11a) of the) is formed, the head portion 22 is formed at one end of the stem body 21, the stem to be broken by an external force It consists of a stem 20 in which a break 23 is formed in the body 21.

In addition, a stepped portion 11b having a diameter reduced in the through hole 11a of the rivet body 11 is formed on the flange portion 12 side, and the stepped body 11 is formed in the stepped portion 11b. A corresponding locking jaw portion 21a is formed, and the distance from the locking jaw portion 21a to the breaking portion 23 is the distance from the stepped portion 11b of the rivet body 11 to the end of the flange portion 12. to be.

That is, when the stem 20 is pulled by a special tool, the catching jaw 21a is caught by the stepped portion 11b and the break 23 is matched with the flange 12 so as to break. It is.

In addition, the rivet body 11 is expanded larger than the coupling hole 41 formed in the base material 40 in the radial direction, the size is expanded as shown in Figure 5 and 6 depending on the thickness of the base material. .

In addition, the head portion 22 side of the stem body 21 to which the rivet body 11 and the stem body 21 are coupled to prevent the stem 20 from being separated from the rivet body 11. 30 is formed, the separation prevention portion 30, a plurality of threads 31 are formed concentrically on the stem body 21, the through hole (11a) of the rivet body (11) Coupling groove 32 is coupled to the thread 31 is formed.

That is, in the related art, there is a problem that the stem 20 is separated from the rivet body 11 because the departure preventing part 30 is not formed, but the departure preventing part 30 has the stem 20 and the rivet body ( 11 is formed so that the stem 20 is not separated to the outside due to vibration.

On the other hand, the departure prevention part 30 of the present invention is not limited to this but only one embodiment, it may be carried out in various changes.

The high strength blind rivet of the present invention configured as described above, the flange portion of the rivet body 11 to the stem body 21 in a state where the high strength blind rivet 100 is coupled to the coupling hole 41 formed in the pair of base materials 40 Pulling by using a special tool from the (12) side while the locking jaw portion 21a of the stem body 21 is caught by the stepped portion 11b formed on the through hole 11a of the rivet body 11, the stem 20 Press the rivet body 11 is in contact with the head portion 22 of the), thereby causing the rivet body 11 to cause plastic deformation to expand in the radial direction larger than the coupling hole 41 of the base material 40 do.

When the force is applied to the stem 20 and pulled on, the breaking portion 23 of the stem 20 is broken, and the breaking portion 23 at the stepped portion 11b of the stem body 21 is pulled out. The distance to the distance from the stepped portion 11b of the rivet body 11 to the end of the flange portion 12, so that the fracture portion of the stem 20 at the end of the flange portion 12 of the rivet body 11 ( 23) is positioned so that the hollow portion is not formed in the through hole 11a of the rivet body 11 as in the prior art, so that durability is improved by shear force.

Although the present invention has been described with reference to one embodiment shown in the accompanying drawings, it will be understood that various modifications and other embodiments are possible to those skilled in the art.

1 is a view showing a state before being coupled to the base material as an example of the conventional blind rivets.

2 is a view showing a state after being bonded to the base material as an example of the conventional blind rivets.

3 is a perspective view of a high strength blind rivet according to the present invention.

4 is a view showing a state before the high-strength blind rivet according to the present invention is bonded to the base material.

5 is a view showing a state after the high-strength blind rivet according to the present invention is bonded to the base material.

6 is a view showing a state after the high-strength blind rivet according to the present invention is bonded to the base material, showing a case where the expansion portion of the rivet body when the thickness of the base material is different.

(Explanation of symbols for the main parts of the drawing)

100: high strength blind rivet 10: rivet

11: rivet body 11a: through hole

11b: stepped portion 12: flange portion

20: stem 21: stem body

21a: engaging jaw portion 22: head portion

23: Breaking part 30: Breakaway prevention part

31: thread 32: coupling groove

Claims (3)

A rivet 10 having a flange portion 12 formed at one end of the rivet body 11 having a through hole 11 a formed along the axial direction thereof, and a longitudinal direction to be inserted into the through hole 11 a of the rivet body 11. Stem body 21 is formed to extend, the head portion 22 is formed at one end of the stem body 21, the break portion 23 is formed in the stem body 21 to be broken by an external force In the blind rivet consisting of the stem 20, A stepped portion 11b having a diameter reduced in the through hole 11a of the rivet body 11 is formed on the flange portion 12 side, The stud body 21 is provided with a locking jaw portion 21a corresponding to the stepped portion 11b, but the distance from the locking jaw portion 21a to the breaking portion 23 is the stepped portion of the rivet body 11. The distance from 11b to the end of the flange portion 12, When the stem 20 is pulled by a special tool, the locking jaw portion 21a is caught by the stepped portion 11b and the fracture portion 23 is fractured while coinciding with the flange portion 12. High strength blind rivets. The method of claim 1, On the head 22 side of the stem body 21 to which the rivet body 11 and the stem body 21 are coupled, the stem 20 is prevented from being separated from the rivet body 11. High strength blind rivet, characterized in that is formed. The method of claim 2, The detachment preventing part 30 has a plurality of threads 31 formed concentrically on the stem body 21, and coupled to the threads 31 in the through-hole 11a of the rivet body 11. High strength blind rivet, characterized in that the coupling groove 32 is formed.
KR1020070069010A 2007-07-10 2007-07-10 High strength blind rivet KR20090005731A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070069010A KR20090005731A (en) 2007-07-10 2007-07-10 High strength blind rivet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070069010A KR20090005731A (en) 2007-07-10 2007-07-10 High strength blind rivet

Publications (1)

Publication Number Publication Date
KR20090005731A true KR20090005731A (en) 2009-01-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070069010A KR20090005731A (en) 2007-07-10 2007-07-10 High strength blind rivet

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KR (1) KR20090005731A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104533912A (en) * 2014-11-17 2015-04-22 常州市金海基机械制造有限公司 Half-round head rivet
KR20150126533A (en) * 2014-05-02 2015-11-12 엘지전자 주식회사 Compressor and scroll compressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150126533A (en) * 2014-05-02 2015-11-12 엘지전자 주식회사 Compressor and scroll compressor
CN104533912A (en) * 2014-11-17 2015-04-22 常州市金海基机械制造有限公司 Half-round head rivet

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