KR20160036337A

KR20160036337A - Rivet nut unit

Info

Publication number: KR20160036337A
Application number: KR1020140128439A
Authority: KR
Inventors: 황석환; 이문용
Original assignee: 주식회사 성우하이텍
Priority date: 2014-09-25
Filing date: 2014-09-25
Publication date: 2016-04-04

Abstract

Disclosed is a rivet nut unit. According to an embodiment of the present invention, the rivet nut unit is riveted to at least one plate material to adhere the plate materials to each other, and is coupled to a bolt. The rivet nut unit comprises: a head unit supported with one side in contact with one side of the plate material in a position corresponding to a hole processed to the plate material, and formed with a penetration hole in a center corresponding to the hole; and an insertion unit inserted in the hole by being extended and integrally formed from one side of the head unit, and formed with at least one slot wherein an end unit inserted in the hole and protruded is bent to an other side of the plate material during the riveting to couple the head unit to the plate material. The rivet nut unit of the present invention is capable of reducing an operation process, and improves a working property and productivity by reducing a cycle time.

Description

A rivet nut unit (RIVET NUT UNIT)

The present invention relates to a rivet nut unit, more particularly, to a rivet nut unit which is joined to at least one plate member and integrates the functions of a nut to reduce a work process and a cycle time and to improve a fastening force with a plate material will be.

In general, the mechanical fastening of various body panels made of different materials in a vehicle makes the connection with other parts accurate and robust by using weld nuts and bolts.

Such a mechanical fastening method has a disadvantage in that the welding process in which the weld nut is positioned on the basis of the holes formed on one side of the single piece panel which can be welded, and then welding is performed using a projection welding machine or the like.

In addition, since the welded nuts welded through the projection welding are limited to the steel material, it is necessary to connect the nuts in one or two overlapping steel plates having the steel material to energize the nuts. However, Value, and pressing force becomes difficult.

In recent years, non-ferrous metal materials such as aluminum have been applied in accordance with the trend of weight reduction of the vehicle body. Since there is a part to be applied only to the aluminum as the material of the body of the vehicle and a part to which aluminum and steel are applied simultaneously, It is difficult to mount the weld nut through the projection welding to the plate material, and a separate nut mounting method is required.

In order to solve the disadvantages of the weld nut, a rivet joint or a screw fastening method is applied by a mechanical fastening method. However, in order to keep the fastening force by the weld nut and the bolt, So that a large number of rub-out points or screw fastening portions must be formed unnecessarily.

The matters described in the background section are intended to enhance the understanding of the background of the invention and may include matters not previously known to those skilled in the art.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to solve at least the above problems in the prior art. To improve workability and productivity, and to increase the fastening force of laminated heterogeneous plate materials.

In order to achieve the above object, a rivet nut unit according to an embodiment of the present invention is a rivet nut unit in which a bolt is fastened while riveting the plate members by being riveted to at least one plate member, And a through hole is formed in the center of the head portion corresponding to the hole. And an end portion integrally formed from the one surface of the head portion and inserted into the hole, the end portion being inserted and protruded into the hole to be bent to the other surface of the plate member during riveting to couple the head portion to the plate member, And an insertion portion formed therein.

The insertion portion may be formed in a hollow cylindrical shape corresponding to the through hole.

The slot may be formed to extend from one end of the insertion portion toward the other end connected to the head portion, and may be formed at a position spaced apart from the outer circumference of the insertion portion by a predetermined angle.

The slots may be spaced at an angle of 120 degrees along the circumference of the insert.

The head part may be integrally formed with at least one support part on one surface corresponding to one surface of the plate member.

The support portion includes a plurality of first support protrusions formed radially from an outer peripheral surface of the insertion portion toward an outer peripheral surface of the head portion; And a plurality of second support protrusions formed along the periphery of the head portion between the respective first support protrusions.

The first support protrusions may be formed on one surface of the head portion so as to be spaced apart at an angle of 60 degrees along the circumferential direction.

The second support protrusions may be circularly rounded from the outer circumferential surface of the head portion toward the insertion portion, and may be formed at an angle of 60 degrees along the circumferential direction of the head portion.

The support portion may further include third support protrusions formed by interconnecting one side of the head portion and one side of the outer circumferential surface of the insertion portion in correspondence with the respective second support protrusions.

The third support protrusion may be formed in a triangular shape formed downward from the one surface of the head portion toward the outer peripheral surface of the support portion.

The support portion may further include a third support protrusion formed by interconnecting each of the first support protrusions between each of the second support protrusions and the insertion portion.

The third support protrusion may be formed in a circular ring shape protruding from one surface of the head portion.

The support portion includes a third support protrusion formed by interconnecting each of the first support protrusions between each of the second support protrusions and the insertion portion; And a fourth support protrusion formed by mutually connecting one side of the head portion and one side of the outer circumferential surface of the insertion portion at positions corresponding to the respective second support protrusions.

The fourth support protrusion may be formed in a triangular shape that is inclined downward from the one surface of the head portion toward the outer circumferential surface of the support portion.

The support portion includes a plurality of first support protrusions formed to be inclined in a spiral direction from an outer peripheral surface of the insertion portion toward an outer peripheral surface of the head portion; And a plurality of second support protrusions formed along the periphery of the head portion and connected to the other end of each of the first support protrusions, one end of which is connected to one side of the outer circumferential surface of the support portion.

The plate members may be arranged in a state that two plate members formed of different materials are overlapped with each other.

As described above, according to the rivet nut unit according to the embodiment of the present invention, by joining at least one plate member and integrating the functions of the nut, the work process can be reduced and the cycle time can be reduced to improve workability and productivity It is effective.

Further, by joining the plate members together and increasing the fastening force with the plate member in a state in which the plate members made of different materials are stacked and overlapped, the joint rigidity of each plate member is improved, There is also an effect that can be concluded.

Further, by forming respective support portions having various shapes formed on the lower surface of the head portion contacting the plate member, there is also an effect of improving the tightening torque of the rivet nut unit coupled through each plate member.

In addition, since a slot is formed in the insertion portion inserted through the plate member, and a portion of the plate material corresponding to the slots is introduced, thereby forming a mechanical interlock interconnected with the insertion portion, the plate material is constrained There is also an effect.

In addition, the inserting portion exhibits a sufficient resistance force with respect to the rotating direction of the plate member, and the rivet nut unit can be prevented from rotating at the time of bolt fastening by restraining the plate member with a predetermined strength through the inserting portion, There is also an effect of further increasing the strength and bonding strength.

FIG. 1 is a cross-sectional view illustrating a rivet nut unit according to an embodiment of the present invention applied to a single plate.
FIG. 2 is a cross-sectional view illustrating a rivet nut unit according to an embodiment of the present invention applied to two sheet members.
3 is a perspective view of a rivet nut unit according to a first embodiment of the present invention.
4 is a rear view of the rivet nut unit according to the first embodiment of the present invention.
5 is a perspective view of a rivet nut unit according to a second embodiment of the present invention.
6 is a rear view of a rivet nut unit according to a second embodiment of the present invention.
7 is a perspective view of a rivet nut unit according to a third embodiment of the present invention.
8 is a rear view of a rivet nut unit according to a third embodiment of the present invention.
9 is a perspective view of a rivet nut unit according to a fourth embodiment of the present invention.
10 is a rear view of a rivet nut unit according to a fourth embodiment of the present invention.
11 is a perspective view of a rivet nut unit according to a fifth embodiment of the present invention.
12 is a rear view of a rivet nut unit according to a fifth embodiment of the present invention.

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

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory only and are not restrictive of the invention, It should be understood that various equivalents and modifications may be present.

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.

And 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.

FIG. 1 is a cross-sectional view showing a state where a rivet nut unit according to an embodiment of the present invention is applied to one sheet material, and FIG. 2 is a sectional view showing a state where a rivet nut unit according to an embodiment of the present invention is applied to two sheets of sheet material.

Referring to the drawings, a rivet nut unit 100 according to an embodiment of the present invention joins at least one plate material P1 and P2 and integrates the functions of a nut, thereby reducing a work process and reducing a cycle time Workability and productivity are improved and the fastening force of the laminated heterogeneous plate material is increased.

1 and 2, a rivet nut unit 100 according to an embodiment of the present invention includes a plate member P1 or a pair of plate members P1 and P2 which are overlapped with each other And is joined to one plate P1 or two plates P1 and P2 are joined to each other and the bolts are fastened to rivets H which are machined to the plates P1 and P2.

Here, the plate materials P1 and P2 may include a metal sheet material such as an aluminum sheet or a steel sheet (including a high-strength steel sheet), or may include a non-metallic material such as a composite material, plastic, and rubber.

Each of the plate materials P1 and P2 may include the same plate material of the same kind. In this embodiment, the plate material P1 made of different materials and made of different materials and the plate material P2 made of steel material And the positions of the plate materials P1 and P2 can be changed by mutually changing positions.

That is, the plate material P1 formed of an aluminum material may be overlapped with the plate material P2 formed of a steel material in a state that the plate material P1 is disposed on the upper side. On the contrary, And may be disposed so as to overlap with the plate material P1 formed of an aluminum material.

In this embodiment, the description will be made on the basis that the plate material P1 formed of an aluminum material is disposed on the upper side and the plate material P2 formed of a steel material is disposed on the lower side.

1 and 2 are referred to as a reference when the rivet nut unit 100 is set upright in the up and down direction, the following components will be described. The downward-facing portion is defined as one surface, It can be defined as a surface facing toward the image side.

In the case of the plate materials P1 and P2, the upper surface may be defined as one surface or the upper surface, and the lower surface may be defined as a surface or a lower surface.

First, a rivet nut unit 100 according to a first embodiment of the present invention will be described with reference to FIGS. 3 and 4. FIG.

FIG. 3 is a perspective view of a rivet nut unit according to a first embodiment of the present invention, and FIG. 4 is a rear view of a rivet nut unit according to the first embodiment of the present invention.

3, the rivet nut unit 100 according to the first embodiment of the present invention includes a head part 110 and an inserting part 120. As shown in FIG.

First, the head 110 is supported on one side of the plate P1 or one side of the plate P1 disposed on the upper side at a position corresponding to the holes H machined to the plates P1 and P2 , And a through hole (111) is formed at the center corresponding to the hole (H).

The head portion 110 may have a predetermined thickness and may have a polygonal shape including a circular shape depending on the tool. In this embodiment, the head portion 110 is formed in a circular shape, and a thread N for bolt fastening is formed on the inner peripheral surface of the through hole 111, Can be formed.

The insertion portion 120 extends integrally from one side of the head portion 110 and is inserted into the hole H and an end portion of the insertion portion 120 inserted into the hole H protrudes, P1 or P2 so that the head part 110 is coupled to the plate materials P1 and P2 and at least one slot 121 is formed.

Here, the insertion portion 120 may have a hollow cylindrical shape corresponding to the through-hole 111.

The slot 121 is formed to extend from one end of the insertion portion 120 toward the other end connected to the head portion 110 and is inserted into the insertion portion 120 at a predetermined angle And can be formed at a spaced apart position.

Three of the slots 121 may be spaced apart at an angle of 120 from the outer circumference of the insert 120.

Accordingly, when the plate members P1 and P2 are riveted, the insertion portion 120 can be smoothly bent at an angle of 120 degrees toward the outside with respect to the center of the insertion portion 120 by the respective slots 121 have.

In the slot 121, the plate materials P1 and P2 are plastically deformed when the rivet nut unit 100 is riveted, and the plate materials P1 and P2 are inserted into the slots 121, The bonding force can be increased.

That is, when the slot 121 is riveted, the end of the insertion part 120 is smoothly bent and a part of the plate materials P1 and P2 corresponding to the slots 121 is introduced, , The plate material is restrained to a predetermined strength through the insertion portion 120. [0051] As shown in FIG.

At least one support portion 113 may be integrally formed on one surface of the head portion 110 corresponding to one surface of the plate P1.

In the first embodiment of the present invention, the support portion 130 includes a first support protrusion 131 and a second support protrusion 133, as shown in FIG.

First, the first support protrusions 131 are formed in a plurality of radial directions from the outer circumferential surface of the insertion portion 120 toward the outer circumferential surface of the head portion 110.

The first support protrusions 131 may be formed on the lower surface of the head portion 110 facing the upper surface of the plate P1 and spaced apart at an angle of 60 degrees along the circumferential direction.

The second support protrusions 133 are formed in a plurality of sections and are formed along the periphery of the head section 110 between the first support protrusions 131.

The second support protrusions 133 are circularly rounded from the outer circumferential surface of the head portion 130 to the insertion portion 120 and are spaced at an angle of 60 degrees along the circumferential direction of the head portion 110 Six can be formed.

That is, each of the first support protrusions 131 and each second support protrusion 133 configured as described above is mounted on one side of the upper side of the plate material P1 disposed on the upper side when the rivet nut unit 100 is riveted. The fastening torque of the head part 110 is increased by pressing so that the head part 110 is fixed by using a separate tool or when the bolt is fastened to the through hole 111 of the head part 110, Thereby preventing the rivet nut unit 100 from being rotated on the hole H. [

A rivet nut unit 200 according to a second embodiment of the present invention will be described with reference to FIGS. 5 and 6.

FIG. 5 is a perspective view of a rivet nut unit according to a second embodiment of the present invention, and FIG. 6 is a rear view of a rivet nut unit according to a second embodiment of the present invention.

Referring to the drawings, the rivet nut unit 200 according to the second embodiment of the present invention reduces the number of work processes by joining the at least one plate material P1 and P2 and integrating the functions of the nut, To improve workability and productivity, and to increase the fastening force of the laminated heterogeneous plate material, and includes a head part 210 and an insertion part 220.

Here, the head portion 210 and the support portion 220 are configured in the same manner as the first embodiment described above, and a detailed description thereof will be omitted.

In the rivet nut unit 200 according to the second embodiment of the present invention, the support portion 230 includes the same first support protrusions 231 and second support protrusions 233 as those of the first embodiment described above, And a plurality of third support protrusions 235 that are formed by mutually connecting one side of the lower surface of the head portion 210 and one side of the outer circumferential surface of the insertion portion 220 corresponding to the second support protrusions 233 .

The third support protrusions 235 may be formed in a triangular shape inclined downward from the lower surface of the head 210 toward the outer circumferential surface of the support 220.

Accordingly, the rivet nut unit 200 according to the second embodiment of the present invention presses the upper surface of the plate P1 through the first, second, and third support protrusions 231, 233, and 235, The tightening torque of the head portion 210 can be further increased.

The rivet nut unit 200 according to the second embodiment can be manufactured by fixing the head part 210 using a separate tool or by inserting a bolt into the through hole 211 of the head part 210, It is possible to prevent the nut unit 200 from being rotated on the hole H. [

The rivet nut unit 300 according to the third embodiment of the present invention includes the head portion 310 and the insertion portion 320 having the slot 321 formed thereon as in the first and second embodiments The configurations are all the same and differ only in the configuration of the support portion 330, and the difference will be described with reference to FIGS. 7 and 8 attached hereto.

FIG. 7 is a perspective view of a rivet nut unit according to a third embodiment of the present invention, and FIG. 8 is a rear view of a rivet nut unit according to a third embodiment of the present invention.

7 and 8, a rivet nut unit 300 according to a third embodiment of the present invention is composed of a head part 310 and an insertion part 320. This is the same as the first and second embodiments The detailed description of the configuration will be omitted.

That is, in the rivet nut unit 300 according to the third embodiment of the present invention, the support part 330, which is formed on one lower surface of the head part 310 corresponding to the upper surface of the plate P1, Second, and third support protrusions 331, 333, and 335, respectively.

First, the first support protrusions 331 are formed in a plurality of radial directions from the outer circumferential surface of the insertion portion 320 toward the outer circumferential surface of the head portion 310.

Here, the first support protrusions 331 may be formed on the lower surface of the head part 310 facing the upper surface of the plate material P1 and spaced apart at an angle of 60 degrees along the circumferential direction.

The second support protrusions 333 are formed in a plurality of portions and are formed along the periphery of the head portion 310 between the first support protrusions 131.

The second support protrusions 333 are circularly rounded from the outer circumferential surface of the head portion 310 to the insertion portion 320 and are spaced at an angle of 60 degrees along the circumferential direction of the head portion 310 Six can be formed.

The third support protrusions 335 may be formed by mutually connecting the first support protrusions 331 between the second support protrusions 333 and the inserting portion 320.

The third support protrusion 335 may be formed in a circular ring shape protruding from one surface of the head portion 310.

The rivet nut unit 300 according to the third embodiment of the present invention has the upper surface of the plate P1 through the first, second, and third support protrusions 331, 333, and 335 The tightening torque of the head part 310 can be further increased.

The rivet nut unit 300 according to the third embodiment can be manufactured by fixing the head part 310 using a separate tool or by inserting the rivet part 310 into the through hole 311 of the head part 310, It is possible to prevent the nut unit 300 from being rotated on the hole H. [

The rivet nut unit 400 according to the fourth embodiment of the present invention includes a head portion 410 and an insertion portion 420 having a slot 421 formed therein as in the first, second, Are different from each other only in the constitution of the supporting part 430, and the difference will be explained with reference to FIG. 9 and FIG. 10 attached hereto.

FIG. 9 is a perspective view of a rivet nut unit according to a fourth embodiment of the present invention, and FIG. 10 is a rear view of a rivet nut unit according to a fourth embodiment of the present invention.

9 and 10, a rivet nut unit 400 according to a fourth embodiment of the present invention includes a head part 410 and an inserting part 420, The third embodiment is configured in the same manner as the third embodiment, and a detailed description thereof will be omitted.

That is, in the rivet nut unit 400 according to the fourth embodiment of the present invention, the support portion 430, which is formed on one lower surface of the head portion 410 corresponding to the upper surface of the plate P1, Third, and fourth support protrusions 431, 433, 435, and 437. The first, second, third, and fourth support protrusions 431, 433, 435,

First, the first support protrusions 431 are formed in a plurality of radial directions from the outer circumferential surface of the inserting portion 420 toward the outer circumferential surface of the head portion 410.

The first support protrusions 431 may be formed on the lower surface of the head 410 facing the upper surface of the plate P1 and spaced apart at an angle of 60 degrees along the circumferential direction.

The second support protrusions 433 are formed of a plurality of pieces and are formed along the periphery of the head portion 410 between the first support protrusions 431.

The second support protrusions 433 are circularly rounded from the outer circumferential surface of the head portion 410 to the insertion portion 420 and are spaced at an angle of 60 ° along the circumferential direction of the head portion 410 Six can be formed.

The third support protrusions 435 may be formed by mutually connecting the first support protrusions 431 between the second support protrusions 433 and the inserting portions 420.

The third support protrusion 435 may be formed in a circular ring shape protruding from one surface of the head part 410.

The fourth support protrusions 437 are formed by interconnecting one side of the head part 410 and one side of the outer circumferential surface of the insertion part 420 at positions corresponding to the respective second support protrusions 435.

The fourth support protrusion 437 may be formed in a triangular shape inclined downward from the lower surface of the head portion 410 toward the outer peripheral surface of the support portion 420.

The rivet nut unit 400 according to the fourth embodiment of the present invention configured as described above is mounted on the plate P1 through the first, second, third, and fourth support protrusions 431, 433, 435, The fastening torque of the head portion 410 can be further increased.

In addition, the rivet nut unit 400 according to the fourth embodiment can be manufactured by fixing the head part 410 using a separate tool or by inserting the rivet part 411 into the through hole 411 of the head part 410, It is possible to prevent the nut unit 400 from being rotated on the hole H. [

The rivet nut unit 500 according to the fifth embodiment of the present invention is similar to the first, second, third and fourth embodiments described above except that the rivet nut unit 500 according to the fifth embodiment of the present invention has a head portion 510 and a slot 521 The configuration of the unit 520 is the same as that of the configuration of the support unit 530, and differences only in the configuration of the support unit 530 will be described with reference to FIGS. 11 and 12 attached hereto.

FIG. 11 is a perspective view of a rivet nut unit according to a fifth embodiment of the present invention, and FIG. 12 is a rear view of a rivet nut unit according to a fifth embodiment of the present invention.

11 and 12, a rivet nut unit 500 according to a fifth embodiment of the present invention includes a head part 510 and an inserting part 520. The rivet nut unit 500 includes a first part, a second part, 3, and the fourth embodiment. Hereinafter, the detailed description thereof will be omitted.

That is, in the rivet nut unit 500 according to the fifth embodiment of the present invention, the support portion 530 formed on the lower surface of the head portion 510 corresponding to the upper surface of the plate P1, And includes a projection 531 and a second support projection 533. [

First, the first support protrusions 531 are formed in a plurality of sections and are formed to be inclined in a spiral direction from the outer circumferential surface of the insertion section 520 to the outer circumferential surface of the head section 510.

Here, the first support protrusions 531 may be formed on the lower surface of the head part 510 at an angle of 60 degrees along the circumferential direction.

Each of the second support protrusions 533 is formed along the periphery of the head portion 510 and has a first support protrusion 531 connected to one side of the outer circumferential surface of the support portion 520, ).

The second support protrusions 533 are circularly rounded from the outer circumferential surface of the head portion 510 to the insertion portion 520 and are formed at an angle of 60 degrees along the circumferential direction of the head portion 510 6 spaced apart.

The rivet nut unit 500 according to the fifth embodiment of the present invention is configured such that the upper surface of the plate P1 is pressed through the respective first support protrusions 531 and the second support protrusions 533 The tightening torque of the head portion 510 can be further increased.

The rivet nut unit 500 according to the fifth embodiment can be manufactured by fixing the head part 510 using a separate tool or by inserting the rivet part 511 into the through hole 511 of the head part 510, It is possible to prevent the nut unit 500 from being rotated on the hole H. [

The rivet nut units 100, 200, 300, 400, and 500, which can be configured as the first to fifth embodiments, have a fixing die disposed at a lower portion of the hole H processed in the plate material P1 or P2 220, 320, 420, 520 of the rivet nut unit 100, 200, 300, 400, 500 are inserted from the upper portion of the hole H to the lower portion.

Then, when the upper die, which is slidably installed on the upper part of the head part 110, 210, 310, 410, 510 presses the head part 110, 210, 310, 410, 510 from the upper part to the lower part, The ends of the first and second plates 120, 220, 320, 420 and 520 are coupled to the plates P1 and P2 while being bent outward from the center.

Here, the fixed die may have guide grooves for guiding the insertion portions 120, 220, 320, 420, 520 to be bent outwardly.

The rivet nut units 100, 200, 300, 400, and 500 having the rivets on the plate materials P1 and P2 through the above process are connected to the head portions 110 and 210 through the supports 130, 230, The clamping torque is improved by pressing the upper surface of the plate members P1 and P2 abutting against the nut members 310, 410 and 510 of the rivet nut unit 100, 200, 300, 400 and 500, The bonding force can be improved together with the insertion portions 120, 220, 320, 420, and 520.

According to the rivet nut unit 100, 200, 300, 400 or 500 according to the embodiment of the present invention configured as described above, at least one plate material P1 or P2 is joined and the function of the nut By integrating them, the work process can be reduced and the cycle time can be reduced, so that workability and productivity can be improved.

By joining the plate materials P1 and P2 with each other and increasing the fastening force with the plate materials P1 and P2 in a state where the plate materials P1 and P2 of different materials are laminated and superimposed, The joining rigidity of the plate materials P1 and P2 can be improved and the bolts can be more smoothly fastened.

230, 330, 430, and 530 having various shapes formed on the lower surfaces of the head portions 110, 210, 310, 410, and 510 that are in contact with the plate materials P1 and P2, The tightening torques of the rivet nut units 100, 200, 300, 400, and 500 coupled through the plate members P1 and P2 can be improved.

Slots 121, 221, 321, 421, and 521 are formed in the inserting portions 120, 220, 320, 420, and 520 inserted through the plate materials P1 and P2, A part of the plate materials P1 and P2 corresponding to the insertion portions 121, 221, 321, 421 and 521 is introduced into the slots 121, 221, 321, 421 and 521, By forming the interlock, the plate materials P1 and P2 can be restrained with a predetermined strength through the inserting portions 120, 220, 320, 420 and 520.

The inserting portions 120, 220, 320, 420 and 520 exhibit a sufficient resistance against the rotational direction of the plate materials P1 and P2 and the inserting portions 120, 220, 320, 420 and 520 It is possible to prevent the rivet nut units 100, 200, 300, 400 and 500 from rotating when the bolts are fastened by restricting the plate materials P1 and P2 with a predetermined strength, And the bonding strength can be further increased.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various modifications and changes may be made without departing from the scope of the appended claims.

100, 200, 300, 400, 500: rivet nut unit
110, 210, 310, 410, 510:
111, 211, 311, 411, 511: through holes
121, 221, 321, 420, 520:
121, 221, 321, 421, 521: Slot
130, 230, 330, 430, 530:
131, 231, 331, 431, 531:
133, 233, 333, 433, 533:
235, 335, 435: third support projection
437: fourth support projection
H: hole
P1, P2: Plate
N: thread

Claims

A rivet nut unit in which a bolt is fastened while rivetting at least one plate member and joining the plate members together,
A head portion having a through hole formed at a center thereof corresponding to the hole, the hole being formed at a position corresponding to the hole machined to the plate, the one surface being in contact with one surface of the plate; And
And an end portion that is integrally extended from one surface of the head portion and is inserted into the hole and the end portion that is inserted and protruded into the hole is bent to the other surface of the plate member during riveting to couple the head portion to the plate member, ;
Wherein the rivet nut unit comprises:

The method according to claim 1,
The insert
Wherein the rivet nut unit is formed in a hollow cylindrical shape corresponding to the through-hole.

The method according to claim 1,
The slot
Wherein the rivet nut unit is formed to extend from one end of the insertion unit toward the other end connected to the head unit and is formed at a position spaced apart from the outer circumference of the insertion unit at a predetermined angle.

The method according to claim 1,
The slot
Wherein three of the rivet nut units are spaced apart at an angle of 120 占 from the outer circumferential surface of the insert unit.

The method according to claim 1,
The head
Wherein at least one support part integrally protrudes from one surface of the plate member corresponding to one surface of the plate member.

6. The method of claim 5,
The support
A plurality of first support protrusions formed radially from an outer peripheral surface of the insertion portion toward an outer peripheral surface of the head portion; And
A plurality of second support protrusions formed along the periphery of the head portion between the respective first support protrusions;
Wherein the rivet nut unit comprises:

The method according to claim 6,
The first support protrusion
Wherein six portions are formed on one surface of the head portion at an angle of 60 degrees along the circumferential direction.

The method according to claim 6,
The second support projection
Wherein the rivet nut unit is circularly rounded from the outer circumferential surface of the head unit toward the insertion unit, and is formed at an angle of 60 占 along the circumferential direction of the head unit.

The method according to claim 6,
The support
Further comprising third support protrusions formed by interconnecting one side of the head portion and one side of the outer circumferential surface of the insertion portion in correspondence with the respective second support protrusions.

10. The method of claim 9,
The third support projection
Wherein the rivet nut unit is formed in a triangular shape inclined downward from one surface of the head portion toward an outer circumferential surface of the support portion.

The method according to claim 6,
The support
And a third support protrusion formed by interconnecting each of the first support protrusions between each of the second support protrusions and the insertion portion.

12. The method of claim 11,
The third support projection
Wherein the rivet nut unit is formed in a circular ring shape protruding from one surface of the head portion.

The method according to claim 6,
The support
A third support protrusion formed by interconnecting each of the first support protrusions between each of the second support protrusions and the insertion portion; And
A fourth support protrusion formed by interconnecting one side of the head portion and one side of the outer circumferential surface of the insertion portion at positions corresponding to the respective second support protrusions;
Wherein the rivet nut unit further comprises:

14. The method of claim 13,
The third support projection
Wherein the rivet nut unit is formed in a circular ring shape protruding from one surface of the head portion.

14. The method of claim 13,
The fourth support projection
Wherein the rivet nut unit is formed in a triangular shape inclined downward from one surface of the head portion toward an outer circumferential surface of the support portion.

6. The method of claim 5,
The support
A plurality of first support protrusions formed to be inclined in a spiral direction from an outer peripheral surface of the insertion portion toward an outer peripheral surface of the head portion; And
A plurality of second support protrusions formed along the periphery of the head portion and connected to the other end of each of the first support protrusions, one end of which is connected to one side of the outer circumferential surface of the support portion;
Wherein the rivet nut unit comprises:

17. The method of claim 16,
The first support protrusion
Wherein six portions are formed on one surface of the head portion at an angle of 60 degrees along the circumferential direction.

17. The method of claim 16,
The second support projection
Wherein the rivet nut unit is circularly rounded from the outer circumferential surface of the head unit toward the insertion unit, and is formed at an angle of 60 占 along the circumferential direction of the head unit.

The method according to claim 1,
The plate
Wherein two sheet members formed of different materials are arranged in a stacked manner.