JP3076508U - Joining metal fittings for laminated boards - Google Patents

Abstract

(57) [Problem] To provide a joint fitting useful for laminating and joining thin plates made of metal or synthetic resin. SOLUTION: The joining metal fitting 1 for a laminated plate has at least one flange 7 disposed on one side of a base plate 2 via a columnar portion 7a on the center line of a base plate 2 and at least two flanges 7 on the other side. The flanges 3 and 4 are sequentially arranged via the respective columnar portions 3a and 4a to form an integral structure, and the diameter of each of the columnar portions 3a, 4a and 7a and the flanges 3, 4 and 7 decreases as the distance from the base plate 2 increases. Become

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint for a laminate used for laminating and joining three or more thin plates made of metal or synthetic resin.

[0002]

2. Description of the Related Art A metal thin plate having a predetermined thickness, for example, an aluminum thin plate needs to be thickened depending on the application. In this case, a predetermined number of metal thin plates are laminated and used. When laminating these metal sheets, the metal sheets were conventionally laminated and joined by welding, caulking, or the like. In addition, lamination joining of metal sheets was performed using a special metal adhesive.

In some applications, a plurality of thin sheets made of a synthetic resin, for example, a printed circuit board, are laminated and used. In this case, the substrates were mainly bonded with an adhesive.

[0004]

[Problems to be solved by the invention] However, when welding, caulking, or the like is performed, irregularities are generated on the surface of the laminated plate. Therefore, a special processing technique is further required to remove the irregularities. Further, when an adhesive is used, there is a problem that a metal or synthetic resin plate is peeled off depending on a use environment.

An object of the present invention is to solve the above-mentioned problems and to provide a joint for a laminated plate capable of easily, reliably and easily achieving the laminated joining of a metal plate or a synthetic resin plate.

[0006]

Means for Solving the Problems To achieve the above object, the present invention provides at least one flange on one side of a center line of a base plate through a columnar portion. At least two flanges are sequentially disposed on the side surface of the base plate via respective columnar portions to form an integral structure, and the diameter of each columnar portion and flange decreases as the distance from the base plate decreases. It is in the metal fittings for plates.

In a preferred embodiment of the present invention, the cross-sectional shape of the base plate is a circle or a polygon, for example, a triangle, a square, a pentagon, or the like. Further, it is preferable that the peripheral surface of the circular base plate be formed with irregularities.

[0008] In another preferred embodiment of the present invention, the joint has a hole or a through hole that is partially punched in the center thereof. In addition, such a hole may be used as a female screw portion.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a first embodiment of the joint fitting of the present invention, and FIG. 2 is a plan view thereof.

As shown in FIG. 1 or FIG. 2, the joining fitting 1 of the first embodiment laminates and joins n + m (seven in the illustrated example) metal or synthetic resin thin plates (not shown). The length on the center line is substantially equal to the lamination thickness of these thin plates. The joining metal fitting 1 has n circular flanges (four in the illustrated example) 3, 4, 5, 6 on one side thereof on the center line of the base plate 2 having a circular cross section. 4a, 5a, and 6a, and m circular flanges (three in the illustrated example) 7, 8, and 9 are provided on the other side via the respective columnar portions 7a, 8a, and 9a. And has an integral structure that is arranged sequentially.

In the joint 1, the diameter of each of the columnar portions 3 a, 4 a, 5 q, 6 a, 7 a, 8 a, 9 a and the flanges 3, 4, 5, 6, 7, 8, 9 is determined from the base plate 2. The diameter gradually decreases as the distance increases. As shown in FIG. 1, the diameters of the base plate 2 and the flanges 7, 8, and 9 are each L₂, L₇, L₈, L₉And the diameter of each of the cylindrical portions 7a, 8a, 9a is L_7a, L_8a, L_9aThen, L₂> L₇> L₈> L₉And L_7a> L_8a> L_9aAnd L₇> L_7a, L ₈ > L_8a, L₉> L_9aBecomes the relationship. Further, β (L₂-L₇) / 2 = α (L ₇ -L_7a), Β (L₇-L₈) / 2 = α (L₈-L_8a), Β (L₈-L₉) / 2 = α (L₉-L_9a) Must be satisfied. Note that α and β are parameters depending on the thickness of the thin plate to be laminated. A similar relationship exists in the flanges 3, 4, 5, 6 and the columnar portions 3a, 4a, 5a, 6a disposed on the other side surface of the base plate 2.

In the present invention, when one of m and n is 1, the other is an integer of 2 or more, and when m and n are integers of 2 or more, n ≧ m.

In FIG. 1, A ₁ , A ₂ , A ₃ , A ₄ , B ₁ , B ₂ , and B ₃ indicate the thicknesses of the thin plates to be laminated. When laminating and joining n + m thin plates, even if the thicknesses of the respective thin plates are the same or different, a predetermined number of thin plates can be formed by changing the diameter of each flange and the columnar portion according to the above parameters α and β. Lamination joining can be performed without gaps.

Next, using the metal fitting 1 shown in FIG. 1, seven (n + m = 7) metal or synthetic resin thin plates (for example, aluminum thin plates, print substrates, etc.) having different plate thicknesses are bonded. The mode of laminating and joining will be described with reference to FIGS. First, each of seven thin sheets made of metal or synthetic resin, which are softer than the joint fitting 1 (for example, made of stainless steel), in the illustrated example, aluminum sheets A1, A2, A3, A4, B1, B2, and B3c, respectively. At the position, a hole having the same diameter as the base plate 2, flanges 3, 4, 5, 6, 7, 8, and 9 of the fitting 1 is formed. Next, as shown in FIG. 3, the first flanges 3, 7 of the joining fitting 1 are fitted into the respective holes of the thin plates A1, B1. In this state, when a pressing force is applied to both the thin plates A1 and B1 from above and below by a hammer or a press machine, a plastic deformation occurs at a contact portion between the thin plates A1 and B1 and the base 1 of the joint 1 of the thin plates. Due to this plastic deformation, the portion of each thin plate displaced by the base plate plastically flows into each space existing between the base plate 2, the first flanges 3, 7 and the columnar portions 3a, 7a. As shown in FIG. 4, the lamination joining of the two thin plates A1 and B1 is easily and easily realized.

Next, as shown in FIG. 4, the second flanges 4 and 8 of the joining fitting 1 are fitted into respective holes of the thin plates A2 and B2. In this state, when a rolling force is applied to both the thin plates A2 and B2 from above and below by a hammer or a press machine, plastic deformation is caused at the contact portions of the thin plates A1 and B2 with the first flanges 3 and 7 of the contact alloying tool 1. Occurs. Due to this plastic deformation, the portion of each thin plate pushed away by the first flanges 3, 7 is present between the first flanges 3, 7 and the second flanges 4, 8 and the columnar portions 4a, 8a. As a result, as shown in FIG. 5, two thin plates A2 and B2 are simply and easily laminated and joined on the previously laminated plates A1 and B1.

FIG. 5 shows that after the above-described processing is repeated, the thin plates A3 and B3 are laminated and joined on the laminated plates A1, A2, B1 and B2 in contact with the third flanges 5 and 9, and then the fourth laminate A4 is formed. 5 shows a state in which the flange 6 is fitted in the hole of the thin plate A4. In this state, when a rolling force is applied to the thin plate A4 from above by a hammer or a press machine, a plastic deformation is generated at a contact portion of the thin plate A4 with the third flange 5 of the joint 1. Due to this plastic deformation, the part displaced by the third flange 5 of the thin plate plastically flows into the space existing between the third flange 5 and the fourth flange 6 and the columnar portion 6a, and As a result, as shown in FIG. 6, the thin plate A4 is simply and easily laminated and joined on the previously laminated and joined plate A3.

As shown in FIG. 6, seven aluminum thin plates A 1, A 2, A 3, A 4, B 1, B 2, and B 3 are firmly laminated and joined by the joint fitting 1. However, when these thin plates must never rotate around the joint, the joint 10 shown in FIG. 7 is used. The joining fitting 10 has the same structure as that of the joining fitting 1 of FIG. 1 except that serrated irregularities 12 are formed on the peripheral surface of the base plate 2. When the joining fitting 10 is used, at the time of laminating joining of the thin plates, the portion of the thin plate that abuts on the base plate plastically flows into the space between the base plate, the first flange, and the columnar portion, and the peripheral portion of the base plate. By cutting into the 12 thin plates formed on the surface, the two laminated thin plates are prevented from rotating with each other, and the rotation of the thin plates is completely prevented.

In the joint 1 shown in FIG. 1, the cross-sectional shape of the base plate 2 is circular, but the cross-sectional shape of the base plate can be polygonal depending on the physical properties of the thin plate, for example, the degree of plastic deformation. As the polygon, a triangle, a quadrangle, a pentagon, a hexagon, a heptagon, an octagon and the like are preferable. FIGS. 8 and 9 show an example of a joint fitting having a polygonal base plate. 8 has a triangular base plate 15. 9 has a hexagonal base plate 17.

Although not shown in the longitudinal section, the joining fitting 1 shown in FIG. 1 is entirely made of a solid metal. Depending on the use of the laminated plate, a through hole or a hole partially drilled can be provided at the center of the joint fitting as shown in FIGS. 10 (a) and 10 (b). The joint fitting 18 shown in FIG. 10A has a through hole 19 at the center thereof. For example, when a large number of printed circuit boards are stacked, a lead wire or the like can be passed through the through hole 19. The joining fitting 20 shown in FIG. 10 (b) has a hole 21 partially drilled in the center thereof, and can be fixed to another member through this hole. Further, a female screw portion may be formed instead of the through hole 19 or the hole 21.

[0020]

[Effects of the Invention] As described above, by using the metal fittings according to the present invention, three pieces can be pressed down from above and below with a hammer or the like without acquiring complicated technology and without requiring special equipment. Alternatively, a thin plate made of a metal or a synthetic resin of higher quality can be easily and reliably and easily laminated and joined. If the thin plate is softer and more viscous than the joining fitting, it is easy to laminate and join thin plates made of different metals or resins as well as the same metal or resin.

Further, by appropriately changing the diameter and position of each flange and columnar portion provided on the base plate in accordance with the thickness of the thin plate to be laminated, the same or different plate thickness can be obtained. A large number of metal or synthetic resin thin plates can be easily laminated and joined.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of a joining fitting.

FIG. 2 is a plan view showing a first embodiment of the joining fitting.

FIG. 3 is a partial cross-sectional view showing a step of laminating and joining a plurality of thin plates using the joining fitting of the first embodiment.

FIG. 4 is a partial cross-sectional view showing a step of laminating and joining a plurality of thin plates using the joining fitting of the first embodiment.

FIG. 5 is a partial cross-sectional view showing a step of laminating and joining a plurality of thin plates using the joining fitting of the first embodiment.

FIG. 6 is a partial cross-sectional view showing a step of laminating and joining a plurality of thin plates using the joining fitting of the first embodiment.

FIG. 7 is a plan view showing a second embodiment of the joining fitting.

FIG. 8 is a plan view showing a third embodiment of the joining fitting.

FIG. 9 is a plan view showing a fourth embodiment of the joining fitting.

FIG. 10 is a plan view showing fifth and sixth embodiments of the joining fitting.

[Explanation of symbols]

1,1014,16,18,20 Joining metal fittings 2,15,17 Base plate 3,4,5,6,7,8,9 Flange 3a, 4a, 5a, 6a, 7a, 8a, 9a Cylindrical part 12 Serrated 19,21 holes A1, A2, A3, A4, B1, B2, B3 Metal or synthetic resin thin plate

Claims (4)

[Utility model registration claims] At least one flange is arranged on one side of the base plate via a columnar portion on the center line of the base plate, and at least two flanges are sequentially formed on the other side of the baseplate via the respective columnar portions. Wherein the diameter of each of the columnar portion and the flange decreases as the distance from the base plate increases. 2. The joint according to claim 1, wherein the cross section of the base plate is circular or polygonal. 3. The joint according to claim 2, wherein when the base plate has a circular shape, a peripheral surface thereof has irregularities. 4. The joint for a laminated plate according to claim 1, wherein the joint has a hole or a through hole that is partially punched in a center portion of the joint.