JP4887477B2 - Member connection structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combination structure for members which facilitates aligning of combination holes drilled in respective members and is difficult to loose a combination made by rivets. <P>SOLUTION: In a joining method for a laminated plate joining the second member 2, in which metal sheets 22 are stuck on both sides of synthetic resin core material 21, and a first member 1 with rivets 4, each of which has a cylindrical rivet body 42. The rivet body 42 is penetrated into the combination hole 13 arranged on the first member 1, and is inserted into the combination hole 23 formed on the rear of the second member 2. An inserted end of the rivet 4 is enlarged in the inside of the core material 21, and the internal diameter of the combination hole 13 is set up to be larger than the outside diameter of the rivet body 42. When the combination hole 23 can be connected with a drilling tool 3 which supports a drill 5 for forming a combination hole, joining strength between the second member 2 and first member 1 is scarcely varied when joining both members with the rivets 4. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

The present invention relates to a structure for connecting members by rivets, and more specifically, a member for connecting a member having a large-diameter coupling hole and a member having a smaller-diameter coupling hole by a rivet. This relates to the bonding structure.

In general, various joining methods have been proposed as means for joining two members. Among them, the joining method using a rivet can provide a relatively strong joining force, and usually requires work only from one side. It is widely used because the members can be connected with each other. Usually, the two members are each provided with a coupling hole, and a rivet is inserted from one coupling hole into the other coupling hole to couple the two members.

Various rivets have been proposed. For example, a rivet in which the tip of a cylindrical rivet body can be expanded inside the panel material has been proposed. For example, the mandrel head includes a rivet body having a flange-shaped head at one end of a cylindrical body, and a mandrel having an enlarged head at one end of the mandrel body and inserted and assembled into the body. A plurality of cutting blade portions extending radially are provided on the lower surface portion of the portion, and the other end opening portion of the trunk portion is cut by the cutting blade portion by pulling the mandrel body to open in a petal shape in the radial direction. A rivet in which a plurality of divided leg pieces are formed has been proposed (for example, see Patent Document 1).

This rivet can be easily cut and radially expanded in the other end opening in the barrel of the rivet body by the cutting blade provided on the lower surface portion of the mandrel head. Without providing a plurality of grooves for smooth cutting on the inner wall surface, the members can be reliably and evenly joined, and a stable joining force can be obtained.
JP 2000-346023 A

However, the rivet has the following problems. That is, it is assumed that the coupling holes of the members into which the rivets are inserted are aligned, but in general, the two members to be coupled are each formed with a plurality of coupling holes and rivets at a plurality of locations. Therefore, if a misalignment occurs in the alignment of the coupling hole after the coupling hole is formed, the rivet cannot be coupled, so that high processing accuracy is required and it is not easy. Therefore, the two members are fixed in advance with an adhesive or an adhesive, and then a coupling hole is drilled, or when each coupling hole is drilled, the outer diameter of one coupling hole is set outside the rivet. There has been proposed a method of absorbing a position error such as a processing error or a construction error of the coupling hole by increasing the diameter. In the former, it is necessary to select an adhesive according to the member, and a certain curing period is required to develop adhesive strength, which is insufficient. The latter easily absorbs errors in the position of the coupling hole, but the coupling hole is made larger than the outer diameter of the rivet, so if the insertion position of the rivet deviates from the central axis, the coupling strength depends on the coupling position due to the deviation. However, there is a risk of looseness in the rivet connection state, or there may be a portion that is not blocked by the rivet in the connection hole, and an unnecessary gap may be formed, which is insufficient. It was.

The present invention solves the above-mentioned problems, and when two members are coupled by rivets, the alignment of the coupling holes formed in the respective members is easy, and loosening occurs in the coupling by the rivets. It is intended to provide a connection structure for difficult members.

In order to achieve the above object, the present invention is configured as follows. That is, the member coupling structure according to the present invention is a coupling of a member in which a first member having a large-diameter coupling hole and a second member having a smaller-diameter coupling hole are coupled by a rivet. A back surface of a first member having a structure in which two ridges opposed to the surface are provided in the longitudinal direction and a large-diameter coupling hole is previously formed between the two ridges. The second member is overlaid on the surface, and then the lower surface of the guide portion of the drilling jig is brought into contact with the upper surfaces of the two ridges of the first member and is suspended downward from the lower surface of the guide portion. A cylindrical projection is inserted into a large-diameter coupling hole, and then the second member is coupled with a smaller diameter than the coupling hole of the first member by a drill inserted into the drill insertion hole penetrating the projection from the guide portion. drilled holes, or inserted into the small diameter of the coupling hole from the coupling hole of the large diameter with The lower surface of the ring-shaped portion of the head first of said two rivets were brought into contact with the upper surface of the ridges of the member, it is characterized in that so as to couple the both members.

According to the present invention, the second member is overlaid on the back surface of the first member in which the large-diameter coupling hole is previously drilled, and then the guide portion of the drilling jig is applied to the surface of the first member. In addition, the cylindrical protrusions that hang downward from the guide portion are inserted into the large-diameter coupling hole, so that the drilling jig is inadvertently displaced in the direction perpendicular to the central axis of the coupling hole of the member. There is nothing to do. Further, since the drill inserted into the drill insertion hole that penetrates the cylindrical projection from the guide portion, the second member is formed with a coupling hole having a smaller diameter than the coupling hole of the first member. The coupling hole formed in the two members can be formed along the central axis direction of the drill insertion hole. Therefore, it is easy to create a coupling hole in which the two members are aligned, and it is difficult for the rivet insertion position to be biased. Therefore, the coupling strength of the rivet is not easily biased. Problems such as deformation are less likely to occur.

Next, the best mode for carrying out the present invention will be specifically described with reference to the drawings.

That is, FIG. 1 is a cross-sectional view of an embodiment of a panel material according to the present invention, FIG. 3 is an explanatory view showing a usage state of a drilling jig, and FIG. 4 is a method for joining members according to the present invention. It is explanatory drawing which shows an example.

In the drawings, 1 is a first member, 2 is a second member, and the connecting structure of members according to the present invention is mainly composed of a first member 1 and a second member 2, and both are constituted by rivets 4. The members 1 and 2 are combined and attached to a wall surface W such as a ceiling surface with screws or the like.

First, the first member 1 is formed in a flat plate shape, and the overlapping surface 11 that is overlapped with the second member 2 is formed on the back surface thereof, and the contact surface 12 that faces the overlapping surface 11 is formed on the contact surface 12. A coupling hole 13 penetrating in the direction is provided, and the rivet 4 is inserted therein. In this embodiment, as shown in FIG. 1 and FIG. 2, two fixing portions 14 for fixing to a wall surface W such as a ceiling surface are provided, and the fixing portions 14 are two pieces from both end portions of the contact surface 12. They are connected via connecting parts 15 extending toward the fixing part 14 respectively. The first member 1 may have a form that does not have the fixing part 14, or may have one fixing part 14 or a plurality of three or more fixing parts 14. Further, the extending position of the connecting portion 15 from the contact surface 12 is not limited to the side end portion of the contact surface 12 and is appropriately provided at a location that does not hinder the coupling with the second member 2. Can do.

The first member 1 is generally composed of a member obtained by cutting a long mold material obtained by extrusion molding of aluminum or synthetic resin into an appropriate length. However, the first member 1 is made of a metal other than aluminum, or a metal or inorganic material. Depending on the length of the first member 1 and the required strength, such as a composite material with a synthetic resin, it can be used as appropriate.

Subsequently, as shown in FIG. 1, the second member 2 is formed in a substantially rectangular shape and has metal sheets 22 attached to both front and back surfaces of the core material 21. The core material 21 generally has a thickness of 1 to 5 mm and is produced by extrusion molding from a thermoplastic synthetic resin such as polyethylene or polypropylene, and is made of polyethylene or polypropylene alone, or these are kneaded appropriately. In addition, an inorganic material such as aluminum hydroxide or magnesium hydroxide may be appropriately kneaded to improve flame retardancy. Further, in this embodiment, the first member 1 is overlapped along the peripheral end portion of the surface of the second member 2 and is coupled by the rivet 4, but this coupling position depends on the use state. It can be set appropriately.

Next, the metal sheet 22 is generally made of a metal foil such as an aluminum alloy, stainless steel, or copper, and has a thickness of 0.1 to 5 mm. The surface may be painted in order to enhance the decorativeness, and a decorative sheet or film may be attached, but may be used as it is.

The form of the 2nd member 2 is not restricted to this form, The metal sheet may be stuck only on the single side | surface of the core material 21, and the thing formed only from the core material 21 may be used, and metal It may be formed only from a sheet-like material or a plate-like material.

5A and 5B are explanatory views of the punching jig 3, wherein FIG. 5A is a plan view, FIG. 5B is a front view, and FIG. 5C is a side view. The perforating jig 3 includes a guide portion 31 formed in a flat plate shape and a protrusion 32 provided on the back side thereof. The protrusion 32 has a cylindrical shape, can be inserted into the coupling hole 13 of the first member 1, and has a drill insertion hole 33 that penetrates from the surface side of the drilling jig 3 toward the protrusion 32. Yes. As shown in FIG. 6, the drilling jig 3 uses a material harder than the drill 5 for the peripheral edge 34 of the drill insertion hole 33 to improve the wear resistance of the peripheral edge of the drill insertion hole 33. You may let them.

As shown in FIG. 4, the rivet 4 is formed in a cylindrical shape and has a rivet body 41 having a ring-shaped portion 42 protruding in the circumferential direction of its head, and is inserted through the rivet body 41 and A rod-shaped mandrel 44 having a bulging portion 43 having one end larger than the inner diameter of the rivet body 41 .

Next, a method for creating the coupling hole 23 in the second member 2 will be described in detail. In this embodiment, as shown in FIG. 2, the contact surface 12 of the overlapping surface 11 of the first member 1 is provided with two ridges 16 facing each other in the longitudinal direction, and two ridges A coupling hole 13 is formed between the strips 16. As a result, the coupling hole 13 can be created at a predetermined position without being displaced in the direction orthogonal to the longitudinal direction if it is positioned with respect to the longitudinal direction of the first member 1.

Subsequently, as shown in FIG. 3A, the second member 2 is disposed on the overlapping surface 11 side of the first member 1, and the first member 1 is It fixes so that it may not position-shift with respect to the member 2. FIG. Next, the drilling jig 3 is placed on the contact surface 12 side of the first member 1, and the lower surface of the guide portion 31 is brought into contact with the surface of the first member 1. In this embodiment, the lower surface of the guide portion 31 of the punching jig 3 is brought into contact with the upper surface of the opposing protruding ridges 16. Then, the projection 32 of the drilling jig 3 is inserted into the coupling hole 13, and the drill 5 is inserted into the drill insertion hole 33 of the drilling jig 3 and coupled to the second member 2 as shown in FIG. Holes 23 are created.

In the coupling hole 13 of the first member 1, the entrance / exit end on the second member 2 side may be cut out along the circumferential direction to provide a countersink (not shown). Thereby, since the flash produced on the surface side of the second member 2 at the time of drilling can be accommodated in the notch portion of the countersink, the first flash between the first member 1 and the second member 2 is caused by the flash. Unnecessary gaps are generated, and deformations and distortions of the respective members are less likely to occur.

Compared with the case where the drilling jig 3 has no projection 32 or the case where the projection 16 is not formed on the overlapping surface 11 of the first member 1, the drill insertion hole 33 is longer in this embodiment. Therefore, when the drill 5 is inserted into the drill insertion hole 33, the drill 5 becomes difficult to tilt and is easily guided along the central axis direction of the drill insertion hole 33. Further, the alignment between the coupling hole 13 and the coupling hole 23 is facilitated, and when the rivet 4 is inserted into the coupling holes 13 and 23, the insertion position is not easily biased. In this embodiment, since the lower surface of the guide portion 31 of the drilling jig 3 is brought into contact with the upper surface of the opposing protruding ridges 16, the drill insertion holes 33 are formed according to the length of the protruding ridges 16. length longer of the effect Ri more easily exert a, by forming the projections 16, drilling work as the more precisely, it becomes easier.

Next, a method of connecting the first member 1 and the second member 2 with the rivet 4 will be described. First, as shown in FIG. 4A, the rivet 4 is inserted into the coupling hole 23 of the second member 2 through the coupling hole 13 of the first member 1, and the lower surface of the ring-shaped portion 42 of the rivet body 41. Is brought into contact with the contact surface 12 side of the first member 1. Next, when the mandrel 44 is pulled out toward the ring-shaped part 42 side of the rivet body 41 by using the air riveter 6, the leg part 45 of the rivet body 41 has a bulging part of the mandrel 44 as shown in FIG. 43 expands in a petal shape toward the side. Thus, the second member 2 and the first member 1 are coupled by the rivet 4. Note that the leg portion 45 may be provided with a cut or a groove in the longitudinal direction from the tip thereof so that the leg portion 45 of the rivet body 41 can be expanded.

Next, the form shown in FIG. 7 will be described.
In the member coupling structure shown in FIG. 1, the coupling hole 23 of the second member 2 is penetrated, whereas in the member coupling structure shown in FIG. 1 is different from the embodiment shown in FIG. 1 only in that the bottomed hole 24 is provided and the end of the rivet 4 is embedded in the second member 2. is there.

That is, in the second member 2 according to this embodiment, the coupling hole 23 is formed by the same method as described above. However, as shown in FIG. A head 51 is formed that is larger than the outer diameter of the drill insertion hole 33 of the drilling jig 3. Thereby, when the coupling hole 23 is formed in the second member 2 with the drill 5, the drill 5 moves in the direction of the second member 2, and the lower surface of the head 51 is guided by the guide portion 31 of the drilling jig 3. The drill 5 is restricted from moving in the direction of the second member 2. Accordingly, the coupling hole 23 can be a bottomed hole in which the bottom 24 remains, and the depth thereof can be made constant. As a means for adjusting the depth of the coupling hole 23, the formation position of the head 51 of the drill 5 may be appropriately set in the longitudinal direction of the drill 5, and the thickness of the guide portion 31 of the drilling jig 3 may be set. May be set as appropriate, and the height of the ridges 16 of the first member 1 may be set as appropriate.

Next, a method of connecting the first member 1 and the second member 2 with the rivet 4 according to this embodiment will be described. First, as shown in FIG. 9A, the rivet 4 is inserted into the coupling hole 23 of the second member 2 through the coupling hole 13 of the first member 1. At this time, the rivet body 41 is inserted so that a gap is formed between the lower surface of the ring-shaped portion 42 of the rivet body 41 and the contact surface 12 of the first member 1. Next, as shown in (b), the rivet body 41 is pushed toward the inside of the second member 2 using the air riveter 6. Thereby, the leg part 45 of the rivet main body 41 is expanded in a petal shape toward the side by the bulging part 43 of the mandrel 44 . Then, as shown in FIG. 7, when the rivet body 41 is moved until the ring-shaped portion 42 comes into contact with the contact surface 12 of the first member 1, the leg portion 45 of the rivet body 41 expands by a predetermined length. The first member 1 and the second member 2 are coupled by the rivet 4.

Since the coupling hole 23 has a predetermined depth, since the coupling hole 23 is shallow, the rivet body 41 is not sufficiently expanded, and the bonding strength by the rivet 4 is insufficient, or the coupling hole 23 is deep. The spread of the rivet body 41 is increased, and the risk that the core material 21 is pushed and the front surface of the second member 2 is swollen or distorted is reduced. In addition, since all of the created coupling holes 23 are easily made to substantially the same depth, the above-described problems are hardly caused even locally.

Further, when the rivet body 41 is expanded inside the core material 21 of the second member 2, a stress is generated in the core material 21 accordingly. This stress is applied to the rivet body 41 and the first member 1. Since it is easy to escape in the direction of the gap with the coupling hole 13, the stress inside the core member 21 is easily eliminated, and there is less risk of swelling or distortion on the back side of the second member 2.

According to the present invention, when two members are coupled by rivets, it is easy to align the coupling holes formed in the respective members, and the coupling by the rivets is less likely to be loosened. , There are relatively many joints by rivets, such as when attaching frame material or frame material to a surface material having a relatively large area, for example, for surface materials used for surface decoration of indoor walls and ceiling surfaces of existing buildings Can be suitably used.

It is sectional drawing of one Embodiment of the coupling | bonding structure of the member which concerns on this invention. It is a perspective view which shows the 1st member of FIG. It is explanatory drawing which shows the use condition of a supporting member. It is explanatory drawing which shows an example of the joining method which concerns on this invention. It is explanatory drawing of a supporting member. It is AA sectional drawing of FIG. It is sectional drawing of the other form of implementation of the coupling | bonding structure of the member which concerns on this invention. It is explanatory drawing which shows the use condition of the supporting member which concerns on embodiment shown by FIG. It is explanatory drawing which shows an example of the coupling | bonding method which concerns on embodiment shown by FIG.

DESCRIPTION OF SYMBOLS 1 1st member 11 Superposition surface 12 Contact surface 13 Bonding hole 16 Projection 2 2nd member 21 Core material 22 Metal sheet 23 Bonding hole 3 Drilling jig 31 Guide part 32 Protrusion 33 Drill insertion hole 4 Rivet 41 Rivet Main body 42 Ring-shaped part 43 Swelling part 44 Mandrel 45 Leg part 5 Drill 51 Head part 6 Air riveter

Claims (1)

A coupling structure of a member in which a first member having a large-diameter coupling hole and a second member having a smaller-diameter coupling hole than that of the coupling hole are coupled by a rivet, and is opposed to the surface. A plurality of protrusions are provided in the longitudinal direction and a second member is superimposed on the back surface of the first member in which a large-diameter coupling hole is previously formed between the two protrusions ; The lower surface of the guide part of the drilling jig is brought into contact with the upper surfaces of the two ridges of the first member, and the cylindrical protrusion hanging downward from the lower surface of the guide part is used as a large-diameter coupling hole. After that, a drill hole inserted into the drill insertion hole penetrating from the guide portion into the projection is drilled in the second member with a coupling hole having a smaller diameter than the coupling hole of the first member. before inserting the coupling hole to the small diameter of the coupling hole and the lower surface of the ring-shaped portion of the head portion of the first member Coupling structure member by two convex rivet is brought into contact with the upper surface of, it is characterized in that so as to couple the both members.

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