JP2006207123A - Connection structure of steel member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection structure of a steel member capable of facilitating connecting operation with less number of components, preventing a fitted part from being rattled, and increasing strength. <P>SOLUTION: In this connection structure of the steel member, steel members of roughly rectangular shape having connection legs facing each other formed projectedly at their connection parts are connected to each other by fitting the connection legs to each other, the upper connection leg 20 of one steel member 1 is formed by forming an engagement projection 21 on the inside of its base end part, forming a recessed groove 23 overlappingly with the engagement face 22 of the engagement projection 21, and forming a sharp projected part 24 at its tip part. The lower connection leg 30 of the other steel member is positioned on the inside of the upper connection leg of one steel member, and formed by forming, at its tip part, an engagement projection and an outward locking claw 31 engaged with the recessed groove, and forming, at its base end part, a fitting groove 32 of approximately V-shape in cross section fitted to the projected part. To connect the steel members to each other, the projected part is fitted to the fitting groove, and the engagement projection is adhered to the recessed groove and the locking claw through an adhesive agent 50 filled in the recessed groove. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a connecting structure for profiles, and more particularly to a connecting structure for a substantially rectangular profile used for, for example, a truck cage or a building material.

  Generally, panels used for truck tilts and building materials are hollow sections with a substantially rectangular cross section formed of extruded profiles made of aluminum alloy, and these sections are fitted together. Are connected.

As a conventional connecting structure of this type of panel, there is known a structure in which panels each having a pair of connecting legs projecting from each other are connected to each other by fitting the connecting legs together. In this connection structure, the connection leg of one panel is provided with a protrusion protruding to the inner surface side, and the connection leg of the other panel is located inside the connection leg of one panel and is provided on the connection leg of the other panel. A first fitting portion in which the claw piece is engaged with the projection of the connection leg of one panel, and a protruding piece and a connection leg in which the tip of the connection leg of one panel extends from the end of the other panel Between the connection leg of one panel and the connection leg of the other panel between the first fitting part and the second fitting part. In which a gap is formed, at least one portion of the gap between the first fitting portion, the second fitting portion, and the first fitting portion and the second fitting portion is inserted. (See, for example, Patent Document 1).
JP-A No. 2004-204575 (Claims, FIG. 1)

  However, in the connection structure described in Japanese Patent Application Laid-Open No. 2004-204575, since the fitting is performed via the sealing material, there is a risk of slipping in a direction orthogonal to the connection surface between the panels, and it is possible to sufficiently prevent rattling. In addition, there is a problem that sufficient strength cannot be obtained. Also, in order to ensure sufficient water tightness, a sealant must be inserted into the gap between the fitting portion of the distal end and the proximal end of the connection leg. There were also problems such as troublesome connection work.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a shape connecting structure that facilitates the connecting operation with a small number of constituent members, and can prevent rattling of the fitting portion and improve strength. This is a problem.

  In order to solve the above-described problem, the structural member connection structure according to claim 1 is configured such that substantially rectangular structural members projecting connection legs respectively facing the connection portions are connected to each other by fitting the connection legs together. A connecting leg of one of the profiles, wherein the connecting leg of one of the profiles is provided with an engaging projection on the inner side of the base end, and a concave groove is formed in connection with the engaging surface of the engaging projection, and A tip-like protruding portion is provided at the tip, and the connecting leg of the other profile is located inside the connecting leg of the one profile, and the engaging protrusion and the concave groove are provided at the tip. An outward engaging claw for engagement is provided, and a fitting groove having a substantially V-shaped cross section to be fitted to the protruding portion is formed at the base end portion, and the protruding portion and the fitting groove are formed. The engaging projection and the concave groove are bonded to the locking claw through an adhesive loaded in the concave groove.

  By comprising in this way, the point-like projection part provided in the front-end | tip part of the connection leg of one profile, and the fitting groove formed in the base end part of the connection leg of the other profile It can be fitted without a gap, and it can be fitted to the base end of the connecting leg of one profile via an adhesive loaded in the concave groove formed in the base end of the connecting leg of one profile. The formed engaging protrusion and the recessed groove can be bonded to the engaging claw provided at the tip of the connecting leg of the other shape member.

  According to a second aspect of the present invention, in the structure connecting structure according to the first aspect, the engaging protrusion provided on the connecting leg of the one shape member is raised in an inclined manner toward the base end side of the connecting leg. In addition, a substantially arc-shaped concave surface that forms an upward gradient from the bottom of the groove toward the inside of the shape member is formed on the shape end surface that forms the groove in cooperation with the engagement protrusion, and the other shape The connecting leg of the material is formed so as to be elastically deformable, and a convex surface substantially similar to the concave surface is formed on the distal end side of the locking claw provided on the connecting leg, and the both connecting legs are fitted. When mating, the convex surface of the connecting leg of the other shape member is slid on the inclined surface of the engaging protrusion to engage with the engaging protrusion and the concave groove. It is characterized in that the gap with the concave surface is narrowed.

  By constituting in this way, by forming a substantially arc-shaped concave surface that forms an upward gradient from the bottom of the concave groove toward the inside of the shape member on the shape end surface of one shape material, the concave surface and The adhesive can be loaded into the concave groove, and the adhesive can be prevented from protruding from the inside of the concave groove to the outside. Also, when fitting both connecting legs, after the convex surface of the connecting leg of the other profile member slides on the inclined surface of the engaging projection of the connecting leg of one profile member, and after passing through the inclined surface The so-called spring back can surely engage the engaging protrusion and the concave groove, and can narrow the gap between the convex surface and the concave surface.

  According to a third aspect of the present invention, in the shape member connecting structure according to the first or second aspect, the connecting portion is formed on either an end portion or a surface portion of the shape member.

  By comprising in this way, shape materials can be connected linearly or crossed.

  According to this invention, since it is configured as described above, the following effects can be obtained.

  (1) According to the invention described in claim 1, the pointed protrusion provided at the distal end portion of the connecting leg and the fitting groove formed at the proximal end portion of the connecting leg are fitted without a gap. The engaging protrusion and the recessed groove can be bonded to the engaging claw provided at the distal end portion of the connecting leg through the adhesive loaded in the recessed groove formed in the proximal end portion of the connecting leg. Therefore, it is possible to firmly connect the connecting surfaces of the shape members in the direction orthogonal to the connecting surfaces. Therefore, it is possible to facilitate the connecting operation with a small number of constituent members, to prevent rattling of the fitting portion, and to improve the strength.

  (2) According to the invention described in claim 2, the adhesive can be loaded into the concave surface and the groove formed on the end surface of the one shape member, and the adhesive protrudes from the inside of the groove to the outside. When fitting both connecting legs, the convex surface of the connecting leg of the other profile member is slid on the inclined surface of the engaging projection of the connecting leg of one profile member, While being able to engage with an engaging protrusion and a concave groove reliably, the clearance gap between a convex surface and a concave surface can be narrowed. Therefore, in addition to the above (1), the connection work can be facilitated, the adhesion can be strengthened, and the gap in the fitting portion can be made as narrow as possible to achieve watertightness. Improvements can be made.

  (3) According to the invention described in claim 3, since the shape members can be connected in a straight line shape or a cross shape, in addition to the above (1) and (2), various shapes can be connected to each other. Can be achieved.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the best embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First Embodiment FIG. 1 is a cross-sectional view of a connecting portion showing a first embodiment of a profile connecting structure according to the present invention, and FIG. 2 is a cross-sectional view showing a first embodiment of the profile according to the present invention. 3 is an enlarged sectional view of a portion I in FIG. 2, FIG. 4 is an enlarged sectional view of a portion II in FIG. 2, and FIG. 5 is a perspective view showing a state before the shapes are connected.

  The shape member 1 is formed of, for example, a substantially rectangular hollow extruded shape member made of an aluminum alloy. As shown in FIG. 2, the profile 1 includes a hollow rectangular profile body 10 having a partition wall 11 at the center, and a connecting portion 12 on one end side of the profile body 10 (on the upper end side in FIG. 2). A pair of upper connecting legs 20 projecting upward from a connecting portion, hereinafter referred to as an upper end portion 12, and a connecting portion 13 on the other end side of the profile body 10 (the lower end connecting portion in FIG. 2). , Hereinafter referred to as a lower end portion 13) and a pair of lower connecting legs 30 that protrude downwardly.

  The upper connecting leg 20 is provided with an engaging projection 21 on the inner side of the base end portion, and a concave groove 23 is formed continuously to the engaging surface 22 of the engaging projection 21, and a pointed tip is formed at the distal end portion. A protruding portion 24 is provided. In this case, the engaging protrusion 21 protrudes in an inclined shape toward the proximal end side of the upper connecting leg 20. In addition, a substantially arc-shaped concave surface that forms an upward gradient from the bottom of the concave groove 23 toward the inside in the thickness direction of the structural member 1 on the shape member end surface that forms the concave groove 23 in cooperation with the engaging protrusion 21. 25 is formed. Further, as shown in FIG. 3, the protruding portion 24 is formed in a state where the outer surface 20 b is cut at an angle of about 45 ° with respect to the inner surface 20 a of the upper connecting leg 20 parallel to the profile 1. .

  On the other hand, the lower connecting leg 30 is positioned inside the upper connecting leg 20, and an outward locking claw 31 that engages with the engaging protrusion 21 and the recessed groove 23 is provided at the tip, and A fitting groove 32 having a substantially V-shaped cross section of about 45 ° that fits with the protruding portion 24 is formed at the base end portion. In this case, when the lower connecting leg 30 is fitted to the upper connecting leg 20, the lower connecting leg 30 is formed to be elastically deformable so as to come into contact with the inclined surface of the engaging protrusion 21 and be displaced inward of the shape member 1. ing. Further, a projecting piece 34 having a convex surface 33 substantially similar to the concave surface 25 is formed on the distal end side of the locking claw 31 provided on the lower connecting leg 30.

  Next, the structure connecting structure according to the present invention will be described.

  In order to connect the shape members 1 formed as described above, first, the adhesive 50 is applied to the concave surface 25 and the groove 23 provided on the base end side of the upper connecting leg 20 of one shape member 1. Load it. In this state, when the lower connecting leg 30 of the other shape member 1 is inserted into the inner side of the upper connecting leg 20, the lower connecting leg 30 is elastically deformed inward and the convex surface on the distal end side of the locking claw 31. When 33 slides on the inclined surface of the engaging protrusion 21 and passes through the engaging protrusion 21, the latching claw 31 urges the engaging protrusion 21 and the groove 23 with elastic force by a so-called spring back. On the other hand, the protrusion 24 and the fitting groove 32 are fitted with no gap. Then, the locking claw 31, the engagement protrusion 21, and the groove 23 are bonded by an adhesive 50. At this time, since the substantially arc-shaped concave surface 25 that forms an upward slope is formed continuously with the bottom of the concave groove 23, the adhesive 50 protrudes from the concave groove 23 to the outside, that is, the inner side of the profile 1. The locking claw 31 is securely bonded to the engaging protrusion 21 and the concave groove 23. In this engaged state, since the convex surface 33 and the concave surface 25 are formed in a similar shape, the gap between the convex surface 33 and the concave surface 25 is narrow. Therefore, the connected shape members 1 are firmly connected in the connecting surface and the direction orthogonal to the connecting surface.

Second Embodiment In the first embodiment, the case where the shape members 1 are connected in a straight line has been described. However, the shape connection structure according to the present invention connects the shape members 1 in a cross shape. It can also be applied to.

  For example, as shown in FIGS. 6 (a) and 6 (b), a side portion formed in the same manner as the upper connecting leg 20 at the center or end of one side surface 14 which is the connecting portion of one of the profiles 1. It is also possible to project the connecting leg 40 and to connect the side connecting leg 40 and the lower connecting leg 30 projecting from the end of the other shape member 1 by fitting.

  In this case, like the upper connecting leg 20, the side connecting leg 40 is provided with an engaging projection 21 on the inner side of the base end portion, and has a concave groove 23 connected to the engaging surface 22 of the engaging protrusion 21. It is formed and a pointed protrusion 24 is provided at the tip. In this case, the engagement protrusion 21 protrudes in an inclined shape toward the base end side of the side connecting leg 40. In addition, a substantially arc-shaped concave surface that forms an upward gradient from the bottom of the concave groove 23 toward the inside in the thickness direction of the structural member 1 on the shape member end surface that forms the concave groove 23 in cooperation with the engaging protrusion 21. 25 is formed. Further, the protruding portion 24 is formed in a state in which the outer surface 40b is cut at an angle of about 45 ° with respect to the inner surface 40a of the side connecting leg 40.

  In FIGS. 6A and 6B, the other parts are the same as those in the first embodiment, so the same parts are denoted by the same reference numerals and description thereof is omitted.

  Next, the connection structure of profiles according to the second embodiment will be described. First, the adhesive 50 is loaded into the concave surface 25 and the concave groove 23 provided on the base end side of the side connecting leg 40 of the one shape member 1. In this state, when the lower connecting leg 30 of the other shape member 1 is inserted into the inner side of the side connecting leg 40, the lower connecting leg 30 is elastically deformed inwardly while the convex shape on the distal end side of the locking claw 31 is formed. When the surface 33 slides on the inclined surface of the engaging protrusion 21 and passes through the engaging protrusion 21, the latching claw 31 urges the engaging protrusion 21 and the groove 23 with an elastic force by a so-called spring back. On the other hand, the protrusion 24 and the fitting groove 32 are fitted with no gap. Then, the locking claw 31, the engagement protrusion 21, and the groove 23 are bonded by an adhesive 50. Even in this case, since the substantially arc-shaped concave surface 25 that forms an upward slope is formed continuously with the bottom of the concave groove 23, the adhesive 50 passes from the inside of the concave groove 23 to the outside, that is, the inside of the profile 1. The locking claw 31 is securely bonded to the engaging protrusion 21 and the concave groove 23 without protruding. In this engaged state, since the convex surface 33 and the concave surface 25 are formed in a similar shape, the gap between the convex surface 33 and the concave surface 25 is narrow. Therefore, the connected shape members 1 are firmly connected in a connection surface in a direction orthogonal to the surface of the shape material 1 and a direction orthogonal to the connection surface, that is, a direction parallel to the surface of the shape material 1.

Other Embodiments In the first embodiment, the case where the upper connecting leg 20 and the lower connecting leg 30 are provided in parallel with the profile 1 from the upper and lower ends 12 and 13 of the profile 1 has been described. However, the upper connecting leg 20 and the lower connecting leg 30 are projected from the end of the profile 1 so as to be inclined, and the upper connecting leg 20 and the lower connecting leg 30 are fitted and connected in the same manner as described above. Is possible.

It is sectional drawing which shows 1st Embodiment of the connection structure of the profile which concerns on this invention. It is sectional drawing which shows 1st Embodiment of the profile in this invention. FIG. 3 is an enlarged cross-sectional view of a portion I in FIG. 2. It is the II section expanded sectional view of FIG. It is a perspective view which shows the state before the connection of a shape member. It is sectional drawing which shows 2nd Embodiment of the connection structure of the profile which concerns on this invention.

Explanation of symbols

1 Profile 12 Upper end (connecting part)
13 Lower end (connecting part)
14 Side (connecting part)
20 Upper connection leg 21 Engagement protrusion 22 Engagement surface 23 Groove groove 24 Projection part 25 Concave surface 30 Lower connection leg 31 Locking claw 32 Fitting groove 33 Convex surface 40 Side connection leg 50 Adhesive

Claims (3)

A substantially rectangular shaped member projecting connecting legs facing each other in the connecting portion, and a connecting structure for connecting the connecting legs by fitting the connecting legs together,
The connecting leg of one of the shape members has an engaging protrusion on the inner side of the base end portion, and a concave groove is formed in connection with the engaging surface of the engaging protrusion, and a pointed protrusion at the distal end portion Provided,
The connecting leg of the other shape member is positioned inside the connecting leg of the one shape member, and has an outward locking claw that engages with the engaging protrusion and the recessed groove at the distal end portion. A fitting groove having a substantially V-shaped cross section to be fitted to the protruding portion is formed at the end,
The protrusion and the fitting groove are fitted together, and the engagement protrusion, the groove and the locking claw are bonded through an adhesive loaded in the groove. Connection structure of profiles. In the connection structure of the shape members according to claim 1,
The engaging protrusion provided on the connecting leg of the one shape member is inclined upward toward the base end side of the connecting leg, and the end face of the shape member that forms a concave groove in cooperation with the engaging protrusion, A substantially arc-shaped concave surface that forms an upward gradient from the bottom of the concave groove toward the inside of the profile,
The connecting leg of the other shape member is formed to be elastically deformable, and a convex surface substantially similar to the concave surface is formed on the distal end side of a locking claw provided on the connecting leg,
When fitting both the connecting legs, the convex surface of the connecting leg of the other shape member is slid on the inclined surface of the engaging protrusion to be engaged with the engaging protrusion and the recessed groove. The shape connecting structure characterized in that the gap between the convex surface and the concave surface is narrowed. In the connection structure of the shape members according to claim 1 or 2,
The connecting structure for a shape member, wherein the connecting portion is formed on either an end portion or a surface portion of the shape member.

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