JP6506628B2 - Method of joining metal products and metal parts - Google Patents

Description

  The present invention relates to a method of joining metal products and metal parts by joining opposing end portions of metal parts, and in particular, it is possible to effectively control the swinging in the width direction and the thickness direction and reduce the cost for manufacturing as much as possible. The present invention relates to a metal product which can be easily removed and a method of joining metal parts.

  There are many techniques such as welding, bolting, and riveting as techniques for joining the ends of metal parts. For example, in the case of using welding, although it is possible to strongly join the end of the part, the welding operation is manual work, so that the processing time of the product increases and the joining state by the operator It is not suitable for mass production because of the tendency of occurrence of dispersion. In addition, the bolting and riveting methods require additional members such as bolts and rivets, resulting in an increase in cost. In addition, since bolts and rivets are provided protruding from the product plane, it is possible for the appearance surface Were difficult to use. Furthermore, when the riveting method is used, there is also a problem of being limited to semipermanent fastening applications because it becomes difficult to remove easily.

  In view of the above, various studies have been made and proposed on the joining structure of metal parts which are easy to join and high in joining accuracy without using any means such as welding as described above.

  For example, in patent document 1 (Unexamined-Japanese-Patent No. 08-112630 public information), the joining structure is easy, and the joining structure of the metal plate for frames with high joining accuracy is proposed. That is, in the document 1, the projection and the recess are formed on the bonding edge of the first frame metal plate, and the bonding edge of the second frame metal plate bonded to the first frame metal plate is formed. The projections and recesses are formed in a pattern reverse to that of the projections and recesses, and the projections, recesses and projections and recesses in both joining edges are fitted and pressed in to join the two metal plates for the frame. The joint structure of the metal plate for frames characterized by having been made is proposed.

  Moreover, in patent document 2 (Unexamined-Japanese-Patent No. 2000-314277 public information), the junction structure of the metal frame for constructions which does not produce a clearance gap or a misunderstanding in a junction part, and is strong and does not use a welding means is proposed. That is, in the document 2, a long metal frame member having a predetermined cross section is provided with a V-shaped notch toward the prospective surface direction, and the cutout end surface located on the prospective surface is predetermined A plurality of locking pieces are alternately opposed to each other with an interval and integrally protruded, and the metal frame material is bent along the V-shaped notch portion to cut out the end surfaces. There has been proposed a joint structure of a building metal frame characterized in that the corner portions are formed by bending the tip sides of the locking pieces which abut and mesh with each other.

Furthermore, in Patent Document 3 (Japanese Patent Application Laid-Open No. 2014-008518), when dividing an end of a metal plate or a metal rod having any one of rectangular, polygonal and elliptical shapes in the horizontal direction, There has been proposed an end division method capable of freely adjusting the cut length and forming a smooth division surface, a metal part manufactured by the method, and a bonding method thereof. That is, in the document 3, an end portion of a metal plate having any shape of a rectangle, a polygon and an ellipse or a metal rod having a cross-sectional shape of any one of a circle, an ellipse, a rectangle and a polygon is used. A method of dividing in the horizontal direction with respect to a plate or a metal rod, wherein at least two opposing locations on both sides of the metal plate or in the periphery of the metal rod are held by a pressing die, the metal plate or the metal rod Horizontally dividing the metal plate or the metal rod by split or split by pressing a split punch or a split punch at one end face of the split; and splitting the split at the split portion of the split And d) further pressing the punch or grit punch operation one or more times to further advance the division by splitting or gritting; and the metal plate in advance for each press forming operation. The position of at least one pressing die of the pressing die which clamps at least two opposing locations on both sides or the periphery of the metal rod from the end face of one end face of the metal plate or metal rod to the tip of the portion to be divided It has been proposed that the end division method of the metal plate or the metal rod is characterized by moving according to the distance of.

Japanese Patent Application Publication No. 08-112630 Japanese Patent Application Laid-Open No. 2000-314277 Japanese Patent Application Publication No. 2014-008518

  As described above, various studies have been made and proposed on the joining structure of metal parts that can be easily joined and high in joining accuracy without using means such as welding in the past. However, in the technique of Patent Document 1, the step of preparing the third metal member and installing the third metal member is required to control the swinging of the joined metal parts in the plate thickness direction, and the cost for manufacturing is required. And there was a problem that processing time and process increased.

  Therefore, in the present invention, there is no need to prepare a separate member (such as a connection fitting) to control the swinging of the joined metal parts in the plate thickness direction, and it is not necessary to install this, and the cost for manufacturing can be reduced. The first object of the present invention is to provide a method of joining metal products and metal parts.

  Moreover, in the technique of this patent document 1, it is necessary to crimp using the 3rd metal member, and in the said patent document 3, another metal plate is inserted with respect to the metal plate which performed division by splitting or slitting. Welding and bolting, etc. were necessary. As a result, it takes more time and effort to manufacture, and it becomes difficult to remove the parts after joining. And when it is difficult to remove, only one of the parts is broken, and even if only the broken part needs to be replaced, it becomes difficult to cope with it, so the problem of being limited to semi-permanent fastening applications there were. In addition, when using bolting and riveting, since bolts and rivets are provided to project from the product plane, there are surfaces that are difficult to use depending on the appearance requirements and space requirements in the installation part, There is also a possibility that the usage will be limited.

  Therefore, in the present invention, there is no need to perform caulking or the like for joining, and it is possible to reduce the time and effort required for manufacturing as much as possible, and the joining portion does not protrude from the product plane and can be easily removed. A second object is to provide a method of joining products and metal parts.

  Furthermore, in the technique of Patent Document 2, it has been necessary to bend the metal frame material along the V-shaped notch. However, by forming a V-shaped notch, an extremely thin portion of the plate thickness is bent, and the strength of the member is reduced. There was a risk of damage.

Therefore, in the present invention, it is possible to provide a metal product and a method of joining metal parts that can minimize the possibility of breakage or damage during joining or after joining without decreasing the strength of the parts when joining. The third task is

  In order to solve at least one of the above problems, according to the present invention, a metal product which can eliminate or control swinging in the width direction and the thickness direction without using another member (connecting fitting etc.) in joining. Provided is a method of joining metal parts.

  That is, the present invention is a metal product in which opposing ends of a metal component are joined, and each of the joined ends is provided with a “protrusion or a protrusion for controlling the swing in the width direction at the time of joining”. At least one or more of each of a concave portion joined to the convex portion and a locking piece for controlling swinging in the thickness direction at the time of joining or a groove portion for receiving the locking piece The present invention provides a metal product and a method of bonding metal parts characterized by In addition, "joining" means joining in a contact state regardless of whether or not joining, and "joining" means joining regardless of whether they are in contact, but both are "connected" Use in the meaning of

  There is no particular limitation on the types of metals that can be used in the metal product according to the present invention, for example, carbon steels for carbon steel for machine structure and carbon steel for general structure, alloy steels such as chromium steel and nickel steel Steels including cast irons such as malleable cast iron, or non-ferrous metals including copper, aluminum, nickel, alloys, gold, silver, copper, tin, lead, magnesium, titanium, zinc, alloys, etc. can be widely used . In particular, in the present invention, since it is not necessary to melt the joint as in welding, even when steel, aluminum or the like having a high melting point is used, it is possible to reduce the danger associated with heating as much as possible.

  Further, in the metal product according to the present invention, the convex portion at one end is joined or joined to the concave portion at the other end, and the locking piece at one end is a groove at the other end. By connecting to, it is possible to prevent or control the swing in the width direction and the thickness direction (details will be described later). The joining or joining of the ends of the metal parts mentioned here may be the case where the ends of one metal part are joined together in addition to the case where the ends of two metal parts are joined together. . That is, the metal product according to the present invention is a product having a certain length (desirably a long metal product), which is bent in the length direction to form a circular or polygonal annular ring, At the butt end portions, "a convex portion that controls swinging in the width direction at the time of joining or a concave portion joined to the projecting portion", and a lock that controls the swinging in the plate thickness direction at the time of joining It may be a metal product in which at least one piece or groove portion for receiving the relevant locking piece is formed at least one or more. In particular, in the case of such an annular metal product, it is possible to form an annular metal product in which connecting end portions are reliably connected without using screws and without welding. it can. And in the cyclic | annular metal product formed in this way, the connection state of edge parts can be cancelled | released arbitrarily. Therefore, even in the case of discarding due to, for example, the end of the service life, it is possible to release the connection state and make the shape easy to discard.

  In the metal product according to the present invention, since the joining is completed only by fitting the end portions disposed by butting, there is no need to perform caulking, bolting or welding, and the joining operation is easy. It will be easy to cope with mass production of products.

  Further, as described above, in addition to easy joining operation, it is possible to easily remove it even after joining. Thus, the metal product is not limited to the semipermanent fastening application. Therefore, for example, the user of the product may damage only one part, and it is easy to cope with the case where only the damaged part needs to be replaced. In addition, in the mass production process, a defect (appearance defect of single component after bonding) Even when a dimensional defect or the like is found, it is possible to remove the part and take measures such as repair or replacement.

  Furthermore, since the metal product does not require connection parts (or connection fittings) such as bolts and rivets, the cost of the product involved in manufacturing can be reduced as much as possible. In particular, in the metal product according to the present invention, since the connecting parts such as the bolts and the rivets are not used, the joint portion can be made flat, and other members (for example, members related to assembly) and users Even if the vehicle collides with the joint, the possibility of breakage or injury can be reduced as much as possible.

  Here, in the metal product according to the present invention, a specific configuration for controlling the swing in the width direction and the thickness direction will be described.

  In the metal product according to the present invention, each of the end portions to be joined is a “convex portion” or a “concave portion joined to the convex portion” which controls swinging in the width direction at the time of joining, and at the time of joining At least one or more of "locking pieces" for controlling swinging in the thickness direction or "grooves for receiving the locking pieces" is formed. That is, in the case of forming a protrusion for controlling swinging in the width direction at the time of bonding to one end of a metal part, a recess connected to the protrusion is formed at the other end. . Similarly, in the case of forming a locking piece for controlling swinging in the thickness direction at the time of bonding to one end of a metal component, a groove for receiving the locking piece is formed at the other end. Do. Therefore, for example, in the case where one protrusion and one locking piece are formed at one end, the other end has a recess for joining the protrusion and a groove for receiving the locking piece respectively. It can be formed one by one. In addition, when one convex portion and two locking pieces are formed at one end, a groove for receiving one locking portion and a locking piece joined to the convex portion at the other end It is also possible to form two. Furthermore, when one protrusion and one groove are formed at one end, one recess and one locking piece can be formed at the other end.

  The protrusion is provided along the joining direction with respect to one end of the metal component, and is joined to a recess provided at the other end to control swinging in the width direction at the time of joining. can do. The convex portion may be formed in various shapes as long as it protrudes along the bonding direction, but is formed in a shape having a strength that does not cause breakage or damage when joined with the concave portion. Is desirable. For example, the convex portion can be formed as a tongue piece provided so as to protrude from the end in the joining direction, and the protruding tongue piece has a plate shape, a rod shape, a circular shape, or a "V" shape in cross section. Can be formed. And it is possible to control the swing in the width direction by joining the convex portion with a concave portion formed in a shape in which the convex portion is joined to the other end. The concave portion may be formed in a shape in which the convex portions are joined, but in particular, the concave portion is formed in a shape that complements the convex portions and formed so as to be in close contact with each other. The rattling in the direction can be further suppressed, and a configuration in which positional deviation does not easily occur can be obtained.

  In addition, it is desirable to form the protrusion part which spreads to the width direction in the said convex part. This is because, by providing the projection, the ends do not separate even when pulled in the direction opposite to the joining direction, and a stable joining state can be constructed. The projection may be formed, for example, as a tongue that protrudes in the width direction, as long as it can prevent detachment of the ends when pulling in the direction opposite to the joining direction, and the tongue that protrudes in the width direction has a plate shape Alternatively, it may be formed in a rod-like shape, and one or more may be formed on the tip end side, the middle side, or the base end side of the convex portion. In addition, the protrusion may be formed in such a shape as to gradually spread in the width direction from the base end side to the tip end side of the protrusion.

  In addition, when forming the said protrusion part with respect to a convex part, it is desirable to form the protrusion receiving part by which the said protrusion part is engage | inserted with respect to the said recessed part. The protrusion receiving portion may be formed in a shape in which the protrusion is fitted, but in particular, the shape of the protrusion receiving portion is formed in a shape complementary to the protrusion and is formed in close contact with each other. The rattling in the longitudinal direction can be further suppressed, and a configuration in which positional deviation does not easily occur can be obtained. That is, by providing the locking projection with respect to the projection and fitting the projection into the projection receiving portion, the projection is caught and control not only in the width direction but also in the length direction. To make it possible to build a more stable junction state.

  In addition, the locking piece is protruded from one end along the joining direction, and is joined to the groove at the other end to control swinging in the thickness direction at the time of joining. be able to. The locking pieces may be formed in various shapes, as long as they can protrude along the bonding direction and can control swinging in the thickness direction at the time of bonding. For example, the locking piece can be formed as a tongue piece projecting in the joining direction, and the longitudinal cross-sectional shape along the thickness direction is formed in a "U" shape, a "U" shape, or a "V" shape However, in the present invention, it is desirable that the longitudinal cross-sectional shape be formed in a "V" shape. This is because the locking piece is formed such that the longitudinal cross-sectional shape protrudes in a "V" shape in the bonding direction, so that the "wedge effect" works when it is bonded to the groove at the other end. This is because a strong and firmly bonded state can be realized in a complementary manner, and swinging in the thickness direction can be effectively controlled. Furthermore, since the "wedge effect" can reduce the friction between the ends, the possibility of breakage or breakage of parts can be effectively reduced. The groove for receiving the locking piece may be formed in a shape that can receive the locking piece, but in particular, the shape of the groove may be a shape that complements the locking pieces (that is, a shape that complements each other). By forming so as to be in close contact with each other, rattling in the thickness direction can be further suppressed, and a configuration in which displacement does not easily occur can be obtained.

  In addition, when forming the said locking piece so that a longitudinal cross-sectional shape may become "V" shape which protrudes in a joining direction, the inclination angle concerning "V" letter inclined to a joining direction is 20 degree-60 degree (More preferably, in the range of 30 degrees to 45 degrees). This is because the rocking in the thickness direction can be effectively controlled by forming the inclination angle applied to the V-shape inclined in the joining direction in the range of 20 degrees to 60 degrees. For example, in the locking piece, when the angle of inclination of the "V" inclined in the joining direction is smaller than 20 degrees, the locking piece may be broken or damaged because the acute angle becomes sharp. The possibility is high. On the other hand, in the locking piece, when the inclination angle applied to the "V" inclined in the joining direction is formed to be larger than 60 degrees, the swing in the plate thickness direction is controlled when joined to the groove. It is because it can not be done and there is a possibility of rattling.

  In addition, although one or more locking pieces are provided at one end, there is no particular limitation on the location and the number of the locking pieces, and for example, one may be provided at the top of the projection and protruding from the starting end, It is also possible to provide one each on both sides of the protrusion and from the start end, or to form the shape of the locking piece directly on the protrusion. However, in the present invention, it is desirable to project the locking pieces on both sides of the projection. This is because the locking pieces are provided on both sides of the projection to prevent the welding operation from being hampered when joining the end portions, and to control the swing in the thickness direction. It is because it can be implemented strongly.

  When forming the end shape of the metal part described above, it can be formed by a method such as cutting using a milling or disc grinder, pressing, laser processing, or extrusion. In the present invention, it is desirable to form using pressing. By forming by press processing, it is possible not only to process thin parts but also to achieve high dimensional accuracy, and also to shorten processing time. In particular, by processing using a press with various processing speeds and operation mode capabilities, it is possible to effectively ensure the accuracy and to suppress the occurrence of burrs, and the plate thickness is from a minimum of 1 mm to a maximum of 10 mm or more. It also becomes possible to process metal parts. Therefore, for example, when forming a locking piece with an inclination angle of 30 degrees to 100 degrees applied to the "V" shape inclined in the joining direction with respect to the end of a metal plate having a thickness of 1 mm or less, In addition to being able to process with a dimensional accuracy of ± 0.1 mm tolerance, if using a progressive die, etc., it is possible to effectively reduce the time and cost required to manufacture parts even when mass-producing parts. it can.

  In particular, the locking piece is formed on the end face of the metal product so as to extend and protrude in the direction (width direction) orthogonal to the plate thickness, and this is pressed when forming the convex portion or concave portion It can be formed by The groove for receiving the locking piece may be formed by milling, or may be formed by pressing a jig formed in the same shape as the locking piece. Therefore, the end structure of the metal product of the present invention can simultaneously form the convex portion, the concave portion and the locking piece (as required, the projecting portion and the projecting receiving portion) by press processing. Then, the groove portion may be formed simply by pressing the jig, and the manufacturing process can be simplified.

The metal component formed as described above joins the convex portion at one end to the concave portion at the other end and also bonds the locking piece at one end to the groove at the other end. The bonding method according to the present invention can be obtained. In the joining method according to the present invention, as described above, there is no need to perform caulking or bolting, and joining is completed only by fitting the opposing end portions, so the joining operation is easy and a large amount of products is required. It is easy to cope with production. Therefore, by using the joining method, joining parts of various frames such as building members and members for home appliances (TV etc.) or members for vehicles, etc., plates of precision instruments formed with a plate thickness of about 1 mm, etc. It can also be used in joints and is not limited to semi-permanent fastening applications. Furthermore, since it is easy to remove the joined parts and to repair or replace them, efficient use of the parts becomes possible.

  In the present invention, the metal product is a metal product in which opposite ends of a metal component are joined, and each of the joined ends is a convex portion for controlling the swing in the width direction at the time of joining or the convex At least one or more of a concave portion joined to the portion, a locking piece for controlling swinging in the thickness direction at the time of bonding, or a groove portion for receiving the locking piece. Metal products and methods of joining metal members.

  In the bonding method of the metal product and the metal member according to the present invention, the bonding is completed only by fitting the end portions, and the rocking in the thickness direction can be effectively controlled by the locking piece. Therefore, in order to control the swinging of the joined metal parts in the plate thickness direction, welding or the like can be made unnecessary without preparing a separate member (for example, connection parts such as bolts and rivets and connection fittings). Therefore, it is possible to reduce the cost and process involved in manufacturing.

  In addition, in the method of joining a metal product and a metal member according to the present invention, there is no need to crimp or bolt, etc., and the joining operation is easy because the joining is completed simply by fitting the end portions together. In addition to reducing the time and effort required for the joint as much as possible, the joint does not protrude from the product plane. In addition to easy joining operation as described above, since the parts can be easily removed even after joining, the metal product is not limited to semipermanent fastening applications.

Furthermore, in the method of joining a metal product and a metal member according to the present invention, there is no need to bend an extremely thin portion of the plate thickness at the time of joining, so that the strength of the parts does not decrease in joining. It is possible to minimize the possibility that the parts will be damaged or damaged during or after joining.

It is a figure which shows the joining method of the metal product and metal components concerning this Embodiment, and is a perspective view which shows the end shape of one metal component (A), and the perspective view which shows the end shape of the other metal component (B). The figure, (C) The perspective view which shows the metal product formed by joining the edge parts of two metal components. It is a figure which shows the end shape of one metal component concerning this Embodiment, (A) Top view, (B) Side view. It is a figure which shows the end shape of the other metal parts concerning this Embodiment, (A) Top view, (B) Side view. FIG. 7 is a perspective view showing various end shapes of metal parts according to another embodiment. FIG. 7 is a perspective view showing various end shapes of a metal part according to still another embodiment. It is a figure which shows the end shape of the metal component concerning further another embodiment, (A) Top view, (B) A perspective view. It is a figure which shows the joining method of the conventional metal product and metal components, and is a perspective view which shows the end shape of one metal component (A), the perspective view which shows the end shape of the other metal component (B), (C 2.) A perspective view showing a metal product formed by joining the end portions of two metal parts, (D) a perspective view showing displacement of parts when rocked in the thickness direction, (E) rocking in the length direction The perspective view which shows the shift of the part at the time of making it move.

  Hereinafter, the method of joining metal products and metal parts according to the present embodiment will be specifically described with reference to the drawings.

  As shown in FIGS. 1 to 3, in the present embodiment, a metal product M is manufactured by joining the end portions of two aluminum metal parts. Specifically, as shown in FIG. 1A and FIG. 2, the protrusion 11 for controlling the swing in the width direction at the time of bonding is joined to the end of one metal component 10 along the bonding direction. The locking piece 12 is provided to control the swinging in the thickness direction at the time of joining. And as shown in FIG. 1 (B) and FIG. 3, the recessed part 21 where the said convex part 11 is engage | inserted with respect to the edge part of the other metal component 20, and the groove part 22 which receives the said locking piece 12 It is formed. In the present embodiment, as shown in FIG. 1C, the convex portion 11 at the end of one metal component 10 is joined to the recess 21 at the end of the other metal component 20, and one metal component is used. The metal product M is manufactured by joining the locking piece 12 at the end of 10 to the groove 22 of the end of the other metal part 20.

  In the present embodiment, the end portions of two metal parts are joined to each other. However, even if the end portions of one metal part are joined to each other, the joint strength is not affected. That is, by using the joining method, the structure according to the present embodiment is formed at the end of one metal part, the metal part is bent in a circular shape or a polygonal shape, and the ends are joined. It is also possible to manufacture metal parts.

  Here, a conventional method of joining metal products M 'and metal parts will be described with reference to FIG. 7 for comparison. In the conventional metal product M ', the convex portion 51 at the end of one metal part 50 shown in FIG. 7A and the recess 61 at the end of the other metal part 60 shown in FIG. By joining, the metal product M 'shown in FIG. 7 (C) is manufactured. However, in the conventional metal product M ', when the product M' oscillates in the thickness direction as shown in FIG. 7 (D), a displacement occurs in the thickness direction and a step is generated. It was dead. Further, as shown in FIG. 7E, when the product M 'is swung in the length direction, there is a problem that a shift occurs in the length direction and a gap is generated. In order to control the swinging in the thickness direction and the length direction, conventionally, means for strengthening the joint by means of welding, bolting, riveting or the like has been used.

  On the other hand, in the method of bonding a metal product and a metal component according to the present embodiment, as shown in FIGS. 1 to 3, in the bonding direction from the end portion, the convex portion 11 in one metal component 10 The tongue is formed as a protruding tongue, and the tongue is shaped like a plate. Further, since the concave portion 21 in which the convex portion 11 in the other metal component 20 is fitted is formed in a shape that complements the convex portion 11, it is possible to effectively suppress the swing in the width direction.

  Further, the protrusion 11 is formed with a protrusion 13 having a shape that gradually widens in the width direction from the base end side to the tip end side of the protrusion 11. Then, by forming the projection receiving portion 23 in which the projection 13 is fitted to the recess 21 and joining the projection 13 and the projection receiving portion 23, even if the projection is pulled in the opposite direction to the joining direction after joining. It reduces the possibility of disengaging the ends and creates a stable bond. That is, by providing the protrusion 13 and inserting the protrusion 13 into the protrusion receiving portion 23, the protrusion 13 is hooked to control swinging not only in the width direction but also in the length direction. This makes it possible to build a more stable junction state.

  Moreover, the locking piece 12 concerning this Embodiment is formed so that a longitudinal cross-sectional shape may become "V" shape which protrudes in a joining direction. This is because the locking piece 12 is formed so as to form a "V" shape in which the longitudinal cross-sectional shape protrudes in the joining direction, and when joining with the groove 22 at the other end, the "wedge effect" The reason is that it is possible to realize a strongly joined state which is complementarily joined, and to effectively control the swing in the thickness direction. Furthermore, since the "wedge effect" can reduce the friction between the ends, the possibility of breakage or breakage of parts can be effectively reduced. The groove 22 for receiving the locking piece 12 is formed in a shape complementary to the locking piece 12 and is formed so as to be in close contact with each other, whereby rattling in the thickness direction can be further suppressed, and the positional deviation It is considered that the composition of

  In particular, in the present embodiment, the locking piece 12 is formed so that the vertical cross-sectional shape becomes a "V" shape projecting in the joining direction, and the inclination angle applied to the "V" letter inclined in the joining direction is 30. In addition to controlling the swinging in the thickness direction effectively, the locking piece 12 is configured to reduce the possibility of causing breakage or breakage as much as possible. Furthermore, when the locking pieces 12 are provided so as to protrude on both sides of the convex portion 11, when joining the end portions, there is no hindrance to the bonding workability, and the swinging of the plate thickness direction The configuration is such that control can be implemented more strongly.

  In addition, in forming the end shape of the metal part according to the present embodiment, the processing is performed by using a progressive feeding servo press machine in a progressive feeding manner. By processing using the servo press, stable forming effects can be obtained, and at the same time the generation of burrs can be effectively suppressed, and when mass production of parts is carried out by adopting a progressive die. Can also effectively reduce the time and cost involved in part production.

  As described above, in the method of joining the metal product M and the metal part according to the present embodiment, since there is no need to melt the joint as in welding, even when using steel or aluminum having a high melting point, The hazards associated with heating can be minimized.

  In addition, since the joining is completed only by fitting the opposing end portions, there is no need to crimp or bolt, etc., the joining operation is easy, and it is easy to cope with mass production of products. Become. In particular, in addition to easy joining operation, the metal product M is not limited to a semipermanent fastening application because the metal product M can be easily removed after joining.

  Furthermore, in the said metal product M, since connection parts (or connection metal fittings), such as a volt | bolt and a rivet, are not required, the cost of the product concerning manufacture can be reduced as much as possible. In particular, in the metal product M according to the present embodiment, since the connection parts such as the bolts and the rivets are not used, the joint portion can be made flat, and other members (for example, members related to assembly) Also, even if the user collides with the joint, the possibility of breakage or injury can be reduced as much as possible.

  In addition, as shown in FIG.4, FIG5 and FIG.6, it can form variously as an edge part shape of a metal component. For example, as shown in FIG. 4A, the protrusion 13 of one metal component 10 is formed as a plate-like tongue piece protruding in the width direction, and provided on both sides with respect to the middle side of the protrusion 11. The protrusion receiving portion 23 of the other metal component 20 can be formed in a shape that complements the protrusion 13. In addition, although the said convex part 11 is formed in the substantially-central position of the width | variety of one metal component 10 in FIG. 4 (A), you may make the center position of the convex part 11 eccentrically left or right either. Absent. This is an effective means, for example, when it is desired to secure a space such as a wire on either the left or the right.

  Alternatively, as shown in FIG. 4B, the protrusion 13 is formed as a plate-like tongue piece protruding in the width direction, and a plurality of protrusions 13 are provided on both sides with respect to the tip end side, the middle side, and the base end side. It can also be provided individually. By providing a plurality of protrusions 13, it is possible to further suppress the swing in the length direction, and it is also possible to effectively reduce the possibility of breakage or breakage of the protrusions 13.

  Furthermore, as shown in FIG. 4C, the protrusion 13 is formed as a tongue piece protruding in the width direction, and the tongue piece protruding in the width direction is formed so that the cross-sectional shape becomes a "V" shape. A plurality of projections 11 can be provided so as to be arranged from the distal end side to the proximal end side of the convex portion 11. By forming the projecting portion 13 as described above, the “wedge effect” works when bonding to the recess 21 at the other end, and a strong bonding state which is complementarily in close contact can be realized. Rocking in the longitudinal direction can be effectively controlled.

  Alternatively, as shown in FIG. 5A, the groove 22 may be provided directly on the tip end side of the convex portion 11. That is, in addition to providing the locking pieces 12 on both sides of the protrusion 11, the groove 22 is provided on the tip end side of the protrusion 11, while the locking pieces 12 fitted in the grooves 22 in the recess 21 are protruded By providing the connector, it is possible to more reliably suppress the swing in the thickness direction, and a stable bonding state can be constructed. That is, by realizing the engagement between the locking piece and the groove on both the distal end side and the proximal end side of the convex portion, it is possible to eliminate the displacement in the thickness direction and to make the joint flat.

  Moreover, in FIG. 5 (B), the convex part 11 is formed in the edge part in one metal component 10, The perspective view which formed not the edge part side which has the convex part 11 but the latching piece 12 the other edge part side Figure is shown. That is, in this case, the projection 11 formed at the end of one metal component 10 and the recess 21 at the other end are joined, and the engagement formed at both sides of the recess 21 at the other end By joining the stop piece 12 to the groove part 22 formed in the both sides of the convex part 11 in one edge part, it becomes a form where components are joined.

Furthermore, in FIG. 6 (A), a plan view in the case where the locking piece 12 is provided so as to project from the top end of the convex portion 11 from one end to one end, and FIG. 6 (B) is that case Shows a perspective view of That is, in this case, which is effective when the plate thickness of the metal part is thick, etc., it is not necessary to form the convex portion 11 thick, and it is possible to connect to weight reduction of the product.

M metal products
10 One metal part
11 convex part
12 Locking pieces
13 projections
20 The other metal part
21 recess
22 Groove
23 Projection receiver

Claims (4)

A metal product in which opposing ends of metal parts are joined together,
Each of the end portions to be joined is a convex portion for controlling swinging in the width direction at the time of joining or a concave portion joined to the projecting portion, and a lock for controlling the swinging in the thickness direction at the time of joining A metal product characterized in that at least one or more of a piece or a groove for receiving the locking piece is formed. 2. The metal product according to claim 1 , wherein the locking piece is formed in a “V” shape whose longitudinal cross-sectional shape protrudes in the joining direction, and is provided protruding on both sides of a convex portion. A joining method in which opposing end portions of a metal component are joined together,
A convex portion for controlling swinging in the width direction at the time of joining and provided at one end portion is joined with a concave portion into which the convex portion formed at the other end portion is fitted.
A locking piece for controlling the swinging in the thickness direction at the time of joining, which is provided in a protruding manner at one end, and a groove portion for receiving the locking piece formed at the other end are joined. Characterizing the bonding method. A metal working method for forming an end shape of a metal part according to any one of claims 1 or 2 ;
The metal working method characterized in that the locking piece is processed using a press.