Fitting fastener and combination member using the same

Abstract

To provide a novel fastening device that offers a good appearance while easily securing two objects. [Solution] The fitting and fixing device 10 fixes a first object 13 to which a first fitting member 11 is attached and a second object 14 to which a second fitting member 12 is embedded. The first fitting member 11 comprises a body 16 having a flat side surface 15 and a projection 17 protruding from the insertion direction forward side of the side surface 15. The second fitting member 12 is a member having a hollow part 22 which comprises a hollow body 24 into which the first fitting member 11 having a flat side surface 23 can be inserted, and a projection insertion gap 25 protruding from the insertion direction backward side of the side surface 23. When fixing the first and second objects 13 and 14, the projection 17 of the first fitting member 11 is housed in the projection insertion gap 25 of the second fitting member 12, and the flat side surface 15 of the first fitting member 11 and the flat side surface 23 of the second fitting member 12 are brought into contact.

Description

Technical Field

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[0001] The present invention relates to a fitting fixture for fixing two objects (members) and a combined member using the same.

Background Art

[0002] Conventionally, for example, wooden furniture composed of a plurality of wooden members has been manufactured by connecting these wooden members using connecting metal fittings or wood screws (see, for example, Patent Documents 1 and 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] Here, when fixing using a connecting metal fitting, since the connecting metal fitting, which is a different material from the wooden furniture, is exposed to the outside, there are problems that the appearance is deteriorated and the work at the time of fixing is complicated. On the other hand, when fixing using a wood screw, since it is the same material as the wooden furniture, although the appearance is good, there is a problem that the work at the time of fixing is complicated.

[0005] An object of the present invention is to provide a novel fixture that can improve the appearance and easily fix two objects.

Means for Solving the Problems

[0006] <000003,5>As a result of diligent research to solve the above problems, the present inventors have found that the above problems can be solved by attaching a hook-shaped first fitting member, which has a body with a flat side surface and a projection protruding from the insertion direction end of the side surface, to the joining surface of a first object, and by embedding a second fitting member, which has a cavity into which the first fitting member can be inserted, in the joining surface of a second object, which has a cavity body into which the first fitting member with a flat side surface can be inserted and a projection insertion gap protruding from the insertion direction end of the side surface, and by inserting the first fitting member into the cavity of the second fitting member, housing the projection of the first fitting member in the projection insertion gap of the second fitting member, and bringing the flat side surface of the first fitting member into contact with the flat side surface of the second fitting member, the present inventors have found that the above problems can be solved, and have completed the present invention.

[0007] In other words, the present invention is as follows: [1] A first fitting member attached to the joint surface of the first object, A second fitting member is embedded in the joint surface of the second object, and is provided with a cavity into which the first fitting member can be inserted, A fitting and fixing device for fixing the first object and the second object, comprising: The first fitting member is a hook-shaped member comprising a body having a flat side surface and a projection protruding from the insertion direction forward side of the side surface of the body. The second fitting member is a member in which the cavity comprises a cavity body into which the first fitting member having a flat side surface can be inserted, and a projection insertion gap protruding from the inner side in the insertion direction of the side surface of the cavity body. A fitting and fixing device characterized in that, when fixing the first object and the second object, the first fitting member is inserted into the cavity of the second fitting member, and then the projection of the first fitting member and the projection insertion gap of the second fitting member are moved relative to each other to bring them closer together, so that the projection of the first fitting member is housed in the projection insertion gap of the second fitting member, and the flat side surface of the first fitting member and the flat side surface of the second fitting member come into contact with each other.

[0008] [2] The fitting and fixing device according to [1] above, characterized in that the surface of the projection from the side to the tip of the first fitting member is a convex slope, and the surface of the projection insertion gap from the side to the innermost position in the insertion direction of the second fitting member is a concave slope corresponding to the surface shape of the convex slope.

[0009] [3] The fitting and fixing device according to [1] or [2] above, further comprising a fixing member for maintaining the fitted state of the first fitting member and the second fitting member when the first fitting member and the second fitting member are fitted together. [4] The fixing member is a rod that can penetrate the embedded second fitting member, The second fitting member has a through hole formed therein that allows the rod to be inserted parallel to the flat side surface of the second fitting member. The fitting and fixing device according to [3] above, characterized in that when the rod is inserted into the through hole, the rod contacts the back surface of the first fitting member opposite to the projection. [5] The fitting fastener according to [4] above, characterized in that the back surface of the first fitting member is formed with a groove that conforms to the surface shape of the rod inserted through the through hole, and that can be aligned with the through hole of the second fitting member.

[0010] [6] The fitting fastener according to any one of [1] to [5] above, characterized in that the first fitting member and the second fitting member are each integrally fabricated by a 3D printer.

[0011] [7] A combination member using a fitting fastener as described in any of [1] to [6] above, The first fitting member is attached to the joint surface of the first object, The second fitting member is embedded in the joint surface of the second object, A combination member characterized by having the following features. [8] The combination member according to [7] above, characterized in that the first fitting member is rotatably attached to the joint surface of the first object by a screw member. [Effects of the Invention]

[0012] The fitting fixture of the present invention and the combined member using the same can improve the appearance and can easily fix two objects.

Brief Description of the Drawings

[0013] [Figure 1] (a) to (c) are explanatory diagrams when fixing the first object and the second object of the combined member using the fitting fixture according to an embodiment of the present invention. [Figure 2] (a) to (d) are respectively the front view, side view, rear view, and bottom view of the first fitting member attached to the joint surface of the first object of the same combined member. [Figure 3] (a) to (d) are respectively the front view, side view, rear view, and bottom view of the second fitting member embedded in the joint surface of the second object of the same combined member. [Figure 4] (a) and (b) are explanatory diagrams when the first object and the second object of the same combined member are fixed. [Figure 5] It is an explanatory diagram of a baby bed composed of a combined member using a fitting fixture. [Figure 6] It is a front view of the front and rear frames to which the first fitting member is attached to the joint surface. [Figure 7] (a) and (b) are respectively the front view and side view of the side frame in which the second fitting member is embedded in the joint surface.

Embodiments for Carrying Out the Invention

[0014] The fitting fixture of the present invention includes a first fitting member attached to the joint surface of a first object, and a second fitting member provided with a cavity into which the first fitting member can be inserted and embedded in the joint surface of a second object, and is a fitting fixture for fixing the first object and the second object. The first fitting member is a hook-shaped member including a main body having a flat side surface and a protrusion protruding from the front side in the insertion direction of the side surface of the main body. The second fitting member is a member including a cavity main body having a flat side surface into which the first fitting member can be inserted, and a protrusion insertion gap protruding from the back side in the insertion direction of the side surface of the cavity main body. When fixing the first object and the second object, after inserting the first fitting member into the cavity of the second fitting member, the protrusion of the first fitting member and the protrusion insertion gap of the second fitting member are relatively moved and approximated, and the protrusion of the first fitting member is accommodated in the protrusion insertion gap of the second fitting member, and the flat side surface of the first fitting member and the flat side surface of the second fitting member are abutted against each other.

[0015] By using the fitting fixture of the present invention, the protrusion of the first fitting member is accommodated in the protrusion insertion gap of the second fitting member, and the flat side surface of the first fitting member and the flat side surface of the second fitting member are abutted against each other, so that the first object and the second object can be easily fixed. Further, by taking out the protrusion of the first fitting member from the protrusion insertion gap of the second fitting member and separating the flat side surface of the first fitting member and the flat side surface of the second fitting member, it can be easily removed. Furthermore, when fixing the first object and the second object, since the first fitting member attached to the joint surface of the first object is inserted into the cavity of the second fitting member embedded in the joint surface of the second object, the first and second fitting members can be configured not to be exposed to the outside, and the appearance can be improved.

[0016] In addition, the combined member of the present invention is a combined member using the fitting fixture of the present invention, and is characterized by including a first object to which the first fitting member is attached to the joint surface and a second object to which the second fitting member is embedded in the joint surface.

[0017] The combination members using the fitting fastener of the present invention are not particularly limited and can be appropriately selected according to the purpose, and it is preferable that they consist of two or more members connected to each other. Examples of such combination members include components of furniture and toys, and specifically, components of shelves such as bookshelves, cupboards, cupboards, and shoe racks, storage furniture such as chests of drawers, furniture for creating spaces such as chairs, desks, and bedding, other furniture such as cribs and dressing tables, and components of office furniture. Examples of materials for the components include wood, plastic, and metal.

[0018] The following describes each component of the fitting and fastening device of the present invention. [First fitting member] The first fitting member is a member attached to the joining surface of the first object, and is a hook-shaped member comprising a body having a flat side surface and a projection protruding from the insertion direction forward side of the side surface of the body.

[0019] (Main unit) The main body has a flat side (a part of the side of the main body is flat) on the side of a member with a circular, elliptical, or rectangular cross-section, and the end face on the insertion side, which does not have any protrusions, is attached to the joint surface of the first object. The attachment method is not particularly limited and can be, for example, fixed using a fastener such as a screw member that penetrates the main body in the insertion direction, or fixed with an adhesive.

[0020] The size of the main body can be appropriately set according to the strength required to fix the first and second objects, and the size of the joining surface of the first object. Specifically, for example, the width of the main body in the part without flat sides (the maximum width in the direction perpendicular to the insertion direction) is preferably 5 to 30 mm, more preferably 8 to 25 mm, and even more preferably 10 to 20 mm. The height of the main body in the part with flat sides, i.e., the height of the main body in the direction perpendicular to the width of the main body (hereinafter also referred to as the height of the main body), is preferably 3 to 25 mm, more preferably 5 to 20 mm, and even more preferably 5 to 15 mm. The length of the main body in the insertion direction is preferably 5 to 30 mm, more preferably 8 to 25 mm, and even more preferably 10 to 20 mm.

[0021] The flat side surface of this body may be inclined within a range of ±20 degrees, ±10 degrees, or ±5 degrees with respect to the insertion direction, but it is preferable that it be parallel without inclination. This flat side surface may be a surface that is considered substantially flat, and may be a smooth surface or a surface with many minute irregularities formed thereon. The width of this flat side is the same as or narrower than the width of the main body, and is preferably 5 mm or more, more preferably 8 mm or more, and even more preferably 10 mm or more. The length of the flat side in the insertion direction is shorter than the length of the main body, and is preferably 3 mm or more, more preferably 5 mm or more, and even more preferably 7 mm or more.

[0022] (protrusion) The projection protrudes laterally from the insertion-direction end of the flat side of the main body. The length of the projection from the side of the main body is not particularly limited as long as it has a predetermined strength and is large enough to fit into the projection insertion gap of the cavity of the second fitting member described later, and can be set appropriately according to the size of the object, etc. Specifically, for example, it is preferably 2 mm or more, more preferably 3 mm or more, and even more preferably 4 mm or more. The width of the projection is the same as or narrower than the width of the main body, specifically for example, it is preferably 5 mm or more, more preferably 8 mm or more, and even more preferably 10 mm or more. Furthermore, the length of the projection in the insertion direction is preferably 2 mm or more, more preferably 3 mm or more, and even more preferably 4 mm or more. There is no particular upper limit, but for example it is 10 mm.

[0023] The projection surface is preferably a convex slope that bulges outward from the side surface to the tip of the first fitting member. This makes it possible to achieve both ease of relative movement and ease of engagement between the contacting convex and concave slopes when the projection insertion gap surface of the second fitting member, described later, is a concave slope corresponding to the surface shape of the convex slope.

[0024] (Material) The material of the first fitting member can be one having a predetermined strength, such as plastic (synthetic resin) or metal, with plastic being preferred from the viewpoint of weight reduction. Specifically, examples of plastics include rigid polyvinyl chloride resin, polypropylene resin, rigid polyethylene resin, and polylactic acid (PLA), with polylactic acid being preferred.

[0025] [Second fitting member] The second fitting member is a member embedded in the joining surface of the second object, having a cavity into which the first fitting member can be inserted, wherein the cavity comprises a cavity body into which the first fitting member can be inserted, having a flat side surface, and a projection insertion gap protruding from the inner side in the insertion direction of the side surface of the cavity body.

[0026] The second fitting member has, for example, a cavity on the near side in the insertion direction where an insertion opening for the first fitting member is formed, and the entire second fitting member is embedded in the joint surface of the second object such that the end face of this insertion opening is at the same level as the joint surface of the second object, or is embedded inward from the joint surface. The embedding method is not particularly limited, and for example, a recess corresponding to the external shape of the second fitting member can be formed in the joint surface of the second object, and the second fitting member can be embedded in this recess. As for the method of attaching the second fitting member to the second object when embedded, examples include fixing the second fitting member using a fastener such as a screw member that penetrates from inside the cavity in the insertion direction, or fixing it with an adhesive.

[0027] The size of the second fitting member can be appropriately set according to the strength required to fix the first and second objects, and the size of the joining surface of the second object. The outer width of the second fitting member corresponding to the width of the main body of the first fitting member is preferably 30 mm or less, more preferably 25 mm or less, and even more preferably 20 mm or less. The height of the second fitting member corresponding to the height of the main body is greater than the height of the first fitting member including the projection, specifically, for example, preferably 50 mm or less, more preferably 40 mm or less, even more preferably 35 mm or less, and particularly preferably 30 mm or less. The length of the second fitting member in the insertion direction is longer than the length of the main body, specifically, for example, preferably 35 mm or less, more preferably 30 mm or less, even more preferably 25 mm or less, and particularly preferably 20 mm or less.

[0028] (Hollow body) The hollow body has a flat side surface into which the first fitting member can be inserted. The hollow body is preferably sized to allow insertion of the first fitting member, specifically, for example, the inner width of the first fitting member corresponding to the width of the body is preferably such that there is a small gap between it and the width of the body. Here, the small gap is preferably 3 mm or less, more preferably 1 mm or less, and even more preferably 0.3 mm or less. Furthermore, the inner width of the first fitting member corresponding to the height of the body is preferably greater than the height of the first fitting member including the protrusion, specifically, for example, preferably 40 mm or less, more preferably 35 mm or less, even more preferably 30 mm or less, and particularly preferably 25 mm or less. The depth of the hollow body in the insertion direction is preferably about the same as the length of the body of the first fitting member in the insertion direction.

[0029] The flat side surface of this cavity body may be inclined with respect to the insertion direction within a range of, for example, ±20 degrees, ±10 degrees, or ±5 degrees, corresponding to the flat side surface of the body, but it is preferable that it be parallel without inclination. This flat side surface may be a surface that is considered substantially flat, and may be a smooth surface or a surface with many minute irregularities formed thereon. The width of this flat side is preferably about the same as the width of the flat side of the main body, and the length of the flat side in the insertion direction is preferably about the same as the length of the flat side of the main body.

[0030] (Protrusion insertion space) The projection insertion gap protrudes laterally from the inner side in the insertion direction of the side surface of the cavity body. The depth of the protrusion from the side surface of the cavity body is not particularly limited as long as it is large enough to fit into the projection of the first fitting member, but it is preferable that it be about the same size as the projection of the first fitting member. The surface of the projection insertion gap is preferably a concave slope that is recessed inward from the side of the second fitting member to the innermost position in the insertion direction. This makes it possible to achieve both ease of relative movement and ease of engagement between the contacting convex and concave slopes when the projection surface of the first fitting member is a convex slope corresponding to the surface shape of the concave slope of the projection insertion gap.

[0031] (Material) The material of the second fitting member may be the same as that of the first fitting member, or it may be a different material. From the viewpoint of weight reduction, plastic is preferred. Specific examples of plastics include rigid polyvinyl chloride resin, polypropylene resin, rigid polyethylene resin, and polylactic acid (PLA), with polylactic acid being preferred.

[0032] (Fixing member) The first and second fitting members of the fitting fastener can be fixed together, for example, by bonding their flat sides together with an adhesive. However, it is preferable that the fitting fastener further includes a fixing member that maintains the fitted state of the first and second fitting members. This makes it more difficult for the first and second fitting members to come apart when fitted together, and allows for a more secure fixation. The fixing member is not particularly limited, but a rod that can pass through the second fitting member embedded in the second object is preferred. In this case, the second fitting member has a through hole through which the rod can be inserted parallel to the flat sides of the first and second fitting members, and when the rod is inserted into the through hole, the rod contacts the back surface of the first fitting member opposite to the projection.

[0033] The material of this rod can be one that has a predetermined strength, such as wood, metal, or plastic. It may be made of the same material as the first and second objects, or it may be made of different materials. From the viewpoint of appearance, it is preferable that it be made of the same material. Examples of rods include round bars and square bars. The diameter (width) of the rod is preferably 1 to 7 mm, more preferably 2 to 5 mm, and even more preferably 3 to 5 mm, depending on its material and the size of the first and second fitting members. It is also preferable that the length of the rod be the same as the thickness of the second object, or longer than the thickness.

[0034] <Method for manufacturing the fitting and fixing device of the present invention> Next, the manufacturing method of the fitting and fastening device of the present invention will be described. Preferably, the first and second fitting members of the fitting fastener described above are formed as a single unit. Methods for integral molding include, for example, integral molding using a 3D printer, or pouring material into a mold and solidifying it, such as casting or injection molding.

[0035] In the case of a method for integrally fabricating the first fitting member using a 3D printer, specifically, for example, it can be formed by layering resin using a 3D printer from the insertion direction forward side (projection side) to the base side. Furthermore, in the case of integrally fabricating the second fitting member using a 3D printer, specifically, for example, it can be formed by layering resin using a 3D printer from the back side in the insertion direction to the front side (insertion opening side).

[0036] The embodiments of the fitting fastener of the present invention will be specifically described below with reference to the drawings, but the present invention is not limited to these embodiments.

[0037] As shown in Figure 1, a fitting and fixing device 10 according to one embodiment of the present invention comprises a first fitting member 11 and a second fitting member 12. The fitting and fixing device 10 fixes the first object 13 and the second object 14 by fitting the first fitting member 11, which is attached to the joining surface 13a of the first object 13, and the second fitting member 12, which is embedded in the joining surface 14a of the second object 14, together. A combined member 10a using this fitting and fixing device 10 comprises a first object 13 to which the first fitting member 11 is attached to the joining surface 13a, and a second object 14 to which the second fitting member 12 is attached to the joining surface 14a.

[0038] As shown in Figures 1 and 2, the first fitting member 11 is a hook-shaped member comprising a main body 16 having a flat side surface 15 and a projection 17 protruding from the insertion-direction end of the side surface of the main body 16.

[0039] The main body 16 has a flat side surface 15 on its upper side and a semi-cylindrical shape with a through hole 18 formed from the leading side in the insertion direction to the base side. The screw member (not shown) is inserted into the through hole 18 from the leading side in the insertion direction and protrudes outward from the base side, thereby attaching it to the joining surface 13a of the first object 13. It is preferable that this attachment using the screw member be carried out so that the main body 16 is rotatable on the joining surface 13a of the first object 13.

[0040] The projection 17 is provided on the upper side of the main body 16, connected to the flat side surface 15, and its surface is a convex slope 19 composed of a gently curved surface that bulges outward from the flat side surface 15 of the main body 16 to the tip. In addition, the tip surface of the projection 17 in the insertion direction is a semi-elliptical plane 20, which is continuous with the plane 21 of the tip surface of the main body 16 in the insertion direction.

[0041] As shown in Figures 1 and 3, the second fitting member 12 is provided with a cavity 22 into which the first fitting member 11 can be inserted. This cavity 22 comprises a cavity body 24 into which the first fitting member 11 can be inserted, which has a flat side surface 23, and a projection insertion gap 25 that protrudes from the inner side in the insertion direction of the side surface of the cavity body 24.

[0042] The second fitting member 12 has an insertion opening 26 of the cavity 22 formed at the front position in the insertion direction, and the entire second fitting member 12 is embedded in the joining surface 14a of the second object 14 so that the end face of this insertion opening 26 is at the same level as the joining surface 14a of the second object 14. The screw member (not shown) is inserted from the insertion opening 26 side into a through hole 27 formed at the innermost position in the insertion direction of the second fitting member 12 and is attached to the joining surface 14a of the second object 14 by protruding outward.

[0043] The projection insertion gap 25 is provided on the upper side of the cavity body 24, connected to the flat side surface 23, and its surface is a concave slope 28, which corresponds to the surface shape of the convex slope 19, that is, it is composed of a gently curved surface that is recessed inward from the flat side surface 23 of the cavity body 24 to the innermost position. In addition, the end face of the projection insertion gap 25 at the innermost position in the insertion direction is a semi-elliptical plane 29, which is continuous with the plane 30 of the front end surface of the cavity body 24 in the insertion direction.

[0044] As shown in Figure 1(a), when fixing the first object 13 and the second object 14, first, the first object 13 is moved toward the second object 14. This movement is performed so that the first fitting member 11 attached to the joint surface 13a of the first object 13 is inserted into the cavity 22 of the second fitting member 12 embedded in the joint surface 14a of the second object 14. Alternatively, the second object 14 may be moved toward the first object 13.

[0045] Next, as shown in Figure 1(b), after inserting the first fitting member 11 into the cavity 22 of the second fitting member 12, the second object 14 is moved downward relative to the first object 13, and the projection 17 of the first fitting member 11 and the projection insertion gap 25 of the second fitting member 12 are moved relatively closer together. This relative movement between the projection 17 of the first fitting member 11 and the projection insertion gap 25 of the second fitting member 12 can be performed smoothly by the contact between the convex slope 19 of the projection 17 of the first fitting member 11 and the concave slope 28 of the projection insertion gap 25 of the second fitting member 12. Alternatively, the first object 13 may be moved upward relative to the second object 14.

[0046] As a result, as shown in Figure 1(c), the projection 17 of the first fitting member 11 can be housed within the projection insertion gap 25 of the second fitting member 12, and the flat side surface 15 of the first fitting member 11 and the flat side surface 23 of the second fitting member 12 can be brought into contact, thereby fixing the first object 13 and the second object 14. When removing the first object 13 and the second object 14, they are removed by moving the second object 14 and the first object 13 in a direction away from each other. This removal can be performed smoothly by the contact between the convex inclined surface 19 of the projection 17 of the first fitting member 11 and the concave inclined surface 28 of the projection insertion gap 25 of the second fitting member 12.

[0047] As shown in Figure 4, when the first fitting member 11 and the second fitting member 12 are fitted together, a rod member 31 (fixing member) is further provided to maintain the fitted state of the first fitting member 11 and the second fitting member 12. The rod 31 is capable of passing through the embedded second fitting member 12. The second fitting member 12 has a through hole 32 through which the rod 31 can be inserted parallel to the flat side surface 23 of the second fitting member 12. When the rod 31 is inserted into the through hole 32, the rod 31 contacts the back surface 33 of the first fitting member 11 opposite to the projection 17. The back surface 33 of the first fitting member 11 has a groove 34 that can be aligned with the through hole 32 of the second fitting member 12 and conforms to the surface shape of the rod 31 inserted into the through hole 32, and the surface of the rod 31 contacts this groove 34.

[0048] As shown in Figure 1(c), after fixing the first object 13 and the second object 14, the rod 31a is inserted into the through hole 32 as shown in Figure 4(a). The length of the rod 31a is longer than the thickness of the second object 14, and when the rod 31a is inserted into the through hole 32, both ends in the longitudinal direction of the rod protrude from both sides of the second object 14. Alternatively, when inserting the rod 31a into the through hole 32, the tip or base end of the rod 31a may be aligned with the side surface of the second object 14, so that only one side in the longitudinal direction of the rod 31a protrudes from the side surface of the second object 14. As shown in Figure 4(b), by cutting off the portion protruding from the second object 14, the length of the rod 31 can be made to match the thickness of the second object 14, thereby improving product quality and appearance. The rod 31 may also be fixed with adhesive.

[0049] As a result, the first fitting member 11 can maintain a state in which it is pushed up within the cavity 22 of the second fitting member 12. This maintains the contact between the convex inclined surface 19 of the projection 17 of the first fitting member 11 and the concave inclined surface 28 of the projection insertion gap 25 of the second fitting member 12, as well as the contact between the flat side surface 15 of the first fitting member 11 and the flat side surface 23 of the second fitting member 12. This makes it difficult for the two to come apart, allowing for a more secure fixation. When removing the first object 13 and the second object 14, the rod 31 is pulled out from the combination member 10a, and then the first object 13 and the second object 14 are pulled in a direction that separates them from each other (outward).

[0050] Furthermore, the first fitting member 11 and the second fitting member 12 are each integrally fabricated using a 3D printer. Specifically, the first fitting member 11 is formed by layering polylactic acid resin from the forward side (projection side) in the insertion direction to the base side using a 3D printer, and the second fitting member 12 is formed by layering polylactic acid resin from the back side in the insertion direction to the front side. This allows for the efficient formation of the first fitting member 11 and the second fitting member 12.

[0051] Next, with reference to Figures 5 to 7, the procedure for assembling the baby crib 50 using the fitting fastener 10 described above will be explained. The baby crib 50 is a type of bed that can be rocked, with a bed base 52 placed on rocking legs 51 positioned on the floor surface, and front and rear frames 53, 54 and side frames 55, 56 erected on all four sides of it. Here, the assembly members consist of the front and rear frames 53, 54 as the first object and the side frames 55, 56 as the second object.

[0052] As shown in Figure 6, first, the first fitting member 11 of the fitting fastener 10 is fixed to the front frame 53, which is the first object. Specifically, the end face of the first fitting member 11 on the insertion direction base side, where the projection 17 does not exist, is brought into contact with the joint surfaces 57-60 at the four corners of the front frame 53, with the flat side surface 15 and the projection 17 facing upwards, and fixed with a screw member through the through hole 18. Here, the first fitting member 11 is rotatably attached to the joint surfaces 57-60 of the front frame 53 by a screw member (the same applies to the rear frame 54).

[0053] Furthermore, as shown in Figure 7, the second fitting member 12 of the fitting fastener 10 is fixed to the side frame 55, which is the second object. Specifically, a recess 62 for embedding the second fitting member 12 is formed in the joint surface 61 of the side of the side frame 55 that abuts against the joint surfaces 57 and 58 of the front frame 53. Then, the back surface of the second fitting member 12 is inserted into this recess 62 with the flat side surface 23 and the projection insertion gap 25 facing upwards, and fixed with a screw member through the through hole 27 (the same applies to the side frame 56).

[0054] Next, the first fitting member 11 and the second fitting member 12 are fitted together to fix the front and rear frames 53, 54 and the side frames 55, 56. Specifically, the first fitting member 11 is inserted into the cavity 22 of the second fitting member 12 (see Figure 1(a)). At this time, since the first fitting member 11 is rotatably attached to the joint surfaces 57-60 of the front frame 53 by screw members, the first fitting member 11 can be inserted into the cavity 22 of the second fitting member 12 while corresponding to the position of the cavity 22 of the second fitting member 12. Next, the projection 17 of the first fitting member 11 and the projection insertion gap 25 of the second fitting member 12 are moved relative to each other to bring them closer together, so that the projection 17 of the first fitting member 11 is housed in the projection insertion gap 25 of the second fitting member 12, and the flat side surface 15 of the first fitting member 11 and the flat side surface 23 of the second fitting member 12 are brought into contact (see Figures 1(b) and (c)).

[0055] Furthermore, the rod 31a is used to penetrate the embedded second fitting member 12. Specifically, with the groove 34 formed on the back surface 33 of the first fitting member 11 and the through hole 32 of the second fitting member 12 aligned, the rod 31a is inserted into the through hole 32, with both sides protruding from both sides in the thickness direction of the side plates 55 and 56, and the protruding portions are cut to match the surface of the side plates 55 and 56. This completes the process of securing the front and rear frames 53 and 54 and the side frames 55 and 56.

[0056] Furthermore, to remove the front and rear frames 53, 54 and the side frames 55, 56, the rod 31 is pulled out, then the front and rear frames 53, 54 and the side frames 55, 56 are separated, and the first fitting member 11 is removed from the hollow portion 22 of the second fitting member 12, thereby allowing for easy removal.

[0057] As described above, by using the fitting and fixing device according to one embodiment, the projection of the first fitting member is housed in the projection insertion gap of the second fitting member, and the first object and the second object can be easily fixed by bringing the flat side surface of the first fitting member into contact with the flat side surface of the second fitting member. Furthermore, when fixing the first object and the second object, the first fitting member attached to the joint surface of the first object is inserted into the cavity of the second fitting member embedded in the joint surface of the second object, so that the first and second fitting members are not exposed to the outside, and the appearance can be improved. [Industrial applicability]

[0058] The present invention is industrially useful because it can be used as a fastening device for fixing two objects together. [Explanation of symbols]

[0059] 10: Fitting fastener, 10a: Combination member, 11: First fitting member, 12: Second fitting member, 13: First object, 13a: Joining surface, 14: Second object, 14a: Joining surface, 15: Flat side surface, 16: Main body, 17: Projection, 18: Through hole, 19: Convex slope, 20, 21: Flat surface, 22: Cavity, 23: Flat side surface, 24: Cavity body, 25: Projection insertion gap, 26: Insertion opening, 27: Through hole, 28: Concave slope, 29, 30: Flat surface, 31, 31a: Rod material, 32: Through hole, 33: Back surface, 34: Groove, 50: Baby bed, 51: Swivel leg, 52: Floor plate, 53: Front frame, 54: Rear frame, 55, 56: Side frame, 57~61: Joining surface, 62: Recess

Claims

1. A first fitting member is attached to the joining surface of the first object, A second fitting member is embedded in the joint surface of the second object, and is provided with a cavity into which the first fitting member can be inserted, A fitting and fixing device for fixing the first object and the second object, comprising: The first fitting member is a hook-shaped member comprising a body having a flat side surface and a projection protruding from the insertion direction forward side of the side surface of the body. The second fitting member is a member in which the cavity comprises a cavity body into which the first fitting member having a flat side surface can be inserted, and a projection insertion gap protruding from the inner side in the insertion direction of the side surface of the cavity body. A fitting and fixing device characterized in that, when fixing the first object and the second object, the first fitting member is inserted into the cavity of the second fitting member, and then the projection of the first fitting member and the projection insertion gap of the second fitting member are moved relative to each other to bring them closer together, so that the projection of the first fitting member is housed in the projection insertion gap of the second fitting member, and the flat side surface of the first fitting member and the flat side surface of the second fitting member come into contact with each other.

2. The fitting and fixing device according to claim 1, characterized in that the surface of the projection extending from the side to the tip of the first fitting member is a convex slope, and the surface of the projection insertion gap extending from the side to the innermost position in the insertion direction of the second fitting member is a concave slope corresponding to the surface shape of the convex slope.

3. The fitting and fixing device according to claim 1, further comprising a fixing member for maintaining the fitted state of the first fitting member and the second fitting member when the first fitting member and the second fitting member are fitted together.

4. The fixing member is a rod that can penetrate the embedded second fitting member, The second fitting member has a through hole formed therein that allows the rod to be inserted parallel to the flat side surface of the second fitting member. The fitting and fixing device according to claim 3, characterized in that when the rod is inserted into the through hole, the rod contacts the back surface of the first fitting member opposite to the projection.

5. The fitting fastener according to claim 4, characterized in that the back surface of the first fitting member has a groove that allows alignment with the through hole of the second fitting member and conforms to the surface shape of the rod inserted through the through hole.

6. The fitting fastener according to claim 1, characterized in that the first fitting member and the second fitting member are each integrally fabricated by a 3D printer.

7. A combination member using the fitting and fixing device described in claim 1, The first fitting member is attached to the joint surface of the first object, The second fitting member is embedded in the joint surface of the second object, A combination member characterized by having the following features.

8. The combination member according to claim 7, characterized in that the first fitting member is rotatably attached to the joining surface of the first object by a screw member.

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