Fitting fixture and assembly member using same

Abstract

To provide a new fixing tool which can improve the appearance and can easily fix two objects. [Solution] A fitting fixture 10 for fixing 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, wherein the first fitting member 11 has a main body 16 with a flat side surface 15 and a protrusion 17 protruding from the leading end of the side surface 15 in the insertion direction, and the second fitting member 12 is a component having a hollow portion 22 with a hollow portion main body 24 into which the first fitting member 11, having a flat side surface 23, can be inserted, and a protrusion insertion gap 25 protruding from the rear end of the side surface 23 in the insertion direction, and when fixing the first and second objects 13, 14, the protrusion 17 of the first fitting member 11 is housed within the protrusion 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 abutted against each other.

Description

[Technical Field]

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

[0002] BACKGROUND ART Conventionally, for example, wooden furniture made up of a plurality of wooden members has been manufactured by connecting the wooden members together using connecting metal fittings or wood screws (see, for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-61215 [Patent Document 2] Japanese Patent Application Laid-Open No. 2011-163364 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when fastening using metal fittings, the metal fittings, which are made of a different material from the wooden furniture, are exposed to the outside, which causes problems such as poor appearance and complicated fastening work.On the other hand, when fastening using wood screws, which are made of the same material as the wooden furniture, the appearance is good, but the fastening work is complicated.

[0005] An object of the present invention is to provide a novel fastener that can have a good appearance and can easily fasten two objects together. [Means for solving the problem]

[0006] As a result of intensive research into solving the above-mentioned problems, the inventors found that the above-mentioned problems can be solved by attaching a hook-shaped first fitting member, which has a main body with a flat side and a protrusion protruding from the end of the side in the insertion direction, to the joining surface of the first object, and embedding a second fitting member, which has a cavity into which the first fitting member can be inserted, and this cavity has a cavity main body with a flat side into which the first fitting member can be inserted and a protrusion insertion gap protruding from the rear side of the side in the insertion direction, in the joining surface of the second object, and inserting the first fitting member into the cavity of the second fitting member, so that the protrusion of the first fitting member is housed in the protrusion insertion gap of the second fitting member and the flat side of the first fitting member is abutted against the flat side of the second fitting member, thereby completing the present invention.

[0007] That is, the present invention is as follows. [1] A first fitting member attached to a joining surface of a first object; a second fitting member that is embedded in the joining surface of the second object and has a cavity into which the first fitting member can be inserted; A fitting fixture for fixing the first object and the second object, comprising: the first fitting member is a hook-shaped member including a main body having a flat side surface and a protrusion protruding from the side surface of the main body in the insertion direction, the second fitting member is a member in which the hollow portion includes a hollow portion main body having a flat side surface into which the first fitting member can be inserted, and a protrusion insertion gap protruding from the inner side of the side surface of the hollow portion main body in the insertion direction, 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 hollow portion of the second fitting member, and then the protrusion of the first fitting member and the protrusion insertion gap of the second fitting member are moved relatively and close to each other, so that the protrusion of the first fitting member is stored in the protrusion insertion gap of the second fitting member and the flat side of the first fitting member is abutted against the flat side of the second fitting member.

[0008] [2] A fitting fixture as described in [1] above, characterized in that the protrusion surface from the side surface of the first fitting member to the tip is a convex inclined surface, and the protrusion insertion gap surface from the side surface of the second fitting member to the innermost position in the insertion direction is a concave inclined surface corresponding to the surface shape of the convex inclined surface.

[0009] [3] The fitting fixture according to [1] or [2] above, further comprising a fixing member that maintains 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 second fitting member in an embedded state, The second fitting member has a through hole formed therein through which the rod can be inserted parallel to a flat side surface of the second fitting member, The fitting fixture according to [3] above, characterized in that when the rod is inserted into the through hole, the rod comes into contact with the back surface of the first fitting member opposite the protrusion. [5] The fitting fixture described in [4] above, characterized in that a groove portion is formed on the back surface of the first fitting member, which can be aligned with the through hole of the second fitting member and follows the surface shape of the rod material inserted into the through hole.

[0010] [6] A fitting fixture according to any one of [1] to [5] above, wherein the first fitting member and the second fitting member are integrally formed by a 3D printer.

[0011] [7] A combined member using the fitting fixture according to any one of [1] to [6] above, the first object having the first fitting member attached to a joining surface; the second object having the second fitting member embedded in a joining surface; A combination member comprising: [8] The combined member according to [7] above, wherein the first fitting member is rotatably attached to the joining 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 have a good appearance and can easily fasten two objects together. [Brief explanation of the drawings]

[0013] [Figure 1] 10(a) to 10(c) are explanatory views illustrating how a first object and a second object of a combined member are fastened together using a fitting fastener according to one embodiment of the present invention. [Figure 2] 10(a) to 10(d) are respectively a front view, a side view, a rear view, and a bottom view of the first fitting member attached to the joining surface of the first object of the assembled member. [Figure 3] 10(a) to 10(d) are respectively a front view, a side view, a rear view, and a bottom view of the second fitting member embedded in the joining surface of the second object of the assembled member. [Figure 4] 10(a) and 10(b) are explanatory views of the combined member when a first object and a second object are fixed together. [Figure 5] FIG. 10 is an explanatory diagram of a baby bed constructed of assembled parts using interlocking fixtures. [Figure 6] FIG. 10 is a front view of the front and rear frames with the first fitting members attached to the joining surfaces. [Figure 7] 10(a) and 10(b) are a front view and a side view, respectively, of a side frame in which a second fitting member is embedded in a joining surface. DETAILED DESCRIPTION OF THE INVENTION

[0014] The fitting and fixing device of the present invention is a fitting and fixing device for fixing a first object and a second object, comprising: a first fitting member attached to a joining surface of a first object; and a second fitting member embedded in a joining surface of a second object and having a cavity into which the first fitting member can be inserted, wherein the first fitting member is a hook-shaped member having a main body with a flat side surface and a protrusion protruding from the leading end of the side surface of the main body in the insertion direction, and the second fitting member has a cavity into which the first fitting member with a flat side surface can be inserted. The member has a hollow body and a protrusion insertion gap protruding from the rear side of the side of the hollow body in the insertion direction, and when fixing the first object and the second object, the first fitting member is inserted into the hollow body of the second fitting member, and then the protrusion of the first fitting member and the protrusion insertion gap of the second fitting member are moved relatively close to each other so that the protrusion of the first fitting member is stored in the protrusion insertion gap of the second fitting member and the flat side of the first fitting member is abutted against the flat side of the second fitting member.

[0015] By using the fitting and fastening device of the present invention, the first and second objects can be easily fastened by storing the protrusion of the first fitting member in the protrusion insertion gap of the second fitting member and abutting the flat side surface of the first fitting member against the flat side surface of the second fitting member. Furthermore, the first and second objects can be easily removed by removing the protrusion of the first fitting member from the protrusion insertion gap of the second fitting member and separating the flat side surfaces of the first and second fitting members. Furthermore, when fastening the first and second objects, the first fitting member attached to the joining surface of the first object is inserted into the cavity of the second fitting member embedded in the joining surface of the second object, so the first and second fitting members are not exposed to the outside, resulting in a good appearance.

[0016] In addition, the combined member of the present invention is a combined member that uses the fitting fixing device of the present invention, and is characterized by comprising a first object having a first fitting member attached to a joining surface, and a second object having a second fitting member embedded in the joining surface.

[0017] The assembled member using the fitting fixture of the present invention is not particularly limited and can be selected appropriately depending on the purpose, and is preferably composed of two or more members that are connected to each other. Examples of such assembled members are preferred components of furniture, toys, etc. Specific examples include shelves such as bookshelves, cupboards, cupboards, and shoe cabinets, storage furniture such as chests of drawers, space-creating furniture such as chairs, desks, and bedding, other furniture such as cribs and dressing tables, and office furniture. Examples of materials for the components include wood, plastic, and metal.

[0018] Each component of the fitting fixture of the present invention will now be described. [First fitting member] The first fitting member is a member that is attached to the joining surface of the first object, and is a hook-shaped member that has a main body with a flat side and a protrusion that protrudes from the side of the main body in the insertion direction.

[0019] (Main body) The main body has a flat side surface (part of the side surface of the main body is flat) on the side surface of a member having, for example, a circular, elliptical, or rectangular cross section, and the end surface on the base side in the insertion direction where there are no protrusions is attached to the joining surface of the first object. The attachment method is not particularly limited, and examples include a method of fixing using a fastener such as a screw member that penetrates the main body in the insertion direction, or a method of fixing with an adhesive.

[0020] The size of the main body can be set appropriately depending on the strength required to secure 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 at the portion without flat sides (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. Furthermore, the height of the main body at the portion with flat sides, i.e., the direction perpendicular to the width of the main body (hereinafter also referred to as the main body height), is preferably 3 to 25 mm, more preferably 5 to 20 mm, and even more preferably 5 to 15 mm. Furthermore, 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 the main body may be inclined, for example, within a range of ±20 degrees, ±10 degrees, or ±5 degrees relative to the insertion direction, but is preferably parallel without any inclination. This flat side surface may be any surface that is considered to be 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 protrusion protrudes laterally from the leading end of the flat side surface of the main body in the insertion direction. The length of the protrusion from the side surface of the main body is not particularly limited as long as it has a predetermined strength and is large enough to fit into the protrusion insertion gap of the hollow portion of the second fitting member described below, and can be set appropriately depending on the size of the object, etc., but 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 protrusion 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 protrusion 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 it is, for example, 10 mm.

[0023] The protrusion surface is preferably a convex slope that bulges outward from the side surface of the first fitting member to the tip. This allows for ease of relative movement and engagement between the contacting convex and concave slopes when the protrusion insertion gap surface of the second fitting member described below is made a concave slope corresponding to the surface shape of the convex slope.

[0024] (Material) The material of the first fitting member may be one having a predetermined strength, such as plastic (synthetic resin) or metal, with plastic being preferable from the viewpoint of weight reduction. Specific examples of plastic include hard vinyl chloride resin, polypropylene resin, hard polyethylene resin, and polylactic acid (PLA), with polylactic acid being preferable.

[0025] [Second fitting member] The second engaging member is a member that is embedded in the joining surface of the second object and has a hollow portion into which the first engaging member can be inserted, the hollow portion comprising a hollow portion main body having a flat side surface into which the first engaging member can be inserted, and a protrusion insertion gap that protrudes from the rear side of the side surface of the hollow portion main body in the insertion direction.

[0026] The second fitting member has, for example, a hollow portion on the front 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 joining surface of the second object so that the end face of this insertion opening is at the same level as the joining surface of the second object or is embedded further inward than the joining surface. The embedding method is not particularly limited, and examples include a method in which a recess corresponding to the external shape of the second fitting member is formed in the joining surface of the second object and the second fitting member is embedded in this recess. Furthermore, examples of a method for attaching the second fitting member to the second object when embedded include a method in which the second fitting member is fixed using a fastener such as a screw member that penetrates from the hollow portion in the insertion direction, or a method in which it is fixed with an adhesive.

[0027] The size of the second fitting member can be appropriately set depending on the strength required to secure the first and second objects and the size of the joining surface of the second object, etc. 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 higher than the height of the first fitting member including the protrusion, and specifically, for example, preferably 50 mm or less, more preferably 40 mm or less, even more preferably 35 mm or less, and especially 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, and specifically, for example, preferably 35 mm or less, more preferably 30 mm or less, even more preferably 25 mm or less, and especially preferably 20 mm or less.

[0028] (Cavity body) The cavity body has a flat side surface into which the first fitting member can be inserted. The cavity body is preferably sized to allow the first fitting member to be inserted therein, specifically, for example, such that the inner width corresponding to the width of the body of the first fitting member has a small gap from the width of the body. Here, the small gap is preferably, for example, 3 mm or less, more preferably 1 mm or less, and even more preferably 0.3 mm or less. The inner width corresponding to the height of the body of the first fitting member is greater than the height of the first fitting member including the protrusions, specifically, for example, 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 cavity body in the insertion direction is preferably approximately the same as the length of the body of the first fitting member in the insertion direction.

[0029] The flat side surface of the cavity main body may be inclined, for example, within a range of ±20 degrees, ±10 degrees, or ±5 degrees relative to the insertion direction, corresponding to the flat side surface of the main body, but is preferably parallel without inclination. This flat side surface may be any surface that is considered to be 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 gap) The protrusion insertion gap protrudes laterally from the innermost side of the side surface of the hollow portion main body in the insertion direction. The protrusion insertion gap protrudes from the side surface of the hollow portion main body to any depth as long as it is large enough to fit onto the protrusion of the first fitting member, and is preferably approximately the same size as the protrusion of the first fitting member. The surface of the protrusion insertion gap is preferably a concave slope that is recessed inward from the side surface of the second fitting member to the innermost position in the insertion direction. This allows the contacting convex and concave slopes to move easily relative to each other and to be easily caught in one another, when the protrusion surface of the first fitting member is a convex slope that corresponds to the surface shape of the concave slope of the protrusion insertion gap.

[0031] (Material) The material of the second fitting member may be the same as or different from that of the first fitting member, but plastic is preferable from the viewpoint of weight reduction. Specific examples of plastic include hard vinyl chloride resin, polypropylene resin, hard polyethylene resin, polylactic acid (PLA), etc., with polylactic acid being preferred.

[0032] (fixing member) The first and second fitting members of the fitting fixture can be fixed, for example, by bonding their flat side surfaces together with an adhesive. However, it is preferable that the fitting fixture further includes a fixing member that maintains the fitted state of the first and second fitting members. This makes it less likely for the first and second fitting members to come apart when fitted together, allowing for a more secure fixation. The fixing member is not particularly limited, and is preferably a rod that can penetrate the second fitting member embedded in the second object. In this case, the second fitting member has a through hole that allows the rod to be inserted parallel to the flat side surfaces of the first and second fitting members. When the rod is inserted into the through hole, the rod comes into contact with the back surface of the first fitting member opposite the protrusion.

[0033] The material of the rod can be one having a predetermined strength, such as wood, metal, or plastic. The rod may be made of the same material as the first and second objects or a different material, although it is preferable that the rod be made of the same material from the viewpoint of appearance. Examples of the rod include round bars and square bars, and 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 the material and the size of the first and second fitting members. Furthermore, it is preferable that the length of the rod is the same as or longer than the thickness of the second object.

[0034] <Method of manufacturing the fitting fixture of the present invention> Next, a method for manufacturing the fitting fixture of the present invention will be described. The first and second fitting members of the fitting fixture are preferably formed as a single unit. Examples of methods for forming the first and second fitting members include a method using a 3D printer to form the first and second fitting members as a single unit, and a method of pouring a material into a mold such as casting or injection molding and then solidifying the material.

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

[0036] Hereinafter, embodiments of the fitting fixture of the present invention will be described in detail with reference to the drawings, but the present invention is not limited to these embodiments.

[0037] 1, a fitting fixture 10 according to one embodiment of the present invention includes a first fitting member 11 and a second fitting member 12. The fitting fixture 10 secures 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, with the second fitting member 12, which is embedded in the joining surface 14a of the second object 14. A combined member 10a using this fitting fixture 10 includes the first object 13 with the first fitting member 11 attached to the joining surface 13a, and the second object 14 with the second fitting member 12 attached to the joining surface 14a.

[0038] As shown in Figures 1 and 2, the first fitting member 11 is a hook-shaped member that includes a main body 16 with a flat side surface 15 and a protrusion 17 that protrudes from the side surface of the main body 16 toward the tip in the insertion direction.

[0039] The main body 16 has a flat side surface 15 formed on the upper side and a semi-cylindrical shape with a through hole 18 formed from the leading end in the insertion direction to the base end, and is attached to the joining surface 13a of the first object 13 by inserting a screw member (not shown) into the through hole 18 from the leading end in the insertion direction and causing it to protrude outward from the base end. This attachment using the screw member is preferably performed so that the main body 16 can rotate freely on the joining surface 13a of the first object 13.

[0040] The protrusion 17 is provided on the upper side of the main body 16, connected to the flat side surface 15, and its surface forms a convex slope 19 consisting 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 protrusion 17 in the insertion direction forms a semi-elliptical flat surface 20 that is continuous with a flat surface 21 at 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 hollow portion 22 into which the first fitting member 11 can be inserted, and this hollow portion 22 is a member that includes a hollow portion main body 24 having a flat side surface 23 into which the first fitting member 11 can be inserted, and a protrusion insertion gap 25 that protrudes from the back side of the side surface of the hollow portion main body 24 in the insertion direction.

[0042] The second fitting member 12 has an insertion opening 26 of the hollow portion 22 formed at a position nearer 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.A screw member (not shown) is inserted from the insertion opening 26 side into a through hole 27 formed at the innermost position of the second fitting member 12 in the insertion direction and protrudes outward, thereby attaching it to the joining surface 14a of the second object 14.

[0043] The protrusion insertion gap 25 is provided on the upper side of the hollow portion main body 24, contiguous with the flat side surface 23, and its surface corresponds to the surface shape of the convex slope 19, i.e., forms a concave slope 28 composed of a gently curved surface recessed inward from the flat side surface 23 of the hollow portion main body 24 to the innermost position. The end face of the protrusion insertion gap 25 at the innermost position in the insertion direction forms a semi-elliptical flat surface 29, which is continuous with a flat surface 30 at the tip end face of the hollow portion main body 24 in the insertion direction.

[0044] 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 joining surface 13a of the first object 13 is inserted into the hollow portion 22 of the second fitting member 12 embedded in the joining surface 14a of the second object 14. Alternatively, the second object 14 may be moved toward the first object 13.

[0045] 1(b), after the first fitting member 11 is inserted into the cavity 22 of the second fitting member 12, the second object 14 is moved downward relative to the first object 13, causing the protrusion 17 of the first fitting member 11 and the protrusion insertion gap 25 of the second fitting member 12 to move relatively closer to each other. This relative movement between the protrusion 17 of the first fitting member 11 and the protrusion insertion gap 25 of the second fitting member 12 can be carried out smoothly due to contact between the convex slope 19 of the protrusion 17 of the first fitting member 11 and the concave slope 28 of the protrusion 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 protrusion 17 of the first fitting member 11 can be stored in the protrusion insertion gap 25 of the second fitting member 12, and the flat side surface 15 of the first fitting member 11 can be abutted against the flat side surface 23 of the second fitting member 12, thereby fixing the first object 13 and the second object 14. When removing the first object 13 and the second object 14, the second object 14 and the first object 13 are moved away from each other. This removal can be performed smoothly due to contact between the convex slope 19 of the protrusion 17 of the first fitting member 11 and the concave slope 28 of the protrusion insertion gap 25 of the second fitting member 12.

[0047] As shown in FIG. 4, the device further includes a rod 31 (fixing member) that maintains the fitted state of the first fitting member 11 and the second fitting member 12 when the first fitting member 11 and the second fitting member 12 are fitted together. The rod 31 can pass through the second fitting member 12 in an embedded state, and the second fitting member 12 has a through hole 32 formed therein through which the rod 31 can be inserted parallel to the flat side surface 23 of the second fitting member 12, and when the rod 31 is inserted into the through hole 32, the rod 31 comes into contact with a back surface 33 opposite the protrusion 17 of the first fitting member 11. The back surface 33 of this first fitting member 11 has a groove 34 formed therein that can be aligned with the through hole 32 of the second fitting member 12 and that follows the surface shape of the rod 31 inserted into the through hole 32, and the surface of the rod 31 comes into contact with this groove 34.

[0048] After the first object 13 and the second object 14 are fixed as shown in FIG. 1(c), a rod 31a is inserted into the through-hole 32 as shown in FIG. 4(a). The length of this 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 length direction of the rod 31a protrude beyond both sides of the second object 14. Note that 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, and only one side in the length direction of the rod 31a may protrude beyond the side surface of the second object 14. 4(b), by cutting off the portion of the rod 31 that protrudes 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 the product quality and appearance. The rod 31 may be fixed with an adhesive.

[0049] This allows the first fitting member 11 to remain pushed up within the hollow portion 22 of the second fitting member 12, maintaining the abutment state between the convex inclined surface 19 of the protrusion 17 of the first fitting member 11 and the concave inclined surface 28 of the protrusion insertion gap 25 of the second fitting member 12, and also maintaining the abutment state between the flat side surface 15 of the first fitting member 11 and the flat side surface 23 of the second fitting member 12, making it less likely that the two will come apart and allowing for a more firmly fixed structure. When removing the first object 13 and the second object 14, the rod 31 is pulled out from the combined member 10a, and then the first object 13 and the second object 14 are pulled in a direction away from each other (outward).

[0050] The first fitting member 11 and the second fitting member 12 are each integrally formed by a 3D printer. Specifically, the first fitting member 11 is formed by layering polylactic acid resin from the leading end (projection side) in the insertion direction to the base side, and the second fitting member 12 is formed by layering polylactic acid resin from the rear side to the front side in the insertion direction. This allows the first fitting member 11 and the second fitting member 12 to be formed efficiently.

[0051] Next, the procedure for assembling a baby bed 50 using the fitting fixture 10 will be described with reference to Figures 5 to 7. The baby bed 50 is a rocking type bed, with a floor board 52 placed on rocking legs 51 placed on the floor, and front and rear frames 53, 54 and side frames 55, 56 erected on all four sides. Here, the assembled members include the front and rear frames 53, 54 as first objects and the side frames 55, 56 as second objects.

[0052] As shown in Fig. 6, first, the first fitting member 11 of the fitting fixture 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 base side in the insertion direction, where the protrusions 17 are not present, is brought into contact with the joining surfaces 57-60 at the four corners of the front frame 53, with the flat side surfaces 15 and the protrusions 17 facing upward, and is fixed with screws through the through holes 18. Here, the first fitting member 11 is rotatably attached to the joining surfaces 57-60 of the front frame 53 with the screws (the same applies to the rear frame 54).

[0053] 7, the second fitting member 12 of the fitting fixture 10 is fixed to a side frame 55 as a second object. Specifically, a recess 62 for embedding the second fitting member 12 is formed in the joining surface 61 of the side portion of the side frame 55 that abuts against the joining surfaces 57, 58 of the front frame 53, and then the back surface of the second fitting member 12 is inserted into and abuts against this recess 62 with the flat side surface 23 and the protrusion insertion gap 25 facing upward, and is fixed with a screw member through the through hole 27 (the same is true for 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 hollow portion 22 of the second fitting member 12 (see FIG. 1(a)). At this time, since the first fitting member 11 is rotatably attached to the joint surfaces 57 to 60 of the front frame 53 with screw members, the first fitting member 11 can be inserted into the hollow portion 22 of the second fitting member 12 while aligning it with the position of the hollow portion 22 of the second fitting member 12. Next, the protrusion 17 of the first fitting member 11 and the protrusion insertion gap 25 of the second fitting member 12 are moved relatively close to each other, and the protrusion 17 of the first fitting member 11 is stored in the protrusion 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 abutted against each other (see Figures 1(b) and (c)).

[0055] Furthermore, the rod 31a is inserted through the embedded second fitting member 12. Specifically, with the groove 34 formed in 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 ends of the rod protruding from both sides in the thickness direction of the side plates 55 and 56, and the protruding portions are cut to fit the surfaces of the side plates 55 and 56. This completes the process of fixing the front and rear frames 53, 54 and the side frames 55, 56 together.

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

[0057] As described above, by using the fitting and fastening device according to one embodiment, the protrusion of the first fitting member is housed in the protrusion insertion gap of the second fitting member, and the flat side surface of the first fitting member is brought into contact with the flat side surface of the second fitting member, thereby easily fastening the first object and the second object. Furthermore, when fastening the first object and the second object, the first fitting member attached to the joining surface of the first object is inserted into the hollow portion of the second fitting member embedded in the joining surface of the second object, so that the first and second fitting members are not exposed to the outside, resulting in a good appearance. [Industrial Applicability]

[0058] INDUSTRIAL APPLICABILITY The present invention can be used as a fastener for fastening two objects together, and is therefore industrially useful. [Explanation of symbols]

[0059] 10: fitting fixture, 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, 16: main body, 17: protrusion, 18: through hole, 19: convex inclined surface, 20, 21: flat surface, 22: hollow portion, 23: flat side, 24: hollow portion main body, 25: protrusion insertion gap, 26: insertion opening, 27: through hole, 28: concave inclined surface, 29, 30: flat surface, 31, 31a: rod, 32: through hole, 33: back surface, 34: groove portion, 50: baby bed, 51: swinging leg portion, 52: floor board, 53: front frame, 54: rear frame, 55, 56: side frames, 57 to 61: joining surface, 62: recess

Claims

1. a first fitting member attached to the joining surface of the first object; a second fitting member that is embedded in the joining surface of the second object and has a cavity into which the first fitting member can be inserted; A fitting fixture for fixing the first object and the second object, comprising: the first fitting member is a hook-shaped member including a main body having a flat side surface and a protrusion protruding from the side surface of the main body in the insertion direction, the second fitting member is a member in which the hollow portion includes a hollow portion main body having a flat side surface into which the first fitting member can be inserted, and a protrusion insertion gap protruding from the inner side of the side surface of the hollow portion main body in the insertion direction, the protrusion surface from the side surface of the first fitting member to the tip is a convex inclined surface, and the protrusion insertion gap surface from the side surface of the second fitting member to the innermost position in the insertion direction is a concave inclined surface corresponding to the surface shape of the convex inclined surface, 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 hollow portion of the second fitting member, and then the protrusion of the first fitting member and the protrusion insertion gap of the second fitting member are moved relatively and close to each other, so that the protrusion of the first fitting member is stored in the protrusion insertion gap of the second fitting member and the flat side of the first fitting member is abutted against the flat side of the second fitting member.

2. a first fitting member attached to the joining surface of the first object; a second fitting member that is embedded in the joining surface of the second object and has a cavity into which the first fitting member can be inserted; a fixing member that maintains the first fitting member and the second fitting member in a fitted state; A fitting fixture for fixing the first object and the second object, comprising: the first fitting member is a hook-shaped member including a main body having a flat side surface and a protrusion protruding from the side surface of the main body in the insertion direction, the second fitting member is a member in which the hollow portion includes a hollow portion main body having a flat side surface into which the first fitting member can be inserted, and a protrusion insertion gap protruding from the inner side of the side surface of the hollow portion main body in the insertion direction, When fixing the first object and the second object, the first fitting member is inserted into the hollow portion of the second fitting member, and then the protrusion of the first fitting member and the protrusion insertion gap of the second fitting member are moved relatively and brought close to each other, so that the protrusion of the first fitting member is housed 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 brought into contact with each other, thereby fitting the first fitting member and the second fitting member together. A fitting fixture characterized by:

3. 3. A fitting fixture according to claim 2, characterized in that the protrusion surface from the side surface of the first fitting member to the tip is a convex inclined surface, and the protrusion insertion gap surface from the side surface of the second fitting member to the innermost position in the insertion direction is a concave inclined surface corresponding to the surface shape of the convex inclined surface.

4. the fixing member is a rod that can penetrate the second fitting member in an embedded state, The second fitting member has a through hole formed therein through which the rod can be inserted parallel to a flat side surface of the second fitting member, 3. The fitting fixture according to claim 2, wherein when the rod is inserted into the through hole, the rod contacts a rear surface of the first fitting member opposite the protrusion.

5. 5. The fitting fixture according to claim 4, characterized in that a groove portion is formed on the back surface of the first fitting member so that it can be aligned with the through hole of the second fitting member and that follows the surface shape of the rod material inserted into the through hole.

6. A combined member using the fitting fixture according to claim 1 or 2, the first object having the first fitting member attached to a joining surface; the second object having the second fitting member embedded in a joining surface; A combination member comprising:

7. 7. A combination member according to claim 6, wherein the first fitting member is rotatably attached to the joining surface of the first object by a screw member.

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