Combination part and packaging box

Abstract

The invention relates to a combined part and a packaging box, which simplify the action of removing the combined part from a plurality of combined parts. The joining component (10) has an insertion part (11), a flange part (12), and clamping parts (13A, 13B). The joining component (10) includes an elastic support portion (15A, 15B) that supports the clamping portion so as to be displaceable in a direction perpendicular to the insertion direction, and a take-out force receiving portion (14) that is connected to the elastic support portion and that receives a take-out force from the clamping portion, the take-out force receiving portion receiving the take-out force from the elastic support portion, and the take-out force receiving portion receiving the take-out force from the elastic support portion. The extraction force receiving portion receives an extraction force in an extraction direction (B) opposite to the insertion direction when the insertion portion is extracted from each of the through holes, and the elastic support portion elastically deforms by the extraction force received by the extraction force receiving portion so as to displace the nip portion into the through holes.

Description

Technical Field

[0001] The present invention relates to a combination part and a packing box. Background Art

[0002] Conventionally, a combination part is known, which includes: an insertion part that is inserted into through holes provided in respective joined members in a state where a plurality of joined members are overlapped with each other; a flange part that is formed on the upstream side in the insertion direction of the insertion part and abuts against the edge of the through hole of the joined member located most upstream in the insertion direction when the insertion part is inserted into each through hole; and a clamping part that clamps a plurality of joined members between the flange part and itself when the insertion part is inserted into each through hole.

[0003] For example, Patent Document 1 discloses a packing box that combines a pallet with a tray and an upper box provided on the upper part thereof by a packing fixture (combination part). In this packing box, through holes formed in the upper side wall of the pallet with a tray and through holes formed in the lower part of the upper box body are arranged to overlap each other, and the pallet with a tray and the upper box are combined by inserting the packing fixture into the two through holes. The packing fixture is composed of a base member and a key member. The base member has a first cylindrical part (insertion part), a jaw part (flange part), and a hooking member (clamping part). The key member is connected to the side surface of the base member through a connecting piece and has a second cylindrical part and a locking claw.

[0004] At the time of combination, first, the first cylindrical part of the base member is inserted into the above two through holes. Then, the key member is rotated by bending the connecting piece and folded back toward the base member side, and the second cylindrical part of the key member is inserted into the inside of the first cylindrical part of the base member. As a result, the hooking member disposed inside the first cylindrical part of the base member is pushed out by the second cylindrical part of the key member and protrudes in a state substantially parallel to the jaw part of the base member. At the same time, the locking claw of the key member is engaged with an engaged part formed on the inner wall of the first cylindrical part of the base member. As a result, with the key member locked to the base member, the side wall of the pallet with a tray and the upper box are clamped between the jaw part and the hooking member, and the pallet with a tray and the upper box are combined.

[0005] On the other hand, at the time of removal, an operator pinches a specified part of the key member with a finger, the key member elastically deforms, and the locking claw of the key member disengages from the engaged part of the base member. Then, while pinching the key member with a finger, by pulling out the second cylindrical part of the key member from the first cylindrical part of the base member, the hooking member is retracted into the inside of the first cylindrical part of the base member. Then, finally, by pulling out the first cylindrical part of the base member from the through hole, the packing fixture is removed, and the combination of the pallet with a tray and the upper box is released.

[0006] In existing joining parts, there is a problem of complex operations when removing or installing the joining parts from multiple parts to be joined.

[0007]

Patent Document 1

[0008] In order to solve the above problems, the joining part of the present invention has an insertion part that is inserted into each through-hole provided in each part to be joined in a state where multiple parts to be joined overlap each other; a flange part that is formed on the upstream side in the insertion direction of the insertion part and abuts against the edge of the through-hole of the part to be joined at the most upstream in the insertion direction when the insertion part is inserted into each through-hole, and a clamping part that clamps the multiple parts to be joined between the clamping part and the flange part when the insertion part is inserted into each through-hole. The joining part is characterized by including an elastic support part that supports the clamping part so as to be displaceable in a direction perpendicular to the insertion direction, and a removal force receiving part that is connected to the elastic support part and receives a removal force in a removal direction opposite to the insertion direction when the insertion part is removed from each through-hole. The elastic support part is elastically deformed by the removal force received by the removal force receiving part so that the clamping part is displaced toward the inside of the through-hole.

[0009] According to the present invention, it is possible to simplify the operations when removing or installing the joining part from multiple parts to be joined. Brief Description of the Drawings

[0010] Figure 1 (a) shows a perspective view of a packaging box in an embodiment, and (b) shows a perspective view of products and the like accommodated inside the packaging box represented by a dashed line.

[0011] Figure 2 Shown is a front perspective view when observing the joining part used in the packaging box from the front side.

[0012] Figure 3 Shown is a rear perspective view when observing the joining part from the rear side.

[0013] Figure 4 Shown is a cross-sectional view of a state where the side wall surface of the outer box and the side wall surface of the pallet constituting the packaging box are joined by the joining part.

[0014] Figure 5 Shown is an explanatory diagram of the operation of the joining part when removing the joining part from the side wall surface of the outer box and the side wall surface of the pallet.

[0015] Figure 6The figure shows an explanatory diagram of the operation of the coupling part when the side wall surface of the outer box and the side wall surface of the pallet are coupled with a coupling part.

[0016] Figure 7 The figure shows a cross-sectional view of an example in which the extraction piece constituting the coupling part is composed of a linear member.

[0017] Figure 8 The figure shows a cross-sectional view of an example in which the extraction piece constituting the coupling part is composed of a curved member convex in the extraction direction.

[0018] Figure 9 The figure shows a cross-sectional view of an example in which the connection position connecting the extraction piece and the elastic support part is set near the downstream in the insertion direction of the elastic support part.

[0019] Figure 10 The figure shows a front perspective view of an example of a coupling part having a separated structure in which the elastic support part can be displaced independently relative to other parts of the base part.

[0020] Figure 11 The figure shows a rear perspective view of an example of a coupling part in which the extraction piece is arranged at a position deviating from the lateral center position of the internal space of the base part.

[0021] Figure 12 The figure shows Figure 11 The front view of the coupling part in the example of

[0022] Figure 13 The figure shows a partial cross-sectional perspective view of an example of a coupling part having no base rear wall part on the rear side of the base part.

[0023] Figure 14 The figure shows a front perspective view of an example of a coupling part provided with a pulling piece on the extraction piece.

[0024] Figure 15 The figure shows a rear view of an example of a coupling part that blocks the entire lateral area on the rear side of the base part with the base rear wall part.

[0025] Figure 16 The figure shows Figure 15 The rear perspective view of the coupling part in the example of

[0026] Figure 17 The figure shows Figure 15 The cross-sectional view of the coupling part in the example of

[0027] Figure 18 The figure shows the front view of an existing packaging fixture in the removed state. DETAILED DESCRIPTION

[0028] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0029] In addition, in the present embodiment, a packaging box for packaging products such as copiers, fax machines, and printers as image forming apparatuses is taken as an example for explanation. However, as long as it is a packaging box formed by combining a plurality of combined components through combining parts, the packaged product is not limited.

[0030] Figure 1 FIG. (a) shows a perspective view of the packaging box in the present embodiment, and FIG. (b) shows a perspective view of the products and the like accommodated inside the packaging box in the present embodiment represented by a dashed line.

[0031] The packaging box 1 of the present embodiment is composed of an outer box 20 for packaging in a manner of covering and protecting the periphery other than the bottom surface side of the product 100, and a pallet 30 for holding the product 100 packaged by the outer box 20 and for carrying by a forklift (not shown) or the like. The packaging box 1 places the bottom surface side of the product 100 packaged by the outer box 20 on the pallet 30 to hold the product 100. The outer box 20 and the pallet 30 may also be tied and fixed with a bundling member such as a strip so that the goods do not collapse. The packaging box 1 configured in this way places the pallet 30 on the lower side, or places it on the ground, or performs loading, unloading, and carrying of the goods.

[0032] The outer box 20 is made of a packaging material such as corrugated cardboard (including plastic corrugated cardboard), and is formed in a rectangular box shape with an opening at the bottom. In order to prevent damage to the product 100, the internal volume of the outer box 20 is formed to be a size that can accommodate together with a cushioning material 101 such as polystyrene foam.

[0033] The pallet 30 is disposed on the bottom surface side of the product 100, and is formed with a predetermined thickness in such a manner that the setting surface member 31 facing the ground and the upper surface member 32 on which the product 100 is disposed are provided above and below. A forklift hole 33 is formed between the setting surface member 31 and the upper surface member 32. The forklift hole 33 is used when the pallet 30 is supported and moved by inserting the forklift forks.

[0034] On the pallet 30, at the edge portion of the upper surface 32a of the upper surface member 32 that holds the bottom surface side of the product 100, a side wall surface portion 34 protruding upward is formed so as to surround the upper surface 32a. When the outer box 20 packaging the product 100 is placed on the upper surface 32a of the upper surface member 32, the inner surface of the side wall surface portion 34 of the pallet 30 faces the outer surface near the bottom of the side wall surface portion 21 of the outer box 20. That is, the side wall surface portion 34 of the pallet 30 and the side wall surface portion 21 of the outer box 20 are arranged in an overlapping manner. In addition, it may also be configured such that the outer surface of the side wall surface portion 34 of the pallet 30 faces the inner surface near the bottom of the side wall surface portion 21 of the outer box 20.

[0035] AsFigure 1 As shown, a through-hole 34a is formed in the side wall surface portion 34 of the pallet 30. In addition, as Figure 1 shown, a through-hole 21a is also formed near the bottom of the side wall surface portion 21 of the outer case 20 (the portion overlapping with the side wall surface portion 34 of the pallet 30). These through-holes 21a and 34a are respectively arranged at positions where they overlap with each other when the outer case 20 is properly placed on the upper surface 32a of the upper surface member 32 (when the side wall surface portion 21 of the outer case 20 and the side wall surface portion 34 of the pallet 30 are properly overlapped).

[0036] A coupling member 10 is installed in the overlapping through-holes 21a and 34a. Thus, the side wall surface portion 21 of the outer case 20 and the side wall surface portion 34 of the pallet 30, which are the members to be coupled, are in a state of being interconnected (coupled) to each other through the coupling member 10.

[0037] Next, the coupling member 10 of the present embodiment will be described.

[0038] Figure 2 The figure shows a perspective view of the coupling member 10 of the present embodiment when viewed from the front side.

[0039] Figure 3 The figure shows a perspective view of the coupling member 10 of the present embodiment when viewed from the back side.

[0040] Figure 4 The figure shows a cross-sectional view of the state where the side wall surface portion 21 of the outer case 20 and the side wall surface portion 34 of the pallet 30 are coupled by the coupling member 10.

[0041] The coupling member 10 of the present embodiment is a molded product made of a resin material such as a hard synthetic resin, but there are no particular limitations on the material, manufacturing method, etc. For example, the coupling member 10 can also be a molded product made of a paper material, that is, a material derived from plant fibers. In particular, by forming the coupling member 10 from a paper material, an environmentally friendly coupling member 10 with excellent recyclability can be achieved.

[0042] The coupling member 10 of the present embodiment is an integrally molded product made of a resin material, and it includes a base portion 11 as an insertion portion, a flange portion 12, claw portions 13A and 13B as clamping portions, and a removal piece 14 as a removal force receiving portion.

[0043] The base part 11 is inserted into the through holes 21a and 34a in a state where the side wall surface part 21 of the outer case 20 and the side wall surface part 34 of the pallet 30 overlap each other. The base part 11 has a hollow shape with an internal space that is open on the front side. The base part 11 is provided with base side wall parts 11a and 11a on both sides of the side surface, a base upper wall part 11b on the upper side, a base lower wall part 11c on the lower side, and a base rear wall part 11d as an end wall part on the rear side. The space surrounded by these wall parts 11a to 11d becomes the internal space of the base part 11.

[0044] The flange part 12 is arranged in such a way as to receive the edge of the front opening on the front side (the upstream side in the insertion direction A) of the base part 11, and is a flat plate-like member that extends in a direction substantially parallel to the surface orthogonal to the insertion direction A from the edge of the front opening in a manner of moving away from the front opening. As Figure 4 shown, when the base part 11 is inserted into the through hole 21a of the side wall surface part 21 of the outer case 20 and the through hole 34a of the side wall surface part 34 of the pallet 30, the flange part 12 abuts against the edge of the through hole 34a of the side wall surface part 34 of the pallet 30, which is the joined member on the front side (the most upstream in the insertion direction A).

[0045] Among the claw parts 13A and 13B, the upper claw part 13A is formed so as to protrude from the vicinity of the lateral center of the base upper wall part 11b of the base part 11 toward the rear side (the downstream in the insertion direction A). In addition, the lower claw part 13B is formed so as to protrude from the vicinity of the lateral center of the base lower wall part 11c of the base part 11 toward the rear side (the downstream in the insertion direction A). As Figure 4 shown, in a state where the base part 11 is inserted into the through holes 21a and 34a, the side wall surface part 21 of the outer case 20 and the side wall surface part 34 of the pallet 30 are sandwiched between the folded surface 13A of the claw parts 13A and 13B and the surface of the flange part 12. That is, the function of the claw parts 13A and 13B is to serve as a clamping part that clamps the side wall surface part 21 of the outer case 20 and the side wall surface part 34 of the pallet 30 between itself and the flange part 12.

[0046] In the present embodiment, as Figure 3As shown, on the back wall portion 11d of the base portion 11, at the same lateral position as the positions where the claw portions 13A and 13B are provided, a back opening 11e is formed. Then, since the base portion 11, which is a resin molded product, is an elastic member, the two claw portions 13A and 13B are respectively supported so as to be displaceable in the vertical direction (the direction in which the two claw portions 13A and 13B approach each other). That is, in the present embodiment, the function of the portion of the upper wall portion 11b of the base, which is a side wall portion located at the same lateral position as the position where the upper claw portion 13A is provided, is to serve as an elastic support portion 15A that supports the upper claw portion 13A so as to be displaceable in a direction orthogonal to the insertion direction A (vertical direction). In addition, the function of the portion of the lower wall portion 11c of the base, which is a side wall portion located at the same lateral position as the position where the lower claw portion 13B is provided, is to serve as an elastic support portion 15B that supports the lower claw portion 13B so as to be displaceable in a direction orthogonal to the insertion direction A (vertical direction).

[0047] The function of the extraction piece 14 is to serve as an extraction force receiving portion that receives the extraction force in the extraction direction B, which is the direction opposite to the insertion direction A, when the base portion 11 is extracted from the through holes 21a and 34a. In the present embodiment, an operator inserts a finger through the front opening of the base portion 11 and hooks it onto the extraction piece 14, and pulls the extraction piece 14 in the extraction direction B with this finger, thereby extracting the base portion 11 from the through holes 21a and 34a. Therefore, in the present embodiment, when the extraction piece 14 is pulled in the extraction direction B by the finger of the operator, the pulling force acting on the extraction piece 14 is the above-mentioned extraction force.

[0048] In addition, when the operation of extracting the base portion 11 from the through holes 21a and 34a is automated by a robotic arm, the pulling force acting on the extraction piece 14 when the finger portion of the robotic arm pulls it in the extraction direction B becomes the above-mentioned extraction force.

[0049] In the present embodiment, the upper end portion of the extraction piece 14 is connected to the portion of the upper wall portion 11b of the base, which is located at the same lateral position as the position where the upper claw portion 13A is provided, that is, the portion of the elastic support portion 15A that supports the upper claw portion 13A so as to be displaceable in the vertical direction. In addition, the lower end portion of the extraction piece 14 is connected to the portion of the lower wall portion 11c of the base, which is located at the same lateral position as the position where the lower claw portion 13B is provided, that is, the portion of the elastic support portion 15B that supports the lower claw portion 13B so as to be displaceable in the vertical direction. That is, the extraction piece 14 is provided so as to be connected between the elastic support portion 15A of the upper claw portion 13A and the elastic support portion 15B of the lower claw portion 13B.

[0050] Figure 5The figure shows an explanatory diagram of the operation of the coupling part 10 when removing the coupling part 10 from the side wall surface 21 of the outer box 20 and the side wall surface 34 of the pallet 30.

[0051] In the present embodiment, when removing the coupling part 10 from the side wall surface 21 of the outer box 20 and the side wall surface 34 of the pallet 30, an operator pulls the extraction piece 14 in the extraction direction B with a finger. As a result, as Figure 5 shown, due to this pulling force (extraction force) F, the vicinity of the center in the vertical direction of the extraction piece 14 moves in the extraction direction B. Thereby, forces FA and FB including displacement forces toward the center in the vertical direction of the inner space of the base part 11 act on the upper end part and the lower end part of the extraction piece 14, respectively.

[0052] As Figure 5 shown by the double-dashed line, due to these forces FA and FB, the elastic support part 15A of the upper claw part 13A and the elastic support part 15B of the lower claw part 13B elastically deform so as to displace toward the center in the vertical direction of the inner space of the base part 11. As a result, as Figure 5 shown by the arrow C in, the two claw parts 13A and 13B displace toward the center in the vertical direction of the inner space of the base part 11 (inside the through holes 21a and 34a). Thereby, the claw parts 13A and 13B that sandwich the side wall surface 21 of the outer box 20 and the side wall surface 34 of the pallet 30 between the flange parts 12 retract into the through holes 21a and 34a.

[0053] Then, when the operator directly pulls the extraction piece 14 in the extraction direction B with a finger, the base part 11 is taken out in the extraction direction B from each of the through holes 21a and 34a, the coupling part 10 is removed from the packaging box 1, and the coupling between the outer box 20 and the pallet 30 is released.

[0054] Thus, according to the present embodiment, when removing the coupling part 10 from the packaging box 1, a series of operations from the retraction of the claw parts 13A and 13B to the removal of the base part 11 are completed only by the operator pulling the extraction piece 14 in the extraction direction B with a finger. Therefore, the operation when removing the coupling part 10 from the packaging box 1 can be simplified, and the operability of the operator can be improved.

[0055] Figure 6 The figure shows an explanatory diagram of the operation of the coupling part 10 when coupling the side wall surface 21 of the outer box 20 and the side wall surface 34 of the pallet 30 with the coupling part 10.

[0056] When joining the side wall surface 21 of the outer box 20 and the side wall surface 34 of the pallet 30 using the joining part 10 of the present embodiment, an operator, for example, holds the edge of the flange part 12 with fingers and inserts the base part 11 into the through holes 21a and 34a in a state where the side wall surface 21 of the outer box 20 and the side wall surface 34 of the pallet 30 overlap each other.

[0057] At this time, since the claw parts 13A and 13b protrude more outward than the outer peripheral surface of the base part 11, when the base part 11 is inserted, the inclined surfaces 13b of the claw parts 13A and 13b come into contact with the edge of the through hole 34a of the side wall surface 34 of the pallet 30. However, as Figure 6 shown, when the operator directly pushes the flange part 12 in the insertion direction A with forces F1 and F1, the contact part between the inclined surface 13b of the claw parts 13A and 13b and the edge of the through hole 34a slides along the inclined surface 13b, and due to the force received from the edge of the through hole 34a, the elastic support parts 15A of the claw part 13A and the elastic support part 15B of the lower claw part 13b elastically deform. Therefore, as Figure 6 indicated by the double-dot chain line of

[0058] shown, the two claw parts 13A and 13B are displaced to positions retracted toward the center in the vertical direction of the inner space of the base part 11 (inside the through holes 21a and 34a).

[0059] As a result, the hooking of the claw parts 13A and 13B with respect to the edge of the through hole 34a of the side wall surface 34 of the pallet 30 is released. As a result, when the operator directly pushes the flange part 12 in the insertion direction A, the claw parts 13A and 13B slide on the inner wall surfaces of the through holes 21a and 34a, and the base part 11 is inserted into the through holes 21a and 34a.

[0059] Then, when the base part 11 is inserted until the flange part 12 of the joining part 10 abuts against the edge of the through hole 34a of the side wall surface 34 of the pallet 30, the claw parts 13A and 13B pass through the through holes 21a and 34a. Therefore, as Figure 6 indicated by the arrow D in

[0060] shown, the two claw parts 13A and 13B are displaced outward of the through holes 21a and 34a by the elastic restoring forces of the elastic support part 15A of the upper claw part 13A and the elastic support part 15B of the lower claw part 13B. As a result, the side wall surface 21 of the outer box 20 and the side wall surface 34 of the pallet 30 are sandwiched between the folding surfaces 13A of the claw parts 13A and 13B and the surface of the flange part 12.

[0061] Thus, according to the present embodiment, when the side wall surface portion 21 of the outer box 20 and the side wall surface portion 34 of the pallet 30 are joined using the joining member 10, an operator can complete a series of operations including the retraction of the claw portions 13A and 13B, the insertion of the base portion 11, and the clamping of the claw portions 13A and 13B and the flange portion 12 by simply pushing the flange portion 12 of the joining member 10 in the insertion direction A with a finger. Therefore, the operations when joining using the joining member 10 can be simplified, and the operability of the operator can be improved.

[0062] In addition, the joining member 10 of the present embodiment does not require the key member 202 that is additionally required for the base member 201 inserted through the insertion through-hole in the Figure 18 conventional packaging fixture 200 shown. Therefore, compared with the conventional packaging fixture 200, the projected area of the member when observing the joining member 10 from the front can reduce the area corresponding to the case without the key member 202, and a significant reduction in the amount of material used and a reduction in the size of the manufacturing die can be achieved.

[0063] In the present embodiment, as shown in Figure 4 etc., the removal piece 14 is composed of a curved member that is convex toward the removal direction B. At this time, when removing the joining member 10, it is easy for an operator to hook a finger on the removal piece 14, and the operability is improved. However, the removal piece 14 is not limited to such a shape. For example, as shown in Figure 7 it may also be a removal piece 14' composed of a linear member extending in a direction (here, the vertical direction) orthogonal to the insertion direction A. Additionally, for example, as shown in Figure 8 it may also be a removal piece 14" composed of a curved member that is convex toward the removal direction B.

[0064] In addition, in the present embodiment, as shown in Figure 4 the connection positions (the upper end portion and the lower end portion of the removal piece 14) where the removal piece 14 is connected to the elastic support portions 15A and 15B are provided near the center in the insertion direction of the elastic support portions 15A and 15B (the base upper wall portion 11b and the base lower wall portion 11c), but are not limited to this position.

[0065] For example, as shown in Figure 9 the connection positions (the upper end portion and the lower end portion of the removal piece 14) where the removal piece 14 is connected to the elastic support portions 15A and 15B may be provided downstream in the insertion direction A of the elastic support portions 15A and 15B (the base upper wall portion 11b and the base lower wall portion 11c). According to this configuration, when removing the joining member 10, the force required to displace the two claw portions 13A and 13B toward the center in the vertical direction (inside the through-holes 21a and 34a) of the internal space of the base portion 11 can be reduced ( Figure 5the displacement forces indicated by symbols FA and FB). As a result, when detaching the coupling member 10, since the force (extraction force) F for pulling out the extraction piece 14 can be small, the operability of the operator is improved.

[0066] On the other hand, the connection positions (the upper and lower end portions of the extraction piece 14) where the extraction piece 14 is connected to the elastic support portions 15A and 15B may be provided upstream in the insertion direction A of the elastic support portions 15A and 15B (the base upper wall portion 11b and the base lower wall portion 11c). According to this configuration, since the extraction piece 14 can be located at a position close to the front opening (the opening on the upstream side in the insertion direction A) of the base portion 11, when detaching the coupling member 10, it is easy for the operator to hook a finger on the extraction piece 14, and the operability of the operator is improved.

[0067] In addition, in the present embodiment, the connection positions (the upper and lower end portions of the extraction piece 14) where the extraction piece 14 is connected to the elastic support portions 15A and 15B are provided at overlapping positions that overlap the claw portions 13A and 13B in the lateral direction. Of course, the connection positions (the upper and lower end portions of the extraction piece 14) where the extraction piece 14 is connected to the elastic support portions 15A and 15B may also be provided at non-overlapping positions that do not overlap the claw portions 13A and 13B in the lateral direction. However, by providing them at the overlapping positions as in the present embodiment, when detaching the coupling member 10, compared with the case where they are provided at non-overlapping positions, the force ( Figure 5 the displacement forces indicated by symbols FA and FB) for displacing the claw portions 13A and 13B toward the center in the vertical direction (inside the through holes 21a and 34a) of the internal space of the base portion 11 can be reduced. As a result, when detaching the coupling member 10, since the force (extraction force) F for pulling out the extraction piece 14 can be small, the operability of the operator is improved.

[0068] In addition, in the present embodiment, the elastic support portions 15A and 15B that support the claw portions 13A and 13B are integrally formed with other portions of the base upper wall portion 11b and the base lower wall portion 11c that are side wall portions of the base portion 11, but it is not limited thereto. For example, as Figure 10 shown, the elastic support portions 15A and 15B may also be configured to be displaceable and separable independently of other portions of the base portion 11. Specifically, in the Figure 10 example, separation grooves (long holes) 13c extending in the insertion direction A are provided in the base upper wall portion 11b and the base lower wall portion 11c of the base portion 11, and the portions of the base upper wall portion 11b and the base lower wall portion 11c that constitute the elastic support portions 15A and 15B are configured to be displaceable independently of other portions of the base upper wall portion 11b and the base lower wall portion 11c.

[0069] Thus, if the elastic support portions 15A and 15B are separately formed from the other parts of the base upper wall portion 11b and the base lower wall portion 11c, compared with the case where the elastic support portions 15A and 15B are integrally formed with the other parts of the base upper wall portion 11b and the base lower wall portion 11c, when removing the coupling part 10, the force for displacing the two claw portions 13A and 13B toward the center side in the vertical direction (inside the through holes 21a and 34a) of the inner space of the base portion 11 can be reduced ( Figure 5 the displacement forces indicated by the symbols FA and FB in Figure 5 ). As a result, when removing the coupling part 10, since the force (removal force) F for pulling out the extraction piece 14 can be smaller, the operability of the operator is improved.

[0070] In addition, in the present embodiment, the extraction piece 14 is arranged at the central position in the lateral direction of the inner space of the base portion 11, but it may also be arranged at a position E' deviated from the central position E in the lateral direction of the inner space of the base portion 11 as Figure 11 shown. When the extraction piece 14 is arranged at the central position E in the lateral direction of the inner space of the base portion 11, the side spaces of the extraction piece 14 in the inner space of the base portion 11 are equal on both sides. Therefore, it is possible that either space is too narrow for the operator to insert a finger when removing the coupling part 10.

[0071] On the contrary, in the example where the extraction piece 14 is arranged at a position E' deviated from the central position E in the lateral direction of the inner space of the base portion 11 Figure 11 as Figure 12 shown, it is possible to make the lateral length L2 (for example, 1 cm or more) of one end side of the side space of the extraction piece 14 in the inner space of the base portion 11 longer than the lateral length L1 of the other end side. Thereby, the side space of one end side of the extraction piece 14 in the inner space of the base portion 11 can be enlarged. Therefore, when removing the coupling part 10, it is easy for the operator to insert a finger from the wider space side, and the operability is improved.

[0072] In addition, in the present embodiment, since the folded surfaces 13A of the claw portions 13A and 13B are formed parallel to the surfaces of the flange portion 12, the side wall surface portion 21 of the outer box 20 and the side wall surface portion 34 of the pallet 30 that are parallel to each other can be clamped without a gap. However, in a special case such as when the surface of the side wall surface portion 21 of the outer box 20 and the surface of the side wall surface portion 34 of the pallet 30 are not parallel to each other, the folded surfaces 13a and 13B of the claw portions 13a and 13B and the surfaces of the flange portion 12 can be formed to be non-parallel accordingly.

[0073] In addition, the claw portions 13A and 13b in the present embodiment are provided with inclined surfaces 13b so that when the coupling part 10 is installed, the claw portions 13A and 13b can smoothly move from the edge of the through hole 34a of the side wall surface portion 34 of the pallet 30 into the inside of the through hole 34a. The inclined surface 13b may be a flat surface, but is preferably a curved surface as in the present embodiment. Thereby, when the coupling part 10 is installed, the claw portions 13A and 13B can move more smoothly into the inside of the through hole 34a, and the operability is improved.

[0074] In addition, in the present embodiment, a base back wall portion 11d serving as an end wall portion is provided on the back side of the base portion 11, but as Figure 13 shown, it may also be configured without the base back wall portion 11d. That is, as Figure 13 shown, it may also be configured such that the back side of the base portion 11 is open in the entire area. However, by providing the base back wall portion 11d on the back side of the base portion 11, the opening area downstream in the insertion direction A of the base portion 11 becomes smaller or disappears. Therefore, when using the packaging box 1, it is possible to prevent foreign matter from entering the inside of the packaging box 1 from the outside of the packaging box 1 through the internal space of the base portion 11 of the coupling part 10.

[0075] In addition, the entire area of the back side of the base portion 11 may be blocked by the base back wall portion 11d. However, in this case, the elastic deformation of the base upper wall portion 11b and the base lower wall portion 11c constituting the elastic support portions 15A and 15B will be hindered, and the displacement of the claw portions 13A and 13B will be hindered, which may reduce the operability. Therefore, as Figure 3 shown, preferably as in the present embodiment, in the back side of the base portion 11, the portion located downstream in the insertion direction A of the elastic support portions 15A and 15B is not blocked by the base back wall portion 11d, but a back opening 11e is formed, and only the other portions are blocked by the base back wall portion 11d.

[0076] In addition, as Figure 4 shown, it is preferable that the base back wall portion 11d on the back side of the base portion 11 has a convex shape on the downstream side in the insertion direction A. Thereby, the internal space of the base portion 11 formed inside the base back wall portion 11d can be expanded in the insertion direction. Thereby, since the space for placing the operator's finger on the back side of the extraction piece 14 becomes larger, it is easy for the operator to hook the finger on the extraction piece 14, and the operability is improved.

[0077] In addition, as Figure 14As shown, a pulling piece 16 can also be provided as an extension portion extending upstream from the removal piece 14 in the insertion direction A. Thus, when an operator removes the coupling part 10, by pinching the pulling piece 16 with a finger and pulling it in the removal direction B, the coupling part 10 can be removed in the same manner as described above. Therefore, two removal methods such as a method of hooking a finger on the removal piece 14 to remove it and a method of pulling the pulling piece 16 to remove it can be provided to the operator, improving convenience.

[0078] In addition, as Figure 14 shown, if an anti-slip rib 16a is formed on the pulling piece 16 as an anti-slip portion, the sliding when the operator pulls the pulling piece 16 can be suppressed.

[0079] In addition, the position of the free end of the pulling piece 16 (the position of the end portion on the upstream side in the insertion direction A) can extend upstream in the insertion direction A from the internal space of the base portion 11, or can be within the internal space of the base portion 11.

[0080] In addition, as Figure 15 and Figure 16 shown, the entire lateral region on the back side of the base portion 11 can also be blocked by the base back wall portion 11d. Specifically, the base back wall portion 11d is formed so that when the removal piece 14 is pushed downstream in the insertion direction A by some external force and the removal piece 14 is deformed as shown by the double-dot chain line in Figure 17 , it abuts against the removal piece 14 to form a displacement restricting portion 11f that restricts this displacement. At this time, as Figure 15 and Figure 16 shown, it is preferable to form a back opening 11e at the same position as the lateral position where the claw portions 13A and 13B are provided. Thus, as described above, even if a base back wall portion 11d as a displacement restricting portion is formed across the entire lateral region on the back side of the base portion 11, the displacement of the claw portions 13A and 13B is hardly hindered by the base back wall portion 11d.

[0081] According to Figures 15 - 17 the structure, in a situation where the removal piece 14 is pushed downstream in the insertion direction A and the removal piece 14 is deformed, by the deformed removal piece 14 abutting (coming into contact) against the base back wall portion 11d, excessive deformation or detachment of the removal piece 14, or excessive deformation or detachment of the claw portions 13A and 13B connected to the removal piece 14, etc. are suppressed. For example, Figures 15 - 17 the example in Figure 14 is the same as the above Figures 15 - 17For example, by the contact between the deformed extraction piece 14 and the base back wall portion 11d, it is also possible to suppress excessive deformation or detachment of the extraction piece 14, and excessive deformation or detachment of the claw portions 13A and 13B connected to the extraction piece 14, etc.

[0082] In addition, in the present embodiment, when the side wall surface portion 21 of the outer box 20 and the side wall surface portion 34 of the pallet 30 are joined by the joining member 10, the operator may not use the flange portion 12 of the joining member 10, but instead use a finger to push the extraction piece 14 or the pulling piece 16 in the insertion direction A. With just this one action, a series of joining actions can be completed. In this action, according to Figures 15 - 17 the structure, when the extraction piece 14 or the pulling piece 16 is pushed in the insertion direction A, as Figure 17 shown by the two-dot chain line, the extraction piece 14 deforms in such a way that the downstream side in the insertion direction A becomes convex and contacts the base back wall portion 11d. When the extraction piece 14 deforms to this contact state, it becomes a state where the upper end portion of the extraction piece 14 receives a downward force from the elastic support portion 15A and the lower end portion of the extraction piece 14 receives an upward force from the elastic support portion 15B. As a result, although the extraction piece 14 deforms in the direction in which the convex portion of the extraction piece 14 that is to be convex on the downstream side in the insertion direction A is pressed against the base back wall portion 11d, this deformation is blocked by the base back wall portion 11d. Therefore, when the joining member 10 is joined, if an action of pushing the extraction piece 14 or the pulling piece 16 in the insertion direction A is performed, the extraction piece 14 maintains deformation in the contact state ( Figure 17 the two-dot chain line) where its convex portion contacts the base back wall portion 11d.

[0083] Thus, after the side wall surface portion 21 of the outer box 20 and the side wall surface portion 34 of the pallet 30 are joined by the joining member 10, for example, when transporting the packaging box 1, etc., even when an external force in the direction of retracting the claw portions 13A and 13B is applied, it is possible to suppress the situation where the joining member 10 detaches from the packaging box 1. Specifically, when an external force that retracts such claw portions 13A and 13B is applied, the upper end portion of the extraction piece 14 connected to the upper claw portion 13A and the elastic support portion 15A receives a downward force, and in addition, the lower end portion of the extraction piece 14 connected to the lower claw portion 13B and the elastic support portion 15B receives an upward force. As a result, although the extraction piece 14 deforms in the direction in which the convex portion of the extraction piece 14 that is to be convex on the downstream side in the insertion direction A is pressed against the base back wall portion 11d. However, since this deformation is blocked by the base back wall portion 11, even when an external force that retracts the claw portions 13A and 13B is applied, it is possible to suppress the retraction of the claw portions 13A and 13B and to suppress the situation where the joining member 10 detaches from the packaging box 1.

[0084] The above description is just an example, and the following various methods all have unique effects.

[0085] [First method]

[0086] The coupling part of the first method has an insertion part (for example, the base part 11), which is inserted into the through holes 21a and 34a provided on each of the coupled parts in a state where a plurality of coupled parts (for example, the side wall surface part 21 of the outer box 20 and the side wall surface part 34 of the tray 30) overlap each other; a flange part 12, which is formed on the upstream side in the insertion direction A of the insertion part, and when the insertion part is inserted into the through holes, abuts against the edge of the through hole 34a of the most upstream coupled part (for example, the side wall surface part 34 of the tray 30) in the insertion direction, and a clamping part (for example, claw parts 13A and 13B), which clamps the plurality of coupled parts between the flange part when the insertion part is inserted into the through holes. The coupling part 10 is characterized by including elastic support parts 15A and 15B, which support the clamping part so as to be displaceable in a direction perpendicular to the insertion direction (for example, the up and down direction), and a removal force receiving part (for example, a removal piece 14), which is connected to the elastic support part and receives a removal force F in a removal direction B opposite to the insertion direction when the insertion part is removed from the through holes. The elastic support part is elastically deformed by the removal force received by the removal force receiving part, so that the clamping part is displaced into the interior of the through hole.

[0087] In the case of a conventional coupling part, when removing it, it is removed from the coupled part through three or more operations, that is, an operation of pinching a specified part of the key part with the fingers of an operator to unlock the locking claw; an operation of pulling out the key part from the base part (insertion part) to retract the hooking part (clamping part); and finally an operation of pulling out the base part from the through hole of the coupled part. Therefore, when removing it, a complex operation of multiple operations is required, so for example, the operability of the operator performing the removal is reduced.

[0088] In the joining part of this mode, in a state where a plurality of joined members are overlapped with each other, an insertion part is inserted into each through-hole provided in each of the joined members, and the plurality of joined members are joined by sandwiching the plurality of joined members between a flange part formed on the upstream side in the insertion direction of the insertion part and a clamping part. In the joining part of this mode, the clamping part is elastically supported by an elastic support part so as to be displaceable in a direction perpendicular to the insertion direction. A removal force receiving part is connected to the elastic support part, and the removal force receiving part receives a removal force (for example, a force pulled by an operator's finger in the removal direction) in the removal direction (the direction opposite to the insertion direction) when the insertion part is removed from each through-hole of the plurality of joined members. According to this mode, when removing the joining part, the removal force receiving part receives the removal force, the elastic support part connected to the removal force receiving part elastically deforms, and thereby the clamping part supported by the elastic support part is displaced toward the inside of the through-hole. As a result, the clamping part that sandwiches the plurality of joined members between it and the flange part retracts toward the inside of the through-hole. Further, since the removal force received by the removal force receiving part is in the removal direction, the insertion part is removed from each through-hole of the plurality of joined members by this removal force. As a result, the joining part is removed and the joining of the plurality of joined members is released.

[0089] Thus, according to this mode, when removing the joining part, by applying a removal force in the removal direction to the removal force receiving part, a series of operations from the retraction of the clamping part to the removal of the insertion part are completed. Therefore, the operations during removal can be simplified.

[0090] In addition, according to this mode, it can also be configured that when installing the joining part, by the operation of pushing the insertion part into the through-hole, the elastic support part elastically deforms and the clamping part moves toward the inside of the through-hole, and then, by the restoring force of the elastic support part, the clamping part is in a state of sandwiching the plurality of joined members between it and the flange part. Thus, when installing the joining part, by one operation of pushing the insertion part into the through-hole, a series of operations until the clamping part sandwiches the plurality of joined members between it and the flange part are completed. Therefore, the operations during installation can be simplified. In addition, by completing with one operation of pushing such an insertion part into the through-hole, in the case of automating the installation operation of the joining part by a device such as a robot arm, the operation of the device can be simplified, and it can be realized by a relatively inexpensive device.

[0091] [Second mode]

[0092] The second mode is characterized in that, in the first mode, the insertion part has a hollow shape with an internal space, and the removal force receiving part is arranged in the internal space.

[0093] Accordingly, since at least a part of the extraction force receiving portion is disposed within the internal space of the insertion portion, the coupling member can be miniaturized as compared with the case where the entire extraction force receiving portion is disposed outside the internal space of the insertion portion.

[0094] [Third Mode]

[0095] The third mode is characterized in that, in the second mode, the extraction force receiving portion is disposed at a position E' deviated from the central position E of the internal space in a direction orthogonal to the insertion direction and in a direction orthogonal to the direction in which the elastic support portion of the clamping portion is elastically deformed due to the extraction force and displaced toward the inside of the through hole (for example, the lateral direction).

[0096] Accordingly, the space on one side of the extraction force receiving portion in the internal space of the insertion portion can be enlarged. Therefore, when removing the coupling member, it is easy for an operator to insert a finger or the like from the wider space side, thereby improving the operability.

[0097] [Fourth Mode]

[0098] The fourth mode is characterized in that, in the second or third mode, the elastic support portion constitutes the side wall portion of the insertion portion (for example, the base upper wall portion 11b and the base lower wall portion 11c).

[0099] Accordingly, the configuration of the coupling member can be simplified.

[0100] [Fifth Mode]

[0101] The fifth mode is characterized in that, in the fourth mode, the elastic support portion is configured to be displaceably separable from the other side walls of the insertion portion.

[0102] Accordingly, when removing the coupling member, the force for displacing the clamping portion can be reduced as compared with the case where the elastic support portion is integrally formed with another part of the side wall portion of the insertion portion. Therefore, when removing the coupling member, a smaller extraction force is required to be received by the extraction force receiving portion, thereby improving the operability.

[0103] [Sixth Mode]

[0104] The sixth mode is characterized in that, in the fifth mode, an end wall portion (for example, the base rear wall portion 11d) is formed in the insertion portion, and the end wall portion blocks the downstream side in the insertion direction surrounded by the other side wall portion, so as not to block the downstream side in the insertion direction of the elastic support portion.

[0105] Accordingly, the opening area on the downstream side in the insertion direction of the insertion portion becomes smaller or disappears. Therefore, when using the coupled members to be coupled, foreign matters can be suppressed from passing through the internal space of the base portion of the coupling member.

[0106] [Seventh mode]

[0107] The seventh mode is characterized in that, in the sixth mode, the end wall portion is formed in a convex shape on the downstream side in the insertion direction.

[0108] Thereby, the internal space of the insertion portion formed inside the end wall portion can be expanded in the insertion direction, and the operability when an operator hooks a finger on the extraction force receiving portion and pulls it in the extraction direction can be improved.

[0109] [Eighth mode]

[0110] The eighth mode is characterized in that, in any one of the first to seventh modes, two or more of the clamping portions are provided, and the extraction force receiving portion is configured to connect the respective elastic support portions that respectively support two or more of the clamping portions.

[0111] Thereby, when removing the combined parts, the extraction force in the extraction direction is received by the extraction force receiving portion, and two or more clamping portions that sandwich a plurality of combined members between the flange portions can be retracted into the through hole by one action. Therefore, in the configuration in which two or more clamping portions are provided, the operation during removal can be simplified.

[0112] [Ninth mode]

[0113] The ninth mode is characterized in that, in any one of the first to eighth modes, the extraction force receiving portion is constituted by a linear member (such as the extraction piece 14') extending in a direction perpendicular to the insertion direction (for example, the vertical direction), a curved member convex in the extraction direction (such as the extraction piece 14), or a bent member convex in the extraction direction (such as the extraction piece 14").

[0114] Thereby, an extraction force receiving portion with a simple shape can be realized, and a combined part with a simple structure can be realized.

[0115] [Tenth mode]

[0116] The tenth mode is characterized in that, in any one of the first to ninth modes, the connection position where the extraction force receiving portion is connected to the elastic support portion is provided on the downstream side of the elastic support portion in the insertion direction.

[0117] Thereby, since the connection position where the extraction force receiving portion is connected to the elastic support portion is a position close to the clamping portion supported by the elastic support portion, the force for displacing the clamping portion by the extraction force received by the extraction force receiving portion can be reduced. As a result, when removing the combined parts, a smaller extraction force received by the extraction force receiving portion is sufficient, and thus the operability can be improved.

[0118] [Eleventh Mode]

[0119] The eleventh mode is characterized in that, in any one of the first to ninth modes, the connection position where the extraction force receiving portion is connected to the elastic support portion is provided on the upstream side of the elastic support portion in the insertion direction and is biased towards the upstream side.

[0120] Thus, it is easy to operate the extraction force receiving portion from the outside, and when removing the coupling part, the operability can be improved.

[0121] [Twelfth Mode]

[0122] The twelfth mode is characterized in that, in any one of the first to eleventh modes, the connection position where the extraction force receiving portion is connected to the elastic support portion is in a direction orthogonal to the insertion direction and in a direction orthogonal to the direction in which the clamping portion is displaced toward the inside of the through hole due to the elastic deformation of the elastic support portion caused by the extraction force (for example, the lateral direction), and is provided at a position overlapping the clamping portion.

[0123] Thus, when removing the coupling part, compared with the case where it is provided at a position not overlapping the clamping portion (non-overlapping position), the force for displacing the clamping portion can be reduced. As a result, when removing the coupling part, a smaller extraction force is required to be borne by the extraction force receiving portion, so the operability can be improved.

[0124] [Thirteenth Mode]

[0125] The thirteenth mode is characterized in that, in any one of the first to twelfth modes, the flange portion has a contact surface, and when the insertion portion is inserted into each through hole, the contact surface contacts the surface of the most upstream joined member in the insertion direction.

[0126] Thus, surface contact can be achieved between the most upstream joined member in the insertion direction and the flange portion, so that the flange portion of a plurality of joined members can be more stably clamped between the clamping portions, and a coupling part with a high coupling force can be realized.

[0127] [Fourteenth Mode]

[0128] The fourteenth mode is characterized in that, in any one of the first to thirteenth modes, the clamping portion has a contact surface (for example, the return surface 13a), and when the insertion portion is inserted into each through hole, the contact surface contacts the surface of the most downstream joined member in the insertion direction.

[0129] Thus, it is possible to achieve surface contact between the most downstream bonded component in the insertion direction and the clamping portion. Therefore, it is possible to realize a clamping portion that can more stably clamp a plurality of bonded components between the flange portions, and a bonding part with high bonding strength can be realized.

[0130] [Fifteenth Mode]

[0131] The fifteenth mode is characterized in that, in any one of the first to fourteenth modes, the surface (inclined surface 13b) of the clamping portion facing the downstream side in the insertion direction is a plane or a curved surface inclined with respect to the insertion direction.

[0132] Thus, when installing the bonding part, by the pushing force for pushing the insertion portion into the through-hole, the elastic support portion can be elastically deformed to smoothly move the clamping portion into the through-hole, thereby improving the operability.

[0133] [Sixteenth Mode]

[0134] The sixteenth mode is characterized in that, in any one of the first to fifteenth modes, there is an extension portion (such as the pulling piece 16) extending from the extraction force receiving portion toward the upstream side in the insertion direction.

[0135] Thus, by pulling the extension portion, the extraction force can act on the extraction force receiving portion. Therefore, a method for removing the bonding part by pulling the extension portion can be provided.

[0136] [Seventeenth Mode]

[0137] The seventeenth mode is characterized in that, in the sixteenth mode, an anti-slip portion (such as the rib 16a) is formed on the extension portion.

[0138] Thus, the sliding when pulling the extension portion can be suppressed.

[0139] [Eighteenth Mode]

[0140] The eighteenth mode is characterized in that, in any one of the first to seventeenth modes, the bonding part is a molded product made of a resin material.

[0141] Thus, the bonding part can be mass-produced inexpensively.

[0142] [Nineteenth Mode]

[0143] The nineteenth mode is characterized in that, in any one of the first to seventeenth modes, the bonding part is a molded product made of a resin material.

[0144] Thus, a bonding part with excellent recyclability can be provided.

[0145] [Twentieth Mode]

[0146] The twentieth mode is characterized in that, in any one of the first to eighteenth modes, there is a displacement restricting member which abuts against the extraction force receiving portion and restricts the displacement thereof when the extraction force receiving portion is displaced in the insertion direction by an external force applied in the insertion direction.

[0147] Thus, even in a situation where the extraction force receiving portion is displaced or deformed due to an external force applied in the insertion direction, excessive displacement and deformation of the extraction force receiving portion can be suppressed by the abutment between the extraction force receiving portion and the displacement restricting portion, and the durability of the coupling member is improved.

[0148] In addition, in the coupling of the coupling member, when an external force is applied to the clamping portion that sandwiches a plurality of members to be coupled between the flange portions in a direction to retract inside the through hole, a situation may occur where the coupling member accidentally comes off. In this mode, it can be configured that when an external force for retracting the clamping portion is applied, the extraction force receiving portion connected to the elastic support portion that supports the clamping portion receives a force that deforms toward the side that abuts against the displacement restricting portion. According to this configuration, in the coupling of the coupling member, even when an external force for retracting the clamping portion is applied, deformation of the extraction force receiving portion caused by this external force can be prevented by the displacement restricting portion. As a result, retraction of the clamping portion can be suppressed, and a situation where the coupling member comes off can be suppressed.

[0149] [Twenty - first mode]

[0150] The twenty - first mode is a packaging box 1 composed of a plurality of packaging members (for example, an outer box 20 and a pallet 30), characterized in that the plurality of packaging members are coupled by any one of the coupling members of the first to twentieth modes.

[0151] Thus, a packaging box can be realized in which the operation for removing the coupling member is simplified.

Claims

1. A combined part having: An inserting portion that is inserted into each through hole provided on each of the coupled components in a state where a plurality of coupled components are overlapped with each other; a flange portion formed on an upstream side of the insertion portion in the insertion direction, and abutting against an edge of a through hole of a coupled component located most upstream in the insertion direction when the insertion portion is inserted into each through hole; as well as a clamping portion that sandwiches the plurality of coupled components between the flange portion when the insertion portion is inserted into the through holes, The combination part is characterized by comprising: an elastic support portion, which supports the clamping portion so as to be displaceable in a direction perpendicular to the insertion direction; as well as a removal force receiving portion connected to the elastic support portion, and receiving a removal force in a removal direction opposite to the insertion direction when the insertion portion is removed from each through hole, The elastic support portion is elastically deformed by the removal force received by the removal force receiving portion, so that the clamping portion is displaced toward the inside of the through hole.

2. The joining component according to claim 1, characterized in that: The insertion portion is hollow with an internal space. The extraction force receiving portion is disposed in the internal space.

3. The joining component according to claim 2, characterized in that: The extraction force receiving portion is arranged at a position deviated from the central position of the internal space in a direction perpendicular to the insertion direction and in a direction perpendicular to the direction in which the clamping portion is displaced toward the inside of the through hole due to elastic deformation of the elastic support portion caused by the extraction force.

4. The joining component according to claim 2 or 3, characterized in that: The elastic support portion constitutes a side wall of the insertion portion.

5. The joining component according to claim 4, characterized in that: The elastic support portion is configured to be independent from the other side wall of the insertion portion and to be displaceably separable.

6. The joining component according to claim 5, characterized in that: An end wall portion is formed in the insertion portion, the end wall portion blocking the downstream side in the insertion direction surrounded by the other side wall portion so as not to block the downstream side in the insertion direction of the elastic support portion.

7. The joining component according to claim 6, characterized in that: The end wall portion is formed in a convex shape on the downstream side in the insertion direction.

8. The joining component according to any one of claims 1 to 3, characterized in that: having two or more of the clamping parts, The extraction force receiving portion is configured to connect the elastic support portions that respectively support two or more of the clamping portions.

9. The joining component according to any one of claims 1 to 3, characterized in that: The removal force receiving portion is composed of a linear member extending in a direction perpendicular to the insertion direction, a curved member convex in the removal direction, or a bent member convex in the removal direction.

10. The joining component according to any one of claims 1 to 3, characterized in that: A connection position where the extraction force receiving portion is connected to the elastic support portion is provided on the elastic support portion at a position close to the downstream side in the insertion direction.

11. The joining component according to any one of claims 1 to 3, characterized in that: A connection position where the extraction force receiving portion is connected to the elastic support portion is provided on the elastic support portion at a position slightly upstream in the insertion direction.

12. The joining component according to any one of claims 1 to 3, characterized in that: The connection position of the extraction force bearing portion to the elastic support portion is in a direction orthogonal to the insertion direction and in a direction orthogonal to the direction in which the clamping portion is displaced toward the inside of the through hole due to the elastic deformation of the elastic support portion caused by the extraction force, and is arranged at a position overlapping with the clamping portion.

13. The joining component according to any one of claims 1 to 3, characterized in that: The flange portion has a contact surface that contacts a surface of a coupled member located most upstream in the insertion direction when the insertion portion is inserted into each of the through holes.

14. The joining component according to any one of claims 1 to 3, characterized in that: The flange portion has a contact surface, and when the insertion portion is inserted into each of the through holes, the clamping portion contacts a surface of the coupled member at the most downstream side in the insertion direction.

15. The joining component according to any one of claims 1 to 3, characterized in that: A surface of the clamping portion that faces the downstream side in the insertion direction is a flat surface or a curved surface that is inclined with respect to the insertion direction.

16. The joining component according to any one of claims 1 to 3, characterized in that: An extending portion is provided which extends from the extraction force receiving portion toward the upstream side in the insertion direction.

17. The coupling element according to claim 16, characterized in that: An anti-slip portion is formed on the extending portion.

18. The joining component according to any one of claims 1 to 3, characterized in that: The coupling part is a molded product made of a resin material.

19. The joining component according to any one of claims 1 to 3, characterized in that: The coupling part is a molded product made of paper material.

20. The joining component according to any one of claims 1 to 3, characterized in that: A displacement limiting member is provided, and when the removal force receiving portion is displaced in the insertion direction by receiving an external force in the insertion direction, the displacement limiting member abuts against the removal force receiving portion to limit the displacement.

21. A packaging box composed of multiple packaging components, characterized in that: The plurality of packaging components are connected by the connecting part according to any one of claims 1 to 3.

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