JP2013043690A5 - - Google Patents

Description

Container wall connecting structure, and container provided with side walls to which side wall pieces are connected by the container wall connecting structure

  The present invention relates to a container wall connecting structure for connecting side wall pieces to form a side wall of the container, and a container including a side wall to which side wall pieces are connected by the container wall connecting structure. The present invention relates to a container wall connection structure for connecting side wall pieces to increase the side wall area, and a container whose side wall length and side wall area are expanded by the container wall connection structure.

  Conventionally, it has been proposed to adjust the height of the side wall to a desired height by connecting a bulk raising frame to the side wall of the container according to the height of the stored item. For example, a locking claw member that is flexible and protrudes from the lower part of the lifting frame toward the engagement hole formed in the container located below is pushed. The locking projection at the distal end of the locking claw member is formed with a tapered portion that is inclined outward toward the base end of the locking claw member. For this reason, the distance between the latching claw members is inserted into the engagement hole while being narrowed. When inserted beyond the end portion of the taper portion, the locking claw member is elastically restored and opened, and the locking step portion at the end portion of the taper portion contacts and engages with the locking hole (for example, Patent Document 1).

Utility model registration No. 2521865

  The configuration presented as the background art is such that the locking claw member having a tapered portion inclined outward toward the proximal end portion at the distal end thereof is in a locking step portion beyond the tapered portion of the locking claw member. By engaging with the engaging hole, the side wall of the container and the frame for raising the lid are connected.

  However, this configuration has several problems as described below. That is, when an external force is applied to the connected containers, depending on the direction of the external force, a force may be applied in a direction in which the engagement hole presses the locking claw member. Although the locking claw member is elastically deformed by this pressing, the direction thereof is a direction in which the engagement between the locking claw member and the engagement hole is released. If an external force is applied, there is a risk that an unexpected situation may occur in which the connection between the side wall of the container and the frame for raising the hook is released.

  In order to prevent the connection from being released due to unforeseen circumstances, it is conceivable to increase the rigidity of the locking claw member to suppress elastic deformation against external force. However, this requires a greater force when engaging and disengaging the locking claw member and the engagement hole, and the operability of attaching and detaching between the container side wall and the bulk raising frame may be deteriorated. .

  Furthermore, in the configuration of the background art, the locking claw member itself receives various forces such as the weight of the container, the weight of the stored item in the container, and the external force. Considering that the rigidity that can be secured to the locking claw member is also limited as described above, it may be difficult to ensure the strength of the locking claw member. This may be a problem because it may be subject to restrictions such as the weight of the container, the weight that can be stored, and handling restrictions.

  The present invention has been proposed in view of the above-described problems, and when connecting the side wall pieces to form the side wall of the container, the engagement state is effectively maintained even for unexpected external force. It is an object of the present invention to provide a container wall connecting structure that does not cause an unexpected load on the container, and a container having a side wall to which side wall pieces are connected by the container wall connecting structure.

In the container wall connection structure according to the present application, when the first side wall piece and the second side wall piece are releasably connected to form the side wall of the container, the first side wall piece and the second side wall piece are To be connected. The first side wall piece includes an engagement hole portion that is opened in the wall surface direction from the end side, and an engagement holding portion that is formed in the engagement hole portion. The second side wall piece protrudes from the end side in the extending direction of the wall surface, and is engaged with and released from the engagement holding portion, and is elastically deformed in the first direction. And an engagement protrusion that protrudes in the direction and engages with the engagement holding portion.
Moreover, the container which concerns on this application is provided with the side wall by which the side wall piece was connected by the said container wall connection structure.

  In addition, the engagement surface of the engagement holding portion is configured to have an inclination that restricts movement in the engagement direction release direction in the first direction.

  In addition, at least a part of the engaging portion where the engaging protrusion and the engaging holding portion come into contact with each other is located at the position on the center line of the elastic deformation of the engaging base portion or the release direction in the first direction with respect to the center line. It is arranged at the position.

  In addition, each of the first side wall piece and the second side wall piece includes a protective member that receives an external force and reduces transmission of the external force to the engaging base during engagement.

  When the container is lifted with a stored item in it, or when the side wall is twisted due to an impact caused by dropping of the container, a force may be exerted in a direction in which the connected side wall pieces are separated from each other. According to the container wall connection structure and the container of the present application, even when this force is applied, the engagement base is not easily elastically deformed in the direction of disengagement, so that the engagement state is maintained even with respect to external force. Can do. In addition, even if the engagement base is elastically deformed by an external force, a direction different from the elastic deformation direction (first direction) of the engagement base in which the engagement state between the engagement holding portion and the engagement protrusion is released is different. Since the engagement protrusions are provided in the direction 2, the engagement state of the engagement protrusions with the engagement holding portion is not immediately released and the engagement state is maintained. Thereby, the engagement state robust against external force is maintained.

  Further, the engagement surface of the engagement holding portion has an inclination for restricting movement in the engagement direction release direction in the first direction. For this reason, when external force is added, it can suppress that an engagement protrusion moves to the direction of cancellation | release of an engagement state. Thereby, the engagement state robust against external force is maintained.

  In addition, at least a part of the locking portion where the engagement protrusion and the engagement holding portion abut is positioned on the center line of the elastic deformation of the engagement base portion or in the release direction of the first direction with respect to the center line. Placed in position. For this reason, when an external force is applied, the force applied to the engaging portion where the engaging protrusion and the engaging holding portion abut is opposite to the direction in which the engaged state is released, that is, the engaged state is A rotational moment of a force that elastically deforms the engagement base portion in a direction to be maintained acts. Thereby, the engagement state robust against external force is maintained.

  In addition, each of the first side wall piece and the second side wall piece includes a protective member that receives an external force and reduces transmission of the external force to the engaging base during engagement. For this reason, the force applied to the engagement base of the engagement protrusion and the engagement holding portion is limited except for the force received by the protection member among the transmitted external forces. The load on the engagement portion is reduced, and an engagement state that is robust against external force is maintained.

It is a disassembled perspective view of the article | item storage container 1 provided with the container wall connection structure of this application. FIG. 3 is a perspective view before connection of the container wall connection structure according to the first embodiment, and is a view from the outside of the article storage container 1. FIG. 3 is a perspective view before connection of the container wall connection structure according to the first embodiment, and is a view from the inside of the article storage container 1. It is the perspective view which looked at the connected state of the container wall connection structure concerning a 1st embodiment from the outside of article storage container 1. It is the perspective view which looked at the state where the container wall connection structure concerning a 1st embodiment was connected from the inside of article storage container 1. FIG. It is a perspective view which shows the AA cross section of FIG. It is sectional drawing which shows the state before engagement of the container wall connection structure in the AA cross section of FIG. FIG. 5 is a cross-sectional view showing a state after engagement of the container wall coupling structure in the AA cross section of FIG. 4. It is a perspective view from the outer side of the article | item storage container 1 with the structure with which the 2nd side wall piece 5 is equipped among the container wall connection structures which concern on 2nd Embodiment. It is a perspective view from the inner side of the article | item storage container 1 with the structure with which the 2nd side wall piece 5 is equipped among the container wall connection structures which concern on 2nd Embodiment. It is explanatory drawing which shows the function of the structure with which the 2nd side wall piece 5 is equipped among the container wall connection structures which concern on 2nd Embodiment. It is a perspective view before the connection of the container wall connection structure which concerns on 3rd Embodiment, Comprising: It is a figure from the outer side of the goods storage container 1. FIG. It is a perspective view before the connection of the container wall connection structure which concerns on 3rd Embodiment, Comprising: It is a figure from the inner side of the goods storage container 1. FIG. It is the perspective view which looked at the connected state of the container wall connection structure concerning a 3rd embodiment from the outside of article storage container 1. It is the perspective view which looked at the connected state of the container wall connection structure concerning a 3rd embodiment from the inner side of the article storage container. It is a perspective view which shows the AA cross section of FIG. It is sectional drawing which shows the BB cross section of FIG.

  FIG. 1 is an exploded perspective view showing an article storage container 1 in which a bottom 2 and a side 3 are separated. The article storage container 1 stores industrial products, various parts necessary for assembling the products, products in various industrial activities such as agricultural products and fish catches, articles in logistics activities, and the like. It is a container used for. It is a container used for collecting goods or for carrying goods such as shipping and loading. The material is molded, for example, with resin or the like in response to a recent request for weight reduction.

  An example in which the container wall connection structure of the present application is used as a structure for connecting the bottom portion 2 and the side portion 3 will be described below.

  In the bottom portion 2, a first side wall piece 4 rising from the bottom plate is formed integrally with the bottom plate. On the side surface 12 of the first side wall piece 4, ribs 8 having a predetermined width are erected vertically and horizontally at a predetermined interval to ensure strength. A second side wall piece 5 for adding the height of the side wall is connected to the upper end of the first side wall piece 4. On the side surface 12 of the second side wall piece 5, ribs 8 having a predetermined width are erected vertically and horizontally at a predetermined interval to ensure strength. The first side wall piece 4 and the second side wall piece 5 are connected to each other on the lower side of the first engaging portion 6 and the second side wall piece 5 provided on the upper side edge of the first side wall piece 4. This is carried out by engaging with a second engaging portion 7 provided to protrude from the end side. The first engaging portion 6 and the second engaging portion 7 are provided at predetermined intervals at corresponding positions.

  The first embodiment will be described with reference to FIGS. 2 and 3 are perspective views in a state where the first engaging portion 6 and the second engaging portion 7 are not engaged. FIG. 2 is a perspective view when the first side wall piece 4 and the second side wall piece 5 are viewed from the outside, and FIG. 3 is a perspective view when viewed from the inside. The first engagement portion 6 shown in FIG. 3 clearly shows the internal structure by cutting out the side surface 12.

  The first engaging portion 6 is formed so as to be within a predetermined width of the rib 8 that is erected on the side surface 12 of the first side wall piece 4 from the upper end side of the first side wall piece 4. An engagement hole portion 11 is opened at the upper side edge of the first side wall piece 4. The engagement hole portion 11 includes a side surface 12 of the first side wall piece 4, a rib 8, a rib facing surface 13 erected on the side surface 12 as a surface facing the rib 8, and a first surface as the surface facing the side surface 12. The hole is surrounded by the inner facing surface 14 provided in the upper half of the first engaging portion 6 from the upper end side of the side wall piece 4. A lower end surface 16 is provided at the lower end portion of the engagement hole portion 11. Between the inner facing surface 14 and the lower end surface 16, a pair of reinforcing portions 15 connected to the rib 8 and the rib facing surface 13 are provided at both ends thereof. The reinforcing portion 15 secures the strength of the inner facing surface 14 on which the engagement holding portion 17 is erected with respect to a load applied when an engagement protrusion 19 and an engagement holding portion 17 described later are engaged. Is. A window portion 23 is opened in a region sandwiched between the pair of reinforcing portions 15 from the lower end of the inner facing surface 14.

  A pair of engagement holding portions 17 are erected on the inner side of the inner facing surface 14. The engagement holding portion 17 includes a first tapered surface S1 (see FIGS. 6 to 8) whose thickness increases toward the lower side of the first engagement portion 6, and the inner facing surface 14 at the lower end of the engagement holding portion 17. It has 2nd taper surface S2 (refer FIGS. 6-8) which returns upwards as it goes to. It has a shape in which a substantially triangular prism is laid down.

  The second engaging portion 7 is formed so as to protrude from the lower side edge of the second side wall piece 5 and has a width that fits in the engaging hole portion 11. The second engaging portion 7 is provided with an engaging base portion 18 protruding from the center portion thereof, and includes an engaging protrusion 19 projecting in the left-right direction at the terminal portion. The engagement base 18 and the engagement protrusion 19 have a substantially inverted T-shape.

  A protection member is provided so as to surround the substantially inverted T-shaped engagement base 18 and the engagement protrusion 19 on the left and right and below. The protection members are positioned at both ends of the second engagement portion 7 and protrude downward, a pair of side end protection members 20, a lower end protection member 21 connecting the pair of side end protection members 20 at the lower end, and a pair of A pair of side end reinforcing members 22 that reinforce each of the side end protecting members 20 above the engaging protrusions 19 are configured.

  4 and 5 are perspective views showing a state in which the second engaging portion 7 is inserted into the first engaging portion 6 and the engaging protrusion 19 is engaged with the engaging holding portion 17. FIG. 4 is a perspective view when the first side wall piece 4 and the second side wall piece 5 are viewed from the outside, and FIG. 5 is a perspective view when viewed from the inside. In the perspective view of FIG. 5, the side surface 12 is cut away to clearly show the internal structure. FIG. 6 is a perspective view showing a section AA in FIG.

  When the second engaging portion 7 is inserted into the first engaging portion 6, the upper side surfaces of the pair of engaging protrusions 19 protruding left and right of the engaging base portion 18 are the first of the pair of engaging holding portions 17. 2 is brought into contact with the tapered surface S2 to be engaged. The engagement state is released by connecting the center portion of the engagement projection 19 or the engagement base portion 18 and the engagement projection 19 via the window portion 23 opened below the first engagement portion 6. This is done by pressing the part toward the side surface 12.

  The periphery of the engagement protrusion 19 and the engagement holding portion 17 that are engaged with each other is surrounded by the protective member of the second engagement portion 7. The protective member is in contact with or in close proximity to the side surface 12, the rib 8, the rib facing surface 13, and the inner facing surface 14 that are the inner surfaces of the engaging hole portion 11 of the first engaging portion 6. As a result, at least a part of the external force received in the connected state of the first side wall piece 4 and the second side wall piece 5 is in contact with the side surface 12 of the engagement hole portion 11 of the first engagement portion 6 and the second engagement. It is received by the protective member of the joint portion 7. The load applied to the engagement protrusion 19 and the engagement holding portion 17 is relieved, and the engagement state is maintained against an external force.

  7 and 8 show a state of engagement between the engagement protrusion 19 and the engagement holding portion 17 when the second engagement portion 7 is inserted into the first engagement portion 6. When the second engagement portion 7 is inserted into the first engagement portion 6, the lower end portion of the engagement protrusion 19 contacts the first tapered surface S 1 of the engagement holding portion 17 as shown in FIG. Touch. In response to the insertion of the second engagement portion 7, the lower end portion of the engagement protrusion 19 is pressed against the first tapered surface S <b> 1 of the engagement holding portion 17. Since the engagement protrusion 19 and the engagement holding portion 17 are provided as a pair on the left and right in the insertion direction, the engagement protrusion 19 and the engagement protrusion 19 are engaged by the pressing force that the engagement protrusion 19 receives from the first tapered surface S1. The engagement base 18 connected to the mating protrusion 19 receives a force on the side surface 12 side. In response to this, the engagement protrusion 19 slides downward on the first tapered surface S1 while the engagement base 18 is elastically deformed. In response to the engagement protrusion 19 exceeding the first tapered surface S1, the engagement base portion 18 is elastically restored and is brought into contact with the second tapered surface S2 of the engagement holding portion 17 to be in an engaged state.

  Here, 2nd taper surface S2 has the inclination which goes up as it goes to the inner side opposing surface 14. As shown in FIG. The engaging protrusion 19 that contacts the second tapered surface S2 is biased in the direction toward the inner facing surface 14. That is, it is biased in the direction in which the engaged state is maintained.

  A second embodiment will be described with reference to FIGS. In the second embodiment, a second engagement portion 7A is provided instead of the second engagement portion 7 in the first embodiment. 9 and 10 are perspective views of the second engaging portion 7A. FIG. 9 is a perspective view when viewed from the outside of the second side wall piece 5, and FIG. 10 is a perspective view when viewed from the inside.

  The second engaging portion 7A includes an engaging base portion 18A and an engaging protrusion 19A in place of the engaging base portion 18 and the engaging protrusion 19 of the second engaging portion 7. The engagement base 18A and the engagement protrusion 19A are substantially the same in shape as the engagement base 18 and the engagement protrusion 19 in the first embodiment, except that the engagement base 18A and the engagement protrusion 19A have a substantially inverted T shape. The shape is different from the engagement base 18.

  In the engaging base 18A, a base end 18A1 connected to the rib 8 and a terminal end 18A3 where the engaging projection 19A projects in the left-right direction are connected by an intermediate portion 18A2. The engagement base portion 18A is formed such that the outer surface of the second side wall piece 5 is flush with the base end portion 18A1 to the terminal end portion 18A3. Further, the thickness of the terminal end 18A3 is greater than that of the base end 18A1. Therefore, the intermediate part 18A2 that connects the base end part 18A1 and the terminal end part 18A3 is configured to increase in thickness as it goes from the base end part 18A1 toward the terminal end part 18A3. Specifically, it is configured to continuously increase the thickness. Further, the engagement protrusion 19A is disposed close to the inner side of the second side wall piece 5 in the terminal end portion 18A3.

  FIG. 11 is a view of the engagement base 18 </ b> A and the engagement protrusion 19 </ b> A as viewed from the direction along the wall surface of the second side wall piece 5. The locking portion X where the engagement protrusion 19A and the engagement holding portion 17 abut is disposed at a position offset to the inner side of the second side wall piece 5 at the end portion 18A3 of the engagement base portion 18A. For this reason, the extension line CL2 extending downward from the center of the locking portion X has a distance L on the inner side of the second side wall piece 5 with respect to the center line CL1 of the base end portion 18A1 of the engagement base portion 18A. Has an offset.

The side wall formed of the first side wall piece 4 and the second side wall piece 5 by lifting the article storage container 1 in a state in which the stored items are stored therein or by an impact caused by dropping of the article storage container 1 The external force F acts upward in the direction in which the first and second side wall pieces 4 and 5 are pulled apart from each other, that is, along the center line CL1. The external force F is applied to the locking portion X where the engagement base portion 18A and the engagement holding portion 17 abut. Thereby, the engagement holding part 17 is pushed upward along the extension line CL2 by the engagement protrusion 19A, and the same force F0 as the external force F is applied. At the same time, due to the reaction of the force F0, a force F1 having the same magnitude as the force F0 is applied downward to the engaging protrusion 19A along the extension line CL2. Here, the force F0, F1 is intended acts on the entire locking portion X, but also equivalent on the assumption that the work concentrated on the center of the engagement portion X. In the following description, the forces F0 and F1 are described as acting on the center of the locking portion X.

  The force F1 applied to the engagement protrusion 19A is maintained in an engagement state that is opposite to the direction in which the engagement state is released because there is an offset of a distance L between the extension line CL2 and the center line CL1. In the direction, that is, on the outer side of the second side wall piece 5, a force moment MR (= F1 × L) is applied to elastically deform the engagement base 18A. The engagement base 18A is biased by a force moment MR in a direction opposite to the engagement release direction. Even if the force F1 for pulling the first and second side wall pieces 4 and 5 apart from each other works, the unexpected release of the engaged state can be prevented. The side wall formed of the first side wall piece 4 and the second side wall piece 5 by lifting the article storage container 1 in a state in which the stored items are stored therein or by an impact caused by dropping of the article storage container 1 Even when the twist is twisted, the engagement state between the engagement holding portion 17 and the engagement protrusion 19A can be maintained.

  A third embodiment will be described with reference to FIGS. 12 and 13 are perspective views in a state where the first engaging portion 6B and the second engaging portion 7B are not engaged. FIG. 12 is a perspective view of the first side wall piece 4 and the second side wall piece 5 when viewed from the outside, and FIG. 13 is a perspective view when viewed from the inside. The first engaging portion 6B shown in FIG. 13 clearly shows the internal structure by cutting out the side surface 12.

  The first engaging portion 6B is formed so as to be within a predetermined width of the rib 8 erected on the side surface 12 of the first side wall piece 4 from the upper end side of the first side wall piece 4. It is the same as that of the 1st engaging part 6 of 1st Embodiment. A pair of engagement hole portions 11 </ b> B are opened on the upper side edge of the first side wall piece 4. The engagement hole portion 11 </ b> B is erected on the side surface 12 as a surface facing the partition protection member 32 that partitions the pair of engagement hole portions 11 </ b> B, the side surface 12 of the first side wall piece 4, the rib 8, and the rib 8. Covering the upper half of the first engaging portion 6B from the upper side edge of the first side wall piece 4 as the surface facing the rib facing surface 13 and the side surface 12, the lower half defines a pair of window portions 31. Is a hole surrounded by the inner facing surface 14B. A lower end surface 16 is provided at the lower end of the engagement hole portion 11B.

  A pair of engagement holding portions 17 </ b> B are erected on the inner side of the rib 8 and the rib facing surface 13. The engagement holding part 17 </ b> B has the same shape as the engagement holding part 17. That is, the first tapered surface S1 that increases in thickness as it goes downward of the first engagement portion 6B, and the second taper that returns upward as it goes toward the rib 8 or the rib facing surface 13 at the lower end of the engagement holding portion 17B. And a tapered surface S2. It has a shape in which a substantially triangular prism is laid down.

  The second engaging portion 7B is formed so as to protrude from the lower end of the second side wall piece 5, and is formed in a pair of rod-like shapes that fit in the pair of engaging hole portions 11B. A rod-shaped engagement base 18B is provided. The engagement base portion 18 </ b> B has a rod-like shape that terminates at the termination portion 33. The intermediate portion is provided with an engaging protrusion 19B that protrudes outward from the second side wall piece 5.

  The second engaging portion 7B is formed with a pair of protective members 34 projecting downward from the base end portion at a central portion sandwiched between the pair of engaging base portions 18B. A partition protection member 32 that divides the pair of engagement hole portions 11B is inserted into the space between the pair of protection members 34 in contact with or in close proximity to each other.

  14 and 15 are perspective views showing a state in which the second engaging portion 7B is inserted into the first engaging portion 6B and the engaging protrusion 19B is engaged with the engaging holding portion 17B. FIG. 14 is a perspective view when the first side wall piece 4 and the second side wall piece 5 are viewed from the outside, and FIG. 15 is a perspective view when viewed from the inside. In the perspective view of FIG. 15, the side structure 12 is cut away to clearly show the internal structure. 16 is a perspective view showing an AA section in FIG. 14, and FIG. 17 is a perspective view showing a BB section in FIG.

  When the second engagement portion 7B is inserted into the first engagement portion 6B, the upper side surfaces of the engagement protrusions 19B protruding from the middle portion of the pair of engagement base portions 18B are the surfaces of the pair of engagement holding portions 17B. The second tapered surface S2 is brought into contact with the second tapered surface S2. The engagement state is released by pressing the pair of end portions 33 protruding from the lower end of the first engagement portion 6B in a direction to approach each other and elastically deforming the engagement base portion 18B.

  In the engaged state, the partition protection member 32 of the first engagement portion 6B is inserted between the pair of protection members 34 of the second engagement portion 7 so that the two come into contact with each other or face each other in close proximity. Receiving at least part of Thereby, the load applied to the engagement protrusion 19B and the engagement holding portion 17B is relieved, and the engagement state is maintained against the external force.

As described above in detail, according to the present onset bright, the article storage container 1 in a state in which inside the housing material is housed is lifted, or, first by the impact caused by the falling of the article storage container 1 Even if an external force F is applied in a direction in which the side wall piece 4 and the second side wall piece 5 are twisted so that the first and second side wall pieces 4 and 5 are separated from each other, the engagement base 18 , 18A, 18B are not easily elastically deformed in the disengagement direction. For this reason, the engagement state between the engagement holding part 17 and the engagement protrusion 19, the engagement holding part 17 and the engagement protrusion 19A, and the engagement holding part 17B and the engagement protrusion 19B is maintained robustly.

  The direction of elastic deformation (first direction) of the engagement base 18 in which the engagement state between the engagement holding portion 17 and the engagement protrusion 19 is released is the direction toward the side surface 12. On the other hand, the engagement protrusion 19 protrudes from the engagement base 18 in a direction (second direction) along the side surface 12 orthogonal to the elastic deformation direction (first direction) of the engagement base 18. Is provided. For this reason, even if the engagement base 18 is elastically deformed by an external force, the engagement state of the engagement protrusion 19 with the engagement holding portion 17 is not immediately released and the engagement state is maintained.

  Further, the engagement surface of the engagement holding portion 17 extends beyond the region in contact with the engagement protrusion 19 in the direction of releasing the engagement state in the elastic deformation direction of the engagement base portion 18. For this reason, it is possible to ensure a long distance until the engagement state of the engagement protrusion 19 with respect to the engagement holding portion 17 is released, and the engagement state is maintained against the external force.

  Further, the engagement protrusion 19 includes a pair of side end protection members 20, a lower end protection member 21, and a pair of side end reinforcement members 22 as protection members so as to surround the engagement projection 19 on the left and right and below. An external force is received between these protective members and the side walls (side surface 12, rib 8, rib facing surface 13, and inner facing surface 14) in the engaging hole portion 11 of the first engaging portion 6. Therefore, transmission of external force to the engaged state can be reduced. It is possible to prevent an unexpected load from being applied to the engaged state.

  In addition, according to the third embodiment (FIGS. 12 to 17) of the present invention, the direction of elastic deformation of the engagement base portion 18B (the first state) in which the engagement state between the engagement holding portion 17B and the engagement protrusion 19B is released. 1 direction) is a direction along the side surface 12. On the other hand, the engagement protrusion 19B protrudes in the outward direction (second direction) opposite to the side surface 12 orthogonal to the elastic deformation direction (first direction) of the engagement base 18B. It has been. For this reason, even if the engagement base 18B is elastically deformed by an external force, the engagement state of the engagement protrusion 19B with the engagement holding portion 17B is not immediately released and the engagement state is maintained.

  In addition, the engagement surface of the engagement holding portion 17B extends beyond the region in contact with the engagement protrusion 19B in the direction in which the engagement state is released. For this reason, it is possible to secure a long distance until the engagement state of the engagement protrusion 19B from the engagement holding portion 17B is released, and the engagement state that is robust against external force is maintained.

  Further, the partition protection member 32 and the protection member 34 are arranged in contact with each other or arranged close to each other, so that external force can be received and transmission of the external force to the engaged state can be reduced. For this reason, the force applied to the engagement state is limited, the load on the engagement portion is reduced, and the engagement state robust against the external force is maintained.

  Each embodiment has the following effects in common. That is, since the lower surface of the engagement holding portions 17 and 17B is the second tapered surface S2, even when an external force is applied to the engagement projections 19 and 19B in the engaged state, the engagement holding portion 17 is also applied. , 17B is held difficult to come off.

  Further, as described in FIG. 11, the locking portion X where the engagement protrusion 19A and the engagement holding portion 17 abut is in the first direction with respect to the elastic deformation center line CL1 of the engagement base portion 18A. Of these, it is disposed at a position in the release direction (that is, on the side surface 12 side). For this reason, when an external force is applied, the force F1 applied to the locking portion X acts in a direction in which the engaged state is maintained. The positional relationship between the elastic deformation center line CL1 of the engagement base 19A, the engagement projection 19A and the engagement portion X where the engagement holding portion 17 abuts is in a direction in which the engagement state is maintained with respect to the force F1. This is because the rotational moment MR is in a working relationship. Note that the engagement protrusions 19 and 19B have the same positional relationship with the engagement bases 18 and 18B, so that the engagement state can be maintained against an external force. .

  Needless to say, the present invention is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the spirit of the present invention.

  For example, FIG. 1 shows a case where the first engaging portion 6 and the second engaging portion 7 forming the container wall coupling structure are provided at four locations on the long side and the short side, respectively. It goes without saying that the arrangement position and the number of arrangement of the wall connection structure are not limited to this, and can be appropriately changed according to the required engagement strength. For example, when a higher engagement strength is required, such as when the height of the side wall is high, it is preferable that the container wall connection structures are more closely arranged and engaged by a large number of container wall connection structures. In some cases.

  Moreover, although the case where the side wall piece divided into two was connected and the side wall was formed was illustrated in embodiment, this application is not limited to this. For example, when the height of the side wall is high, the height per side wall piece may be limited and the side wall pieces may be stacked and connected in multiple stages. Thereby, the intensity | strength of a side wall can be ensured, without increasing the number of arrangement | positioning of the container wall connection structure provided for engagement between side wall pieces.

  Further, instead of or in addition to connecting the side wall pieces divided in the vertical direction shown in the embodiment, a container wall connection structure may be provided so as to connect the side wall pieces divided in the left and right directions. it can.

DESCRIPTION OF SYMBOLS 1 Goods storage container 2 Bottom part 3 Side part 4 1st side wall piece 5 2nd side wall piece 6, 6B 1st engaging part 7, 7A, 7B 2nd engaging part 8 Rib 11, 11B Engagement hole part 12 Side surface 13 Rib facing surface 14, 14B Inner facing surface 15 Reinforcement portion 16 Lower end surface 17, 17B Engagement holding portion 18, 18A, 18B Engagement base portion 19, 19A, 19B Engagement protrusion 20 Side end protection member 21 Lower end protection member 22 Side end reinforcing member 23 Window portion 31 Window portion 32 Partition protection member 33 Terminal portion 34 Protection member
S1 First tapered surface S2 Second tapered surface

Claims (5)

A container wall connection structure that connects the first side wall piece and the second side wall piece when the first side wall piece and the second side wall piece are releasably connected to form the side wall of the container. There,
The first side wall piece is
An engagement hole that is opened from the end side toward the wall surface;
An engagement holding part formed in the engagement hole part,
The second side wall piece is
An engagement base portion that protrudes from the end side in the extending direction of the wall surface and elastically deforms in the first direction upon engagement / release of the engagement holding portion;
A container wall coupling structure comprising: an engagement protrusion protruding from the engagement base portion in a second direction and engaging with the engagement holding portion.   2. The container wall connection structure according to claim 1, wherein an engagement surface of the engagement holding portion has an inclination that restricts movement in the release direction of the first direction.   At least a part of the engaging portion where the engaging protrusion and the engaging holding portion abut is positioned on the center line of the elastic deformation of the engaging base portion or in the first direction with respect to the center line. The container wall connection structure according to claim 1, wherein the container wall connection structure is disposed at a position in a release direction. In each of the first side wall piece and the second side wall piece,
The container wall connection structure according to any one of claims 1 to 3, further comprising a protective member that receives external force and reduces transmission of external force to the engagement base during engagement.   A container provided with the side wall by which the side wall piece was connected by the container wall connection structure in any one of Claims 1 thru | or 4.

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