JP4101145B2 - Retaining structure of partition plate in container - Google Patents

Description

  The present invention relates to a structure for holding (or attaching) a partition plate between the opposing side walls of a container having a bottom wall and two opposing side walls.

  Conventionally, various devices have been proposed for arranging one or more partition plates vertically and horizontally inside a box-shaped container and partitioning the interior of the container into a plurality of accommodation spaces. For example, in Patent Document 1, a synthetic resin partition plate is arranged vertically and horizontally inside a synthetic resin container that has a bottomed box shape and a side wall surface that is a tapered peripheral surface that expands from the lower end toward the upper end. In the combined structure of the container and the partition plate that can be accommodated in a combined state, a lifting prevention protrusion is provided on each side end surface of the partition plate that contacts the tapered peripheral surface of the container body. Then, by placing the partition plate inside the container while pressing each lifting prevention protrusion against the corresponding tapered peripheral surface, even if the partition plate subsequently moves up along the tapered peripheral surface, at a slightly raised position Each protrusion is separated from the taper peripheral surface, and as a result, there is no further upward displacement of the partition plate, thereby preventing the partition plate from being lifted.

  The action and effect of the lifting prevention protrusion disclosed in Patent Document 1 is as described above, but the partition plate holding structure is at least one of the end surfaces (that is, the side end surfaces) at both ends in the longitudinal direction of the partition plate. As a result, the partition plate can be stretched (or stretched) in the longitudinal direction between two opposing taper peripheral surfaces as a reaction. This is based on the premise that the fixation between two opposing tapered peripheral surfaces is realized. And in such a partition plate holding structure, in order to achieve an effective strut in the longitudinal direction of the partition plate between two opposing inner wall surfaces, the distance between the two opposing inner wall surfaces, The total length of the partition plate (that is, the distance between the side end surfaces) must be properly matched.

  However, in resin molding, there is a situation in which a dimensional error is likely to occur in a molded product due to restrictions on the material characteristics of the resin and molding technology, and in particular, a larger dimensional tolerance is required for a molded product having a larger size. That is, it is unexpectedly difficult to stably mold the container and the partition plate while bringing the difference in fit between the distance between the two opposing inner wall surfaces and the total length of the partition plate as close as possible to zero. For this reason, even if the container and the partition plate can be mass-produced as a molded product that fits within the respective dimensional tolerances, the partition plate is relatively long depending on the combination of the individual containers and the partition plate, and the opposing wall surface of the container It may be difficult to fit in between them, or on the contrary, the partition plate may be too short to be securely fixed between the opposing wall surfaces of the container.

JP 11-171187 A (Claim 1, paragraph 0017)

  An object of the present invention is to provide a partition plate holding structure in a container that can stably hold the partition plate between the opposing side walls of the container without being affected by the dimensional tolerances of the container body and the partition plate. There is to do. Another object of the present invention is to provide a structure for holding a partition plate in a container that facilitates the work of mounting the partition plate between the opposing side walls when the partition plate is held between the opposing side walls of the container.

The invention of claim 1 is a structure for holding a partition plate between the opposing side walls of a container having a bottom wall and two opposing side walls, and each inner wall surface of the opposing side walls of the container has a bottom wall. A plurality of holding ridges for constructing a guide groove extending in a substantially orthogonal direction are arranged side by side, and each of both longitudinal ends of the partition plate is in a guide groove constructed between two adjacent holding ridges. In addition to being formed so as to be capable of entering and disposing, pressing portions for pressing the two adjacent holding protrusions in the plate thickness direction of the partition plate are provided on both sides in the plate thickness direction of both ends in the longitudinal direction. In the holding structure of the partition plate in the container, the lower end portion at both longitudinal ends of the partition plate is a relatively thick lower end thick portion, and the upper portion of the lower end thick portion is a thin portion, and the thin portion is the lower end thickness. It is arranged at the center in the thickness direction of the meat part, and the pressing part is the thin part. The lower pressing portion and the upper pressing portion arranged on one side of both sides of the plate thickness direction of the portion, and the middle pressing portion arranged on the other side, the lower pressing portion is the thin portion The upper pressing portion is disposed at a position near the upper end of the thin portion, and the middle pressing portion is intermediate between the lower pressing portion and the upper pressing portion and closer to the lower pressing portion. It is the holding structure of the partition plate in the container characterized by having been arrange | positioned.

  According to claim 1, a plurality of holding protrusions are arranged in parallel on each inner wall surface of the two opposing side walls of the container, and a guide groove extending in a direction substantially orthogonal to the bottom wall is constructed by these holding protrusions. . Moreover, each of the longitudinal direction both ends of a partition plate is formed so that an approach arrangement | positioning is possible in the guide groove constructed | assembled between two adjacent holding protrusions. Therefore, when the partition plate is mounted between the opposing wall surfaces of the container, each end of the partition plate enters the space between the two holding projections on the inner wall surface of the side wall (that is, in the guide groove), and the partition in the container The board position is almost fixed. At that time, the pressing portions provided on both sides of each end portion of the partition plate respectively press the two holding protrusions in the plate thickness direction, and as a reaction, each of both end portions in the longitudinal direction of the partition plate is two. It is clamped by one holding protrusion and is fixed in a guide groove between the holding protrusions. Since the clamping force by the two holding protrusions acts in the thickness direction perpendicular to the longitudinal direction of the partition plate, the side end surfaces of both ends in the longitudinal direction are not in contact with or pressed against the inner wall surfaces of the opposing side walls. (I.e., even if the partition plate does not stretch in the longitudinal direction between the opposing side walls), the partition plate is stably held between the two opposing side walls of the container. That is, according to the present invention, the distance between the inner wall surfaces of the opposing side walls of the container and the longitudinal length (full length) of the partition plate are influenced by the respective dimensional tolerances of the container and the partition plate, even though they do not ideally match. And the partition plate is stably held between the two opposing side walls of the container.

  The distance between the holding ridges (the pitch between the ridges) and the distance between the pressing parts on both sides in the plate thickness direction are the distance between the opposing side walls of the container and the longitudinal length (full length) of the divider plate. Compared to a very small size, even if a dimensional error occurs during molding, it is not a big error. Therefore, a slight fluctuation in the fitting dimension difference between the two holding protrusions and the end portion of the partition plate hardly causes a significant hindrance to the development of the pressing action in the plate thickness direction.

Moreover, in this invention, the lower end part in the longitudinal direction both ends of a partition plate is a lower end thick part, and the thin part is provided above the lower end thick part and the center of the thickness direction. And a press part consists of the low-order press part and high-order press part arrange | positioned at one side of the plate | board thickness direction both sides of a thin part, and the intermediate | middle press part arrange | positioned at the other side. With this configuration, between the two adjacent holding ridges , the thin portion enters after the lower end thick portion, and the lower pressing portion, the middle pressing portion, and the upper pressing portion arranged in the thin portion hold two. It enters between the ridges and presses these two holding ridges in the thickness direction . As a result, each pressing part receives a reaction from the corresponding holding protrusion. Lower pressing portion and the upper pressing part on one side and the reaction of the direction received from the holding projection in contact therewith, et al., Reaction of orientation medium pressing portion of the other side receives from the holding projection in contact with it is in the opposite direction Moreover, the height direction position is different from each pressing portion. For this reason, the clamping pressure exerted on the end portion of the partition plate between the two holding ridges tends to bend and deform the thin portion of the end portion of the partition plate into an S shape or a wave shape (see FIG. 6). ). On the other hand, the thin portion of the partition plate repels to keep its original shape against the clamping force to be bent and deformed in an S shape or a wave shape. Due to this repulsive action, the partition plate strungs strongly between two adjacent holding ridges, and the holding of the end portion in the longitudinal direction of the partition plate between the two holding ridges becomes strong (improvement of attachment strength of the partition plate) ).
A thicker portion closer to the end than the thin-walled portion is provided at a position near the both ends in the longitudinal direction that cannot enter the guide groove in the partition plate, and the lower end portion of the thick-walled portion closer to the end is projected in the longitudinal direction of the partition plate. It is preferable that the lower end thick portion is formed and the thin portion is projected from the center in the thickness direction of the thick portion near the end in the longitudinal direction of the partition plate (invention of claim 2).

  In addition, the height direction position of a press part means the distance from the bottom wall of a container to the press part of a partition plate, when a partition plate is mounted | worn and held between the opposing side walls of a container. Further, in order to effectively exert the repulsive action as described above on the partition plate, it is preferable that the partition plate be made of a resin material that allows an elastic curve in the thickness direction to some extent.

  According to a third aspect of the present invention, in the holding structure for the partition plate in the container according to the first or second aspect, the plurality of holding ridges constituting the guide groove have a base end interval (W) between the holding ridges. It is provided so that it may spread gradually as it goes to a front-end | tip part from a part.

  According to the third aspect, the width (W) of the guide groove constructed by the two holding protrusions adjacent to each other widens toward the tip, so that when guiding the longitudinal end of the partition plate into the guide groove, the guide is guided. It becomes easy to insert the end portion in the longitudinal direction of the partition plate from the tip end portion of the groove toward the base end portion. Further, in the case of a structure in which the interval (W) between the holding ridges gradually increases as it goes from the proximal end to the distal end, it is easy to insert the partition plate as described above, but the partition plate is easy to come out of the container. Since the defects are likely to appear, the end of the partition plate in the longitudinal direction is based on the repulsive action of the partition plate as described in claim 2 in order to strongly stretch the end of the partition plate between two adjacent holding protrusions. It is highly effective and necessary to adopt a structure that holds the gap between the two holding protrusions.

  According to a fourth aspect of the present invention, in the holding structure for a partition plate in the container according to any one of the first to third aspects, a guide groove constructed between a plurality of holding protrusions on each inner wall surface of the opposed side wall. In the vicinity of the front end of the guide plate, there is provided a mark serving as a guideline for identifying or selecting a guide groove into which the longitudinal end of the partition plate is to enter.

  According to claim 4, it becomes possible to identify or select each of the guide grooves arranged in large numbers on the inner wall surface of the side wall, using the position of the mark provided on each inner wall surface of the opposite side wall as a guideline. It becomes easy to determine which of the guide grooves in which many end portions in the longitudinal direction of the partition plate are to be entered.

  In addition, in Claim 4, it is preferable that "the mark is a concave portion, an opening portion or a convex portion having a predetermined shape provided on the inner wall surface of the side wall separately from the plurality of holding protrusions". In addition, it is preferable that “the respective marks are positioned so that the marks provided on one of the opposing side walls and the marks provided on the other side wall are opposed to each other”.

  Further, in claim 4, the plurality of holding ridges are constituted by a holding ridge having a relatively high upper end position and a holding ridge having a relatively low upper end position disposed therebetween. It is preferable that the mark is provided at an intermediate position between two holding protrusions whose upper end positions are relatively high. In this case, each guide groove is formed with reference to both a difference in height at the upper end position of the holding ridge and a mark provided at the intermediate position between the two holding ridges having a relatively high upper end position. It becomes possible to identify or select.

  According to the holding structure of the partition plate in the container according to any one of claims 1 to 3, the both ends in the longitudinal direction of the partition plate are clamped in the plate thickness direction of the partition plate by the two holding protrusions on the corresponding inner wall surface of the side wall. Since the holding structure is adopted, the partition plate can be stably held between the opposing side walls of the container without being affected by the dimensional tolerances of the container body and the partition plate.

  According to claim 4, it is possible to identify or select each of the guide grooves arranged in a large number on the inner wall surface of the side wall with reference to the position of the mark provided on each inner wall surface of the opposing side wall. It becomes easy to carry out the work of mounting the partition plate between the opposite side walls.

  Hereinafter, an embodiment of a container adopting a partition plate holding structure according to the present invention and first and second partition plates will be described with reference to the drawings.

  1, 2 and 3 show an example of a container designed as a container for storing and transporting machine parts and the like. This container includes a bottom wall 1 having a planar rectangular shape, and four side walls 2A, 2B, 3A and 3B which are erected from four peripheral edges (four sides) of the bottom wall 1. The front side wall 2A and the rear side wall 2B are in an opposing relationship, and the left side wall 3A and the right side wall 3B are in an opposing relationship. The lengths of the front and rear side walls 2A and 2B are set to about 350 to 370 mm, while the lengths of the left and right side walls 3A and 3B are set to about 370 to 390 mm, and the front and rear side walls 2A and 2B are located on the short side of the container. The left and right side walls 3A and 3B constitute the long side of the container. The container is configured as a container having an accommodation space surrounded by the four side walls 2A to 3B and having an upper portion of the accommodation space opened. This container is integrally formed of a resin that is made opaque by mixing a colorant into a synthetic resin such as polypropylene. Although not described in detail, this container is designed as an SN container in which a plurality of containers can be stacked vertically in a stacking state or a nesting state. Therefore, at the time of nesting, the lower half of the upper container is placed in the upper half of the container accommodation space in the height direction.

  As shown in FIGS. 1 and 2, on the inner wall surface 21 of the front and rear side walls 2A and 2B, a plurality of holding ridges 22 and 23 (this example) in the lower half region of each inner wall surface 21 Then, Article 26) is projected. These holding ridges 22 and 23 extend in a substantially vertical direction and are arranged side by side at substantially equal intervals in the left-right direction. Therefore, a guide groove 24 extending in a substantially vertical direction is constructed between two adjacent holding protrusions.

  As shown in FIGS. 1 and 3, on the inner wall surfaces 31 of the left and right side walls 3A and 3B, a plurality of holding protrusions 32 and 33 (in this example, in the lower half region of each inner wall surface 31). Article 28) is projected. These holding protrusions 32 and 33 extend in a substantially vertical direction, and are arranged at substantially equal intervals in the front-rear direction. Therefore, a guide groove 34 extending in a substantially vertical direction is constructed between two adjacent holding protrusions. In the present embodiment, the vertical direction means a direction orthogonal to the bottom wall 1.

  As shown in FIG. 6, the holding protrusions (22, 23, 32, 33) provided on the front, rear, left and right side walls 2 </ b> A to 3 </ b> B extend from the base end (lower end) to the front end (upper end). The thickness or width is continuously changed so as to be tapered toward the front. For this reason, the space | interval W between the two holding protrusions which construct each guide groove (24, 34) is gradually widened toward the upper end from the lower end of the guide groove.

  As shown in FIG.2 and FIG.3, although the base end part (lower end part) of the holding protrusion (22, 23, 32, 33) of each side wall inner wall surface is all aligned with the upper surface position of the bottom wall 1, As a result of the vertical length of the holding ridges being long and short, the inner wall surfaces 21, 31 of each side wall have holding ridges 22, 32 with a high upper end position and holding ridges 23, 33 with a lower upper end position. Existing. In the present embodiment, holding ridges 22 or 32 having a high upper end position are arranged every 5 pitches as a groove pitch, and between the holding ridges 22 or 32 having a high upper end position, the holding ridges 23 having a low upper end position or Four 33 are arranged. The regular height of the upper end position of the holding protrusion is useful for identifying or selecting the guide groove when inserting both longitudinal ends of the partition plate into the specific guide groove 24 or 34.

  Furthermore, in the middle position between the two holding protrusions 22 or 32 having a high upper end position, an inverted triangular mark M is engraved or recessed on the inner wall surfaces 21 and 31 of the side walls. The mark M indicates the position of the middle (third) guide groove of the five guide grooves 24 or 34 existing between the two holding protrusions 22 or 32 having a high upper end position. The inverted triangular mark M is also useful for identifying or selecting the guide groove when inserting both longitudinal ends of the partition plate into the specific guide groove 24 or 34.

  As shown in FIGS. 4A and 4B, the first partition plate 40 held between the front and rear side walls 2A and 2B is slightly smaller than the distance between the inner wall surfaces 21 and 21 of the front and rear side walls. It has a short longitudinal length (full length). The partition plate 40 is formed with a plurality of teeth 41 (26 in this example) extending in the height direction in a comb-tooth shape, and the upper end of the partition plate is interposed between the teeth 41. Comb grooves 42 serving as concave portions for combination opened on the edge side, and thin connection portions 43 that are connected to the adjacent tooth portions 41 below the comb tooth grooves 42 are formed. The comb-tooth groove 42 and the thin-walled connecting portion 43 provide a fitting structure for allowing the second partition plate 50 described later to be combined with the first partition plate 40 in a cross shape.

  The plate thickness at both longitudinal ends 44, 44 of the first partition plate 40 is set to be generally smaller than the interval between adjacent holding projections on the front and rear side walls 2A, 2B, and each end 44 has two holding projections. It is possible to enter the guide groove 24 between them. In addition, a total of three pressing portions 45a, 45b, and 45c are projected from both ends in the longitudinal direction of the first partition plate on both sides in the plate thickness direction. That is, the lower pressing portion 45a and the upper pressing portion 45c are provided on one side of both ends in the thickness direction of each end portion 44, and the middle pressing portion 45b is provided on the other side (opposite side). It has been. The lower pressing portion 45a is disposed at a lower position in the height direction of the partition plate, the upper pressing portion 45c is disposed at an upper position in the height direction of the partition plate, and the middle pressing portion 45b is in the middle in the height direction. It arrange | positions in the intermediate height position of the low-order and high-order press parts 45a and 45c. The three pressing portions 45a to 45c in each of the longitudinal end portions 44, 44 are the holding ridges 22 or the respective contact portions that are in contact with each other when the end portions 44 are arranged between two adjacent holding ridges. The amount of protrusion from the partition plate main body is set so that the side surface of 23 can be pressed in the thickness direction of the partition plate 40.

  As shown in FIGS. 5A and 5B, the second partition plate 50 held between the left and right side walls 3A and 3B is slightly shorter than the distance between the inner wall surfaces 31 and 31 of the left and right side walls. It has a longitudinal length (full length). A plurality of teeth 51 (24 in this example) extending in the height direction are formed in a comb-tooth shape on the partition plate 50, and the lower end of the partition plate is interposed between the teeth 51. A comb-tooth groove 52 is formed as a combination recess opened on the edge side. Further, a thin plate-like portion 53 is formed above the comb tooth groove 52. The comb-tooth groove 52 and the thin plate-like portion 53 provide a fitting structure that enables the second partition plate 50 to be combined with the first partition plate 40 in a cross shape.

  The plate thickness at both longitudinal ends 54, 54 of the second partition plate 50 is set to be generally smaller than the interval between adjacent holding projections on the left and right side walls 3A, 3B, and each end 54 has two holding projections. It is possible to enter the guide groove 34 between them. In addition, a total of three pressing portions 55a, 55b, and 55c project from both ends 54, 54 in the longitudinal direction of the second partition plate on both sides in the plate thickness direction. That is, the lower pressing portion 55a and the upper pressing portion 55c are provided on one side of both ends 54 in the plate thickness direction, and the middle pressing portion 55b is provided on the other side (opposite side). It has been. The lower pressing portion 55a is disposed at a lower position in the height direction of the partition plate, the upper pressing portion 55c is disposed at an upper position in the height direction of the partition plate, and the middle pressing portion 55b is in the middle in the height direction. It arrange | positions in the intermediate height position of the low-order and high-order press parts 55a and 55c. The three pressing portions 55a to 55c in each of the longitudinal end portions 54, 54 are the holding ridges 32 or the respective contact portions that are in contact with each other when the end portions 54 are arranged between two adjacent holding ridges. The amount of protrusion from the partition plate body is set so that the 33 side surfaces can be pressed in the thickness direction of the partition plate 50.

  The first and second partition plates 40 and 50 are integrally formed of a resin that is made opaque by mixing a colorant into a synthetic resin such as polypropylene. The partition plates 40 and 50 made of polypropylene can be curved to some extent with respect to an external force acting in the thickness direction by setting the plate thickness to be moderately thin, and exhibit rebound resilience with respect to the external force.

  Next, an operation and the like when the first and second partition plates 40 and 50 are attached to the container will be described. In this container, as shown by phantom lines in FIG. 1, after the first partition plate 40 is mounted between the front and rear side walls 2 </ b> A and 2 </ b> B, the second partition plate 50 crosses the first partition plate 40 in a cross shape. It is mounted between the left and right side walls 3A and 3B.

  First, in order to mount the first partition plate 40 between the front and rear side walls 2A and 2B, the partition plate 40 erected so as to be parallel to the left and right side walls 3A and 3B is directed to the bottom wall 1 from above the container. Insert it halfway into the container. Then, for example, as shown in FIG. 6, the longitudinal end portions 44, 44 of the partition plate 40 are in the specific guide grooves 24 of the side wall inner wall surface 21 corresponding to each of them (in FIG. 6, the two holding protrusions 23, 23 The left and right partition positions of the container storage space by the first partition plate 40 are determined.

  When the partition plate 40 is inserted, a force is generated that resists the insertion. However, when the partition plate 40 is pushed in until the lower end edge of the partition plate 40 is in contact with the bottom wall 1 by overcoming the resistance force, each end 44 of the partition plate 40 The pressing portions 45a to 45c provided on both sides respectively press the corresponding holding protrusions 23 in the plate thickness direction. As the reaction, each end 44 of the partition plate is clamped by the two holding ridges 23 and 23 and fixed in the guide groove 24 between the holding ridges.

  More specifically, as shown in FIG. 6, the lower pressing portion 45 a and the upper pressing portion 45 c provided on one side of each end 44 press the holding protrusion 23 in contact therewith, and each end 44. The intermediate pressing portion 45b provided on the other side of the pressing member presses the holding protrusion 23 that contacts the intermediate pressing portion 45b. Each end 44 receives a reaction from the holding protrusion 23 at each of the pressing portions 45a to 45c. The direction of the reaction received by the lower and upper pressing parts 45a and 45c is opposite to the direction of the reaction received by the middle pressing part 45b, and the middle pressing part 45b is intermediate between the lower and upper pressing parts 45a and 45c. Therefore, the three forces (reactions) exerted on the end 44 of the partition plate sandwiched between the two holding protrusions 23, 23 are the end 44 of the partition plate. Is bent and deformed into an S shape or a wave shape. On the other hand, each end 44 of the partition plate exhibits rebound resilience so as to keep its original shape against the force to bend and deform into the S-shape or wave shape, and therefore, based on the rebound resilience. Stretched strongly in the thickness direction between the two holding ridges 23, 23. As a result, the holding pressure of the longitudinal end portion 44 of the partition plate by the two holding ridges 23, 23 becomes strong.

  The procedure for mounting the second partition plate 50 between the left and right side walls 3A, 3B is the same as that for the first partition plate 40. That is, the partition plate 50 erected so as to be parallel to the front and rear side walls 2A and 2B is forcibly inserted halfway into the container from the top of the container toward the bottom wall 1. Then, the longitudinal direction both ends 54 and 54 of the partition plate 50 enter into the specific guide groove 34 (for example, between the two holding protrusions 33 and 33) of the side wall inner wall surface 31 corresponding to each, and the 2nd partition The front and rear partition positions of the container storage space by the plate 50 are determined. Then, when the partition plate 50 is pushed in until the lower edge of the partition plate 50 is in contact with the bottom wall 1, the pressing portions 55 a to 55 c provided on both sides of each end portion 54 of the partition plate plate the corresponding holding protrusion 33. Press in the thickness direction. As the reaction, each end 54 of the partition plate is clamped by the two holding protrusions 33 and 33 and fixed in the guide groove 34 between the holding protrusions. At that time, based on the pressing action of the three pressing portions 55a, 55b and 55c provided on both sides of each end portion 54, three reaction reactions are received from the two holding ridges 33, 33, resulting in that. Each end 54 of the partition plate strungs strongly in the thickness direction between the two holding ridges 33, 33. As a result, the holding end of the longitudinal end 54 of the partition plate by the two holding ridges 33, 33 is held. It is the same as the case of the first partition plate 40 that it becomes strong.

  When the second partition plate 50 is inserted into the container, the specific thin-walled connecting portion 43 of the first partition plate 40 enters the specific comb tooth groove 52 of the second partition plate 50, and the first partition When the thin plate-like portion 53 of the second partition plate 50 enters the specific comb tooth groove 42 of the plate 40, a cross-like cross fitting between the first and second partition plates 40 and 50 is realized. For this reason, the other partition plate does not obstruct one partition plate being held between the opposing side walls.

  As described above, when the longitudinal end portion 44 of the first partition plate 40 enters and is placed in the specific guide groove 24, the holding pressure by the two holding protrusions 23 and 23 that constitute the guide groove 24. Acts in the plate thickness direction orthogonal to the longitudinal direction of the partition plate 40. For this reason, even if the side end surfaces of the longitudinal end portions 44, 44 are not in contact with or pressed against the inner wall surfaces 21 of the opposing side walls 2A, 2B (that is, the partition plate 40 between the opposing side walls 2A, 2B). However, the partition plate 40 is stably held between the two opposing side walls 2A and 2B. This is also true when the second partition plate 50 is held between the two opposing side walls 3A and 3B. Therefore, according to the present embodiment, regardless of whether the distance between the inner wall surfaces of the opposing side walls of the container and the longitudinal length of the partition plate are appropriately matched, the dimensional tolerances of the container and the partition plate are affected. Without being done, the partition plates 40 and 50 can be stably held between the opposing side walls of the container.

  In the present embodiment, the vertical lengths of the holding ridges are such that the upper end positions of the plurality of holding ridges (22, 23, 32, 33) arranged side by side on the inner wall surfaces 21, 31 of the side walls are of two types. In addition, the holding ridges 22 and 32 having a high upper end position are regularly arranged at predetermined intervals. In addition, on the inner wall surfaces 21 and 31 of the side walls, an inverted triangular mark M is provided at an intermediate position between the two holding protrusions having a high upper end position. Therefore, a guide groove lined up on the inner wall surface of the side wall of the holding ridge as a guide, with a difference in height at the upper end position of the holding ridge and a mark M positioned between the two holding ridges having a high upper end position. Each of 24 and 34 can be identified or selected. As a result, it becomes easier to determine which of the guide grooves in which the longitudinal ends of the partition plates 40 and 50 are to be lined, and as a result, the operation of mounting the partition plates 40 and 50 between the opposing wall surfaces of the container is difficult. It becomes easy to do.

  (Modification) The shape of the mark M is not limited to an inverted triangle, and may be a quadrilateral or other polygonal shape or a circular shape. Moreover, the mark M may be provided as a convex part which protrudes from the inner wall surfaces 21 and 31 of a side wall.

The top view of SN container which is an example of a container. Sectional drawing in the AA of FIG. 1 which shows the inner wall face of the front side wall of a container. Sectional drawing in the CC line of FIG. 1 which shows the inner wall face of the left side wall of a container. The 1st partition plate is shown, (A) is a front view, (B) is a right view. The 2nd partition plate is shown, (A) is a front view, (B) is a right view. The figure which shows the outline | summary when arrange | positioning the edge part of a partition plate between the holding protrusions of one side wall.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Bottom wall, 2A ... Front side wall, 2B ... Rear side wall, 3A ... Left side wall, 3B ... Right side wall, 21 ... Inner wall surface of front and rear side walls, 22, 23 ... Holding protrusion, 24 ... Guide groove 31 ... Inner wall surfaces of left and right side walls, 32, 33 ... Holding projections, 34 ... Guide grooves, 40 ... First partition plate, 44 ... End portions in the longitudinal direction, 45a, 45b, 45c ... Pressing portions, 50 ... Second 54 ... Longitudinal ends, 55a, 55b, 55c ... pressing part, M ... mark.

Claims (4)

A structure for holding a partition plate between the opposing side walls of a container having a bottom wall and two opposing side walls,
Each inner wall surface of the opposing side wall of the container is provided with a plurality of holding protrusions that construct guide grooves extending in a direction substantially orthogonal to the bottom wall,
Each of the both longitudinal ends of the partition plate is formed so as to be able to enter and be placed in a guide groove constructed between two adjacent holding protrusions, and on both sides in the plate thickness direction of each of the both longitudinal ends. In the holding structure of the partition plate in the container provided with a pressing portion for pressing the two adjacent holding protrusions in the thickness direction of the partition plate,
The lower end portion at both longitudinal ends of the partition plate is a relatively thick lower end thick portion, the upper portion of the lower end thick portion is a thin portion, and the thin portion is disposed at the center in the thickness direction of the lower end thick portion. And
The pressing portion comprises a lower pressing portion and an upper pressing portion arranged on one side of both sides of the thin portion in the thickness direction, and a middle pressing portion arranged on the other side,
The lower pressing portion is disposed at a position near the lower end of the thin portion,
The upper pressing part is disposed at a position near the upper end of the thin part,
The structure for holding a partition plate in a container , wherein the middle pressing portion is disposed between the lower pressing portion and the upper pressing portion and closer to the lower pressing portion . A thicker portion closer to the end than the thin-walled portion is provided at a position closer to both ends in the longitudinal direction that cannot enter the guide groove in the partition plate, and a lower end portion of the thick-walled portion near the end is disposed in the longitudinal direction of the partition plate. 2. The container according to claim 1 , wherein the thin wall portion is projected in a longitudinal direction of the partition plate from a center in a thickness direction of the thick portion near the end portion . Partition plate holding structure.   The plurality of holding ridges constituting the guide groove are provided so that the interval (W) between the holding ridges gradually increases from the proximal end portion toward the distal end portion. The holding structure of the partition plate in the container according to 2.   A guideline for identifying or selecting a guide groove into which the longitudinal end portion of the partition plate should enter in the vicinity of the front end portion of the guide groove constructed between the plurality of holding protrusions on each inner wall surface of the opposing side wall. The holding structure of the partition plate in the container according to any one of claims 1 to 3, wherein a mark is provided.

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