JP2013193760A - Workpiece support member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a workpiece support member able to transport the workpiece more safely.SOLUTION: Each of corner members 3 set correspondingly to the four corners of a workpiece W includes: a placing portion 11 supporting the lower side of the workpiece W; a support projection 12 opposite the outer peripheral faces of a workpiece W placed on the placing portion 11 and having an approximately L shape in a plan view; a leg portion 21 projecting downward from the placing portion 11 along the support projection 12, and supported on the upper face of the support projection 12 of a lower corner member 3 in a state of the stack of the corner members 3; a pair of locking projections 28 projecting sidewise and downward from both ends of the leg portion 21 in the extending direction thereof; and a connection frame 31 extending so as to connect the upper parts of the pair of locking projections 28. The connection frame 31 has a float preventing portion 33 in the middle position in the direction in which the connection frame 31 extends in the state of the stack of the corner members 3, wherein the float preventing portion 33 is able to contact with the upper surface of a workpiece W placed on the placing portion 11 of a lower corner member 3.

Description

  The present invention relates to a workpiece support member used for transporting a substantially rectangular plate-shaped workpiece.

  Conventionally, when a work is placed on a pallet that can be transported with a forklift or the like, the work is accommodated in order to prevent the work from falling off or to be protected, and the position of the pallet is prevented from being displaced. It is known to use installed trays. In addition, when the work has a substantially rectangular plate shape, there is a technique of holding the work by attaching support members that can individually support the four corners of the work to the pallet (for example, Patent Document 1). reference.).

  In the said technique, support members are comprised so that it can stack up and down (stack). By using such a support member, it is possible to carry and store the workpieces stacked one above the other. This improves transportation and storage efficiency, and saves resources, lowers costs, and saves storage space when not in use, compared to a tray that accommodates the entire workpiece. be able to.

JP 2006-32978 A

  By the way, when a workpiece is transported using a support member as disclosed in Patent Document 1, the workpiece jumps between the support members stacked up and down due to vibration or impact during transportation. In some cases, the workpiece or the like may be damaged.

  On the other hand, it can be considered that the upper support member is brought into contact with the upper surface of the work supported by the lower support member to prevent the work from being lifted. However, for example, when a large number of workpieces are stacked and transported, a relatively large load is applied to the upper surface of the relatively lower workpiece from the support member that prevents the workpiece from lifting. There is a concern that the workpiece may be damaged due to this.

  The present invention has been made in order to solve the above-described problems and the like, and an object thereof is to provide a workpiece support member that can transport the workpiece more safely.

  In the following, each means suitable for solving the above-mentioned purpose will be described in terms of items. In addition, the effect etc. peculiar to the means to respond | correspond as needed are added.

Means 1. It is a support member that can be supported in a state where the work is separated from the installation surface by being installed corresponding to each corner part of the work having a substantially plate shape,
A placement unit capable of supporting the lower surface of one corner of the workpiece;
Projecting upward from the mounting portion to form a substantially L shape in plan view, and a supporting convex portion facing the outer peripheral surface of the workpiece placed on the mounting portion;
In the stacked state of the support members in which the support members are stacked vertically in the same direction, projecting downward from the mounting portion along the support convex portion to form a substantially L shape in the bottom view, A leg portion supported in contact with an upper surface of the support convex portion;
The workpiece that extends so as to connect between the one end side and the other end side of the leg portion, and is placed on the placement portion of the lower support member in the stacked state of the support members A connecting bar facing the upper surface of the
The connecting bar includes an anti-lifting portion that comes into contact with the upper surface of the work and at both ends in the extending direction of the connecting bar when the work and the support member are relatively inclined at an intermediate position in the extending direction of the connecting bar. And a contact avoiding portion whose lower surface is located above a lower end portion of the lifting prevention portion.

  According to the means 1, the support member includes the lifting prevention portion that can contact the upper surface of the workpiece placed on the placement portion of the lower support member in the stacked state of the support members. For this reason, it is possible to prevent the workpiece from being lifted, and it is possible to avoid a situation in which the workpiece or the like is damaged due to the workpiece rattling up and down during the conveyance or the like of the workpiece. Further, the lifting prevention portion is provided at an intermediate position in the extending direction of the connecting bar, and both end portions in the extending direction of the connecting bar are located above the lower end portion of the lifting preventing part. That is, it is relatively easy to deform (follow-up) while avoiding a situation in which both ends of the connecting bar connected to the leg portion and the like and relatively hard to deform are pressed against the work and the work is damaged. Lifting of the workpiece while suppressing the application of a relatively large force causing damage to the workpiece by enabling the lifting prevention portion formed at the intermediate position to contact the workpiece. Can be prevented. Therefore, the workpiece can be transported more safely.

Mean 2. Comprising a connecting wall portion for connecting the mounting portion and the connecting bar,
The work support member according to claim 1, wherein an opening is formed in the connecting wall portion so as to be adjacent to the lifting prevention portion.

  According to the means 2, by removing a portion of the connecting wall portion adjacent to the lifting prevention portion, the lifting prevention portion is more easily elastically deformed in a follow-up manner. Therefore, the buffer effect by the elasticity of the floating prevention part can be further increased, and the load on the workpiece can be further reduced. Furthermore, since the lifting prevention portion and the connecting wall portion are not directly connected, it is possible to configure so that stress when supporting the workpiece placed on the placement portion does not act on the lifting prevention portion as much as possible. Therefore, the effect of preventing the workpiece from being damaged is further exhibited. Further, the weight can be reduced by the amount of the opening.

  Means 3. The work support member according to means 1 or 2, wherein the lifting prevention portion is formed by bending so that an intermediate position in the extending direction of the connecting bar is convex downward.

  According to the means 3, it is possible to make the lifting prevention portion more easily elastically deformed in a follow-up manner than in the case where the lifting prevention portion is configured by forming a thick portion on the connecting bar.

Means 4. In the bent portion of the support convex portion having a substantially L shape in plan view, an inner surface that can be in contact with the outer peripheral surface of the workpiece is recessed outward, so that the outer peripheral surface of the workpiece is the inner surface of the support convex portion. Is formed, an accommodation recess that can accommodate the corner portion of the workpiece is formed,
4. The means according to claim 1, wherein a cutout portion is formed in a lower portion of a portion of the leg portion that can be positioned above the receiving recess when the support member is stacked. Support member for workpieces.

  According to the means 4, by forming the accommodating concave portion in the bent portion of the support convex portion, it is possible to avoid a situation in which the corner portion of the workpiece collides with the support convex portion and is damaged. In addition, even when the upper support member among the stacked support members tilts inward (inner side of the workpiece) or slightly deforms so that the legs tilt inward, By forming a notch in the lower part of the leg, the situation where the lower end of the leg is pressed against the upper surface of the corner of the work housed in the housing recess of the lower support member is avoided. can do. Therefore, the effect of suppressing damage to the workpiece and the like can be achieved more reliably. Moreover, the notch part is not formed in the upper part which is a connection part with a mounting part among leg parts. For this reason, the strength of the leg portion and by extension, the support member can be ensured.

It is a perspective view of a workpiece conveyance unit. It is a perspective view of a pallet. It is a perspective view which shows the upper surface side of a corner member. It is a perspective view which shows the lower surface side of a corner member. It is a perspective view which shows the upper surface side of an attachment member. It is a perspective view which shows the lower surface side of an attachment member. It is a perspective view which shows the state which attached the corner member to the attachment member attached to the pallet. It is a perspective view which shows the state which mounted the workpiece | work with respect to the corner member shown in FIG. 7, and accumulated the corner member. It is a perspective view at the time of seeing the corner member etc. which are shown by FIG. 8 from the outside. It is a top view of the corner member etc. which are shown by FIG. It is a perspective view containing the AA line cross section of FIG. It is a perspective view containing the BB line cross section of FIG. It is a perspective view containing the CC line cross section of FIG. It is a perspective view which shows the corner member in another embodiment.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIG. 1 and the like, a workpiece carrying unit 1 used for carrying or storing a workpiece W (for example, a solar panel) having a substantially rectangular plate shape includes a pallet 2 that can be carried by a forklift, and a workpiece W By being attached to the pallet 2 corresponding to each of the four corners, a corner member 3 is provided as a workpiece support member capable of supporting the workpiece W in a state of being separated from the upper surface of the pallet 2. In the present embodiment, the workpiece W is supported by the four corner members 3 respectively installed corresponding to the four corners of the workpiece W. Moreover, in this embodiment, as shown in FIG. 1, it is comprised so that corner members 3 can be stacked up and down in the same direction (stacked), and by this, several workpiece | work W is stacked and conveyed.・ Can be stored.

  As shown in FIGS. 3, 4, 10, and the like, the corner member 3 has a substantially fan shape (substantially quarter-circular shape) in a plan view and can be placed in contact with and supported by the lower surface of one corner portion of the workpiece W. The outer peripheral surface of the workpiece W placed on the placement portion 11 and projecting upward from two linear portions extending substantially orthogonal to each other on the outer edge of the portion 11 and the placement portion 11 and having a substantially L shape in plan view And a support convex portion 12 facing each other. The corner member 3 of this embodiment is integrally formed of polypropylene. Hereinafter, for the sake of convenience, the minor angle side in the plan view of the support convex portion 12 will be described as “inside” and the dominant angle side will be described as “outside”.

  As shown in FIGS. 3, 4, and 9, the support convex portion 12 extends continuously along two straight portions of the placement portion 11, and has a predetermined thickness in the outer peripheral direction of the placement portion 11. The frame 13 and a support base 14 that bulges inward from the inner surface of the base frame 13 below the upper surface of the base frame 13 have a step shape. The protruding length (the distance from the upper surface of the mounting unit 11 to the upper surface of the supporting table 14) of the supporting table 14 from the mounting unit 11 is slightly longer than the thickness of the workpiece W. In the present embodiment, the outer peripheral surface of the workpiece W placed on the placement portion 11 is configured to be able to contact the inner surface of the support base 14 in the support convex portion 12. Hereinafter, a portion from the bent portion 16 of the support convex portion 12 to one end portion (the left end portion in FIG. 3) is referred to as a “first wing portion 17”, and the bent portion 16 to the other end portion (in FIG. 3). A portion up to the right end) is referred to as a “second wing portion 18”.

  Further, although the support base 14 is formed on each of the first wing portion 17 and the second wing portion 18, the support pedestal 14 is formed at the boundary portion (the bent portion of the base frame 13) between the first wing portion 17 and the second wing portion 18. Is not formed. Thereby, the outer peripheral surface of the workpiece W placed on the placement portion 11 is formed on the bent portion 16 of the support convex portion 12 by the inner surface of the support base 14 of the first wing portion 17 and the support base of the second wing portion 18. An accommodation recess 19 that can accommodate a corner portion of the workpiece W is formed in a state of contacting the inner surface of 14.

  On the lower surface side of the mounting portion 11, a leg portion 21 that protrudes downward from the mounting portion 11 along the support convex portion 12 and has a substantially L shape when viewed from the lower surface is provided. As shown in FIGS. 4 and 13, the leg portion 21 protrudes downward from the lower surface of the mounting portion 11 along the wall portion constituting the inner surface of the support base 14, and is formed in a substantially L shape when viewed from the lower surface. A leg wall portion 22; a lower wall portion 23 extending outward from a lower edge portion of the leg wall portion 22; and a support wall portion 24 projecting downward along the lower edge portion of the leg wall portion 22. Yes. As shown in FIG. 4, the leg wall portion 22 includes a support base 14 of the first wing portion 17 and a support base 14 of the second wing portion 18 that are continuously extended along the inner surface of the base frame 13. In the region corresponding to the bent portion 16 of the support convex portion 12, it extends without interruption along the inner surface of the support base 14 when it is assumed. Further, as shown in FIG. 9, a reinforcing wall portion 25 that vertically connects between the wall portion constituting the upper surface of the support convex portion 12 and the lower wall portion 23 of the leg portion 21 is provided on the support convex portion 12. Are provided at predetermined intervals in the extending direction. In addition, as shown in FIG. 11 etc., the inner surface of the support wall part 24 of this embodiment is located a little outside rather than the inner surface of the leg wall part 22. As shown in FIG.

  In the present embodiment, in the vertical direction, the distance between the lower surface of the lower wall portion 23 and the lower edge portion of the support wall portion 24 (the length extending downward of the support wall portion 24) is the upper surface of the support base 14. And the distance from the upper surface of the base frame 13 is substantially equal (slightly shorter). In addition, the corner member 3 is located on the inner peripheral side of the workpiece W placed on the placement portion 11 among the outer edges of the placement portion 11 and is a side portion on which the support convex portion 12 is not formed (hereinafter referred to as the side portion). , Referred to as “curved portion 11 a”) and a vertical plane including a straight line passing through the bent portion 16 of the support convex portion 12.

  As shown in FIGS. 9, 11 to 13, etc., when the corner members 3 are stacked, the upper corner member 3 with respect to the upper surface of the base frame 13 of the support convex portion 12 of the lower corner member 3. The lower surface of the lower wall portion 23 comes into contact, and the upper corner member 3 is thereby supported by the lower corner member 3. Further, the lower edge portion of the support wall portion 24 of the upper corner member 3 substantially contacts the upper surface of the support base 14 of the lower corner member 3, and the outer surface of the support wall portion 24 of the upper corner member 3 is lower This is opposed to the inner surface of the base frame 13 of the support convex portion 12 of the corner member 3 (abuts when the corner members 3 are stacked in a straight line without positional deviation). As a result, the upper corner member 3 is prevented from falling off from the lower corner member 3.

  Furthermore, in this embodiment, in the support wall portion 24 of the leg portion 21, in a stacked state of the corner members 3, a portion that can be positioned above the accommodating recess 19 of the lower corner member 3 is provided with a notch portion. 27 is formed. That is, the leg wall portion 22 also extends to a portion corresponding to the housing recess 19 along the inner surface of the support base 14 of the first wing portion 17 and the second wing portion 18 on the lower surface side of the placement portion 11. When the corner members 3 are stacked, the support wall portion 24 that protrudes downward along the lower edge portion of the leg wall portion 22 is stretched over the accommodation recess 19 of the lower corner member 3. Will be extended. Therefore, as described above, the accommodation recess 19 is configured to accommodate the corner portion of the workpiece W, and the height of the support base 14 is slightly higher than the thickness of the workpiece W. Even if it exists, the upper surface of the corner part of the workpiece | work W which entered into the accommodation recessed part 19 of the lower corner member 3 and the lower edge part of the support wall part 24 of the upper corner member 3 come apart vertically. Yes. In addition, the notch part 27 of this embodiment is formed only in the lower part of the support wall part 24, and the support wall part 24 is interrupted by the bending part of the leg part 21 in the extending direction of the leg part 21. Without being continuously extended.

  Further, as shown in FIG. 4 and the like, there are provided a pair of locking projections 28 that project laterally and downward from the lower ends of both ends of the leg 21 in the extending direction. Each locking projection 28 has a substantially box shape that opens upward, and protrudes downward from the lower edge of the support wall 24. In particular, the protruding length downward from the lower wall portion 23 of each locking convex portion 28 is configured to be substantially the same as the protruding length from the mounting portion 11 of the support convex portion 12 (base frame 13). . Furthermore, among each latching convex part 28, the surface on the inner peripheral side of the workpiece W supported by the mounting part 11 (a surface facing the central part side of the curved part 11a of the mounting part 11, hereinafter referred to as "locking surface"). 28a ") extend on virtual planes extending in the same vertical direction as the inner surfaces of the support bases 14 formed on the first wing part 17 and the second wing part 18, respectively. In addition, each locking projection 28 is provided at a position deviated from the supporting projection 12 when the corner member 3 is viewed in plan, and the supporting projection 12 exists above the locking projection 28. It is supposed not to.

  For this reason, as shown in FIG. 9, when the corner members 3 are stacked, the engaging convex portion 28 of the upper corner member 3 does not interfere with the supporting convex portion 12 of the lower corner member 3, and It will be located in the side of the both ends of the extension direction of the support convex part 12 of the corner member 3 of the side. Accordingly, the upper surface of the base frame 13 of the support convex portion 12 of the lower corner member 3 and the lower surface of the lower wall portion 23 of the leg portion 21 of the upper corner member 3 can be reliably brought into contact with each other. Furthermore, in the stacked state of the corner members 3, the engagement of the pair of locking projections 28 of the upper corner member 3 with respect to the outer peripheral surface of the workpiece W placed on the placement portion 11 of the lower corner member 3. The stop surface 28a faces (substantially abuts).

  Further, the corner member 3 is provided with a connecting bar 31 extending so as to connect the upper side portions of the locking surfaces 28a of the pair of locking projections 28. The connecting bar 31 extends in an arc shape along the curved portion 11 a of the mounting portion 11. As described above, each locking projection 28 is provided on the side of both ends in the extending direction of the leg portion 21 that is substantially L-shaped when viewed from the bottom surface. The connecting bars 31 connected in a circular arc shape along the curved portion 11 a of the mounting portion 11 are positioned closer to the inner peripheral side of the workpiece W placed on the mounting portion 11 than the mounting portion 11. .

  Furthermore, a lifting prevention portion 33 protruding downward is provided at a portion including the central portion in the extending direction of the connecting bar 31. More specifically, the connecting bar 31 includes a contact avoiding portion 32 extending in the horizontal direction along the curved portion 11a of the mounting portion 11 from the upper side portion of the locking surface 28a of each locking projection 28, and Each of the contact avoiding portions 32 includes an inclined portion 34 that extends downwardly from the leading edge, and a contact portion 35 that extends in the horizontal direction so as to connect the distal ends of the pair of inclined portions 34. The pair of inclined portions 34 and the contact portion 35 constitute a floating prevention portion 33. The lower surface of the lifting prevention portion 33 is substantially at the same height as the lower edge portion of the support wall portion 24.

  Further, the floating prevention portion 33 is opposed to the upper surface of the workpiece W placed on the placement portion 11 of the lower corner member 3 in the stacked state of the corner members 3. Therefore, when at least the workpiece W and the corner member 3 are relatively inclined, the upper surface of the workpiece W comes into contact with the lower surface of the contact portion 35 of the lifting prevention portion 33. On the other hand, the contact avoiding portion 32 that is a portion of both ends in the extending direction of the connecting bar 31 is located above the contact portion 35 of the lifting prevention portion 33, so that it is separated upward from the upper surface of the workpiece W. doing. Furthermore, even if the corner member 3 is tilted inward, even if the lifting prevention portion 33 and the upper surface of the work W are pressed against each other, the contact avoidance portion 32 and the work W do not come into contact with each other.

  Further, the side of the connecting projection 31 on the bent portion 16 side (the outer peripheral side of the workpiece W placed on the placement portion 11) of the support convex portion 12 is connected to the curved portion 11 a of the placement portion 11. A connecting wall portion 37 is provided. In the connection wall portion 37, an opening 38 is formed so as to be adjacent to a portion in the vicinity of the connection portion between the floating prevention portion 33 (the contact portion 35 and the inclined portion 34) and the inclined portion 34 of the contact avoiding portion 32. Has been. The opening 38 has a substantially trapezoidal shape when the connecting wall portion 37 is viewed from the front. However, the formation range of the opening 38 does not reach the upper part of the connecting wall 37 that is connected to the curved portion 11 a of the mounting portion 11.

  In addition, as shown in FIG. 3, the connecting bar 31 protrudes upward from a side portion adjacent to the opening 38 or a side portion on the inner peripheral side of the work W placed on the placement portion 11. Reinforcing ribs 36 are provided. The reinforcing rib 36 prevents a situation in which the connecting bar 31 is easily broken by forming a crack or the like in the side portion of the connecting bar 31. Furthermore, in this embodiment, the side part adjacent to the opening part 38 of the connecting bar 31 is slightly cut away, so that the part (the lifting prevention part 33 and the connection part with the inclined part 34 of the contact avoiding part 32) is connected. The width of the portion in the vicinity of the portion is slightly smaller. Thereby, it can prevent that the site | part in which the reinforcement rib 36 was formed becomes difficult to elastically deform.

  As shown in FIGS. 1 and 2, the pallet 2 has a substantially rectangular shape larger than the outer peripheral shape (outer dimension) of the workpiece W in plan view, and includes a fork insertion portion 41 into which a fork of a forklift can be inserted. ing. Further, in the vicinity of the four corners of the upper surface of the pallet 2, mounting members 44 that protrude upward are provided.

  As shown in FIGS. 5 and 6, the attachment member 44 has a substantially sector shape (substantially quadrant shape) in plan view, and is below the lower surface of the locking projection 28 of the corner member 3 and the support wall portion 24 in the vertical direction. A base plate 45 having a thickness equal to or greater than the distance between the edge portions, and a frame portion 46 that protrudes upward from two straight portions extending substantially orthogonal to each other on the outer edge of the base plate 45 to form a substantially L shape in plan view. And a cylindrical mounting boss 47 projecting downward from the lower surface side of the base plate 45. A locking accommodating portion 48 formed by cutting the boundary portion together with the frame portion 46 is formed at a boundary portion between each straight portion and the curved portion of the outer edge of the base plate 45.

  On the other hand, as shown in FIGS. 2, 12, etc., boss holes 42 into which the mounting bosses 47 of the mounting member 44 can be inserted are formed in the vicinity of the four corners of the upper surface of the pallet 2. The attachment member 44 is attached to the pallet 2 by inserting the attachment boss 47 into the boss hole 42 in such a direction as to expand toward the inner peripheral side of the pallet 2. In addition, as shown in FIGS. 7, 9, 11, etc., with respect to the mounting member 44 attached to the pallet 2, the pair of locking projections 28 are caused to enter the pair of locking housing portions 48, The corner member 3 is placed. As a result, the lower wall portion 23 of the corner member 3 is in contact with and supported by the upper surface of the frame portion 46, the mounting portion 11 extends in a substantially horizontal direction, and the outer surface of the support wall portion 24 is formed on the inner surface of the frame portion 46. Are opposed to each other, and the lower edge portion of the support wall portion 24 and the lower surface of the lifting prevention portion 33 (contact portion 35) of the connecting bar 31 are substantially in contact with the upper surface of the base plate 45. As described above, by attaching the corner member 3 to the four corners of the pallet 2 via the attachment member 44, the workpiece W can be supported while being separated from the upper surface of the pallet 2.

  Note that the base plate 45 is formed with a mounting hole 49 penetrating in the vertical direction so that the mounting member 44 can be fixed to the pallet 2 with a fixing member such as a bolt or a screw, but the fixing member is not necessarily used. May be. Further, the boss hole 42 is configured to be larger than the outer diameter of the mounting boss 47 so that a slight error can be absorbed.

  Further, the corner member 3 according to the present embodiment includes the outer surface of the support wall portion 24 of the upper corner member 3 and the inner surface of the base frame 13 of the support convex portion 12 of the lower corner member 3 in the stacked state of the corner members 3. However, the upper corner member 3 is not provided with a configuration for restricting the upper corner member 3 from falling off. However, the corner member 3 is provided with locking projections 28 projecting sideways and downward from the lower ends of both ends in the extending direction of the leg portion 21. When the corner members 3 are stacked, FIG. As shown in FIG. 9 and the like, the locking surface 28a of the locking projection 28 of the upper corner member 3 faces the outer peripheral surface of the workpiece W mounted on the mounting portion 11 of the lower corner member 3. Will be. In particular, since the latching protrusions 28 are provided in a pair, when the corner members 3 are stacked, as shown in FIG. The workpiece W placed on the placement portion 11 of the corner member 3 is shaped to enter, and is placed on the lower corner member 3 with respect to the locking surfaces 28a of the pair of locking projections 28. Two sides extending substantially orthogonal to each other on the outer peripheral surface of the workpiece W are configured to be able to contact each other. For this reason, even if the corner member 3 is displaced to the inner peripheral side of the pallet 2, the locking projection 28 comes into contact with the outer peripheral surface of the workpiece W, and further displacement is restricted. Therefore, the corner member 3 can be prevented from falling off only by having a configuration that prevents the upper corner member 3 from being displaced toward the outer periphery.

  Furthermore, the second-stage corner member 3 installed immediately above the lowermost (first-stage) corner member 3 attached to the attachment member 44 has a support protrusion of the lowermost corner member 3 whose outer surface of the support wall portion 24 is the lowermost. The position where the first wing portion 17 of the portion 12 and the inner surface of the base frame 13 of the second wing portion 18 are in contact with each other, and the mounting surface 28a of the pair of locking projections 28 are both the mounting portion of the lowermost corner member 3 11 is displaceable in the horizontal direction between the position contacting the outer peripheral surface of the lowermost (first stage) work W placed on 11. Therefore, even if a gap is formed between the inner surface of the support base 14 of the support convex portion 12 of the lowermost corner member 3 and the outer peripheral surface of the lowermost work W, the outer periphery of the lowermost work W It is possible to eliminate the gap (the room for displacement of the workpiece W in the horizontal direction is eliminated) by bringing the surface and the engagement surfaces 28a of the pair of engagement protrusions 28 of the second-stage corner member 3 into contact with each other.

  Further, in the second-stage corner member 3, the pair of locking projections 28 are brought into contact with the outer peripheral surface of the workpiece W, so that the inner surface of the support base 14 of the third-stage or higher corner member 3 The gap between the outer peripheral surface of the workpiece W placed on the placement portion 11 of the corner member 3 is eliminated, and the workpiece W can be held without wobbling in the horizontal direction. Furthermore, after stacking the workpiece W by the desired number of stages while interposing the corner member 3, the corner member 3 is installed so as to cover the upper four corners of the uppermost workpiece W. This prevents the uppermost workpiece W from being lifted.

  In addition, as shown in FIG. 1 and the like, a concave band-hanging portion 29 is formed on the upper surface of the base frame 13 of the support convex portion 12. One banding portion 29 is formed at each intermediate position between the first wing portion 17 and the second wing portion 18. In the state where the workpieces W are stacked, the fixed band 5 is hooked on the band hanging portion 29 of the uppermost corner member 3, and the stacked corner members 3 are bundled together with the pallet 2.

  As described above in detail, according to the present embodiment, the corner member 3 contacts the upper surface of the workpiece W placed on the placement portion 11 of the lower corner member 3 in the stacked state of the corner members 3. A possible lifting prevention portion 33 is provided. For this reason, it is possible to prevent the workpiece W from being lifted, and it is possible to avoid a situation in which the workpiece W or the like is damaged due to the workpiece W rattling up and down during transportation of the workpiece W or the like. Further, the lifting prevention portion 33 is provided at an intermediate position in the extending direction of the connecting bar 31, and the contact avoiding portion 32 that constitutes both ends in the extending direction of the connecting bar 31 is more than the lower end portion of the lifting preventing portion 33. Located above. That is, while avoiding a situation in which the workpiece W is damaged by the pressure contact of the both ends of the coupling bar 31 that are coupled to the locking projection 28 and the like and are relatively difficult to deform, By making the lifting prevention portion 33 formed at an intermediate position that is easily deformed (easily elastically deformable following the contact with the workpiece W), a relatively large force that causes damage to the workpiece W acts. It is possible to prevent the workpiece W from being lifted up while suppressing this. Therefore, the workpiece W can be transported more safely.

  In the present embodiment, an opening 38 is formed in the connecting wall portion 37 that connects the curved portion 11 a of the mounting portion 11 and the connecting bar 31 so as to be adjacent to the lifting prevention portion 33. . That is, by removing a portion of the connecting wall portion 37 adjacent to the lifting prevention portion 33, the lifting prevention portion 33 is more likely to be elastically deformed following. Therefore, the buffer effect by the elasticity of the lifting prevention part 33 can be further increased, and the load on the workpiece W can be further reduced. Further, since the lifting prevention portion 33 and the connecting wall portion 37 are not directly connected, the stress when supporting the workpiece W placed on the placement portion 11 is prevented from acting on the lifting prevention portion 33 as much as possible. can do. Therefore, the effect of preventing the workpiece W from being damaged is further exhibited. Further, it is possible to reduce the weight, save resources, and the like by the amount of the opening 38 formed.

  Further, the lifting prevention portion 33 is configured by bending the intermediate position in the extending direction of the connecting bar 31 so as to protrude downward. For this reason, for example, compared with the case where the floating prevention part 33 is comprised by forming a thick part in the connection bar | burr 31, the floating prevention part 33 can be made to follow and be elastically deformed more easily.

  In addition, by forming the accommodating concave portion 19 in the bent portion 16 of the support convex portion 12, it is possible to avoid a situation in which the corner portion of the workpiece W collides with the support convex portion 12 and is damaged. Further, in the support wall portion 24 of the leg portion 21, a cutout portion 27 is formed in a lower portion of a portion that can be positioned above the receiving recess portion 19 of the lower corner member 3 in the stacked state of the corner members 3. Has been. For this reason, among the stacked corner members 3, the upper corner member 3 is slightly deformed such that the upper corner member 3 tilts inward (inner peripheral side of the workpiece W) or the leg portion 21 tilts inward. Even in the case where the lower wall portion 24 is formed in the lower portion of the support wall portion 24, the lower edge portion of the support wall portion 24 is accommodated in the accommodation recess 19 of the lower corner member 3. It is possible to avoid a situation in which the top surface of the corner portion is pressed. Therefore, the effect of suppressing damage to the workpiece W and the like can be achieved more reliably. Further, the leg wall portion 22, the lower wall portion 23, and the support wall portion 24 are not formed with a notch 27 in the leg portion 21. For this reason, the strength of the leg part 21 and by extension the corner member 3 can be ensured.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) In the above embodiment, the lifting prevention portion 33 is configured by bending the intermediate portion in the longitudinal direction of the connecting bar 31 so as to protrude downward. For example, as shown in FIG. It is good also as providing the raising prevention part 33 by forming the protrusion which protrudes below from the lower surface of the connecting bar 31 extended horizontally (forms a thick part). Further, as shown in FIG. 14, a plurality of lifting prevention portions 33 may be provided at a predetermined distance in the extending direction of the connecting bar 31. The lifting prevention portion 33 may be provided anywhere in the intermediate position except for both ends of the connecting bar 31 in the extending direction. However, by providing the lifting prevention portion 33 at the center portion, the lifting prevention portion 33 is in contact with the workpiece W. A buffering effect is further exhibited.

  Moreover, in the said embodiment, the corner member 3 is the position where the outer surface of the support wall part 24 contact | connects the inner surface of the base frame 13 of the lower corner member 3, and the latching convex part 28 of the lower corner member 3. Although it is configured such that it can be displaced in the horizontal direction with respect to the position that contacts the outer peripheral surface of the workpiece W placed on the placement unit 11, it may be configured so that it cannot be displaced in the horizontal direction. That is, the latching convex portion 28 is omitted, and the support wall portion 24 is configured to have a substantially L-shaped cylindrical shape that fits the upper portion of the lower base frame 13 in the stacked state of the corner members 3. May be.

  Furthermore, as shown in FIG. 14, it is possible to omit the opening 38 of the connecting wall portion 37 in the above embodiment or to separate the formation position of the opening 38 from the connecting bar 31, From the viewpoint of imparting predetermined elasticity to the connecting bar 31, it is desirable to provide the opening 38 at the position of the above embodiment. Further, the connecting wall portion 37 itself can be omitted, but it is desirable to provide it in consideration of maintaining the shape by securing the strength of the corner member 3. In addition, the band hanging portion 29 can be omitted. However, in the case where the fixed band 5 is used, in order to hold the fixed band 5 at a suitable position (a position where the strength is high or a position with a good balance). It is desirable to provide it.

  (B) The workpiece W may be a substantially plate-shaped workpiece that can be lifted from the pallet 2 by supporting the corner portion by the corner member 3 and can be positioned in the horizontal direction. Furthermore, an accessory may be provided for the substantially plate-shaped main body of the workpiece W. For example, when a solar panel is transported as a workpiece and placed on the corner member 3 with the back side of the panel body provided with wiring or the like facing upward, wiring or the like is placed between the upper and lower panel bodies. You may comprise so that the space which can be accommodated can fully be ensured.

  (C) In the above embodiment, the configuration for attaching the corner member 3 to the pallet 2 is not particularly limited, and the placement portion 11 extends in the horizontal direction, and relative displacement of the pallet 2 in the outer peripheral direction is prevented. It is only necessary that the corner member 3 can be attached. For example, the mounting member 44 may be omitted, and recesses capable of accommodating the locking protrusions 28 may be formed in the vicinity of the four corners of the upper surface of the pallet 2, and the corner member 3 may be directly attached to the pallet 2.

  (D) In the above embodiment, the fixed band 5 is used to prevent the corner member 3 from being displaced, but instead of or in addition to the fixed band 5, a shrink film or the like may be used. It is also possible to omit the binding members such as the fixing band 5. However, when the fixing band 5 is omitted, the lifting of the corner member 3 other than the uppermost stage is prevented by the weight of the workpiece W or the like placed on the placing portion 11 of the corner member 3, but the uppermost stage Concerning the corner member 3, there is a concern that it will rise up relatively easily. For this reason, it is desirable to provide a configuration that can prevent at least the uppermost corner member 3 from being lifted.

  Furthermore, in the said embodiment, although it is actualized when the workpiece | work W is piled up in multiple steps, it can be used also when conveying the workpiece | work W etc. (the corner member 3 in this case becomes 2 steps | paragraphs). In addition, for example, the workpieces W can be stacked up and down in two rows on one pallet 2.

  (E) In the above embodiment, the corner member 3 is made of polypropylene, but may be made of other materials. For example, you may comprise with other resin materials, such as polyethylene, PET, and polyamide.

  DESCRIPTION OF SYMBOLS 1 ... Work conveyance unit, 2 ... Pallet, 3 ... Corner member, 11 ... Mounting part, 12 ... Supporting convex part, 13 ... Base frame, 14 ... Supporting stand, 19 ... Housing recessed part, 21 ... Leg part, 24 ... Support Wall part 27 ... Notch part 28 ... Locking convex part 31 ... Connection bar | burr 32 ... Contact avoidance part 33 ... Lifting prevention part 34 ... Inclination part 35 ... Contact part 37 ... Connection wall part, 38 ... Opening, 44 ... Mounting member, W ... Workpiece.

Claims (4)

It is a support member that can be supported in a state where the work is separated from the installation surface by being installed corresponding to each corner part of the work having a substantially plate shape,
A placement unit capable of supporting the lower surface of one corner of the workpiece;
Projecting upward from the mounting portion to form a substantially L shape in plan view, and a supporting convex portion facing the outer peripheral surface of the workpiece placed on the mounting portion;
In the stacked state of the support members in which the support members are stacked vertically in the same direction, projecting downward from the mounting portion along the support convex portion to form a substantially L shape in the bottom view, A leg portion supported in contact with an upper surface of the support convex portion;
The workpiece that extends so as to connect between the one end side and the other end side of the leg portion, and is placed on the placement portion of the lower support member in the stacked state of the support members A connecting bar facing the upper surface of the
The connecting bar includes an anti-lifting portion that comes into contact with the upper surface of the work and at both ends in the extending direction of the connecting bar when the work and the support member are relatively inclined at an intermediate position in the extending direction of the connecting bar. And a contact avoiding portion whose lower surface is located above a lower end portion of the lifting prevention portion. Comprising a connecting wall portion for connecting the mounting portion and the connecting bar,
The workpiece support member according to claim 1, wherein an opening is formed in the connection wall portion so as to be adjacent to the lifting prevention portion.   3. The workpiece support member according to claim 1, wherein the lifting prevention portion is formed by bending so that an intermediate position in the extending direction of the connecting bar protrudes downward. 4. . In the bent portion of the support convex portion having a substantially L shape in plan view, an inner surface that can be in contact with the outer peripheral surface of the workpiece is recessed outward, so that the outer peripheral surface of the workpiece is the inner surface of the support convex portion. Is formed, an accommodation recess that can accommodate the corner portion of the workpiece is formed,
The notch part is formed in the lower part of the site | part which can be located above the said accommodation recessed part in the stacked state of a supporting member among the said leg parts, The Claim 1 thru | or 3 characterized by the above-mentioned. The workpiece support member described.

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