JP4666260B2 - Carriage for transportation - Google Patents

Description

  The present invention includes a load support base, left and right side panels and a back panel arranged along three sides of the load support base, and the support panel portion of the side panel and the support panel portion of the back panel are connected by a connecting member. The present invention relates to a transport table.

A load support base, and left and right side panels and a back panel arranged along three sides of the load support base. Each panel has a gate-shaped perimeter frame made of a round pipe material. For example, Patent Document 1 discloses a transport carriage in which a rear column portion of a portal-shaped peripheral frame and left and right column columns of a portal-shaped peripheral frame of a back panel are respectively connected by a connection member. As shown in FIGS. 17 to 19 of the patent document 1, the connecting member in this type of conventional transport carriage as described in the patent document 1 is a pair of left and right clamping plates (actually , A structure connected to each other via a hinge portion at the end on the back panel side) and a bolt and nut for fastening the both clamping plates to each other. Each clamping plate has a prismatic portion formed on a column portion of the back panel. On the other hand, a rectangular fitting portion that is externally fitted so as to be relatively non-rotatable and a semicircular fitting portion that is fitted so as to be relatively rotatable with respect to the rear column portions on the left and right side panels are formed.
JP 2000-71993 A

  In the conventional connection member configuration as described above, when a large inward and outward twisting force is applied to the left and right side panels due to abnormal loading on the transport carriage, abnormal handling of workers, and other sudden accidents, etc. Or, when an abnormal external force such as pulling forward from the back panel is applied, the semicircular fitting part of the pair of left and right clamping plates holding the rear column part of the left and right side panels is deformed to open, Abnormal rattling occurs on the left and right side panels, and depending on the degree, it may become unusable. In order to eliminate such problems, it is necessary to make the metal plate as thick as possible, but this will not only increase the cost, but the pair of left and right clamping plates should be connected to the end of the back panel. When the structure is connected to each other via the hinge portion, a large operating force is required for bending at the hinge portion, and the mounting operation becomes difficult.

An object of the present invention is to provide a transport carriage capable of solving the above-described conventional problems. When the means is shown with reference numerals of embodiments to be described later, a load support is provided. The base 4 is provided with left and right side panels 2 and 3 and a back panel 1 arranged along three sides of the load support base 4, and the pillars 9 a and 10 a of the side panels 2 and 3 and the pillars of the back panel 1. parts 8a, and the 8b are connected by a connecting member 15, before Symbol connecting members 15 and 16 includes a pair of holding plates 19 and 20 consist of bolts and nuts 21 for fastening the two clamping plates 19 and 20 to each other The sandwiching plates 19 and 20 are provided with square fitting portions 22 and 23 that are fitted on the prisms 17 and 18 formed on the column portions 8a and 8b of the back panel 1 so as not to rotate relative to each other, and the side panel 2. , 3 semi-circular fitting portions 24 and 25 that are externally fitted to the support portions 9a and 10a are formed. The free end of the semicircular fitting portion 24, 25 side of the clamping plates 19 and 20, the transport carriage of the engaging portion 33 is provided to prevent opening of both clamping plates 19 and 20 engage with each other The free end portion of one holding plate 19 is formed with a bent free end portion 33b bent outward so as to overlap the free end portion of the other holding plate 20, and the engaging portion 33 is connected to the other holding plate A check claw 33a formed at the free end portion of the plate 20, and a locking hole 33c provided at the bent free end portion 33b of one holding plate 19 and engaged with the check claw 33a, The check claw 33a has a belt-like portion between the straight notch 33d provided in the vertical width direction along the front end edge of the sandwiching plate 20 and the front end edge, and the end face on the straight notch 33d side faces outward. It is configured to protrude obliquely outward so as to protrude .

  In carrying out the present invention with the above configuration, specifically, as described in claim 2, the bolt nut 21 is provided between the prism 18 on the back panel 1 side and the column 10 a of the side panel 3. It can be arranged only at a position adjacent to the prism 18 instead of the central position.

Further, as described in claim 3 , the sandwiching plates 19 and 20 are formed of a single metal plate so as to be connected to each other in a square shape in plan view at the rear end portions on the square fitting portions 22 and 23 side. In addition, a hinge portion 32 is formed between the rear end portions of the sandwiching plates 19 and 20 that are connected to each other to assist the closing movement of the sandwiching plates 19 and 20, and the hinge portion 32 includes a vertical slit 32a, The slits 32a can be configured with concave grooves 32b formed on the inner surface of the metal plate on both upper and lower sides.

Further, as described in claim 4 , the sandwiching plates 19, 20 are reinforced to bulge outwardly in two upper and lower stages connecting the square fitting parts 22, 23 and the semicircular fitting parts 24, 25. Ribs 26a to 27b are formed, and through holes 28 and 29 into which the bolt 21A of the bolt nut 21 is inserted are provided between the upper and lower reinforcing ribs 26a to 27b, and the bolt 21A of the bolt nut 21 is provided. The head 30 and the nut 21 </ b> B can have a thickness that does not protrude outward from the height of the reinforcing ribs 26 a to 27 b in two upper and lower stages. In this case, as described in claim 5 , the head portion 30 and the nut 21B of the bolt 21A of the bolt nut 21 are fitted in the through holes 28 and 29 through which the bolt 21A is inserted. The portions 30b and 31b are provided, and the inner projecting portion 31b of the nut 21B and the through-hole 29 into which the nut is fitted can be configured to have a rectangular shape that disables relative rotation between the two.

Further, as described in claim 6 , both the clamping plates 19, 20 are bent inwardly at an intermediate position between the column portion 10 a of the side panel 3 and the bolt nut 21 and are clamped by the bolt nut 21. The bent portions 26c and 27c that come into contact with each other when the plates 19 and 20 are fastened are integrally formed. The bent portions 26c and 27c are adjacent to the column portion 10a of the side panel 3, and the semicircular fitting portions 24 and Side surfaces 26d and 27d constituting a part of 25 can be provided.

According to the configuration of the connecting member of the transport carriage according to the present invention having the above-described configuration, the semicircular fitting of the pair of left and right holding plates holding the rear column portions of the left and right side panels due to the reasons described above. Even if the force acts to open the joint, the free ends on the side of the semicircular fitting portions of the both clamping plates are engaged with each other by the engaging portions that prevent the free ends of the both clamping plates from opening. Since it is in a locked state, it is deformed so that the semicircular fitting portions of the pair of left and right sandwiching plates are opened unless an abnormally large force is applied that would cause the engagement portion to be deformed and disengaged. There is no fear of doing. Accordingly, there is no inconvenience caused by the deformation so that the semicircular fitting portions of the pair of left and right sandwiching plates open, that is, no abnormal rattling occurs on the left and right side panels, and the plates of the pair of sandwiching plates Since the thickness can be reduced, the cost can be reduced, and even when the pair of left and right clamping plates are connected to each other via the hinge portion at the end portion on the back panel side, the bending at the hinge portion is significant. No operating force is required and the installation work can be facilitated. Furthermore, according to the structure of this invention, the said engaging part is comprised with the latching hole provided in the bending free end part of one clamping plate, and the non-return claw formed in the free end part of the other clamping plate. The free ends of both clamping plates are simply pushed in the direction in which the free end portions of the two clamping plates approach each other so that the free end portions of the other clamping plates are inserted inside the bending free end portions of the one clamping plate. The check claws are formed by simply extruding a belt-like portion between one straight vertical cut in the vertical width direction and the front edge of the holding plate. Since there are no cuts in the protruding direction of the check pawl at both ends in the vertical width direction of the stop pawl, the strength of the check pawl is large and there is little risk of breakage. Also, the base (lowest position) of the check pawl is the same as the front end edge of the clamping plate, and the extension of the bent free end of one clamping plate to form a locking hole to be engaged with the check pawl. The projecting length can be shortened.

  In addition, according to the structure of Claim 2, it is centered on the right-and-left both-sides column part of the said back panel to the connection member which fits into the prismatic part of the right-and-left both-sides column part of a back panel, and is fixed so that relative rotation is impossible. When the large rotational force acting in the left-right direction is applied, or when a large pressing force is applied in the rear direction where the left and right column support portions of the back panel are applied, the rectangular fitting portion of the sandwiching plate is opened by the prism portion. Such deformation can be reliably prevented by the bolts and nuts that fasten both the clamping plates.

Further, according to the configuration of claim 3 , since both the sandwiching plates are integrated, the handling becomes easy, and the strength of the rectangular fitting portion that holds the prism portion on the back panel side is greatly improved. In particular, according to the configuration of the present invention, the resistance when performing the operation of closing both sandwiching plates that are open in the letter C shape is the vertical slit formed in the hinge portion and the slit. It is greatly reduced by the concave grooves formed on the inner surface of the metal plate on both the upper and lower sides of the metal plate, so that the mounting operation can be performed easily.

Furthermore, according to the structure of claim 4 , the strength of both clamping plates is increased by the reinforcing ribs that bulge outward in the upper and lower two stages, and the bolt heads of the bolt nuts are formed by the upper and lower two stages of ribs. And the nuts of the bolts can be prevented, and the skin and clothes of the operator can be prevented from being caught by the bolt heads and nuts, and the bolt heads and nuts are in sliding contact with the wall surface when the carriage is moved by the wall. Inconveniences such as scratches can be avoided. Particularly in this case, according to the configuration described in claim 5 , even if the height of the upper and lower two-stage ribs is not increased abnormally, the bolt head and nut are inserted into the through hole through which the bolt is inserted. The required height can be ensured by the inner overhanging part that fits into the bolt, for example, a square hole for rotation operation can be provided in the bolt head, and the required length is secured in the screw hole of the nut to increase the fastening strength. It can be increased. Furthermore, even if the height of the nut protruding outward is low, the inner overhanging portion of the nut and the through-hole into which the nut is fitted are fitted so as not to rotate relative to each other.

In addition, when the interval between the prism portion on the back panel side and the rear column portion of the side panel is large, and when connecting the side panel that should be horizontally swingable around the rear column portion, The configuration described in item 7 can be adopted. That is, according to the structure of Claim 6 , the support surface of the clamping plate with respect to the support | pillar part of the side panel which leaves | separates from the volt | bolt nut which fastens both clamping plates increases, and the support strength with respect to a side panel can be improved. In addition, when both the clamping plates are fastened with bolts and nuts, it is possible to prevent the semicircular fitting portion of both clamping plates from being crimped to the supporting column portion of the side panel, and the horizontal of the side panel centering on the supporting column portion. Oscillation can be made possible.

  A specific embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 to 3, 1 is a back panel, 2 is a left panel, 3 is a right panel, and 4 is a load support. The back panel 1 and the left and right side panels 2 and 3 each have a gate-shaped peripheral frame 8 to 10 made of a round pipe material bent into a gate shape on the lower side members 5 to 7 using an angle material. A plurality of vertical rails 11 and a plurality of horizontal rails 12 are laid in a lattice shape in a rectangular region surrounded by the lower side members 5 to 7 and the gate-shaped peripheral frames 8 to 10. is there.

  In this embodiment, both lower sides of the lower side member 5 of the back panel 1 and lower front sides of the lower side members 6 and 7 of the left and right side panels 2 and 3 are respectively provided with mounting seats 13a to 13d. Wheels 14a to 14d (such as universal wheels and fixed-direction wheels) are attached. The rear end portion of the lower side member 6 of the left panel 2 is fixed to the wheel mounting base 13a so that the left panel 2 is oriented at a right angle with respect to the back panel 1, and the periphery of the portal shape of the left panel 2 The rear column portion 9a of the frame 9 and the left column portion 8a of the portal-shaped peripheral frame 8 of the back panel 1 positioned just behind the frame 9 are coupled by a coupling member 15 at two upper and lower positions. Further, the right side panel 3 has a rear column portion 10a between the gate-shaped peripheral frame 10 of the right side panel 3 between a posture that is perpendicular to the back panel 1 and a folding posture that overlaps the inside of the back panel 1. The rear end portion of the lower side member 7 of the right panel 3 is pivotally supported by the wheel mounting seat 13b and the rear side of the portal peripheral frame 10 of the right panel 3 so that the right side panel 3 can swing horizontally. The support column 10a and the right support column 8b of the gate-shaped peripheral frame 8 of the back panel 1 positioned immediately behind the support column 10a are connected by a connecting member 16 at two locations, upper and lower.

  The load support base 4 is pivotally supported by the lower side member 5 of the back panel 1 so as to swing up and down. Therefore, the load support base 4 is folded so as to stand up along the inner side of the back panel 1, the right panel 3 is horizontally swung inward, and the load support base 4 in an upright position is sandwiched between the back panel 1. By adopting the folding posture, as shown in FIG. 2, the transport carriage can be folded into a plane L shape. As is well known in this type of foldable transport cart, the load support base 4 is turned downward and the left and right sides thereof are placed on the lower side members 6 and 7 on the left and right side panels 2 and 3. Although there is a detachable locking device that locks the left and right sides of the load support base 4 in the horizontally lying posture supported by the lower side members 6 and 7 of the left and right side panels 2 and 3, Here, illustration and description of the locking device are omitted.

  As apparent from FIGS. 2 and 3, the rear column 10 a of the portal frame 10 of the right panel 3 and the right column 8 b of the portal frame 8 of the back panel 1 fold the right panel 3. In this case, since the load support base 4 in an upright position is sandwiched between the right panel 3 and the back panel 1, a relatively wide space is secured in the front-rear direction. The rear column 9a of the frame 9 and the left column 8a of the portal peripheral frame 8 of the back panel 1 are sufficiently close to each other. Accordingly, the connecting member 15 that connects the rear column portion 9a of the portal peripheral frame 9 of the left panel 2 and the left column column 8a of the portal peripheral frame 8 of the back panel 1 has a short length in the front-rear direction. The connecting member 16 that connects the rear support column 10a of the portal frame 10 of the right panel 3 and the right support column 8b of the portal frame 8 of the back panel 1 has a long longitudinal length. Yes.

  The left column 8a and the right column 8b of the portal peripheral frame 8 of the back panel 1 are formed with prisms 17 and 18 at locations where connecting members 15 and 16 are attached as shown in FIGS. 3C and 3D. Has been. These prismatic parts 17 and 18 have four side surfaces 17a to 17d and 18a to 18d parallel to the front-rear direction and the left-right direction of the transport carriage, and the distance between the parallel side surfaces is smaller than the outer diameter of the round pipe material. Specifically, the round pipe material having a square cross section slightly smaller than the inner diameter of the round pipe material is formed by drawing a round pipe material constituting the portal peripheral frame 8 in a fixed length region.

  The detailed structure of the connecting member 16 having a long length in the front-rear direction will be described with reference to FIGS. 4 to 9. The connecting member 16 includes a pair of left and right clamping plates 19 and 20 and a single bolt nut 21. The sandwiching plates 19 and 20 are rotatable relative to the square fitting portions 22 and 23 that are fitted to the prism 18 on the back panel 1 side so as not to rotate relative to the rear column portion 10a of the right panel 3. And semi-circular fitting portions 24 and 25 which are externally fitted to each other. The both sandwiching plates 19 and 20 include front and rear direction plate portions 19a and 20a that contact the left and right side surfaces (see the left and right side surfaces 18c and 18d shown in FIG. 3D) of the prism 18 on the back panel 1 side, and the front and rear direction plate portions. 19a, 20a rear end bent portions 19b, 20b bent inward at right angles, and both upper and lower bent portions bent inward from the upper and lower sides of the front / rear direction plate portions 19a, 20a. It comprises plate portions 19c, 20c and front end arc-shaped plate portions 19d, 20d formed by bending the front end portions of the front-rear direction plate portions 19a, 20a inward in an arc shape, and further includes front-rear direction plate portions 19a, 20a. Includes two upper and lower reinforcing ribs 26a that bulge outwardly in a curved shape by the same height in the region from the front end bent plate portions 19b, 20b to the front end arcuate plate portions 19d, 20d. 26b and upper and lower two-stage reinforcing ribs 27a and 27b are formed. In both the upper and lower two-stage reinforcing ribs 26a and 26b and between the reinforcing ribs 27a and 27b, the upper and lower bent plate portions 19c and 20c are positioned adjacent to the front arcuate plate portions 19d and 20d. Projected portions 26c and 27c that bulge inward by substantially the same height as the width are integrally formed.

  The rectangular fitting portions 22 and 23 are formed at the rear end portions 19a and 20e at right angles to the rear end portions and rear end bent plate portions 19b and 20b and the upper and lower bent plate portions 19c and 20c. The semi-circular fitting portions 24, 25 are formed of front end arc-shaped plate portions 19d, 20d, upper and lower bent plate portions 19c, 20c, and arc-shaped front sides 19f, 20f, and a bent portion 26c. 27c, arc-shaped side surfaces 26d, 27d on the front end arc-shaped plate portions 19d, 20d side. The front end arcuate plate portions 19d and 20d protrude from the front and rear direction plate portions 19a and 20a by the bulging height of the reinforcing ribs 26a to 27b. Therefore, the tops of the reinforcing ribs 26a to 27b are projected. The surface is connected flush with the projecting outer surface of the front end arcuate plate portions 19d, 20d.

  Further, the front-rear direction plate portions 19a and 20a are provided at intermediate positions between the bent portions 26c and 27c and the rear end bent plate portions 19b and 20b between the reinforcing ribs 26a and 26b and between the reinforcing ribs 26a and 26b. The bolt 21A of the bolt nut 21 is provided with a circular through hole 28 and a square through hole 29 through which the bolt 21A is inserted close to the front side surface of the prism 18 on the back panel 1 side (see the front side surface 18a shown in FIG. 3D). The head 30 of the bolt 21A has a circular inner projecting portion 30b that fits into the circular through hole 28 inside the head body 30a having a thickness substantially the same as the bulging height of the reinforcing ribs 26a to 27b. Are formed integrally, and square holes 30c for rotational operation are provided concentrically using the entire thickness of the head 30 including the circular inner overhanging portion 30b and the head main body 30a. . The nut 21 </ b> B of the bolt nut 21 is a rectangular inward projecting that is non-rotatably fitted into the rectangular through hole 29 inside a nut body 31 a having a thickness substantially the same as the bulging height of the reinforcing ribs 26 a to 27 b. The part 31b is integrally formed, and a screw hole 31c is provided that penetrates the entire nut 21B including the rectangular inner overhanging part 31b and the nut body 31a.

  Both sandwiching plates 19 and 20 are formed of a single metal plate in a C-shape in which end portions of rear end bent plate portions 19b and 20b are integrally connected via a hinge portion 32. The hinge portion 32 includes a slit 32a formed along the boundary between the rear end bent plate portions 19b and 20b, and the rear end bent plate portions 19b and 20b on the inner surfaces of the upper and lower metal plates of the slit 32a. It is comprised from the ditch | groove 32b formed along the boundary.

  Engaging portions 33 that engage with each other are provided at the free end portions of the sandwiching plates 19 and 20 on the semicircular fitting portions 24 and 25 side, that is, the free end portions of the front end arcuate plate portions 19d and 20d. ing. The engaging portion 33 overlaps the check claw 33a formed at the free end portion of the front end arc-shaped plate portion 20d of the one sandwiching plate 20 and the free end portion of the front end arc-shaped plate portion 20d. The bent free end portion 33b formed by bending the free end portion of the front end arcuate plate portion 19d of the other holding plate 19 outwardly and the check pawl 33a provided on the bent free end portion 33b are engaged. The engaging hole 33c is joined. The check pawl 33a has a strip-shaped portion between a free end edge of the front arcuate plate portion 20d and a straight notch 33d provided in the vertical width direction along the free end edge. The end surface on the 33d side is formed by being extruded obliquely so as to protrude outward.

  Since the connecting member 16 having the above-described configuration is in a state in which the two clamping plates 19 and 20 connected to each other via the hinge portion 32 are opened in a square shape before use, as shown in FIG. For example, the clamping plate 20 is fitted inside the square fitting portion 23 with the left half of the prism portion 18 in the right column portion 8b on the back panel 1 side, and the semicircular fitting portion 25 of the right panel 3 is fitted. The left half of the rear support column 10a is fitted, and in this state, the clamping plates 19 and 20 are pressed and closed so as to be close to each other so that the clamping plate 19 is superimposed on the clamping plate 20. At this time, since the cross-sectional area of the rear end boundary portion of the sandwiching plates 19 and 20 connected to each other is extremely reduced by the slit 32a of the hinge portion 32 and the upper and lower concave grooves 32b, the sandwiching plates 19 and 20 themselves are deformed. It does not occur, and the two clamping plates 19 and 20 are closed by being reliably bent at the hinge portion 32.

  At the final stage of the closing movement of both the clamping plates 19 and 20, the check pawl 32a on the clamping plate 20 side of the engaging portion 33 is press-fitted inside the bending free end portion 33b on the clamping plate 19 side, thereby causing the bending play. With the elastic deformation of the end portion 33b, the check pawl 32a fits into the locking hole 33c of the bent free end portion 33b, and the rising end surface of the check pawl 32a is engaged as shown in FIGS. 4C and 5. The both clamping plates 19 and 20 are engaged unless they are engaged with the outer side of the stop hole 33c, the free end portions of the both clamping plates 19 and 20 are coupled to each other, and the bending free end portion 33b is forced to be deformed to open outward. Can not be opened. As a result, as shown in FIG. 4B, the rectangular column 18 in the right column portion 8b on the back panel 1 side is sandwiched by the square fitting portions 22 and 23 of the sandwiching plates 19 and 20 so as not to rotate relative to the right panel. 3 rear struts 10a are clamped by the semicircular fitting parts 24, 25 of the clamping plates 19, 20.

  Next, the nut 21B of the bolt nut 21 is fitted into the rectangular through hole 29 of the sandwiching plate 20 with the rectangular inner overhanging portion 31b, and the nut body 31a is disposed between the upper and lower two-stage reinforcing ribs 27a, 27b. The bolt 21A is inserted through the circular through hole 28 and screwed into the through screw hole 31c of the nut 21B, and the both clamping plates 19 and 20 are fastened together. At this time, as shown in FIG. 4C, the circular inner projecting portion 30b of the bolt head 30 is fitted into the circular through hole 28, and the bolt head 30 is provided with two upper and lower reinforcing ribs 26a, 26b. The bolt 21A is adjacent to and parallel to the front side surface (see the front side surface 18a shown in FIG. 3D) of the prism 18 in the right column 8b on the back panel 1 side.

  The both clamping plates 19 and 20 are fastened to each other by the bolt nut 1 as described above, so that both the clamping plates 19 are provided to the prism portion 18 in the right column portion 8b on the back panel 1 side adjacent to the bolt nut 21. The front and rear direction plate portions 19a and 20a forming the rectangular fitting portions 22 and 23 are pressed against the left and right side surfaces of the prism portion 18 so that the sandwich plates 19 and 20 are firmly fixed to the prism portion 18. However, as described above, the right panel 3 connected to the back panel 1 by the connecting member 16 must be able to swing left and right around the rear column 10a. , C shows that the semicircular fitting portions 24, 25 of the both clamping plates 19, 20 are in close contact with the rear column 10a, but in actuality, both the clamping plates 19, 20 by the bolt nut 21 are used. 4C and As shown in FIG. 6B, the bent portions 26c and 27c of the both clamping plates 19 and 20 are pressed against each other, and the semicircular fitting portions 24 and 25 of the both clamping plates 19 and 20 are pressed to the rear support column 10a. The rear strut portion 10a gripped in the semicircular fitting portions 24, 25 is configured to be able to rotate with respect to the connecting member 16. Of course, depending on the case, a synthetic resin tubular body (can be opened / closed in half) between the rear column 10a and the semicircular fitting portions 24, 25 for smooth rotation of the rear column 10a. It is also possible to interpose a simple structure or a two-part structure).

  The connecting member 15 that connects the back panel 1 and the left panel 2 is basically the same as the connecting member 16 as shown in FIG. The prism 17 of the left column 8a of the approaching back panel 1 and the rear column 9a of the left panel 2 are connected to each other, and the left panel 2 is fixed to the back panel 1 in a direction perpendicular to the front. Therefore, the bent portions 26c and 27c as formed in the both sandwiching plates 19 and 20 of the connecting member 16 are not provided. The bolt 21A of the bolt nut 21 is in a state adjacent to both the prism 17 on the back panel 1 side and the rear column 9a of the left panel 2. Naturally, both the clamping plates 19 and 20 are folded up and down. The curved plate portions 19c and 20c have extremely short lengths in the front-rear direction.

It is a perspective view showing the whole conveyance cart which can be folded up. It is a top view which shows the state which folded the conveyance trolley in the plane L shape. 1A is a left side view of the transfer carriage shown in FIG. 1, FIG. 2B is a right side view of the transfer carriage, and FIG. 2C is a front view of the main part for explaining a prism portion formed in a portal frame around the back panel. , D is a cross-sectional view taken along line AA of FIG. Fig. A is a side view showing a connecting portion between the back panel and the right side panel, Fig. B is a plan view of Fig. A, and Fig. C is a sectional view taken along line BB of Fig. A. FIG. 4B is a front view of FIG. 4A. 4A is a cross-sectional view taken along line CC in FIG. 4A, and FIG. B is a cross-sectional view taken along line DD in FIG. 4A. It is a top view before use of the connecting member shown in FIG. FIG. 8 is a transverse plan view of the connecting member shown in FIG. 7. 7A is a view taken along arrow E in FIG. 7, B is a view taken along arrow F in FIG. 7, C is a view taken along arrow G in FIG. 7, D is a sectional view taken along line JJ in FIG. FIG. 7 is an H arrow view, and FIG. F is an I arrow view of FIG. Fig. A is a side view showing a connecting portion between the back panel and the left side panel, Fig. B is a plan view of Fig. A, and Fig. C is a sectional view taken along line KK of Fig. A.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Back panel 2 Left side panel 3 Right side panel 4 Load support stand 8-10 Gate-shaped surrounding frame 8a, 8b of each panel Right and left both-sides support | pillar part 9a, 10a Back side support | pillar part 15 Left and right both-side panel Back panel and left side panel Connecting member 16 connecting members 17 and 18 between the back panel and the right panel Square column portions 19 and 20 provided on the column portion of the back panel Nipping plates 19a and 20a Front and rear direction plate portions 19b and 20b Rear end bent plate portion 19c 20c Upper and lower bent plate portions 19d, 20d Front end arcuate plate portions 19e, 20e Right-angled rear sides 19f, 20f of the upper and lower bent plate portions Arc-shaped front sides 21 of the upper and lower bent plate portions 21 Bolt nut 21A Bolt 21B Nut 22, 23 Square fitting portion 24, 25 Semi-circular fitting portion 26a-27b Reinforcing ribs 26c, 27c Bending portions 26d, 27d Arc-shaped side surfaces 28 of the protruding portion Circular through hole 2 Square through hole 30b Bolt head circular inner overhang 30c Bolt head rotation operation square hole 31b Nut square inner overhang 31c Nut through screw hole 32 Hinge 32a Hinge slit 32b Hinge groove 33 Engagement part 33a Check claw 33b Bending free end part 33c Locking hole

Claims (6)

Load support stand, the load along the support base of the three sides and a disposed a left and right side panels and the back panel, and a strut support portion and the back panel of the side panel is connected by a connecting member, before The connecting member comprises a pair of left and right clamping plates and bolts and nuts that fasten both clamping plates to each other, and each clamping plate is externally fitted so as not to rotate relative to the prism portion formed on the column portion of the back panel. And a semi-circular fitting portion that is externally fitted to the support portion of the side panel, and the free end portions of the both clamping plates on the side of the semi-circular fitting portion are engaged with each other to form both clamping plates. In the transport carriage provided with the engaging portion that prevents the opening of
The free end portion of one clamping plate is formed with a bent free end portion bent outward so as to overlap the free end portion of the other clamping plate, and the engaging portion is a free end portion of the other clamping plate. And a locking hole provided in the bent free end portion of one of the holding plates and engaged with the check claw, wherein the check claw is a front end edge of the holding plate. A belt-like portion between the linear notch provided in the vertical width direction and the front edge is projected obliquely outward so that the end face on the linear notch side projects outward. , Carriage for transportation.   2. The transport carriage according to claim 1, wherein the bolts and nuts are arranged not at a central position between the prism portion on the back panel side and a column portion of the side panel but only at a position adjacent to the prism portion. . Both sandwiching plates are formed of a single metal plate so as to be connected to each other in a square shape in a plan view at the rear end portion on the side of the square fitting portion, and both sandwiching plates are sandwiched between the rear end portions that are connected to each other. The hinge part which assists the closing movement of a board is formed, This hinge part is comprised by the slit of an up-down direction, and the ditch | groove formed in the inner surface of a metal plate in the up-and-down both sides of this slit. Or the cart for conveyance as described in 2. Both sandwiching plates are formed with reinforcing ribs that bulge outwardly in two upper and lower stages that connect the square fitting part and the semicircular fitting part, and the bolt nut between the upper and lower two stages of reinforcing ribs. A through-hole through which the bolt of the bolt is inserted is provided, and the bolt head and the nut of the bolt nut have a thickness that does not protrude outward from the height of the reinforcing ribs in the two upper and lower stages. The carriage for transportation according to any one of the above. The bolt head of the bolt nut and the nut are provided with an inner overhang portion that fits into the through hole through which the bolt is inserted, and the inner overhang portion of the nut and the through hole into which the nut is fitted The carriage for transportation according to claim 4 , which is configured in a rectangular shape that disables relative rotation between the two . The both sandwiching plates are integrally formed with a projecting portion that is bent inwardly at an intermediate position between the support portion of the side panel and the bolt and nut and that abuts with each other when the sandwiching plate is fastened by the bolt and nut. The conveying cart according to any one of claims 1 to 5, wherein the curved portion includes a side surface that constitutes a part of the semicircular fitting portion adjacent to a column portion of the side panel .

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