JP2019196119A - Block of carriage - Google Patents

Abstract

To carry stably a block of a carriage.SOLUTION: In a block 11 of a carriage 10, a handle hole 15 is formed on a block body 11H having a caster 90 fixed on its lower surface. A folding wall 20 is folded to the inside from a lower end part of a hanging rib 16 enclosing the handle hole 15, and a protective member 30 fitted into the handle hole 15 is fixed in the overlapped state on the folding wall 20. Further, a curved surface 33R is formed on the protective member 30, to thereby prevent a corner part of the handle hole 15 from abutting on a hand.SELECTED DRAWING: Figure 3

Description

  The present disclosure relates to a carriage base having a handle hole penetrating vertically.

  As a base of this type of conventional carriage, a base having a rib protruding downward from an opening edge of a handle hole is known (for example, see Patent Document 1).

Japanese Patent No. 2844395 (FIGS. 5 and 6)

  In the base of the conventional cart described above, the corner of the opening edge (specifically, the corner of the tip of the rib) bites into the hand that has passed through the handle hole, so that the cart of the cart cannot be stably carried. There is a problem, and there is a demand for the development of a bogie base to solve the problem.

  The invention of claim 1 made to solve the above-mentioned problems is a platform of a carriage having a handle hole penetrating vertically, and a platform body in which a caster is fixed to a lower surface, and the platform body And a protection member having a curved surface that can be fixed and can come into contact with a hand passing through the handle hole.

  The invention of claim 2 is the carriage base according to claim 1, further comprising a cavity portion formed in at least one of the base body or the protective member and closed by the other.

  According to a third aspect of the present invention, there is provided an engagement mechanism that is provided on the base body and the protection member, engages with each other through at least one elastic deformation inside the hollow portion, and fixes the protection member. Item 3. A carriage base of Item 2.

  According to a fourth aspect of the present invention, the platform body includes a top plate on which a load is placed, a hanging rib that is suspended from the top plate and has the handle hole inside, and a lower end portion of the hanging rib 4. The carriage according to claim 2, further comprising a folded wall that is folded inward and upward from the hanging rib and has the hollow portion between the hanging ribs, and the protection member is overlaid on an upper surface of the folded wall. It is the base plate.

  According to a fifth aspect of the present invention, there are provided a plurality of communication ribs that communicate between the hanging rib and the folded wall, and a plurality of engagement holes that penetrate at least some of the plurality of communication ribs among the plurality of communication ribs. And a plurality of elastic engagement pieces that are suspended from the protective member and engage with the plurality of engagement holes through elastic deformation, and the plurality of communication ribs having the engagement holes in the folded wall from above. It is the base of the trolley | bogie of Claim 4 which has several through-holes formed in the position which opposes.

  The invention according to claim 6 is the carriage base according to claim 5, wherein the carriage has a plurality of positioning protrusions that are suspended from the protective member and overlap the plurality of connecting ribs in a horizontal direction without undergoing elastic deformation.

  The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the protection member is formed of a member having higher elasticity than the base body and protrudes from an upper surface or a lower surface of the base body. It is a base of the described cart.

  According to the base of the carriage of claim 1, the protective member having a curved surface is fixed to the base body, so that the corner of the opening edge of the handle hole is prevented from biting into the hand. Stable carrying becomes possible.

  In the base of the carriage according to claim 2, the periphery of the handle hole can be formed into a thick and light hollow wall by the hollow portion closed by the base body and the protection member, and the wall of the handle hole 15 is passed through. The stress concentration on the hand can be suppressed.

  In the base of the carriage according to claim 3, the protective member is easily fixed to the base body by the engagement mechanism, and the engagement mechanism is disposed in the hollow portion, so that it is not easily detached, and the fixation is stable. To do.

  If the hollow part is formed between the hanging rib and the folded wall folded inward from the lower end portion thereof as in the carriage base of claim 4, the protective member is overlapped on the upper surface of the folded wall to form the hollow part. Can be easily plugged.

  According to the configuration of the fifth aspect, the plurality of connecting ribs are inserted and reinforced between the hanging rib and the folded wall, and the connecting rib engages with the plurality of elastic engaging pieces hanging from the protective member. Thus, the protective member is also used as an engaging counterpart. Moreover, it can prevent that water accumulates in a cavity part by the some through-hole formed in the folding | turning wall.

  According to the configuration of the sixth aspect, the plurality of positioning protrusions suspended from the protection member overlap the plurality of communication ribs, and the plurality of communication ribs can be used also for positioning of the protection member.

  According to the configuration of the seventh aspect, since the protection member is made of a member having higher elasticity than the base body and protrudes from the upper surface or the lower surface of the base body, the protection member is prevented from slipping or stacked on the luggage body. It can also be used as an anti-slip material between the two platforms.

The perspective view of the trolley | bogie which concerns on embodiment of invention. Perspective view of the bottom side of the base Side cross-sectional view of the base Perspective view of handle hole on base Perspective view of the upper surface side of the protective member Perspective view of the lower surface side of the protective member Perspective view of partly broken base Perspective view of partly broken base Perspective view of the handle hole of the base plate Side sectional view of handle hole according to modification

  Hereinafter, the base 11 of the carriage 10 of this embodiment shown in FIGS. 1 to 9 will be described. As shown in FIG. 1, the base plate 11 of the carriage 10 of this embodiment is formed by assembling a plurality of parts such as a protection member 30 and a non-slip member 12B to the base body 11H. The base body 11H is, for example, a resin injection-molded product, and includes a lattice-shaped lower surface rib 14 shown in FIG. 2 on the lower surface of the top plate 12 having a rectangular planar shape. Further, the side wall 13 shown in FIG. 1 is suspended from the outer edge of the lower surface of the top plate 12 to surround the lower surface rib 14.

  Casters 90 are attached to the four corners of the lower surface of the top plate 12. In addition, a pair of support holes 12C are formed at one end of the top plate 12 in the longitudinal direction, and a gate-shaped hand pressing member 91 is fitted to them. The hand pressing member 91 includes a hinge portion 91 </ b> H at a lower end portion and can be folded on the base plate 11. Further, circular depressions 12 </ b> A are formed at a plurality of locations on the top surface of the top plate 12, and the non-slip members 12 </ b> B fitted to the concave portions 12 </ b> A slightly protrude from the top surface of the top plate 12.

  A handle hole 15 is formed in the vertical and horizontal center of the base body 11H. As shown in FIG. 9, the handle hole 15 has, for example, a rectangular shape whose corners are rounded. Further, as shown in FIG. 2, the hanging rib 16 is suspended from the opening edge of the handle hole 15 in the top plate 12. A pair of long side portions 16A of the hanging ribs 16 are formed by a part of a pair of lower surface ribs 14 extending in the longitudinal direction of the top plate 12, and in the center of the pair of short side portions 16B of the hanging ribs 16, The bottom ribs 14 extending in the longitudinal direction of the top plate 12 are orthogonal to each other. In addition, the lower surface of the hanging rib 16 and the surrounding lower surface rib 14 is located above the lower surface of the side wall 13 (see FIG. 3).

  As shown in FIG. 3, the folded wall 20 is folded inward and upward from the lower end portion of the hanging rib 16. The folded wall 20 includes a bottom wall 17 bent at a right angle from the lower end portion of the hanging rib 16, a frame wall 19 bent at a right angle upward from an inner edge of the bottom wall 17, and the bottom wall 17 and the frame wall 19. It consists of the curved wall 18 which continues to each. Further, the upper surface of the frame wall 19 is positioned at the approximate center of the hanging rib 16 in the vertical direction. Furthermore, the lower surface of the bottom wall 17 is flush with the lower surface of the lower surface rib 14, and the outer corners of the bottom wall 17 and the hanging rib 16 are curved surfaces 16 </ b> R that are rounded.

  In addition, although the corner part inside and outside of the hanging rib 16 and the top plate 12 has a so-called pin corner shape that is not chamfered, it may be chamfered. Further, the corner portion between the upper surface and the inner side surface of the frame wall 19 is an arcuate surface 19R that is rounded. Furthermore, the corners of the lower surface and the inner surface of the frame wall 34 described below that overlap the frame wall 19 are also arc surfaces 34R having substantially the same curvature as the arc surface 19R.

  As shown in FIG. 4, a plurality of first connecting ribs 21 and a plurality of second connecting ribs 22 are provided in a frame-like cavity 25 between the hanging rib 16 and the frame wall 19. The second connecting ribs 22 are disposed at the centers of the four sides of the cavity 25 and the centers of the corners. The second connecting rib 22 is orthogonal to the hanging rib 16, the frame wall 19, and the bottom wall 17, and has an upper surface that is flush with the upper surface of the frame wall 19.

  On the other hand, the first connecting rib 21 has a gate shape in which the lower portion of the second connecting rib 22 is cut into a trapezoidal shape, and is disposed at positions near both ends of each side of the cavity 25. The trapezoidal hole that penetrates the lower part of the first connecting rib 21 is an engagement hole 21 </ b> C that is used to prevent the protection member 30 from coming off. Further, in the bottom wall 17, for example, a circular through hole 20 </ b> A is formed at a position directly below the first connecting rib 21.

  As shown in FIG. 3, a protective member 30 is fitted to the upper part of the handle hole 15 of the base body 11 </ b> H from the folded wall 20. The protective member 30 is a resin injection-molded product, and includes a frame wall 34 having substantially the same planar shape as the frame wall 19, a curved wall 33 that curves and protrudes upward from the upper part of the frame wall 34, and a curved wall And a ceiling wall 32 that projects horizontally from the upper end of 33. Then, with the frame wall 34 in contact with the upper surface of the frame wall 19, the ceiling wall 32 is positioned slightly below the upper surface of the top plate 12 in the handle hole 15 of the base body 11 </ b> H. The main body part 35 closes the entire cavity part 25 of the base body 11H.

  As shown in FIG. 5, a plurality of first ribs 36 and a plurality of second ribs 37 are formed on the outer surface of the main body portion 35 of the protection member 30. As shown in FIG. 7, the plurality of first ribs 36 are arranged at positions shifted to the corner portion side of the protective member 30 from the plurality of first connecting ribs 21 of the base body 11H, and the plurality of second ribs 37 are These are disposed on the plurality of second connecting ribs 22 so as to overlap each other.

  As shown in FIG. 6, the corner curved wall 31 suspended from the outer edge curved portion of the ceiling wall 32 between the vertical sides of the outer edges of the first ribs 36 and 36 adjacent to each other with the corner portion of the protection member 30 interposed therebetween. And the second rib 37 is connected to the central portion of each corner curved wall 31. The lower sides of the first ribs 36, 36 facing each other in the vertical and horizontal directions of the main body 35 of the protection member 30 are connected to each other by the bottom wall 38, and the second rib 37 is connected to the center of the bottom wall 38. Yes.

  An elastic engagement piece 40 is suspended from the vicinity of both ends of the lower surface of the bottom wall 38, and a positioning piece 42 is suspended from the vicinity of the center. The elastic engagement piece 40 is disposed at a position slightly shifted from the first rib 36 toward the center side of the bottom wall 38, and has a locking projection 41 at the lower end portion of the surface facing the positioning piece 42. The locking protrusion 41 has a wedge shape in which the protruding amount increases as it goes upward. Further, the corner portion between the side surface on the positioning piece 42 side of the elastic engagement piece 40 and the lower surface of the bottom wall 38 is chamfered. The elastic engagement piece 40 is elastically deformed by the sliding contact between the locking projection 41 and the first connecting rib 21 in the process in which the protection member 30 is placed on the folding wall 20, and is formed on the upper surface of the folding wall 20. When the lower surface of the protection member 30 overlaps, the elastic projection returns and the locking projection 41 engages with the engagement hole 21C as shown in FIG. As a result, the protection member 30 is prevented from falling into the handle hole 15 of the base body 11H.

  The positioning piece 42 has a flat protruding piece structure shorter than the elastic engagement piece 40 and overlaps the second connecting rib 22. Moreover, as shown in FIG. 8, the opposing positioning pieces 42 are arranged point-symmetrically. Specifically, when the positioning piece 42 and the second connecting rib 22 are viewed from above, the positioning pieces 42, 42 on the long side of the protective member 30 are clockwise with respect to the second connecting rib 22, 22. The position determining pieces 42, 42 on the short side of the protective member 30 are overlapped with the second connecting ribs 22, 22 from the position shifted to the second connecting ribs 22, 22, from the position shifted counterclockwise with respect to the second connecting ribs 22, 22. It arrange | positions so that the 2nd communication ribs 22 and 22 may overlap. As shown in FIG. 6, the outer surface of the positioning piece 42 is flush with the outer surface of the bottom wall 38 and overlaps the inner surface of the hanging rib 16 as shown in FIG. On the other hand, the inner surface of the positioning piece 42 overlaps the outer surface of the frame wall 19 as shown in FIG. The elastic engagement piece 40 is narrower than the positioning piece 42, and the inner and outer surfaces of the elastic engagement piece 40 are slightly closer to the center in the width direction of the cavity 25 than the inner and outer surfaces of the positioning piece 42. It is misaligned.

  The description regarding the structure of the base 11 of the trolley | bogie 10 of this embodiment is above. Next, the function and effect of this embodiment will be described. The cart 10 shown in the present embodiment may be carried by passing the hand through the handle hole 15 by folding the hand pressing member 91 shown in FIG. In such a case, in the cart 10 of this embodiment, as shown in FIG. 3, the curved surfaces 18M and 33M by the curved walls 18 and 33 are provided at the lower edge portion and the upper edge portion of the handle hole 15. Therefore, the carriage 10 can be easily lifted without hurting hands. That is, in the base plate 11 of the carriage 10 of the present embodiment, the corner portion of the opening edge of the handle hole 15 is prevented from biting into the hand by assembling the protective member 30 having the curved surface 33M to the base body 11H. This makes it possible to carry the cart 10 stably.

  Further, the hollow portion 25 closed by the base body 11H and the protection member 30 forms a thick and light hollow wall around the handle hole 15, and the stress concentration on the hand passing through the handle hole 15 is suppressed. .

  Further, since the hollow portion 25 is formed between the hanging rib 16 that hangs down from the top plate 12 and the folded wall 20 that is folded inward from the lower end portion thereof, the protection member 30 is attached to the upper surface of the folded wall 20. It is possible to easily close the cavity 25 by overlapping them.

  In addition, since the first connecting rib 21 and the elastic engagement piece 40 that are engagement mechanisms for fixing the protection member 30 are disposed in the cavity 25, their engagement is not easily disengaged, and the protection member 30. The fixation of is stable. Further, since the positioning piece 42 that is a positioning protrusion hanging from the protective member 30 overlaps the plurality of second connecting ribs 22 in the hollow portion 25, the position of the protective member 30 is also stabilized, whereby the first connection is made. The engagement between the rib 21 and the elastic engagement piece 40 is also stable. The first and second connecting ribs 21 and 22 are also used for reinforcing the folded wall 20. Furthermore, since the bottom wall 17 of the folded wall 20 has the plurality of through holes 20A, it is possible to prevent water from collecting in the cavity 25.

[Other Embodiments]
(1) In the above embodiment, the upper surface of the protection member 30 is positioned slightly below the upper surface of the base body 11H. However, the upper surface of the protection member 30 is flush with the upper surface of the base body 11H. It may be located above. Further, the protection member 30 may be configured by a member having higher elasticity than the base body 11H and protrude from the upper surface of the base body 11H, and may also be used as an anti-slip portion for luggage.

  (2) Further, the protection member 30 is fitted into the handle hole 15 of the base body 11H from below and protrudes downward from the lower surface of the base body 11H, so that the anti-slip portion when the trucks 10 are stacked together As an alternative, the protective member 30 may be used. Specifically, the folding wall 20 is folded inward and downward from the upper end of the hanging rib 16 of the base body 11H, and the protective member 30 made of a member having higher elasticity than the base body 11H is attached to the folding wall 20. They may be combined from below and protrude downward from the bottom surface of the base body 11H.

  (3) Moreover, you may color the protection member 30 in the color different from the base body 11H. Specifically, a plurality of carriages 10 having different colors of the protection member 30 may be provided so that the carriages 10 can be distinguished from each other. Further, the protection member 30 may be constituted by a phosphorescent member so that the carriage 10 can be easily found in a dark place by the light emission of the protection member 30.

  (4) Like the base of the cart illustrated in FIG. 10 (A), the flange 50 projects from the approximate center in the vertical direction on the inner surface of the hanging rib 16 of the base body 11H, and above and below the flange 50. It is good also as a structure where protection member 30A, 30B was fixed by the adhesive material or welding.

  (5) Like the base of the carriage illustrated in FIG. 10B, the lower end portion of the inner surface of the rubber protection member 30C is depressed into a stepped shape, and the step surface 60D is formed on the frame wall 19. It is good also as a structure which piles up on an upper surface, and fits the fitting part 60 below the level | step difference surface 60D in 30 C of protection members between the frame wall 19 and the hanging rib 16. FIG. In this case, in the folded wall 20B, for example, the frame wall 19 may be protruded upward from the connecting rib 61 and a fitting portion with the protective member 30C may be provided above the connecting rib 61.

  (6) A structure in which the protective member 30 </ b> D is fitted to the outside of the hanging rib 16 as in the base of the carriage illustrated in FIG. Specifically, the hanging rib 16 shown in the figure does not have the folded wall 20 at the inner lower portion and has a plurality of reinforcing ribs 16L at the outer upper portion. Further, a curved wall 55 is provided at the corner between the hanging rib 16 and the top plate 12. On the other hand, the protection member 30 </ b> D includes a frame wall 53, a bottom wall 51 that is bent at right angles inward from the lower end of the frame wall 53, and a curved wall 52 that communicates between the bottom wall 51 and the frame wall 53. . A plurality of reinforcing ribs 54 that connect the frame wall 53 and the bottom wall 51 are provided inside the frame wall 53. Then, the protection member 30D is fitted to the outside of the hanging rib 16 and fixed to the reinforcing rib 16L by welding, adhesive or the like, and the lower surface of the bottom wall 51 and the lower surface of the hanging rib 16 are flush with each other. There is no.

  (7) Like the protective member 30E shown in FIG. 10D, the protective member 30D of FIG. 10C is deformed, and the inner frame wall 57 is bent at a right angle upward from the inner edge of the bottom wall 51. It is good also as a structure provided with the curved wall 56 which is made to oppose the lower part of the frame wall 53, and connects between the inner side frame wall 57 and the bottom wall 51. FIG. The upper surface of the inner frame wall 57 may be overlapped with the lower surface of the hanging rib 16.

  (8) Although the handle hole 15 of the above-described embodiment is disposed at the center of the base 11 in the vertical and horizontal directions, the handle hole 15 is similar to the base disclosed in FIG. 5 of the above-mentioned Japanese Patent No. 2844295. May be arranged at the edge of the base plate 11. The shape of the handle hole 15 is not limited to a quadrangle, and may be a polygon other than a quadrangle, a circle, an ellipse, an oval, or the like.

  (9) The protective member may not be annular, and may have a structure in which the protective member is provided only in a portion of the handle hole 15 where the hand is addressed by a normal usage method. Specifically, an elongated rectangular handle hole extending along the outer edge of the base plate 11 is provided, and a long protective member is provided only on one long side portion of the handle hole near the outer surface of the base plate. And a curved surface may be formed at a portion of the protective member where the hand can come into contact. Further, for example, in the case where the whole is a frame shape like the base disclosed in FIG. 5 of the above-mentioned Japanese Patent No. 2843295, a protective member with a curved surface is attached to the inner edge of the frame, The inner part of the frame may be used as a handle hole.

10 trolleys 11 pedestals 11H pedestal bodies 12 top plates 15 handle holes 16 hanging ribs 16R, 18M, 33M curved surfaces 20, 20B folding walls 20A through holes 21 first connecting ribs 21C engaging holes 22 second connecting ribs 25 cavities Part 30, 30A-30E Protection member 40 Elastic engagement piece 41 Locking protrusion 42 Positioning piece 54 Reinforcement rib 90 Caster

Claims (7)

A carriage base having a handle hole penetrating vertically,
A base body with casters fixed to the bottom surface;
And a protective member having a curved surface fixed to the base body and capable of contacting a hand passing through the handle hole.   The pedestal of the trolley according to claim 1, further comprising a cavity formed in at least one of the pedestal main body or the protection member and closed by the other.   3. The carriage according to claim 2, further comprising an engagement mechanism that is provided on the base body and the protection member, engages with each other through at least one elastic deformation inside the hollow portion, and fixes the protection member. Base board. In the base body, a top plate on which a load is placed, a hanging rib that is suspended from the top plate and the inside is the handle hole, and folded from the lower end portion of the hanging rib to the upper inside, A folded wall having the hollow portion between the hanging ribs and
The pedestal of the carriage according to claim 2 or 3, wherein the protection member is overlaid on an upper surface of the folded wall. A plurality of communication ribs that communicate between the hanging ribs and the folded wall;
A plurality of engagement holes penetrating at least a part of the plurality of communication ribs among the plurality of communication ribs;
A plurality of elastic engagement pieces hanging from the protection member and engaging the plurality of engagement holes through elastic deformation;
A plurality of through-holes formed at positions where the plurality of connecting ribs having the engagement holes of the folded wall face from above;
The carriage base according to claim 4, wherein   The carriage base according to claim 5, further comprising a plurality of positioning protrusions that are suspended from the protective member and overlap the plurality of connecting ribs in a horizontal direction without undergoing elastic deformation.   The carriage base according to any one of claims 1 to 6, wherein the protection member is made of a member having higher elasticity than the base body and protrudes from an upper surface or a lower surface of the base body.

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