JP6059540B2 - Assembled handcart - Google Patents

Description

  The present invention relates to an assembly-type hand cart used when carrying a load manually, and more particularly to an assembly-type hand cart that can be stored compactly when not in use.

  In a general handcart, a tire holding member that holds a tire is fixed to a lower part of a loading platform on which a load is placed by means such as welding. For this reason, it has a “front-view T-shape” in which the tire protrudes downward from the lower part of the loading platform, and has a problem that it is bulky in both the width direction and the height direction and cannot be stored compactly when not in use. . In order to solve this problem, for example, the types shown in Patent Documents 1 and 2 have been proposed as hand carts that can be stored compactly when not in use. These handcarts (assembled unicycles) are designed so that the tire and the tire holding member are fixed to the cargo bed (the cargo bed main body and the cargo bed frame) while being stored so that the left and right ends of the cargo bed follow the tires. Compacting is achieved by folding downward (see FIG. 2 of Patent Document 1 and FIG. 7 of Patent Document 2).

JP-A-9-118234 JP 2001-58570 A

  The hand carts of the types shown in Patent Documents 1 and 2 are designed to be compact by folding the cargo bed downward along the tire holding member during storage. The direction in which the load is applied when placed is the same as the folding direction of the loading platform. For this reason, the strength of the foldable loading platform cannot withstand the load of the loaded luggage, and this loading platform may be inadvertently folded during use.

  Therefore, an object of the present invention is to store the cargo bed compactly when not in use without impairing the strength of the loading platform.

  In order to solve the above-described problems, the present invention configures an assembling-type hand cart that includes a loading platform on which a load is placed and a tire holding member that is detachably attached to a lower portion of the loading platform.

  Thus, by making the tire holding member detachable with respect to the loading platform and disposing the removed tire holding member along the loading platform, it is possible to achieve compactness during storage without folding the loading platform. For this reason, the high intensity | strength can be ensured compared with the case where this loading platform is made into a foldable type.

Moreover, in the said structure, several receiving parts which consist of a pair of through-holes arranged in the front-back direction of the said loading platform through which the said fastening member passes are formed in the said loading platform, and 1 or 2 or more receiving parts from the several receiving parts And attaching the tire holding member to the selected receiving portion by providing the fastening members in the through holes formed in the pair of connecting plates and the pair of through holes, respectively. Can do.

  If a plurality of receiving portions are formed in this way, for example, if it is desired to ensure the small turnability of the hand cart, the tire holding member is provided at one place in the center in the left-right direction of the cart, When carrying a heavy article, two tire holding members can be provided symmetrically to form a two-wheeled vehicle, and an optimum form of a carriage according to the purpose of use can be selected.

  Moreover, in the said structure, the said receiving part is a through-hole which lets a fastening member pass, and the said tire holding member can be attached to the said loading platform with this fastening member.

  Thus, if it attaches with a fastening member, since a handcart can be assembled and disassembled smoothly, it is very convenient. As this fastening member, it is easy to use a well-known thing like a bolt and a nut, for example.

  In the present invention, the tire holding member is provided detachably from the loading platform. For this reason, when storing compactly, it is not necessary to fold a loading platform, and it can prevent that the intensity | strength of a loading platform falls due to this folding.

The perspective view which shows embodiment of the handcart which concerns on this invention Plan view showing this embodiment Side view showing this embodiment Rear view showing this embodiment Exploded perspective view showing the main part of the present embodiment Side view showing the main part of this embodiment The top view which shows the principal part of this embodiment The front view which shows the principal part of the connection structure of the brace member which concerns on this embodiment The perspective view which shows the principal part of the other example of this embodiment The perspective view which shows the state which decomposed | disassembled the handcart which concerns on this invention into each structural member. The perspective view which shows the state which accommodated each structural member shown in FIG. 10 in the storage box.

  1 to 4 show an embodiment of a hand cart according to the present invention. The handcart includes a loading platform 1 on which a load is placed, a tire holding member 2 detachably attached to a lower portion of the loading platform 1, a tire 3 held by the tire holding member 2, and a rear side of the loading platform 1. The handle portion 4 provided in a detachable manner is used as a basic constituent member.

  The loading platform 1 includes a rectangular outer frame 5 made of a hollow columnar member, two columnar vertical beams 6 and 6 provided in the front-rear direction inside the outer frame 5, and a cross section provided in the left-right direction. L-shaped two transverse beams 7 and 7 are provided. In other words, the loading platform 1 has three left and right portions of the outer frame 5 (left outer frame 5a and right outer frame 5b), two vertical beams 6 and 6, and two horizontal beams 7 and 7. It is divided into two (see FIG. 2 etc.). A through hole 9 is formed in the central portion of each section of each cross beam 7 as a receiving portion through which a bolt 8 that is a fastening member for fixing the tire holding member 2 is passed.

  The tire holding member 2 includes two substantially U-shaped support columns 10 and 10 arranged side by side, a pair of connecting plates 11 and 11 that connect the front and rear ends of both support columns 10 and 10, and the tire 3. And a bearing portion 13 for receiving the rotating shaft. A through hole 12 through which the bolt 8 is passed is formed in the central portion of the continuous plate 11. When the through holes 12 are aligned with the through holes 9 formed in the cross beam 7 and the bolts 8 are screwed in, the tire holding member 2 can be firmly attached to the lower portion of the loading platform 1. On the other hand, the tire holding member 2 (tire 3) can be easily removed from the loading platform 1 by loosening the bolt 8 during storage.

  Thus, by making the tire holding member 2 detachable, unlike the configuration in which the loading platform 1 is folded to make it compact as shown in the prior art, the loading platform 1 can be made compact without folding. For this reason, the intensity | strength of the loading platform 1 is not impaired, and a load can be conveyed stably.

  The tire 3 is held with its rotating shaft fitted into the bearing portion 13 of the tire holding member 2. The tire 3 has a substantially heart-shaped cross section in the circumferential direction. That is, in a straight traveling state of the tire, the tire 3 is grounded by the two heart-shaped protrusions 14 and 14 in the circumferential direction, and is not directly grounded in the circumferential groove 15 at the center in the width direction of the tire 3. It is in a state.

  In general, an arc-shaped tire has a sandy surface or a muddy road surface, and sand or the like is pushed to both sides in the width direction of the tire, and as a result, the tire may sink into the road surface and may be difficult to travel. . On the other hand, in the tire 3 having a heart-shaped cross section, in such a road surface condition, the slope formed in the region sandwiched between the two protrusions 14, 14, sand and the like around the center in the width direction of the tire 3. Guide to the groove 15. The guided sand or the like supports the tire 3. For this reason, the effect | action of preventing that a tire digs into the road surface deeply is exhibited.

  Further, in a general tire having an arc shape in cross section, when the tire is inclined to one of the left and right sides and the ground contact portion is deviated from the center in the width direction, the tire tends to meander and run unstable. On the other hand, since the tire 3 having a heart-shaped cross section is stably grounded by the two ridges 14 and 14, it is less likely to meander as compared with a general tire and it is easy to maintain a stable running state. There is also a merit that.

  In this embodiment, as shown in FIG.5 and FIG.6, the tire holding member 2 is attached with the volt | bolt 8 to the center division among the three said divisions, and this handcart is comprised in the shape of a unicycle. Instead of the unicycle shape as described above, as shown by a two-dot chain line in FIG. 7, the tire holding member 2 can be attached to the two sections on both ends in the width direction to form a two-wheel vehicle shape. In this way, since the burden on each tire 3 is reduced, the traveling stability can be improved particularly when a heavy object is transported.

  A handle part 4 is detachably attached to the rear side of the loading platform 1 with bolts 16. The lower end of the handle portion 4 also serves as a support leg 17 of the hand cart, and the vicinity of the grounding portion of the support leg 17 and the vertical beam 6 are connected by a brace member 18. The bracing member 18 prevents the handle portion 4 from being distorted by the weight of the load placed on the loading platform 1 when the handcart is used. The bracing member 18 and the longitudinal beam 6 are fixed by a bolt 19, and the support leg 17 is fixed by a bolt 19 via a mounting jig 20 welded to the support leg 17 as shown in FIG. 8. . At the time of storage, the bolt 19 can be loosened and the bracing member 18 can be easily removed.

  A guard 21 is attached to the front end of the loading platform 1. The guard 21 prevents the load placed on the loading platform 1 from dropping off from the front end of the loading platform 1. The guard 21 may be configured to be fixed to the front portion (front outer frame 5c) of the outer frame 5 of the loading platform 1 (see FIG. 1 and the like), but as shown in FIG. 9, the guard 21 and the front outer frame 5c Are integrally formed, and the front outer frame 5c is provided with four insertion portions 22a, 22b, 22c, 22d toward the rear side of the loading platform 1, and the insertion portions 22a, 22b, 22c, 22d are arranged on the left and right sides. It can also be set as the structure inserted in the frames 5a and 5b and the vertical beam 6. FIG. In this configuration, in order to facilitate the insertion, for example, the two insertion portions 22a and 22d located at both ends of the insertion portions 22a, 22b, 22c and 22d are located on the inner side. It is preferable that the length is slightly longer than the two insertion portions 22b and 22c. If the length is changed in this way, at the time of insertion, the two insertion portions 22a and 22d at both ends are first inserted into the left and right outer frames 5a and 5b, and then the two inner insertions are inserted. Compared with the case where all the insertion portions 22a, 22b, 22c, 22d are inserted into the left and right outer frames 5a, 5b and the two vertical beams 6, 6 as if the insertion portions 22b, 22c were inserted. Can be done smoothly.

  Moreover, in this insertion type structure, it is preferable to provide the loading platform 1 with a fixing member such as a bolt that fixes the insertion portions 22a, 22b, 22c, and 22d at an arbitrary insertion depth. By providing this fixing member, it is possible to reliably prevent the guard 21 from being accidentally falling off during use of the handcart, and the length of the loading platform 1 in the front-rear direction corresponding to the size of the load to be placed. Can be fixed to a desired length.

  As shown in FIG. 10, the hand cart can be disassembled into a loading platform 1, a tire holding member 2, a tire 3, a handle portion 4, and a bracing member 18. FIG. 11 shows a state in which the set of components of the handcart in the disassembled state is stored in the storage box B. In this embodiment, since the thickest component member is the tire holding member 2, if there is a storage box B deep enough to store the tire holding member 2 lying sideways, all the component members can be made compact. Can be stored together. The storage method shown in the figure is merely an example, and the storage order, orientation, and the like of each component can be changed as appropriate.

  In this embodiment, although the aspect which mounted | worn with the tire 3 of a heart-shaped cross section was shown, as a tire 3, the general tire which made the cross-sectional arc shape can also be mounted | worn of course.

  Moreover, in this embodiment, it was set as the structure which provided the two horizontal beams 7 and 7 in the front side rather than the center of the loading platform 1, However, The horizontal beam 7 is similarly provided in the rear side rather than the center of this loading platform 1, It may be a tricycle shape or a four-wheel vehicle shape. In this way, if there are three or more wheels, the handcart can be made independent only by the plurality of tires 3. For this reason, the physical burden of the user can be reduced as compared with the case of the unicycle shape or the two-wheel vehicle shape in which a part of the load of the load is supported by the user's hand.

  Moreover, in this embodiment, it was set as the structure accommodated without folding the loading platform 1, However, As long as the intensity | strength is not impaired, this loading platform 1 can also be made into a folding type.

  The above embodiment is merely an example, and as long as the problem of achieving compactness during storage while securing the strength of the loading platform 1 of the present invention can be solved, a part of the constituent members may be omitted, Of course, it is permissible to appropriately change the shapes of the constituent members.

DESCRIPTION OF SYMBOLS 1 Loading platform 2 Tire holding member 3 Tire 4 Handle part 5 Outer frame 5a Left outer frame 5b Right outer frame 5c Front outer frame 6 Vertical beam 7 Horizontal beam 8 Bolt (fastening member)
9 Through hole (receiving part)
DESCRIPTION OF SYMBOLS 10 Support | pillar 11 Connecting plate 12 Through hole 13 (of connecting plate) Bearing part 14 Projection 15 Circumferential groove 16 Bolt 17 Support leg 18 Bracing member 19 Bolt 20 Mounting jig 21 Guards 22a, 22b, 22c, 22d Insertion part B Storage box

Claims (1)

A loading platform (1) for loading luggage;
Two substantially U-shaped struts (10, 10), which are detachably attached to the lower part of the loading platform (1) and arranged side by side, and the front and rear ends of both struts (10, 10) are connected to each other. A pair of connecting plates (11, 11) each formed with a through hole (12) through which the fastening member (8) is passed in the center, and a bearing portion (13) that receives the rotating shaft of the tire (3), the tire holding member that have a (2), provided with,
A plurality of receiving portions (9) including a pair of through holes (9) arranged in the front-rear direction of the loading platform (1) through which the fastening member (8) is passed are formed on the loading platform (1), and the plurality of receiving portions are formed. Selecting one or two or more receiving portions (9) from (9), and connecting the fastening members (8) to the through holes (12) formed in the pair of connecting plates (11, 11), And the assembly-type handcart which attached the said tire holding member (2) to the selected receiving part (9) by providing in a pair of said through-hole (9) .

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