Foldable dolly

Abstract

To provide a foldable dolly which can be easily handled and stored in a folded state.SOLUTION: A foldable dolly 10 which can be folded and unfolded, includes a first leg 11 and a second leg 12 configured to be grounded at a place of use; a base link 13 provided between the first leg 11 and the second leg 12 and configured to connect the first leg 11 and the second leg 12 such that they are moved close to and away from each other along a first direction D1; a first stand frame 14 and a second stand frame 15 attachable to and detachable from the first leg 11 and the second leg 12, respectively, and configured to fix a distance by which the first leg 11 and the second leg 12 are moved away from each other in the first direction D1; and the first stand frame 14 and the second stand frame 15 attachable to and detachable from the first leg 11 and the second leg 12, respectively, and configured to support an object.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a foldable dolly that can be folded and unfolded. [Background technology]

[0002] An example of a folding dolly that can be folded and unfolded is described in Patent Document 1. The folding dolly described in Patent Document 1 has a pair of left and right article mounting plates in multiple upper and lower stages, with opposing free ends pivotally attached in the vertical direction. The folding dolly described in Patent Document 1 is foldable in a mountain fold by pivoting the base ends of the left and right article mounting plates to a pair of front and rear legs having wheels at their lower ends. Furthermore, the folding dolly described in Patent Document 1 is provided with a restricting means for restricting the rotation of the pair of left and right article mounting plates in the valley fold direction in each stage. Furthermore, the folding dolly described in Patent Document 1 is such that the free ends of the pair of left and right article mounting plates in the multiple stages are pivotally attached to a connecting rod extending in the vertical direction in either the front or rear direction so as to be rotatable. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2023-7258 Summary of the Invention [Problem to be solved by the invention]

[0004] The inventor of the present application recognized that the folding cart described in Patent Document 1 has a pair of legs in a folded state, and a rod extending in the vertical direction is located between the pair of legs. Therefore, the folding cart described in Patent Document 1 has a problem that it is difficult to handle and store in a folded state.

[0005] An object of the present disclosure is to provide a foldable dolly that is easy to handle and store when folded. [Means for solving the problem]

[0006] The present disclosure relates to a foldable cart that can be folded and unfolded, comprising: a first leg and a second leg that are grounded to a place of use; a connecting member that is provided between the first leg and the second leg and connects the first leg and the second leg so that the first leg and the second leg can move closer to and apart along a first direction; a distance fixing member that can be attached to and detached from the first leg and the second leg and is attached to the first leg and the second leg to fix the distance between the first leg and the second leg in the first direction; and an object support member that can be attached to and detached from the first leg and the second leg and is attached to the first leg and the second leg to support an object. Effect of the Invention

[0007] The folding dolly of the present disclosure is easy to handle and store in the folded state. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a perspective view showing the folding cart in use. [Diagram 2] 1 is a perspective view of a folding cart in which a support unit is provided and a first stand frame and a second stand frame are separated from each other. FIG. [Diagram 3] FIG. 2 is a perspective view of the support unit in a folded state. [Figure 4] FIG. 4 is a side view of a first base frame of the folding cart. [Diagram 5] FIG. 13 is a side view of the support unit in an unfolded state. [Figure 6] FIG. 13 is a side view of the support unit in a folded state. [Figure 7] FIG. 2 is a plan view showing the folding cart in use. [Figure 8] FIG. 13 is a bottom view of the support unit in a folded state. [Figure 9]FIG. 4 is a side view of a second base frame of the folding cart. [Figure 10] FIG. 4 is a plan view of the support unit in a folded state. [Figure 11] FIG. 13 is an exploded perspective view showing an application example of the folding cart. [Figure 12] FIG. 12 is a perspective view showing the folding cart of FIG. 11 in an assembled state. [Figure 13] FIG. 2 is an exploded perspective view of three stand frames and a support. [Figure 14] FIG. 13 is a perspective view of three stand frames supported by supports. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] (overview) Some embodiments of the folding dolly are described with reference to the drawings. The state of the folding dolly can be switched between a folded storage state and an unfolded use state. The folding dolly is placed at a place of use to support an object. The place of use includes the ground, road surface, temporary floor, etc. at a construction site, a work site, etc. The object supported by the folding dolly includes construction materials, scaffolding elements, etc. A user can lift the folding dolly with a forklift and transport the folding dolly. In the drawings for explaining the embodiments of the folding dolly, the same parts are basically given the same reference numerals, and the repeated description is omitted.

[0010] (Example of a folding cart) The folding cart 10 shown in Fig. 1 and Fig. 2 has a first leg 11, a second leg 12, a base link 13, a first stand frame 14, and a second stand frame 15. As shown in Fig. 3, the first leg 11, the second leg 12, and the base link 13 are connected to form a support unit 60. The first stand frame 14 and the second stand frame 15 are separate components. The first stand frame 14 and the second stand frame 15 are attached to and detached from the support unit 60, respectively.

[0011] (Description of the first base frame) As shown in Figs. 3 and 4, the first leg 11 has a base frame 16 and two connecting parts 17, 18 fixed to the base frame 16. The second stand frame 15 is attached to and detached from the connecting part 17. The first stand frame 14 is attached to and detached from the connecting part 18. The base frame 16 is made of, for example, a square pipe. The base frame 16 bears the load of an object W1 placed on the first stand frame 14 and the second stand frame 15. The base frame 16 and the two connecting parts 17, 18 are both made of metal, for example, aluminum, steel, etc. The folding cart 10 is placed at a usage location A1.

[0012] When the upper surface of the use location A1 is approximately horizontal, the base frame 16 is disposed approximately horizontally. As shown in FIG. 5 and FIG. 6, the base frame 16 has a first component plate 16A, a second component plate 16B, a third component plate 16C, and a fourth component plate 16D. The first component plate 16A is connected to the second component plate 16B and the fourth component plate 16D. The third component plate 16C is connected to the second component plate 16B and the fourth component plate 16D. The first component plate 16A is disposed above the third component plate 16C in the vertical direction, that is, in the direction of gravity. The first component plate 16A and the third component plate 16C are disposed in parallel. The first component plate 16A and the third component plate 16C are disposed approximately horizontally. The second component plate 16B and the fourth component plate 16D are disposed in parallel.

[0013] As shown in FIG. 4, the two connecting parts 17, 18 protrude upward from the first component plate 16A in the second direction D2. The second direction D2 is different from the first direction D1. When the folding cart 10 is placed at the use location A1, the second direction D2 is a substantially vertical direction, i.e., a substantially height direction. The two connecting parts 17, 18 are disposed at an interval in the longitudinal direction of the base frame 16. The two connecting parts 17, 18 are fixed to the first component plate 16A by welding. The connecting parts 17, 18 protrude from the first component plate 16A.

[0014] As shown in FIG. 4, a plurality of casters 19, for example, three casters 19, are attached to the third component plate 16C. The three casters 19 are arranged at intervals in the longitudinal direction of the base frame 16. Each of the three casters 19 has a mounting seat 20, a fork 21, and a wheel 22. The mounting seat 20 is fixed to the third component plate 16C, for example, by welding. The mounting seat 20 has a plate shape. As shown in FIG. 5, a horizontal portion of the mounting seat 20 protrudes in a substantially horizontal direction relative to the surface of the second component plate 16B. The fork 21 is rotatably attached to the mounting seat 20. The wheel 22 is rotatably supported by the fork 21. The wheel 22 is grounded to the use location A1.

[0015] As shown in FIG. 7, an engagement hole 23 is provided penetrating the first component plate 16A in the thickness direction. The engagement hole 23 is disposed between the connecting portion 17 and the connecting portion 18 in the longitudinal direction of the base frame 16. A restricting plate 24 is provided in the first component plate 16A. The restricting plate 24 is disposed between the connecting portion 17 and the engagement hole 23 in the longitudinal direction of the base frame 16. The restricting plate 24 is made of metal, and is fixed to the first component plate 16A, for example, by welding. The restricting plate 24 is plate-shaped, and extends in a substantially horizontal direction. A portion of the restricting plate 24 protrudes in a substantially horizontal direction from the surface of the second component plate 16B.

[0016] As shown in Figures 1, 2, 3 and 7, the connecting plate 25 is provided on the first component plate 16A. When the first leg 11 is viewed from directly above as in Figure 7, the connecting plate 25 is disposed between the coupling portion 18 and the engagement hole 23 in the longitudinal direction of the base frame 16. The connecting plate 25 is fixed to the first component plate 16A by a fixing element, for example, a screw. The connecting plate 25 extends in a substantially horizontal direction. As shown in Figures 5 and 7, a portion of the connecting plate 25 protrudes in a substantially horizontal direction from the surface of the second component plate 16B.

[0017] As shown in Fig. 8, the connecting plate 26 is provided on the third component plate 16C. The connecting plate 26 is disposed at the same position as the connecting plate 25 in the longitudinal direction of the base frame 16. The connecting plate 26 is fixed to the third component plate 16C, for example, by welding. The connecting plate 26 extends in a substantially horizontal direction. As shown in Figs. 5 and 8, a part of the connecting plate 26 protrudes in a substantially horizontal direction from the surface of the second component plate 16B. As shown in Fig. 5, the connecting plate 25 and the connecting plate 26 are disposed across the base frame 16, and the connecting plate 25 and the connecting plate 26 are disposed in parallel.

[0018] (Explanation of the second base frame) 3 and 9, the second leg 12 has a base frame 36 and connecting parts 37, 38 fixed to the base frame 36. The second stand frame 15 is attached to and detached from the connecting part 37. The first stand frame 14 is attached to and detached from the connecting part 38. The base frame 36 is made of, for example, a square pipe. The base frame 36 bears the load of an object W1 placed on the first stand frame 14 and the second stand frame 15.

[0019] The base frame 36 and the two connecting parts 37, 38 are both made of metal, such as aluminum, steel, etc. The connecting parts 37, 38 are both circular pipes. When the upper surface of the use location A1 shown in FIG. 9 is substantially horizontal, the base frame 36 is disposed substantially horizontally. As shown in FIG. 5 and FIG. 6, the base frame 36 has a first component plate 36A, a second component plate 36B, a third component plate 36C, and a fourth component plate 36D. The first component plate 36A is connected to the second component plate 36B and the fourth component plate 36D. The third component plate 36C is connected to the second component plate 36B and the fourth component plate 36D.

[0020] The first component plate 36A is disposed above the third component plate 36C in the vertical direction. The first component plate 36A and the third component plate 36C are disposed in parallel. The first component plate 36A and the third component plate 36C are disposed substantially horizontally. The second component plate 36B and the fourth component plate 36D are disposed in parallel. As shown in FIG. 9, the two connecting portions 37, 38 protrude upward from the first component plate 36A in the second direction D2. The two connecting portions 37, 38 are disposed at an interval in the longitudinal direction of the base frame 36. The two connecting portions 37, 38 are fixed to the first component plate 36A by welding. The two connecting portions 37, 38 protrude from the first component plate 36A.

[0021] As shown in FIG. 9, a plurality of casters 39, for example, three casters 39, are attached to the third component plate 36C. The three casters 39 are arranged at intervals in the longitudinal direction of the base frame 36. Each of the three casters 39 has a mounting seat 40, a fork 41, and a wheel 42. The mounting seat 40 is fixed to the third component plate 36C, for example, by welding. The mounting seat 40 has a plate shape. As shown in FIG. 5, a horizontal portion of the mounting seat 40 protrudes in a substantially horizontal direction relative to the surface of the second component plate 36B. As shown in FIG. 9, the fork 41 is rotatably attached to the mounting seat 40. The wheel 42 is rotatably supported by the fork 41. The wheel 42 is grounded to the use location A1.

[0022] As shown in FIG. 3, an engagement hole 43 is provided penetrating the first component plate 36A in the thickness direction. The engagement hole 43 is disposed between the connecting portion 37 and the connecting portion 38 in the longitudinal direction of the base frame 36. A restricting plate 44 is provided on the first component plate 36A. The restricting plate 44 is disposed between the connecting portion 38 and the engagement hole 43 in the longitudinal direction of the base frame 36. The restricting plate 44 is made of metal, and is fixed to the first component plate 36A, for example, by welding. The restricting plate 44 is plate-shaped, and extends in a substantially horizontal direction. A portion of the restricting plate 44 protrudes in a substantially horizontal direction from the surface of the second component plate 36B.

[0023] As shown in Figures 1, 2, 3, and 7, the connecting plate 45 is provided on the first component plate 36A. When the second leg 12 is viewed from directly above as in Figure 7, the connecting plate 45 is disposed between the coupling portion 37 and the engagement hole 43 in the longitudinal direction of the base frame 36. The connecting plate 45 is fixed to the first component plate 36A by a fixing element, for example, a screw. The connecting plate 35 extends in a substantially horizontal direction. As shown in Figures 5 and 7, a portion of the connecting plate 45 protrudes in a substantially horizontal direction from the surface of the second component plate 36B.

[0024] As shown in Fig. 8, the connection plate 46 is provided on the third component plate 36C. The connection plate 46 is disposed at the same position as the connection plate 45 in the longitudinal direction of the base frame 36. The connection plate 46 is fixed to the third component plate 36C, for example, by welding. The connection plate 46 extends in a substantially horizontal direction. As shown in Figs. 5 and 8, a part of the connection plate 46 protrudes in a substantially horizontal direction from the surface of the second component plate 36B. As shown in Fig. 5, the connection plate 45 and the connection plate 46 are disposed across the base frame 36, and the connection plate 45 and the connection plate 46 are disposed in parallel.

[0025] As shown in Figs. 1, 2, 3, 5, 6, 7, and 10, the fixed handle 47 is provided on the first component plate 36A. As shown in Fig. 6, the fixed handle 47 has a free end 47A and a support end 47B. As shown in Fig. 7, when the second leg 12 is viewed in a plan view, the fixed handle 47 can be operated within a predetermined angle range centered on the support end 47B on the first component plate 36A. The support end 47B is disposed between the engagement hole 43 and the regulating plate 44 in the longitudinal direction of the base frame 36. The fixed handle 47 can be operated in the vertical direction relative to the base frame 36 in Figs. 5 and 6. A compression spring 56 is provided in the base frame 36, and the compression spring 56 is an element that biases the fixed handle 47 toward the third component plate 36C.

[0026] (Base link explanation) The first leg 11 and the second leg 12 are arranged such that the second component plate 16B and the second component plate 36B are located between the fourth component plate 16D and the fourth component plate 36D as shown in Figs. 5 and 7. The base link 13 is arranged between the first leg 11 and the second leg 12 as shown in Figs. 1 and 7, which show the use state of the folding cart 10. As shown in Figs. 2 and 5, the base link 13 connects the base frame 16 and the base frame 36 so that they can move toward and away from each other along the first direction D1. When the folding cart 10 is placed at the use location A1, the first direction D1 is approximately horizontal.

[0027] The base link 13 is made of a metal such as aluminum or steel, and is hollow. The base link 13 is disposed between the base frame 16 and the base frame 36. As shown in FIG. 5, a first end of the base link 13 in the longitudinal direction is disposed between the connection plate 25 and the connection plate 26. A support shaft 48 is attached to the connection plates 25 and 26. As shown in FIG. 7, when the first leg 11 is viewed from directly above, the base link 13 is operable within a predetermined angle range centered on the support shaft 48.

[0028] As shown in Fig. 5, a second longitudinal end of the base link 13 is disposed between the connecting plates 45 and 46. A support shaft 49 is attached to the connecting plates 45, 46. As shown in Fig. 7, when the second leg 12 is viewed from directly above, the base link 13 is movable within a predetermined angle range centered on the support shaft 49. The first leg 11 and the second leg 12 are separately movable relative to the base link 13. The connection structure of the first leg 11, the second leg 12 and the base link 13 is an open link, i.e., an open loop structure.

[0029] (Explanation of the first stand frame) The first stand frame 14 supports the object W1 together with the second stand frame 15. The first stand frame 14 is placed across the base frame 16 and the base frame 36. The first stand frame 14 has columns 50, 51 and a support base 52. The columns 50, 51 and the support base 52 are each a square pipe. The columns 50, 51 and the support base 52 are each made of a metal, such as aluminum or steel. The support base 52 is connected to the columns 50, 51, for example, fixed by welding.

[0030] 4, when the first stand frame 14 is lowered, the support pillar 50 is attached to the connecting portion 18. That is, the connecting portion 18 is located inside the support pillar 50. Also, when the first stand frame 14 is lowered, the support pillar 51 is attached to the connecting portion 38 as shown in FIG. 9. That is, the connecting portion 38 is located inside the support pillar 51.

[0031] When the first stand frame 14 is placed across the base frames 16 and 36 as in Fig. 1, the support pillar 50 protrudes upward from the first component plate 16A, and the support pillar 51 protrudes upward from the first component plate 36A. As in Fig. 4, the height of the support pillar 50 exceeds the height of the connecting portion 18. As in Fig. 9, the height of the support pillar 51 exceeds the height of the connecting portion 38. In addition, the support base 52 is placed on the first component plates 16A, 36A and is supported approximately horizontally.

[0032] 4, when the first stand frame 14 is raised, the support pillar 50 is removed from the connecting portion 18. When the first stand frame 14 is raised, the support pillar 51 is removed from the connecting portion 38, as shown in FIG.

[0033] (Explanation of the second stand frame) The second stand frame 15 is placed across the base frame 16 and the base frame 36. The second stand frame 15 has columns 53, 54 and a support base 55. The columns 53, 54 and the support base 55 are each a square pipe. The columns 53, 54 and the support base 55 are each made of a metal, such as aluminum or steel. The support base 55 is connected to the columns 53, 54, for example, fixed by welding.

[0034] 4, when the second stand frame 15 is lowered, the support pillar 53 is attached to the connecting portion 17. That is, the connecting portion 17 is located inside the support pillar 53. When the second stand frame 15 is lowered, the support pillar 54 is attached to the connecting portion 37 as shown in FIG. 9. That is, the connecting portion 37 is located inside the support pillar 54.

[0035] When the second stand frame 15 is placed across the base frame 16 and the base frame 36 as in Fig. 1, the support pillar 53 protrudes upward from the first component plate 16A, and the support pillar 54 protrudes upward from the first component plate 36A. As in Fig. 4, the height of the support pillar 53 exceeds the height of the connecting portion 17. As in Fig. 9, the height of the support pillar 54 exceeds the height of the connecting portion 37. In addition, the support base 55 is placed on the first component plates 16A, 36A and supported approximately horizontally.

[0036] 1, when the first stand frame 14 and the second stand frame 15 are placed on the base frames 16, 36, the support bases 52, 55 are located between the columns 50, 51 and the columns 53, 54 in the longitudinal direction of the base frames 16, 36. Furthermore, when the second stand frame 15 is raised as shown in FIG. 4, the column 53 is removed from the connecting portion 17. Furthermore, when the second stand frame 15 is raised as shown in FIG. 9, the column 54 is removed from the connecting portion 37.

[0037] (Example of using a folding cart) The folding cart 10 of the present disclosure can be switched between a folded storage state and an unfolded use state. Figures 1, 4, 7, and 9 show the use state of the folding cart 10. In the use state of the folding cart 10, the first stand frame 14 and the second stand frame 15 are attached to the first leg 11 and the second leg 12. More specifically, the support pillar 53 is attached to the connecting portion 17, and the support pillar 54 is attached to the connecting portion 37. In addition, the support pillar 50 is attached to the connecting portion 18, and the support pillar 51 is attached to the connecting portion 38.

[0038] Therefore, the first stand frame 14 and the second stand frame 15 fix the distance, i.e., the interval, between the first leg 11 and the second leg 12. As shown in Fig. 7, when the folding cart 10 is viewed from directly above, the support base 52 and the support base 55 are arranged in parallel, and the base frame 16 and the base frame 36 are arranged in parallel. The free end 47A of the fixed handle 47 is inserted into the engagement hole 43, and the fixed handle 47 is fixed to the base frame 36.

[0039] Then, a rectangular object W1 is inserted between the supports 50, 53 and the supports 51, 54, and the object W1 is placed on the support bases 52, 55. The object W1 has a size that exceeds the distance between the support bases 52 and 55 in the longitudinal direction of the base frames 16, 36. Therefore, the object W1 is supported by both the support bases 52, 55 even if it is a single object.

[0040] The worker runs the forklift and approaches the folding cart 10. Then, the forks of the forklift enter below the base frames 16, 36, and the forklift is stopped. Furthermore, when the forks are raised, the folding cart 10 carrying the object W1 is lifted from the use location A1. After that, the worker can run the forklift. Furthermore, after the forklift reaches the target location, the worker stops the forklift. Next, when the worker lowers the forks, the folding cart is lowered and the wheels 22, 42 are grounded at the use location A1. The worker further lowers the forks to separate the forks from the base frames 16, 36, and then the forklift is moved backward to remove the forks from between the base frames 16, 36 and the use location A1.

[0041] After removing the object from the folding cart 10, the worker can switch the folding cart 10 from the use state shown in Fig. 1 to the storage state. The worker first raises the first stand frame 14 and the second stand frame 15, and removes the first stand frame 14 and the second stand frame 15 from the first leg 11 and the second leg 12, as shown by the two-dot chain lines in Figs. 4 and 9. The worker then moves at least one of the first leg 11 and the second leg 12 along the use location A1 to bring the base frame 16 and the base frame 36 closer to each other.

[0042] Furthermore, the worker brings the base frames 16, 36 and the base link 13 into a substantially parallel state as shown in FIG. 10. Furthermore, the worker stops the first leg 11, the second leg 12 and the base link 13. Furthermore, the worker holds the fixed handle 47 with his / her hand and moves the fixed handle 47 upward against the force of the compression spring 56. Then, the worker moves the fixed handle 47 around the support end 47B. After that, when the worker releases his / her hand from the fixed handle 47, the fixed handle 47 is moved downward by the force of the compression spring 56.

[0043] Therefore, as shown in Fig. 6, the free end 47A enters the engagement hole 23 and the fixed handle 47 stops. That is, the support unit 60 is held in a closed state. When the support unit 60 is closed, the base frame 16, the base link 13 and the base frame 36 are closest to each other. In this manner, the folding cart 10 is switched from the use state shown in Figs. 1 and 7 to the storage state shown in Figs. 3 and 10.

[0044] Next, the operation of an operator switching the folding cart 10 from the stored state to the usage state will be described. The operator grips the fixed handle 47 with his / her hand and operates the fixed handle 47 in a direction to move the fixed handle 47 away from the base link 13 against the force of the compression spring 56. Then, the free end 47A is pulled out of the engagement hole 23. Then, the operator rotates the fixed handle 47 within a predetermined angle range, and then releases the fixed handle 47. Then, the fixed handle 47 is operated by the force of the compression spring 56, the free end 47A enters the engagement hole 43, and the fixed handle 47 is stopped.

[0045] Furthermore, with the wheels 22, 42 in contact with the use location A1, the worker separates the first leg 11 from the second leg 12. Next, the worker maintains a predetermined distance between the first leg 11 and the second leg 12 as shown in FIG.

[0046] The worker lifts up the first stand frame 14. Then, as shown in Figs. 4 and 9, the worker lowers the first stand frame 14 to insert the connecting portion 18 into the support column 50 and the connecting portion 38 into the support column 51. In this manner, the worker places the first stand frame 14 on the first leg 11 and the second leg 12 as shown in Fig. 1.

[0047] The worker also lifts up the second stand frame 15. Furthermore, as shown in Figs. 4 and 9, the worker lowers the second stand frame 15 to cause the connecting portion 17 to enter the support column 53 and the connecting portion 37 to enter the support column 54. In this manner, the worker places the second stand frame 15 on the first leg 11 and the second leg 12 as shown in Fig. 1. When the worker performs the above operations and attaches the first stand frame 14 and the second stand frame 15 to the first leg 11 and the second leg 12 as shown in Fig. 1, the folding cart 10 is ready for use.

[0048] (Effect of the folding cart) When the folding cart 10 is in use, it may be tilted in such a direction that the height of the base frame 16 differs from the height of the base frame 36. The folding cart 10 may also be subjected to vibration. In such a case, any of the supports 50, 51, 53, and 54 of the folding cart 10 may come into contact with the object W1. Therefore, the folding cart 10 can prevent the object W1 supported by the supports 52 and 55 from moving.

[0049] When the folding cart 10 is viewed from directly above as in Fig. 7, a substantially rectangular frame is formed by the base frames 16, 36 and the support bases 52, 55. Also, the base links 13, which are arranged inside the substantially rectangular frame formed by the base frames 16, 36 and the support bases 52, 55, are arranged as if they were diagonal braces. Therefore, when the folding cart 10 is viewed from directly above as in Fig. 7, its strength against substantially horizontal loads is increased.

[0050] When the folding cart 10 is in the stored state, the first stand frame 14 and the second stand frame 15 can be separated. Also, the folding cart 10 allows the first stand frame 14 and the second stand frame 15 and the support unit 60 to be separated. In other words, the first stand frame 14 and the second stand frame 15 and the support unit 60 can be handled and stored separately. Therefore, it is easy for an operator to handle and store the folding cart 10.

[0051] When the folding cart 10 is in the stored state, the restricting plates 24, 44 come into contact with the base link 13. In addition, the connecting plates 25, 26 fixed to the base frame 16 support the base link 13 by sandwiching it therebetween. In addition, the connecting plates 45, 46 fixed to the base frame 36 support the base link 13 by sandwiching it therebetween. Therefore, the base frame 16, the base frame 36, and the base link 13 can be prevented from moving relatively to one another in the up-down direction in FIG. 6 .

[0052] When the folding cart 10 is in the stored state, the base link 13 is sandwiched between the restricting plates 24 and 44 and the mounting seats 20 and 40, and the base link 13 is positioned in the second direction D2 with respect to the first leg 11 and the second leg 12. Therefore, the base link 13, the first leg 11, and the second leg 12 can be prevented from moving relatively to each other in the up-down direction in FIG. 6. Also, when the folding cart 10 is in the stored state, the free end 47A of the fixed handle 47 is inserted into the engagement hole 23 of the base frame 16. Therefore, the support unit 60 can be reliably maintained in the closed state.

[0053] (Application example of a folding trolley) 11 and 12 show an application example of the folding cart 10. In the application example of the folding cart 10, the first stand frame and the second stand frame can be stacked in a plurality of stages in the height direction.

[0054] The folding cart 10 shown in Fig. 11 and Fig. 12 has connecting members 61, 62, 63, 64, first stand frames 14, 14A, 14B, and second stand frames 15, 15A, 15B. The connecting members 61, 62, 63, 64 are, for example, made of pipes with a circular cross section. The connecting members 61, 62, 63, 64 are each made of a metal, such as aluminum or steel. The connecting members 61, 62, 63, 64 each have the same overall length. The connecting members 61, 62, 63, 64 each have a total length that is more than twice the total length of the support columns 50, 51, 53, 54.

[0055] The material and structure of each of the first stand frames 14A, 14B are the same as the material and structure of the first stand frame 14. The material and structure of each of the second stand frames 15A, 15B are the same as the material and structure of the second stand frame 15. With an object placed on the support base 52 of the first stand frame 14 and the support base 55 of the second stand frame 15, the worker can perform the next task.

[0056] Connecting member 61 is inserted into support 50, and the lower end of connecting member 61 comes into contact with the upper end of connecting portion 18 shown in Fig. 4. Connecting member 62 is inserted into support 51, and the lower end of connecting member 62 comes into contact with the upper end of connecting portion 38 shown in Fig. 9. Connecting member 63 is inserted into support 53, and the lower end of connecting member 63 comes into contact with the upper end of connecting portion 17 shown in Fig. 4. Connecting member 64 is inserted into support 54, and the lower end of connecting member 64 comes into contact with the upper end of connecting portion 37 shown in Fig. 9.

[0057] Also, the first stand frame 14A is placed on the first stand frame 14, and the first stand frame 14B is placed on the first stand frame 14A. The connecting member 61 is inserted into the support column 50 of the first stand frame 14A and into the support column 50 of the first stand frame 14B. As shown in FIG. 12, the upper end of the connecting member 61 is exposed upward from the support column 50 of the first stand frame 14B. Furthermore, the connecting member 62 is inserted into the support column 51 of the first stand frame 14A and into the support column 51 of the first stand frame 14B. As shown in FIG. 12, the upper end of the connecting member 62 is exposed upward from the support column 51 of the first stand frame 14B.

[0058] Note that before the first stand frame 14B is placed on the first stand frame 14A, an object is placed on the support base 52 of the first stand frame 14A and the support base 55 of the second stand frame 15A. After that, the second stand frame 15B is placed on the second stand frame 15A. Furthermore, the object is placed on the support base 52 of the first stand frame 14B and the support base 55 of the second stand frame 15B.

[0059] In an application example of the folding cart 10, the first stand frames 14, 14A, 14B can be stacked in three tiers, and the second stand frames 15, 15A, 15B can be stacked in three tiers. This increases the amount of objects that can be loaded within the same occupied area when viewed from directly above the folding cart 10. This makes it possible to prevent the occupied area of ​​the folding cart 10 from increasing when viewed from directly above the folding cart 10.

[0060] 13 and 14 show an example of the configuration of a storage container 65 that supports three first stand frames 14. The material of the storage container 65 is metal or synthetic resin. The metal is, for example, aluminum, steel, etc. The storage container 65 has a base 66, side plates 67, 68, and support pins 69, 70, 71, 72. The base 66 is plate-shaped, and the side plates 67, 68 protrude from the edges of the base 66. The side plates 67, 68 are arranged at intervals. The support pins 69, 70, 71, 72 are provided between the side plates 67 and 68. The support pins 69, 70, 71, 72 protrude from the surface of the base 66.

[0061] The storage container 65 can support three first stand frames 14 stacked on top of each other. For example, the support pin 71 is inserted into the support column 50 of the first stand frame 14, and the support pin 69 is inserted into the support column 51 of the first stand frame 14. The support base 52 is placed on the base 66. The first stand frame 14A is placed on the first stand frame 14. Specifically, the support base 52 of the first stand frame 14A is placed on the support columns 50 and 51 of the first stand frame 14. Furthermore, the support pin 72 is inserted into the support column 50 of the first stand frame 14B, and the support pin 70 is inserted into the support column 51 of the first stand frame 14B. The support base 52 of the first stand frame 14B is placed on the support columns 50 and 51 of the first stand frame 14A. The storage container 65 can also support three second stand frames 15 in a stacked state.

[0062] (supplementary explanation) An example of the technical meaning of the matters described in this embodiment is as follows. The folding cart 10 is an example of a folding cart. The first leg 11 is an example of a first leg. The second leg 12 is an example of a second leg. The base link 13 is an example of a connecting member. The first stand frame 14 and the second stand frame 15 are each an example of a distance fixing member. The first stand frame 14 and the second stand frame 15 are each an example of an object support member and an auxiliary object support member. In addition, the first stand frame 14 and the second stand frame 15 serve both as a distance fixing member and an object support member.

[0063] The connecting portions 17 and 18 are an example of a first connecting portion. The connecting portions 37 and 38 are an example of a second connecting portion. The pillars 50 and 53 are an example of a first pillar. The pillars 51 and 54 are an example of a second pillar. The support bases 52 and 55 are an example of a support base. The fixed handle 47 is an example of an auxiliary fixing member. The connecting members 61 and 63 are an example of a first connecting member. The connecting members 62 and 64 are an example of a second connecting member. The casters 19 and 39 are an example of a caster. The storage container 65 is an example of a storage container. The mounting seat 20 is an example of a first mounting seat. The mounting seat 40 is an example of a second mounting seat. The regulating plate 24 is an example of a first regulating plate. The regulating plate 44 is an example of a second regulating plate.

[0064] This embodiment is not limited to those disclosed using the drawings, and various modifications are possible within the scope of the gist of the present invention. For example, the folding cart can be stacked with two tiers of first stand frames and two tiers of second stand frames. Also, instead of the square pipes, circular pipes may be used. Also, instead of the square pipes, solid square timber may be used. Furthermore, instead of the circular pipes, solid bar materials may be used. Also, the means for fixing the parts together may be either fixing by screws or fixing by welding. [Industrial Applicability]

[0065] The present disclosure can be used as a foldable dolly that can be folded and unfolded. [Explanation of symbols]

[0066] REFERENCE SIGNS LIST 10...foldable trolley, 11...first leg, 12...second leg, 13...base link, 14...first stand frame, 15...second stand frame, 17,18,37,38...connecting portion, 19,39...caster, 20,40...mounting seat, 24,44...regulating plate, 47...fixed handle, 50,51,53,54...support, 52,55...support base, 61,62,63,64...connecting member, 65...storage container

Claims

1. A folding cart that can be folded and unfolded, A first leg and a second leg that are grounded to a place of use; a connecting member provided between the first leg portion and the second leg portion and connecting the first leg portion and the second leg portion so that the first leg portion and the second leg portion can approach and move away from each other in a first direction; a distance fixing member that is attachable to and detachable from the first leg and the second leg, and that is attached to the first leg and the second leg to fix a distance between the first leg and the second leg along the first direction; an object support member that is attachable to and detachable from the first leg and the second leg and that is attached to the first leg and the second leg to support an object; A folding trolley having the above structure.

2. The folding trolley according to claim 1, A first connecting portion protruding from the first leg portion in a second direction different from the first direction; a second connecting portion protruding from the second leg portion in the second direction; having The object support member is A first support that is attached to and detached from the first connecting portion; A second support pole that is attached to and detached from the second connecting portion; a support base that connects the first support and the second support and supports the object; A folding trolley having the above structure.

3. The folding trolley according to claim 1, The object support member also serves as the distance fixing member.

4. The folding trolley according to claim 1, The folding cart is further provided with an auxiliary fixing member that fixes the distance between the first leg and the second leg when the first leg and the second leg are in a folded state in which the first leg and the second leg are closest to each other along the first direction.

5. The folding cart according to claim 2, a first connecting member that is attached to and detached from the first support; a second connecting member that is attached to and detached from the second support; an auxiliary object support member that is attached to and detached from the first connecting member and the second connecting member; A folding dolly is further provided.

6. The folding cart according to claim 2, The first leg and the second leg each have a caster that is grounded to a place of use.

7. The folding trolley according to claim 6, The first leg portion, the second leg portion, and the connecting member constitute a unit that can be folded and unfolded, The caster provided on the first leg portion has a first mounting seat fixed to the first leg portion, The caster provided on the second leg portion has a second mounting seat fixed to the second leg portion, A first restricting plate fixed to the first leg portion; A second restricting plate fixed to the second leg portion; is further provided, A foldable trolley wherein, when the unit is in a folded state, the connecting member is sandwiched between the first and second regulating plates and the first and second mounting seats, so that the connecting member is positioned in the second direction relative to the first and second legs.

8. The folding cart according to claim 3, The foldable cart further includes a container for storing a plurality of the object support members.

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