JP7653699B2 - Trolley - Google Patents

Description

The present invention relates to a cart that can carry luggage.

A dolly has been disclosed in which the caster part can be fixed to the base without using bolts (see, for example, Patent Document 1). This dolly is equipped with a locking arm that prevents the seat plate of the caster part from falling off, a retainer that is inserted into the space above the locking arm, and a retainer locking part that fixes the retainer to the base. The dolly can fix the caster part to the base by inserting the retainer into the space above the locking arm that prevents the seat plate of the caster part from falling off and locking the retainer locking part to the base.

Patent No. 4325936

In the above conventional trolleys, when inserting the retainer, it is necessary to support the caster with one hand to prevent the caster from wobbling relative to the base, which makes the assembly process complicated. Also, when changing the mounting position of the caster, a major design change is required.
Therefore, an object of the present invention is to provide a trolley in which the caster parts can be easily attached and detached from the trolley body and the position of the caster parts can be flexibly changed.

The above problems are solved by the present invention. That is, the present invention (1) provides a trolley comprising a trolley body having a plurality of mounting parts including some mounting parts corresponding to corners;
A caster member having a seat plate portion and a caster portion;
a first adapter member having a first adapter part that engages with the seat plate portion from a first direction and a second adapter part that engages with the seat plate portion from a second direction different from the first direction, the first adapter member being detachably attached to any one of the plurality of attachment parts in a state in which the seat plate portion is sandwiched and held between the first adapter part and the second adapter part;
Equipped with.

The present invention (2) provides a cart according to the invention (1),
Some of the mounting portions correspond to positions offset from the corners.

The present invention (3) provides a cart according to the present invention (1) or (2),
The second adaptor part is of the same configuration as the first adaptor part.

The present invention (4) provides a cart according to any one of (1) to (3),
The second adaptor part is engagable with the first adaptor part.

The present invention (5) provides a cart according to the invention (4),
The first adapter part is
a first engagement portion protruding from a surface facing the second adaptor portion toward the second adaptor portion, and a second engagement portion recessed from the surface facing the second adaptor portion in a direction away from the second adaptor portion,
The second adapter part is
The connector includes a third engagement portion that protrudes from the surface facing the first adapter portion and is inserted into the second engagement portion so as to be engageable with the second engagement portion, and a fourth engagement portion that is recessed from the surface facing the first adapter portion and receives the first engagement portion so as to be engageable with the first engagement portion.

The present invention (6) provides a cart according to any one of (1) to (5),
Each of the plurality of mounting portions has a frame portion and a notch portion formed in the frame portion,
The first adapter member has a claw portion and is attached to the inside of the frame portion so that the claw portion engages with the notch portion.

The present invention (7) provides a cart according to any one of (1) to (6),
Each of the plurality of mounting portions has a protrusion protruding toward the first adapter member,
The first adapter member has a recess into which the protrusion can be fitted.

The present invention (8) provides a cart according to any one of (1) to (7),
The second adapter member has a third adapter part that engages with the seat plate portion from a first direction and a fourth adapter part that engages with the seat plate portion from a second direction different from the first direction, and the length in the thickness direction of the bogie body is different from that of the first adapter member, and the second adapter member is removably attached to any one of the multiple mounting parts with the seat plate portion sandwiched and held between the third adapter part and the fourth adapter part.

In addition, the cart of the present invention (9) is
A carriage body having a plurality of mounting portions including some mounting portions corresponding to the corners;
A caster member having a seat plate portion and a caster portion;
a third adapter member that engages with the seat plate portion from a direction intersecting the thickness direction of the carriage body, the third adapter member being detachably attached to any one of the plurality of attachment portions in a state where the third adapter member is engaged with the seat plate portion;
Equipped with
Each of the plurality of mounting portions has a frame portion,
The third adapter member is attached to the inside of the frame portion such that the frame portion prevents the third adapter member from being disengaged from the seat plate portion.

The present invention (10) provides a cart according to the invention (9),
Some of the mounting portions correspond to positions offset from the corners.

The present invention (11) provides a cart according to the present invention (9) or (10),
Each of the plurality of mounting portions has a notch formed in the frame portion,
The third adapter member has a claw portion and is attached to the inside of the frame portion so that the claw portion engages with the notch portion.

The present invention (12) provides a cart according to any one of (9) to (11),
Each of the plurality of mounting portions has a protrusion protruding toward the third adapter member,
The third adapter member has a recess into which the protrusion can be fitted.

The present invention provides a trolley in which the caster section can be easily attached and detached from the trolley body, and the position of the caster section can be flexibly changed.

FIG. 2 is a perspective view showing the bogie of the first embodiment. FIG. 2 is a perspective view showing the dolly shown in FIG. 1 from below. 2 is an enlarged bottom view of the dolly shown in FIG. 1 . FIG. 3 is an exploded perspective view showing a first adapter member (a first adapter portion, a second adapter portion) of the dolly shown in FIG. 2. FIG. 5 is a cross-sectional view taken along the line F5-F5 of the bogie shown in FIG. 3. 3 is an exploded perspective view showing the first adapter member detached from the mounting portion of the dolly shown in FIG. 2, with the first adapter member separated into a first adapter portion and a second adapter portion; FIG. FIG. 7 is an enlarged perspective view of a portion A of the carriage shown in FIG. 6 . FIG. 3 is a perspective view showing the first adapter member removed from the mounting portion of the dolly shown in FIG. 2 . FIG. 9 is an enlarged perspective view of a portion B of the carriage shown in FIG. 8 . FIG. 11 is a perspective view showing a cart in a second usage mode of the first embodiment. FIG. 11 is a perspective view showing a cart in a third usage mode of the first embodiment. FIG. 11 is a perspective view showing the bogie of the second embodiment from below. 13 is an exploded perspective view showing a second adapter member (third adapter portion, fourth adapter portion) of the dolly shown in FIG. 12. FIG. FIG. 11 is a perspective view showing the bogie of the third embodiment from below. FIG. 3 is a perspective view showing a third adapter member of the carriage shown in FIG. 2 . FIG. 16 is a front view showing the third adapter member shown in FIG. 15 . FIG. 15 is an exploded perspective view showing a state in which the third adapter member, which has been detached from the mounting portion of the dolly shown in FIG. 14, has been detached from the caster member. FIG. 15 is an exploded perspective view showing the third adapter member detached from the mounting portion of the trolley shown in FIG. 14 and integrated with the caster members.

Hereinafter, an embodiment of a dolly of the present invention will be described with reference to Figures 1 to 18. The dolly of the present invention is used, for example, for transporting goods (commodities) from a logistics vehicle to a store's back yard, or for stocking goods from the store's back yard to display shelves.
[First embodiment]

The trolley 11 of the first embodiment will be described with reference to Figures 1 to 11. As shown in Figures 1 and 2, the trolley 11 comprises a flat trolley body 12, a plurality of caster members 13 provided on the underside of the trolley body 12, and a plurality of first adapter members 14 interposed between the trolley body 12 and the plurality of caster members 13.

The cart body 12 is integrally molded from a synthetic resin material using a method such as injection molding. The cart body 12 has a number of mounting parts 15 for mounting the first adapter member 14, and a pair of finger hooks 16 for gripping and lifting the cart 11. The multiple mounting parts 15 include several mounting parts 15A that correspond to the corners 17 of the cart body 12, and several mounting parts 15B that are provided at positions away from the corners 17 of the cart body 12. The mounting parts 15 have the same shape. The total number of mounting parts 15 is arbitrary, and may be seven as in this embodiment, six or less, or eight or more.

As shown in Figures 2 and 8, each mounting section 15 has a frame section 21 that protrudes in a rectangular frame shape, a notch section 22 that is provided to cut out a square shape at the base of the frame section 21, and a protrusion section 23 that protrudes inside the frame section 21 in a rectangular frame shape that is smaller than the frame section. The protrusion section 23 is provided in the center of the frame section 21. The notch sections 22 are provided in pairs on both sides of the protrusion section 23.

As shown in FIG. 5, the caster members 13 are made of commercially available casters. Each caster member 13 has a caster portion 24 including a wheel and a flat seat portion 25 attached to the caster portion 24.

As shown in FIG. 4, the first adapter member 14 is composed of two parts. That is, the first adapter member 14 has a first adapter part 26 and a second adapter part 27 formed in the same shape as the first adapter part 26.

The first adapter part 26 is integrally molded from a synthetic resin material, for example, using a technique such as injection molding. As shown in FIG. 4, FIG. 5, and FIG. 7, the first adaptor part 26 has a first adaptor body 31, a surface (first opposing surface 32) provided on the first adaptor body 31 facing the second adaptor part 27, a first holding part 33 provided on the first adaptor body 31 and shaped like a bag so that the seat plate part 25 can be inserted and held, a first flange part 34 provided on the outside of the first holding part 33, a first engagement part 35 protruding from the first opposing surface 32 of the first adaptor body 31 toward the second adaptor part 27, a second engagement part 36 recessed from the first opposing surface 32 of the first adaptor body 31 in a direction away from the second adaptor part 27, a first claw part 37 provided to protrude outward from the first adaptor body 31, and a first recess 38 provided to be recessed into the first adaptor body 31 on the side opposite to the side on which the first holding part 33 is provided.

The first retaining portion 33 is recessed to follow the shape of one half of the seat plate portion 25, and can receive half of the seat plate portion 25 of the caster member 13. As shown in FIG. 5, the first flange portion 34 can cover the upper side of the seat plate portion 25 inserted into the first retaining portion 33, and prevents the caster member 13 from falling off the first retaining portion 33 in the thickness direction T of the trolley body 12.

The second adapter part 27 is integrally molded from a synthetic resin material using a technique such as injection molding, for example, using the same mold as that used to mold (injection mold) the first adapter part 26. As shown in FIG. 4, FIG. 5, and FIG. 7, the second adaptor part 27 has a second adaptor body 41, a surface (second opposing surface 42) provided on the second adaptor body 41 facing the first adaptor part 26, a second holding part 43 provided on the second adaptor body 41 and having a bag shape so that the seat plate part 25 can be inserted and held, a second flange part 44 provided on the outside of the second holding part 43, a third engagement part 45 protruding from the second opposing surface 42 of the second adaptor body 41 toward the first adaptor part 26, a fourth engagement part 46 recessed from the second opposing surface 42 of the second adaptor body 41 in a direction away from the first adaptor part 26, a second claw part 47 provided to protrude outward from the second adaptor body 41, and a second recess part 48 provided to be recessed in the second adaptor body 41 on the side opposite to the side on which the second holding part 43 is provided.

The second retaining portion 43 is recessed to follow the shape of one half of the seat plate portion 25, and can receive half of the seat plate portion 25 of the caster member 13. As shown in FIG. 5, the second flange portion 44 covers the upper side of the seat plate portion 25 inserted into the second retaining portion 43, and can prevent the caster member 13 from falling off the second retaining portion 43 in the thickness direction T of the trolley body 12.

The first engagement portion 35 of the first adaptor part 27 and the third engagement portion 45 of the second adaptor part 27 each have a plurality of ribs 49.

The third engaging portion 45 can be inserted into the second engaging portion 36 and engaged with the second engaging portion 36. The fourth engaging portion 46 can receive the first engaging portion 35 and engage with the first engaging portion 35. The multiple ribs 49 of the first engaging portion 35 exert a frictional force against the fourth engaging portion 46 when engaged with the fourth engaging portion 46, thereby joining the first adaptor portion 27 and the second adaptor portion 27 with appropriate strength. Similarly, the multiple ribs 49 of the third engaging portion 45 exert a frictional force against the second engaging portion 36 when engaged with the second engaging portion 36, thereby joining the first adaptor portion 27 and the second adaptor portion 27 with appropriate strength. The first adaptor portion 26 and the second adaptor portion 27 can be integrated by the engagement of the third engaging portion 45 and the second engaging portion 36 and the engagement of the fourth engaging portion 46 and the first engaging portion 35 to form the first adaptor member 14.

As shown in FIG. 5, when the first adapter part 26 and the second adapter part 27 are integrated, the first recess 38 and the second recess 48 form a single large recess 51. When the first adapter member 14 is attached to the mounting part 15, the protrusion 23 of the mounting part 15 fits snugly inside the recess 51.

Next, the assembly method of the trolley 11 of this embodiment will be described with reference to Figures 2 and 5 to 9.

6 and 7, the first adapter part 26 is engaged with the seat plate part 25 of the caster member 13 from the first direction D1 (horizontal direction, direction intersecting with the thickness direction T of the cart body 12). At that time, the seat plate part 25 is inserted into the inside of the first retaining part 33 of the first adapter part 26 to engage the first adapter part 26 with the caster member 13. Similarly, the second adapter part 27 is engaged with the seat plate part 25 of the caster member 13 from a direction different from the first direction D1, more specifically, from a second direction D2 (horizontal direction, direction intersecting with the thickness direction T of the cart body 12) that is the opposite direction to the first direction D1. At that time, the seat plate part 25 is inserted into the inside of the second retaining part 43 of the second adapter part 27 to engage the second adapter part 27 with the caster member 13. At this time, the first engaging portion 35 of the first adaptor part 26 is inserted into the fourth engaging portion 46 of the second adaptor part 27, and the third engaging portion 45 of the second adaptor part 27 is inserted into the second engaging portion 36 of the second adaptor part 27. As a result, as shown in Figures 8 and 9, the first adaptor part 26 and the second adaptor part 27 are integrated into one first adaptor member 14, and the seat plate part 25 can be held inside the first holding portion 33 and the second holding portion 43. The caster member 13 is sandwiched and held between the first adaptor part 26 and the second adaptor part 27. This completes the fixation of the caster member 13 and the first adaptor member 14 (the first adaptor part 26 and the second adaptor part 27).

Then, the first adapter member 14 integrated with the caster member 13 is inserted inside the frame portion 21 of the mounting portion 15. At this time, as shown in FIG. 5, the convex portion 23 of the mounting portion 15 is fitted tightly into the concave portion 51 of the first adapter member 14. Furthermore, the first claw portion 37 and the second claw portion 47 are fitted into the pair of cutout portions 22 of the mounting portion 15, completing the attachment of the first adapter member 14 to the mounting portion 15.

When removing the caster member 13 from the mounting portion 15, the first claw portion 37 and the second claw portion 47 are pushed in with the fingers to detach them from the pair of notches 22. Furthermore, the caster member 13 can be easily separated from the trolley body 12 by pulling out the first adapter member 14 from the mounting portion 15.

The operation of the trolley 11 of this embodiment will be described. In the trolley 11 of this embodiment, multiple mounting parts 15 (15A, 15B) are provided at positions corresponding to corners 17 of the trolley body 12 and at positions away from the corners 17. This allows the user to place the caster members 13 in the desired position depending on the mode of use. In addition, since the structure is such that the convex parts 23 of the mounting parts 15 fit snugly into the concave parts 51 of the first adapter member 14, even when a large impact is applied to the caster members 13, such as when going over a step, the first adapter member 14 does not rotate within the mounting parts 15, causing the caster members 13 to fall off the mounting parts 15.

When the dolly 11 is used to transport general items, the user can install the caster members 13 on the mounting portion 15 located at the corner portion 17 via the first adapter member 14, as shown in FIG. 2. This allows the most general dolly 11 to be constructed with a minimum number of caster members 13.

When the cart 11 is used to transport slightly heavy items, the cart 11 in the second usage mode can be adopted. That is, as shown in FIG. 10, the user can install the caster members 13 on the mounting part 15A located at the corner 17 via the first adapter member 14 and on the mounting part 15B located at the center of the cart body 12.

When the cart 11 is used to transport heavy items, the cart 11 in the third usage mode can be adopted. That is, as shown in FIG. 11, the user can install the caster members 13 on the mounting part 15A located at the corner 17 and on the mounting part 15B located between the corners 17 via the first adapter member 14.

In this way, with the cart 11 of this embodiment, the user can place the caster members 13 in a desired position according to the usage mode and preference. In addition, the position of the caster members 13 once installed can be easily changed.

According to this embodiment, the following can be said. The trolley 11 includes a trolley body 12 having a plurality of mounting parts 15 including some mounting parts 15A corresponding to the corners 17, a caster member 13 having a seat plate part 25 and a caster part 24, and a first adapter member 14 having a first adapter part 26 that engages with the seat plate part 25 from a first direction D1 and a second adapter part 27 that engages with the seat plate part 25 from a second direction D2 different from the first direction D1, and the first adapter member 14 is detachably attached to any one of the plurality of mounting parts 15 while holding the seat plate part 25 between the first adapter part 26 and the second adapter part 27.

According to this configuration, the first adapter member 14 can be attached to the mounting portion 15 of the cart body 12 while the caster member 13 is sandwiched and held between the first adapter part 26 and the second adapter part 27. Therefore, the caster member 13 will not fall off the first adapter member 14 during the installation work of the caster member 13. Therefore, the worker can attach the first adapter member 14 to the mounting portion 15 without supporting the caster member 13. This can improve the efficiency of the assembly work performed by the user.

Some of the multiple mounting parts 15 correspond to positions away from the corners 17. With this configuration, the first adapter member 14 can be mounted at any position among the multiple mounting parts 15A corresponding to the corners 17 and the multiple mounting parts 15B at positions away from the corners 17. This allows the user to mount the caster members 13 at a desired position depending on the application. In this way, since the caster members 13 can be placed at a position desired by the user, the manufacturer of the trolley 11 does not need to make design changes to change the mounting positions of the caster parts 24 according to the needs of the user.

The second adaptor part 27 has the same shape as the first adaptor part 26. With this configuration, the mold for molding the first adaptor part 26 and the mold for molding the second adaptor part 27 can be the same. This reduces the cost of the mold and the manufacturing cost of the trolley 11.

The second adaptor part 27 engages with the first adaptor part 26. With this configuration, the first adaptor part 26 and the second adaptor part 27 can be integrated without being separated, reducing the risk of the caster member 13 falling off the trolley body 12.

The first adaptor part 26 includes a first engagement part 35 that protrudes from the surface facing the second adaptor part 27 toward the second adaptor part 27, and a second engagement part 36 that is recessed from the surface facing the second adaptor part 27 in a direction away from the second adaptor part 27. The second adaptor part 27 includes a third engagement part 45 that protrudes from the surface facing the first adaptor part 26 and is inserted into the second engagement part 36 to be able to engage with the second engagement part 36, and a fourth engagement part 46 that is recessed from the surface facing the first adaptor part 26 and receives the first engagement part 35 to be able to engage with the first engagement part 35.

This configuration allows the first adaptor part 26 and the second adaptor part 27 to be integrated with a simple structure with the seat plate part 25 sandwiched between them. In addition, the above configuration does not prevent the first adaptor part 26 and the second adaptor part 27 from being of the same shape.

Each of the multiple mounting parts 15 has a frame part 21 and a notch part 22 formed in the frame part 21, and the first adapter member 14 has a claw part and is mounted on the inside of the frame part 21 so that the claw part engages with the notch part 22. With this configuration, the mounting parts 15 and the first adapter member 14 provided on the trolley body 12 side can be realized with an extremely simple structure.

Each of the multiple mounting portions 15 has a protrusion 23 that protrudes toward the first adapter member 14, and the first adapter member 14 has a recess 51 into which the protrusion 23 can be fitted.

With this configuration, when the caster member 13 receives an impact due to a step or the like while the cart 11 is running, the frame portion 21 is deflected, and the first adapter member 14 is prevented from rotating within the frame portion 21 of the mounting portion 15. This effectively prevents the claw portion of the first adapter member 14 from being damaged and the caster member 13 from falling off the cart 11.

In the following embodiment, differences from the first embodiment will be mainly described, and illustrations or descriptions of parts common to the first embodiment will be omitted.
[Second embodiment]

The second embodiment of the cart 11 will be described with reference to Figures 12 and 13. The cart 11 of this embodiment differs from the first embodiment in that a second adapter member 52 is used instead of the first adapter member 14 to fix the caster member 13, but the other parts are the same.

The third adaptor part 53 and the fourth adaptor part 54 constituting the second adaptor member 52 have a different length in the thickness direction T of the cart body 12 (they are longer) than the first adaptor part 26 and the second adaptor part 27 of the first embodiment, but the other parts are the same. For this reason, in this embodiment, the third adaptor part 53 and the fourth adaptor part 54 are given the same reference numerals as the first adaptor part 26 and the second adaptor part 27 of the first embodiment, and the description of each part is omitted. Each of the third adaptor part 53 and the fourth adaptor part 54 is integrally molded from a synthetic resin material using a method such as injection molding using the same mold, for example.

The operation of the trolley 11 of this embodiment will be described. The attachment and detachment of the caster member 13 to the trolley body 12 using the second adapter member 52 is similar to the attachment and detachment of the caster member 13 to the trolley body 12 using the first adapter member 14 described in the first embodiment.

In this embodiment, the length of the second adapter member 52 in the thickness direction T of the cart body 12 is greater than that of the first adapter member 14, so that the lower end of the second adapter member 52 attached to the mounting part 15 protrudes downward from the frame part 21 as shown in FIG. 12. Therefore, in this embodiment, the installation height of the cart body 12 can be made higher than that of the first embodiment. Therefore, for example, in cases where there are many steps to overcome on passages or sidewalks leading from a distribution vehicle to a store, a cart 11 can be configured that can prevent the bottom of the cart body 12 from getting caught on the steps. In addition, since the structure is such that the convex part 23 of the mounting part 15 fits snugly into the concave part 51 of the second adapter member 52, even when a large impact is applied to the caster member 13 when overcoming a step, the second adapter member 52 rotates within the mounting part 15, and the caster member 13 does not fall off the mounting part 15.

The arrangement of the caster members 13 in this embodiment is just one example, and it is of course also possible to arrange the caster members 13 at the corners 17 and in the center of the trolley body 12 as in FIG. 10 of the first embodiment, or at the corners 17 and between the corners 17 of the trolley body 12 as in FIG. 11 of the first embodiment.

According to this embodiment, the following can be said. The trolley 11 is a second adapter member 52 having a third adapter part 53 that engages with the seat plate part 25 from a first direction D1, and a fourth adapter part 54 that engages with the seat plate part 25 from a second direction D2 different from the first direction D1 and engages with the third adapter part 53, the second adapter member 52 having a length in the thickness direction T of the trolley body 12 different from that of the first adapter member 14, and the second adapter member 52 is removably attached to any one of the multiple attachment parts 15 in a state in which the seat plate part 25 is sandwiched and held between the third adapter part 53 and the fourth adapter part 54.

According to this configuration, by adopting the second adapter member 52, which is longer than the first adapter member 14, instead of the first adapter member 14, the installation height of the dolly body 12 can be easily increased. This makes it possible to realize a dolly 11 that is particularly useful when the dolly 11 is used in places where it is often necessary to climb over steps or for other purposes.
[Third embodiment]

The third embodiment of the cart 11 will be described with reference to Figures 14 to 18. The cart 11 of this embodiment differs from the first embodiment in that a third adapter member 61 is used instead of the first adapter member 14 to fix the caster member 13, but the other parts are the same.

The third adapter member 61 is not divided into two parts, unlike the first adapter member 14 of the first embodiment. The third adapter member 61 is integrally molded from a synthetic resin material using a method such as injection molding.

As shown in Figures 15 and 16, the third adapter member 61 has a third adapter body 62, a bag-shaped third holding portion 63 provided on the third adapter body 62 so that the seat plate portion 25 can be inserted and held, a pair of third claw portions 64 provided so as to protrude outward in two directions from the third adapter body 62, and a recess 51 provided so as to be recessed into the third adapter body 62 on the side opposite to the side on which the first holding portion 33 is provided.

The third retaining portion 63 is recessed to follow the shape of the seat plate portion 25, and can receive the entire seat plate portion 25 of the caster member 13. The third flange portion 65 of the third retaining portion 63 fits over the upper side of the seat plate portion 25, and can prevent the caster member 13 from falling off the third retaining portion 63 in the thickness direction T of the trolley body 12. When the first adapter member 14 is attached to the mounting portion 15, the protrusion portion 23 of the mounting portion 15 is fitted inside the recess portion 51.

Next, the assembly method of the trolley 11 of this embodiment will be described with reference to Figures 14, 17, and 18.

First, as shown in FIG. 17, the third adaptor part 53 is engaged with the seat plate part 25 of the caster member 13 from the first direction D1 (horizontal direction, direction intersecting with the thickness direction T). At that time, the seat plate part 25 is inserted inside the third retaining part 63 of the third adaptor part 53, and the third adaptor part 61 is engaged with the caster member 13. This completes the fixation of the caster member 13 and the third adaptor part 61.

Next, as shown in FIG. 18, the third adapter member 61 integrated with the caster member 13 is inserted inside the frame portion 21 of the mounting portion 15. At this time, the convex portion 23 of the mounting portion 15 is fitted snugly into the concave portion 51 of the third adapter member 61. Furthermore, the pair of third claw portions 64 are fitted into the pair of notches 22 of the mounting portion 15, completing the mounting of the third adapter member 61 to the mounting portion 15. At this time, the frame portion 21 acts as a retainer, preventing the seat plate portion 25 of the caster member 13 from coming off laterally from the third retaining portion 63.

When removing the caster members 13 from the mounting portion 15, the pair of third claws 64 are pushed in with the fingers to release them from the pair of notches 22. Furthermore, the caster members 13 can be easily separated from the trolley body 12 by pulling out the third adapter member 61 from the mounting portion 15.

The operation of the trolley 11 of this embodiment will be described. According to this embodiment, there is no need to engage the first adapter part 26 and the second adapter part 27 as in the first embodiment, so the number of parts can be reduced and the work process when the user assembles the trolley 11 can be simplified. In addition, since the structure is such that the convex part 23 of the mounting part 15 fits snugly into the concave part 51 of the third adapter member 61, even when a large impact is applied to the caster member 13, such as when going over a step, the third adapter member 61 rotates within the mounting part 15, and there is no problem in that the caster member 13 falls off the mounting part 15.

The arrangement of the caster members 13 in this embodiment is just one example, and it is of course also possible to arrange the caster members 13 in the center of the trolley body 12 as in FIG. 10 of the first embodiment, or to arrange the caster members 13 between the corners 17 of the trolley body 12 as in FIG. 11 of the first embodiment.

According to this embodiment, the following can be said. The trolley 11 includes a trolley body 12 having a plurality of mounting portions 15 corresponding to the corners 17, a caster member 13 having a seat plate portion 25 and a caster portion 24, and a third adapter member 61 that engages with the seat plate portion 25 from a direction intersecting the thickness direction T of the trolley body 12 and is removably attached to any one of the plurality of mounting portions 15 while engaged with the seat plate portion 25, each of the plurality of mounting portions 15 having a frame portion 21, and the third adapter member 61 is attached to the inside of the frame portion 21 so that the frame portion 21 restricts the release of the engagement with the seat plate portion 25.

With this configuration, the third adapter member 61 can be constructed from a single part. This reduces the cost of the mold for manufacturing the third adapter member 61, and reduces the labor required to assemble the cart 11, resulting in a user-friendly cart 11.

The above-described embodiment can be implemented with various substitutions and modifications. That is, in the above-described embodiment, the first adapter part 26 and the second adapter part 27 are adapted to engage with each other, but they do not have to engage with each other. Similarly, the third adapter part 53 and the fourth adapter part 54 are adapted to engage with each other, but they do not have to engage with each other. Also, in the above-described embodiment, the first to third adapter members 14, 52, 61 are provided with the first claw part 37, the second claw part 47, and the third claw part 64, and the trolley body 12 is provided with the notch part 22, but this arrangement is not limited to this. For example, it is also possible to provide through holes in the first to third adapter members 14, 52, 61, and provide the trolley body 12 with claw parts corresponding to the first claw part 37, the second claw part 47, and the third claw part 64, and to fix the first to third adapter members 14, 52, 61 to the trolley body 12 by engaging the claw parts with the through holes. Furthermore, the shapes of the frame 21 and the first to third adapter members 14, 52, and 61 are not limited to a rectangle, but may be, for example, a circle or a polygon other than a rectangle. In addition, the invention can be realized by appropriately combining the above embodiments.

11 Dolly 12 Dolly body 13 Caster member 14 First adapter member 15 Mounting portion 17 Corner portion 21 Frame portion 22 Notch portion 23 Convex portion 24 Caster portion 25 Seat plate portion 26 First adapter portion 27 Second adapter portion 35 First engagement portion 36 Second engagement portion 37 First claw portion 45 Third engagement portion 46 Fourth engagement portion 47 Second claw portion 48 Second recess 51 Recess 52 Second adapter member 53 Third adapter portion 54 Fourth adapter portion 61 Third adapter member 64 Third claw portion

Claims (11)

A carriage body having a plurality of mounting portions including some mounting portions corresponding to the corners;
A rectangular frame portion provided on each of the plurality of mounting portions;
A caster member having a seat plate portion and a caster portion;
a first adapter member having a first adapter part that engages with the seat plate portion from a first direction and a second adapter part that engages with the seat plate portion from a second direction different from the first direction, the first adapter member being rectangular and removably attached within the frame part of any one of the plurality of mounting parts in a state in which the seat plate portion is sandwiched and held between the first adapter part and the second adapter part ;
Equipped with
Each of the plurality of mounting portions has a rectangular protrusion protruding toward the first adapter member on the inside of the frame portion,
The first adapter member is a cart having a rectangular recess into which the protrusion can be snugly fitted . The cart according to claim 1, wherein some of the multiple mounting parts correspond to positions that are off the corners. The cart according to claim 1 or 2, wherein the second adapter part has the same shape as the first adapter part. The trolley according to any one of claims 1 to 3, wherein the second adapter part is engageable with the first adapter part. The first adapter part is
a first engagement portion protruding from a surface facing the second adaptor portion toward the second adaptor portion, and a second engagement portion recessed from the surface facing the second adaptor portion in a direction away from the second adaptor portion,
The second adapter part is
5. The trolley described in claim 4, further comprising: a third engagement portion protruding from a surface facing the first adapter portion and being inserted into the second engagement portion so as to be engageable with the second engagement portion; and a fourth engagement portion recessed from a surface facing the first adapter portion and receiving the first engagement portion so as to be engageable with the first engagement portion. Each of the plurality of mounting portions has a frame portion and a notch portion formed in the frame portion,
The bogie according to any one of claims 1 to 5, wherein the first adapter member has a claw portion and is attached to the inside of the frame portion so that the claw portion engages with the notch portion. A trolley as described in any one of claims 1 to 6, comprising a second adapter member having a third adapter portion that engages with the seat plate portion from a first direction and a fourth adapter portion that engages with the seat plate portion from a second direction different from the first direction, wherein the second adapter member has a length in the thickness direction of the trolley body different from that of the first adapter member, and the second adapter member is removably attached to any one of the multiple mounting portions with the seat plate portion sandwiched and held between the third adapter portion and the fourth adapter portion. A carriage body having a plurality of mounting portions including some mounting portions corresponding to the corners;
A rectangular frame portion provided on each of the plurality of mounting portions;
A caster member having a seat plate portion and a caster portion;
a third adapter member that engages with the seat plate portion from a direction intersecting the thickness direction of the carriage body, the third adapter member being rectangular and removably mounted within the frame portion of any one of the plurality of mounting portions in a state where the third adapter member is engaged with the seat plate portion;
Equipped with
The third adapter member is a bogie that is attached to the inside of the frame portion such that the frame portion prevents the third adapter member from disengaging from the seat plate portion. The dolly of claim 8 , wherein some of the plurality of mounting portions correspond to positions offset from the corner portions. Each of the plurality of mounting portions has a notch formed in the frame portion,
The bogie according to claim 8 or 9 , wherein the third adapter member has a claw portion and is attached to the inside of the frame portion so that the claw portion is engaged with the notch portion. Each of the plurality of mounting portions has a protrusion protruding toward the third adapter member,
The bogie according to any one of claims 8 to 10 , wherein the third adapter member has a recess into which the protrusion can be fitted.

Images