JP2021028189A - Transport cart for book - Google Patents

Abstract

To provide a transport cart for book, capable of reducing a storage area and achieving high operability in transporting objects such as books.SOLUTION: A transport cart 10 for book, which is of substantially isosceles trapezoidal shape when viewed from a top and takes near side as a longer bottom and depth side as a shorter bottom, respectively, includes: trays 21 each set at a down grade toward depth side from front side; a pair of front side casters 32 provided at the lowest part on front side and a pair of depth side casters 31 provided at the lowest part on depth side. The front side casters 32 and the depth side casters 31 are provided to be rotatable around a vertical axis and a wheel diameter of each of the depth side casters 31 is larger than that of each of the front side casters 32.SELECTED DRAWING: Figure 1

Description

The present invention mainly relates to a carrying cart for books and the like used in a library.

In a library, when moving a book from a bookshelf to another bookshelf or when returning a returned book to the bookshelf, a book carrying cart is used to carry the book. As a matter of course, such a transport cart for books and the like may be used for transporting equipment and the like other than books.

In some libraries, the space between bookshelves is narrow, and in some cases, library users are standing in the path, so it is desirable that the carts for carrying books, etc. have good operability and can be moved easily. Therefore, by equipping the transport cart for books, etc. with casters that can rotate around the vertical axis, the wheels of the casters can be directed in the moving direction, and the structure is such that the casters can be freely moved in the front-back, left-right directions. There are many. In addition, it is necessary to be large enough to carry a certain amount of books at one time, but if the structure is such that too many books can be placed, it will not be possible to move in a narrow place or it will be too heavy and difficult to operate. Therefore, it is appropriate to use two or three shelves.

Further, since such a transport cart for books and the like is stored in a cart storage area or a corner of a room when not in use, it is desirable that the storage area be as small as possible.

Patent Document 1 discloses a library cart used by a library user. FIG. 8 is a perspective view of a library cart used by a library user, and FIG. 9 is a side view of the library cart stored. In this library cart 100, since the front part of the leg 104 with the caster 103 is connected by the base portion 105 so as to open slightly, a part of each leg 104 can be stored while being overlapped with each other. It is possible to reduce the area.

However, since the library cart 100 is intended to be used by individual library users, the amount of books that can be carried is as small as several. Further, since a large amount of books that affect the operability are not placed, the cart 100 can be moved in a desired direction with a small force on a flat place. However, since the wheel diameter of the caster 103 is small, when there is a step or an obstacle, a large force must be applied to overcome it.

JP 2001-158360

In view of the above circumstances, an object of the present invention is to provide a book or the like transport cart which can reduce the storage area and has excellent operability when transporting the books or the like.

In order to achieve the above object, the book transport cart of the present invention has a substantially isosceles trapezoidal shape from directly above, with the long bottom on the front side and the short bottom on the back side. A book transport cart, with a shelf board provided on a downward slope from the front side to the back side, a pair of front side casters provided at the bottom of the front side, and the bottom of the back side. It has a pair of back casters provided, and the front casters and the back casters are rotatable around the vertical axis, and the wheel diameter of the back casters is larger than the wheel diameter of the front casters. I will do it.

Here, it has two legs with a substantially isosceles trapezoidal shape and a three-sided support material that connects the shorter bottom, and the support material may support a book placed on a shelf board. The front casters may be provided at both ends of the longer bottom, and the back casters may be provided at the intermediate positions of the shorter bottom.

According to the book or the like transport cart of the present invention, a part of the cart can be overlapped at the time of storage, so that the storage area can be reduced. In addition, by making the wheel diameter of the caster larger on the back side than on the front side, the balance of the cart during movement can be maintained and the cart can be easily moved straight in any direction of front, back, left and right. Further, since the wheel diameter on the back side is large, it is easy to get over a step or the like, and it is possible to improve the operability during transportation.

It is a front view of the carrying cart such as a book of this invention. It is a top view of the carrying cart such as a book of this invention. It is a side view of the carrying cart such as a book of this invention. It is sectional drawing of the state which put the book on the shelf board. It is a top view explaining the movement of a carrying cart such as a book in the left-right direction. It is a side view explaining the situation of storing a transport cart such as a book. It is a top view explaining the situation of storing a transport cart such as a book. It is a perspective view of a library cart used by a library user. It is a side view which stored the library cart.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a front view of the book transport cart of the present invention, FIG. 2 is a plan view of the book transport cart of the present invention, and FIG. 3 is a side view of the book transport cart of the present invention.

This book transport cart 10 (hereinafter referred to as "cart") is a carrier used mainly in a library to move books from a bookshelf to another bookshelf and to return a large number of returned books to the bookshelf. However, of course, it may be used for transporting equipment other than books. If too many books are placed, the shelves will become too heavy and the operability will deteriorate. Therefore, the number of shelves 21 is basically 2 and up to 3 at most.

The cart 10 has a substantially isosceles trapezoidal shape when viewed from directly above. That is, the handle 23 of the cart 10 to be gripped during movement, the support material 22 for books, and the like are provided along the outer circumference of a substantially isosceles trapezoidal shape, and the shelf board 21 has a substantially isosceles trapezoidal surface for placing books. It has a trapezoidal shape. The long bottom of the substantially isosceles trapezoidal shape is the front side of the cart 10, and the short bottom is the back side.

The shelf board 21 is fixed to two columns 24 provided in the vertical direction, and is provided so as to have a downward slope from the front side to the back side of the cart 10. Further, two legs having a substantially isosceles trapezoidal shape viewed from directly above the cart 10 and a three-sided support member 22 connecting the shorter bottoms are fixed to the columns 24, and the respective shelf boards 21 It is installed in the sky. FIG. 4 is a cross-sectional view of a book placed on a shelf board. The support material 22 supports the edge and the back of the book 50 placed on the shelf board 21. That is, the book 50 is placed on the shelf board 21 from the front side of the cart 10 and supported by the support material 22 to prevent the books and the like from falling. The support member 22 is basically made of a steel pipe, but may be a member having a cross-sectional shape other than a circular shape. However, since it also has a role of maintaining the rigidity of the cart 10, it must be a member having excellent rigidity.

Since the shape of the cart 10 viewed from directly above is a substantially isosceles trapezoidal shape, when the books 50 are placed upright on the shelf board 21 and arranged side by side, a gap is formed between the books 50 on the front side. Therefore, the cart 10 of the present invention has an advantage that the book 50 can be easily held when the book 50 is placed or taken out.

At the bottom of the cart 10, a pair of front side casters 32 are provided on the front side, and a pair of back side casters 31 are provided on the back side. That is, a total of four casters are provided, and all of them are rotatable around the vertical axis, so that the wheels of the casters 31 and 32 face in the moving direction of the cart 10, and the cart 10 is placed on the floor surface. It can be freely moved back and forth and left and right. Further, a handrail-shaped handle 23 is provided on the uppermost portion of the cart 10 in the direction of two legs having a substantially isosceles trapezoidal shape, and the cart 10 can be easily operated by pushing the handle 23. The handle 23 is basically made of a steel pipe, but may be a member having another cross-sectional shape, and is fixed to the upper ends of the two columns 24, respectively.

The two front casters 32 are provided at both ends of the long bottom of the substantially isosceles trapezoid (near two acute angles), and the two back casters 31 are the shorter ones of the substantially isosceles trapezoid. It is assumed that it is provided at an intermediate position slightly inside from both ends of the bottom. That is, the distance L2 between the front side casters 32 is wider than the distance L1 between the back side casters 31.

The wheel diameter D of the rear caster 31 is larger than the wheel diameter d of the front caster 32. This is because the weight when a book or the like is placed is biased toward the back side of the cart 10, and the distances L1 and L2 between the casters are narrower on the back side caster 31, so the wheel diameters of the casters are all the same. Then, when the cart 10 is moved in the left-right direction when viewed from the front (the direction parallel to the two bottoms of the substantially isosceles trapezoidal shape), the cart 10 does not go straight and easily bends to the back side, so the moving direction is automatically set. This is to correct it. Note that FIG. 5 is a plan view illustrating the movement of the book or the like transport cart in the left-right direction.

In other words, if the wheel diameters of all casters are the same, when the cart 10 is moved in the left-right direction when viewed from the front, it is easy to bend to the back side, which puts an extra burden on the user. If the wheel diameter D of the side caster 31 is increased, the wheel rolling resistance of the rear caster 31 is reduced, and the balance can be maintained and the straightness can be maintained. That is, the operability can be improved.

Even if the wheel diameter of the rear caster 31 is increased in this way, there is no effect on the straightness when the cart 10 is moved to the rear side or the front side. Further, since the wheel diameter of the back side caster 31 is large, even if there is a step or an obstacle on the floor surface, by pushing the cart 10 to the back side, it is possible to easily overcome the step or the like with a small force. There is also.

Since such a cart 10 is stored in a cart storage area, a corner of a room, or the like when not in use, it must be structured so that it can be stored in a form that does not occupy as much space as possible. FIG. 6 is a side view illustrating a situation in which a transport cart for books and the like is stored. Further, FIG. 7 is a plan view illustrating a situation in which a transport cart for books and the like is stored. The existing cart 10 is represented by a broken line, and the next cart 10 can be stored so as to overlap the existing cart 10.

Specifically, the shape of the cart 10 viewed from directly above is a substantially isosceles trapezoidal shape, the support member 22 is not provided on the front side of the cart 10, and the shelf board 21 is from the front side to the back side. The existing structure is satisfied because it satisfies the structural conditions such as the downward slope toward the top and the back caster 31 being provided at an intermediate position slightly inward from both ends of the shorter bottom. The back side of the next cart 10 can be pushed into the front side of the cart 10, and a part of the two carts 10 can be overlapped with each other. That is, when the back side of the next cart 10 is thrust into the front side of the existing cart 10, the width of the front side is wider than that of the back side, and the front side and the back side of the shelf board 21 are A structure is realized in which the casters 31 on the front side of the existing cart 10 and the casters 32 on the back side of the next cart 10 do not collide with each other so as to be positioned vertically. With the cart 10 having such a structure, it is possible to store a plurality of carts 10 while overlapping each other in succession, so that the storage area can be reduced.

With the book transport cart 10 having the above structure, a part of the cart 10 can be overlapped at the time of storage, so that the storage area can be reduced and the cart 10 can be easily moved straight in any direction of front, back, left and right. Since it is a structure, it is possible to realize the effect that the operability at the time of movement can be improved.

10 Books, etc. Transport cart 21 Shelf board 22 Support material 23 Handle 24 Strut 31 Back side caster 32 Front side caster 50 Books

Claims (3)

A book transport cart with a substantially isosceles trapezoidal shape from directly above, with the long bottom on the front side and the short bottom on the back side.
A shelf board that is provided with a downward slope from the front side to the back side,
It has a pair of front casters provided at the bottom of the front side and a pair of back casters provided at the bottom of the back side.
A book or the like transport cart characterized in that the front casters and the back casters are rotatable around a vertical axis, and the wheel diameter of the back casters is larger than the wheel diameter of the front casters. A claim characterized by having two legs having a substantially isosceles trapezoidal shape and a three-sided support material connecting the shorter bottom, and the support material supports a book or the like placed on the shelf board. A transport cart for books, etc. according to item 1. The book or the like according to claim 1 or 2, wherein the front side casters are provided at both ends of the longer bottom, and the back side casters are provided at intermediate positions of the shorter bottom. Carrying cart.

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