JP2015083410A - Book truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a book truck capable of solving all problems, that a conventional book truck cannot be assembled by oneself, a handle position is at an upper end of a left and right frame and resulting in operation ability, and bumper performance is not sufficient.SOLUTION: A frame which is substantially quadrangle shape in plan view is formed and is in a horizontal posture. On the frame, a shelf-like part is disposed and the frame has wheels.

Description

The present invention relates to a book track for transporting books mainly used in a library, and more particularly to a book track with a devised frame structure.

  A known book track has a shelf-like basic structure in which left and right frame frames or panel frames are joined together by, for example, two or three shelf members with back plates or shelf members without back plates. Most of the basic structures are provided with a swingable traveling wheel at the bottom four corners of the basic structure and a traveling handle provided on the upper part of the left and right frames.

  Since the book track has a so-called panel structure in which the left and right frames are connected by shelf members and a traveling track is provided at the bottom four corners to form a book track that has a substantially shelf-shaped basic shape, Insufficient strength, there is a possibility that the screws connecting the left and right frames and the shelf members will be loosened, and there is a problem that the assembly cannot be done by one person.

  In other words, this type of book truck is packed in a state in which its component parts are disassembled for space efficiency during transportation and storage, and delivered to the library or school in this packing state. Alternatively, the purchaser must unpack the package, screw the shelf members to the left and right frames, and install casters or traveling wheels to assemble the book truck. For example, it is extremely difficult or practically impossible for one person to hold the left and right side plates) in a standing position and sandwich the shelf members between the frames. This is because the screwing of the shelf plate member is insufficient or easy to loosen.

In addition, since the book track has a basic structure in which the left and right frames are coupled by a shelf member, a traveling (or driving) handle forms one of the left and right frames and is one of the frame materials present at the upper end thereof. Most are formed by the portions. However, when the handle is at the highest position of the book track, the running performance and area of the track have a problem in operability.
In other words, when the book track is large and tall, it is difficult to perform pushing, pulling and turning operations with a handle at a high position, which is not preferable from an ergonomic standpoint. is there.

Furthermore, in the basic structure of the book track as described above, the left and right frames, the shelf members, or the traveling wheels do not have a bumper function, so a part of the outer surface of the left and right frames or the mounting shaft of the traveling wheels is called a bumper. Insufficient cushioning members are provided, but such cushioning members are not sufficient for book trucks that are loaded with documents and have increased in total weight.
The above-mentioned problems are the same in the book truck-shaped transport vehicle disclosed in Patent Documents 1 to 3 exemplified below.

JP 2009-227042 A Japanese Patent No. 45405050 JP-A-9-207785

Therefore, in the present invention, all of the difficulties of conventional book trucks that cannot be assembled by one person, that the handle position is at the upper end of the left and right frames and that operability is difficult, and that the bumper performance is insufficient. The issue is to provide a book track that has been resolved.

  The configuration of the book track of the present invention, which has been made for the purpose of solving the above-mentioned problems, forms a substantially rectangular frame when viewed from above, and arranges a shelf-like part on the horizontal frame, The present invention is characterized in that traveling wheels are provided on the frame.

  In the present invention, the left and right side plates can be erected and fixed independently on the frame so that the shelf-like portion can be assembled by one person. Therefore, mounting members (or mounting brackets) to which the left and right side plates are fastened are provided at almost four corners of the frame. The left and right side plates are preferably formed of a wood-based panel body, but may be a metal or plastic panel body. This is because if the left and right side plates are formed of a panel body, the degree of freedom in selecting the mounting position of the handle is high, and the structure for fixing the shelf-like portion to the frame becomes simple. In the present invention, the left and right side plates do not have to be panel bodies as long as they are supported by the mounting member provided on a horizontal frame and can be fixed independently on the frame.

  In the present invention, the traveling wheels provided on the lower surface side of the frame may be provided on the lower surface side of the intermediate portion of the opposite side of the frame in addition to the four corners of the frame or the vicinity thereof (hereinafter simply referred to as the four corners of the frame). Furthermore, in addition to the four free running wheels provided at the four corners of the frame, there is also a case in which a fixed running wheel having a larger diameter than the free running wheels at the four corners is provided on the inner side of the frame. . By providing a large-diameter fixed traveling wheel at the approximate center of the long side of the frame (left and right sides with respect to the traveling direction), it is easy to turn the book truck on the spot and there are four corners due to the large-diameter traveling wheel. By providing the traveling wheels so that they slightly float (for example, around 2 mm) from the floor, the traveling resistance of the book truck of the present invention can be reduced.

  Furthermore, in the present invention, the left and right side plates of the shelf-like portion mounted and fixed on the frame are positioned sufficiently inside from the end portions of the left and right widths of the frame, so that the left and right side ends of the frame are Since it protrudes from the side plate, the left and right ends of the frame protruding from the left and right outer surfaces of the shelf member function as bumpers for the book track. The front and rear bumper parts as viewed from the front, that is, the left and right end sides, that is, the four corners of the frame, cover the corners of the frame at the same time as covering the turning shafts of the traveling wheels provided at the same time. If provided, the safety of the bumper portion can be increased and the aesthetics of the traveling wheel mounting portion can be improved. Even when the traveling wheel is provided at an intermediate portion on the opposite side of the frame, it is possible to provide a damper member covering the pivot shaft and covering the frame at that portion and damper members at the four corners of the frame.

  In the book track of the present invention, since the frame portion that protrudes outside the left and right side plates of the shelf-like portion mounted and fixed on the frame exists as a bumper portion, the outer surface of the handle is separated from the outer surface of the bumper portion. In order not to protrude, it is possible to provide it preferably inside. Then, even if the truck collides with or touches the wall of the building or the like during use of the book truck of the present invention, there is a gap between the handle and the wall. Thus, the hand is not caught between the wall and the handle, and the handle can be easily grasped.

  In the present invention, the book track is formed by forming a frame having a substantially rectangular shape when viewed from above, arranging a shelf-like portion on the frame in a horizontal posture, and providing traveling wheels on the frame. It solves all the problems of book trucks, such as the lack of strength and the inability to assemble alone, the difficulty of operability due to the handle position being at the top of the left and right frames, and insufficient bumper performance. be able to.

The perspective view of an example of this invention book track. The AA arrow directional view of the book track of FIG. BB arrow sectional drawing of FIG. CC sectional view taken on the line of FIG.

Next, embodiments of the present invention will be described with reference to the drawings.
In the figure, reference numeral 1 denotes a frame formed by bending a square pipe, which is an example of a metal material having a hollow section, into a substantially rectangular shape in plan view (see FIG. 4). The illustrated frame 1 is formed by joining a square pipe with a substantially U-shaped frame member in a plan view in which the frame 1 is substantially divided into two in the longitudinal direction. The reason for adopting this frame formation mode is to accommodate a member that becomes a support shaft of a large-diameter traveling wheel, which will be described later, within the cross section of the frame member.

  The aspect in the frame 1 in the present invention is not limited to this example. For example, a single square pipe can be bent so as to form a substantially rectangular shape, and the front and rear ends of the pipe can be joined. As the frame member, a square pipe or a round pipe can be used, and a metal mold having a hollow cross section can also be used. Further, a flat plate may be formed on the outer shape of the frame. Further, the planar shape of the frame is not limited to a regular square of straight sides, and may be formed on the sides where the front and rear sides in the running direction are bulged or recessed.

  In the figure, reference numeral 2 denotes a shelf-like portion fixed to the frame 1 and this shelf-like portion 2 is formed as follows as an example.

  That is, 21 and 22 are the left and right side plates in the shelf-like portion 2, and 23, 24, and 25 are three-stage double-sided shelf members laid between the both side plates 21 and 22, respectively. Since No. 25 is a double-sided type, it has back plates 23a, 24a, and 25a at intermediate portions viewed from the side.

  Here, the front and rear left and right side plates 21 and 22 are preferably formed of wood-based molded plates such as MDF. The reason is that if wood-based molded plates are used as the side plates 21 and 22, the side plates 21 and 22 are flat from the beginning, so that there is no need to process the surface flat like a sheet metal side plate. Because. In the present invention, the use of a metal or plastic member other than the wood-based molded plate for the side plates 21 and 22 is not excluded. In short, it is sufficient if the outer surfaces of the side plates 21 and 22 are flat panel bodies. The reason why the panel body is used is that the attachment position of the handle, which will be described later, can be freely selected and set at an arbitrary height on the flat surface. In the present invention, the side plates 21 and 22 may be formed by forming the outer shape of the side plate with a pipe material or the like and filling the inside of the outer shape with a surface member or not filling with the surface member. The point is that any material that can be self-supported and fixed on the frame 1 via the mounting member 4 to be described later may be used.

  Each shelf plate member 23-25 provided with the back plates 23a-25a is formed so as to form a generally T shape whose section is inverted by bending a metal plate such as a steel plate, and each shelf plate member 23-25. In the mounting margins 23b to 25b formed by bending at both ends in the longitudinal direction, the shelf members 2 are mounted on the opposing inner surfaces of the side plates 21 and 22 by bolts 23c to 25c, and are mounted and fixed on the frame 1 by this. Formed.

  In the present invention, the shelf member 2 having the above-described configuration requires that the outer surfaces of the left and right side plates 21 and 22 are located inside the left and right outer ends of the frame 1, so that the left and right length is considered. And the length of the shelf board members 23-25 which determine the left-right width of the shelf member 2 is decided.

  Reference numeral 3 denotes a handle provided on the outer upper part of the two side plates 21 and 22, which is formed to have a length slightly shorter than the left and right widths of the side plates 21 and 22 in order to operate the book track of the present invention, such as direction change. The left and right brackets 3b that support the straight handlebar 3a that the person grips are attached to the side plates 21 and 22 by bolting the side plates 21 and 22 with bolts 3c. When the side plates 21 and 22 to be attached are panel materials such as wood-based molding materials such as MDF, the handle 3 can freely set the width of the handle and the installation height, and can be easily changed. is there. The handle 3 may be provided on one of the side plates 21 and 22.

In the figure, reference numeral 4 denotes an attachment member for fixing the shelf member 2 mounted on the frame 1, but here, the side plates 21 and 22 of the shelf-like portion 2 are singly formed at the lower left and right outer ends thereof. An attachment member (or attachment bracket) provided for fixing to the frame 1. For example, the mounting member 4 is provided by fixing four metal plate bracket members having a substantially L-shaped cross section in a standing position at a predetermined position of the frame 1.
The mounting position of each mounting member 4 on the frame is, for example, about 50 to 80 mm from the left and right outer ends of the frame 1 to the inside of the frame 1. Since it is sufficient that the side surface protrudes from the outer surfaces of the left and right side plates 21 and 22 of the shelf member 2 to be mounted and fixed, the position is not limited to the above numerical value. The connection between the lower end portions of the side plates 21 and 22 and the mounting member 4 is a bolting 4a as in the case of the shelf members 23 to 25.

  As described above, the shelf member 2 is mounted and fixed on the upper surface of the frame 1 by being fixed to the four attachment members 4 on the side plates 21 and 22, and on the lower surface side of the four corners of the frame 1. Is a swingable type traveling wheel 5 (hereinafter, referred to as a universal traveling wheel 5), specifically, four free casters.

  The illustrated free running wheel 5 is attached by inserting the turning shaft of the running wheel 5 into a cylindrical shaft support 6 provided inside the four corners of the frame 1. If the traveling wheel 5 is mounted as described above, the shaft support portion 6 on which the turning shaft is supported is exposed to the outside and the appearance is not good. Therefore, in the present invention, the shaft support portion 6 is covered from above, and a cover member that covers the outer surfaces of the four corners of the frame 1, that is, the corner outer surface of the frame 1, is provided as a damper member 7 (buffer material 7) that also serves as a cover.

  The book track of the present invention sufficiently functions as a book track due to the structure from the frame 1 to the damper member 7 described above, but in the illustrated embodiment, four book tracks provided at the four corners of the frame 1 are used. In addition to the universal traveling wheel 5, a traveling wheel 8 having a diameter sufficiently larger than that of the traveling wheel 5 is provided inside the substantially central portion of the frame 1. This traveling wheel 8 is a stationary traveling wheel that does not shake its head.

  The large-diameter traveling wheel 8 includes a bearing member 8a in the cross-section of the frame member when a plane U-shaped frame member is butt-joined, and the cantilever shaft 8b is used as a wheel shaft on the bearing member 8a. It is attached to the shaft 8b with the bearing of the wheel 8 supported. When the two large-diameter traveling wheels 8 are in contact with the ground, the four traveling wheels 5 are preferably set to float about 1 to 3 mm from the floor.

  The book track of the present invention provided with the above-mentioned large-diameter traveling wheel 8 is configured to rotate or rotate while the large-diameter traveling wheel 8 is mainly grounded during turning and traveling. The rolling resistance can be reduced compared to the rolling resistance in which all the wheels are grounded during traveling. Moreover, since the book track turns around the large-diameter wheel 8 during turning, the rolling resistance during turning can be kept small. In the present invention, when a large-diameter fixed traveling wheel 8 or a normal free-running wheel is provided in the middle portion of the left and right sides of the frame 1, the free-running wheel 5 is provided in the middle portion of the front and rear sides of the frame 1. There are also ring arrangement patterns.

  The present invention is as described above, and the left and right side plates of the shelf-like portion are respectively erected and fixed on a horizontal frame, and the shelf-like member is constructed on both side plates, whereby the shelf-like portion is placed on the frame. Since the book track was formed by providing traveling wheels on at least the four corners of the horizontal frame to form a book track, the shelf-like portion removed from the horizontal frame and disassembled, and the traveling wheels attached, or By using the frame from which the traveling wheel is removed as a main member, the horizontal frame is configured to support the load on the shelf and the load on the traveling wheel, so the strength as a book truck is higher than the conventional product. It can be assembled by one person.

Further, since the width of the shelf-like portion is made smaller than the length of the frame and the shelf-like portion is mounted and fixed on the frame, the frame portion protruding from the shelf-like side plate is used as a bumper both in appearance and substantially. Further, since the damper members are provided at the four corners of the frame, the safety is high and, therefore, it is extremely useful as a book truck of a type having a large load capacity.
Further, since the above-described mounting form is adopted for the horizontal frame and the shelf-like portion thereon, the handle can be provided so as not to protrude from the frame, thereby avoiding the danger associated with the handle during operation. .

DESCRIPTION OF SYMBOLS 1 Book track frame 2 Shelves 21 and 22 Shelves side plates 23-25 Shelf members 3 Handles 4 Shelves 2 mounting members (mounting brackets)
5 Swivel running wheel 6 Revolving shaft of running wheel 7 Damper member 8 Large diameter fixed running wheel

Claims (5)

  A book track comprising: a frame having a substantially rectangular shape when viewed from a plane; a shelf-like portion disposed on the frame in a horizontal position; and a running wheel provided on the frame.   2. The book track according to claim 1, wherein the left and right side plates of the shelf-like portion can be fixed independently on the frame at a position inside from the left and right end portions of the frame.   3. The book track according to claim 1, wherein the traveling wheels are provided on a lower surface of the four corners of the frame or a lower surface of an intermediate portion of the opposite side of the frame.   The book track according to any one of claims 1 to 3, wherein a shock-absorbing material having a cover function for the attachment portion is attached to the attachment portion of the traveling wheel of the frame as a damper member.   The book track according to any one of claims 1 to 4, wherein the handle is provided on the outer surface of the left and right side plates of the shelf member so as to be positioned inside the outer end surface of the left and right side of the frame.

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