JP2008036117A - Metallic assembly shelf and wagon - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily perform assembly and to provide a strong product with excellent appearance in which the height position of a shelf plate can be variably set, for a metallic assembly shelf and a wagon including a plurality of rectangular shelf plates 1 in a shallow box shape and four columns 2 for supporting the four corner parts. <P>SOLUTION: A female threaded piece 4 is inserted into the hollow part of the column 2 so as to be freely slid in a vertical direction, and the corner part peripheral side wall 12 of the shelf plate 1 is fastened and fixed to the female threaded piece 4 with a fixing screw. The female threaded piece 4 can be positioned and fixed to the column 2 in a temporarily fixed state at an optional height position by engaging mechanisms 24 and 42. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a metal assembly shelf of the kind generally referred to as a steel shelf and a wagon with casters attached to the assembly shelf.

  In offices, factories, kitchens, etc., as well as homes, metal assembly shelves and wagons with casters are often used for organizing, storing, storing, or simply moving goods.

  Such an assembly shelf generally includes a plurality of shallow box-shaped shelf plates made of press-formed products of metal plates, and four support columns that are attached to and support the corner portions of the shelf plates. In many cases, the user assembles and installs it at a place and is put to practical use.

Conventionally, as proposed various improvements of such metal assembly shelves and wagons, those shown in the following Patent Documents 1 to 5 are known.
Japanese Patent No. 347988 JP 11-192129 A JP-A-8-228846 Utility Model Registration No. 3060580 Utility Model Registration No. 3052950

  In this kind of assembly-type shelf or wagon, there are the following basic requirements in terms of usage or function.

  First, it can be easily assembled.

  As mentioned above, this kind of assembly shelf etc. is often assembled on the user side for practical use, so it is as simple as possible and can be assembled in a short time with a small number of set screws and bolts required for assembly. It is desirable that it can be completed.

  Second, it is strong in the assembled state.

  That is, it must be strong and solid so that the shelf board does not wobble and the column does not tilt by the force from the side. In particular, such fastness is strongly required in the case of a wagon that moves by pushing on the floor surface.

  Third, the appearance should be as good as possible.

  In particular, assembly shelves and wagons used in offices, laboratories, kitchens and the like are desired to be in harmony with the room atmosphere as a kind of furniture.

  Fourthly, the height position of the shelf board can be variably set according to the size and type of articles to be organized and stored.

  Except in the case of table wagons that have only two upper and lower shelf plates, the height position of each shelf is fixed in one place so that it can be conveniently used for organizing and storing various items. It is not desirable, and it is desirable that it can be variably set at an arbitrary height position. In addition to the initial setting of the height position of the shelf board, it is required that the work can be easily performed even when it is changed midway.

  In response to the various requests as described above, Patent Documents 1 to 5 showing the prior art show various improvement proposals.

  For example, in response to the request for simplicity of the first assembly, in Patent Document 5, a round pipe is used as a support column and a special coupling fitting is used, so that a bolt and nut for fastening required for assembly are used. It has been proposed to reduce the number used.

  In addition, in response to the demand for robustness in the second assembled state, Patent Documents 1 to 4 propose improvement of the fastening structure between the column and the shelf corner, including the improvement of the shape of the corner stopper of the shelf. Are shown variously.

  However, the conventional proposals as described above have not been able to satisfy the above first to fourth requirements in a comprehensive and highly satisfactory manner.

  An object of the present invention is to provide a metal assembly shelf that can meet the first to fourth requirements, and a wagon using the same.

  In order to solve the above-mentioned problems, the present invention employs configurations as described in [1] to [5] below.

[1] In an assembly shelf including a plurality of shallow box-shaped shelf boards, four support columns supporting the four corners of the shelf boards, and a set screw for connecting each shelf board and the support columns,
The column is formed in a substantially hollow shape having a slit-like opening continuous in the length direction in a part of the outer peripheral wall,
Inside the hollow portion of the support column, a female screw piece for fastening the shelf plate is slidable in the vertical direction,
A metal assembly shelf capable of changing a height position of a shelf plate, wherein the shelf plate is connected and fixed to the female screw piece via a set screw at a corner peripheral wall.

[2] In the hollow portion of the support column, the female screw piece can be displaced and moved between a proximity position with respect to the opening and a separation position in the back direction away from the opening.
And a spring member that elastically biases the female screw piece in the proximity position direction and holds the female screw piece in the proximity position,
Engage with the strut side at the close position to hold the female screw piece at a predetermined height position, and release the engagement with the strut side at the separated position to move the female screw piece vertically. 2. The metal assembly shelf capable of changing the height position of the shelf plate according to the item [1], wherein a plurality of locking means are provided at predetermined intervals in the length direction of the column.

[3] The support column has inner winding portions composed of first, second, and third bent edges that are sequentially bent inward at both side edges of the L-shaped main portion. While the slit-shaped opening is formed between both inner winding parts,
The female thread piece inserted into the hollow portion of the support column is substantially L-shaped or cross-sectional in cross section, and the inner winding portion prevents escape from the opening,
At the third or second bent edge of the inner winding portion of the support column, a large number of female screw piece locking notches are provided at predetermined intervals, and the locking portion of the female screw piece is located at the notch portion at the close position. The metal assembly shelf according to item [2], wherein the height position of the shelf plate can be changed.

[4] A corresponding L-shaped corner fastening piece is disposed in contact with the inside of the peripheral side wall of the corner portion of the shelf board, and the corner fastening piece and the support column are disposed between them. It is fastened and fixed with the set screw while sandwiching the peripheral side wall,
The corner fastening pieces have locking protrusions that are vertically spaced apart from each other and are paired with each other on the outer surfaces of both arms that extend at right angles to each other. According to the above [1] to [3], which protrudes to the outer surface of the shelf board through a through hole formed in a corresponding part of the peripheral side wall of the board in a manner of swallowing the support column from both sides. The metal assembly shelf which can change the height position of the shelf board of any one of Claims.

  [5] A metal wagon having a caster attached to a lower end of each column in the assembly shelf according to any one of [1] to [4] and movable.

  As described in [1] above, the present invention assumes that a female screw piece is slidably inserted into a hollow portion of a column that is substantially hollow, and the corner portion of each shelf plate is inserted into this female screw piece. Are connected and fixed with setscrews, so that the height position of each shelf can be variably set to an arbitrary height position according to the article to be placed and stored, as well as the conventional purpose. In the configuration for, as shown in Patent Documents 2 to 4, a large number of mounting holes are arranged in the length direction at predetermined intervals, and this is an appearance that looks like a mechanical part. However, in the present invention, each shelf plate is connected and fixed to the female screw pieces installed in the support column as described above. As it is made, the appearance of the support is refreshing It shall have, can without a favorable style to expose the exterior Furniture yet turn steel shelves.

  In addition, as described in [2] above, the female screw piece is locked and fixed in a temporarily fixed state at an arbitrary height position by a locking means in the support column. In addition to the above, even when changing the height of the shelf board, the height positions of the female screw pieces on each column are aligned and temporarily held, and then the corners of the shelf board are sequentially connected with set screws. Thus, the shelf board can be easily placed in the correct horizontal state. In addition, the operation of changing the height position of the female thread piece also releases the engagement by the locking means by pushing the female thread piece from the opening side against the spring against the spring with the fingertip toward the back side of the pillar. It can slide freely in the vertical direction. Then, if the pushing force by the fingertip is removed when the predetermined position is reached, the female thread piece moves forward to a position close to the opening side by the elastic force of the spring member, and engages with this at the fitting position with the locking means. As a result, it can be engaged and held in a locked state at a predetermined height position. Therefore, the female thread pieces do not inadvertently drop, descend, or move out of position in the vertical column, and both the shelf mounting operation and the height position changing operation can be easily performed. Can do.

  Further, according to the configuration described in [3] above, the strut can be manufactured as a press-molded product from a metal plate at a relatively low cost, and the engagement structure portion between the female screw piece and the strut is hardly visible. . That is, since the female screw locking notch is not exposed to the outside, the appearance can often be improved.

  Further, as described in [4] above, on each shelf plate side, a corner fastening piece is disposed in contact with the corner portion, and the corner fastening piece and the female screw piece are fastened to each other. When mounting the unit in a fixed state, the required number of set screws is minimized to one for each corner, enabling a significant reduction in shelf assembly man-hours and simplifying assembly work. The appearance of the set screw is minimized and the appearance of the inner corners of each shelf and the joints with the columns are refreshed to further improve the appearance. It can be done.

  Furthermore, as described in [5] above, when the wagon has casters attached to the lower ends of the columns of the assembly shelf described in [1] to [4], the various effects as described above. It is possible to provide a shelf-type wagon that is convenient for conveying goods.

  FIG. 1 shows a metal assembly shelf (A) according to the present invention, in which a caster (6) is attached to the lower end of each column, and a handle (7) for pushing is attached to an upper side surface portion to place and store articles. It is shown in an embodiment configured in the form of a wagon (B) for use and transporting movement.

  The metal assembly shelf (A) includes three or more metal shelf boards (1) and four metal columns (2) that support the four corners as main components. To do.

  The shelf board (1) is formed by press-molding a metal plate such as an iron plate or an aluminum plate into a shallow box shape of a rectangular quadrilateral quadrilateral. Accordingly, each shelf plate (1) has a rectangular flat bottom plate portion (11) and a peripheral side wall (12) that rises from its four sides. The peripheral side wall (12) is configured such that the upper end edge is folded inward and has missing portions (13) at the four corners of the shelf board (1) (see FIG. 2), and will be described later through the missing portion (13). The set screw (3) can be penetrated. Of course, it is also optional that the peripheral side wall (12) is made continuous with the corner and does not have the missing portion (13). In that case, the missing portion (13) can be substituted by forming a through hole for inserting a set screw. Moreover, the shelf board (1) may be used in the downward shallow box-like attitude | position which turned upside down in relation to the use of a shelf or a wagon. This case is also one of the embodiments of the present invention.

  The column (2) is also formed by press-molding from a metal plate, and is formed in a substantially hollow shape having a slit-like opening (21) continuous in the length direction on a part of the outer peripheral wall. ing. More specifically, as shown in FIGS. 2 and 3, the support column (2) includes a main portion (20) having an L-shaped cross section and a first bent portion that is sequentially bent inward from both side edges at right angles. It has an inner winding part (22) consisting of an edge (22a), a second bent edge (22b), and a third bent edge (22c), and the inner winding part (22) between the left and right inner winding parts (22) (22) The slit-shaped opening (21) is formed.

  A number of female screw pieces (4) corresponding to the number of shelf plates (1) are inserted into the hollow portion (23) of each support column (2) so as to be slidable in the vertical direction. The female screw piece (4) is made of hard synthetic resin or metal, and as shown in FIG. 2, as a whole, has a substantially cross-sectional or L-shaped cross section, and penetrates in the center of the refracting portion. A female screw hole (4a) is provided.

  The female thread piece (4) is inserted into the hollow portion (23) in the hollow portion (23) with a sufficient margin and in a state in which escape from the opening portion (21) is prevented. It is slidable in the vertical direction and is close to the opening (21) side of the column (2) as shown in FIG. 3B, and shown in FIG. It is possible to move in the lateral direction between the rearwardly spaced position away from the opening (21).

  And the spring which consists of a leaf | plate spring of a cross-sectional hat shape in the plane part of the back side of the female screw piece (4), ie, the back surface of the both right and left wing parts facing the L-shaped main part (20) of a support | pillar (2), respectively. The member (43) is fixed by means such as adhesion, pinning or welding. Due to the action of the spring member (43), the female thread piece (4) is normally elastically biased in the direction of the position close to the opening (21) of the support (2) as shown in FIG. It has been made. Accordingly, the female thread piece (4) is pushed inward from the opening (21) of the support post (2) with the fingertip, thereby resisting the elasticity of the spring member (43). It can be moved and displaced to a position closer to the back in the column (2) as shown in A).

  On the other hand, the female screw piece (4) is formed with a thin-walled recess (41) (41) on the front side of the wings on both sides. As a result, a pair of locking portions (42) and (42) are formed above and below the recessed portion (41). These locking portions (42) and (42) are provided with locking notches (24) on the support (2) side when the female thread piece (4) is positioned at the close position in FIG. And the female thread piece (4) is positioned and fixed, and when the female thread piece (4) is pushed into the separation position shown in FIG. 3 (A), it escapes from the locking notch (24). The above engagement is released, and the movement of the female screw piece (4) in the vertical direction is freed.

  Accordingly, the locking notch (24) on the column (2) side is the same height position of the third bent edge (22c) of all four columns (2) and the length of the column. A large number are provided at predetermined intervals in the vertical direction.

  The third bent edge (22c) of the support post (2) is for improving the appearance of the support post (2) in order to avoid the risk of injury due to the fingers touching the side edge of the support post (2). For this reason, it is desirable to provide this, but it is not always necessary. Accordingly, when the third bent edge (22C) is not provided, a notch portion instead of the notch portion (24) or a locking hole is formed on the second bent edge (22b), and the female screw It is good also as what engages engaging parts, such as a projection, provided in the corresponding part of piece (4).

  Corner fastening pieces (5) are arranged inside the peripheral side walls (12) at the four corners of the shelf board (1). This corner fastening piece (5) is made of hard synthetic resin such as polyamide resin or metal, is formed in a substantially L shape corresponding to the corner portion, and the outer surfaces of both arms extending at right angles are shelf plates. It arrange | positions in contact with the peripheral side wall inner surface of the corner of (1).

  Then, the corner fastening piece (5) and the female screw piece (4) at the corresponding position are fastened and fixed by the set screw (3) with the corner peripheral side wall (12) of the shelf board (1) sandwiched between them. Has been. The set screw (3) passes through the through hole (51) drilled in the center of the refracting portion of the corner fastening piece (5) and is screwed into the female screw piece (4) in the support column (2). The corner peripheral side wall (12) is firmly attached between the female screw piece (4) and the corner fastening piece (5). However, the shelf board (1) is still insufficiently fixed by this alone.

  Therefore, in this embodiment, as a unique device, a locking protrusion (52) is provided on the corner fastening piece (5) to secure the mounting strength of the shelf board (1) and to prevent the wobbling of the shelf. It is supposed to be able to measure all possible.

  That is, the corner fastening piece (5) has a total of four right-angled triangular protrusions (52) which are spaced apart from each other on the outer surfaces of the left and right arms extending at a right angle. Are projecting together. These locking protrusions (52) are formed in a right-angled triangle with the surface facing the direction of the refracting portion of the corner fastening piece (5) raised from the outer surface at a right angle to form a vertical face (52a). is there.

  As shown in FIGS. 2 and 3 (B), in the assembled state of the shelf, the locking protrusion (52) is drilled at a corresponding position on the corner peripheral side wall (12) of the shelf plate (1). The first bent edge (22a) is projected to the outside of the shelf board (1) through a total of four through holes (14), and the projecting portions are located on both sides of the column (2), that is, at right angles to each other. ) (22a), the vertical surfaces (52a) and (52a) are in contact with each other. Therefore, the said locking protrusion (52) is the thing which swallowed the support | pillar (2) from both sides with the protrusion part from a shelf board (1).

  Thus, the shelf plate (1) is passed through the through hole (14) of the peripheral side wall (12) of the shelf plate (1), so that the shelf plate (1) is attached to the corner fastening piece (5). And the unintentional downward movement of the shelf board (1) is surely prevented.

  Further, by strongly tightening the set screw (3), the support column (2) tends to be deformed in the opening direction via the female screw member (4), that is, the first bent edges (22a) (22a) are directed outward. On the other hand, the locking projection (52) presses the first bent edges (22a) (22a) from the outside to prevent the deformation, and the pressure contact force increases. Therefore, the mounting state of the shelf board (1) is often reinforced.

  Furthermore, since the above-mentioned locking protrusions (52) (52) which are paired apart from each other in the vertical direction swallow the column (2) from both sides, the column (2) with respect to the shelf (1) Harmful wobble is prevented. That is, the pair of locking projections (52) (52) protruding outward through the through holes (14) of the shelf board (1) are positioned on both side surfaces of the column (2) at positions spaced vertically. Since the squeezing is carried out, the relative swing of the column (2) with respect to the shelf board (1) is surely prevented, and the stability and robustness of the shelf in the assembled state are improved.

  The present invention is a floor-mounted assembly shelf (A) mainly composed of a plurality of shelf boards (1) and support columns (2) supporting the four corners as described above, And as shown in FIG. 1, a caster (6) is attached to the lower end of each column (2) of the assembly shelf (A) and, if necessary, between a pair of columns (2) (2) on one end side. A transport wagon (B) that is movable on the floor surface by attaching a hand handle (7) in a horizontal form is also an object.

  In addition, various design changes are permitted for the above-described embodiment without departing from the limitation requirements of the present invention.

  For example, the column (2) may have a C-shaped cross section or a partially circular shape.

  Moreover, the internal thread piece (4) inserted in the support | pillar (2) can employ | adopt arbitrary shapes by the correspondence with the hollow part shape of a support | pillar (2). The engaging portion (42) is not limited to the embodiment shown in the drawing, but is formed in a protruding shape on the outer surface of the female screw piece (4) and fitted into the corresponding engaging hole of the support column (2). It is also possible to make it happen. Furthermore, the spring member (43) on the back side is not limited to the case where a leaf spring as shown in the illustrated embodiment is used, but a coil spring, a sponge-like synthetic resin elastic body, or a female screw made of synthetic resin or metal. It is good also as what comprises the elastic protrusion piece etc. which were integrally molded by protrusion in this piece.

It is a perspective view which shows the embodiment at the time of comprising in a wagon with the assembly shelf of this invention. It is the perspective view which showed the structure of the connection part of a shelf board and a support | pillar in the decomposition | disassembly state. FIG. 3 (A) is a cross-sectional view showing the state when the female screw piece is pushed into the separation position before the shelf board is attached, and FIG. 3 (B) is the shelf. It is sectional drawing which shows the state after board attachment. It is a center part horizontal sectional view of an internal thread piece. It is a center part horizontal sectional view of a corner fastening piece. FIGS. 6A and 6B show a structure of an engaging portion between a support column and a female screw piece, FIG. 6A is a state corresponding to FIG. 3A, and FIG. 6B is a cross section corresponding to FIG. FIG.

Explanation of symbols

A ... Assembly shelf B ... Wagon 1 ... Shelf plate 11 ... Bottom plate 12 ... Peripheral side wall 14 ... Through hole 2 ... Post 20 ... Main body of the post Part 21 ... Opening part 22 ... Inner winding part 22a..First bent edge 22b..Second bent edge 22c..Third bent edge 23 ... Hollow part 24 ... Locking Notch 3 ··· Set screw 4 ··· Female screw piece 4a ··· Female screw hole 41 ··· Recess portion 42 ··· Locking portion 43 ··· Spring member 5 ··· Corner fastening piece 51 ... Through hole 52 ... Locking protrusion 6 ... Caster 7 ... Handle

Claims (5)

In an assembly shelf comprising a plurality of shallow box-shaped shelves, four columns supporting the four corners of the shelves, and set screws connecting the shelves and the columns,
The column is formed in a substantially hollow shape having a slit-like opening continuous in the length direction in a part of the outer peripheral wall,
Inside the hollow portion of the support column, a female screw piece for fastening the shelf plate is slidable in the vertical direction,
A metal assembly shelf capable of changing a height position of a shelf plate, wherein the shelf plate is connected and fixed to the female screw piece via a set screw at a corner peripheral wall. In the hollow portion of the support column, the female screw piece can be displaced and moved between a proximity position with respect to the opening and a separation position in the back direction away from the opening,
And a spring member that elastically biases the female screw piece in the proximity position direction and holds the female screw piece in the proximity position,
Engage with the strut side at the close position to hold the female screw piece at a predetermined height position, and release the engagement with the strut side at the separated position to move the female screw piece vertically. 2. The metal assembly shelf according to claim 1, wherein a plurality of locking means are provided at predetermined intervals in the length direction of the column. The support column has inner winding portions formed of first, second, and third bent edges that are sequentially bent inward at both side edges of the main portion having an L-shaped cross section. While the slit-shaped opening is formed between the parts,
The female screw piece inserted into the hollow portion of the support column is substantially L-shaped or cross-sectional in cross section, and the inner winding portion prevents escape from the opening,
At the third or second bent edge of the inner winding portion of the support column, a large number of female screw piece locking notches are provided at predetermined intervals, and the locking portion of the female screw piece is located at the notch portion at the close position. The metal assembly shelf capable of changing the height position of the shelf board according to claim 2, wherein the shelf is fitted and locked. A corresponding L-shaped corner fastening piece is disposed in contact with the inside of the peripheral side wall at the corner of the shelf plate, and the corner fastening piece and the column support the corner peripheral side wall of the shelf plate therebetween. It is fastened and fastened with the set screw,
The corner fastening pieces have locking projections that are paired with each other on the outer surfaces of both arms extending at right angles to each other, and in the assembled state of the shelf, 4. The projection according to claim 1, wherein the column is protruded from the outer surface of the shelf plate in a manner of swallowing the support column from both sides through a through hole formed in a corresponding portion of the peripheral side wall of the plate. The metal assembly shelf which can change the height position of the shelf board as described in the item.   A metal wagon, wherein a caster is attached to a lower end of each column in the assembly shelf according to any one of claims 1 to 4, and is movable.