Drawer Cabinet

Abstract: In a cabinet of a type in which drawers received in a box-shaped case can be pulled out through both end openings of the case, an arrangement is provided which makes it possible to retain each drawer in a position in which it is neatly received in the case. The case has a drawer receiving space having openings at both ends of the case. The drawer received in the drawer receiving space is supported so as to be slidable outward through either end opening. A positioning means is provided between the underside of the drawer and the opposed surface of a drawer support member to retain the drawer when pushed into the drawer receiving space so that the cabinet looks always in order.

Description: BACKGROUND OF THE INVENTION This invention relates to a cabinet having a box shaped case in which are received drawers which can be pulled out at least forward and backward according to the preamble of claim 1. Side cabinets used in hospitals and desk workers' cabinets have a box-shaped case in which are received drawers which can be pulled out through two opposite ends of the case. A two-way draw cabinet can be placed at any position provided its drawers can be pulled out through two end openings, and thus is convenient to use. Conventional such two-way draw cabinets had no positioning means for retaining the drawers in a position in the respective drawer receiving spaces in the case. Thus, a user may push in a drawer or two too deep into the case, in which case, the drawers' ends remote from the user protrude from the case, or may not push in a drawer or two deep enough into the case, in which case, the drawer's ends near the user protrude from the case. In either case, the cabinet looks messy. Closest prior art is a cabinet with double-acting drawers (US-A-2 914 370), having a drawer which is received in a box-shaped case, and which can be pulled out through both ends of the case and pushed back into the case accurately to a predetermined position so that the cabinet looks always in order and is easy to use. An object of this invention is to improve this cabinet. SUMMARY OF THE INVENTION According to this invention, there is provided a cabinet comprising a box-shaped case having a drawer receiving space and end openings on front and back ends of the case, a drawer slidably received in the drawer receiving space so as to be pulled out of the drawer receiving space through either of the openings, and a positioning means for positioning and retaining the drawer in a position where the drawer is completely inserted in the space according to the characterizing part of claim 1. Other features and objects of the present invention will become apparent from the following description made with reference to the accompanying drawings, in which: BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a cabinet embodying this invention; Fig. 2 is a side view in vertical section of the same; Fig. 3 is a sectional view taken along line III-III of Fig. 2; Fig. 4 is an exploded perspective view of the same; Fig. 5 is a sectional view taken along line V-V of Fig. 2; Fig. 6 is a sectional view taken along line VI-VI of Fig. 3; Fig. 7 is a horizontal sectional view of another cabinet embodying this invention; Fig. 8 is a sectional view taken along line VIII-VIII of Fig. 7; Fig. 9 is a sectional view taken along line IX-IX of Fig. 7; Fig. 10 is an exploded perspective view of the same; and Figs. 11A and 11B are exploded perspective views of permanent magnets thereof. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Embodiments of this invention are described below with reference to the drawings. (First Embodiment) As shown in Figs. 1-4, a box-shaped case 1 is formed with a plurality of drawer receiving spaces 2 arranged one over another and having openings at both ends and one side of the case 1. A drawer support frame 3 and a frame support slide frame 4 in which the support frame 3 is received are inserted in each drawer receiving space 2. Each drawer support frame 3 comprises a pair of end panels 5 insertable into the space 2 through either end opening 2a, and bridges 6 connecting both ends of the panels 5 at their bottoms. The frames 3 can be pulled out of the respective spaces 2 through either end opening 2a by engaging a finger in a pull 5a formed on each panel 5. Each slide frame 4 comprises a slide plate 7 and a side panel 8 provided along one side edge of the slide plate 7 and is insertable into each space 2 through its side opening 2b. In each space 2, the slide plate 7 has its portions near both ends slidably supported by guide ribs 10 formed on a bottom plate 9 (Fig. 3). Thus, the slide plates 7 can be pulled out of the respective space 2 through the side opening 2b along the guide ribs 10 by engaging fingers in a pull 8a formed on the side panel 8. The drawer support frame 3 supports a drawer 11 between the pair of end panels 5. The drawer 11 has a pair of lateral guide plates 12 laterally slidably supported by first rails 13 provided on the backsides of the end panels 5 of the drawer support frame 3. The drawer 11 has a pair of bars 14 provided on the underside of its bottom plate near both sides to extend substantially the entire length thereof. The bars 14 are slidably received in guide grooves 15a of second rails 15 provided on the slide plate 7 of the slide frame 4. (Fig. 4) Positioning means 20 are provided on the opposed surfaces of the second rails 15 and the drawer 11 to retain the drawer 11 in position with the drawer 11 completely received in the respective drawer-receiving space 2. The positioning means 20 comprises a plurality of recesses 21 provided on the bottom of the guide groove 15a of each second rail 15, and a plurality of semispherical protrusions 22 provided on the underside of each bar 14. When the drawer is completely inserted in the space 2, the protrusions 22 engage in the recesses 21, retaining the drawer 11 in position. When the drawer support frame 3 is pulled out by engaging a finger or two in the pull 5a of one of the panels 5, the drawer 11 can be pulled out together with the drawer support frame 3 along the guide grooves 15a of the second rails 15, while the protrusions 22 get out of the recesses 21 and slide along the guide grooves 15a. When the drawer 11 is pulled out to the position shown in Fig. 3, one protrusion 22 engages in a recess 21, thus temporarily retaining the drawer in position. When the drawer support frame 3 is pushed in, the drawer 11 is pushed into the space 2 together with the drawer support frame 3. When the drawer support frame 3 is completely inserted in the space 2, the protrusions 22 engage in the respective recesses 21, thereby accurately retaining the drawer in position in the space 2. On the other hand, when the slide frame 4 is pulled by engaging a finger or two in the pull 8a of its panel 8, the slide frame 4 can be pulled out, guided by the ribs 10. At this time, since the bars 14 provided on the underside of the drawer 11 are received in the guide grooves 15a of the second rails 15 of the slide frame 4, the drawer 11 is pulled out together with the slide frame 4. When the slide frame 4 is pulled out in this way, if the drawer 11 has not been inserted completely in the space 2, it is impossible to pull out the slide frame 4 because one corner of the drawer 11 interferes with one of the corner posts 18 of the case 1 defining its side opening 2b. If this happens, the drawer support frame 3 has to be pushed in until the frame 3 is completely received in the space 2, and then the frame 4 has to be pulled out once again. But when the drawer 11 is inserted into the space 2 by pushing in the drawer support frame 3, the drawer 11 can be held in the position where it is completely inserted in the space by the engagement of the protrusions 22 in the recesses 21. Thus, the slide frame 4 can be smoothly pulled out together with the drawer 11 without the possibility of a corner of the drawer 11 interfering with one of the corner posts 18 of the case. The drawer 11 can thus be pushed in and pulled out smoothly and easily without the need to repeatedly pushing in and pulling out the drawer support frame 3. The slide frame 4 can be inserted completely into the space 2 together with the drawer 11 simply by pushing it in until it abuts the back plate 19 of the case 1. Thus, the drawer support frame 3 can be smoothly pulled out through either end opening 2a without the possibility of one corner of the drawer 11 interfering with the corner post 18. (Second Embodiment) Figs. 7 to 10 show another cabinet embodying this invention. The cabinet of this embodiment has no drawer support frame 3 in the first embodiment shown in Figs. 1 to 4. The drawer 11 has bars 14 provided on the underside thereof on both sides and received in guide grooves 15a formed in the top surface of the slide plate 7 of the slide frame 4 on both sides thereof so as to be slidable along the grooves 15a. The slide plate 7 of the slide frame 4 has a pair of ribs 30 provided on its underside near both ends to extend the entire width thereof. The ribs 30 are received in guide grooves 31 formed in the bottom plate 9 near both ends to extend the entire width thereof to slidably support the slide frame 4. The drawer 11 is held in position by a positioning means 20 comprising permanent magnets 23a, 23b of different polarity. The permanent magnet 23a is embedded in the underside of the drawer 11, while the permanent magnet 23b is embedded in the top surface of the slide plate 7 of the slide frame 4. To retain the slide frame 4 in position in the space 2, a second positioning means 40 is provided between the drawer 11 and the case 1 (Fig. 8). The second positioning means 40 has a positioning plate 41 provided on the other side of the slide frame 4. The positioning plate 41 abuts a protrusion 42 formed on the inner surface of the back plate 19 of the case 1. At this position, a metallic piece 44 embedded in the protrusion 42 is magnetically attracted to a permanent magnet 43 embedded in the positioning plate 41, thus retaining the frame 4 in position. In this embodiment, when the drawer 11 is pushed into the space 2, the electromagnets 23a and 23b that differ in polarity are magnetically attracted toward each other, thus retaining the drawer 11 in position. Thus, it is possible to smoothly pull out the drawer 11 together with the slide frame 4 without the possibility of one corner of the drawer inteferring with the corner post 18. The permanent magnets 23a, 23b may be circular ones having the same diameter as shown in Fig. 11A. In another possible arrangement shown in Fig. 11B, the permanent magnet 23a is a ring, while the permanent magnet 23b is a pin having substantially the same diameter as the internal diameter of the ring magnet 23a. In this arrangement, the magnets are kept coaxial with each other when they are magnetically coupled together, so that it is possible to retain the drawer 11 in position with extremely high accuracy. The cabinets of both embodiments have openings on three sides, but the present invention is not limited to this type of cabinets. For example, the present invention is applicable to a cabinet having only end openings so that the drawer can be pulled out back and forth only. In this case, the drawer support frame 3 and the slide frame 4 shown in Fig. 4 are not needed. Positioning means 20 are provided on the opposed parts of the underside of the drawer 11 and the bottom plate 9. Also, the present invention encompasses a cabinet having openings on all four sides of the case so that the slide frame 4 can be pulled out through either side openings. The drawer 11 can be pulled out through any of the four openings. In this case, positioning means for the slide frame 4 are provided between the underside of the slide frame 4 and the top of the bottom plate 9. As described above, according to this invention, by pushing in the drawer into the drawer receiving space of the case through one of its end openings, the drawer is positioned by the positioning means, so that the cabinet looks always neat. The slide plate is supported so as to be slidable outward through a side opening formed in the case. Thus, the drawer can be pulled out in three directions through the end openings and one side opening, so that the cabinet can be placed relatively freely and thus is convenient to use. Since each of the drawer and the slide frame can be held in a predetermined position in the drawer receiving space, the drawers can be pulled out smoothly in any of the three directions.

Claims: A cabinet comprising a box-shaped case (1) having a drawer receiving space (2) and end openings (2a) on front and back ends of said case (1), a drawer (11) slidably received in said drawer receiving space (2) so as to be pulled out of said drawer receiving space (2) through either of said openings (2a) and a positioning means for positioning and retaining said drawer (11) in a position where said drawer (11) is completely inserted in said space (2), characterized in that said case (1) has an additional opening (26) on one side thereof, wherein said drawer (11) is supported by a slide frame (4) supported to be movable outward through said additional opening (2b), and wherein a second positioning means (20; 40) is provided to retain said slide frame (4) in a position where said slide frame is completely inserted in said drawer receiving space (2). A cabinet as claimed in claim 1, characterized in that said positioning means (20) comprises semicircular protrusions (22) provided on one of the underside of said drawer (11) and an opposed surface of a drawer support member, and a recess (21) formed in the other. A cabinet as claimed in claim 1, characterized in that it comprises a drawer support member (9) for supporting said drawer (11), wherein said positioning means (40) comprises a pair of permanent magnets (23a, 23b) that differ in polarity, one of said magnets (23a) being secured to the underside of said drawer (11) and the other (23b) to the top surface of said drawer support member (9). A cabinet as claimed in claim 3, characterized in that said permanent magnets (23a, 23b) are circular in shape.

Inventors: AOYAMA MASATAKA, AOYAMA, MASATAKA, Aoyama, Masataka c/o Kyoyei Kikaku Inc.
Applicants: KYOYEI KIKAKU INC, KYOYEI KIKAKU INC.
Application year: 1998
Main classification: A47B88
IPC codes: A47B88, A47B67