JP6226659B2 - Metal drawer, method of manufacturing the same, and storage fixture provided with the same - Google Patents

Description

  The present invention relates to a metal drawer, a manufacturing method thereof, and a storage fixture provided with the same.

  The drawer has a tray-like shape that opens upward, and has a rectangular bottom plate in plan view, a front plate, a rear plate, and left and right side plates disposed around the drawer. And in the case of a drawer made of a metal plate such as a steel plate or a stainless steel plate, the front plate is often manufactured and assembled as a separate member from the bottom plate, but this is troublesome to manufacture and increases the cost. There is.

  Therefore, it has been proposed that the main body of the drawer is composed of a single metal plate (generally a steel plate). As an example, in the patent document 1, the applicant of the present application disclosed a bottom plate, a front plate, a rear plate, and left and right sides. In a drawer composed of a single metal plate with the face plate, inward projections (or outward depressions) are bent on the left and right side plates, and a partition plate is attached by slitting the projections. Disclosed what can be done.

JP 2013-34586 A

  The drawer of Patent Document 1 has an advantage that a partition can be provided with a simple structure. However, when the present invention has been studied, it has been found that there is room for improvement. For example, in Patent Document 1, the left and right ends of the front plate are positioned substantially the same as the outer surface of the side plate. However, when a guide rail such as a suspension system is attached to the side surface of the side plate, A problem was found that a large space was left between the side and the front plate.

  The present invention has been made to improve the current situation.

Drawer of the present invention, comprise a body stood up front plate and the rear plate and the right and left side plates from four sides of the bottom plate in plan view a square, and a back plate arranged on the back side of the front plate of the body, said body Consists of a single metal plate .

The front SL front plate, while the pull tab frame is formed upper piece retrospective bending the upper end with is empty pull hole is fitted from the front, the back plate is not disposed below said upper piece A space in which the handle frame is fitted between the front plate and the back plate is vacant, and left and right end portions of the front plate and the upper piece provided on the front plate protrude from the left and right sides of the side plate. Thus, the side cover pieces facing backward are integrally formed at the left and right ends of the front plate to form a projecting portion in which both ends are closed by the side cover pieces.

Further, by cutting the lower end portion of the side lid piece in the projecting portion along a line inclined rearward in a side view, the lower end portion of the side lid piece is formed with a triangular notch in side view, Guide rails extending in the front-rear direction are attached to the outer surfaces of the left and right side plates so as to be hidden by the overhanging portion when viewed from the front, and an auxiliary piece that closes the notch of the side lid piece at the front end of the guide rail. The bend is formed.

The present invention also includes a method for producing a metal drawer. That is, this manufacturing method is the manufacturing method of the metal drawer described in claim 1 as described in claim 2 , wherein the front plate, the left and right side plates, and the rear plate are bent upward from the side plates. In forming the main body of the opening, the front side plate is first bent and raised, and then the unique side plate is bent and raised.

The present invention includes a storage fixture provided with the drawer according to claim 1 as described in claim 3 . The storage fixture here means a fixture that has at least one drawer and has a storage function, and includes various items such as cabinets, desks, counters, register stands, and wagons.

  The present invention can be further expanded. For example, as in Patent Document 1, protrusions protruding inwardly on the left and right side plates can be provided, and slits on which the partition plate can be attached and detached can be formed on the protrusions. It is also possible to fold the upper piece of the front plate back into a two-ply shape. It is also possible to attach a lock using the space between the front plate and the back plate. The dead bolt of the lock may penetrate the upper plate and protrude upward, or may protrude left or right.

  It is also possible to provide a latching claw that engages and engages with an engaging portion of a main body such as a cabinet by pushing in one or both of the left and right projecting portions. In this case, when pulling out the drawer, a lever (pull) for detaching the latch claw from the engaging portion is required. However, this lever may be provided inside the pull frame.

  Providing a protruding part at the front end of the drawer as in the present invention prevents a large gap from being generated between the left and right end surfaces of the front plate and the furniture main body such as a cabinet even if guide rails are provided on the outer surface of the side plate. it can. For this reason, deterioration of the aesthetics of furniture can be prevented. Moreover, it is also possible to arrange the left and right projecting portions of the front plate in front of the left and right side plates of the furniture body. For this reason, the freedom of design of furniture can also be improved.

  In addition, since the outer surface of the overhanging portion is constituted by a side lid piece, even if a person touches the overhanging portion with the drawer opened, the hand is not injured and is excellent in safety. The appearance is also good. Furthermore, it is possible to weld the side lid piece and the auxiliary piece by spot welding or the like, and this makes it possible to significantly improve the strength of the drawer.

In the embodiment, the handle frame is provided with a flange that overlaps the front surface of the front plate outside the handle frame hole, and the back plate is fixed to the rear surface of the handle frame with a screw. Since the head is not exposed in front of the front plate, it is excellent in aesthetics. Further, since the drawer cannot be removed by an operation from the front side, a high anti-theft property can be secured in a state where the drawer is pushed into a main body such as a cannet and locked. Moreover, since the handle frame is covered from behind by the back plate, the aesthetics are not deteriorated by the exposure of the handle frame with the drawer opened. Furthermore, even if there is a hole in the front and rear openings in the handle frame, the hole is blocked by the back plate, so it is not possible to access the internal items from the hole in the handle frame. Yes.

Now, the metal plate can be bent by moving the pressing and bending die downward or upward while holding the workpiece with the holding die. However, the holding plate and the pressing and bending die are divided into multiple parts, and the workpiece can be swung or moved. There is a universal bending device that can perform a series of complicated bending processes while making it, and in this universal bending device, the tip of the presser type often has a wedge shape with a thin tip as viewed from the side.

And, when the notch is provided in the lower end portion of the side cover piece as in the present invention , the lateral width dimension of the drawer is used to bend the front plate from the bottom plate using the presser die having the wedge shape formed as described above. Since a presser mold having a larger lateral width can be used, a general-purpose presser mold can be used. As a result, bending can be performed with a single universal bending apparatus, and processing costs can be reduced.

When the side cover piece is formed with a notch, the notch becomes a horizontal hole. However, in the present invention , the notch is formed on the guide rail and is closed by the auxiliary piece. However, since the guide rail is used to close the notch, an increase in cost can be suppressed.

Further, by adopting the method of claim 2, since the main body having the overhanging portion can be accurately processed in series using the universal bending apparatus, it is possible to contribute to cost reduction and accuracy improvement.

(A) is an external perspective view of the cabinet to which the drawer of the embodiment is applied, (B) is a schematic perspective view of the drawer, and (C) is a partial sectional view showing the all-lock means. It is a separation perspective view of a drawer. It is an isolation | separation perspective view which shows the attachment structure of a handle frame. (A) is a perspective view which shows one side part of drawer | drawer, (B) is a perspective view of the state which isolate | separated the guide rail. (A) is a partial perspective view of the drawer viewed from the inside, (B) is a longitudinal side view of the front of the drawer, (C) is a perspective view showing the relationship between the front plate and the side plate, and (D) is a side plate. It is a perspective view which shows the relationship with a rear plate. It is an expanded view of a main body. It is a figure which shows other embodiment.

(1). Outline of Cabinet in First Embodiment Next, an embodiment of the present invention will be described based on the drawings. First, a first embodiment (main embodiment) shown in FIGS. 1 to 6 will be described. This embodiment is applied to the cabinet 1 shown in FIG. The cabinet 1 is an example of a storage fixture, and four drawers 5, 6, 7 are arranged in a front-rearly movable body having left and right side plates 2, a back plate 3, and a top plate 4 so as to be movable back and forth. Yes. First, the outline of the cabinet 1 will be described.

  As shown in FIG. 1A, among the four drawers 5 to 7, the second and third drawers 6 from the top have the same height, and the heights are the second and third stages. Drawer 6> upper drawer 5> lower drawer 7. Of course, the height of the drawer can be arbitrarily set. For example, all the stages can be set to the same height.

  The top plate 4 of the cabinet 1 can be flipped up around its rear end. Therefore, the second and subsequent drawers 6 and 7 are provided with a handle frame 8 on the front surface thereof, but the upper drawer 5 is not provided with a handle frame 8 (of course, the upper drawer 5 is also provided with a handle frame 8. It is possible to provide it.)

As shown in FIG. 1 (C), the left and right intermediate portions of the rear surface of each drawer 5-7, whereas there is provided a stopper 9 which is open vertically, the left and right substantially middle portion of the back plate 3 in the cabinet 1, heaven A lock rod 10 that is lifted by the flip-up rotation of the plate 4 is mounted so as to freely move up and down, and the lock rod 10 is provided with a hook-shaped lock body 11 that fits into and out of the stoppers 9 of the drawers 5 to 7. ing.

Thus, each drawer 5-7 can not be drawn not to rotate springing up the top plate 4 of the cabinet 1. Of course, the top plate 4 may be fixed like a normal cabinet. When the top plate 4 is of an openable / closable type as in this embodiment, a fixed tray may be arranged instead of providing the drawer 5 on the upper stage.

(2). Drawer Structure Next, the drawer structure will be described. Here, the second and third drawers 6 will be described. For example, as shown in FIG. 2, the drawer 6 is made of a steel plate. The bottom plate 13 has a rectangular shape in plan view, the front plate 14 rises from the front end of the bottom plate 13, the rear plate 15 rises from the rear end of the bottom plate 13, and the bottom plate 13. It has a side plate 16 rising from the left right end , and these constitute the main body of the drawer 6. A groove-type guide rail 17 that opens outward is fixed to the lower portion of the outer surface of the side plate 16 by spot welding.

  Two positioning holes 18 are formed in a portion near the front end and a portion near the rear end of the side plate 16, while a positioning projection 19 that fits in the positioning hole 18 is bulged on the guide rail 17. For this reason, the guide rail 17 is accurately positioned and high mounting strength is ensured.

On the upper ends of the side plate 16 of the rear plate 15, the edge pieces 15a of the folded returned narrow outwardly, 16a are formed by hemming. The edge pieces 15a and 16a may be folded back inward. The side plate 16 and the rear plate 15 have the same height and are slightly lower than the height of the front plate 14.

  For example, as shown in FIG. 3, a front side horizontally elongated handle hole 20 is formed in the left and right intermediate portion of the front plate 14, and a handle frame 21 is fitted into the handle hole 20 from the front. In addition, a rearwardly facing upper piece 22 is formed at the upper end of the front plate 14 and a downward lip 23 is provided at the rear end of the upper piece 22, thereby forming an open space backward in the front part of the main body. The place is covered with a back plate 24 from behind.

  Upper and lower horizontal pieces 24 a and 24 b that are in contact with the front plate 14 are provided at the upper and lower ends of the back plate 24, so that a closed space is formed between the front plate 14 and the back plate 24. The rear surface of the back plate 24 and the rear surface of the downward lip are substantially flush with each other.

Pull frame 21 includes a base body 25 which is forward opened in right and left horizontally, is composed of a cap 26 mounted on the left right end surface, has a laterally long rectangular shape in front view. A long groove 27 is formed on the upper and lower surfaces of the base body 25 so as to extend over the entire length of the left and right sides. The pin 26 provided on the cap 26 is fitted into the long groove 27 so that the cap 26 is positioned with respect to the base body 25. Has been. The base body 25 is an extruded product of metal or resin, and the cap 26 is a molded product of metal or resin. It is also possible to manufacture the handle frame 21 as an integral part of resin or metal.

  A flange 29 projecting outward is provided on the four circumferences of the handle frame 21, and a screw 30 inserted from the back into the back plate 24 is inserted into the female screw hole of the cap 26 with the flange 29 in contact with the front surface of the front plate 14. 31 is screwed. Therefore, the front plate 14 is sandwiched from the front and rear by the handle frame 21 and the back plate 24, whereby the handle frame 21 and the back plate 24 are firmly fixed in a state without backlash.

  The upper end of the portion of the handle frame 21 that protrudes behind the front plate 14 is higher than the lower end of the downward lip 23 and the upper horizontal piece 24 a of the back plate 24. Therefore, for example, as shown in FIG. 3, the upper horizontal piece 24a of the back plate 24 has a notch 24c so that the handle frame 21 does not hit.

  As shown in FIG. 5B, the inside of the base body 25 constituting the handle frame 21 is a bag-like space, and a lever portion 25a on which a person puts a finger protrudes downward on the upper portion and the front portion. Yes. Since the flange 29 is formed on the entire circumference of the pull frame 21, the flange 29 is formed on the upper and lower ends of the main body 21, the upper and lower ends of the cap 26, and the outer surface.

  For example, as shown in FIG. 4 and FIG. 5, the left and right end portions of the front plate 14, the upper piece 22, and the downward lip 23 protrude to the left and right outer sides of the side plate 16. The hollow overhang | projection part 33 located in the left-right outer side of 16 is formed. Further, the front plate 14 is formed with a side lid piece 34 constituting the side surface of the overhanging portion 33 so as to protrude rearward. At the tip of the side lid piece 34, the downward lip 23, the guide rail 17, The back piece 35 located at a height between the two is bent inward.

  The lower end portion of the side lid piece 34 is cut along a line inclined rearward with respect to the vertical line when viewed from the side. For this reason, the lower end of the side lid piece 34 has a notch 34a having a right triangle shape when viewed from the side. Is formed. The lower end of the notch 34 a is located slightly above the fold line between the front plate 14 and the bottom plate 13.

  Further, a first auxiliary piece 36 located below the back piece 35 is bent outward at the front end of the guide rail 17, and a first auxiliary piece 36 is overlapped with the inner surface of the side lid piece 34 at the tip. 2 The auxiliary piece 37 is bent so as to protrude toward the front. The downward lip 23, the back piece 35, and the first auxiliary piece 36 are designed to be substantially flush with each other. For this reason, the overhang | projection part 33 has the hollow structure where the whole was closed. In addition, without providing the back piece 35 on the side lid piece 34, the first and second auxiliary pieces 36 and 37 provided on the guide rail 17 are extended upward so as to be in contact with or close to the downward lip 20. You may let them.

The upper end portion of the side plate 16 and the downward lip 23 are fixed by welding 38 (see FIG. 4). Further, forward lips 39 that overlap the outer surface of the side plate 16 are projected forward from the left and right ends of the rear plate 15, and the front lip 39 and the side plate 16 are fixed by spot welding. Therefore, the downward lip 23, the side plate 16 and the rear plate 15 are integrated by welding, whereby the drawer 6 has a robust structure. Note that the side lid piece 34 provided on the front plate 14 and the second auxiliary piece 37 provided on the guide rail 17 can be fixed by spot welding.

  FIG. 6 shows a developed view of the main body. The material plate is punched out to produce the unfolded intermediate plate, and the main body is constructed by bending the material plate and then welding it. Then, the guide rail 17 is welded to the main body and the handle frame 21 and the back surface are formed. The drawer 6 is completed by screwing the plate 24.

  Bending from the unfolded state can be performed by transfer using a plurality of press devices or by exchanging dies using a single press device. If you use a universal bending machine equipped with a presser mold and a press-bending mold, all the bending work can be done with a single device by holding the intermediate plate on the table and bending it while horizontally turning and moving it. Since it can be performed in series, it has the advantage of being excellent in cost, efficiency, and processing accuracy.

  Even when the universal bending apparatus is used, there are several bending procedures. For example, (a) bending of the edge pieces 16a and 15a of the side plate 16 and the rear plate 15 and (b) the rear plate 15 are performed. (C) bending of the downward lip 20 on the front plate 14, (d) bending of the upper piece 22 on the front plate 14, (e) bending of the back piece 35 on the front plate 14, f) Procedures for bending the side cover piece 34 on the front plate 14, (g) bending the front plate 14, (h) bending the side plate 16, and (i) bending the rear plate 15. You can do it.

  In the present embodiment, the order of bending of the front plate 14 → the bending of the side plate 16 → the bending of the rear plate 15 is indispensable. There are no particular restrictions. For example, bending of the top and bottom and side portions of the front plate 14 → bending of the edge piece 16 a in one side plate 16 → bending of the edge piece 16 a in the other side plate 16 → bending of the edge piece 15 a of the rear plate 15 → Bending and raising of front plate 14 → Bending and raising of one side plate 16 → Bending and raising of the other side plate 16 → Bending and raising of the rear plate 15 are also possible.

In the bending raising process of the front plate 14, a presser die 40 indicated by a one-dot chain line in FIG. 4B is used. That is, the bottom plate 13 (more precisely, the portion corresponding to the bottom plate 13 of the intermediate plate) is pressed against the table by the presser mold 40, and the portion corresponding to the front plate 14 is pushed upward by the pressing and bending die (not shown). Thus, the front plate 14 is bent.

  The front end portion of the presser mold 40 is formed in a wedge shape having a tapered front end when viewed from the side, so that the front end portion of the presser mold 40 fits into the cutout of the side lid piece 34. It has become. Therefore, even if the lateral width of the presser mold 40 is larger than the lateral width of the front plate 14, the front plate 14 can be bent without trouble.

Further, since the front plate 14 is bent and raised before the side plate 16 is bent, the front plate 14 can be bent and raised without any problem while being held by the presser mold 40. A similar presser mold is used for bending the side plate 16 , but since the rear plate 15 is not bent at the stage where the side plate 16 is bent , the bending of the side plate 16 is caused by the depth of the bottom plate 13. This can be done using a presser mold with a length longer than the dimensions. The bending of the rear plate 15 is performed using a presser mold having a left and right length that fits between the left and right side plates 16.

(3). Other Embodiments FIG. 7 shows another embodiment. Of these, (A) to (C) show the relationship between the front plate 14 and the back plate 24, and (A) shows only the upper piece 22 facing backward at the upper end of the front plate 14, (B) Is a structure in which the upper piece 22 is folded to form a two-layer structure, and (C) is an auxiliary piece 41 that is inclined upward at the lower end of the downward lip 23.

  In the example shown in FIG. 7D, the head 30 a of the screw 30 is prevented from protruding into the inside of the drawer 6 by projecting the recess 42 into which the head 30 a of the screw 30 enters the back plate 24. . (E) shows another example of the back plate 24, which includes left and right foot pieces 24d in addition to the upper and lower horizontal pieces 24a and 24b. When the left and right foot pieces 24d are provided, either one or both of the upper and lower horizontal pieces 24a and 24b may be eliminated.

  In the example shown in FIG. 7F, the front end portion of the side plate 16 is set so as to abut or approach the front plate 14 except for the lower portion thereof. For this reason, the downward lip 20 has a downward opening groove 43 into which the side plate 16 is fitted. Although the edge piece 16 a of the side plate 16 does not reach the groove 43, the edge piece 16 a may extend to the front end of the side plate 16. Further, if the lower end portion of the groove 43 (or the entire groove 43) is formed in a downwardly tapered shape, there is an advantage that the side plate 16 can be smoothly fitted when the front plate 14 is raised.

  Further, in the embodiment of FIG. 7 (F), a contact piece 44 that overlaps the outer surface of the side plate 16 protrudes backward at the tip of the back piece 35 provided on the side lid piece 34 of the front plate 14. By spot welding the contact piece 44 and the side plate 16, the build-up welding 38 between the downward lip 23 and the side plate 16 can be eliminated, so that high strength can be ensured while being excellent in aesthetics.

  In the example shown in FIG. 7G, the protruding portion 33 of the drawer 6 is disposed in front of the side plate 2 in the cabinet 1. The present invention can be applied to this type of cabinet while the drawer 6 is made of a single metal plate.

  The present invention can be embodied in various ways other than the above-described embodiment. For example, the left and right width, depth, depth, and the like of the drawer can be arbitrarily set as necessary. The handle frame and the back plate may be made of resin.

  The present invention is actually applicable to drawers. Therefore, it can be used industrially.

DESCRIPTION OF SYMBOLS 1 Cabinet as an example 5-7 Drawer 13 Bottom plate of main body 14 Front plate of main body 15 Rear plate of main body 16 Side plate of main body 17 Guide rail 21 Pull handle frame 24 Back plate 33 Overhang part of front part of drawer 34 Side cover Piece 34a notch 35 back piece 37 second auxiliary piece to block the notch

Claims (3)

A body stood up front plate and the rear plate and the right and left side plates from four sides of the bottom plate in plan view a square, comprise a back plate arranged on the back side of the front plate of the body, said body a metal plate Consists of
The front plate has a handle hole into which a handle frame is fitted from the front and an upper end is bent at the upper end, and the back plate is disposed below the upper piece. There is a space in which the handle frame is fitted between the front plate and the back plate, and
The left and right ends of the front plate and the upper piece provided on the front plate are protruded to the left and right sides of the side plate, and the side lid pieces facing backward are integrally bent at the left and right ends of the front plate. a structure that not make a projecting portion which is closed by the side lid piece,
While cutting the lower end of the side lid piece in the overhang part along a line inclined backward in side view, while forming a notch that is triangular in side view at the lower end of the side lid piece,
Guide rails extending in the front-rear direction are attached to the outer surfaces of the left and right side plates so as to be hidden by the overhanging portion when viewed from the front, and the front end of the guide rails covers the notches of the side lid pieces. Bending the piece,
Metal drawer. A method for manufacturing a metal drawer according to claim 1,
In forming the main body of the upward opening by bending the front plate, the left and right side plates and the rear plate from the side plate, bending of the specific side plate is performed after bending the front plate first.
Manufacturing method of metal drawers. A storage fixture comprising the drawer according to claim 1.

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