JP2017194083A - Metal plate connection structure, drawer and cabinet - Google Patents

Abstract

The present invention provides a drawer capable of effectively preventing rattling between a front plate, a drawer body and a back plate. A drawer according to the present invention has a crank shape provided in a piece-like crimped portion 11b provided in a first connecting portion 11 of a front plate 10 and a second connecting portion 21 of left and right side plates 20A, 20B. And a notch groove 21a. A first abutting portion (211) that abuts against one surface of the caulking portion 11b is formed on one end side of the notch groove 21a. A second abutting portion (212) that abuts against the other surface of the caulking portion 11b is formed on the other end side of the notch groove 21a. The caulking portion 11b is inserted into the notch groove 21a and bent while being sandwiched between the first contact portion (211) and the second contact portion (212). [Selection] Figure 6

Description

  The present invention relates to a coupling structure of a plurality of metal plates constituting a fixture, a metal drawer to which the coupling structure of the metal plates is applied, and a cabinet provided with the drawer.

  In the patent documents 1 and 2, the present applicant proposes a drawer that can be manufactured simply by bending a metal plate. The drawers of Patent Documents 1 and 2 include a front plate and a drawer body. The drawer body of Patent Document 1 includes left and right side plates, a bottom plate, and a back plate made of one metal plate. The drawer body of Patent Document 2 includes left and right side plates and a bottom plate made of one metal plate. The back plate of Patent Document 2 is composed of a metal plate different from the drawer body. The back plate of Patent Document 2 is coupled to the left and right side plates and the bottom plate of the drawer body.

1. Coupling of Front Plate and Left and Right Side Plates Two first connecting portions are formed on the front plate. Second connecting portions are respectively formed on the left and right side plates. The first connecting portion is provided with a first notch and a caulking portion. On the other hand, a second cutout groove is provided in the second connecting portion. The first notch is engaged with the second notch. The caulking portion is bent in a state where the first notch groove and the second notch groove are engaged. The crimped portion that is bent contacts the back sides of the left and right side plates. Thereby, the engagement state of the first notch groove and the second notch groove is maintained.

2. Coupling of Back Plate and Left and Right Side Plates The drawer body of Patent Document 1 has a configuration in which a back plate is coupled to a bottom plate. Connecting portions are provided on the left and right sides of the back plate, respectively. Each connecting portion has a configuration in which the metal plates on both the left and right sides of the back plate are bent forward. On the upper side of the connecting portion, a notch groove extending in the vertical direction and a rectangular engagement hole are provided side by side in the horizontal direction. Such a connecting portion overlaps the rear outside of the left and right side plates. On the other hand, on the rear side of the left and right side plates, a projecting piece protruding in the horizontal direction and a caulking portion that can be bent outward are provided. The protruding piece is inserted into the cutout groove of the connecting portion. The caulking portion is bent in a state where the protruding piece is inserted into the notch groove. The bent crimping portion engages with the engagement hole of the connecting portion. Thereby, the insertion state of a protrusion and a notch groove is maintained.

3. Combination of Back Plate, Left and Right Side Plates, and Bottom Plate The drawer body of Patent Document 2 has a configuration in which the back plate is coupled to the bottom plate. Upper engaging protrusions are provided on the upper left end and the upper right end of the back plate, respectively. A pair of lower engaging projections are provided on the left and right sides of the bottom side of the back plate. On the other hand, upper engagement grooves are respectively provided at the uppermost ends of the left and right side plates. Further, a pair of left and right lower engaging grooves are provided at the rearmost surface of the bottom plate. The upper engaging protrusions of the back plate are inserted into the upper engaging grooves of the left and right side plates. The lower engagement protrusion of the back plate is inserted into the lower engagement groove of the bottom plate.

JP 2013-180108 A JP 2013-183908 A

1. FIG. 16A is a perspective view showing a process of bending the crimping portion using the jig 2. FIG.16 (b) is a rear view which shows the state before the bending of the conventional crimping part 111b. FIG.16 (c) is a rear view which shows the state after the bending of the conventional crimping part 111b.

  As shown in FIG. 16 (b), the conventional caulking portion 111b has a very small area. For this reason, the operator requires time and effort to align the tip of the jig 2 with the small crimping portion 111b, and the crimping portion 111b cannot be bent easily and quickly.

  As shown in FIG. 16C, the crimped portion 111 b that is bent comes into contact with the vertical plate surface 121 b of the connecting portion 121 of the left and right side plate 120. However, the conventional caulking portion 111b abuts on the free end side of the vertical plate surface 121b. For this reason, when an impact is applied to the drawer, the vertical plate surface 121b may be deformed outward with the caulking portion 111b as a fulcrum. The outward deformation of the vertical plate surface 121b prevents the crimping portion 111b from coming into contact, and causes the front plate 110 to become loose. The backlash of the front plate 110 impairs the quality of the product.

  FIG. 17A shows a punching die 3 for providing a notch groove in a metal plate. The punching die 3 includes a male die 3A and a female die 3B. The male mold 3A requires a certain thickness or more in order to obtain durability that can be used for mass production. For this reason, as shown in the enlarged view of FIG. 17D, the width w of the notch groove 121a of the left and right side plates 120 cannot be made as small as the plate thickness t of the front plate 110. As a result, rattling may occur due to the deformation of the front plate 110. For example, when the drawer shown in FIG. 17 (b) is further drawn out from the fully open state, the connecting portion 111 of the front plate 110 is deformed as shown in FIG. 17 (c). The front plate 110 in which the connecting portion 111 is deformed rattles in the front-rear direction within the range of the width w of the notch groove 121a shown in FIG.

2. FIG. 18 shows a connection structure between the back plate 130 and the bottom plate 120C in the drawer of Patent Document 2. In the drawer of Patent Document 2, the width w of the lower engagement groove 125a of the bottom plate 120C is larger than the thickness t of the lower engagement protrusion 131 of the back plate 130. For this reason, the back plate 130 rattles in the front-rear direction within the range of the width w of the lower engagement groove 125a.

3. Problems relating to the connection between the back plate and the left and right side plates Although not shown, even in the connection between the back plate and the left and right side plates in Patent Document 1, back and forth rattling may occur in the back plate. That is, the protruding pieces on the left and right side plates are inserted into the notch grooves on the back plate. For this reason, the notch groove of the back plate has to be slightly larger than the protruding pieces of the left and right side plates in consideration of manufacturing errors. A slight gap between the notch groove and the projecting piece causes backlash in the back and forth direction.

  Furthermore, if the back plate is coupled to the bottom plate as in Patent Document 1, the metal plate that is the material of the drawer body is wasted. FIG. 4 of Patent Document 1 is a development view showing a drawer body including left and right side plates, a bottom plate, and a back plate. As shown in this development view, a metal plate having a relatively large area is punched at two locations on both the left and right sides of the back plate to become a waste material.

4). Object of the present invention The present invention has been made in view of the above problems, and aims to solve the following technical problems.
First, rattling of components (for example, a front plate and a back plate) made of a metal plate is effectively prevented.
Second, it facilitates the joining of the components made of metal plates. For example, the caulking portion of the front plate can be easily bent using a jig or a tool. The back plate can be joined to the drawer body manually without using a jig or tool.
Thirdly, the waste of the metal plate that is the material of the component (for example, the drawer body) is reduced.

(1) In order to achieve the above object, the first metal plate joining structure of the present invention is a joined structure of a plurality of bent metal plates, and one metal plate and another metal joined together. The one metal plate is provided with a piece-like caulking portion continuous with the one metal plate via a bendable base, and the other metal plate has one end side and A crank-shaped cutout groove that is displaced with respect to the other end side is provided, and an opening for inserting the caulking portion into the groove is formed on one end or the other end of the cutout groove, A first abutting portion that abuts on one surface of the caulking portion is formed on one end side of the notch groove, and a second contact that abuts on the other surface of the caulking portion on the other end side of the notch groove. A contact portion is formed, and the caulking portion is inserted into the notch groove and is sandwiched between the first contact portion and the second contact portion , It is folded around the base.

(2) Preferably, in the metal plate coupling structure according to (1), the difference in position between the first contact portion and the second contact portion is made smaller than the plate thickness of the caulking portion.

(3) In order to achieve the above object, the second metal plate coupling structure of the present invention is a coupling structure of a plurality of bent metal plates, and one metal plate and another metal coupled to each other. A plurality of projecting pieces that are continuous with the plate surface of the one metal plate, and one side of the other metal plate is provided on one side of the one metal plate. A connecting portion formed by bending the plate surface at a right angle is formed, and a plurality of insertions having a substantially L-shaped cross section continuous from the plate surface of the other metal plate to the plate surface of the connecting portion are formed in the bent portion of the connecting portion. A hole is provided, and each insertion hole includes a first portion that opens to the plate surface of the other metal plate, and a second portion that opens to the plate surface of the connecting portion, and the insertion portion extends in the short direction of the second portion. The width is larger than the width of the first portion in the short direction, and the thickness of the connecting portion is different from the width of the first portion in the short direction. The remaining width obtained by subtracting the smaller than the thickness of the projecting piece, the protrusion of the one metal plate is inserted into the insertion holes of the other metal plate.

(4) In order to achieve the above object, the third metal plate joining structure of the present invention is a joined structure of a plurality of bent metal plates, one metal plate and another metal being joined together. A plurality of projecting pieces that are continuous with the plate surface of the one metal plate, and an outline of the projecting piece is continuous with one side of the one metal plate. The other metal plate includes an insertion hole having a longitudinal width corresponding to the protruding piece, and the other metal plate in the longitudinal direction of the insertion hole. And a bent portion for expanding and contracting the metal plate. When the bent portion is deformed, the other metal plate is extended, and the protruding piece is inserted into the insertion hole.

(5) In order to achieve the above object, a first drawer of the present invention is a drawer formed by combining a plurality of bent metal plates, the front plate serving as the front surface of the drawer, A drawer main body including at least left and right side plates and a bottom plate of the drawer, and the front plate is made of one metal plate, and the left and right sides of the one metal plate are bent to form a vertical plate surface. A pair of first connecting portions are formed, the drawer body is made of another metal plate, and the left and right side plates and the bottom plate are formed by bending the left and right sides of the other metal plate, The upper sides of the left and right side plates are bent to form a pair of second connecting portions in which a horizontal plate surface and a vertical plate surface are continuous, and the vertical plate surfaces of the first connecting portions are bent. Through the possible base to the plate surface A continuous piece-like caulking portion is provided, and a horizontal plate surface of each second connecting portion is provided with a crank-shaped notch groove in which the positions of the one end side and the other end side are shifted. An opening for inserting the caulking portion into the groove is formed at one end or the other end, and a first abutment that abuts one surface of the caulking portion at the one end side of the notch groove. A second abutting portion is formed on the other end side of the notched groove, and the caulking portion is inserted into the notched groove, and In a state of being sandwiched between the one abutting portion and the second abutting portion, it is bent around the base portion.

(6) Preferably, in the drawer of (5) above, the difference in position between the first contact portion and the second contact portion is made smaller than the plate thickness of the caulking portion.

(7) Preferably, in the pulling out of the above (5) or (6), a part of the contour of the caulking portion abuts on the back side of the vertical plate surface of the second connecting portion.

(8) In order to achieve the above object, the second drawer of the present invention is a drawer formed by combining a plurality of bent metal plates, the back plate serving as the back surface of the drawer, A drawer body including at least left and right side plates and a bottom plate of the drawer, and the back plate is made of one metal plate, and one side of the one metal plate is continuous with the plate surface of the one metal plate. A plurality of projecting pieces, the drawer body is made of another metal plate, and the left and right side plates and the bottom plate are formed by bending the left and right sides of the other metal plate, and the bottom plate On one side of the face plate, a connecting portion is formed by bending the plate surface of the other metal plate at a right angle, and the bent portion of the connecting portion is formed from the plate surface of the bottom plate to the plate surface of the connecting portion. A plurality of continuous insertion holes having a substantially L-shaped cross section are provided. The hole is composed of a first portion that opens to the plate surface of the bottom plate and a second portion that opens to the plate surface of the connecting portion, and the width of the second portion in the short direction is shorter than that of the first portion. The remaining width obtained by subtracting the plate thickness of the connecting portion from the width in the short direction of the first portion is smaller than the plate thickness of the protruding piece, and each protruding piece of the back plate is It is inserted into each insertion hole of the metal plate of the bottom plate.

(9) In order to achieve the above object, a third drawer of the present invention is a drawer formed by combining a plurality of bent metal plates, the back plate serving as the back surface of the drawer, A drawer body including at least left and right side plates and a bottom plate of the drawer, and the back plate is made of one metal plate, and one side of the one metal plate is continuous with the plate surface of the one metal plate. A plurality of projecting pieces, and the contour of the projecting piece includes a vertical portion that continues to one side of the one metal plate and an inclined portion that continues to the vertical portion, and the drawer main body is made of another metal. The left and right side plates and the bottom plate are formed by bending the left and right sides of the other metal plate, and the left and right side plates have a longitudinal width corresponding to the protruding pieces. Insertion hole and other metal plate extend and contract in the longitudinal direction of the insertion hole A bent portion is provided for, by the bent portion is deformed, in a state where the right and left side plates is extended, the projecting piece is inserted into the insertion hole.

(10) In order to achieve the above object, the cabinet of the present invention includes the drawer according to any one of the above (5) to (9).

  According to the present invention, rattling of a component made of a metal plate is effectively prevented.

  In the first coupling structure of the present invention, a caulking portion provided on one metal plate (for example, a front plate) is inserted into a crank-shaped cutout groove provided on another metal plate. The crank-shaped notch groove sandwiches the caulking portion between the first contact portion and the second contact portion. Thereby, even if one metal plate is deformed by receiving an impact, rattling does not occur between the caulking portion and the notch groove.

  In the second coupling structure of the present invention, a protrusion provided on one metal plate (for example, a back plate) is inserted into an insertion hole provided in a connecting portion of another metal plate (for example, a bottom plate). Is done. The width of the insertion hole in the short direction is smaller than the plate thickness of the protruding piece. For this reason, the projecting piece is inserted obliquely into the insertion hole. Thereafter, the one metal plate is rotated in the direction of the connecting portion with the protruding piece as a fulcrum. As a result, the protruding piece inserted into the insertion hole generates tension in the direction opposite to the connecting portion. Due to this tension, rattling does not occur between the protruding piece and the insertion hole.

  In the third coupling structure of the present invention, the protruding piece provided on one metal plate (for example, the back plate) is inserted into the insertion hole provided on the other metal plate (for example, the left and right side plates). . The other metal plate is provided with a bent portion having a substantially U-shaped cross section. Other metal plates can be expanded and contracted in the longitudinal direction of the insertion hole when the bent portion is deformed. The protruding piece is inserted into the insertion hole with the other metal plate extending. That is, tension in a direction in which the other metal plate contracts is applied to the projecting piece inserted into the insertion hole. Due to this tension, rattling does not occur between the protruding piece and the insertion hole.

  According to the present invention, it is possible to easily combine the components made of the metal plate. In the first coupling structure of the present invention, the size of the caulking portion is not limited as long as it is continuous with one metal plate (for example, a front plate) through the base portion. That is, it is possible to increase the area of the caulking portion. Since the caulking portion has a sufficiently large area as compared with the jig or tool, the bending operation of the caulking portion using the jig or tool becomes easy. Further, in the second and third coupling structures of the present invention, it is not necessary to bend the protruding piece provided on one metal plate (for example, the back plate) using a jig or a tool, and the back plate is manually operated. Can be combined with the drawer body.

  ADVANTAGE OF THE INVENTION According to this invention, the waste of the metal plate used as the material of a component (for example, drawer main body) can be reduced. That is, in the second and third coupling structures of the present invention, one metal plate (for example, back plate) is provided separately from the other metal plate (for example, drawer body). Thereby, the outline of the 1st and other metal plate in a deployment state can be made into a simple shape without a large unevenness | corrugation. As a result, the waste of the metal plate as the material is reduced.

FIG. 1 is a perspective view of a drawer according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the drawer. FIG. 3A is a rear view of the front plate. FIG. 3B is a development view of the front plate. FIG. 4 is a development view of the drawer body. FIG. 5 is a developed view of the back plate. FIG. 6 is an enlarged view showing a coupling structure between the front plate and the drawer body. FIG. 7 is an enlarged view showing a coupling structure between the front plate and the drawer body. FIGS. 8A and 8B are enlarged views showing a process of joining the front plate and the drawer body. FIGS. 9A and 9B are enlarged views showing a joining process of the caulking portion and the notch groove. Fig.10 (a) is a rear view which shows the state before a crimping part bend | folds. FIG.10 (b) is a rear view which shows the state after bending of a crimping part. FIG.10 (c) is a side view which shows the state after a crimping part bend | folds. FIG.10 (d) is a rear view which shows the contact state of the crimped part bent. FIGS. 11A to 11C are enlarged views showing a coupling state between the caulking portion and the notch groove. 12 (a) to 12 (c) are enlarged views showing a joining process between the back plate and the drawer body. FIGS. 13A to 13C are enlarged views showing a process of joining the protruding piece and the insertion hole. 14 (a) and 14 (b) are enlarged views showing the process of bending the protruding piece. FIG. 15 is a rear view showing a modified example of the left and right side plates. FIG. 16A is a perspective view showing the crimping portion bending step. FIG.16 (b) is a rear view which shows the state before the bending of the conventional crimping part. FIG.16 (c) is a rear view which shows the state after the bending of the conventional crimping part. FIG. 17A is a perspective view of a punching die for providing a notch groove in a metal plate. 17 (b) to 17 (d) are enlarged views showing a coupling state of the conventional crimped portion and the notch groove. FIG. 18 is an enlarged view showing a coupling state between a conventional projecting piece and an insertion groove.

  Hereinafter, embodiments of a drawer to which a metal plate coupling structure of the present invention is applied will be described with reference to the drawings.

1. Overall Configuration As shown in FIGS. 1 and 2, the drawer 1 according to the present embodiment includes three components: a front plate 10, a drawer body 20, and a back plate 30. The front plate 10, the drawer body 20, and the back plate 30 are each composed of a single bent metal plate. Therefore, the drawer 1 is constituted by a total of three metal plates. The front plate 10, the drawer body 20, and the back plate 30 are connected by the joint structure of the present invention without using any spot welding.

2. Front Plate A front plate 10 shown in FIGS. 2 and 3A constitutes the front surface of the drawer 1. The front plate 10 is made of a single metal plate having a shape as shown in FIG. The metal plate shown in FIG. 3B is bent toward the back side along the chain line in the drawing. Thereby, a thin box-shaped front plate 10 is formed.

2-1. First Connection Part As shown in FIG. 3A, first connection parts 11 are formed on the left and right sides of the front plate 10, respectively. The two first connecting portions 11 are formed by bending the left and right sides of one metal plate shown in FIG. 3B inward along the chain line in the drawing. As shown in FIG. 2, the two first connecting portions 11 have vertical plate surfaces facing the front ends of the left and right side plates 20 </ b> A and 20 </ b> B of the drawer body 20.

  As shown in FIG. 3A, a piece-like caulking portion 11 b is provided above the center of the plate surface of the first connecting portion 11. The contour of the caulking portion 11 b is formed by punching the plate surface of the first connecting portion 11. The caulking portion 11b continues to the plate surface of the first connecting portion 11 via a foldable base. A part of the outline of the base portion of the caulking portion 11b is formed by the first notch groove 11a in the horizontal direction. That is, unlike the conventional notch groove 111a shown in FIG. 16 (b), the first notch groove 11a of this embodiment forms the base of the caulking portion 11b and is provided at the same position as the base of the caulking portion 11b. It is done. When the front plate 10 and the drawer body 20 are connected together, the first notch groove 11a and the caulking portion 11b serve as a connection on the upper side of both.

2-2. Folded portion As shown in FIG. 3A, a folded portion 12 that covers the upper end portions of the two first coupling portions 11 is provided on the upper side of the front plate 10. The folding | returning part 12 is formed by bending the upper end part of the metal plate shown in FIG.3 (b) inward along the chain line in a figure. The left and right side portions of the folded portion 12 are respectively covered with the upper end portions of the first connecting portions 11. Thereby, for example, when the drawer 1 is pulled out from a cabinet (not shown), the deformation of the front plate 10 is prevented. On the other hand, the center part of the folding | turning part 12 corresponds between the two 1st connection parts 11, and forms a continuous plane.

2-3. Fitting space As shown in FIGS. 2 and 3A, a fitting space 13 extending in the left-right direction is formed on the lower side of the front plate 10. As shown in FIG. 3B, the fitting space 13 is formed by bending a metal plate at the lower end located between the two first connecting portions 11 inward along the chain line in the drawing. . The fitting space 13 has a substantially rectangular cross section (see FIG. 8). The metal plate that forms the fitting space 13 coincides between the two first connecting portions 11 and forms a continuous plane.

2-4. 3. Others Here, as shown in FIG. 3A, the metal plate forming the two first connecting portions 11, the folded portion 12, and the fitting space 13 surrounds a substantially rectangular concave portion opened in the center. The front end side of the drawer body 20 is inserted into the recess (see FIG. 1). The metal plate which forms the two 1st connection parts 11, the folding | returning part 12, and the fitting space 13 forms the plane which continues up and down, right and left. The plane continuous in the vertical and horizontal directions gives a beautiful appearance to the back surface of the front plate 10. As a result, the back cover provided on the conventional front plate can be omitted.

  In addition, the code | symbol 14 in FIG. 3 (a), (b) is an attachment hole of a handle (refer the chain line in FIG. 8). The handle is an optional component of the drawer 1. The front surface of the front plate 10 may be a flat design without providing the handle and the mounting hole 14. In the case where no handle is provided, the left and right side surfaces of the box-shaped front plate 10 may be a handle portion that is recessed in a stepped shape, an inclined shape, an arc shape, or the like.

3. Drawer Main Body A drawer main body 20 shown in FIG. 2 is made of a single metal plate having a shape as shown in FIG. The left and right side plates 20A and 20B and the bottom plate 20C are formed by bending the left and right sides of the metal plate shown in FIG. 4 inward along the chain line in the figure. The cross sections of the left and right side plates 20A, 20B and the bottom plate 20C are substantially U-shaped.

4). Left and Right Side Plates As shown in FIG. 2, the left and right side plates 20 </ b> A and 20 </ b> B are provided with a second connecting portion 21, a bent portion 22, an engagement piece 24 and a fourth connecting portion 26, respectively. The 2nd connection part 21 and the engagement piece 24 are connection means with the front plate 10 mentioned above. On the other hand, the bent portion 22 and the fourth connecting portion 26 are connecting means to the back plate 30 described later.

4-1. 2nd connection part As shown in FIG.2, FIG.4, the 2nd connection part 21 is formed by bend | folding the metal plate of the upper side of 20 A of right-and-left side plates 20B toward the outer side along the chain line in a figure. The The second connecting portion 21 is composed of a horizontal plate surface extending in the front-rear direction and a vertical plate surface, and has a substantially inverted L-shaped cross section. On the front end side of the second connecting portion 21, there is provided a notch groove having a substantially inverted L-shaped cross section that vertically cuts a vertical plate surface and reaches the center of the horizontal plate surface. Of the cutout groove having a substantially inverted L-shaped cross section, a portion provided on a horizontal plate surface is a second cutout groove 21 a that is engaged with the first cutout groove 11 a of the front plate 10. Such a second notch groove 21a bears the coupling on the upper side of the front plate 10 and the drawer body 20 when they are connected.

  As shown in FIGS. 9A and 9B, one end of the second notch groove 21a is opened and the other end is closed. The 2nd notch groove 21a has the crank-shaped outline from which the position of the one end side and the other end side shifted | deviated. A first contact portion 211 is formed on one end side of the second notch groove 21a. A second contact portion 212 is formed on the other end side of the second notch groove 21a. As described above, the second notch groove 21a is engaged with the first notch groove 11a of the front plate 10 (see FIG. 10A). At this time, the base of the caulking portion 11b is inserted into the groove from the opening of the second notch groove 21a. The first abutting portion 211 of the second notch groove 21a abuts on the front surface of the base portion of the caulking portion 11b. On the other hand, the second contact portion 212 of the second notch groove 21a contacts the back surface of the base portion of the crimping portion 11b. That is, the base portion of the crimped portion 11 b inserted into the second notch groove 21 a is sandwiched between the first contact portion 211 and the second contact portion 212.

  Here, in the present embodiment, as shown in FIG. 9A, the difference in position between the first contact portion 211 and the second contact portion 212 is made smaller than the plate thickness of the caulking portion 11b. It is configured. With this configuration, as shown in FIG. 9B, the base portion of the caulking portion 11 b is deformed by the first and second contact portions 211 and 212, and goes toward the first and second contact portions 211 and 212. A pressing force is generated. As a result, the coupling force between the caulking portion 11b and the second notch groove 21a is increased.

  As shown in FIGS. 10 (a) and 10 (b), the horizontal width of the horizontal plate surface of the second connecting portion 21 is such that the base portion of the caulking portion 11b extends to the other end of the second notch groove 21a. When inserted, the outer side of the caulking portion 11b is in contact with the inner side of the vertical plate surface of the second connecting portion 21. With this configuration, rattling of the front plate 10 in the left-right direction is prevented.

4-2. Engagement piece As shown in FIGS. 2 and 4, the engagement piece 24 is formed by bending the metal plate at the center of the front end of the left and right side plates 20 </ b> A, 20 </ b> B outward along the chain line in the drawing. . The engaging piece 24 is located below the second connecting portion 21 described above. The width in the front-rear direction of the engagement piece 24 is a dimension that comes into contact with the front surface (inner surface) of the first connecting portion 11 when the second notch groove 21a is engaged with the second notch groove 21a. When the front plate 10 and the drawer main body 20 are connected to each other, the engagement piece 24 is responsible for coupling at the center between the two.

4-3. As shown in FIGS. 2 and 4, the bent portion 22 is formed by bending the lower metal plates of the left and right side plates 20 </ b> A and 20 </ b> B outward along the chain line in the drawing. . The bent portion 22 has a substantially U-shaped cross section and extends in the front-rear direction. As shown in FIG. 13C, the bent portion 22 can be deformed in the vertical direction in the figure. By such deformation of the bent portion 22, the left and right side plates 20A and 20B can be expanded and contracted in the vertical direction in the figure. The technical significance of making the left and right side plates 20A and 20B extendable will be described later.

4-4. 4th connection part As shown in FIG.2, FIG.4, the 4th connection part 26 bends the metal plate of the rear end upper side of right-and-left side surface board 20A, 20B toward the inner side along the chain line in a figure. It is formed. The fourth connecting portion 26 contacts the upper side of the back surface of the back plate 30 and supports the back plate 30. The fourth connecting portion 26 is provided with a second insertion hole 26a extending in the vertical direction along the folding line. The second protrusion 32 of the back plate 30 is inserted into the second insertion hole 26a. Such a 4th connection part 26 bears the coupling | bonding in both upper sides, when connecting the backplate 30 and the drawer main body 20. FIG.

  Here, as shown in FIGS. 13A and 13B, the second insertion hole 26a and the second projecting piece 32 are provided with slight differences in their vertical positions. That is, the vertical position of the second insertion hole 26 a on the plate surfaces of the left and right side plates 20 </ b> A and 20 </ b> B is slightly shifted downward from the second projecting piece 32 of the back plate 30. As shown in FIG.13 (c), when inserting the 2nd protrusion 32 in the 2nd insertion hole 26a, the left-right side board 20A, 20B is made into an up-down direction by deform | transforming the bending part 22 mentioned above. Make it stretched. With this configuration, a tension in a direction in which the left and right side plates 20A and 20B contract is applied to the second projecting piece 32 inserted into the second insertion hole 26a. This tension prevents rattling between the second insertion hole 26a and the second protrusion 32.

5. Bottom Plate As shown in FIG. 2, the bottom plate 20 </ b> C is provided with a fitting piece 23 and a third connecting portion 25. The fitting piece 23 is a connection means with the front plate 10 described above. On the other hand, the 3rd connection part 25 is a connection means with the backplate 30 mentioned later.

5-1. Fitting piece As shown in Drawing 2 and Drawing 4, fitting piece 23 is formed by bending the metal plate of the front end part of bottom plate 20C outside along the chain line in a figure. The fitting piece 23 has a substantially L-shaped cross section and extends in the left-right direction. The fitting piece 23 has a dimension and shape that can be fitted into the fitting space 13 of the front plate 10 described above, and bears the lower side connection when the front plate 10 and the drawer body 20 are connected.

5-2. 3rd connection part As shown in FIG.2, FIG.4, the 3rd connection part 25 is formed by bend | folding the metal plate of the rear-end part of 20 C of bottom face plates inside along the dashed-dotted line in a figure. The third connecting portion 25 contacts the lower side of the back surface of the back plate 30. The third connecting portion 25 is provided with three first insertion holes 25a extending in the left-right direction along the folding line. The first protrusions 31 of the back plate 30 are inserted into the three first insertion holes 25a, respectively. Such a 3rd connection part 25 bears the coupling | bonding in the lower side of both, when connecting the backplate 30 and the drawer main body 20. FIG.

  Here, as shown in FIGS. 12A and 12B, the first insertion hole 25 a has a substantially L-shaped cross section that continues from the plate surface of the bottom plate 20 </ b> C to the plate surface of the third connecting portion 25. That is, the first insertion hole 25a includes a first portion that opens to the plate surface of the bottom plate 20C and a second portion that opens to the plate surface of the third connecting portion 25. The width of the second portion in the short direction is larger than the width of the first portion in the short direction. The remaining width obtained by subtracting the thickness of the third connecting portion 25 from the width of the first portion in the short direction is smaller than the thickness of the first protrusion 31 of the back plate 30.

  The 1st insertion hole 25a which consists of such a structure produces the tension | tensile_strength in the opposite direction to the 3rd connection part 25 in the 1st protrusion 31 inserted in this. That is, as shown in FIG. 12A, the width in the short direction of the first portion of the first insertion hole 25 a is smaller than the plate thickness of the first protruding piece 31. For this reason, the first protrusion 31 is inserted obliquely into the first insertion hole 25a. Thereafter, as shown in FIG. 12B, the back plate 30 is rotated in the direction of the third connecting portion 25 with the first protruding piece 31 as a fulcrum. As a result, the first projecting piece 31 inserted into the first insertion hole 25 a generates a tension in the direction opposite to that of the third connecting portion 25. This tension prevents rattling between the first protrusion 31 and the first insertion hole 25a.

6). Back Plate As shown in FIG. 2, the back plate 30 is provided with the three first protruding pieces 31 and the two second protruding pieces 32 described above. As described above, the first projecting piece 31 is a connecting means to the bottom plate 20C, and has a dimensional shape corresponding to the first insertion hole 25a. The 2nd protrusion 32 is a connection means with left-right side board 20A, 20B, and has a dimension shape corresponding to the 2nd insertion hole 26a.

  The back plate 30 is made of a single metal plate having a shape as shown in FIG. The first projecting piece 31 is continuously provided on the lower side of the metal plate constituting the back plate 30. Further, the second projecting piece 32 is provided continuously on the left side and the right side of the metal plate constituting the back plate 30.

  Here, as shown in FIG. 13B, the outline of the second projecting piece 32 of the present embodiment includes a vertical portion 321 that continues to the left side or the right side of the back plate 30, and an inclined portion 322 that continues to the vertical portion 321. Including. As described above, the second insertion hole 26 a is provided in the left and right side plates 20 </ b> A and 20 </ b> B that can be expanded and contracted in the vertical direction by the bent portion 22. Further, the position of the second insertion hole 26 a is slightly shifted downward from the second projecting piece 32. The inclined portion 322 of the second projecting piece 32 guides the second insertion hole 26a to the vertical portion 321 while deforming the left and right side plates 20A and 20B into an extended state. Finally, the second insertion hole 26a is locked on the vertical portion 321 of the second projecting piece 32 while receiving the tension in the direction in which the left and right side plates 20A and 20B contract (see FIG. 13C). ).

  Further, the second protrusion 32 of the present embodiment is provided with a slit 32 a located at the boundary with the back plate 30. The slit 32a reduces the rigidity of the second protrusion 32. As a result, the operator can easily bend the second protruding piece 32 manually after inserting the second protruding piece 32 into the second insertion hole 26a (see FIGS. 14A and 14B). reference).

7). Next, a method for manufacturing a drawer according to the present embodiment will be described with reference to the drawings. The drawer 1 of the present embodiment is manufactured by manually joining the front plate 10, the drawer main body 20, and the back plate 30.

7-1. Step of joining front plate and drawer body The step of joining front plate 10 and drawer body 20 will be described with reference to FIGS. As shown in FIGS. 6 and 7, the front plate 10 and the drawer body 20 are composed of a first notch groove 11 a, a caulking portion 11 b, a fitting space 13, a second notch groove 21 a, a fitting piece 23, and an engagement. Combined by pieces 24.

  First, as shown in FIG. 8A, the fitting piece 23 of the drawer body 20 is put into the fitting space 13 of the front plate 10. Next, the front plate 10 is rotated in the direction of the drawer body 20 using the rear end of the fitting piece 23 as a fulcrum. At this time, the front end sides of the left and right side plates 20 </ b> A and 20 </ b> B are curved inward from the two first connecting portions 11 of the front plate 10. Then, as shown in FIG. 8B, when the fitting space 13 and the fitting piece 23 are fitted, the front end side of the drawer body 20 is accommodated in a recess that opens in the center of the front plate 10. The

  Next, as shown in FIG. 7, the second notch grooves 21 a of the left and right side plates 20 </ b> A and 20 </ b> B are engaged with the first notch groove 11 a of the front plate 10. Then, as shown to Fig.9 (a), the base of the crimping part 11b of the front plate 10 is inserted in the 2nd notch groove 21a. As shown in FIG. 9B, the base portion of the crimping portion 11b is sandwiched between the first contact portion 211 and the second contact portion 212 of the second notch groove 21a. At this time, the base of the caulking portion 11 b is deformed by the first and second contact portions 211 and 212, and a pressing force toward the first and second contact portions 211 and 212 is generated. Thereafter, using the jig 2 shown in FIG. 16, the crimped portion 11 b is bent in the direction toward the inner side of the front plate 10. Then, as shown in FIGS. 10B to 10D, the outer side of the caulking portion 11 b comes into contact with the inner side of the vertical plate surface of the second connecting portion 21. Thereby, rattling of the front plate 10 in the left-right direction is prevented. Through the above steps, the connection between the front plate 10 and the drawer body 20 is completed.

7-2. Joining of Back Plate and Drawer Body A joining process between the back plate 30 and the drawer body 20 will be described with reference to FIGS. As shown in FIGS. 12A to 12C, the back plate 30 and the drawer body 20 are coupled by a first insertion hole 25 a, a second insertion hole 26 a, a first projecting piece 31, and a second projecting piece 32. The

  First, as shown to Fig.12 (a), the 1st protrusion 31 of the backplate 30 is inserted in the 1st insertion hole 25a provided in the 3rd connection part 25 of the bottom face plate 20C. As described above, the width in the short direction of the first portion opened to the bottom plate 20 </ b> C of the first insertion hole 25 a is smaller than the plate thickness of the first protrusion 31. Therefore, the back plate 30 is inclined with respect to the bottom plate 20C, and the first protrusions 31 are inserted obliquely into the first insertion holes 25a.

  Next, as shown in FIG. 12B, the back plate 30 is rotated in the direction of the third connecting portion 25 with the first projecting piece 31 as a fulcrum. Accordingly, the back plate 30 is in a state parallel to the plate surface of the third connecting portion 25 and is in a state perpendicular to the bottom plate 20C. At this time, the first protruding piece 31 inserted into the first insertion hole 25 a generates a tension in the direction opposite to that of the third connecting portion 25. This tension prevents rattling between the first protrusion 31 and the first insertion hole 25a. The tension generated by the first protrusion 31 is maintained by the connection between the second protrusion 32 and the second insertion hole 26a described below.

  Next, the second projecting piece 32 of the back plate 30 is inserted into the second insertion hole 26a provided in the fourth connecting portion 26 of the left and right side plates 20A, 20B. The process of inserting the second protrusion 32 into the second insertion hole 26a is shown in detail in FIGS. As described above, the second insertion hole 26 a is provided in the left and right side plates 20 </ b> A and 20 </ b> B that can be expanded and contracted in the vertical direction by the bent portion 22. Further, the position of the second insertion hole 26 a is slightly shifted downward from the second projecting piece 32.

  In such a configuration, the second protrusion 32 is inserted into the second insertion hole 26a. First, as shown in FIGS. 13A and 13B, the inclined portion 322 of the second projecting piece 32 deforms the left and right side plates 20A and 20B into the extended state, while the second insertion hole 26a is moved to the vertical portion. Guide to 321. Thereafter, as shown in FIG. 13C, the second insertion hole 26a is locked onto the vertical portion 321 of the second projecting piece 32 while receiving tension in a direction in which the left and right side plates 20A and 20B contract. . This tension prevents rattling between the second protrusion 32 and the second insertion hole 26a.

  Finally, as shown in FIGS. 14A and 14B, the second projecting piece 32 inserted into the second insertion hole 26a is bent forward. The rigidity of the second protrusion 32 is moderately reduced by the slit 32a. As a result, the operator can easily bend the second projecting piece 32 manually. Through the above steps, the connection between the back plate 30 and the drawer body 20 is completed. That is, the manufacture of the drawer 1 of this embodiment shown in FIG. 1 is completed.

8). Operational Effects According to the coupling structure applied to the drawer 1 of the present embodiment, rattling among the front plate 10, the drawer body 20, and the back plate 30 is effectively prevented.

  As shown in FIG. 9B, the caulking portion 11b provided on the front plate 10 is inserted into the crank-shaped second notch groove 21a provided on the left and right side plates 20A and 20B. The crank-shaped second notch groove 21 a sandwiches the crimped portion 11 b between the first contact portion 211 and the second contact portion 212. As a result, as shown in FIGS. 11A to 11C, even if the front plate 10 is deformed by receiving an impact, rattling is caused between the caulking portion 11b and the second notch groove 21a. Does not occur. That is, rattling between the front plate 10 and the drawer body 20 is effectively prevented.

  As shown in FIG. 10A, the first notch 11a of the front plate 10 forms the base of the crimping portion 11b and is provided at the same position as the base of the crimping portion 11b. The first notch 11a is engaged with the second notch 21a of the left and right side plates 20A and 20B. As a result, as shown in FIG. 10 (d), the crimped portion 11 b that is bent comes into contact with the position farthest from the free end inside the vertical plate surface of the second connecting portion 21. With this configuration, the vertical plate surface of the second connecting portion 21 is not deformed outward with the caulking portion 11b as a fulcrum (see FIG. 16C). That is, rattling of the front plate 10 due to deformation of the vertical plate surface of the second connecting portion 21 is effectively prevented.

  As shown in FIGS. 12A and 12B, the first protrusion 31 provided on the back plate 30 is inserted into the first insertion hole 25a provided in the third connecting portion 25 of the bottom plate 20C. . The width of the first portion opening in the bottom plate 20 </ b> C of the first insertion hole 25 a in the short direction is smaller than the plate thickness of the first protrusion 31. For this reason, the first protrusion 31 is inserted obliquely into the first insertion hole 25a. Thereafter, the back plate 30 is rotated in the direction of the third connecting portion 25 with the first protruding piece 31 as a fulcrum. As a result, the first projecting piece 31 inserted into the first insertion hole 25 a generates a tension in the direction opposite to that of the third connecting portion 25. Due to this tension, no rattling occurs between the first protrusion 31 and the first insertion hole 25a. That is, rattling between the back plate 30 and the bottom plate 20C is effectively prevented.

  As shown in FIGS. 13A to 13C, the second projecting piece 32 provided on the back plate 30 is inserted into the second insertion holes 26a provided on the left and right side plates 20A and 20B. The left and right side plates 20A and 20B are provided with a bent portion 22 having a substantially U-shaped cross section. The left and right side plates 20A and 20B can be expanded and contracted in the longitudinal direction of the second insertion hole 26a when the bent portion 22 is deformed. The second protrusions 32 are inserted into the second insertion holes 26a with the left and right side plates 20A and 20B extending. That is, the tension in the direction in which the left and right side plates 20A and 20B are contracted is applied to the second protrusion 32 inserted into the second insertion hole 26a. Due to this tension, rattling does not occur between the second projecting piece 32 and the second insertion hole 26a. That is, rattling between the back plate 30 and the left and right side plates 20A and 20B is effectively prevented.

  As shown in FIG. 10A, the size of the crimped portion 11b is not limited as long as it is continuous with the metal plate of the front plate 10 through the base portion. That is, it is possible to increase the area of the caulking portion 11b. Since the caulking portion 11b has a sufficiently wide area as compared with a jig or a tool, the bending work of the caulking portion 11b using the jig or the tool becomes easy. Furthermore, as shown in FIGS. 12A to 12C, the back plate 30 and the drawer main body 20 can be coupled only by complete manual work without using a jig or a tool.

  As shown in FIG. 2, the back plate 30 is made of a metal plate that is separate from the drawer body 20. As a result, the waste of the metal plate used as the material of the drawer body 20 can be reduced. That is, as shown in FIG. 4, the outline of the drawer body 20 in the unfolded state can be a simple shape without large irregularities. Thereby, the waste of the metal plate used as the material of the drawer body 20 is reduced.

  Note that the bent portions provided on the left and right side plates 20A and 20B are not limited to those having a substantially U-shaped cross section as shown in FIG. The bent portion may be configured to be able to expand and contract the left and right side plates 20A and 20B along the longitudinal direction of the second insertion hole 26a. For example, as shown in FIG. 15, a bent portion 27 extending in a direction (front-rear direction in the drawing) perpendicular to the longitudinal direction of the second insertion hole 26a is formed at the boundary between the left and right side plates 20A, 20B and the bottom plate 20C. It may be provided. The left and right side plates 20A and 20B can be expanded and contracted along the longitudinal direction of the second insertion hole 26a also by the bent portion 27 shown in FIG.

DESCRIPTION OF SYMBOLS 1 Drawer 10 Front plate 11 1st connection part 11a First notch groove 11b Clamping part 12 Folding part 13 Fitting space 14 Handle attachment hole 20 Drawer main body 20A Left side plate 20B Right side plate 20C Bottom plate 21 Second connection part 21a 2nd notch groove 211 1st contact part 212 2nd contact part 22, 27 Bending part 23 Fitting piece 24 Engagement piece 25 3rd connection part 25a 1st insertion hole 26 4th connection part 26a 2nd insertion hole 30 Back plate 31 First protrusion 32 Second protrusion 321 Vertical portion 322 Inclined portion 32a Slit

Claims (10)

A combined structure of a plurality of bent metal plates,
Including one metal plate and another metal plate joined together,
The one metal plate is provided with a piece-like caulking portion continuous with the one metal plate via a foldable base,
The other metal plate is provided with a crank-shaped notch groove in which the positions of the one end side and the other end side are shifted, and the caulking portion is provided in either one end or the other end of the notch groove. An opening for insertion is formed, a first abutting portion that abuts one surface of the caulking portion is formed on one end side of the notch groove, and the additional portion is formed on the other end side of the notch groove. A second abutting portion that abuts against the other surface of the tightening portion is formed;
The caulking portion is inserted into the notch groove and bent around the base in a state of being sandwiched between the first abutting portion and the second abutting portion;
A metal plate coupling structure characterized by that.   The metal plate coupling structure according to claim 1, wherein a difference in position between the first contact portion and the second contact portion is smaller than a plate thickness of the caulking portion. A combined structure of a plurality of bent metal plates,
Including one metal plate and another metal plate joined together,
On one side of the one metal plate, a plurality of projecting pieces that are continuous with the plate surface of the one metal plate are provided,
A connecting portion is formed on one side of the other metal plate by bending the plate surface of the other metal plate at a right angle. Further, the bent portion of the connecting portion is formed from the plate surface of the other metal plate. A plurality of insertion holes having a substantially L-shaped cross section that are continuous with the plate surface of the connecting portion are provided, and each insertion hole opens to the plate surface of the other metal plate and the plate surface of the connecting portion. The width of the second portion is shorter than the width of the first portion in the short direction, and the thickness of the connecting portion is subtracted from the width of the first portion in the short direction. The remaining width is smaller than the thickness of the protruding piece,
Each protruding piece of the one metal plate is inserted into each insertion hole of the other metal plate,
A metal plate coupling structure characterized by that. A combined structure of a plurality of bent metal plates,
Including one metal plate and another metal plate joined together,
On one side of the one metal plate, a plurality of projecting pieces that are continuous with the plate surface of the one metal plate are provided, and the outline of the projecting piece has a vertical portion that continues to one side of the one metal plate; And an inclined part that is continuous with the vertical part,
The other metal plate is provided with an insertion hole having a longitudinal width corresponding to the projecting piece, and a bent portion for expanding and contracting the other metal plate in the longitudinal direction of the insertion hole, When the bent portion is deformed, the other metal plate is stretched, and the protruding piece is inserted into the insertion hole.
A metal plate coupling structure characterized by that. A drawer constructed by joining a plurality of bent metal plates,
A front plate serving as a front surface of the drawer;
A drawer body including at least left and right side plates and a bottom plate of the drawer, and
The front plate is made of a single metal plate, and a pair of first connecting portions that are vertical plate surfaces are formed by bending the left and right sides of the single metal plate,
The drawer body is made of another metal plate, and the left and right sides of the other metal plate are bent to form the left and right side plates and the bottom plate, and further, the upper side of the left and right side plates is bent. By this, a pair of second connecting portions in which a horizontal plate surface and a vertical plate surface are continuous are formed,
A vertical plate surface of each first connecting portion is provided with a piece-like caulking portion continuous with the plate surface via a bendable base,
The horizontal plate surface of each second connecting portion is provided with a crank-shaped notch groove in which the positions of one end side and the other end side are shifted, and either one end or the other end of the notch groove has the above-mentioned An opening for inserting the caulking portion into the groove is formed, and a first abutting portion that abuts one surface of the caulking portion is formed on one end side of the notched groove, and the other end side of the notched groove Is formed with a second abutting portion that abuts against the other surface of the caulking portion,
The caulking portion is inserted into the notch groove and bent around the base in a state of being sandwiched between the first abutting portion and the second abutting portion;
A drawer characterized by that.   The drawer according to claim 5, wherein a difference in position between the first contact portion and the second contact portion is smaller than a plate thickness of the caulking portion.   The drawer according to claim 5 or 6, wherein a part of the contour of the caulking portion is in contact with a back side of a vertical plate surface of the second connecting portion. A drawer constructed by joining a plurality of bent metal plates,
A back plate to be the back of the drawer;
A drawer body including at least left and right side plates and a bottom plate of the drawer, and
The back plate is made of one metal plate, and one side of the one metal plate is provided with a plurality of projecting pieces continuous to the plate surface of the one metal plate,
The drawer main body is made of another metal plate, and the left and right side plates and the bottom plate are formed by bending the left and right sides of the other metal plate. A connecting portion is formed by bending the plate surface of the metal plate at a right angle, and the bent portion of the connecting portion has a plurality of substantially L-shaped cross sections continuous from the plate surface of the bottom plate to the plate surface of the connecting portion. An insertion hole is provided, and each insertion hole includes a first portion that opens to the plate surface of the bottom plate and a second portion that opens to the plate surface of the connecting portion, and the width in the short direction of the second portion. Is larger than the width of the first portion in the short direction, and the remaining width obtained by subtracting the plate thickness of the connecting portion from the width of the first portion in the short direction is smaller than the plate thickness of the protruding piece,
Each protruding piece of the back plate is inserted into each insertion hole of the metal plate of the bottom plate,
A drawer characterized by that. A drawer constructed by joining a plurality of bent metal plates,
A back plate to be the back of the drawer;
A drawer body including at least left and right side plates and a bottom plate of the drawer, and
The back plate is made of one metal plate, and one side of the one metal plate is provided with a plurality of projecting pieces that are continuous with the plate surface of the one metal plate. A vertical portion that continues to one side of the metal plate, and an inclined portion that continues to the vertical portion,
The drawer main body is made of another metal plate, and the left and right side plates and the bottom plate are formed by bending the left and right sides of the other metal plate. An insertion hole having a corresponding longitudinal width and a bent portion for expanding and contracting the other metal plate in the longitudinal direction of the insertion hole are provided, and the left and right side plates are deformed by deforming the bent portion. And the protruding piece is inserted into the insertion hole.
A drawer characterized by that.   A cabinet comprising the drawer according to any one of claims 5 to 9.