JP6030499B2 - Box with flange - Google Patents

Description

  The present invention relates to a flanged box including a box body made of a soft material and a core member provided on the flange.

  For example, a wiring device installed on a wall of a building is arranged in a wiring box on the back of the wall. In addition, a wall hole is formed in the wall with the installation of the wiring apparatus, and a flanged box having airtightness is disposed in the wall hole in order to ensure airtightness in the wall hole (see, for example, Patent Document 1). ). The flanged box has a square box-shaped box body made of a soft material (for example, butyl rubber) and a square annular contact flange extending from the open end of the box body. A hard core plate extending over the entire circumference is embedded in the contact flange.

  And when installing a wiring appliance using a box with a flange, first, while adhering the back surface of a contact flange to the periphery of the wall hole in a wall surface, a box main body is arrange | positioned in the wiring box of a wall back. Thereafter, in the instrument frame holding the wiring instrument, both end portions sandwiching the opening of the box body are brought into contact with the surface of the contact flange. Then, when the mounting screws penetrating both ends of the instrument frame are screwed into the box cover integrated with the wiring box behind the wall, the wiring instrument is placed in the flanged box and the contact flange is connected to the wall. A flanged box is placed on the wall, sandwiched by the instrument frame. Moreover, the airtightness of the wall hole is secured by the flanged box. Thereafter, a decorative cover is installed to cover the contact flange and the instrument frame.

Japanese Utility Model Publication No. 61-88417

  However, when the mounting screw is screwed into the box cover, both ends of the instrument frame are pressed against the two locations of the contact flange by the mounting screw. Then, in the contact flange, the portion where the instrument frame is pressed is pressed toward the wall, while the portion not pressed is warped or deformed by the reaction force, and the contact flange is separated from the wall. There is a possibility that airtightness cannot be secured. In order to prevent warpage and deformation of the contact flange, it is conceivable to increase the thickness of the core plate. However, as the core plate is increased, the contact flange becomes thicker and the decorative cover is lifted off the wall. It is not preferable.

  An object of the present invention is to provide a flanged box capable of bringing the entire flange into close contact with a wall without increasing the thickness of the core material.

  In order to solve the above problems, the flanged box according to claim 1 has a bottom wall and a peripheral wall erected from the bottom wall, and has an opening on one side and a wiring device inside the peripheral wall. A box body made of a soft material having an annular flange extending outward from the opening side of the peripheral wall, and a core provided on the flange. The box body is inserted into a wall hole drilled in the wall, the flange is arranged around the wall hole on the wall surface, and an instrument frame holding the wiring device is located on the opening side of the box body In the installed state, the pressed part facing the opening in the flange is pressed toward the wall, and the flange is used in a state where the instrument frame is bridged between the pressed parts With box The core member is connected to the core member pressed portion disposed on the pressed portion of the flange and pressed by the instrument frame, and the opposing core member pressed portions are connected to each other in the flange. A base portion disposed at a position sandwiching the pressed portion, and the core material is formed such that the core material pressed portion warps in a direction away from the bottom wall rather than the base portion. Is the gist.

  According to this, in order to install the wiring device on the wall, when the device frame is installed so as to be pressed against the wall, the pressed portion of the flange is pressed against the wall by the device frame, and the core pressed portion is the wall. Is pressed toward. Then, the base portion having the warp is bent and deformed in a direction in which the warp is settled by the pressing of the core pressing portion, that is, a flat plate shape, and the portion where the base portion is disposed in the flange is also bent and deformed to have a flat plate shape. To do. As a result, in the flange, the pair of pressed parts and the portion sandwiching the pressed part are pressed against the wall by the pressing force of the core member, and the entire flange is pressed against the wall. Therefore, the pressing force directed to the wall of the instrument frame is transmitted from the core material to the entire flange, preventing the deformation of the flange without increasing the thickness of the core material, and surrounding the flange around the wall hole. Can be in close contact with.

Moreover, in the box with a flange, it is preferable that the base is warped so that a portion that is equidistant from the opposed core material pressed portion is closest to the bottom wall side.
According to this, when the core member pressed portion is pressed by the instrument frame, the base portion can be bent and deformed over the entire longitudinal direction, and the flange can be pressed against the wall without deviation.

Moreover, the box with a flange WHEREIN: The said core material may be provided with two or more by the said flange.
According to this, when the pressed part of the flange is pressed toward the wall by the instrument frame, each of the base parts of the plurality of core members is flexibly deformed independently. Therefore, a pressing force is applied to the flange from each base portion of each core member, and the flange can be strongly pressed against the wall.

  According to the present invention, the entire flange can be brought into close contact with the wall without increasing the thickness of the core material.

The disassembled perspective view which shows the box with a flange, a wiring box, an instrument frame, and a wall. (A) is a front view of a box with a flange, (b) is a side view of a box with a flange, (c) is a perspective view showing a core material. The sectional side view which shows the state which installed the wiring box in the pillar. The sectional side view which shows the state which inserted the box main body in the wall hole and has arrange | positioned the flange around the wall hole. The sectional side view which shows the state which made the instrument frame hold | maintain a wiring instrument and pulled out the cable. The sectional side view which shows the state which installed the box with a flange in the wall. The front view which shows the state which installed the box with a flange in the wall.

Hereinafter, an embodiment embodying a flanged box will be described with reference to FIGS.
As shown in FIG. 1, the wall W on which the wiring device S is installed includes a column H, a pair of wall members W1 standing on both front and rear sides of the column H (the rear wall member is not shown), and It is constituted by.

Next, the wiring box 50 used for installing the wiring device S on the wall W will be described.
The wiring box 50 is formed in a bottomed square box shape having an opening on the front surface (one surface). The wiring box 50 includes a rectangular bottom plate 53, an upper plate 52 a and a lower plate 52 b that are opposed to the top and bottom of the bottom plate 53, and a right plate 52 c and a left plate 52 d that are opposed to the right and left sides of the bottom plate 53.

  Two cable insertion holes 54 are formed in the upper plate 52a and the lower plate 52b. Moreover, the boss | hub part 55 used in order to attach the wiring instrument S to the wiring box 50 is formed in the inner surface of the upper side board 52a and the lower side board 52b, respectively in the position which opposes. A female screw hole 55 a is formed in the boss portion 55. A plurality of screw holes 56 are formed in the left side plate 52d.

Next, the instrument frame 60 that holds the wiring instrument S will be described.
The appliance frame 60 has a rectangular frame shape and includes a holding hole 61 for holding the wiring appliance S. Further, screw insertion holes 62 are formed at both ends in the longitudinal direction of the instrument frame 60. Each screw insertion hole 62 is formed in a long hole shape extending in the short direction of the instrument frame 60, and a fixed screw B for attaching the instrument frame 60 to the wiring box 50 is inserted into the screw insertion hole 62. It is like that.

Next, the flanged box 10 will be described.
The flanged box 10 is made of a soft synthetic resin as a soft material. The flanged box 10 includes a box main body 20, and the box main body 20 has an opening on the surface (one surface) from a rectangular bottom wall 21 and a peripheral wall 22 erected from the periphery of the bottom wall 21. It is formed in a bottom square box shape. Further, a square annular flange 24 is formed at the opening end of the box body 20 so as to extend outward over the entire circumference of the box body 20.

  As shown in FIG. 2A, the flange 24 includes an upper flange portion 24 a and a lower flange portion 24 b that are opposed to each other in the longitudinal direction of the flange 24, and a right flange portion 24 c that is opposed to the lateral direction of the box body 20. And a left flange portion 24d. A through hole 25 is formed in each of the upper flange portion 24a and the lower flange portion 24b, and the pair of through holes 25 pass through the midpoint of the length in the short direction of the flange 24 and extend in the longitudinal direction. It is arranged on L and provided at a position sandwiching the opening of the box body 20 in the longitudinal direction. Each through hole 25 is formed in a long hole shape extending in the short direction of the flange 24. A fixing screw B inserted through a screw insertion hole 62 of the instrument frame 60 is inserted into each through hole 25.

  A pair of U-shaped core members 27 in a plan view are provided on the flange 24, and both the core members 27 are integrated with the flange 24 by insert molding when the flanged box 10 is formed. The flange 24 is formed such that the synthetic resin portion and the core material 27 portion are located on the same plane, and the front surface of the flange 24 is a smooth surface. The pair of core members 27 are provided on the flange 24 so as to sandwich the center line L in the short direction.

  As shown in FIG. 2C, each core member 27 includes an elongated plate-like base portion 28, and a core member pressed portion 29 that is connected to both ends in the longitudinal direction of the base portion 28. Each core member pressed portion 29 extends from the base portion 28 along a direction orthogonal to the longitudinal direction of the base portion 28. Each core member pressed portion 29 is formed with an L-shaped and circular recess 29a penetrating in the thickness direction. The base portion 28 is gently curved in an arc shape, and is formed in a shape that gently warps from the center in the longitudinal direction of the base portion 28 toward the core material pressed portions 29. Therefore, the core material 27 is warped (curved) in the thickness direction so that the center in the longitudinal direction of the base portion 28 is farthest from the core material pressed portions 29.

  As shown in FIG. 2A, of the two core members 27 integrated with the flange 24, one core member 27 has a base 28 integrated with the right flange portion 24c and one core member pressed. The portion 29 is integrated with a half of the upper flange portion 24a near the right flange portion 24c, and the other core member pressed portion 29 is integrated with a half of the lower flange portion 24b near the right flange portion 24c. In the other core material 27, the base portion 28 is integrated with the left flange portion 24d, the one core material pressed portion 29 is integrated with the half of the upper flange portion 24a near the left flange portion 24d, and the other The core pressed portion 29 is integrated with a half of the lower flange portion 24b near the left flange portion 24d. Each base portion 28 is integrated over substantially the entire short side direction and the entire long side direction of the right flange portion 24c and the left flange portion 24d.

  Note that synthetic resin flows into each recess 29 a of each core material 27 during insert molding, and the core material 27 is positioned on the flange 24. The core member 27 is integrated with the flange 24, and the synthetic resin portion of the flange 24 is bent and deformed following the bending deformation of the core member 27.

  As shown in FIG. 2B, in the flange 24 in which the pair of core members 27 are integrated, the right flange portion 24c and the left flange portion 24d are also warped (curved) following the warp of the pair of base portions 28. ) Further, the base portion 28 is warped so that a portion that is equidistant from both core material pressed portions 29, that is, the center in the longitudinal direction is closest to the bottom wall 21 side of the box body 20 in the depth direction of the box body 20. (Curved). Therefore, the flange 24 is warped (curved) so that the center in the longitudinal direction of the left flange portion 24 d and the left flange portion 24 d is located closest to the bottom wall 21 in the depth direction of the box body 20. Further, the flange 24 is warped (curved) so that the upper flange portion 24 a and the lower flange portion 24 b are farthest from the bottom wall 21 in the depth direction of the box body 20.

  The flange 24 has higher rigidity than the case where the flange member 24 is formed of only synthetic resin by integrating the core material 27. Further, the pair of core members 27 are arranged at positions avoiding the respective through holes 25 of the flange 24.

Next, the installation method of the wiring apparatus S using the box 10 with a flange is described with an effect | action.
As shown in FIG. 3, first, the side surface of the wiring box 50 is brought into contact with the side surface of the column H, and the wiring box 50 is arranged at a desired position with respect to the column H. At this time, the cable C is previously drawn into the wiring box 50 through the cable insertion hole 54. Next, the screw 58 is inserted into the screw hole 56 and the screw 58 is forcibly screwed into the column H to fix the wiring box 50 to the column H. And the wiring box 50 is installed in the wall W by standing up the wall material W1 so that the pillar H may be pinched | interposed.

  Next, a vertically long elliptical wall hole Wa is formed at a position corresponding to the opening of the wiring box 50 in the wall material W1, and the inside of the wiring box 50 faces the front side of the wall material W1 through the wall hole Wa. To. Next, the cable C drawn into the wiring box 50 is pulled out from the wall hole Wa to the front side of the wall material W1.

  Next, as shown in FIG. 4, the cable C is forcibly inserted into the bottom wall 21 of the flanged box 10, and the cable C is drawn into the box body 20. Then, the box body 20 of the box 10 with flange is inserted into the wall hole Wa from the bottom wall 21 side, the box body 20 is disposed in the wiring box 50, and the flange 24 is placed on the front side (wall surface) of the wall W. It arrange | positions at the periphery of hole Wa.

As shown in FIG. 7, a part of the right flange portion 24c and the left flange portion 24d of the flange 24 is in contact with the surface of the wall material W1 outside the wall hole Wa.
Further, as shown in FIG. 4, the upper flange portion 24a and the lower flange portion 24b are separated from the surface of the wall material W1 by a warp (curvature) of the flange 24 with a gap from the surface of the wall material W1.

  Next, as shown in FIG. 5, the wiring device S is held in the device frame 60. Further, the cable C is connected to the wiring device S while pulling the cable C drawn into the box body 20 toward the wall hole Wa. Next, the wiring device S is inserted into the box body 20, and the device frame 60 is disposed on the opening side of the box body 20. Then, the fixing screws B inserted through the screw insertion holes 62 of the instrument frame 60 are inserted into the through holes 25 of the flanged box 10, and the fixing screws B are screwed into the 50 boss portions 55.

  As shown in FIG. 6, along with the screwing of the fixing screw B, both end portions in the longitudinal direction of the instrument frame 60 press the upper flange portion 24a and the lower flange portion 24b of the flange 24 toward the wall W, and the core material The pressed part 29 is pressed. Therefore, in this embodiment, while the upper flange part 24a and the lower flange part 24b are pressed by the instrument frame 60, the to-be-pressed part which opposes across the opening of the box main body 20 is comprised. Then, both ends of the instrument frame 60 press the periphery of the through hole 25 in the upper flange portion 24a and the lower flange portion 24b toward the wall W as the fixing screw B is screwed.

  At this time, as shown in FIG. 7, both end portions of the instrument frame 60 press only the core member pressed portion 29 and do not press the base portion 28. As the upper flange portion 24 a and the lower flange portion 24 b are pressed toward the wall W by the fixing screw B, the core member pressed portions 29 of both the core members 27 are also pressed toward the wall W. Then, both the core members 27 are bent and deformed in a direction in which the warpage of the base portion 28 subsides, and when the upper flange portion 24a and the lower flange portion 24b come into contact with the surface of the wall member W1, the base portion 28 becomes the surface of the wall member W1. And the flange 24 is pressed toward the wall W by the pressing force from the base portions 28 of the core members 27.

  In addition, since the base portion 28 is almost integrated with the right flange portion 24c and the left flange portion 24d, the base portion 28 prevents the right flange portion 24c and the left flange portion 24d from being deformed, and has a flat plate shape. To be deformed.

  As a result, as shown in FIG. 6, the upper flange portion 24a and the lower flange portion 24b are in contact with the surface of the wall W, and the right flange portion 24c and the left flange portion 24d are also in contact with the surface of the wall W. It is pressed against the surface of the wall W over the entire circumference.

  Then, by tightening the fixing screw B, the upper flange portion 24a and the lower flange portion 24b are sandwiched between both longitudinal ends of the instrument frame 60 and the wall material W1, and the flanged box 10 is attached to the wall W. The instrument frame 60 is bridged between the upper flange portion 24a and the lower flange portion 24b with the opening of the box body 20 interposed therebetween. Further, the rear surface of the flange 24 is in close contact with the surface of the wall W in a state of surrounding the wall hole Wa. As a result, the front side of the wall W and the inside of the wiring box 50 are blocked by the flanged box 10 to ensure airtightness, and dust in the wall W is prevented from entering the room through the wall hole Wa. The

Finally, the wiring device S is installed on the wall W by arranging the decorative cover 70 on the surface side of the device frame 60.
According to the above embodiment, the following effects can be obtained.

  (1) A pair of core members 27 are integrated with the flange 24 of the flanged box 10. Each core member 27 is warped (curved) at the base portion 28, and the flange portion 24 is warped by the base portion 28 so that the upper flange portion 24 a and the lower flange portion 24 b are separated from the bottom wall 21. For this reason, in a state where the flange 24 is arranged around the wall hole Wa, the upper flange portion 24a and the lower flange portion 24b are separated from the surface of the wall material W1. When the upper flange portion 24 a and the lower flange portion 24 b are pressed by the instrument frame 60 when the wiring device S is installed, the flange 24 is bent and deformed into a flat plate shape by the bending deformation of the base portion 28, and the flange is pressed by the pressing force of the base portion 28. The back surface of 24 can be pressed against the surface of the wall W, and the airtightness of the wall hole Wa can be secured by the flange 24.

  (2) When the core member pressed portion 29 is pressed by the instrument frame 60, the pressing force is transmitted to the base portion 28. Since the right flange portion 24c and the left flange portion 24d are integrated with each base portion 28, it is possible to prevent the right flange portion 24c and the left flange portion 24d from being deformed so as to be waved while being deformed into a flat plate shape.

  (3) The entire flange 24 is in close contact with the surface of the wall W in a state of being deformed into a flat plate shape. For this reason, in order to prevent the curvature of the flange 24, it is not necessary to increase the thickness of the core material 27, the decorative cover 70 covering the flange 24 is lifted from the surface of the wall W, or the thickness of the decorative cover 70 is increased. Nor.

  (4) The pair of core members 27 are warped (curved) so that the longitudinal center of the base portion 28 is closest to the bottom wall 21 side. For this reason, when both the core material pressed portions 29 are pressed by the instrument frame 60, the base portion 28 can be bent and deformed without deviation in the longitudinal direction, and the entire core material 27 can be bent and deformed into a flat plate shape. Therefore, the entire flange 24 can be bent and deformed in a flat plate shape, and the back surface of the flange 24 can be brought into close contact with the surface of the wall W around the wall hole Wa.

  (5) The core material 27 is formed in a U shape, and two (plural) core materials 27 are integrated with the flange 24. For this reason, when the upper flange portion 24a and the lower flange portion 24b of the flange 24 are pressed by the instrument frame 60, the base portions 28 of the two core members 27 are each independently bent and deformed. Therefore, the right flange portion 24c and the left flange portion 24d can be separately bent and deformed by the two base portions 28. As a result, a pressing force can be applied to the flange 24 at two locations, and the flange 24 can be strongly pressed against the wall W.

  (6) The core material 27 is integrated with the flange 24 by insert molding. For this reason, even if the flange 24 is pressed by the instrument frame 60 and the core member 27 is bent and deformed, the core member 27 can be prevented from being peeled off from the synthetic resin portion of the flange 24.

  (7) In the core material 27, the base portion 28 is warped so as to be gently curved. For this reason, the flange 24 is also warped so that the right flange portion 24c and the left flange portion 24d are gently curved. Therefore, when the flange 24 is pressed by the instrument frame 60, the right flange portion 24c and the left flange portion 24d can be gently bent and deformed. Therefore, the reaction force of the base portion 28 when bent and deformed can be suppressed, and the core material 27 can be prevented from peeling from the synthetic resin portion of the flange 24, and the fixing screw B can be easily screwed.

  (8) Although the through hole 25 is formed in the flange 24, the core material pressed portion 29 of the pair of core members 27 is integrated with the upper flange portion 24a and the lower flange portion 24b on both sides avoiding the through hole 25. Has been. For this reason, when the fixing screw B inserted through the instrument frame 60 is inserted into the through hole 25, the core member 27 does not get in the way.

  (9) The flanged box 10 is formed of a soft synthetic resin so that the rear surface of the flange 24 is brought into close contact with the surface of the wall material W1 to ensure airtightness. Such a flange 24 is easily deformed so as to be waved by pressing by the instrument frame 60, and is easily separated from the surface of the wall material W1. However, by integrating the core material 27 having warpage into the flange 24, even if it is made of a soft synthetic resin, it can be brought into close contact with the surface of the wall material W1 while preventing the flange 24 from wavy. Can be secured.

In addition, you may change the said embodiment as follows.
○ In the flanged box 10, the upper flange portion 24a and the lower flange portion 24b may be extended as compared with the embodiment so that two or more instrument frames 60 can be arranged side by side, and the upper flange portion 24a and the lower flange portion 24b A plurality of through holes 25 are provided.

  In the embodiment, the upper flange portion 24a and the lower flange portion 24b of the flange 24 extend in the short direction of the flanged box 10, and the right flange portion 24c and the left flange portion 24d extend in the longitudinal direction. Good. That is, the upper flange portion 24a and the lower flange portion 24b may extend in the longitudinal direction of the flanged box 10, and the right flange portion 24c and the left flange portion 24d may extend in the short direction.

In this case, the upper flange portion 24 a and the lower flange portion 24 b extending in the longitudinal direction constitute pressed portions that are pressed by both end portions of the instrument frame 60.
In addition, when the upper flange portion 24a and the lower flange portion 24b extend in the longitudinal direction of the flanged box 10, and the upper flange portion 24a and the lower flange portion 24b are provided with a plurality of through holes 25, the upper flange portion 24a And the core material 27 does not need to be arrange | positioned at the lower flange part 24b. In this case, the upper flange portion 24 a and the lower flange portion 24 b as pressed portions are pressed by the plurality of instrument frames 60. At this time, the core material 27 disposed in the right flange portion 24c and the left flange portion 24d is bent and deformed by the pressing by the instrument frame 60 disposed on both sides in the longitudinal direction. The upper flange portion 24 a and the lower flange portion 24 b are bent and deformed by pressing the instrument frame 60. Therefore, since all the flanges 24 are bent and deformed in a flat plate shape, it is not necessary to dispose the core material 27 on the upper flange portion 24a and the lower flange portion 24b.

The core material 27 may be a square ring extending over the entire circumference of the flange 24.
The box body 20 of the flanged box 10 may be formed in a round box shape, and the flange 24 may be formed in an annular shape. In this case, the core material 27 may be a pair of semicircular divided bodies or may be an annular one.

The core material 27 may be integrated by being stuck to the flange 24 with an adhesive or the like.
In the thickness of the flange 24, an insertion hole into which the core member 27 can be inserted may be formed, and the flange member 24 and the core member 27 may be integrated by inserting the core member 27 into the insertion hole.

In the embodiment, the base portion 28 of the core material 27 is curved so as to be gently bent, but the base material 28 may be bent.
The core material 27 is integrated with the flange 24 by insert molding, but the core material 27 and the flange 24 may be separated and the core material 27 may be integrated with the flange 24 when the flanged box 10 is installed.

  ○ In the base portion 28 of the core material 27, the base portion 28 is warped so that the portion (center in the longitudinal direction) that is equidistant from the core material pressed portion 29 is closest to the bottom wall 21 side. It may be changed.

The flange 24 is formed from the opening end of the box body 20, but the flange 24 may be formed from a position closer to the bottom wall 21 than the opening end of the box body 20.
The core material 27 may be warped so that the base portion 28 has a flat plate shape and the core material pressed portion 29 is bent with respect to the base portion 28.

  In the embodiment, the pressed portion of the flange 24 is the upper flange portion 24a and the lower flange portion 24b. However, the pressed portion is part of the upper flange portion 24a side in the right flange portion 24c and the left flange portion 24d. A part on the lower flange portion 24b side may be included.

(Circle) the box 10 with a flange may be formed with the rubber | gum as a soft material.
In the embodiment, the shape of the wall hole Wa drilled in the wall material W1 is a vertically long oval shape. However, the shape is not limited to this. For example, a part of a vertically long rectangular shape, an oval shape, or a perfect circle may overlap. Two substantially bowl-shaped may be formed.

Next, the technical idea that can be grasped from the above embodiment and other examples will be described below.
(A) The core is a box with a flange that is insert-molded.
(B) A flanged box in which a through hole through which a fixing screw inserted into the instrument frame passes is formed in the flange, and the core member pressed portion is integrated with the flange while avoiding the through hole .

  S: Wiring device, W: Wall, Wa ... Wall hole, 10 ... Box with flange, 20 ... Box body, 21 ... Bottom wall, 22 ... Peripheral wall, 24 ... Flange, 24a ... Upper flange part as pressed part, 24b ... Lower flange part as pressed part, 27 ... Core material, 28 ... Base part, 29 ... Core material pressed part, 60 ... Instrument frame.

Claims (3)

A bottom wall and a peripheral wall erected from the bottom wall, having an opening on one side and being formed in a bottomed box shape capable of arranging a wiring device inside the peripheral wall, from the opening side of the peripheral wall A box body made of a soft material having an annular flange extending outward;
A core provided on the flange,
The box body is inserted into a wall hole drilled in a wall and the flange is arranged around the wall hole on the wall surface,
In a state where the instrument frame holding the wiring instrument is installed on the opening side of the box body, the pressed part facing the opening across the opening is pressed toward the wall in the flange, and the instrument frame is A flanged box used in a state of being bridged between the pressed parts,
The core material is disposed on the pressed portion of the flange and pressed by the instrument frame;
A base portion that connects the opposed core material pressed portions and is disposed at a location sandwiching the pressed portion in the flange; and
The flanged box is characterized in that the core material is formed so that the core material pressed portion warps in a direction away from the bottom wall rather than the base portion.   2. The flanged box according to claim 1, wherein the base portion is warped so that a portion that is equidistant from the facing core member pressed portion is closest to the bottom wall side.   The box with a flange according to claim 1 or 2, wherein a plurality of the core members are provided on the flange.