JP2016069919A - Anti-warpage core material, panel body, door and door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase rigidity of an anti-warpage core material 20 that is incorporated in the inside of a door 8 as a panel body and facilitates its manufacture.SOLUTION: An anti-warpage core material 20 comprises a plate-like base part 21a disposed along a thickness direction of a door 8, and a pair of projection pieces 21b, 21b extending in parallel to each other in the same direction from both ends in the width direction of this base part 21a. The anti-warpage core material is formed by joining and integrating two core members 21, 21 of the U-shaped cross section folded and formed by an iron material while at least a portion of a back surface of each base part 21a is brought into abutment therewith. Also, the two core members 21, 21 are joined and integrated while each back surface of the base part 21a is shifted by a shift amount S in at least one hand of the width direction and the length direction of the base part 21a, and the shift amount S of those core members 21, 21 is set according to the thickness and length of the door 8.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a warp-preventing core, a panel body, a door, and a door device in which the warp-preventing core is assembled.

  In general, a door with a flash panel structure in which a decorative plate material is bonded to the front and back surfaces of a framed core material may be warped due to expansion and contraction of the decorative plate material on the front and back surfaces, and particularly has a height from the floor surface to the ceiling. This is especially true for tall doors. For this reason, in order to prevent such warpage of the door, a highly rigid core material for preventing warpage is incorporated in the door.

  As such a warp-preventing core material, conventionally, for example, as shown in Patent Document 1, a steel square pipe having stepped portions formed on both sides in the width direction has been proposed.

JP 7-317206 A

  However, the thing of this patent document 1 had the problem that it was necessary to form a level | step-difference part in the width direction both sides of a square pipe, and the process for the special shape was troublesome and manufacture was difficult.

  The present invention has been made in view of such a point, and its main purpose is to increase the rigidity of the core material for warping prevention and to facilitate its manufacture by adding a device to the structure of the core material for warping prevention. There is in doing so.

  In order to achieve the above object, according to the present invention, a plurality of core members having a U-shaped cross section are integrally joined so as to be butted against each other to form a warp preventing core material.

  Specifically, the first invention is a warpage prevention core material provided inside the panel body to prevent warpage of the panel body, and each of the warpage prevention core materials is the above panel. A cross section formed by bending an iron material, comprising a plate-like base portion arranged along the thickness direction of the body and a pair of protruding pieces extending in parallel to each other in the same direction from both ends in the width direction of the base portion A plurality of U-shaped core members are joined and integrated in a state in which at least a part of the back surface located on the opposite side of the protruding piece is brought into contact with each base portion.

  In the first invention, the core material for warpage prevention includes at least one of the back surfaces on which the plurality of U-shaped core members formed by bending an iron material are positioned on the side opposite to the protruding piece of each base portion. Are joined and integrated in a state where the parts are in contact with each other, so that a plurality of core members are formed by bending an iron material into a U-shaped cross section, and the plurality of core members are joined and integrated on the back of the base. The core material for warpage prevention can be obtained only by this, and its manufacture can be easily performed.

  In addition, since the core material for warpage prevention is a structure in which a plurality of core members are joined and integrated between the back surfaces of the base parts, the rigidity is high and the cross-sectional efficiency is high due to the bending strength. Warpage can be prevented by increasing the rigidity of the panel body.

  Further, since the plurality of core members are joined at the respective base portions, when the panel of the panel body is brought into contact with the protruding piece of the core member, the joint portion between the core members does not appear at the contact portion of the panel. The joined portion does not contact the panel and does not affect the finish or quality of the panel.

  A second invention is characterized in that, in the first invention, the plurality of core members are joined and integrated in a state where the back surfaces of the respective base parts are shifted in the width direction of the base part.

  A third invention is characterized in that, in the first invention, the plurality of core members are joined and integrated in a state where the back surfaces of the respective base parts are displaced in the length direction of the base parts.

  The fourth invention is characterized in that, in the first invention, the plurality of core members are joined and integrated in a state where the back surfaces of the respective base parts are shifted in the width direction and the length direction of the base part.

  In these inventions, the plurality of core members are joined and integrated in a state where the back surfaces of the respective base portions are shifted to at least one of the width direction and the length direction of the base portions. The shift amount of the plurality of core members can be set. For example, when the thickness of the panel body is large, the amount of shift in the width direction of the base can be increased compared to when the panel body is thin, and the overall width of the warpage preventing core can be increased according to the thickness of the panel body. . Further, when the length of the panel body is long, the shift amount in the length direction of the base portion is increased as compared with when the panel body is short, and the overall length of the warp preventing core is increased according to the length of the panel body. be able to. Thereby, the core material for warpage prevention can be incorporated corresponding to panel bodies having various thicknesses and lengths.

  According to a fifth invention, in any one of the first to fourth inventions, the plurality of core members are formed of one type having base portions having the same width.

  According to the fifth aspect of the present invention, a warp preventing core material can be obtained by one type of core member having base portions having the same width, and even if the width and length of the panel body are different, the corresponding warp preventing core material is obtained. The core material can be formed of one type of core member, and the number of parts can be reduced to reduce the cost.

  A sixth invention is characterized in that, in any one of the first to fourth inventions, the plurality of core members are made of two types having base portions having different widths.

  In the sixth aspect of the invention, a warp prevention core material is obtained by two types of core members having base portions having different widths, and the warp prevention core materials corresponding to the panel bodies having different widths and lengths are obtained by using two types of cores. It becomes possible to form with a member.

  A seventh invention is characterized in that, in the sixth invention, the width of the base of one type of core member is 15 mm, and the width of the base of the other type of core member is 25 mm.

  In the seventh invention, a core member having a base width of 15 mm and a core member having a base width of 25 mm are appropriately combined and, for example, shifted by 5 mm or more in the width direction so that the back surfaces of the base portions overlap each other. When the thickness of the panel body is 20 to 50 mm, a core material for warpage prevention having a width of 15 to 45 mm can be obtained, and can be incorporated as a warp prevention core material in the panel body in that range, For example, if the panel body is a door, it can correspond to all doors having a general thickness.

  8th invention is an invention which concerns on a panel body, and this panel body is the state which the panel of the front and back contact | abutted to the protrusion piece of the core member of the core material for curvature prevention in any one of 1st-7th invention It is characterized by being assembled in.

  9th invention is an invention which concerns on a door, and this door is in the state which the decorative board material of the front and back contact | abutted to the protrusion piece of the core member of the core material for warpage prevention of any one of the 1st-7th invention. It is characterized by being assembled.

  In the eighth and ninth inventions, it is possible to easily obtain a panel body and a door that are not easily warped by the warpage preventing core material.

  A tenth aspect of the invention relates to a door device, and this door device is characterized in that the door of claim 9 and a door frame are combined.

  In the tenth aspect of the invention, a door device having a door that is difficult to warp by the warp-preventing core is easily obtained.

  As described above, according to the present invention, a plurality of core members having a U-shaped cross-section formed by bending an iron material are joined and integrated with at least a part of the back of each base in contact with each other to prevent warpage. By providing the material, it is possible to obtain a warp preventing core material by joining and integrating a plurality of core members obtained by bending an iron material into a U-shaped cross section at the back of the base, and facilitating the manufacture thereof. In addition, the core material for warpage prevention in which a plurality of core members are joined and integrated on the back of the base has high rigidity, and the bending efficiency provides high cross-sectional efficiency. Can be prevented. Furthermore, when the panel of the panel body is brought into contact with the protruding piece of the core member, the joint portion between the core members does not appear at the contact portion of the panel, and the joint portion touches the panel, affecting the finish and quality of the panel. Will not affect. If the plurality of core members are joined and integrated in a state where the back surfaces of the respective bases are shifted, the shift amounts of the plurality of core members can be set according to the thickness and length of the panel body. A warp preventing core material can be incorporated in correspondence with the panel body having a length and a length.

FIG. 1 is a front view of a door device according to an embodiment of the present invention. FIG. 2 is a front view showing a four-way fence (woody core material) and a warp-preventing core material of a door having a flash panel structure according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of the door shown with a part thereof omitted. FIG. 4 is a cross-sectional view of the core material for preventing warpage. FIG. 5 is an enlarged cross-sectional view showing the attachment structure of the warpage prevention core material. FIG. 6 is a view corresponding to FIG. 5 and showing a first modification of the attachment structure of the warp prevention core material. FIG. 7 is a view corresponding to FIG. 5 and showing a second modification of the attachment structure of the warp prevention core member. FIG. 8 is a perspective view showing Modification 1 of the warpage preventing core material. FIG. 9 is a view corresponding to FIG. 4 showing a second modification example of the core material for preventing warpage. FIG. 10 is a view corresponding to FIG. 4 showing a third modification of the core material for warpage prevention. FIG. 11 is a view corresponding to FIG. 4 showing a fourth modification of the core material for preventing warpage.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the embodiments is merely illustrative in nature and is not intended to limit the present invention, its application, or its use at all.

  FIG. 1 shows a door device A (joint) according to an embodiment of the present invention, and this door device A has a door frame 1 constructed in, for example, an opening in a building. The door frame 1 includes two vertical frames 2, 2 positioned on the left and right sides, and an upper frame 3 (kamoi) placed horizontally between the upper ends of both the vertical frames 2, 2. An opening 4 is formed inside. Further, a door 8 (panel body) is supported on one of the vertical frames 2 and 2 by a plurality of upper and lower hinges 6 and 6, for example, so that the opening 4 can be opened and closed by the swing of the door 8. It has come to be. Reference numeral 7 denotes a lever handle of the door 8.

  As shown in FIGS. 2 and 3, the door 8 is integrally formed with decorative plate materials 19 and 19 as panels made of MDF or the like on the front and back surfaces of a four-sided frame 9 (core material) made of a wooden material or the like in a rectangular frame shape. It is a door with a flash panel structure joined together. The four-way rod 9 includes, for example, outer vertical rod members 10 and 10 positioned at both left and right ends of the door 8, and an upper beam member 11 and a lower beam respectively connected between upper and lower end portions of the outer vertical rod members 10 and 10. Material 12, upper and lower horizontal beam members 13, 13 connected between the upper and lower ends of both outer vertical bar members 10, 10, and the outer side between upper bar member 11 and lower bar member 12 (outer vertical bar member 10 Left and right inner vertical bar members 14 and 14 connected to each other, and left and right vertical bar members 15 and 15 connected to the left and right intermediate portions between the upper beam member 11 and the lower beam member 12, respectively. The front and back surfaces of the vertical saddle members 10 and 14, the upper and lower beam members 11 and 12, the horizontal beam member 13 and the vertical beam member 15 are all located on the same plane. , 19 are integrally joined and fixed.

  Each timber 10, 14, crosspieces 11-13, 15 are sawn wood, plywood, wood fiberboard (IB, MDF, etc.), wood chipboard (particle board, strand board, OSB, etc.), laminated wood, veneer A laminated material or an arbitrary composite material thereof is used.

  For example, two right and left warp prevention core members 20, 20 for preventing warpage of the door 8 are assembled and fixed inside the door 8. Specifically, the two warp-preventing core members 20 and 20 are arranged in the four-way rod 9 so as to be adjacent to the inner vertical rod members 14 on the left and right center sides of the left and right inner vertical rod members 14 and 14, respectively. The upper and lower end portions of each of the upper beam member 11 and the lower beam member 12 and the inner vertical rod member 14 are, for example, of the door 8 of two core members 21 and 21 having a U-shaped cross section which will be described later. A rectangular parallelepiped roller material (not shown) is fitted inside the core member 21 located on the left and right center side, with a part thereof protruding slightly in the length direction of the core member 21, and the length of the roller material The direction protruding portion is fixed by tucking the upper crosspiece 11, the lower crosspiece 12 and the inner vertical eaves 14 together. Of course, the number of the warp preventing cores 20 provided in the door 8 may be one or three or more.

  As shown in FIG. 4, each warpage preventing core member 20 is formed by integrally joining two core members 21 and 21 having a U-shaped cross section. Each core member 21 is formed by bending an iron material such as an iron plate or a stainless steel plate having a thickness of 1 to 5 mm into a U-shaped cross section, and along the thickness direction of the door 8 (panel body). It consists of a plate-like base portion 21a having a width W and a pair of protruding pieces 21b and 21b extending in parallel in the same direction from both ends of the base portion 21a in the width direction. Both the core members 21 and 21 are the same as each other, that is, one type having the base portion 21a having the same width W.

  The two core members 21 and 21 abut at least a part of the back surfaces of the base portions 21a opposite to the protruding pieces 21b and 21b, and the back surfaces of the base portions 21a are predetermined in the width direction of the base portion 21a. The warpage prevention core material 20 is constituted by the joined core members 21 and 21 in a state of being shifted by a deviation amount S, and the door thickness direction of the warpage prevention core material 20 as a whole is constituted. Is Wt. The shift amount S between the two core members 21 and 21 is, for example, the dimension between the center portions in the width direction of the base portions 21a and 21a.

  For example, caulking joining, rivet joining, spot welding, or the like is adopted as a joining method for both core members 21 and 21. In the case of caulking, for example, the bases 21a and 21a of both core members 21 and 21 are overlapped on the back surface, and the bases 21a and 21a overlapped in this state are passed through the press-fitting part of the caulking machine to be deformed. 21a and 21a are integrally joined to each other through the deformed portions. Further, in the rivet joining, for example, the base portions 21a and 21a of the two core members 21 and 21 are similarly overlapped on the back surface, the base portions 21a and 21a overlapped in that state are punched, and rivets are inserted into the holes. The bases 21a and 21a are integrally joined between the heads of the rivets by pressurizing and deforming the rivets to form heads at both ends. Furthermore, in the case of spot welding, for example, in a state where the base portions 21a and 21a of both core members 21 and 21 are overlapped on the back surface, the overlapping base portions 21a and 21a are pressurized between the spot electrodes of the welding machine, In this case, the base 21a is welded together at a portion where the two base portions 21a are welded.

  In the state where the warpage preventing core member 20 is assembled inside the door 8, as shown in FIG. 5, for example, the base portions 21a and 21a of both core members 21 and 21 are arranged in the thickness direction of the door 8 (in FIG. The leading ends of the protruding pieces 21b, 21b of one core member 21 are in contact with the inner vertical rod member 14, and the core members 21, 21 are displaced in the warp preventing core material 20. The decorative plates 19 and 19 on the front and back surfaces are adhered to the outer protruding pieces 21b and 21b located on the front end side in the direction of contact with a double-sided tape, an adhesive, or the like, in contact with the back surfaces.

(Modification)
As a structure in which the warpage preventing core member 20 is assembled inside the door 8, in addition to the above, for example, as shown in FIG. 6, the tip portions of both projecting pieces 21b and 21b are in contact with the inner vertical rod member 14. In the core member 21 (inside of the U-shaped cross section), another core material 16 fixed to the inner vertical rod member 14 with screws V is fitted, or as shown in FIG. The leading end portions of both projecting pieces 21 b and 21 b of the core member 21 are brought into contact with the inner vertical rod member 14, and the leading end portions of both projecting pieces 21 b and 21 b of the other core member 21 are brought into contact with the other vertical rod member 17. A structure may be adopted.

  Further, instead of the two core members 21 and 21 being joined and integrated with the back surfaces of the base portions 21a being shifted by a predetermined shift amount S in the width direction of the base portion 21a, they are shown in FIG. As described above, the back surfaces of the base portions 21a may be joined and integrated in a state where they are shifted by a predetermined shift amount S in the length direction of the base portions 21a, or the back surfaces of the base portions 21a may be integrated in the width direction of the base portions 21a. In addition, they may be joined and integrated in a state of being shifted by a predetermined shift amount in both the length direction and the length direction.

  Further, instead of the two core members 21 and 21 being joined and integrated in a state where the back surface of each base portion 21a is shifted by a predetermined amount S in the width direction of the base portion 21a, as shown in FIG. The back surface of the base portion 21a may not be displaced in either the width direction or the length direction of the base portion 21a, and both core members 21 and 21 may be joined and integrated in a state where the entire back surface of each base portion 21a is in contact. .

  Further, the two core members 21 and 21 are the same as each other, and instead of being one type having the base portion 21a having the same width W, as shown in FIG. The two core members 21 and 21 may be of two types: a core member 21 having a width W1 and a core member 21 having a base portion 21a having a width W2 larger than the width W1 of the base portion 21a of the core member 21. . At this time, for example, if the width W1 of the base portion 21a of one core member 21 is 15 mm and the width W2 of the base portion 21a of the other core member 21 is 25 mm, it corresponds to all doors 8 having a general thickness. This is preferable. The reason will be described later.

  Further, the warp preventing core material 20 is formed by joining and integrating two core members 21, 21, but as shown in FIG. 11, three core members 21, 21,. May be. In that case, for example, the three core members 21, 21, etc. have a part of the back surfaces of the base parts 21 a, 21 a of the other two core members 21, 21 abut on the back surface of the base part 21 a of one of the core members 21. In this state, they are joined and integrated.

(Combination of core members)
A case in which the warp preventing core material 20 having a width Wt corresponding to the thickness of the door 8 is formed by combining the two or three core members 21, 21,.

  The common thickness of the door 8 having a flash panel structure is 20 to 50 mm (in the case of a soundproof door), and if a decorative plate having a thickness of 2.7 mm is used as the decorative plate materials 19 and 19 on the front and back of the door 8, the warpage is prevented. The width Wt of the core material 20 may be about Wt = 15 (≈20−5.4) to 45 (≈50−5.4) mm.

  Therefore, for example, when the thickness of the door 8 is 20 mm, a structure in which two core members 21 and 21 having a width Wt = 15 to 18 mm are shifted and integrated in the width direction may be used.

  More specifically, for example, when joining two core members 21, 21,... In the width direction by shifting by a shift amount S = 5 mm, the core member 21 having a width W1 = 15 mm and 2 having a width W2 = 25 mm are used. If two types of core members 21 are prepared, they can be assembled to all the common doors 8 having a thickness of 20 to 50 mm by combining them.

  That is, (1) when the thickness of the door 8 is 20 to 30 mm, the two first core members 21 and 21 having the width W1 = 15 mm may be joined and integrated, and (2) the thickness of the door 8 is 30. When it is ˜40 mm, one core member 21 having a width W1 = 15 mm and one core member 21 having a width W2 = 25 mm may be joined and integrated. (3) The thickness of the door 8 is 30 to 50 mm. When the width W2 = 25 mm, the two core members 21, 21 may be joined and integrated.

  In addition, the core member 20 for warpage prevention having a width Wt = 45 mm can be formed by joining and integrating three core members 21, 21,... Having a width W = 20 mm, as shown in FIG.

  In this embodiment, the warpage preventing core material 20 includes at least one core member 21, 21,... Having a U-shaped cross section formed by bending an iron material, at least one of the back surfaces of the base portions 21a. The parts are joined and integrated with the parts in contact with each other. Therefore, by bending the iron material to form a plurality of core members 21, 21,... Having a U-shaped cross-section, the core members 21, 21,. 20 can be obtained, and can be easily manufactured.

  And since the core material 20 for warpage prevention is one in which a plurality of core members 21, 21,... Are joined and integrated on the back surface of the base 21a, the rigidity is high and the cross-sectional efficiency is high due to the bending strength. When assembled, the rigidity of the door 8 can be increased to effectively prevent warping.

  Further, since the plurality of core members 21, 21,... Are joined at the respective base portions 21a, the decorative plate materials 19, 19 of the door 8 are brought into contact with the protruding pieces 21b, 21b of the core members 21, 21,. Sometimes, the joint portion between the core members 21, 21,..., That is, the through-deformed portion due to caulking, the rivet due to rivet joining, and the welded portion due to spot welding do not appear in the contact portion with the decorative plate materials 19, 19. Therefore, the joint portion does not abut on the decorative board materials 19 and 19 and does not adversely affect the finish and quality of the decorative board materials 19 and 19.

  In addition, when two or three core members 21, 21,... Are joined and integrated in a state where the back surface of each base portion 21a is shifted in the width direction, the length direction, or both the width direction and the length direction of the base portion 21a. By setting the deviation amount S of the core members 21, 21,... According to the thickness and length of the door 8, an appropriate warp preventing core material 20 corresponding to the thickness and length of the door 8 is obtained. Can be obtained. For example, when the door 8 is thick, the shift amount S in the width direction of the base portion 21a of the core members 21, 21,... What is necessary is just to increase according to the thickness of 8. Further, when the length of the door 8 is long, the shift amount S in the length direction of the base portion 21a of the core members 21, 21,... Can be increased according to the length of the door 8. By doing in this way, the core material 20 for curvature prevention can be incorporated corresponding to the door 8 which has various thickness and length.

  Further, the two or three core members 21, 21,... Are made of one type having base portions 21 a having the same width, so that the warp preventing core material 20 can be obtained by the one type of core member 21. . Therefore, even if the width and length of the door 8 are different, it is possible to form the warp prevention core material 20 corresponding thereto with one type of core member 21, and a plurality of types of core members 21 with different widths of the base portion 21a. , 21,... Can be reduced in cost by reducing the number of parts of the warpage prevention core material 20.

  On the other hand, two or three core members 21, 21,... Are made of two types of core members 21 having base portions 21 a having different widths, so that the two types of core members 21 prevent warpage. The core material 20 is obtained, and as described above, even if the doors 8 have different widths and lengths, the warp prevention core material 20 corresponding to them is formed by only two types of core members 21. Will be able to.

  Then, the warpage prevention core material 20 is assembled in the door 8 and assembled in a state where the front and back decorative plate materials 19, 19 are in contact with the protruding pieces 21 b, 21 b of the core member 21 of the warpage prevention core material 20. Therefore, the door 8 which does not warp easily by the core material 20 for warpage prevention and the door device A having the door 8 which is hard to warp can be easily obtained.

(Other embodiments)
In the above embodiment, the warpage preventing core material 20 is formed by joining and integrating two or three core members 21, 21,..., But four or more core members 21, 21,. Bonding may be integrated.

  Moreover, although the said embodiment demonstrated the case where the core material 20 for curvature prevention was assembled | attached inside the door 8, this invention requires rigidity, such as a partition panel, by the core material 20 for curvature prevention. The present invention can also be applied to a panel body that can prevent warping.

  INDUSTRIAL APPLICABILITY The present invention is extremely useful because a highly rigid core material for preventing warpage that is incorporated inside the panel body and prevents warpage of the panel body can be easily obtained.

A Door device 1 Door frame 8 Door (panel body)
9 Four-way rod 19 Decorative plate material 20 Warp prevention core material Wt width 21 Core member S Deviation 21a Base W, W1, W2 width 21b Projection piece

Claims (10)

A warpage prevention core material provided inside the panel body to prevent warpage of the panel body,
Each comprises a plate-like base portion disposed along the thickness direction of the panel body and a pair of projecting pieces extending in parallel to each other in the same direction from both ends of the base portion in the width direction, and the iron material is bent. A plurality of core members having a U-shaped cross-section formed are joined and integrated in a state where at least a part of the back surface located on the opposite side to the protruding piece is brought into contact with each base portion. Core material for prevention. In claim 1,
The core member for warpage prevention, wherein the plurality of core members are joined and integrated in a state where the back surfaces of the respective base portions are shifted in the width direction of the base portion. In claim 1,
The core member for warpage prevention, wherein the plurality of core members are joined and integrated in a state where the back surfaces of the respective base portions are shifted in the length direction of the base portion. In claim 1,
The core member for warpage prevention, wherein the plurality of core members are joined and integrated in a state where the back surfaces of the respective base portions are shifted in the width direction and the length direction of the base portion. In any one of Claims 1-4,
The core member for warpage prevention, wherein the plurality of core members are made of one type having base portions having the same width. In any one of Claims 1-4,
The core member for warpage prevention, wherein the plurality of core members are made of two types having base portions with different widths. In claim 6,
A warp-preventing core material, wherein the width of the base of one type of core member is 15 mm, and the width of the base of the other type of core member is 25 mm.   A panel body, wherein the front and back panels are in contact with the protruding pieces of the core member of the core member for warpage prevention according to any one of claims 1 to 7.   A door characterized in that the door is assembled in a state where the front and back decorative plate materials are in contact with the protruding piece of the warpage preventing core material according to any one of claims 1 to 7.   A door device comprising a combination of the door of claim 9 and a door frame.

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