JPH0566194U - Wooden fire door - Google Patents

Abstract

(57) [Summary] [Structure] The three core material pieces 3a, 3b, 3c are non-adhesively bonded in the longitudinal direction (vertical direction in Fig. 1 (a)) by the inversion processing, and the reinforcing edge material 5 is provided around the periphery. The core layer 2 is provided with.
Wooden surface materials 6 were attached to both front and back surfaces of the core layer 2, and decorative veneers 9 were attached to the peripheral edges of the reinforcing edge material 5 and the wooden surface material 6 to obtain the wooden fire door 1. . [Effect] The core member 3 is provided with three core member pieces 3a, 3 in the longitudinal direction.
By dividing into b and 3c, the warp of the whole core material 3 at the time of a fire decreases, and the warp of the wooden fire door 1 also decreases. As a result, the occurrence of a situation in which the fire spreads to the non-heated surface side and the fire spreads is suppressed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wooden fire door for fire doors used in buildings such as ordinary houses, apartment houses, public facilities, and shops.

[0002]

[Prior Art]

 Conventionally, as this type of fire door, a metal fire door including a metal door and a metal frame has been mainly used. However, this metal fire door does not have the softness and warmth of a wooden door, and since it is heavy, the metal fittings that hold it inevitably become solid and impair the appearance. was there.

On the other hand, wooden doors having a feeling of softness and warmth are widely used in applications where fireproofness is not required. Recently, fireproof wooden doors have been developed, but those mainly made of solid wood are bulky and liable to change due to dimensional changes during a fire, and gaps are easily created due to warpage. If fire protection is required, the thickness of the door becomes thicker, which reduces its practicality.

Therefore, a wood fire door in which a material that is lighter in weight than firewood and has a high fireproof property and a small dimensional change is used as a core material, and a wooden surface material is adhered to both surfaces of the core material is becoming popular. ..

[0005]

[Problems to be solved by the device]

 4A and 4B are views showing a state of deformation of a conventional wooden fire door during a fire, in which FIG. 4A is a front view and FIG. 4B is a sectional view taken along line EE of FIG.

However, in the wood fire door 1 in which both surfaces of the core material are combined with the wooden surface material, when heat is applied from one surface of the wood fire door 1 during a fire, the heating surface side of the core material is not heated. A temperature difference occurs between the surface side and the water retained in the core material moves to the non-heated surface side. As a result, a difference in expansion and contraction occurs between the heated surface side and the non-heated surface side of the core material, and the core material tends to warp. Then, as shown in FIG. 4, a warp a of the wooden fire door 1 occurs at a portion where the wooden fire door 1 is held and restrained weakly, mainly at the upper and lower corners of the handle 16 side, and the fire frame fixed to the wall 8 is fixed. Since the gap between 10 and the wooden fire door 1 becomes large, there is a risk that the fire will spread to the non-heated surface side from the gap and the fire will spread.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wooden fire door capable of minimizing warpage during a fire.

[0008]

[Means for Solving the Problems]

 That is, the wooden fire door (1) according to the present invention comprises a plurality of core pieces (3a, 3b, 3c, 3d) in the longitudinal direction (Fig. 1 (a) vertical direction, Fig. 3 (a) vertical direction). A wood-based surface material (6) is provided on both front and back surfaces of a core layer (2) composed of a non-adhesively bonded flat plate-shaped core material (3) and a reinforcing edge material (5) surrounding the core material. It is composed by sticking each.

It should be noted that the numbers in parentheses are for convenience of representing corresponding elements in the drawings, and therefore the present invention is not limited to the description in the drawings. The same applies to the "Claims for utility model registration" and "Action" columns.

[0010]

[Action]

 According to the present invention having the above-described structure, the core material (3) is divided into a plurality of core material pieces (3a, 3b, 3c, 3d), so that the warpage of the whole core material at the time of fire is reduced. The warp of (1) also acts to be reduced.

[0011]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a view showing an embodiment of a wooden fire door according to the present invention. (A) is a front view, (b) is a sectional view taken along the line AA of (a), and (c) is ( 2A is a cross-sectional view taken along the line BB of FIG. 2A, and FIG. 2 is a view showing a state where the wooden fire door shown in FIG. 1 is attached to a fireproof frame, FIG. ) Is a cross-sectional view taken along the line C-C, (c) is a cross-sectional view taken along the line D-D of (a), and FIG. 3 is a view showing another embodiment of the wooden fire door according to the present invention. FIG. 6B is a front view, FIG. 9B is a sectional view taken along line A′-A ′ in FIG. 9A, and FIG. 9C is a sectional view taken along line B′-B ′ in FIG.

As shown in FIG. 2, the fire door 4 has a wooden or metal fire prevention frame 10 fixed to a wall 8. A lower end of the fire prevention frame 10 is provided with a sled 13 horizontally. Has been. A wooden fire door 1 according to the present invention is openably and closably supported on a fire prevention frame 10 through a hinge 12. The wooden fire door 1 is provided on the left side of FIG. 2 (a), that is, on the side opposite to the hinge 12. A handle 16 is attached. As shown in FIGS. 2 (b) and 2 (c), the fire protection frame 10 has a recess formed over the entire circumference of the surface that comes into contact with the wooden fire door 1 in the closed state. The inside is filled with a heat-expandable heat-expandable material 15 containing sodium silicate, graphite, or the like as a main component.

As shown in FIG. 1, this wooden fire door 1 has a core layer 2, and the core layer 2 has three core material pieces 3a, 3b, 3c which are cut in a longitudinal direction by an inversion process. It is composed of a flat plate-shaped core member 3 which is non-adhesively joined (upward and downward in FIG. 1A) and a reinforcing edge member 5 surrounding the core member 3 (upper, lower, left and right). A wood-based surface material 6 is laminated on both front and back surfaces of the core layer 2 with an adhesive. Further, a decorative veneer 9 is attached to the outer peripheral end surface of the reinforcing edge member 5 and the outer peripheral end surface of the wooden surface member 6.

Here, as each of the core material pieces 3a, 3b, 3c, an inorganic or organic plate-like body having a specific gravity of about 0.25 to 0.6 can be considered, but depending on the required fire prevention property. It can be selected appropriately. In other words, for fire doors 4 that require high fire resistance, for example, fire-retardant fire doors with 60 minutes of fire resistance, inorganic plate-like bodies such as calcium silicate board and rock wool board are suitable, and so high fire resistance is required. An organic plate-like body such as a particle board is suitable for the fire doors 4 that are not fired, for example, Class B fire doors with fire resistance of 20 minutes. Further, the core material pieces 3a, 3b, 3c can be formed by combining not only a single material but also different materials (for example, calcium silicate plate and particle board). From the viewpoint of reducing the weight of the wooden fire door 1, a specific gravity of 0.6 or less is desirable, but when the specific gravity is 0.25 or less, the strength of the core material pieces 3a, 3b, 3c is too weak, and the wood material When combined with the surface material 6, the core material pieces 3a, 3b, 3c are easily broken, and the strength of the entire wooden fire door 1 is reduced.

The reinforcing edge member 5 is a wood material such as wood or laminated wood, and is a member that reinforces the wooden fire door 1. It should be noted that a concave portion may be formed in the longitudinal direction at a substantially central portion of the outer peripheral end surface of the reinforcing edge member 5, and the concave portion may be filled with the heat expansion material.

The wood surface material 6 is a wood material such as a plywood to which a veneer for makeup is attached, an MDF (medium density fiber board), or a board of laminated wood. Those with a mark (consisting of a frame part and an end plate part) and the like.

Further, the decorative veneer 9 is for making up the outer peripheral end surface of the wooden fire door 1, and usually has a thickness of about 0.6 mm, but it may be a decorative plywood or a thin wood plate. Needless to say, when the makeup is not required, the reinforcing edge member 5 may be used as it is without attaching the decorative veneer 9.

Since the wooden fire door 1 has the above-mentioned configuration, when heated from one side of the wooden fire door 1 in the event of a fire, the heating side and the non-heating side of the core material 3 expand and contract. Although there is a difference, since the core material 3 is divided into the three core material pieces 3a, 3b, and 3c as described above, the warpage of the whole core material 3 is larger than that of one core material 3. Therefore, the warp of the wooden fire door 1 is also reduced. As a result, the gap between the fireproof frame 10 and the wooden fire door 1 is small, and it is possible to prevent the situation where the fire spreads to the non-heated surface side and the fire spreads.

Example 1 In order to confirm the above effects, a particle board having a specific gravity of 0.45, a thickness of 30 mm, a width of 850 mm, and a length of 2000 mm (which complies with a particle board defined in JIS A 5908) is arranged in the longitudinal direction. Divide into 3 parts, and process the end faces by notching, and use particle board pieces with an effective length of 650 mm as core material pieces 3a, 3b, 3c, which are not cut in the longitudinal direction through the notches. Particle board with a width of 850 mm and a length of 1950 mm that is adhesively bonded is used as the core material 3, and a square piece of maple with a cross section of 30 mm × 25 mm is used as the reinforcing edge material 5, and further 2.7 mm thick × 900 mm wide × 2000 mm long A wooden fire door 1 (thickness: 35.4 mm × width: 900 mm × length: 2000 mm) was manufactured by using the decorative plywood as a wooden surface material 6.

Then, the wooden fire door 1 was attached to the fire prevention frame 10, and in that state, a fire resistance 20-minute heating test and an impact test were carried out in accordance with JIS A 1311 "Fireproof test method for fire doors for construction". There was no problem in flameproofness and structural stability, and it passed the Class O Fire Door. At this time, the warp of the upper end corner of the wooden fire door 1 on the handle 16 side was 6 mm.

Comparative Example 1 A wooden fire door 1 was manufactured by the same structure and method as in Example 1 except that one core material 3 (thickness 30 mm × width 850 mm × length 1950 mm) was used. In the same way as the above, the heating test was carried out by mounting it on the fire protection frame 10, the upper and lower corners of the handle 16 side of the wooden fire door 1 began to warp to the non-heating surface side in 10 minutes, and after 17 minutes the non-heating surface side. Flames occurred in the product, and the desired fire protection performance was not obtained. The warp of the upper corner of the wooden fire door 1 at this time was measured and found to be about 23 mm, which was larger than that of Example 1.

In addition, in the above-mentioned embodiment, the case where the core material 3 is divided into three pieces in the longitudinal direction and the non-adhesive joining method is the intermittent processing has been described. It suffices to divide it, and a non-adhesive joining method such as actual welding or the like may be adopted in addition to the phase inversion processing. For example, as shown in FIG. 3, four core material pieces 3a, 3b, 3c, 3d are non-adhesively bonded in the longitudinal direction (vertical direction in FIG. 3 (a)) by the actual machining to be the core material 3. It is also possible. In the wooden fire door 1 shown in FIG. 3, ventilation grooves 7 that connect the upper end and the lower end of the core layer 2 are formed on both the front and back sides of the core layer 2 along the upper and lower directions (longitudinal direction) of the core layer 2. One by one in a straight line, but by doing this, when heat is received from one side of the wooden fire door 1 in the event of a fire, the water retained in the core material 3 becomes water vapor and the ventilation groove is formed. Since it is possible to escape to the outside through 7, it is possible to prevent the occurrence of a situation in which water is filled between the core material 3 and the wooden surface material 6 as steam to cause an explosion. In addition to the fact that the core material 3 is divided into a plurality of pieces, it is possible to suppress the warp of the upper and lower corners of the wooden fire door 1.

Example 2 A fiber-containing calcium silicate plate having a specific gravity of 0.3, a thickness of 34 mm, a width of 850 mm, and a length of 2000 mm (in conformity with a calcium silicate heat insulating material specified in JIS A 9510) was longitudinally oriented. Divided into four, the end surface is actually processed, and the effective length is 487. Calcium silicate pieces of 5 mm in width and 850 mm in width and 1950 mm in length are used as core pieces 3a, 3b, 3c and 3d, which are non-adhesively bonded to each other in the longitudinal direction through the actual part. The calcium plate is used as the core material 3, the maple square material having a cross section of 34 mm x 25 mm is used as the reinforcing edge material 5, and the ventilation grooves 7 having a depth of 5 mm x a width of 3 mm are provided on both front and back sides of the core layer 2 and further thickened. A wooden fire door 1 (thickness 39.4 mm × width 900 mm × length 2000 mm) was manufactured by using a decorative plywood of 2.7 mm × width 900 mm × length 2000 mm as a wooden surface material 6.

Next, this wooden fire door 1 was attached to the fire prevention frame 10, and in that state, a fire resistance 1 hour heating test and an impact test were carried out in accordance with JIS A 1311 “Fireproof test method for building fire doors”. There was no problem in flameproofness and structural stability, and it passed the Class A fire door. The warp of the upper corner of the wooden fire door 1 at this time was 5 mm.

[0026]

[Effect of the device]

 As described above, according to the present invention, the plurality of core material pieces 3a, 3b, 3c, 3d are not bonded in the longitudinal direction (for example, the vertical direction of FIG. 1A, the vertical direction of FIG. 3A). Since the wood surface material 6 is adhered to each of the front and back surfaces of the core layer 2 including the joined flat plate-shaped core material 3 and the reinforcing edge material 5 surrounding the core material 3, the core is formed. Since the material 3 is divided into a plurality of core material pieces 3a, 3b, 3c, 3d, the warp of the whole core material 3 at the time of a fire is reduced and the warpage of the wooden fire door 1 is also reduced. It is possible to provide the wooden fire door 1 capable of suppressing the occurrence of a situation in which the fire spreads to the surface side and the fire spreads.

[Brief description of drawings]

1 is a view showing an embodiment of a wooden fire door according to the present invention, (a) is a front view, (b) is a sectional view taken along the line AA of (a), and (c) is (a). It is sectional drawing by the BB line of FIG.

FIG. 2 is a view showing a state where the wooden fire door shown in FIG. 1 is attached to a fire prevention frame, (a) is a front view, (b) is a cross-sectional view taken along line CC of (a), c) is D- of (a)
It is sectional drawing by the D line.

3A and 3B are views showing another embodiment of the wooden fire door according to the present invention, wherein FIG. 3A is a front view and FIG. 3B is A'-A 'in FIG.
Sectional drawing by the line, (c) is sectional drawing by the B'-B 'line of (a).

4A and 4B are diagrams showing a state of deformation of a conventional wooden fire door during a fire, in which FIG. 4A is a front view and FIG. 4B is a sectional view taken along line EE in FIG. 4A.

[Explanation of symbols]

 1 ... Wooden fire door 2 ... Core layer 3 ... Core material 3a, 3b, 3c, 3d ... Core material piece 5 ... Reinforcing edge material 6 ... Wood surface material

Claims (1)

[Scope of utility model registration request] 1. A plurality of core material pieces (3a, 3b, 3c, 3)
The front and back surfaces of the core layer (2) consisting of a flat plate-shaped core material (3) obtained by non-adhesively bonding d) in the longitudinal direction and a reinforcing edge material (5) surrounding the core material, on both front and back surfaces of wood. A wooden fire door constructed by sticking materials (6) to each other.