JP2009114655A - Supporting implement and supporting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To support a treadboard by suppressing the generation of a crack in the treadboard. <P>SOLUTION: This supporting implement includes: a metal supporting implement body 11 in which a treadboard mounting piece 12 for being mounted on the treadboard 1, and a supporting member mounting piece 13 for being mounted on supporting members 2 and 3 are provided almost orthogonally to each other, and in which a mounting hole 12a for the treadboard is provided in the treadboard mounting piece 12; a stress relaxing member 14 which includes a first annular portion 14a fitted into the mounting hole 12a, and a second annular portion 14b concentrically connected to the first annular portion 14a and covering a peripheral edge of the mounting hole 12a on the top surface of the supporting implement body 11, and which is composed of a material more flexible than the supporting implement body 11; and fixing means 16 and 17 which are provided with a screw mounting portion 17a allowing a screw 18 to be mounted to pass through the inside of the first annular portion 14a and reach the treadboard 1, and an abutting portion 17b abutting on the undersurface of the treadboard mounting piece 12 in the mounted state of the screw, and which make the second annular portion 14b sandwiched between the supporting implement body 11 and the treadboard 1, in the state of being mounted on the treadboard 1 by means of the screw 18. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a support and a support structure for supporting a wooden stair tread in a horizontal state.

There are various types of support structures for the above-described stair treads. For example, both ends of a wooden tread board are placed on a pair of side plates that are inclined and arranged on the upper stage. Both ends of the vertical kick plate are spanned between the lower surface of the front end of the tread plate and the upper surface or rear end surface of the rear end of the lower step plate, and the joint between the kick plate and the tread plate is fixed with a screw nail or the like The thing of the structure to perform is known (for example, refer patent document 1).
Japanese Patent Laid-Open No. 11-350691

  By the way, it is common practice to directly fix the above-described stepping plate to the step portions of the pair of side plates using screw nails or the like. In the case of this configuration, there is a problem that when the tread plate is expanded or contracted in the longitudinal direction due to a change in humidity or temperature, the tread plate portion fixed using screw nails or the like is likely to be cracked.

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a support and a support structure that can support the tread while suppressing the occurrence of cracks in the tread. .

  A support device according to claim 1 of the present invention is a support device for supporting a wooden stair tread board in a horizontal state on a vertical support member, and a tread board attachment piece attached to the tread board and a support member attachment attached to the support member A metal support body having one or two or more tread board mounting holes in the tread board mounting piece, and a tread board mounting hole fitted in the tread board mounting hole of the support body. From a material more flexible than the support tool main body, including one annular part and a second annular part concentrically connected to the first annular part and covering the peripheral edge of the tread plate mounting hole on at least the upper surface of the support tool main body A stress relief member, a fastening part attachment part to which a fastening part is attached so as to reach the tread board through the inside of the first annular part, and a contact part that abuts the lower surface of the tread board attachment piece in the attached state On the footboard In the state mounted by serial fastening elements, characterized in that it comprises a fixing means for clamping said second annular portion is between said support body treads.

  The support according to claim 2 of the present invention is the support according to claim 1, wherein the fixing means includes a lower fixing member provided on the lower side with the stress relaxation member interposed therebetween, and an upper side provided on the upper side. And a connecting portion that penetrates the inside of the first annular portion and reaches the other of the two fixing members is provided on one of the fixing members, and the connecting portion and the other fixing member are engaged with each other. The fastening part mounting portion is provided on the lower fixing member.

  The support according to claim 3 of the present invention is the support according to claim 2, wherein the upper fixing member is formed by flattening a portion sandwiched between the tread plate and the stress relaxation member. It is characterized by.

  According to a fourth aspect of the present invention, there is provided the support tool according to any one of the first to third aspects, wherein an upper end of the fastening part mounting portion is in contact with a lower surface of the first annular portion. To do.

  According to a fifth aspect of the present invention, there is provided the support device according to any one of the first to fourth aspects, wherein the support device main body superposes both ends of two U-shaped members and The overlapping portions are connected so as to be swingable, and one U-shaped member is configured to be adjustable in angle with respect to the other U-shaped member, and the intermediate portion of one U-shaped member is attached to the support member. One end of one U-shaped member that functions as a piece and one end of the other U-shaped member connected to this function as the tread plate mounting piece.

  A support structure according to a sixth aspect of the present invention is characterized in that the footboard is supported by the support tool according to any one of the first to fifth aspects.

  In the case of the support and the support structure according to the present invention, when the tread plate mounting piece of the support main body is arranged on the lower side of the tread plate and the fastening component is fastened to the upper tread plate, the abutting portion is on the lower surface of the tread plate mounting piece. In addition to the contact, the tread plate and the support tool main body are disposed with the second annular portion of the stress relaxation member interposed therebetween, so that the tread plate is supported in a state of being horizontally movable with respect to the support tool main body. Further, the front end portion is fixed to the tread plate and the fastening component attached to the fastening component attachment portion is movable according to the radial deformation of the first annular portion in the tread plate attachment hole. Therefore, even if the tread is stretched or contracted in the longitudinal direction due to changes in humidity or temperature, it is possible to support the tread while suppressing the occurrence of cracks in the tread.

  In the case of using the support device according to claim 2, when the connecting portion and the other fixing member are locked, and thereby the lower fixing member and the upper fixing member are connected via the connecting portion, both the fixing members are attached to the tread plate. The piece and the stress relaxation member are sandwiched and held. Therefore, when carrying a support tool, a support tool main body, a stress relaxation member, and a fixing means do not fall off.

  In the case of the support tool according to claim 3, since the portion sandwiched between the tread board of the upper fixing member and the stress relaxation member is flat, the resistance of the horizontal movement of the tread board with respect to the support tool body is reduced and smooth horizontal Can move.

  In the case of the support tool according to claim 4, the upper end of the fastening part mounting portion is in contact with the lower surface of the first annular part, so that the first annular part can be sandwiched between the upper end of the fastening part mounting part and the tread plate. It is possible to prevent the first annular portion from escaping to the opposite side of the tread, and the stress relieving member can be moved even if the tread, the fixing member, and the fastening part move horizontally to relieve the stress acting on the tread. Prevents abnormal deformation and damage.

  In the case of the support device according to claim 5, both ends of the two U-shaped members are overlapped, and each overlapped portion is connected so as to be swingable, and is formed in a rectangular shape. When attaching the part that functions as the mounting piece to the support member, the part that functions as the footboard mounting piece is on the upper side, and the part parallel to the part that functions as the footboard mounting piece is on the lower side, so that the supporting strength of the footboard is improved. . Furthermore, since the middle part of one U-shaped member whose angle can be adjusted functions as a support member mounting piece, it is difficult to be limited by the angle when the support member mounting piece is attached to the column located at the center of the spiral staircase. .

  The present invention will be specifically described below.

  FIG. 1 is a view of a spiral staircase portion X as a support structure for supporting a step board for staircases with a support according to the present embodiment as viewed obliquely from below, and FIG. 2 is a view of the spiral staircase portion X of FIG. FIG. 3 is a perspective view showing a support that supports the outside of the footboard, FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3, and FIG. 5 is a support that supports the inside of the footboard (center side of the stairs). FIG. 6 is a sectional view taken along line VI-VI in FIG. 7A is a plan view showing the upper fixing member, FIG. 7B is a sectional view taken along line BB in FIG. 7A, FIG. 7C is a front view showing the upper fixing member, and FIG. FIG. 8A is a bottom view showing the upper fixing member, FIG. 8A is a plan view showing the lower fixing member, FIG. 8B is a cross-sectional view taken along line AA of FIG. 8A, and FIG. The front view which shows a fixing member, the same (d) is a bottom view which shows a lower side fixing member, FIG. 9 (a) is a top view which shows a stress relaxation member, (b) is CC line of (a). FIG. 4C is a front view showing the stress relaxation member, and FIG. 4D is a bottom view showing the stress relaxation member.

  In this embodiment, it is the structure which supports the tread board 1 using the pillar 2 as a supporting member located in the center of the spiral staircase part X, and the wall 3 as a surrounding supporting member. And as a support tool, two types, the outer side support tool 10 which attaches to the wall 3 and supports the outer side of the footboard 1, and the inner side support tool 20 which attaches to the pillar 2 and supports the inner side of the footboard 1 are used. (See FIGS. 1 and 2).

  The footboard 1 is configured by combining a square footboard 1A for a landing, a right-angled triangular footboard 1B for a staircase portion, and a square footboard 1C. belongs to. Also, a wooden kick plate 1D is provided in the vertical direction between the adjacent footboards 1A, 1B, 1C.

  The outer support 10 includes a metal support body 11 having a substantially L-shaped cross section, a stress relaxation member 14 attached to the support body 11, an upper fixing member 16 and a lower fixing member 17 as fixing means. (See FIGS. 3 and 4).

  The support body 11 has a tread plate attachment piece 12 attached to the tread plate 1 and a support member attachment piece 13 attached to the wall 3 substantially orthogonally, and the tread plate attachment piece 12 is provided with three tread plate attachment holes 12a. The support member mounting piece 13 is provided with two upper and lower support member mounting holes 13a at three locations. In addition, the number of the tread board attachment holes 12a and the support member attachment holes 13a is selected to be 1 or any number of 2 or more.

  The stress relaxation member 14 is made of a material that is more flexible than the support body 11, for example, foam rubber, and includes a first annular portion 14 a that fits inside the tread plate mounting hole 12 a of the support body 11, and a concentricity with the first annular portion 14 a. And a second annular portion 14b that covers the peripheral portion of the tread plate attachment hole 12a on the upper surface of the support body 11 (see FIG. 9). You may provide a 2nd annular part in two places up and down so that not only the upper surface of the support tool main body 11 but the peripheral part of the tread board attachment hole 12a in the lower surface of the support tool main body 11 may be covered. The first annular portion 14a is a cylindrical portion inside the stress relaxation member 14, and the second annular portion 14b is a flange portion protruding outward from the upper outer peripheral surface of the cylindrical portion.

  The lower fixing member 17 is made of, for example, a synthetic resin, and is a fastening part that penetrates the inside of the first annular portion 14a to reach the tread plate. In this embodiment, the screw mounting portion 17a to which the screw 18 is attached, A contact portion 17b that contacts the lower surface of the tread plate mounting piece 12 when the screw 18 is attached, and a first portion between the support body 11 and the tread plate 1 when the screw 18 is attached to the tread plate 1. It is comprised so that the cyclic | annular part 14a may be clamped. Reinforcing pieces 17c are provided at the upper end to connect a plurality of locations of the contact portion 17b, in the illustrated example, 6 locations (see FIGS. 4 and 8).

  The upper fixing member 16 is made of, for example, a synthetic resin, and is provided with a connecting portion 16a that penetrates the inside of the first annular portion 14a and reaches the screw mounting portion 17a of the lower fixing member 17, and the connecting portion 16a and the screw The mounting portion 17a is locked. Further, the upper fixing member 16 is formed as a flat portion 16b between the tread board 1 and the stress relaxation member 14, and the inside of the connecting portion 16a is a mounting hole 16c for attaching a screw 18 ( (See FIGS. 4 and 7).

  One inner support 20 includes a metal support body 21 assembled in a rectangular shape, a stress relaxation member 14 attached to the support body 21, an upper fixing member 16 and a lower fixing member as fixing means. And a member 17 (see FIGS. 5 and 6). The stress relieving member 14, the upper fixing member 16 and the lower fixing member 17 are exactly the same as those of the outer support 10 and will not be described.

  The support tool body 21 superposes both ends 22a, 22b of the U-shaped member 22 and both ends 23a, 23b of the U-shaped member 23, and overlaps portions of the end 22a and the end 23a, The end portion 22b and the overlapping portion of the end portion 23b are connected via swingable connecting portions 24a and 24b (see FIGS. 5 and 6). Therefore, one U-shaped member 22 is configured to be adjustable in angle with respect to the other U-shaped member 23. Here, by providing the support member mounting hole 22d in the intermediate portion 22c of one U-shaped member 22, the intermediate portion 22c can function as a support member mounting piece. Further, one end portion 22a of one U-shaped member and one end portion 23a of the other U-shaped member 23 connected thereto are connected to one end portion 23a of the other U-shaped member 23 in the illustrated example. By forming the mounting hole 23d and providing the stress relaxation member 14, the upper fixing member 16, and the lower fixing member 17 there, the one end 23a can function as a tread plate mounting piece. As the numbers of the support member mounting holes 22d and the tread plate mounting holes 23d, one or an arbitrary number of 2 or more is selected.

  A through hole 23e provided in the other end portion 23b of the other U-shaped member 23 at a position corresponding to the tread plate mounting hole 23d is used for inserting a screw 18 or a screwdriver for rotating the screw 18. .

  Accordingly, the tread plate mounting hole 12a of the support member mounting piece 13 of the outer support 10 thus configured is fixed to the wall 3 with screws 19 and the tread plate mounting hole 12a of the tread plate mounting piece 12 is screwed to the lower surface of the tread plate 1. By stopping 18, the outside of the tread board 1 is supported by the wall 3. On the other hand, the tread plate 1 is attached to the spiral staircase by fixing the support member mounting hole 22d of the inner support tool 20 to the pillar 2 with the screw 19 and the tread plate mounting hole 23d to the bottom surface of the tread plate 1 with screws 18. In this attached state, the abutment portion 17b abuts on the lower surface of the tread plate attachment piece 12, and the tread plate 1 and the support body 11 are disposed with the second annular portion 14b of the stress relaxation member 14 interposed therebetween. The tread board 1 is supported in a state in which it can move horizontally with respect to the support body 11. Further, the tip 18 is fixed to the tread plate 1 and the screw 18 attached to the screw attachment portion 17a is movable according to the radial deformation of the first annular portion 14a in the tread plate attachment holes 12a and 23d. is there. Therefore, even if the tread board 1 expands and contracts in the longitudinal direction due to changes in humidity and temperature, the tread board 1 can be supported while suppressing the occurrence of cracks in the tread board 1.

  Moreover, in this embodiment, if the connection part 16a and the lower side fixing member 17 are latched and this connects the lower side fixing member 17 and the upper side fixing member 16 via the connection part 16a, both fixation will be carried out. Since the members 16 and 17 hold the tread plate mounting piece 12 and the stress relaxation member 14 therebetween, the support body 11, 21, the stress relaxation member 14, and the fixing members 16 and 17 drop off when carrying the support. There is nothing to do. Further, since the portion sandwiched between the foot plate 1 and the stress relaxation member 14 of the upper fixing member 16 is a flat portion 16b, the resistance of the horizontal movement of the foot plate 1 with respect to the support body 11 is reduced and smooth horizontal Can move. Furthermore, since the upper end of the screw mounting portion 17a contacts the lower surface of the first annular portion 14a, the first annular portion 14a can be sandwiched between the upper end of the screw mounting portion 17a and the tread plate 1, and the first annular portion It is possible to prevent the portion 14a from escaping to the side opposite to the tread board 1, and even if the tread board 1, the fixing members 16, 17 and the screw 18 move horizontally to relieve the stress acting on the tread board 1, the stress The relaxation member 14 is prevented from being abnormally deformed and broken.

  Furthermore, in the case of the present embodiment, the inner support 20 can superimpose both ends 22a and 23a, 22b and 23b of the two U-shaped members 22 and 23 and can swing each overlapping portion. In addition, when the portion (intermediate portion 22c) that functions as a support member mounting piece is attached to the pillar 2, the portion (one end portion 23a) that functions as a tread plate mounting piece is on the upper side. The support strength of the tread board 1 is improved by setting the part (the other end part 23 b) parallel to the part (one end part 23 a) functioning as the tread board mounting piece to the lower side. Furthermore, since the intermediate part 22c of one U-shaped member 22 whose angle can be adjusted functions as a support member mounting piece, the angle at the time of attaching the intermediate part 22c to the column 2 located at the center of the spiral staircase is limited. It is hard to receive.

  In the above-described embodiment, the support body 11 having a substantially L-shaped cross section is used for the outer support 10, but the present invention is not limited to this, and a support body having a rectangular appearance is used. Also good. Moreover, although the support tool main body 21 in which the external appearance was formed in the rectangular shape was used for the inner side support tool 20, this invention is not restricted to this, You may use the support tool main body of a general | schematic cross-section L-shape.

  In the above-described embodiment, the case where the treadle is attached to the spiral staircase portion as an example of the support structure is described as an example. However, the present invention is not limited to this, and the present invention can be applied to the case where the treadle is attached to the linear staircase portion. it can. However, in this case, the outer support 10 is attached to each of the pair of stepped side plates arranged at an inclination, and the footboard is attached on the outer support 10. That is, the inner support 20 is omitted.

  Further, in the above-described embodiment, the screw 18 is used for the fastening part, but the present invention is not limited to this. For example, the present invention can be similarly applied to the case where screw nails or ordinary nails are used.

It is the figure which looked at the spiral staircase part as a support structure which supports the tread board for stairs with the support tool which concerns on one Embodiment of this invention from diagonally downward. It is the figure which looked at the spiral staircase part of FIG. 1 from right below. It is a perspective view which shows the support tool which supports the outer side of a tread board. It is sectional drawing by the IV-IV line of FIG. It is a perspective view which shows the support tool which supports the inner side of a tread board. It is sectional drawing by the VI-VI line of FIG. (A) is a top view which shows an upper side fixing member, (b) is sectional drawing by the BB line of (a), (c) is a front view which shows an upper side fixing member, (d) is a bottom face which shows an upper side fixing member. FIG. (A) is a top view which shows a lower side fixing member, (b) is sectional drawing by the AA line of (a), (c) is a front view which shows a lower side fixing member, (d) is a lower side fixing member. FIG. (A) is a top view which shows a stress relaxation member, (b) is sectional drawing by CC line of (a), (c) is a front view which shows a stress relaxation member, (d) is a bottom face which shows a stress relaxation member. FIG.

Explanation of symbols

X Spiral staircase (support structure)
1, 1A, 1B, 1C Footboard 2 Pillar (supporting member)
3 walls (support members)
DESCRIPTION OF SYMBOLS 10 Outer support tool 11 Support tool main body 12 Foot plate attachment piece 12a Foot plate attachment hole 13 Support member attachment piece 13a Support member attachment hole 14 Stress relaxation member 14a First annular portion 14b Second annular portion 16 Upper fixing member (fixing means)
16a connecting part 17 lower fixing member (fixing means)
17a Screw mounting portion 17b Abutting portion 18 Screw (fastening part)
20 Inner support tool 21 Support tool body 22, 23 U-shaped member 22a, 22b, 23a, 23b End

Claims (6)

A support tool for supporting a wooden stair tread on a vertical support member in a horizontal state,
A metal support body having a tread plate attachment piece attached to the tread plate and a support member attachment piece attached to the support member substantially orthogonally, wherein the tread plate attachment piece is provided with one or more tread plate attachment holes;
A first annular portion that fits inside the tread plate attachment hole of the support tool main body, and a second annular portion that is concentrically connected to the first annular portion and covers a peripheral edge portion of the tread plate attachment hole on at least the upper surface of the support tool main body. A stress relieving member made of a material that is more flexible than the support body, and an annular portion;
A fastening part mounting part to which a fastening part is attached so as to pass through the inside of the first annular part and reach the tread board, and a contact part that comes into contact with the lower surface of the tread board mounting piece in the attached state; and A support device comprising fixing means for sandwiching the second annular portion between the support device main body and the foot plate when attached to the foot plate with the fastening parts. The support according to claim 1,
The fixing means includes a lower fixing member provided on the lower side across the stress relaxation member and an upper fixing member provided on the upper side, and the inside of the first annular portion is disposed on one of the two fixing members. A connecting portion that penetrates and reaches the other of the two fixing members is provided, the connecting portion and the other fixing member are locked, and the fastening component mounting portion is provided on the lower fixing member. A support tool characterized by. The support according to claim 2, wherein
The upper fixing member is formed by flattening a portion sandwiched between the tread plate and the stress relaxation member. The support according to any one of claims 1 to 3,
An upper end of the fastening part mounting portion is in contact with a lower surface of the first annular portion. The support according to any one of claims 1 to 4,
The support body is configured to superimpose both ends of two U-shaped members and connect the overlapping portions so as to be able to swing, and one U-shaped member is connected to the other U-shaped member. Angle adjustment is possible, the middle part of one U-shaped member functions as the support member mounting piece, one end of one U-shaped member and the other U-shaped member connected to this One end part functions as said tread board attachment piece, The support tool characterized by the above-mentioned.   A support structure, wherein the tread plate is supported by the support tool according to claim 1.

Images