JP2005030082A - Stairs unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stairs unit for improving assembling accuracy of treads and an open string, and capable of firmly fixing the treads and the open string. <P>SOLUTION: This stairs unit has a plurality of treads 20 for arranging an installing member 22 on an under surface, and the open string 11 having a plurality of receiving parts 12 for supporting the treads 20. A longitudinally extending groove 13 is arranged on an upper surface in the receiving parts 12, and the installing member 22 engages with the groove 13. Vertical and lateral positions of the treads 20 can be determined by engaging the installing member 22 with the groove 13, and a longitudinal position can be determined by abutting the treads 20 on the open string 11, so that stairs can be efficiently assembled. Since the groove 13 engages with the installing member 22, the adhesive area is increased, so that the open string 11 and the treads 20 can be further firmly adhered to each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a stair unit that constitutes a stair that supports a step board with a spar.

  Wooden staircases in buildings such as houses are generally constructed with a structure that supports the tread board with a girder. Side girder stairs that support the side part of the tread board with a side girder and the bottom surface of the tread board with a power girder There is a power girder staircase to support in.

  Some of the power girder stairs generally support the tread board with a receiving material attached to the power girder. In addition, there is also a type in which a force girder is processed like a saw tooth and is supported by a smooth girder (for example, see Patent Document 1). As shown in FIG. 7, the scabbard girder is usually formed by providing a notch 32 in a rod-like member 31 or attaching a receiving member 33.

The power girder supports the tread board on the bottom surface, so that the grain of the tread board can be seen beautifully. Some force girders support both ends of the footboard, while others support the center.
Japanese Patent Laid-Open No. 11-303217 (page 7, FIG. 4, FIG. 6)

  However, it is troublesome to attach the receiving material to the rod-shaped member to create the spar, because it is necessary to accurately position and attach the receiving material.

  Further, in the power girder staircase, in order to support the lower surface of the tread board, it is necessary to position and attach the tread board in the lateral direction, which is troublesome.

  Further, since the treadle is supported only by the power girder, it is necessary to firmly fix the treadle to the power girder. In particular, in a power girder staircase with a shape that supports the tread board only at the center part, for example, when it rides on the right side of the tread board, tensile force acts on the left side of the joint between the tread board and the receiving material or the counter girder. It was necessary to fix it more firmly than when supporting it.

  An object of the present invention is to provide a stair unit that can improve the assembly accuracy of a tread board and a counter girder and can firmly fix the tread board and the counter girder.

  In order to solve the above-mentioned problems, the invention according to claim 1 of the present invention is a step unit, for example, as shown in FIG. 2, a plurality of step plates 20 provided with attachment members 22 on the lower surface, And a support girder 11 having a plurality of receiving portions 12 for supporting the tread plate 20. The receiving portion 12 is provided with a groove 13 extending in the front-rear direction on the upper surface, and the attachment member 22 is engaged with the groove 13. It is characterized by being.

  According to the first aspect of the present invention, since the attachment member 22 on the lower surface of the tread plate 20 is engaged with the groove 13 provided in the receiving portion 12 of the sheathing girder 11, the attachment member 22 is engaged with the groove 13. Thus, the vertical and horizontal positions of the tread plate 20 can be determined, and the front and rear positions can be determined by bringing the tread plate 20 into contact with the spar 11 so that the stairs can be assembled with high accuracy. Moreover, since the groove | channel 13 and the attachment member 22 engage, an adhesion area can be increased and the spar 11 and the footboard 20 can be adhere | attached more firmly.

  The invention according to claim 2 is the staircase unit according to claim 1, wherein a contact surface (slope 21 a) that contacts the inclined surface 11 a on the upper side of the sheathing girder 11 on the front edge of the lower surface of the tread plate 20. And a notch 21 formed of vertical surfaces 21b and 21b in contact with the left and right side surfaces (side surfaces 11b and 11b) of the sheathing girder 11.

  According to the second aspect of the present invention, the abutment surface (slope 21a) that abuts the inclined surface 11a on the upper side of the weir 11 at the center part of the lower surface of the tread 20 is provided on the lower surface of the tread plate 20. Since the notches 21 including the vertical surfaces 21b and 21b that contact the left and right side surfaces (side surfaces 11b and 11b) are provided, the tread plate 20 can be supported by the spar 11 on three surfaces and can be stabilized. Further, the bonding area between the notch 21 and the spar 11 can be further increased, and the spar 11 and the tread plate 20 can be bonded more firmly.

  A third aspect of the present invention is the staircase unit according to the first or second aspect, wherein the sheathing girder 11 and the receiving portion 12 are integrally formed.

  Here, as a method of integrally manufacturing the spar girder 11 and the receiving portion 12, for example, there is a method of using NC (Numerical Control) controlled milling.

  According to the third aspect of the present invention, since the receiving portion 12 and the weir girder 11 of the weir 11 are integrally formed, it is not necessary to accurately position and attach the receiving 12.

  Invention of Claim 4 is a stair unit as described in any one of Claims 1-3, Comprising: The said spar 10 and the said footboard 20 consist of a plywood or a laminated material, and the surface is the wood grain decorative material 14 It is characterized by being covered with.

  According to the fourth aspect of the present invention, since the spar girder 11 and the tread board 20 are made of plywood or laminated material, the cost of the stair unit can be reduced. Moreover, by covering the surface with the wood grain decorative material 14, the laminated pattern of the plywood or the laminated material can be hidden, and the same aesthetic feeling as that of the single material can be given.

  Invention of Claim 5 is a stair unit as described in any one of Claims 1-4, Comprising: The kick board (not shown) respectively provided between these stepping boards 20 is further provided. It is characterized by that.

  According to the fifth aspect of the present invention, since the kick plates provided between the plurality of foot plates 20 are further provided, it is possible to avoid dropping an object from between the foot plates 20.

  According to the first aspect of the present invention, since the attachment member on the lower surface of the tread plate is engaged with the groove provided in the receiving portion of the sheathing girder, the attachment member is engaged with the groove so that the upper and lower and left and right positions of the tread plate are engaged. In addition, the front and rear positions can be determined by bringing the tread plate into contact with the further beam, and the steps can be assembled with high accuracy. Further, since the groove and the mounting member are engaged, the bonding area can be increased, and the spar and the footboard can be bonded more firmly.

  According to the second aspect of the present invention, the same effect as that of the first aspect of the present invention can be obtained. Since the notch which consists of a contact surface and the vertical surface which contact | abuts the right-and-left side surface of a shearing girder is provided, the tread board 20 can be supported by the sacrificial girder 11 on three surfaces, and can be stabilized. In addition, the notch and the spar can be fitted together to further increase the bonding area, and the spar and the step board can be bonded more firmly.

  According to the invention described in claim 3, since the same effect as that of the invention described in claim 1 or 2 can be obtained and the receiving part of the spar and the spar are formed integrally, the receiving part can be accurately formed. There is no need to position and install.

  According to the invention described in claim 4, since the same effect as in the invention described in any one of claims 1 to 3 can be obtained, and the siding girder and the footboard are made of plywood or laminated material, Cost can be reduced. Further, by covering the surface with a wood grain decorative material, the laminated pattern of plywood or laminated material can be concealed and the same aesthetic feeling as that of a single material can be given.

  According to the invention described in claim 5, since the same effect as the invention described in any one of claims 1 to 4 can be obtained, and further provided with a kick plate provided between each of the plurality of treads, You can avoid dropping objects from between the treads.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the stair unit of the present invention includes a spar 11 and a plurality of footboards 20.

  The sasara girder 11 is diagonally arranged in the building frame, and the inclination of the stairs is determined by the inclination thereof. A receiving portion 12 is provided on the inclined surface 11 a on the upper side of the sheath beam 11.

  As shown in FIG. 2A, the receiving portion 12 protrudes from the inclined surface 11 a, and the upper surface thereof is formed to be horizontal when the further beam 11 is attached to the building frame. In addition, a substantially rectangular parallelepiped groove 13 that is long in the front-rear direction is provided on the upper surface of the receiving portion 12. The position of the groove 13 may be provided at either the left or right end of the upper surface, or may be provided at the center of the upper surface as shown in FIG.

  The receiving portion 12 is formed integrally with the spar girder 11 using NC (Numerical Control) controlled milling or the like. In addition, when the spar 11 is formed of plywood, the surface may be covered with an abrasion-resistant wood grain decorative material after the formation.

  For example, as shown in FIG. 4, the covering with the wood grain decorative material is formed by placing a wood beam cosmetic material 14 in which the formed girder 11 is placed with the receiving portion 12 facing upward and a hole 15 is formed in a portion corresponding to the receiving portion 12. This can be done by covering from above and pasting.

  As shown in FIG. 2 (b), the tread plate 20 is provided with a notch 21 including a slope 21 a and vertical surfaces 21 b and 21 b at the center portion of the bottom surface on the side of the weir 11. In a state where the tread plate 20 is attached to the sheathing girder 11, the notch 21 is engaged with the sheathing girder 11.

  The inclined surface 21a is inclined in the front-rear direction, and the inclination is equal to the inclination of the inclined surface 11a of the saddle girder 11 attached to the building frame. The inclined surface 21 a abuts on the inclined surface 11 a in a state where the notch 21 is engaged with the spar 11.

  The widths of the vertical surfaces 21b and 21b are equal to the width of the counter beam 11, and the side surfaces 11b and 11b are in contact with the notch 21 engaged with the counter beam 11.

  A mounting member 22 having a substantially rectangular parallelepiped shape that is long in the front-rear direction is provided behind the notch 21 on the lower surface of the tread plate 20. The width of the mounting member 22 is substantially equal to the width of the groove 13 of the receiving portion 12 of the spar 11 and the mounting member 22 engages with the groove 13. By engaging the attachment member 22 that is long in the front-rear direction with the groove 13 that is long in the front-rear direction, the position and angle in the lateral direction of the tread plate 20 with respect to the sheathing girder 11 can be determined.

  The length and height of the attachment member 22 are preferably the same as those of the groove 13. If the length and height of the attachment member 22 are approximately the same as those of the groove 13, there are few gaps left after the tread plate 20 is attached to the further spar 11, and the contact area is increased. For this reason, when an adhesive is used to fix the tread plate 20 and the spar girder 11, a large bonding area can be taken.

  The position of the attachment member 22 is provided in accordance with the position of the groove 13 of the receiving portion 12, and in FIG. 2B, it is provided behind either the left or right end of the notch 21, but for example, FIG. When the groove 13 is provided at the center of the upper surface of the receiving portion 21 as shown in (a), it may be provided at a corresponding position behind the notch 21 as shown in FIG.

  The tread plate 20 can also be integrally formed using an NC-controlled milling cutter or the like. The attachment member 22 may be integrally formed, or may be attached to the tread plate 20 with a wooden screw or the like. When the plywood is used as the structural core material, the surface may be covered with an abrasion-resistant wood grain decorative material except for the notch 21 and the attachment member 22.

  In addition, although the tread board 20 is described in the rectangular parallelepiped shape in FIG.2 (b) and FIG.3 (b), if it is flat form, it can be made into arbitrary shapes, such as circular and an ellipse.

  Next, how to assemble the stair unit of the present invention will be described. First, the sasara girder 11 is attached to the building frame. The upper end of the sasara girder 11 is fixed to the receiving beam 2 on the upper floor or between the upper floor and the lower floor. The fixing method to the receiving beam 2 is arbitrary. For example, as shown in FIG. 5, the receiving beam 2 and the upper end of the spar 11 may be formed into a fitting shape, and both may be fitted and fixed. Or you may fix with a volt | bolt etc.

  The lower end of the sasara girder 11 is fixed to the landing 3 or the floor 3 on the lower floor. Although the fixing method to the floor 3 is arbitrary, for example, as shown in FIG. 6, a wooden corner dowel 5 is fixed to the floor 3 with a wooden screw 6 or the like, and the same shape as the corner dowel 5 is formed at the lower end of the spar 11. A notch 21 may be provided and fixed by fitting. Further, after the fitting, the spar 11 may be fixed to the corner dowel 5 with a wood screw 7 or the like.

  When the sasara girder 11 is attached to the building frame, the treads 20 are sequentially attached to the sasara girder 11.

  First, the attachment member 22 is engaged with the groove 13 of the receiving portion 12 of the sheath beam 11. Then, the lateral position and angle of the tread plate 20 with respect to the spar 11 are determined, and the lower surface of the tread plate 20 and the upper surface of the receiving portion 12 come into contact with each other, so that the vertical position is determined. Next, when the inclined surface 21a of the tread plate 20 is brought into contact with the inclined surface 11a of the sheathing girder 11, the front-rear position of the tread plate 20 with respect to the cage girder 11 is determined as shown in FIG. 2 (c) or FIG. 3 (c).

  When the position of the tread board 20 is determined, the stool girder 11 and the tread board 20 are fixed with screws or the like. In addition, you may use an adhesive agent together when fixing. Finally, the receiving portion 12 and the attachment member 22 are covered with a wood grain decorative material. The remaining tread plate 20 is fixed to the spar 11 in the same manner.

  When all the footboards 20 are attached to the further beam 11, the handrail 4 is attached as necessary. The stair unit is completed as described above. According to the stair unit of the present invention, the mounting member 22 on the lower surface of the tread plate 20 is engaged with the groove 13 of the receiving portion 12 of the swirl girder 11 to determine the vertical and horizontal positions of the tread plate 20, and the tread plate 20 is advanced. Since the front and rear positions can be determined by bringing them into contact with the spar 11 and the stairs can be assembled with high accuracy. Moreover, since the groove | channel 13 and the attachment member 22 engage, an adhesion area can be increased and the spar 11 and the footboard 20 can be adhere | attached more firmly.

  Further, the tread plate 20 can be supported by the spar 11 on three sides and can be stabilized. In addition, the notch 21 and the spar 11 can be engaged to further increase the bonding area, and the spar 11 and the footboard 20 can be more firmly bonded.

  In addition, you may attach a kick board between each tread board 20, if needed. By providing the kick plate, it is possible to avoid dropping an object from between the tread plates 20.

  1 to 2, two spar girders 11 are drawn, but one spar spar 11 may be provided or a plurality of spar girders 11 may be provided. Further, the mounting member 22 or the notch 21 of the tread plate 20 may be provided at both left and right ends, and the two right and left girders 11 may support the left and right ends of the tread plate 20. In addition, it is needless to say that specific detailed structures and the like can be appropriately changed.

An example of the stair unit of the present invention is shown, and is a perspective view thereof. It is a figure which shows the example of a combination of the sagittal girder and tread board of a stair unit, (a) is a perspective view which shows the principal part of a sagittal girder, (b) is a perspective view which shows a tread board, (c) is It is a perspective view which shows the engagement state of a scabbard and a tread board. It is a figure which shows the example of a combination of the sagittal girder and tread board of a stair unit, (a) is a perspective view which shows the principal part of a sagittal girder, (b) is a perspective view which shows a tread board, (c) is It is a perspective view which shows the engagement state of a scabbard and a tread board. It is a perspective view which shows the method of coat | covering a sasara girder with a wood grain decorative material similarly. It is a side view which shows the attachment structure to the building frame of a sasara girder similarly. It is an enlarged view of A circle part in FIG. It is a perspective view which shows the preparation method of the conventional sasara girder.

Explanation of symbols

11 Sasara Girder 11a Inclined surface 11b Side surface 12 Receiving portion 13 Groove 14 Wood grain decorative material 20 Tread plate 21 Notch 21a Inclined surface 21b Vertical surface 22 Mounting member

Claims (5)

  A plurality of footboards provided with attachment members on the lower surface, and a saddle girder provided with a plurality of receiving parts for supporting the footboards, the receiving parts are provided with grooves extending in the front-rear direction on the upper surface, A stair unit that is engaged with the groove.   The notch which consists of a contact surface which contact | abuts the upper inclined surface of the said spar and the vertical surface which contact | abuts the side surface of the said spar is provided in the said tread board lower surface front edge part. Stairs unit.   The stair unit according to claim 1 or 2, wherein the sagittal girder and the receiving portion are integrally formed.   The stair unit according to any one of claims 1 to 3, wherein the sagittal girder and the tread board are made of plywood or laminated material, and the surface is covered with a wood grain decorative material.   The stair unit according to any one of claims 1 to 4, further comprising a kick plate provided between each of the plurality of footboards.

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