JP2018158469A - Laminated lumber, manufacturing method of the same and handrail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laminated lumber, a manufacturing method of the same and a handrail capable of improving the bending strength and the linearity while reducing costs and improving the yield.SOLUTION: While first lamina pieces 10a-10c cut away from a first lamina block and second lamina pieces 11a-11c cut away from a second lamina block are connected each other in an X direction to configure rigid joint members 21-23 having connection parts 25a, 25b, the plurality of rigid joint members 21-23 are connected each other in a Y direction and the connection parts 25a, 25b of the rigid joint member 21-23 adjacent to each other at least in the Y direction are deviated from each other in the X direction.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a laminated material, a method for manufacturing the laminated material, and a handrail.

  For example, a laminated material may be used for a wooden interior member used for a handrail of a staircase (for example, refer to the following Patent Document 1). For example, the laminated lumber is formed by joining (laminating) a plurality of lamina pieces cut from a log in the longitudinal direction to form a plurality of seam members, and then joining the transverse members in a direction perpendicular to the longitudinal direction (transverse) Formed).

JP 2003-293542 A

  By the way, when a laminated material is employed for a long member such as a handrail, bending strength against a load acting during use, suppression of warpage accompanying expansion and contraction (linearity), and the like are particularly required. However, the above-described conventional technology still has room for improvement in terms of improving bending strength and linearity after reducing cost and improving yield.

  Therefore, the present invention has been made in consideration of the above-described circumstances, and is intended to reduce the cost and improve the yield, and can improve the bending strength and linearity. The purpose is to provide a manufacturing method and a handrail.

In order to solve the above problems, the present invention employs the following aspects.
The laminated material which concerns on 1 aspect of this invention has the 1st lamina piece cut out from the 1st lamina block, and the 2nd lamina piece cut out from the 2nd lamina block mutually joined in the 1st direction, and has a junction part. The one splicing material which constitutes one splicing material and is arranged side by side in a second direction orthogonal to the first direction and at least adjacent in the second direction. The joints are offset from each other in the first direction.

According to this aspect, the laminated material is shifted in the first direction between the one joint members adjacent in the second direction, so that the laminated material is disposed in the same position in the first direction. The bending strength of can be improved. That is, since the joint portion of the first joint material can be reinforced by the lamina piece of the second joint material adjacent to the first joint material, it is possible to suppress breakage of the laminated material starting from the joint portion.
In particular, each of the splicing members of this aspect is configured by joining the first lamina piece and the second lamina piece. Therefore, the lamina pieces of the same type (moisture content, dimensions, etc.) are arranged at corresponding positions in the first direction between the joint members. Thereby, even if each one piece of splicing material is constituted by lamina pieces whose lengths in the first direction are not uniform, in each one splicing material, the spacing between adjacent joints in the first direction is constant. become. For this reason, when arranging each one of the joint members in the second direction, it becomes easy to shift all the joints by a predetermined dimension between the one joint member. Thereby, after aiming at the improvement of manufacturing efficiency, the bending strength of a laminated material is securable. In addition, in order to make the interval between the joint portions adjacent in the first direction uniform, for example, the cost is reduced and the yield is improved as compared with the case where the joint members are formed by joining the lamina pieces of uniform length. be able to.
In addition, since one of the splicing members is formed by joining the first lamina piece and the second lamina piece, the first splice material at any position in the first direction between the one splicing member. Variation in equilibrium moisture content in a cross section perpendicular to the direction can be reduced. Therefore, it is possible to provide a laminated material with high linearity by suppressing warping of the laminated material due to a difference in equilibrium moisture content between each one of the spliced materials.

A method for manufacturing a laminated lumber according to an aspect of the present invention includes a joining step in which a first lamina block and a second lamina block are joined in a first direction to form a joining block, and the joining block is the first joining block. Splitting in a second direction orthogonal to the direction, a splitting step of forming a plurality of one splice material having a joint portion in which the first lamina pieces and the second lamina pieces are joined in the first direction; A transverse contact process in which the one joint material is joined in the second direction in a state where the joining portion is shifted in the first direction between the one joint materials adjacent to each other in at least the second direction. And have.
According to this aspect, in the dividing step, one splicing block in which the lamina blocks are joined in the first direction is split in the second direction to form a plurality of one splicing material. Therefore, in addition to the above-described effects, as compared with the case where the lamina pieces are joined together to form a plurality of one splicing material, one splicing material in which all the joints are in the same position is reliably manufactured. Can do. As a result, cost reduction and yield improvement can be achieved.

In the laminated material according to the above aspect, the one joint material adjacent in the second direction may be joined in the second direction.
According to this aspect, it is possible to provide a laminated material in which all the joint portions are shifted by a predetermined dimension between the one spliced material by joining the one spliced material in the second direction.

In the laminated lumber according to the above aspect, the third lamina piece cut out from the third lamina block and the fourth lamina piece cut out from the fourth lamina block are joined together in the first direction to have the other ridge There may be a joint material, and the adjacent one joint material may be joined with the other joint material interposed therebetween.
According to this aspect, for example, after selecting a material having high bending strength for the other joint material, the one joint material and the other joint material are joined in the second direction, for example. As a result, since one seam can be reinforced by the other seam, even if a low bending strength material is selected for one seam, the bending strength as a laminated material Can be secured.

In the laminated material according to the above aspect, two or more of the other joint members are arranged in the second direction, and the other joint members adjacent in the second direction are connected to each other in the first direction. May be shifted from each other.
According to this configuration, the laminated member is displaced in the first direction between the other joint members adjacent in the second direction, so that the laminated material is compared with the case where the joint portions are arranged at the same position in the first direction. The bending strength of can be improved.

In the laminated material according to the above aspect, three or more of the one joint material are arranged in the second direction, and the joints are shifted from each other in the first direction between all the one joint materials. Also good.
According to this aspect, since all the adjacent joints between all the one joint members are displaced from each other by a predetermined dimension in the first direction, the bending strength can be reliably improved.

In the laminated material according to the above aspect, the first lamina piece and the second lamina piece may have different lengths in the first direction.
According to this aspect, in order to align the interval between the joint portions adjacent in the first direction and the equilibrium moisture content of each one splicing material, for example, one laminar piece is joined by joining the lamina pieces of uniform length. Compared with the case where a material is formed, the cost can be reduced and the yield can be improved.

The handrail according to one aspect of the present invention is formed of the laminated material of the above aspect.
According to this aspect, since it is formed with the laminated material mentioned above, the handrail excellent in bending strength and linearity can be provided at low cost.

  According to one embodiment of the present invention, it is possible to improve bending strength and linearity while reducing costs and improving yield.

It is a flowchart for demonstrating the manufacturing method of the laminated material which concerns on embodiment. It is process drawing for demonstrating the manufacturing method of the laminated material which concerns on embodiment. It is process drawing for demonstrating the manufacturing method of the laminated material which concerns on embodiment. It is process drawing for demonstrating the manufacturing method of the laminated material which concerns on embodiment. It is process drawing for demonstrating the manufacturing method of the laminated material which concerns on embodiment. It is process drawing for demonstrating the manufacturing method of the laminated material which concerns on embodiment. It is a perspective view of the laminated material which concerns on embodiment. It is sectional drawing of the handrail which concerns on embodiment. It is the side view which looked at the laminated material which concerns on the other structure of embodiment from the Z direction. It is the side view which looked at the laminated material which concerns on the other structure of embodiment from the Z direction. It is a perspective view of the laminated material which concerns on the other structure of embodiment.

Next, embodiments of the present invention will be described with reference to the drawings.
[Production method of laminated timber]
FIG. 1 is a flowchart for explaining a method of manufacturing the laminated material 50. 2-6 is process drawing for demonstrating the manufacturing method of the laminated material 50. FIG.
As shown in FIG. 1, the manufacturing method of the laminated material 50 (refer FIG. 6) of this embodiment is rough cutting process S1, drying process S2, block cutting process S3, splicing process S4, division | segmentation process S5, side contact It mainly includes step S6 and finishing step S7.

  As shown in FIG. 1, in the rough cutting step S <b> 1, the raw wood is cut into predetermined dimensions to form a lumber product (rough cut product). At this time, the log is cut so as to remove a defective portion (for example, a knot or a rotting portion). In the present embodiment, a rubber tree is preferably used as the raw wood. However, the raw wood may be wood other than rubber wood (for example, eucalyptus, falkata, poplar, cedar, larch beach, oak, teak, hard maple, cherry, walnut, white ash, etc.).

  Subsequently, in the drying step S2, the lumber product processed in the rough cutting step S1 is dried. The drying step S2 may be natural drying or artificial drying.

  In the block cutting step S3 shown in FIGS. 1 and 2, a plurality of lamina blocks (first lamina block 10, second lamina block 11, and third lamina block 12) are cut out from the lumber product described above. Each lamina block 10-12 is formed in the rectangular parallelepiped shape which makes one direction a longitudinal direction. In the following description, the longitudinal direction of the lamina blocks 10 to 12 is simply referred to as the X direction (first direction), and the directions orthogonal to the X direction are referred to as the Y direction (second direction) and the Z direction (second direction), respectively. In FIG. 2, the X direction is the left-right direction on the paper surface, the Y direction is the vertical direction on the paper surface, and the Z direction is the vertical direction on the paper surface. Moreover, although this embodiment demonstrates the case where the laminated material 50 is manufactured using the three lamina blocks 10-12, it is not restricted to this. That is, the laminar blocks 10 to 12 constituting the laminated material 50 may be two or a plurality of four or more. In addition, each lamina block 10-12 may be processed from the same lumber product, and may be processed from a different lumber product. In addition, when processing from different lumber products, the lumber products may be the same material or different materials.

  In the present embodiment, the lamina blocks 10 to 12 cut out in the block cutting step S3 have the same cross-sectional shape along the YZ plane and different lengths in the X direction. In this embodiment, the length of each lamina block 10-12 is about 200 mm-600 mm, for example. The lamina blocks 10 to 12 need only have at least the same cross-sectional shape. That is, each of the lamina blocks 10 to 12 may have the same length. Moreover, the moisture content of each lamina block 10-12 may mutually differ.

  As shown in FIGS. 1 and 3, in the splicing step S <b> 4, the above-described lamina blocks 10 to 12 are joined in a line in the X direction. Specifically, in the splicing step S4, first, an adhesive is applied to at least one of the end faces of each lamina block 10-12 facing the X direction. Subsequently, the laminar blocks 10 to 12 are held while being pressed in the X direction in a state where the end surfaces in the X direction of the laminar blocks 10 to 12 adjacent in the X direction face each other. Thereby, the lamina blocks 10-12 adjacent in the X direction are joined together, and the splicing block 20 in which the lamina blocks 10-12 are arranged in the X direction is formed. In addition, you may give a finger joint process (finger joint part 51 shown in FIG. 7) to the end surface which faces the X direction in each lamina block 10-12 in the front | former stage of splicing process S4.

  As shown in FIGS. 1 and 4, in the dividing step S5, the splicing block 20 is cut along the X direction. Thereby, the splicing block 20 is divided into a plurality of (for example, three) splicing materials 21 to 23 at equal intervals in the Y direction. Then, the surface of each joint material 21-23 is shaved. The number of divisions of the splicing block 20 is not limited to three and can be changed as appropriate.

  Here, the splicing materials (one splicing material) 21 to 23 of the present embodiment are cut out from the same splicing block 20 as described above. Accordingly, at least the length in the X direction and the cross-sectional dimension in the YZ plane of each of the splicing materials 21 to 23 are equal to each other. The moisture content of each of the splicing materials 21 to 23 (the average value of the water content of each of the splicing materials 21 to 23) is the same. In addition, in each joining material 21-23, the thickness in the Y direction may be different from each other.

  Specifically, the splicing materials 21 to 23 are lamina pieces (first lamina pieces 10a to 10c, second lamina pieces 11a to 11c, and third lamina pieces 12a to 12c) cut out from the respective lamina blocks 10 to 12. Among them, the lamina pieces 10a, 11a, and 12a, the lamina pieces 10b, 11b, and 12b, and the lamina pieces 10c, 11c, and 12c are joined to each other. In this case, among the joint members 21 to 23, the lamina pieces 10a and 11a, the lamina pieces 10b and 11b, and the lamina pieces 10c and 11c are joined to each other via the joint portion 25a. Moreover, lamina pieces 11a and 12a, lamina pieces 11b and 12b, and lamina pieces 11c and 12c are each joined via the junction part 25b among each joining materials 21-23. In addition, in the following description, among each joint material 21-23, what joined lamina pieces 10a, 11a, and 12a joined the 1st joint material 21, lamina pieces 10b, 11b, and 12b. In some cases, the second joint member 22 is referred to as a material, and the lamina pieces 10c, 11c, and 12c are joined together as the third joint material 23.

  As described above, each of the splicing members 21 to 23 has one of the first lamina pieces 10a to 10c, one of the second lamina pieces 11a to 11c, and one of the third lamina pieces 12a to 12c in the X direction. They are joined together in a row. Further, the lamina pieces 10a to 10c, 11a to 11c, and 12a to 12c constituting the joint members 21 to 23 are all arranged in the order of the first lamina piece, the second lamina piece, and the third lamina piece. That is, in each joint material 21 to 23, the lamina pieces 10a to 10c, 11a to 11c, and 12a to 12c arranged at corresponding positions (same positions) in the X direction are cut out from the same lamina blocks 10 to 12, respectively. It has been. Note that the lamina pieces 10a to 10c, 11a to 11c, and 12a to 12c arranged at corresponding positions in the X direction are cut out from the same lamina blocks 10 to 12, respectively. It can be inferred from the grain of 11c, 12a-12c.

  As shown in FIGS. 1 and 5, in the transverse contact step S <b> 6, the splicing materials 21 to 23 are joined in the Y direction. Specifically, in the transverse process S6, first, an adhesive is applied to at least one of the surfaces facing each other in the Y direction in each of the splicing materials 21 to 23. Subsequently, the surfaces facing each other in the Y direction and facing each other in the Y direction are overlapped. After that, by holding the joint members 21 to 23 while pressing them in the Y direction, the transverse body 30 in which the joint members 21 to 23 adjacent in the Y direction are joined is formed. In the present embodiment, the first splicing material 21, the second splicing material 22, and the third splicing material 23 are arranged in order in the Y direction (so that the cut surfaces in the dividing step S5 described above overlap each other). (Ii) The joint members 21 to 23 are joined. However, the order in the Y direction of the 1st joint material 21, the 2nd joint material 22, and the 3rd joint material 23 can be changed suitably. Moreover, you may invert each joining material 21-23 among each joining materials 21-23 in the Y direction, and may join.

  Here, in the transverse contact step S6, the joint portions 25a and 25b in all the splicing materials 21 to 23 are always shifted from each other in the X direction to the intended dimensions (the positions of the joint portions 25a and 25b in the X direction). Are joined together) in the Y direction. In the lateral connection step S6, for example, the second joint material 22 and the third joint material 23 are shifted to one side in the X direction with respect to the first joint material 21, respectively. That is, among the joint materials 21 to 23 adjacent in the Y direction, the joint portion 25a of the other joint material is disposed between the joint portions 25a and 25b of the one joint material. In the present embodiment, the amounts of displacement in the X direction between the joint members 21 to 23 are equal to each other (for example, about 50 mm to 60 mm).

  As shown in FIGS. 1 and 6, in the finishing step S <b> 7, both end portions in the X direction of the horizontal body 30 are cut. Thereby, the both end surfaces of the X direction in the horizontal body 30 become a smooth surface (The both end surfaces of the X direction in each joining material 21-23 are flush | planar). Furthermore, the laminated material 50 is completed by scraping the surface of the lateral body 30.

[Glued lumber]
Next, the laminated material 50 manufactured by the manufacturing method mentioned above is demonstrated. FIG. 7 is a perspective view of the laminated material 50.
The laminated material 50 shown in FIGS. 6 and 7 is formed in, for example, a quadrangular prism shape. Specifically, the laminated material 50 is configured by joining a plurality of splicing materials 21 to 23 in the Y direction.

  The splicing materials 21 to 23 are configured by joining a plurality of lamina pieces (lamina pieces 10a, 11a, 12a, lamina pieces 10b, 11b, 12b and lamina pieces 10c, 11c, 12c) in the X direction. Yes. In other words, the lamina pieces 10a to 10c, 11a to 11c, and 12a to 12c that constitute the splicing materials 21 to 23 are all arranged in the order of the first lamina piece, the second lamina piece, and the third lamina piece. In addition, the finger joint part 51 may be formed in joining part 25a, 25b of the lamina pieces adjacent in the X direction. Thereby, the joining area in joining part 25a, 25b is ensured, and joining strength can be improved. However, the joining portions 25a and 25b may be joined with flat surfaces orthogonal to the X direction, or may be joined with inclined surfaces inclined with respect to the X direction. Further, the joint portions 25 a and 25 b may be joined by unevenness other than the finger joint portion 51.

  Here, in the laminated material 50 of this embodiment, between the joint materials 21 to 23 adjacent in the Y direction, the joint materials 21 to 23 are joined so that all the joint portions 25a and 25b are displaced from each other in the X direction. Has been. On the other hand, the laminated material 50 is the same type (moisture content, dimensions, etc.) of lamina pieces (lamina pieces 10a to 10a cut out from the same lamina blocks 10 to 12) between the joint materials 21 to 23 adjacent in the Y direction. 10c, 11a to 11c, 12a to 12c) partially overlap in the X direction.

As described above, the laminated material 50 of the present embodiment is configured such that the joint materials 21 to 23 adjacent in the Y direction are joined in a state in which the joining portions 25a and 25b are shifted in the X direction.
According to this configuration, the bending strength of the laminated material 50 is improved between the joint members 21 to 23 adjacent in the Y direction as compared with the case where the joint portions 25a and 25b are arranged at the same position in the X direction. Can do. That is, since the joint portions 25a and 25b of one joint material can be reliably reinforced by the lamina pieces of other joint materials adjacent to the one joint material, the laminated material 50 starts from the joint portions 25a and 25b. Can be prevented from breaking.

In particular, each of the splicing materials 21 to 23 of the present embodiment is configured by joining the first lamina pieces 10a to 10c, the second lamina pieces 11a to 11c, and the third lamina pieces 12a to 12c.
According to this configuration, the lamina pieces of the same type (moisture content, dimensions, etc.) are arranged at corresponding positions in the X direction between the joint members 21 to 23. Thereby, even if each joint material 21-23 is comprised by lamina pieces with non-uniform length of the X direction, in each joint material 21-23, between the junction parts 25a and 25b adjacent in the X direction. The interval is constant. Therefore, when joining the joining materials 21 to 23 in the Y direction, it becomes easy to shift all joining portions 25a and 25b by a predetermined dimension between the joining materials 21 to 23. As a result, it is possible to secure the bending strength of the laminated material 50 while improving the manufacturing efficiency. Moreover, in order to align the gaps between the joint portions 25a and 25b adjacent in the X direction, for example, the cost is reduced and the yield is improved as compared to the case where laminating pieces of uniform length are joined together to form a splicing material. Can be achieved.
Furthermore, since the splicing materials 21-23 are formed by joining the lamina pieces 10a-10c, 11a-11c, 12a-12c cut out from the same lamina blocks 10-12, each splicing material The variation in the equilibrium moisture content in the YZ section at any position in the X direction between 21 and 23 can be reduced. Therefore, it is possible to provide a highly linear laminated material 50 while suppressing warpage of the laminated material 50 due to a difference in the equilibrium moisture content between the joint members 21 to 23.

And in this embodiment, it was set as the structure which divides | segments the splicing block 20 in which the lamina blocks 10-12 were joined by the X direction in the Y direction, and forms the several splicing materials 21-23.
According to this structure, compared with the case where lamina pieces are joined together to form a plurality of joint materials, it is possible to reliably manufacture the joint materials 21 to 23 in which all the joint portions 25a and 25b are in the same position. it can. As a result, cost reduction and yield improvement can be achieved.

  In this embodiment, since all the joint portions 25a and 25b adjacent in the Y direction are joined in a state shifted from each other by a predetermined dimension in the X direction, the bending strength is increased between the joint members 21 to 23. Can be reliably improved.

In the present embodiment, the lengths of the lamina pieces adjacent in the X direction are different from each other.
According to this structure, in order to arrange the space | interval between the junction parts 25a and 25b adjacent in a X direction, and the equilibrium moisture content of each splice material 21-23, for example, the lamina pieces of uniform length are joined together Cost reduction and yield improvement can be achieved as compared to the case of forming a joint material.

[handrail]
Next, the handrail 104 using the laminated material 50 of the embodiment described above will be described. FIG. 8 is a schematic cross-sectional view of the handrail unit 100.
The handrail unit 100 shown in FIG. 8 is provided along the stairs (not shown), for example, on the inner wall surface 102 of the building. The handrail unit 100 of the present embodiment is configured by a handrail 104 held by a resident being fixed to an inner wall surface 102 via a bracket 105.

  The bracket 105 is provided at predetermined intervals along a staircase (not shown). The bracket 105 includes a wall fixing portion 110 fixed to the inner wall surface 102, a handrail fixing portion 111 to which the handrail 104 is fixed, and an arm portion 112 that connects the wall fixing portion 110 and the handrail fixing portion 111. ing.

The wall fixing part 110 is formed in a plate shape. The wall fixing part 110 is attached to the inner wall surface 102 by screws or the like, for example.
The arm portion 112 is formed in an arc shape. Specifically, the arm portion 112 extends while being curved upward as it is separated from the inner wall surface 102 in the horizontal direction.
The handrail fixing portion 111 is connected to the upper end portion of the arm portion 112. The handrail fixing portion 111 is formed in a convex arc shape downward.

  The handrail 104 is configured by processing the cross-sectional shape of the YZ plane (see FIG. 7) into a circular shape with respect to the laminated material 50 described above. The handrail 104 spans between the handrail fixing portions 111 of the brackets 105. Specifically, the handrail 104 is fixed to each handrail fixing portion 111 with a screw or the like with the lower outer peripheral surface supported by the upper surface of the handrail fixing portion 111 described above. In addition, the cross-sectional shape of the handrail 104 is not limited to a circle, and a design change such as a polygon can be made as appropriate.

  In the handrail 104 of this embodiment, since it is manufactured using the laminated material 50 mentioned above, the handrail 104 excellent in bending strength and linearity can be provided at low cost.

  In addition, although this embodiment demonstrated the structure which used the laminated material 50 mentioned above for the handrail 104 for stairs, it is not restricted to this structure, You may use the laminated material 50 for the handrail for hallways or an entrance. . Also. The laminated material 50 is not limited to a handrail, but may be employed for interior members other than handrails, furniture, wooden building frames (columns, beams, etc.), and the like.

The technical scope of the present invention is not limited to the above-described embodiments, and includes those in which various modifications are made to the above-described embodiments without departing from the spirit of the present invention.
For example, in the above-described embodiment, the configuration in which the splicing members 21 to 23 are joined (laterally connected) with flat surfaces orthogonal to the Y direction has been described. However, the configuration is not limited thereto. For example, each of the splicing materials 21 to 23 may join the inclined surfaces inclined with respect to the Y direction, or may join the uneven surfaces.

In the above-described embodiment, the case has been described in which the amounts of displacement in the X direction between the splicing materials 21 to 23 are set to be equal to each other, but is not limited to this configuration. For example, as shown in FIG. 9, the shift amounts l _{1 to} l ₄ in the X direction between the splicing materials 21 to 23 may be appropriately changed. In the example of FIG. 9, the length of the lamina pieces (for example, lamina pieces 11a to 11c) is indicated by L. The shift amount of the joint portion 25a of the first vertical joint member 21 to the bonding portion 25a of the second vertical joint member 22 shown in _{l 1,} the shift amount of the joint portion 25b to the bonding portion 25a of the second vertical joint member 22 _{l 2} Is shown. The shift amount of the joint portion 25a of the third vertical joint member 23 to the bonding portion 25a of the second vertical joint member 22 shown in _{l 3,} the shift amount of the joint portion 25b to the bonding portion 25a of the second vertical joint member 22 _{l 4} Is shown. In this case, the displacement amount l ₁ (displacement amount l ₂ ) of the first joint material 21 with respect to the joint portion 25 a of the second joint material 22 and the third joint material 23 with respect to the joint portion 25 a of the second joint material 22. And the deviation amount l ₃ (deviation amount l ₄ ) are different from each other.

  In the laminated material 50 of the above-described embodiment, the configuration in which the joint portions 25a and 25b are displaced from each other in the X direction between all the splicing materials 21 to 23 has been described, but is not limited to this configuration. It suffices that the joining portion is shifted in the X direction between the joint members adjacent in at least the Y direction. For example, as in the laminated material 150 shown in FIG. 10, in the six splicing materials 151 to 156, the joint portions of other splicing materials located on both sides in the Y direction with one splicing material interposed therebetween are X They may be aligned with each other in the direction. In this case, the joining portions 160 that join the lamina pieces 10a to 10f and the lamina pieces 11a to 11f, and the joining portions 161 that connect the lamina pieces 11a to 11f and the lamina pieces 12a to 12f are alternately arranged. Is done. Thereby, the joining strength between each joining material 151-156 and between lamina pieces 10a-10f, 11a-11f, 12a-12f adjacent in the X direction is securable.

  For example, in the embodiment described above, the case where the splicing material is joined in the Y direction has been described. However, the present invention is not limited to this configuration, and the splicing material may be joined in the Y direction and the Z direction. For example, in the laminated material 200 shown in FIG. 11, a plurality of splicing materials 201 are joined three by three in the Y direction and the Z direction. In this case, in each joint material 201, the joint portion 210 is shifted in the X direction between the joint materials 201 adjacent in the Y direction and the Z direction. However, each joining material 201 does not need to be displaced in the joint portion 210 in at least one direction of the Y direction and the Z direction.

  In the above-described embodiment, the configuration in which the lengths of the lamina pieces constituting the different lamina blocks are different in the X direction has been described. However, the present invention is not limited to this configuration, and all the lamina pieces may have the same length.

  In the above-described embodiment, the configuration in which one joint material (joint materials 21 to 23) formed of one material (for example, Falkata) is joined in the Y direction has been described. I can't. For example, one adjacent joint material may be joined in the Y direction with the other joint material formed of another material different from the one material (for example, eucalyptus) interposed therebetween. That is, one splicing material may be arranged side by side in the Y direction in a state where the joint portions are shifted from each other in the X direction.

  Here, the other spliced material is the same as the one spliced material, but the spliced block formed by joining the lamina blocks (the third lamina block and the fourth lamina block) in the X direction is cut out in the X direction. Composed. And when forming a laminated material with three sheets of splicing materials, what is necessary is just to arrange | position one other splicing material between two one splicing materials.

  Further, when the laminated material is formed by four or more pieces of splicing materials, for example, one splicing material and the other splicing material may be alternately arranged. In this case, it is only necessary that at least one joint portion of the splicing material has a dimensional deviation intended in the X direction, and the other joint portion of the splicing material has a dimensional deviation intended in the X direction. That is, the positions in the X direction of the joint portion of one joint material and the joint portion of the other joint material may be coincident or close to each other. Thus, in addition to between one joint material adjacent in the Y direction, the joint portion is shifted in the X direction between the other joint materials adjacent in the Y direction, so that the joint portion is in the same position in the X direction. The bending strength of the laminated material can be improved as compared with the case where the laminated material is disposed. However, it is preferable that the joints are shifted between all the splicing materials.

  According to this configuration, for example, after selecting a material having high bending strength for the other joint material, one joint material and the other joint material are alternately joined in the Y direction, for example. As a result, since one seam can be reinforced by the other seam, even if a low bending strength material is selected for one seam, the bending strength as a laminated material Can be secured.

In addition, when using the splicing material of a different material, the length of the one splicing material and the other splicing material may differ in the X direction or the Y direction.
In the above description, the case where the splicing materials cut out from two types of splicing blocks are joined to each other has been described. However, the present invention is not limited to this configuration, and cut out from splicing blocks of three or more types of different materials. The spliced materials may be joined in the Y direction.
Further, a plurality of other seam members may be arranged between one seam material adjacent in the Y direction. Similarly, a plurality of one splicing material may be arranged between the other splicing materials adjacent in the Y direction.
Moreover, in the other splicing material, the X-direction lengths of the third lamina piece and the fourth lamina piece may be different from each other. That is, the first to fourth lamina pieces may have different lengths in the X direction.

  In addition, in the range which does not deviate from the meaning of this invention, it is possible to replace suitably the component in the embodiment mentioned above by the known component, and you may combine the modification mentioned above suitably.

DESCRIPTION OF SYMBOLS 10 ... 1st lamina block (1st lamina block, 2nd lamina block), 10a-10c ... 1st lamina piece (1st lamina piece, 2nd lamina piece), 11 ... 2nd lamina block (1st lamina block, 2nd lamina block), 11a-11c ... 2nd lamina piece (first lamina piece, 2nd lamina piece), 12 ... 3rd lamina block (1st lamina block, 2nd lamina block), 12a-12c ... 3rd Lamina pieces (first lamina pieces, second lamina pieces), 20 ... splicing block, 21 ... first splicing material (one splicing material), 22 ... second splicing material (one splicing material), 23 ... 3rd joint material (one joint material), 25a ... Joining part, 25b ... Joining part, 30 ... Lateral body, 50 ... Glue, 51 ... Finger joint part, 100 ... Handrail unit, 102 ... Inside Wall surface, 104 ... handrail, 10 DESCRIPTION OF SYMBOLS ... Bracket, 110 ... Wall fixing part, 111 ... Handrail fixing part, 112 ... Arm part, 150 ... Glued material, 151 ... Joint material, 152 ... Joint material, 153 ... Joint material, 154 ... Joint material, 155 ... joint material, 156 ... joint material, 160 ... joint part, 161 ... joint part, 200 ... laminated material, 201 ... joint material, 210 ... joint part

Claims (8)

A first lamina piece cut out from the first lamina block and a second lamina piece cut out from the second lamina block are joined together in the first direction to constitute one joint material having a joint portion, and a plurality Are arranged side by side in a second direction orthogonal to the first direction,
The laminated material is characterized in that at least the one joint material adjacent to each other in the second direction is shifted from each other in the first direction.   The laminated material according to claim 1, wherein the one splicing material adjacent in the second direction is joined in the second direction. A third lamina piece cut out from the third lamina block and a fourth lamina piece cut out from the fourth lamina block are joined together in the first direction to have the other splicing member having a joint portion;
The laminated material according to claim 1 or 2, wherein the adjacent one joint material is joined with the other joint material interposed therebetween. Two or more of the other joint members are arranged in the second direction,
4. The laminated material according to claim 3, wherein the other joint members adjacent in the second direction have their joints shifted from each other in the first direction. Three or more of the one splicing material are arranged in the second direction,
The laminated material according to any one of claims 1 to 4, wherein the joint portions are displaced from each other in the first direction between all the one joint materials.   The laminated material according to any one of claims 1 to 5, wherein the first lamina piece and the second lamina piece have different lengths in the first direction. A joining step of joining the first lamina block and the second lamina block in the first direction to form a joining block;
The joint block is divided into a second direction orthogonal to the first direction, and a plurality of joint members having a joint portion in which the first lamina pieces and the second lamina pieces are joined to each other in the first direction are provided. A dividing step to be formed;
Lateral joining a plurality of the one joint members in the second direction with the joining portion being shifted in the first direction at least between the one joint members adjacent in the second direction. A method for producing laminated timber, comprising: a contacting step.   A handrail made of the laminated material according to any one of claims 1 to 6.

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