Protective jig for wooden shaft member and method for protecting wooden shaft member

Abstract

A protective jig for a wooden shaft member and a method for protecting a wooden shaft member that can suppress misalignment of holes are provided. [Solution] A first shaft member 11, which is a wooden shaft member, is provided with a plurality of holes 21 extending in a direction intersecting the axial direction. The first shaft member 11 has an opening surface 22 in which the holes 21 open. A protective jig 17 for the first shaft member 11 is provided with an attachment member 40 that is detachable from the first shaft member 11. The attachment member 40 has a base portion 41 and an insertion portion 42. The base portion 41 is disposed on the opening surface 22. The insertion portion 42 protrudes from the base portion 41 and is inserted into the holes 21 from the opening surface 22.

Description

[Technical Field]

[0001] The present disclosure relates to a protective jig for a wooden shaft member and a method for protecting a wooden shaft member. [Background technology]

[0002] Patent Document 1 discloses a wooden beam, which is one type of wooden shaft member. The wooden beam has holes extending in a direction intersecting the direction in which the wooden beam extends. Drift pins for connecting the wooden beam to a beam support plate are inserted into the holes. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2024-24423 Summary of the Invention [Problem to be solved by the invention]

[0004] When a wooden shaft is exposed to water or stored in a humid environment, it absorbs moisture and expands. When a wooden shaft is stored in a dry environment, the moisture in the wooden shaft evaporates, causing it to shrink. When the wooden shaft expands or contracts, the hole position shifts. If the hole position shifts, the wooden shaft may crack when the drift pin connects the wooden shaft to the beam support plate. [Means for solving the problem]

[0005] (1) A protective jig for a wooden shaft member that solves the above problem comprises an attachment member that can be attached to and detached from the wooden shaft member, the wooden shaft member having a plurality of holes extending in a direction intersecting the axial direction, the wooden shaft member having an opening surface through which the holes open, and the attachment member having a base portion that is placed on the opening surface and an insertion portion that protrudes from the base portion and is inserted from the opening surface into the holes. According to this configuration, since the insertion portion is inserted into the hole, the position of the hole is unlikely to change even if the wooden shaft member expands or contracts during storage, and therefore, displacement of the hole can be suppressed.

[0006] (2) In the protective jig for a wooden shaft member described in (1) above, the opening surface includes a first opening surface through which a first end of the hole opens, and a second opening surface opposite the first opening surface through which a second end of the hole opens, and the mounting member includes a first mounting member whose base portion is arranged on the first opening surface and whose insertion portion is inserted from the first opening surface into the hole, and a second mounting member whose base portion is arranged on the second opening surface and whose insertion portion is inserted from the second opening surface into the hole.

[0007] According to this configuration, the protective jig includes one mounting member, and the length of the insertion portion can be shortened compared to when one insertion portion extends from one of the first opening surface and the second opening surface to the other. This makes it easier to attach and detach the mounting member to and from the wooden shaft member. In particular, if the wooden shaft member shrinks, it may be difficult to remove the insertion portion from the hole when removing the mounting member from the wooden shaft member, so the above configuration, which can shorten the length of the insertion portion, is effective.

[0008] (3) In the protective jig for a wooden shaft member described above in (1) or (2), the mounting member has two extension portions that extend from the base portion and sandwich the wooden shaft member in a direction that intersects both the axial direction of the wooden shaft member and the direction in which the hole extends. With this configuration, the mounting member can be stably attached to the wooden shaft member.

[0009] (4) In the protective jig for a wooden shaft member described above in (3), the mounting member has a reinforcing portion that connects the base portion and the extension portion. According to this configuration, the mounting member can be reinforced by the reinforcing portion.

[0010] (5) In the protective jig for a wooden shaft member according to any one of (1) to (4) above, the attachment member is made of metal. This configuration can further prevent the holes from shifting in position due to expansion or contraction of the wooden shaft member.

[0011] (6) A method for protecting a wooden shaft member that solves the above problem is to store the wooden shaft member with any one of the above-mentioned (1) to (5) wooden shaft member protection jigs attached thereto. According to this method, the wooden shaft member is stored with the insertion portion inserted into the hole. Therefore, even if the wooden shaft member expands or contracts during storage, the position of the hole is unlikely to change. Therefore, it is possible to prevent the hole from shifting position. [Effects of the Invention]

[0012] According to the protective jig for a wooden shaft member and the protective method for a wooden shaft member of the present disclosure, misalignment of holes can be suppressed. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is an exploded perspective view showing the framework of a building. [Figure 2] FIG. 1 is a plan view showing the framework of a building. [Figure 3] FIG. 3 is a perspective view showing a first shaft member and a protective jig attached to the first shaft member. [Figure 4] FIG. 2 is an exploded perspective view showing a first shaft member and a protective jig. DETAILED DESCRIPTION OF THE INVENTION

[0014] A protective jig 17 for a wooden shaft member and a method for protecting a wooden shaft member according to this embodiment will be described with reference to FIGS. As shown in Figures 1 and 2, a framework 10 of a building comprises a first shaft member 11, a second shaft member 12, and a connecting hardware 13, which are wooden shaft members. In this embodiment, the first shaft member 11 and the second shaft member 12 are each a cross member extending horizontally. The axial direction of the first shaft member 11 and the axial direction of the second shaft member 12 are perpendicular to each other. In this embodiment, the first shaft member 11 and the second shaft member 12 are each made of wood.

[0015] The first shaft member 11 is provided with a plurality of holes 21. Four holes 21 are provided in the first shaft member 11 of this embodiment. The holes 21 extend in a direction intersecting the axial direction of the first shaft member 11. In this embodiment, the direction in which the holes 21 extend is perpendicular to the axial direction of the first shaft member 11. The holes 21 penetrate the first shaft member 11. The four holes 21 are provided at the ends of the first shaft member 11 in the axial direction. The four holes 21 are lined up at intervals in a direction intersecting both the axial direction of the first shaft member 11 and the direction in which the holes 21 extend.

[0016] The cross-sectional shape of the first shaft member 11 in this embodiment is rectangular. The first shaft member 11 has an opening surface 22 where the hole 21 opens. In this embodiment, the opening surface 22 includes a first opening surface 22a where a first end of the hole 21 opens, and a second opening surface 22b where a second end of the hole 21 opens. The second opening surface 22b is the surface opposite to the first opening surface 22a. The first shaft member 11 has two connecting surfaces 23 that connect the first opening surface 22a and the second opening surface 22b. The two connecting surfaces 23 form a pair in a direction that intersects both the axial direction of the first shaft member 11 and the direction in which the hole 21 extends.

[0017] The first shaft member 11 is manufactured by cutting wood. The axial direction of the first shaft member 11 is the same as the grain direction of the wood. The axial end surface 24 of the first shaft member 11 is formed by a cut surface obtained by cutting the wood in a direction intersecting the grain direction. Therefore, the end surface 24 of the first shaft member 11 includes an end grain surface. The end grain surface is the surface on which the annual rings are visible.

[0018] In this embodiment, two slits 25 are provided in the end surface 24 of the first shaft member 11. The two slits 25 are arranged side by side with a gap in between in the direction in which the hole 21 extends. The slits 25 extend from one connection surface 23 to the other connection surface 23. The hole 21 passes through the two slits 25. In the end surface 24 of the first shaft member 11, the portion located between the two slits 25 is recessed relative to the portions located on both sides of the two slits 25.

[0019] The connecting hardware 13 has a first plate 31 and two second plates 32 extending from the first plate 31. Each second plate 32 has a plate hole 32a. The first plate 31 is arranged along the side surface 12a of the second shaft member 12. A bolt 14 passes through the second shaft member 12 and the first plate 31. A nut 15 is engaged with the bolt 14. This connects the second shaft member 12 and the connecting hardware 13.

[0020] As shown in FIG. 2 , the two second plates 32 are inserted into the two slits 25 of the first shaft member 11. The plate holes 32a of the second plates 32 overlap with the holes 21 of the first shaft member 11. The drift pin 16 is inserted through the holes 21 of the first shaft member 11 and the plate holes 32a of the two second plates 32. This connects the first shaft member 11 and the connecting hardware 13. Therefore, the first shaft member 11 is connected to the second shaft member 12 via the connecting hardware 13.

[0021] <Protective jig for wooden shaft components> 3 and 4, the protective jig 17 includes a mounting member 40 that is detachable from the first shaft member 11. The mounting member 40 of this embodiment is made of metal. The mounting member 40 of this embodiment includes a first mounting member 40a and a second mounting member 40b. The first mounting member 40a and the second mounting member 40b have the same configuration.

[0022] The mounting member 40 has a base portion 41 and insertion portions 42 protruding from the base portion 41. The base portion 41 is shaped like a rectangular plate. In this embodiment, the number of insertion portions 42 is the same as the number of holes 21. That is, the number of insertion portions 42 is four. The four insertion portions 42 are arranged at intervals in the longitudinal direction of the base portion 41. The interval between two adjacent insertion portions 42 is the same as the interval between two adjacent holes 21. The length of the insertion portions 42 in this embodiment is shorter than the distance from the first opening surface 22a or the second opening surface 22b of the first shaft member 11 to the slit 25.

[0023] The mounting member 40 of this embodiment further has two extending portions 43 and two reinforcing portions 44. One extending portion 43 extends from a first longitudinal end of the base portion 41 in the thickness direction of the base portion 41, and the other extending portion 43 extends from a second longitudinal end of the base portion 41 in the thickness direction of the base portion 41. One reinforcing portion 44 connects an end of the base portion 41 in the short direction of the base portion 41 to an end of one extending portion 43, and the other reinforcing portion 44 connects an end of the base portion 41 in the short direction of the base portion 41 to an end of the other extending portion 43.

[0024] 3, when the mounting member 40 is mounted to the first shaft member 11, the base portion 41 of the first mounting member 40a is disposed on the first opening surface 22a of the first shaft member 11. The insertion portion 42 of the first mounting member 40a is inserted from the first opening surface 22a into the hole 21. The base portion 41 of the second mounting member 40b is disposed on the second opening surface 22b of the first shaft member 11. The insertion portion 42 of the second mounting member 40b is inserted from the second opening surface 22b into the hole 21.

[0025] Of the two extending portions 43 of each mounting member 40, one extending portion 43 contacts one connecting surface 23 of the first shaft member 11, and the other extending portion 43 contacts the other connecting surface 23 of the first shaft member 11. The two extending portions 43 sandwich the first shaft member 11 in a direction intersecting both the axial direction of the first shaft member 11 and the direction in which the hole 21 extends. The two reinforcing portions 44 of each mounting member 40 face the end face 24 of the first shaft member 11.

[0026] <How to protect wooden shaft components> After manufacturing the first shaft member 11, a protective jig 17 is attached to the axial end of the first shaft member 11. In this embodiment, the protective jig 17 is attached so as to sandwich the first shaft member 11 from both sides in the direction in which the hole 21 extends. The insertion portion 42 of the first mounting member 40a is inserted into the hole 21 from the first opening surface 22a of the first shaft member 11. The insertion portion 42 of the second mounting member 40b is inserted into the hole 21 from the second opening surface 22b of the first shaft member 11.

[0027] The first shaft member 11 is stored with the protective jig 17 attached from the time it is manufactured in the factory until it is installed at the site. Specifically, the first shaft member 11 is stored at the factory with the protective jig 17 attached from the time it is manufactured in the factory until it is shipped. The first shaft member 11 is transported from the factory to the site with the protective jig 17 attached. The first shaft member 11 is stored at the site with the protective jig 17 attached from the time it is delivered to the site until it is installed. In this way, in this embodiment, the first shaft member 11 is left with the protective jig 17 attached when it is transported from the factory to the site, and therefore the state of the first shaft member 11 during transportation is considered to be one form of storage. The protective jig 17 is removed from the first shaft member 11 immediately before the installation of the first shaft member 11. The removed protective jig 17 can be reused for other first shaft members 11.

[0028] [Actions and Effects of This Embodiment] The operation and effects of this embodiment will be described. (1) The first shaft member 11 is provided with a plurality of holes 21 extending in a direction intersecting the axial direction. The first shaft member 11 has an opening surface 22 in which the holes 21 open. The protective jig 17 for the first shaft member 11 is provided with an attachment member 40 that is detachable from the first shaft member 11. The attachment member 40 has a base portion 41 and an insertion portion 42. The base portion 41 is disposed on the opening surface 22 of the first shaft member 11. The insertion portion 42 protrudes from the base portion 41 and is inserted into the holes 21 from the opening surface 22.

[0029] According to this configuration, since the insertion portion 42 is inserted into the hole 21, the position of the hole 21 is unlikely to change even if the first shaft member 11 expands or contracts during storage. Therefore, the positional displacement of the hole 21 can be suppressed.

[0030] (2) The opening surface 22 includes a first opening surface 22a where the first end of the hole 21 opens, and a second opening surface 22b, which is the surface opposite the first opening surface 22a and where the second end of the hole 21 opens. The mounting member 40 includes a first mounting member 40a and a second mounting member 40b. The base portion 41 of the first mounting member 40a is disposed on the first opening surface 22a. The insertion portion 42 of the first mounting member 40a is inserted into the hole 21 from the first opening surface 22a. The base portion 41 of the second mounting member 40b is disposed on the second opening surface 22b. The insertion portion 42 of the second mounting member 40b is inserted into the hole 21 from the second opening surface 22b.

[0031] According to this configuration, the protective jig 17 includes one mounting member 40, and the length of the insertion portion 42 can be shortened compared to when one insertion portion 42 extends from one of the first opening surface 22a and the second opening surface 22b to the other. This makes it easier to attach and detach the mounting member 40 to and from the first shaft member 11. In particular, when the first shaft member 11 contracts, it may be difficult to remove the insertion portion 42 from the hole 21 when removing the mounting member 40 from the first shaft member 11. Therefore, the configuration of this embodiment, which can shorten the length of the insertion portion 42, is effective.

[0032] (3) The mounting member 40 has two extending portions 43. The two extending portions 43 extend from the base portion 41. The two extending portions 43 sandwich the first shaft member 11 in a direction intersecting both the axial direction of the first shaft member 11 and the direction in which the hole 21 extends. This configuration allows the mounting member 40 to be stably attached to the first shaft member 11.

[0033] (4) The mounting member 40 has the reinforcing portion 44 that connects the base portion 41 and the extending portion 43. According to this configuration, the reinforcing portion 44 can reinforce the mounting member 40. (5) The mounting member 40 is made of metal. With this configuration, it is possible to further prevent the position of the hole 21 from shifting due to the expansion or contraction of the first shaft member 11.

[0034] (6) The first shaft member 11 is stored with the protective jig 17 attached. As a result, the first shaft member 11 is stored with the insertion portion 42 inserted into the hole 21, so even if the first shaft member 11 expands or contracts during storage, the position of the hole 21 is unlikely to change. Therefore, displacement of the hole 21 can be suppressed.

[0035] (7) The number of insertion portions 42 of the mounting member 40 is the same as the number of holes 21 provided in the first shaft member 11. As a result, when the mounting member 40 is attached to the first shaft member 11, the insertion portions 42 are inserted into all of the holes 21. Therefore, it is possible to prevent misalignment of all of the holes 21.

[0036] (8) The axial end surface 24 of the first shaft member 11 is a butt surface that is prone to absorbing or evaporating moisture. Therefore, the axial end portion of the first shaft member 11 is prone to expand or contract more than the axial center portion of the first shaft member 11. In this embodiment, the hole 21 is provided at the axial end portion of the first shaft member 11. Therefore, the amount of positional deviation of the hole 21 due to expansion or contraction of the first shaft member 11 is likely to increase. Therefore, the protective jig 17 of this embodiment is particularly effective in suppressing positional deviation of the hole 21.

[0037] (9) Misalignment of the hole 21 of the first shaft member 11 is suppressed. As a result, when the second plate 32 of the connecting hardware 13 is inserted into the slit 25 of the first shaft member 11, the plate hole 32a of the second plate 32 and the hole 21 of the first shaft member 11 tend to overlap. Therefore, by inserting the drift pin 16 through the plate hole 32a and the hole 21, the first shaft member 11 is less likely to crack when connecting the first shaft member 11 and the connecting hardware 13.

[0038] <Example of change> The above-described embodiment is an example of the possible forms that the wooden shaft member protection jig 17 and the wooden shaft member protection method can take, and is not intended to limit the forms. The wooden shaft member protection jig 17 and the wooden shaft member protection method can take forms different from those exemplified in the above-described embodiment. Examples of such forms include forms in which part of the configuration of the embodiment is replaced, modified, or omitted, or forms in which a new configuration is added to the embodiment. Modified examples of the embodiment are shown below.

[0039] The wooden shaft member is not limited to a wooden cross member extending horizontally. The wooden shaft member may be a wooden pillar extending vertically. The protective jig 17 may include one mounting member 40. In this case, the base portion 41 is disposed on the first opening surface 22a or the second opening surface 22b. The insertion portion 42 is inserted into the hole 21 from the opening surface 22 on which the base portion 41 is disposed, either the first opening surface 22a or the second opening surface 22b. The insertion portion 42 may extend from one opening surface 22 on which the base portion 41 is disposed, either the first opening surface 22a or the second opening surface 22b, to the other opening surface 22.

[0040] The cross-sectional shape of the first shaft member 11 is not limited to a rectangular shape. The number of holes 21 provided in the first shaft member 11 may be changed as appropriate, provided that the number is two or more.

[0041] The direction in which the hole 21 extends does not have to be perpendicular to the axial direction of the first shaft member 11 as long as it intersects with the axial direction of the first shaft member 11 . The hole 21 does not have to be provided at the end of the first shaft member 11 in the axial direction. For example, the hole 21 may be provided in the center of the first shaft member 11 in the axial direction. In this case, the protective jig 17 is attached to the center of the first shaft member 11 in the axial direction.

[0042] The hole 21 does not have to penetrate the first shaft member 11. In this case, since the first shaft member 11 has one opening surface 22, the protective jig 17 only needs to include one mounting member 40.

[0043] The hole 21 may include a first hole extending in a first direction intersecting the axial direction of the first shaft member 11, and a second hole extending in a second direction intersecting both the axial direction and the first direction of the first shaft member 11. The opening surface 22 includes a first surface on which the first end of the first hole opens, a second surface on which the second end of the first hole opens, a third surface on which the first end of the second hole opens, and a fourth surface on which the second end of the second hole opens.

[0044] In this case, the protective jig 17 may include four mounting members 40. The base portion 41 of the first mounting member 40 is disposed on the first surface, and the insertion portion 42 of the first mounting member 40 is inserted from the first surface into the first hole. The base portion 41 of the second mounting member 40 is disposed on the second surface, and the insertion portion 42 of the second mounting member 40 is inserted from the second surface into the first hole. The base portion 41 of the third mounting member 40 is disposed on the third surface, and the insertion portion 42 of the third mounting member 40 is inserted from the third surface into the second hole. The base portion 41 of the fourth mounting member 40 is disposed on the fourth surface, and the insertion portion 42 of the fourth mounting member 40 is inserted from the fourth surface into the second hole.

[0045] In the above embodiment, the drift pin 16 is inserted through the hole 21, but other connecting members such as a bolt may be inserted through the hole 21 instead. The number of insertion portions 42 may be less than the number of holes 21. In other words, when the mounting member 40 is attached to the first shaft member 11, the insertion portions 42 do not have to be inserted into all of the holes 21 of the first shaft member 11. Even in this case, misalignment of the holes 21 can be suppressed compared to when the insertion portions 42 are not inserted into all of the holes 21.

[0046] The mounting member 40 does not have to have two extensions 43 . The mounting member 40 does not have to have the reinforcing portion 44. The reinforcing portion 44 may be a single plate member that connects the base portion 41 and the two extension portions 43 together.

[0047] The end surface 24 of the first shaft member 11 does not necessarily have to be provided with the slit 25 . The number of slits 25 provided in the end surface 24 of the first shaft member 11 may be changed as appropriate. The end surface 24 of the first shaft member 11 may be a flat surface.

[0048] In the above embodiment, the second shaft member 12 to which the first shaft member 11 is connected is a horizontal beam extending horizontally, but it may also be a pillar extending vertically. In the above embodiment, the second shaft member 12 to which the first shaft member 11 is connected is made of wood, but it may also be made of steel.

[0049] The mounting member 40 does not have to be made of metal. The mounting member 40 only needs to be made of a material that is rigid enough to prevent the holes 21 from shifting position when the wooden shaft member expands or contracts, and that does not easily absorb or evaporate moisture.

[0050] If the wooden shaft member is exposed to water or stored in a humid environment, it is preferable that the mounting member 40 be made of a material that is resistant to rust. For example, the mounting member 40 may be made of stainless steel.

[0051] <Additional Notes> This specification discloses the following techniques: [Appendix 1] A protective jig for a wooden shaft member comprising an attachment member that can be attached and detached to a wooden shaft member, the wooden shaft member having a plurality of holes extending in a direction intersecting the axial direction, the wooden shaft member having an opening surface through which the holes open, the attachment member having a base portion that is placed on the opening surface, and an insertion portion that protrudes from the base portion and is inserted from the opening surface into the holes.

[0052] [Appendix 2] In the protective jig for wooden shaft members described in Appendix 1, the opening surface includes a first opening surface through which a first end of the hole opens, and a second opening surface opposite the first opening surface through which a second end of the hole opens, and the mounting member includes a first mounting member whose base portion is arranged on the first opening surface and whose insertion portion is inserted from the first opening surface into the hole, and a second mounting member whose base portion is arranged on the second opening surface and whose insertion portion is inserted from the second opening surface into the hole.

[0053] [Appendix 3] In the protective jig for a wooden shaft member described in Appendix 1, the mounting member has two extension portions that extend from the base portion and sandwich the wooden shaft member in a direction that intersects both the axial direction of the wooden shaft member and the direction in which the hole extends.

[0054] [Appendix 4] In the protective jig for a wooden shaft member described in Appendix 3, the mounting member has a reinforcing portion that connects the base portion and the extension portion.

[0055] [Appendix 5] In the protective jig for a wooden shaft member described in Appendix 1, the mounting member is made of metal. [Appendix 6] A method for protecting a wooden shaft member, wherein the wooden shaft member is stored with a protective jig for a wooden shaft member described in any one of appendices 1 to 5 attached thereto. [Explanation of symbols]

[0056] 11...first shaft member as wooden shaft member, 17...protective jig, 21...hole, 22...opening surface, 22a...first opening surface, 22b...second opening surface, 40...mounting member, 40a...first mounting member, 40b...second mounting member, 41...base portion, 42...insertion portion, 43...extension portion, 44...reinforcement portion.

Claims

1. a mounting member that is detachable from the wooden shaft member; The wooden shaft member has a plurality of holes extending in a direction intersecting the axial direction, The wooden shaft member has an opening surface through which the hole opens, The mounting member is a protective jig for a wooden shaft member, and has a base portion that is placed on the opening surface, and an insertion portion that protrudes from the base portion and is inserted from the opening surface into the hole.

2. the opening surface includes a first opening surface on which a first end of the hole opens, and a second opening surface that is a surface opposite to the first opening surface and on which a second end of the hole opens, The mounting member is a first mounting member having the base portion disposed on the first opening surface and the insertion portion inserted from the first opening surface into the hole; A protective jig for a wooden shaft member as described in claim 1, including a second mounting member, the base portion of which is arranged on the second opening surface and the insertion portion of which is inserted from the second opening surface into the hole.

3. A protective jig for a wooden shaft member as described in claim 1, wherein the mounting member has two extension portions extending from the base portion and sandwiching the wooden shaft member in a direction intersecting both the axial direction of the wooden shaft member and the direction in which the hole extends.

4. The protective jig for a wooden shaft member according to claim 3, wherein the mounting member has a reinforcing portion connecting the base portion and the extension portion.

5. 2. The protective jig for a wooden shaft member according to claim 1, wherein the mounting member is made of metal.

6. A method for protecting a wooden shaft member, wherein the wooden shaft member is stored with the protective jig for the wooden shaft member according to any one of claims 1 to 5 attached thereto.

Images