JP7781408B2 - bundle - Google Patents

Description

The present invention relates to a beam, and more particularly to a beam that is fixed onto a concrete foundation and supports joists.

In buildings such as houses, the foundation required for laying floors is generally supported by joists and soffits, which are then supported by beams (floor joists) on a concrete foundation.

When wooden joists are used, the joists can become thinner over time, reducing their vertical thickness. As the joists become thinner, the strength with which the beams secure the joists weakens, causing the joists to become loose.

Technology that can prevent joists from rattling has been proposed in, for example, Patent Document 1 listed below. Patent Document 1 listed below discloses a beam comprising a turnbuckle, a base contact portion, a joist support portion, a shaft portion, and a joist fixing portion. The turnbuckle includes female threads formed at at least the upper and lower ends. The base contact portion is screwed into the lower end of the turnbuckle and comes into contact with the upper surface of the base. The joist support portion is screwed into the upper end of the turnbuckle and supports the joist. The shaft portion passes through the turnbuckle, base contact portion, and joist support portion, and its lower end is embedded in the base. The joist fixing portion is attached to the upper end of the shaft portion and secures the joist by clamping it together with the joist support portion.

JP 2013-209794 A

According to the bundle in Patent Document 1, the height of the joist support part can be adjusted by rotating the turnbuckle. Therefore, even if the joist thins over time, the height of the joist support part can be adjusted to match the thinner joist, and the thinner joist can be sandwiched between the joist support part and the joist fixing part. As a result, rattle of the joist can be suppressed.

On the other hand, in the bundle disclosed in Patent Document 1, the base contact portion and joist support portion are screwed into the lower and upper ends of the turnbuckles, respectively. As a result, a large force is required to rotate the turnbuckle in order to adjust the height of the joist support portion, making it difficult to suppress rattle in the joists.

The present invention aims to solve the above problem by providing a bundle that can easily suppress rattle of the joists.

A beam according to one aspect of the present invention is a beam fixed on a foundation made of concrete and supporting a joist, the beam comprising: a support post that contacts the upper surface of the foundation and includes a support hole extending in the vertical direction; an insertion part that includes a lower end inserted into the support hole and an insertion part hole extending in the vertical direction; a girder support part that is fixed to the insertion part and supports the joist; a shaft part that passes through each of the support hole and the insertion part hole and includes a lower end that is embedded in the foundation; a girder fixing part that is provided on the shaft part and fixes the joist by clamping it together with the girder support part; and a fixing part that fixes the joist at an arbitrary restricting position in the insertion part. and a restricting portion that restricts downward movement of the insertion portion so that the portion above the position does not enter the support hole, the outer surface of the insertion portion is not screwed into the inner surface of the support hole, and the insertion portion is movable in the vertical direction relative to the support without being restricted in its downward movement by the restricting portion, and the support further includes a support body in which a support hole is formed, a female threaded portion formed only in a portion near the lower end of the support body on the inner surface of the support hole, and a base contact portion that is fixed by being screwed into the female threaded portion and comes into contact with the upper surface of the base.

In the above bundle, preferably, the restricting portion is fixed to the outer peripheral surface of the insertion portion and has a shape that prevents it from entering the support hole.

In the above bundle, preferably, the insertion portion further includes a first male threaded portion, and the restriction portion includes a nut threadably fitted onto the first male threaded portion.

In the above bundle, preferably, the shaft portion includes a second male threaded portion, and the joist fixing portion includes a nut threadedly fitted onto the second male threaded portion.

The above bundle preferably further comprises an anchor provided at the lower end of the shaft.

In the above bundle, preferably, each of the support posts, insertion portions, joist support portions, and restriction portions is movable relative to the shaft portion.

The bundle described in any one of claims 1 to 7 preferably has an insertion portion that moves upward when it receives an upward force while being restricted by the restricting portion.

This invention provides a bundle that can easily suppress rattle of the joists.

FIG. 1 is a front view schematically showing the configuration of a bundle in one embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 10 is a top view showing the configuration of the base contact portion. FIG. 2 is a top view showing the configuration of the joist support portion. FIG. 10 is a diagram showing the first step of a method for fixing joists to a foundation using bundles. FIG. 10 shows a second step in the method of fixing joists to a foundation using beams. FIG. 10 is a diagram showing the third step of a method for fixing joists to a foundation using bundles. FIG. 10 is a diagram showing the fourth step of a method for fixing joists to a foundation using bundles. FIG. 10 is a diagram showing a first step of the bundle adjustment method. FIG. 10 is a diagram showing a second step of the bundle adjustment method. FIG. 10 is a diagram showing a third step of the bundle adjustment method. FIG. 10 is a cross-sectional view schematically showing a configuration of a bundle in a first modified example of an embodiment of the present invention. FIG. 10 is a cross-sectional view schematically showing a clamping mechanism used in a second modified example of the embodiment of the present invention.

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

Figures 1 and 2 are schematic diagrams showing the configuration of a bundle in one embodiment of the present invention. Figure 1 is a front view, and Figure 2 is a cross-sectional view taken along line II-II in Figure 1. Note that Figure 2 shows an enlarged view of a portion of the bundle.

Referring to Figures 1 and 2, the beam (floor beam) 100 (an example of a beam) of this embodiment is fixed to a concrete foundation under the first floor of a house, for example. The beam 100 supports the joists and plays a role in transmitting the load of the floor to the ground.

The bundle 100 is primarily made of, for example, steel, and includes a support post 1 (an example of a support post), an insertion portion 2 (an example of an insertion portion), a joist support portion 3 (an example of a joist support portion), a shaft portion 4 (an example of a shaft portion), a joist fixing portion 5 (an example of a joist fixing portion), a restricting portion 6 (an example of a restricting portion), and an anchor (wheel anchor) 7 (an example of an anchor). The support post 1 contacts the upper surface of the foundation. The support post 1 includes a support body 11 (an example of a support body), a foundation contact portion 12 (an example of a foundation contact portion), a support hole 13 (an example of a support hole), and a female thread portion 14.

The support body 11 has a generally cylindrical shape. The outer peripheral surface of the vertical center of the support body 11 bulges outward. When viewed in a cross section perpendicular to the central axis AX of the bundle 100, the cross-sectional area of the vertical center of the support body 11 is preferably larger than the cross-sectional areas of the upper and lower ends of the support body 11. This makes the support body 11 easier to grip.

The base contact portion 12 is fixed to the support body 11, for example, near the lower end portion 11a. The base contact portion 12 contacts the upper surface of the base. The base contact portion 12 is fixed to the lower end portion 11a of the support body 11 by screwing. The base contact portion 12 includes a plate 121 and a male thread portion 122. The lower surface of the plate 12 contacts the upper surface of the base. The male thread portion 122 extends upward from the plate 121.

The support hole 13 is formed inside each of the support body 11 and the base contact portion 12. The support hole 13 is coaxial with the central axis AX and extends in the vertical direction.

The female thread portion 14 is formed only on the inner surface of the support hole 13 near the lower end portion 11a of the support body 11. The male thread portion 122 is threadably fitted into the female thread portion 14.

The insertion section 2 adjusts the height of the joist support section 3. The insertion section 2 has a generally cylindrical shape. The portion of the insertion section 2, including the lower end section 2a, is inserted into the support hole 13. The insertion section 2 adjusts the height of the joist support section 3. The insertion section 2 includes an insertion section main body 21, an insertion section hole 22 (an example of an insertion section hole), and a male thread section 23 (an example of a first male thread section).

The insertion section body 21 has a generally cylindrical shape. When viewed in a cross section perpendicular to the central axis AX, the insertion section body 21 has a generally uniform cross section throughout the entire vertical direction.

The insertion hole 22 is formed inside the insertion body 21. The insertion hole 22 is coaxial with the central axis AX and extends in the vertical direction. No internal threads are formed on the inner peripheral surface of the insertion hole 22.

The male thread portion 23 is formed on the outer peripheral surface of the insertion portion body 21. The male thread portion 23 may be formed on only a portion of the outer peripheral surface of the insertion portion body 21, or may be formed on the entire outer peripheral surface of the insertion portion body 21. The male thread portion 23 is not intended to be threadedly fitted into the inner peripheral surface of the support hole 13.

The joist support portion 3 supports the joist from below. It is fixed to the insertion portion 2, for example, near the upper end portion 2b. It is plate-shaped and contacts the underside of the joist. It is fixed to the insertion portion 2 by, for example, welding or adhesive. It may also be fixed to the upper end portion 2b of the insertion portion 2 by screwing. The joist support portion 3 includes a joist support portion 31 and a rubber sheet 32. The joist support portion 31 is plate-shaped and supports the joist from below. The rubber sheet 32 is provided on the upper surface of the joist support portion 31 and contacts the joist. The rubber sheet 32 serves to protect the portion of the joist that is subjected to pressure from the joist support portion 31.

The joist support portion 3 may further include a wall portion that contacts the side of the joist and extends approximately perpendicular to the joist receiving portion 31.

The shaft portion 4 passes through each of the support post hole 13 and the insertion portion hole 22. The lower end portion 4a of the shaft portion 4 is embedded in the foundation. The shaft portion 4 is not fixed to any of the support post 1, insertion portion 2, joist support portion 3, or restriction portion 6. The support post 1, insertion portion 2, joist support portion 3, and restriction portion 6 are each movable relative to the shaft portion 4. The lower end portion 4a of the shaft portion 4 is embedded in the foundation.

The shank 4 is divided into five regions RG1, RG2, RG3, RG4, and RG5 from the lower end 4a to the upper end 4b. Region RG1 near the lower end 4a of the shank 4 is exposed from both the support hole 13 and the insertion hole 22. Region RG2 adjacent to region RG1 on the shank 4 is inserted into the support hole 13 but is exposed from the insertion hole 22. Region RG3 adjacent to region RG2 on the shank 4 is inserted into both the support hole 13 and the insertion hole 22. Region RG4 adjacent to region RG3 on the shank 4 is inserted into the insertion hole 22 but is exposed from the support hole 13. Region RG5 adjacent to region RG4 on the shank 4 is exposed from both the support hole 13 and the insertion hole 22.

The shaft portion 4 includes a shaft portion main body 41 and a male thread portion 42. The shaft portion main body 41 extends in the vertical direction. The male thread portion 42 is formed on the outer peripheral surface of the shaft portion main body 41. The male thread portion 42 may be formed only on a partial area of the outer peripheral surface of the shaft portion main body 41, or may be formed on the entire outer peripheral surface of the shaft portion main body 41.

The siding fixing portion 5 is located near the upper end 4b of the shaft portion 4. The siding fixing portion 5 secures the siding by clamping it together with the siding support portion 3. This clamping force is a vertical force in Figure 1. The position at which the siding fixing portion 5 is fixed relative to the shaft portion 4 can be changed in the vertical direction. In this embodiment, the siding fixing portion 5 includes a nut 51 (an example of a siding fixing portion nut), a washer 52, and a plate 53. The nut 51 is threadedly fitted onto the male thread portion 42a (an example of a second male thread portion). The male thread portion 42a corresponds to the portion of the male thread portion 42 near the upper end 4b of the shaft portion 4. The vertical position of the nut 51 can be adjusted by adjusting the fitting position of the nut 51 relative to the male thread portion 42a. The nut 51 applies force to the top surface of the siding.

The washer 52 is fitted into the shaft portion 4 at a position between the nut 51 and the plate 53. The washer 52 includes an insertion hole 521 for inserting the shaft portion 4.

The plate 53 is fitted into the shaft 4 at a position below the washer 52. The plate 53 is the part that comes into contact with the joist and serves to increase the area of the part that applies force to the joist. The plate 53 has, for example, a circular planar shape. The plate 53 includes an insertion hole 531 for inserting the shaft 4.

The method of fixing the joist fixing portion 5 to the shaft portion 4 may be a method other than fitting with screws.

The male thread portion 42a near the upper end 4b of the shaft portion 4 is used to threadably fit the joist fixing portion 5 onto the shaft portion 4 when the joist fixing portion 5 includes a nut 51. In this embodiment, to facilitate machining of the shaft portion 4, the shaft portion 4 is made of a cut bolt, and the male thread portion 42 is formed all over the shaft portion 4.

If the joist fixing portion 5 consists of something other than a nut, it is not necessary for the male thread portion 42a to be formed near the upper end 4b of the shaft portion 4. Also, if the joist fixing portion 5 includes a nut, it is sufficient that the male thread portion 42a be formed at least near the upper end 4b of the shaft portion 4.

The restricting portion 6 restricts downward movement of the insertion portion 2 so that the portion of the insertion portion 2 above an arbitrary restricting position PO (the portion including the upper end 2b of the insertion portion 2) does not enter the support hole 13. In this embodiment, the restricting portion 6 is fixed to the outer peripheral surface of the insertion portion 2. The restricting portion 6 has a shape that prevents it from entering the support hole 13. The position on the insertion portion 2 corresponding to the underside of the restricting portion 6 is the restricting position PO. The restricting position PO can be adjusted by changing the position to which the restricting portion 6 is fixed.

The insertion section 2 is not constrained to the support 1. The insertion section 2 is movable up and down relative to the support 13, with its downward movement not restricted by the restricting section 6. When the lower end 2a of the insertion section 2 is inserted into the support hole 13, the insertion section 2 moves downward relative to the support 1 due to its own weight, and the insertion section 2 comes to a standstill at a position where the bottom surface of the restricting section 6 contacts the top surface 1a of the support 1. A force equivalent to the weight of the insertion section 2 and joist support section 3 is applied to the top surface 1a of the support 1 via the restricting section 6.

In this stationary state, the portion of the insertion portion 2 below the restriction position PO (the portion including the lower end 2a of the insertion portion 2) is inserted into the support hole 13. The portion of the insertion portion 2 above the restriction position PO is exposed from the support hole 13. In this way, the restriction portion 6 restricts the downward movement of the insertion portion 2 so that the portion of the insertion portion 2 above the restriction position PO does not enter the support hole 13.

Note that the restricting portion 6 does not restrict the upward movement of the restricting portion 6. Therefore, if the restricting portion 6 restricts the downward movement of the insertion portion 2 and the insertion portion 2 receives an upward force, the insertion portion 2 will move upward.

In this embodiment, the restricting portion 6 includes a nut 61 (an example of a restricting portion nut) and a washer 62. The nut 61 is threadedly fitted onto the male threaded portion 23. The vertical position of the nut 61 varies depending on the fitting position of the nut 61 relative to the male threaded portion 23. The restricting position PO is adjusted by the vertical position of the nut 61.

The washer 62 is fitted between the nut 61 and the support body 11. The washer 62 includes an insertion hole 621 for inserting the insertion section 2.

The restricting portion 6 may restrict the downward movement of the insertion portion 2 in a manner other than that described above.

The anchor 7 is provided at the lower end 4a of the shaft 4. The anchor 7 covers the lower end 4a of the shaft 4 and is threadedly fitted onto the male threaded portion 42b (an example of a third male threaded portion). The male threaded portion 42b corresponds to the portion of the male threaded portion 42 near the lower end 4a of the shaft 4. By providing the anchor 7, the bundle 100 can be more stably fixed to the base. Note that the anchor 7 may also be fixed to the lower end 4a of the shaft 4 by other methods, such as adhesive.

If the anchor 7 is fixed to the lower end 4a of the shank 4 by a method other than threaded engagement, it is not necessary for the male thread portion 42b to be formed near the lower end 4a of the shank 4. Also, if the anchor 7 is fixed to the lower end 4a of the shank 4 by threaded engagement, it is sufficient that the male thread portion 42b be formed at least near the lower end 4a of the shank 4.

Figure 3 is a top view showing the configuration of the base contact portion.

Referring to FIG. 3, the base contact portion 12 further includes a plurality of holes 123 and a connection hole 124. Each of the plurality of holes 123 is for passing a screw to secure the bundle 100 to the base. The connection hole 124 is formed in the center of the plate 121. The connection hole 124 is connected to the support hole 13. A male thread portion 122 is formed around the connection hole 124. The area around the male thread portion 122 on the plate 121 is locally raised upward.

Figure 4 is a top view showing the configuration of the joist support section.

Referring to Figure 4, in the beam support section 3, most of the upper surface of the beam receiving section 31 is covered with a rubber sheet 32. A connection hole 311 is formed in the beam receiving section 31. A connection hole 321 is formed in the rubber sheet 32. Each of the connection holes 311 and 321 is formed at the position of the central axis AX. Each of the connection holes 311 and 322 is connected to the insertion section hole 22.

A shaft portion 4 is inserted into each of the connection holes 311 and 322. The connection hole 321 is larger than the connection hole 311, and a portion of the support portion 31 is exposed through the connection hole 321. The portion of the support portion 31 around the connection hole 311 is recessed downward. The rubber sheet 32 may be attached to the support portion 31.

Next, we will explain how to secure the joists to the base using beams using Figures 5 to 8. For ease of explanation, Figure 7 shows the portion of the insertion section 2 inserted into the support hole 13.

Referring to Figure 5, first, determine the location where you want to install the bundle 100, for example, on the base BS, and drill a hole at that location. Next, insert the anchor 7 into the hole. This secures the anchor 7 within the base BS.

Referring to Figure 6, next, the lower end 4a of the shaft 4 is fitted into the anchor 7, thereby securing the shaft 4 to the anchor 7. When securing the shaft 4 to the anchor 7, it is preferable that the joist fixing portion 5 is removed from the shaft 4. Once the shaft 4 is secured to the anchor 7, the support 1 moves downward along the shaft 4 due to its own weight. As a result, the base contact portion 12 comes into contact with the upper surface of the base BS. The base contact portion 12 is secured to the base BS with screws (not shown), adhesive, or the like. The insertion portion 2, joist support portion 3, and restricting portion 6 also move downward along the shaft 4 due to their own weight. The insertion portion 2, joist support portion 3, and restricting portion 6 all move together until the lower surface of the restricting portion 6 contacts the upper surface 1a of the support 1.

Referring to Figure 7, next, the height L1 of the contact surface between the joist support part 3 and the joist (here, the length from the top surface of the base BS to the top surface of the rubber sheet 32) is adjusted to the planned height at which the joist will be installed. Height L1 is adjusted by adjusting the restriction position PO (in other words, the position at which the restriction part 6 in the insertion part 2 is fixed).

Specifically, when the restricting portion 6 is moved toward the lower end 2a of the insertion portion 2, the restricting position PO moves toward the lower end 2a of the insertion portion 2. The portion of the insertion portion 2 inserted into the support hole 13 decreases, and the length L11 of the portion of the insertion portion 2 exposed from the support hole 13 increases. The length L12 from the top surface of the base BS to the top surface of the support body 11 (i.e., the vertical length of the support 1) is constant. Height L1 is equivalent to the sum of lengths L11, L12, and the vertical thickness of the joist support portion 3. Therefore, as length L11 increases, height L1 also increases. On the other hand, when the restricting portion 6 is moved toward the upper end 2b of the insertion portion 2, the restricting position PO moves toward the upper end 2b of the insertion portion 2. The portion of the insertion portion 2 inserted into the support hole 13 increases, and the length L11 of the portion of the insertion portion 2 exposed from the support hole 13 decreases. As a result, height L1 decreases.

When the restricting portion 6 is fixed to the insertion portion 2 by threading the nut 61 onto the male thread portion 23, rotating the nut 61 in the direction indicated by arrow AR1 moves the restricting portion 6 toward the lower end 2a of the insertion portion 2, increasing the height L1. When the nut 61 is rotated in the direction indicated by arrow AR2, the restricting portion 6 moves toward the upper end 2b of the insertion portion 2, decreasing the height L1.

Referring to Figure 8, next, a joist WD made of wood with a pre-formed hole PL is prepared, and the joist WD is placed on the joist support part 3 by inserting the shank 4 into the hole PL. By inserting the shank 4 into the hole PL, the joist WD can be more stably placed on the joist support part 3. At this point, the joist WD may be further secured to the joist support part 3 with screws.

Then, the joist fixing part 5 is fitted onto the shaft part 4 from the upper end 4b, and the joist fixing part 5 is moved downward along the shaft part 4, thereby tightening the joist WD from above with the joist fixing part 5. This sandwiches the joist WD between the joist support part 3 and the joist fixing part 5. If the joist fixing part 5 includes a nut 51, the joist fixing part 5 can be moved by rotating the nut 51.

When the joist WD is sandwiched between the joist support part 3 and the joist fixing part 5, the height of the contact surface with the joist at the joist fixing part 5 (here, the length from the top surface of the base BS to the bottom surface of the joist fixing part 5) L2 corresponds to the sum of the height L1 and the thickness d1 of the joist WD.

Through the above steps, the joists WD are fixed onto the base BS.

Next, we will use Figures 9 to 11 to explain how to adjust the beam when the joist has thinned over time and its vertical thickness has decreased. For ease of explanation, Figure 10 shows the portion of the insertion section 2 inserted into the support hole 13.

Referring to Figure 9, we will assume that the joist WD has thinned over time, causing the vertical thickness of the joist WD to change from thickness d1 (Figure 8) to thickness d2 (d1 > d2). In this case, a gap will form between the joist support part 3 and the joist WD, or between the joist fixing part 5 and the joist WD. The force clamping the joist WD between the joist support part 3 and the joist fixing part 5 will weaken, causing the joist WD to wobble.

Referring to Figure 10 , if the joist WD becomes loose, the joist support part 3 is held by hand or other means to prevent the insertion part 2 from rotating, and the nut 61 is rotated in the direction indicated by arrow AR2. Preferably, the insertion part 2 and the joist support part 3 are manually moved upward (reducing the portion of the insertion part 2 inserted into the support hole 13) before the nut 61 is rotated. Rotating the nut 61 moves the restricting part 6 and the restricting position PO downward toward the lower end 2a of the insertion part 2. As the restricting part 6 and the restricting position PO move downward, the portion of the insertion part 2 inserted into the support hole 13 decreases. The length L11 of the portion of the insertion part 2 exposed from the support hole 13 increases. The joist support part 3 rises, narrowing the gap between the joist support part 3 and the joist fixing part 5. As a result, the joist WD can be clamped again between the joist support part 3 and the joist fixing part 5.

If the joist WD becomes loose, it is preferable that only the restricting part 6 be moved, as described above, and the joist fixing part 5 not be moved. The height L2 of the contact surface between the joist WD and the joist fixing part 5 determines the height of the top surface of the joist WD from the base BS and the height of the floor subfloor, and these heights do not change over time.

Referring to Figure 11, when only the restricting portion 6 is moved, the height of the contact surface between the joist support portion 3 and the joist WD increases to height L3, which corresponds to the difference between height L2 and thickness d2.

On the other hand, if rattle occurs in the joist WD, the joist fixing part 5 can be moved downward along the shaft part 4 by moving the restricting part 6 as described above and rotating the nut 51, for example. In this case, the amount of movement of the restricting part 6 can be reduced.

The above steps complete the adjustment of the bundle 100. Note that the adjustment of the bundle 100 described above can be performed at any time, not just when the joists have thinned over time.

[Effects of the embodiment]

According to this embodiment, the height of the joist support part can be adjusted by adjusting the restricting position of the insertion part using the restricting part. This allows the height of the joist support part to be adjusted with less force than conventional technology that involves rotating a turnbuckle, and by sandwiching the joist between the joist support part and the joist fixing part, rattle of the joist can be easily suppressed.

In addition, the restricting portion is fixed to the outer surface of the insertion portion and has a shape that prevents it from entering the support hole, making it easy to adjust the restricting position on the insertion portion.

In addition, the nut of the restricting part is threadedly fitted into the insertion part, making it easy to adjust the restricting position of the insertion part.

In addition, the nuts for the joist fixing parts are threadedly fitted onto the shaft, making it easy to adjust the position of the joist fixing parts on the shaft.

In addition, by providing an anchor at the lower end of the shaft, the bundle can be more stably fixed to the base.

In addition, the support posts include base contact portions, which allow the bundle to be more stably fixed to the base.

Furthermore, since the support, insertion portion, joist support portion, and regulating portion are each movable relative to the shaft portion, the support can be easily brought into contact with the upper surface of the base regardless of the length of the shaft portion.
Furthermore, when the insertion portion receives an upward force while being restricted by the restricting portion, the insertion portion moves upward, so that the height of the joist support portion can be easily increased.

[Variations]

Figure 12 is a cross-sectional view schematically showing the configuration of a bundle in a first variant of an embodiment of the present invention.

Referring to Figure 12, the base contact portion 12 may be formed integrally with the support body 11. Furthermore, in addition to being fixed to the support body 11 by screwing as described above, the base contact portion 12 may also be fixed to the support body 11 by methods such as welding or adhesive.

Figure 13 is a cross-sectional view schematically showing a clamping mechanism used in a second modified example of an embodiment of the present invention.

Referring to Figure 13, the clamp mechanism 8 is called a sheet clamp and includes a U-shaped portion 81, a male threaded portion 82, and an insertion hole 83. The U-shaped portion 81 includes female threaded portions 811 and 812 at both ends. The male threaded portion 82 is threadedly fitted into each of the female threaded portions 811 and 812. The male threaded portion 82 is fitted into the female threaded portion 811, and then into the female threaded portion 812. The U-shaped portion 81 and the male threaded portion 82 form the insertion hole 83 of the clamp mechanism. An object to be fixed by the clamp mechanism (such as the insertion portion 2) is inserted into the insertion hole 83. The distance t between the two ends of the U-shaped portion 81 changes depending on the amount of tightening of the male threaded portion 82 relative to the female threaded portion 812, changing the size of the insertion hole 83. Therefore, by increasing the engagement of the male threaded portion 82 with the female threaded portion 812, the size of the insertion hole 83 decreases, and the clamping mechanism 8 is fixed to the outer surface of the object. By decreasing the engagement of the male threaded portion 82 with the female threaded portion 812, the size of the insertion hole 83 increases, and the clamping mechanism 8 is released from the inserted object.

The restricting portion 6 may be configured as a clamp mechanism 8 fixed to the outer peripheral surface of the insertion portion 2. In this case, the insertion portion 2 is inserted into the insertion hole 83. Because the restricting portion 6 has a shape that prevents it from entering the support hole 13, the insertion portion 2 is restricted from entering the support hole 13.

The restricting portion 6 may be configured as a clamp mechanism 8 fixed to the support 1. In this case, the insertion hole 83 is connected to the support hole 13, and the insertion portion 2 is inserted into the insertion hole 83. By tightening the insertion hole 83, the insertion portion 2 is fixed to the support 1, and the insertion portion 2 is restricted from entering the support hole 13.

The joist fixing portion 5 may be configured as a clamp mechanism 8 provided on the outer peripheral surface of the shaft portion 4. In this case, the shaft portion 4 is inserted into the insertion hole 83.

[others]

In this embodiment, the case where the beams are made of steel has been described, but the beams may be made of a material other than steel, such as aluminum, iron, resin, or plastic. The joists may be made of a material other than wood, such as steel or iron. According to this embodiment, rattle can be suppressed even when the joists are made of a material other than wood.

The above-described embodiments and variations should be considered in all respects as illustrative and not restrictive. The scope of the present invention is indicated by the claims, not the above description, and is intended to include all modifications that are equivalent in meaning to and within the scope of the claims.

1 Support 1a Upper surface of support 2 Insertion part (an example of an insertion part)
2a Lower end of insertion portion 2b Upper end of insertion portion 3 Joist support portion (an example of a joist support portion)
4. Shaft (an example of a shaft)
4a Lower end of shaft portion 4b Upper end of shaft portion 5 Joist fixing portion (an example of a joist fixing portion)
6. Restriction unit (an example of a restriction unit)
7. Anchor (an example of an anchor)
8 Clamping mechanism 11 Support body of support (an example of a support body)
11a Lower end of the support body 12 Base contact portion of the support (an example of the base contact portion)
13 Post hole (example of post hole)
14 Female thread portion of support 21 Insertion portion body of insertion portion 22 Insertion portion hole of insertion portion (an example of an insertion portion hole)
23 Male thread portion of insertion portion (an example of a first male thread portion)
31: Support portion of joist support portion 32: Rubber sheet of joist support portion 41: Shaft body of joist portion 42, 42a, 42b: Male thread portion of joist portion (examples of second and third male thread portions)
51 Joist fixing part nut (an example of a joist fixing part nut)
52 Washer of joist fixing portion 53 Plate of joist fixing portion 61 Nut of restricting portion (an example of a nut of a restricting portion)
62 Washer of restricting portion 81 U-shaped portion of clamp mechanism 82 Male thread portion of clamp mechanism 83 Insertion hole of clamp mechanism 100 Bundle (floor bundle) (example of bundle)
121 Plate of base contact portion 122 Male thread portion of base contact portion 123 Hole of base contact portion 124 Connection hole of base contact portion 311 Connection hole of support portion 321 Connection hole of rubber sheet 521, 621 Insertion hole of washer 531 Insertion hole of plate 811, 812 Female thread portion of U-shaped portion AX Central axis RG1, RG2, RG3, RG4, RG5 Area of axis portion

Claims (7)

A beam fixed on a concrete foundation and supporting joists,
A support column that contacts the upper surface of the base and includes a support column hole extending in the vertical direction;
an insertion portion including a lower end portion inserted into the support hole and an insertion portion hole extending in the vertical direction;
a joist support portion fixed to the insertion portion and supporting the joist;
a shaft portion that passes through each of the support hole and the insertion portion hole, the shaft portion including a lower end portion that is embedded in the base;
a joist fixing portion provided on the shaft portion and configured to fix the joist by sandwiching the joist together with the joist support portion;
a restricting portion that restricts downward movement of the insertion portion so that a portion of the insertion portion above an arbitrary restricting position does not enter the support hole,
The outer peripheral surface of the insertion portion is not fitted into the inner peripheral surface of the support hole by a screw action,
the insertion portion is movable in the up and down direction relative to the support rod in a state in which downward movement of the insertion portion is not restricted by the restricting portion,
The support bundle further includes a support body in which the support hole is formed, a female threaded portion formed only on the inner surface of the support hole near the lower end of the support body, and a base contact portion that is fixed to the female threaded portion by fitting with a screw action and contacts the upper surface of the base . The bundle described in claim 1, wherein the restricting portion is fixed to the outer peripheral surface of the insertion portion and has a shape that prevents it from entering the support hole. the insert further includes a first externally threaded portion;
The bundle of claim 2 , wherein the restricting portion includes a nut threadedly fitted onto the first externally threaded portion. the shank includes a second externally threaded portion,
The bundle according to any one of claims 1 to 3, wherein the joist fixing portion includes a nut screwed onto the second male thread portion. The bundle described in any one of claims 1 to 4, further comprising an anchor provided at the lower end of the shaft. The bundle according to any one of claims 1 to 5 , wherein each of the support posts, the insertion portions, the joist support portions, and the restriction portions is movable relative to the shaft portions. The bundle according to any one of claims 1 to 6 , wherein when the insertion portion receives an upward force in a state where it is restricted by the restriction portion, the insertion portion moves upward.