Floor expansion joint

Abstract

The objective is to minimize the height difference between the first and second floor sections and the independent boards, even when using thick independent boards to connect the first and second floor sections, and to limit the range of movement of the independent boards relative to the first or second floor section. [Solution] The floor expansion joint comprises a first floor section provided in one building, a second floor section provided in the other building, separated from the first floor section and arranged along the same floor surface as the first floor section, an independent plate positioned between the first and second floor sections and arranged along the floor surface, a support section attached to the first or second floor section and supporting the independent plate from below so that the independent plate can move along the floor surface, and a limiting section provided on the lower surface of the independent plate and limiting the range of movement of the independent plate relative to the support section.

Description

Technical Field

[0001] The present disclosure relates to a floor expansion joint.

Background Art

[0002] The expansion joint described in Patent Document 1 is an expansion joint between two adjacent buildings. Wooden flooring materials are respectively installed on both buildings. The flooring material at the expansion joint portion consists of a plurality of pieces of wood. Each piece of wood is divided into two parts such that the hypotenuse surfaces face each other when viewed in a plane, and the space between the two hypotenuse surfaces is connected by a spring. A joint is provided between the parallel pieces of wood, and both ends of each piece of wood are pin-joined to the joists installed on both buildings using bolts.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] A pair of buildings may be connected via a floor expansion joint. Conventionally, the first floor portion of one building, the floor portion of the other building, and an independent plate disposed between the first floor portion and the second floor portion are formed using a thin aluminum plate or the like. For this reason, the step between the existing floor portion and the independent plate could be reduced.

[0005] On the other hand, when both buildings are wooden, the first floor portion of one building and the second floor portion of the other building are thick wooden boards with a thickness of about 25 to 30 mm. Also, in order to ensure the appearance, it is desirable that the independent plate is also a thick wooden board with a thickness of about 25 to 30 mm. However, with such a structure, the step between the existing floor portion and the independent plate becomes large.

[0006] Furthermore, in such a configuration, the range of movement of the independent plates relative to the first or second floor section must be limited during an earthquake.

[0007] The object of this disclosure is to reduce the height difference between the first and second floor sections and the independent plate, and to limit the range of movement of the independent plate relative to the first or second floor section, even when an independent plate with a thick plate thickness is used to connect the first and second floor sections, which have thick plates. [Means for solving the problem]

[0008] The floor expansion joint according to the first embodiment is a floor expansion joint used between a pair of adjacent buildings, and is characterized by comprising: a first floor section provided in one building; a second floor section provided in the other building, spaced apart from the first floor section and arranged along the same floor surface as the first floor section; an independent plate positioned between the first floor section and the second floor section and arranged along the floor surface; a support section attached to the first floor section or the second floor section, supporting the independent plate from below so that the independent plate can move along the floor surface; and a limiting section provided on the lower surface of the independent plate, limiting the range of movement of the independent plate relative to the support section.

[0009] According to the above embodiment, even when a thick independent plate is used to connect the first floor section and the second floor section, which have thicker plates, the height difference between the first and second floor sections and the independent plate can be reduced, and the range of movement of the independent plate relative to the first or second floor section can be limited.

[0010] The floor expansion joint according to the second embodiment is characterized in that, in the floor expansion joint according to the first embodiment, the limiting portion is configured to include a protruding portion that protrudes from the lower surface of the independent plate and an insertion portion formed in the support portion into which the protruding portion is movably inserted.

[0011] According to the above embodiment, the appearance performance can be improved compared to the case where the restricting portion is visible from the outside.

[0012] The floor expansion joint according to the third embodiment is characterized in that, in the floor expansion joint described in the first or second embodiment, a restricting section is provided that restricts the relative position between the first floor section and the independent plate and the relative position between the second floor section and the independent plate during normal times, and the restriction by the restricting section is released during an earthquake.

[0013] According to the above embodiment, compared to the case where the independent plate can be moved during normal operation, the gap between the first floor section and the independent plate, and the gap between the second floor section and the independent plate, can be made to appear constant during normal operation. [Effects of the Invention]

[0014] According to this disclosure, even when a thick independent plate is used to connect the first floor section and the second floor section, which have thicker plates, the height difference between the first and second floor sections and the independent plate can be reduced, and the range of movement of the independent plate relative to the first or second floor section can be limited. [Brief explanation of the drawing]

[0015] [Figure 1] This is a front view showing a pair of buildings connected by floor expansion joints according to the embodiments of this disclosure. [Figure 2] This is an exploded perspective view showing a floor expansion joint according to an embodiment of the present disclosure. [Figure 3] This is a perspective view showing a floor expansion joint according to an embodiment of the present disclosure. [Figure 4] (A)(B) A plan view and a front view of a floor expansion joint according to an embodiment of the present disclosure, in a normal state. [Figure 5] (A)(B) These are cross-sectional views showing the limiting portion and restricting portion in a floor expansion joint according to an embodiment of the present disclosure under normal conditions. [Figure 6] (A)(B) Plan view and sectional view showing the state of vibrating in the width direction during an earthquake, which are floor expansion joints according to an embodiment of the present disclosure. [Figure 7] (A)(B) Plan view showing the state of vibrating in the depth direction during an earthquake, which is a floor expansion joint according to an embodiment of the present disclosure. [Figure 8] (A)(B) Perspective view showing the engaged state and the non-engaged state of the engaged member at the end of the floor expansion joint according to an embodiment of the present disclosure. [Figure 9] (A)(B) Perspective view showing a floor expansion joint according to a deformation form of the floor expansion joint according to an embodiment of the present disclosure. [Figure 10] (A)(B) Perspective view showing the state of vibrating in the width direction during an earthquake, which is a floor expansion joint according to a deformation form of the floor expansion joint according to an embodiment of the present disclosure. [Figure 11] (A)(B) Perspective view showing the state of vibrating in the width direction during an earthquake, which is a floor expansion joint according to a deformation form of the floor expansion joint according to an embodiment of the present disclosure. [Figure 12] (A)(B) Perspective view showing the engaged state and the non-engaged state of the engaged member, which is a floor expansion joint according to a deformation form of the floor expansion joint according to an embodiment of the present disclosure.

Mode for Carrying Out the Invention

[0016] An example of a floor expansion joint according to an embodiment of the present disclosure will be described with reference to FIGS. 1 to 12. The arrow H shown in each figure indicates the vertical direction, which is the up-and-down direction of the floor expansion joint. The arrow W shown in each figure indicates the width direction of the floor expansion joint, which is a horizontal direction orthogonal to the arrow H. The arrow D shown in each figure indicates the depth direction of the floor expansion joint, which is a horizontal direction orthogonal to the arrows H and W.

[0017] (Floor expansion joint 100) As shown in FIG. 1, the floor expansion joint 100 (hereinafter referred to as "E / joint 100") is provided between a wooden building 110 and a wooden building 120 facing the building 110 in the width direction, and is used to connect the building 110 and the building 120. The displacement of the building 110 during an earthquake is different from the displacement of the building 120 during an earthquake, and the E / joint 100 is adapted to absorb this relative displacement.

[0018] Specifically, the E / joint 100 includes a floor portion 10 provided in the building 110 and a floor portion 20 provided in the building 120. Further, the E / joint 100 includes an independent plate 30 disposed between the floor portion 10 and the floor portion 20, and a support plate 40 that supports the independent plate 30 from below. The floor portion 10 is an example of a first floor portion, the floor portion 20 is an example of a second floor portion, and the support plate 40 is an example of a support portion.

[0019] And this E / joint 100 extends in the depth direction and is symmetric with respect to the center of the E / joint 100 in the depth direction.

[0020] 〔Floor portion 10〕 The floor section 10 is made of thick wood and, as shown in Figure 1, is attached to the end of the corridor 112a at the entrance 112 of the building 110. The floor section 10 is a plate-like structure with its thickness oriented vertically, as shown in Figures 1 and 2, and has an upward-facing upper surface 10a and a downward-facing lower surface 10b. Furthermore, the floor section 10 has a projection 12 that protrudes downward from the lower surface 10b. In this embodiment, as an example, the thickness of the floor section 10 is approximately 25 to 30 mm.

[0021] Specifically, the projection 12 is rectangular in shape, extending in the width direction when viewed from the depth direction, and is positioned on the corridor 112a side relative to the center of the lower surface 10b in the width direction. The projection 12 also extends in the depth direction. The end face of the corridor 112a is in contact with one end face of the projection 12 in the width direction (left side in the figure).

[0022] [Floor section 20] The floor section 20 is made of thick wood and, as shown in Figure 1, is positioned on the other side in the width direction (right side in the figure) relative to the floor section 10, and is spaced apart from the floor section 10. Furthermore, the floor section 20 is attached to the upper end of the top riser board 122a of the staircase 122 provided in the building 120. In this embodiment, as an example, the thickness of the floor section 20 is approximately 25 to 30 mm, which is the same thickness as the floor section 10.

[0023] As shown in Figures 1 and 2, the floor section 20 is L-shaped when viewed from the depth direction and has a base section 22 extending in the width direction and a projection section 24 projecting downward from the other end of the base section 22 in the width direction. The base section 22 of the floor section 20 has an upper surface 22a facing upward and a lower surface 22b facing downward. Here, the upper surface 22a of the floor section 20 is positioned on the same surface as the upper surface 10a of the floor section 10. In other words, the floor section 20 is positioned along the same floor surface as the floor section 10. Here, when we say that the floor section 20 is positioned along the same floor surface as the floor section 10, it includes the case where the upper surface 22a of the floor section 20 is positioned on the same surface as the upper surface 10a of the floor section 10, and the case where the surface extended from the upper surface 22a of the floor section 20 is parallel to the upper surface 10a of the floor section 10.

[0024] Furthermore, the upper end of the kick plate 122a is in contact with one end face and the lower surface 22b of the projection 24 in the width direction.

[0025] [Independent board 30] The independent plate 30 is made of thick wood and is positioned between the floor section 10 and the floor section 20, as shown in Figure 1. Furthermore, during normal times when no earthquake occurs, the independent plate 30 is separated from the floor section 10 in the width direction and also separated from the floor section 20 in the width direction. In this embodiment, as an example, the gap L1 between the independent plate 30 and the floor section 10 during normal times is 10 [mm], and the gap L2 between the independent plate 30 and the floor section 20 is 10 [mm] (see Figures 4(A) and (B)). In this embodiment, as an example, the thickness of the independent plate 30 is about 25 to 30 [mm], which is the same thickness as the floor section 10 and the floor section 20.

[0026] As shown in Figures 1 and 2, the independent plate 30 is rectangular in shape, extending in the width direction when viewed from the depth direction, and has an upward-facing upper surface 30a and a downward-facing lower surface 30b. Here, the upper surface 30a of the independent plate 30 is positioned on the same surface as the upper surface 10a of the floor section 10 and the upper surface 22a of the floor section 20. In other words, the independent plate 30 is positioned along the same floor surface as the floor section 10 and the floor section 20.

[0027] Furthermore, engagement portions 34 are formed at both ends of the independent plate 30 in the depth direction. The engagement portions 34 protrude in the depth direction from the rectangular parallelepiped main body portion 32 of the independent plate 30. When viewed from the depth direction, the engagement portions 34 are positioned in the center in the width direction relative to the end face of the main body portion 32 which extends in the width direction, and when viewed from the depth direction, they have an isosceles trapezoidal shape. As a result, the engagement portions 34 have a pair of engagement surfaces 34a that face diagonally upward.

[0028] Furthermore, the lower surface 30b of the independent plate 30 is provided with multiple protrusions 36 that project downward. Specifically, the protrusions 36 project downward from the central part of the lower surface 30b in the width direction and are rectangular in shape when viewed from below, extending in the depth direction. The multiple protrusions 36 are arranged with intervals in the depth direction.

[0029] [Support plate 40] The support plate 40 is made of thick wood and, as shown in Figure 1, is positioned below the independent plate 30, supporting the independent plate 30 from below. Furthermore, the support plate 40 is attached to the floor 20.

[0030] As shown in Figures 1 and 2, the support plate 40 is rectangular in shape, extending in the width direction when viewed from the depth direction, and has an upper surface 40a facing upward and a lower surface 40b facing downward. The lower surface 30b of the independent plate 30 is in contact with the upper surface 40a of the support plate 40, so the support plate 40 supports the independent plate 30 from below.

[0031] Furthermore, the support plate 40 is spaced apart from the engaging portion 34 of the independent plate 30 in the depth direction. In other words, the upper surface 40a of the support plate 40 is in contact only with the main body portion 32 at the lower surface 30b of the independent plate 30.

[0032] Furthermore, the support plate 40 is attached to the floor portion 20 such that the other side of the upper surface 40a of the support plate 40 in the width direction is in contact with the lower surface 22b of the floor portion 20.

[0033] Furthermore, the support plate 40 has multiple through holes 42 that penetrate in the vertical direction. The protruding portions 36 of the independent plate 30 are movably inserted into these through holes 42. The through holes 42 are an example of insertion portions.

[0034] In this embodiment, under normal conditions, the through hole 42 and the protrusion 36 are separated in the width direction, as shown in Figure 5(A). In this embodiment, as an example, the gap L3 on one side in the width direction between the protrusion 36 and the through hole 42 under normal conditions is 10 [mm], and the gap L4 on the other side in the width direction between the protrusion 36 and the through hole 42 is 10 [mm]. Also, as shown in Figure 4(A), the through hole 42 and the protrusion 36 are in contact in the depth direction.

[0035] In this configuration, the independent plate 30 is movable relative to the support plate 40 by 10 mm to one side and 10 mm to the other side in the width direction. Furthermore, the independent plate 30 is not movable relative to the support plate 40 in the depth direction. Thus, the limiting portion 50 that restricts the range of movement of the independent plate 30 relative to the support plate 40 is composed of a protruding portion 36 and a through hole 42.

[0036] 〔others〕 The E / joint 100 is equipped with a restricting section 54 that, under normal conditions, restricts the relative position between the floor section 10 and the independent plate 30 in the width direction, and the relative position between the floor section 20 and the independent plate 30 in the width direction.

[0037] As shown in Figures 2 and 3, the restricting portion 54 comprises an engaging portion 34 formed on the aforementioned independent plate 30, and engaged members 56 and 58 that engage with the engaging portion 34. As shown in Figure 3, the engaged member 56 is positioned on one side in the width direction relative to the engaging portion 34, and the engaged member 58 is positioned on the other side in the width direction relative to the engaging portion 34. The engaged members 56 and 58 are symmetrical in shape with respect to the engaging portion 34.

[0038] Specifically, the engaged member 56 is sandwiched between the floor portion 10 and the engaging portion 34 in the width direction, and is trapezoidal when viewed from the depth direction. The engaged member 56 has an engaged surface 56a that contacts the engaging surface 34a of the engaging portion 34 on a surface surface, and an end surface 56b that contacts the end surface 10c facing the other side in the width direction of the floor portion 10 on a surface surface.

[0039] Similarly, the engaged member 58 is sandwiched between the floor portion 20 and the engaging portion 34 in the width direction and is trapezoidal when viewed from the depth direction. The engaged member 58 has an engaged surface 58a that contacts the engaging surface 34a of the engaging portion 34 on a surface surface, and an end surface 58b that contacts the end surface 20a of the floor portion 20 on one side in the width direction.

[0040] In this configuration, with the engaged members 56 and 58 positioned in an engagement position where they contact the engagement portion 34 in the width direction, the relative positions of the floor portion 10 and the independent plate 30 in the width direction, and the relative positions of the floor portion 20 and the independent plate 30 in the width direction, are restricted by the restricting portion 54.

[0041] On the other hand, when the engaged members 56 and 58 separate from the engaging portion 34 and become disengaged, the relative positions of the floor portion 10 and the independent plate 30 in the width direction and the relative positions of the floor portion 20 and the independent plate 30 in the width direction are not restricted.

[0042] The engaged members 56 and 58 are attached to the support plate 40, for example, by a string (not shown). Therefore, even if the engaged members 56 and 58 become disengaged from the engaging portion 34, the user can easily find them.

[0043] (action) Next, we will explain the function of the E / joint 100 during an earthquake, divided by the direction of vibration. Specifically, we will explain the case where building 110 and building 120, as shown in Figure 1, vibrate in the width direction and move closer together, and the case where building 110 and building 120 vibrate in the width direction and move further apart.

[0044] Furthermore, we will explain the cases where building 110 and building 120 vibrate in the depth direction, causing building 110 to move towards the back of building 120 in the depth direction, and where building 110 vibrates in the depth direction, causing building 120 to move towards the front of building 120 in the depth direction.

[0045] In normal conditions before an earthquake, the engaged members 56 and 58 are positioned in the engaged position as shown in Figure 3. This allows the restricting portion 54 to restrict the relative positions of the floor portion 10 and the independent plate 30 in the width direction, and the relative positions of the floor portion 20 and the independent plate 30 in the width direction.

[0046] [When building 110 and building 120 vibrate in the width direction and move closer together] When buildings 110 and 120, shown in Figure 1, vibrate in the width direction due to an earthquake, the engaged members 56 and 58, which were positioned at the engagement location, separate from the engagement portion 34 and become disengaged due to the vibration of buildings 110 and 120 in the width direction.

[0047] Then, as buildings 110 and 120 approach each other in the width direction, as shown in Figure 6(A), the support plate 40 moves in the width direction so that it approaches the floor portion 10, and the floor portion 10 and the independent plate 30 come into contact in the width direction, and the floor portion 20 and the independent plate 30 come into contact in the width direction. In this state, the protrusion 36 formed on the independent plate 30 comes into contact with the other edge in the width direction of the through hole 42 formed on the support plate 40. In this way, the limiting portion 50 restricts the range of movement of the independent plate 30 relative to the support plate 40. Furthermore, in the width direction, the end face of the support plate 40 comes into contact with the projection 12 formed on the floor portion 10 in the width direction.

[0048] In this way, the E / joint 100 absorbs the relative displacement between building 110 and building 120 caused by the earthquake.

[0049] [When building 110 and building 120 vibrate in the width direction and separate from each other] When buildings 110 and 120 vibrate in the width direction due to an earthquake, the engaged members 56 and 58, which were positioned in the engagement position, separate from the engagement portion 34 and become disengaged due to the vibration of buildings 110 and 120 in the width direction.

[0050] Then, as shown in Figure 6(B), when the building 110 and the building 120 move apart in the width direction, the support plate 40 moves in the width direction so as to move apart from the floor 10, the gap in the width direction between the floor 10 and the independent plate 30 widens, and the gap in the width direction between the floor 20 and the independent plate 30 widens. In this state, the protrusion 36 formed on the independent plate 30 contacts one edge in the width direction of the through hole 42 formed on the support plate 40. In this way, the limiting portion 50 limits the range of movement of the independent plate 30 relative to the support plate 40. In this state, as an example in this embodiment, the gap L5 between the independent plate 30 and the floor 10 is 20 [mm], and the gap L6 between the independent plate 30 and the floor 20 is 20 [mm].

[0051] [When building 110 moves to the rear in the depth direction relative to building 120] When buildings 110 and 120 vibrate in the depth direction due to an earthquake, and building 110 moves to the rear in the depth direction relative to building 120, floor section 10 moves to the rear in the depth direction relative to the independent plate 30 and floor section 20, as shown in Figure 7(A).

[0052] Here, the limiting section 50 restricts the movement of the independent plate 30 in the depth direction relative to the floor section 20, so even if the building 120 vibrates in the depth direction, the relative position between the independent plate 30 and the floor section 20 does not change.

[0053] [When building 110 moves towards the front in the depth direction relative to building 120] When buildings 110 and 120 vibrate in the depth direction due to an earthquake, and building 110 moves toward the front in the depth direction relative to building 120, floor section 10 moves toward the front in the depth direction relative to the independent plate 30 and floor section 20, as shown in Figure 7(B).

[0054] Here, the limiting section 50 restricts the movement of the independent plate 30 in the depth direction relative to the floor section 20, so even if the building 120 vibrates in the depth direction, the relative position between the independent plate 30 and the floor section 20 does not change.

[0055] (summary) As explained above, in the E / joint 100, the floor section 20 is positioned along the same floor surface as the floor section 10. The independent plate 30, positioned between the floor section 10 and the floor section 20, is positioned along the floor surfaces of both the floor section 10 and the floor section 20. The support plate 40 is attached to the floor section 20 and supports the independent plate 30 from below. Furthermore, a limiting portion 50 is provided on the underside of the independent plate 30 to restrict the range of movement of the independent plate 30 relative to the support plate 40. As a result, even when using an independent plate 30 with a thick plate thickness to connect the floor section 10 and the floor section 20, the difference in height between the floor section 10 and the floor section 20 and the independent plate 30 can be reduced, and the range of movement of the independent plate 30 relative to the floor section 20 can be restricted.

[0056] Furthermore, in the E / joint 100, the limiting portion 50 is composed of a protruding portion 36 that protrudes from the lower surface of the independent plate 30 and a through hole 42 formed in the support plate 40 into which the protruding portion 36 is movably inserted. This improves the appearance compared to the case where the limiting portion is visible from the outside.

[0057] Furthermore, the E / joint 100 is provided with a restricting section 54 that restricts the relative positions of the floor section 10 and the independent plate 30, and the relative positions of the floor section 20 and the independent plate 30, during normal operation. During an earthquake that causes vibration in the width direction, the restriction by the restricting section 54 is released. As a result, the gap between the floor section 10 and the independent plate 30, and the gap between the floor section 20 and the independent plate 30, can be made to appear constant during normal operation, compared to the case where the independent plate can move during normal operation.

[0058] Furthermore, in the E / joint 100, as shown in Figures 8(A) and 8(B), by removing the engaged members 56 and 58 during normal operation, dust and other debris in the gap between the floor 10 and the independent plate 30, and dust and other debris in the gap between the floor 20 and the independent plate 30, can be swept out from the end of the independent plate 30.

[0059] Although this disclosure has described in detail a particular embodiment, it will be apparent to those skilled in the art that this disclosure is not limited to such embodiments, and that various other embodiments are possible within the scope of this disclosure. In the above embodiment, the floor portion 10, floor portion 20, independent plate 30, and support plate 40 were made of wood, but they may be made of metal, for example.

[0060] Furthermore, although there was one independent plate in the above embodiment, there may be multiple independent plates. For example, there may be three independent plates, as in the modified form of the E / joint 200 shown in Figures 9(A) and 9(B). In this E / joint 200, when a pair of buildings move closer together in the width direction during an earthquake, each part moves as shown in Figures 10(A) and 10(B). On the other hand, when a pair of buildings move further apart in the width direction during an earthquake, each part moves as shown in Figures 11(A) and 11(B). Moreover, as shown in Figures 12(A) and 12(B), by removing the engaged members 256, 258, and 260 during normal times, dust and other debris in the gaps between each member can be swept out from the ends of the independent plate 30.

[0061] Furthermore, in the above embodiment, the support plate 40 is attached to the floor portion 20, but it may also be attached to the floor portion 10.

[0062] Furthermore, in the above embodiment, the restriction by the restricting unit 54 was released during an earthquake that vibrated in the width direction, but the restriction by the restricting unit 54 may also be released during an earthquake that vibrated in the depth direction. [Explanation of Symbols]

[0063] 10. Floor section (an example of the first floor section) 20. Floor area (an example of a second floor area) 30 independent board 36 Protrusion 40. Support plate (an example of a support part) 42 Through-hole (an example of an insertion part) 50 Restriction section 54 Regulatory Department 56 Engaged member 58 Engaged member 100 E / Joint (Floor Expansion Joint) 110. Building (an example of one type of building) 120. Building (an example of the other type of building)

Claims

1. An expansion joint for floors used between a pair of adjacent buildings, The first floor section is located in one of the buildings, A second floor is provided in the other building, separated from the first floor, and arranged along the same floor surface as the first floor, An independent plate is positioned between the first floor section and the second floor section, and is arranged along the floor surface, A support portion attached to the first floor portion or the second floor portion, which supports the independent plate from below so that the independent plate can move along the floor surface, A limiting portion is provided on the lower surface of the independent plate to limit the range of movement of the independent plate relative to the support portion, Floor expansion joint equipped with [feature].

2. The limiting portion is configured to include a protruding portion that protrudes from the lower surface of the independent plate and an insertion portion formed in the support portion into which the protruding portion is movably inserted. Floor expansion joint according to claim 1.

3. Under normal conditions, a regulating section is provided to regulate the relative position between the first floor section and the independent plate, and the relative position between the second floor section and the independent plate. In the event of an earthquake, the restrictions imposed by the aforementioned regulatory body will be lifted. Floor expansion joint according to claim 1 or 2.

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