JP3682014B2 - Expansion joint - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an expansion joint that covers a gap in a housing.
[0002]
[Prior art]
As an expansion joint for covering the gap between the casings, one disclosed in Japanese Patent Application Laid-Open No. 2000-328664 is known. As shown in FIGS. 9A and 9B, the expansion joint 50 disclosed in this publication has a joint part 51 of one of the left and right buildings 52 </ b> A and 52 </ b> B built via the joint part 51. The joint plate support fitting 54 attached to the support recess 53 formed on the floor surface on the side, the recess 55 formed on the floor surface on the joint portion 51 side of the other building 52B, and fixed to the recess 55 A fixing bracket 57 having an inclined guide surface 56 on the ground side, and one end rotatably attached to the joint plate support bracket 54, and the other end covering a portion excluding the guide surface 56 of the fixing bracket 57. The attached joint plate 58 and the other end portion of the joint plate 58 are fixedly attached to the joint plate 58 so as to be rotatable at the lower side portion, and elastic such as rubber covering the guide surface 56 of the fixing bracket 57. This expansion joint 50 pushes the joint plate 58 upward as shown in FIG. 10 when the joint portions 51 of the left and right buildings 52A and 52B become narrow due to an earthquake or the like. And was able to absorb the shaking.
[0003]
[Problems to be solved by the invention]
However, in the expansion joint 50 described above, since the guide surface 56 of the fixing bracket 57 and the protector 59 at the tip of the joint plate 58 are close to each other, if the joint portion 51 is narrowed even a little, the protector 59 becomes the guide surface. The joint plate 58 is pushed up on the floor surface. Accordingly, the joint plate 58 moves greatly up and down even with a small shake, and there are problems such as damage to the joint plate 58 and danger to surrounding people.
[0004]
In addition, the gaps in the frame provided to absorb the movement of buildings due to the recent rise in height and seismic isolation of buildings tend to widen. For this reason, a large movable amount is required for the expansion joint, and it is necessary to further enlarge the joint plate itself. On the other hand, in order to keep the appearance beautiful, finishing materials such as stones and tiles are attached to the surface of the joint plate, and the weight of the expansion joint tends to increase further from this point.
However, when the expansion joint 50 is viewed, the entire joint plate 58 is supported by the roller 60. Therefore, when the weight of the expansion joint is increased, an excessive load is applied to the roller 60, which may be unbearable.
[0005]
In view of the above problems, the present invention provides an expansion joint that can sufficiently withstand the weight of the joint plate as a whole, and that prevents the cover material (joint plate) from operating greatly with small shaking. It is a thing to do.
[0006]
[Means for Solving the Problems]
  The present inventionThe first configuration ofThe cover material covering the body gap, the upper surface of one housing is recessed, the housing portion where the housing material side end of the cover material is placed, and the cover material can be moved at least in the body gap depth direction on the other housing An expansion joint comprising: a connecting member that connects to the cover member; and a support member that is provided on the back surface of the cover material and has an inclined surface portion on the side facing the storage portionIn this case, the support member is an expansion joint provided on the back surface of the cover member at the center of gravity of the cover member or at the connecting member side position thereof.
[0007]
In the expansion joint having the above-described configuration, the storage member side end of the cover material is normally placed in the storage portion, the support member is positioned in the housing gap, and the upper surface of the housing and the upper surface of the cover material are substantially surface. In this case, when the housing gap is narrowed, the inclined surface portion of the support member abuts on the housing gap side edge of the storage portion, and the support member is moved along the inclined surface portion. At the same time, the cover material also sits on the upper surface of the housing to absorb the variation of the housing.
[0008]
  Also,When the support member is placed on the upper surface of the storage section, the center of gravity of the cover material is positioned on the end section side of the storage section. Therefore, the cover material is placed on the upper surface of the housing without rising the end section side of the storage section. It is possible to ensure that it rises, and the safety near the expansion joint can be further ensured.
[0009]
  The second configuration of the present invention includes a cover material that covers the housing gap, a housing portion in which the upper surface of one housing is recessed, and the housing portion side end portion of the cover material is placed, and the cover material is the other housing. An expansion joint comprising: a connecting member that is movably connected to at least the housing gap depth direction; and a support member that is provided on the back surface of the cover material and has an inclined surface portion on the side facing the storage portion,The distance in the frame gap width direction from the storage unit side end of the back surface of the cover material to the rear end top end of the storage unit, and the frame gap width direction from the frame gap side end of the storage unit to the starting point of the inclined surface of the support member Longer than the distance inExpansion joint.
  By setting in this way, when the housing gap becomes narrow, the inclined surface portion of the support member becomes the housing gap side edge of the storage portion before the storage portion side end portion of the cover material abuts the back end portion of the storage portion. Therefore, the support member can make all the triggers for the cover material to be placed on the upper surface of the housing, and the storage material side end of the cover material can be more reliably prevented from rising.
  In the present invention, the “back end portion of the storage portion” refers to the back end portion viewed from the housing gap, that is, the opposite end portion of the housing gap.
[0010]
  Also,In the second configuration,While setting the back end surface of the storage portion as an inclined surface, the angle of the inclined surface portion of the support member with respect to the upper surface of the cover material is set to be larger than the inclination angle of the back end surface of the storage portion with respect to the upper surface of the cover materialConfigurationIt is preferable to do this.
  By setting the angle of the inclined surface portion of the support member in this way, when the entire cover material is lifted along the inclined surface portion of the support member, the cover portion side end portion of the cover material is further in contact with the storage portion rear end surface. It can prevent reliably, and it can eliminate more reliably that the storage part side edge part side of a cover material rises.
[0011]
Moreover, it is preferable to set the angle with respect to the cover material upper surface of the inclined surface part of a supporting member to 45 degrees or less, especially 30 degrees-45 degrees. If formed in this way, the entire cover material can be gradually pushed up and can be moved more smoothly, so damage can be reduced, and of course, the tilt when the cover material is lifted can be more reliably eliminated. Can do.
[0012]
In the expansion joint having the above-described configuration, a gap is provided between the back end surface of the storage portion and the storage portion side end portion of the cover material, and on the other hand, from the storage portion side end portion of the top surface of the cover material It is preferable that a covering surface portion is provided so as to cover the gap with the covering surface portion.
By providing the gap in this way, if the swinging is small, the cover material can absorb the fluctuation of the casing simply by sliding (sliding) on the bottom surface of the housing in the casing gap width direction. It does not move greatly in the depth direction, and damage to the cover material can be reduced, and at the same time safety can be improved. Moreover, it can also walk safely by covering the said space | gap with a coating | coated surface part.
[0013]
In the expansion joint having the above-described configuration, the support member may be formed to have a substantially triangular cross section with the end point portion of the inclined surface portion serving as a fulcrum, or may be connected to the end point portion of the inclined surface portion and be a flat sliding bottom surface. It can also form so that it may have the structure formed by forming.
If the support member has a flat sliding bottom surface connected to the end point of the inclined surface portion, the entire weight of the expansion joint can be received by the entire sliding bottom surface, so that the weight of the expansion joint can be accommodated. Can do. In addition, the inclination of the cover material can be prevented more reliably by increasing the area of the sliding bottom surface.
[0014]
Further, it is preferable that the support member is installed so as to form a placement piece in a manner connected to the starting point of the inclined surface portion, and to place the placement piece on the edge portion on the housing gap side of the storage portion. If it installs in this way, the contact with the inclined surface part of a supporting member and the housing gap side edge part of a storage part can be made smoother. This means that the operation of the entire expansion joint is made smoother, and damage to the expansion joint can be reduced and safety can be improved at the same time.
[0015]
In the present invention, the “body gap width direction” means a direction in which adjacent enclosures approach and separate from each other, and the “body gap depth direction” refers to a case where the enclosure gap is viewed from the outside of the expansion joint. Meaning of the depth of the housing gap and the front direction, and “longitudinal direction of the housing gap” means the direction perpendicular to both the width direction of the housing gap and the depth direction of the housing gap, and the length direction of the housing gap. Means the direction that matches.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of an expansion joint according to the present invention will be described with reference to the drawings.
[0017]
First, a first embodiment of the expansion joint of the present invention will be described.
FIG. 1 is a cross-sectional view of an expansion joint according to a first embodiment of the present invention, showing a cross-sectional view in the width direction of the housing, and FIG. 2 is a perspective view showing a configuration of a cover material main body constituting the expansion joint. 3 (a) is an enlarged sectional view in the vicinity of the height adjusting bolt, FIG. 3 (b) is an enlarged sectional view in the vicinity of the stopper, FIG. 4 is a schematic perspective view of an example of the supporting member, and FIG. (C) is a schematic cross-sectional view showing an example of an operation state of the expansion joint when the gap is narrowed or widened.
[0018]
The expansion joint 1 is an expansion joint that connects the upper surfaces (floor surfaces) 2Aa and 2Ba of the housings 2A and 2B, and covers the gap 3 between the housings 2A and 2B. As shown in FIG. The cover material 4 covering the gap 3 of 2B and the gap 3 side of the upper surface 2Aa of the housing 2A are recessed, and the housing portion side end of the cover material 4 on the housing 2A side (hereinafter referred to as “tip portion”). And the side end (hereinafter referred to as “base end”) of the cover member 4 on the side of the casing 2B in the casing gap depth direction (vertical direction in FIG. 1) along with the movement of the cover member 4. A connecting member 6 movably connected to the housing 2 </ b> B and a support member 7 provided on the back surface of the cover member 4 are provided as main components.
[0019]
The storage portion 5 is recessed along the edge of the upper surface 2Aa of the housing 2A on the gap 3 side, a plate material 5b is laid on the concave bottom surface 5a, and the tip of the cover material 4 is placed on the concave bottom surface 5a. It can be slidably stored. The depth of the storage portion 5 is the same as the thickness of the cover material 4 so that the upper surface 4a of the cover material 4 is substantially flush with the upper surface 2Aa of the housing 2A and the upper surface 2Ba of the housing 2B. Further, the back end surface 5c of the storage portion 5 (the surface standing at the end opposite to the gap 3 in the storage portion 5) is formed as an upward slope (back end surface 5c) continuous from the concave bottom surface 5a to the top surface 2Aa of the housing 2A. It is.
Note that the length of the housing 5 in the longitudinal direction of the housing gap (the front and back direction in FIG. 1) matches the length of the cover material 4 in the longitudinal direction of the housing gap, or the length of the cover material 4 extends in the longitudinal direction of the housing gap. The cover member 4 is formed longer than the cover member 4 so as to be slidable, and the length of the housing 5 in the width direction of the housing gap (left and right in FIG. 1) is 1/3 to 2/3 of the cover member 4. Is preferable.
[0020]
As shown in FIGS. 1 and 2, the cover material 4 is injected with a filler 9 such as concrete or mortar into the inside of a substantially rectangular box-shaped cover material body 8 having a concave shape inside, and the surface is made of tile or stone. A top surface material 10 such as the upper surface 4a is pasted, and the front end portion of the cover material body 8 is formed as an inclined surface 4b along the back end surface 5c of the storage portion 5, and from the upper end portion of the inclined surface 4b to the housing gap width direction. The covering surface portion 11 is formed by extending the upper surface 4a so as to protrude.
[0021]
The cover member 4 has a base end portion connected to the housing 2B through the connecting member 6 so as to be movable in the depth direction of the housing gap, and a distal end portion thereof slidably mounted on the concave bottom surface 5a of the storage portion 5. At the same time, a gap 12 is provided between the back end surface 5c of the storage portion 5 and the inclined surface 4b of the cover member 4, and the tip of the covering surface portion 11 is mounted on the upper surface 2Aa of the housing 2A so as to cover the gap 12 It is.
[0022]
As shown in FIGS. 3A and 3B, the connecting member 6 includes a bracket 13, a frame material 14, and a stopper 15.
[0023]
The bracket 13 has a substantially L-shaped cross section including an installation surface 13a and a connection surface 13b, and the connection surface 13b is provided with a hole 13c through which a rod-shaped stopper 15 passes.
The bracket 13 has an installation surface 13a fixed to the gap side surface 2Bb of the housing 2B, and a connection surface 13b protruding into the gap 3.
[0024]
As shown in FIG. 3A, the frame member 14 has a long groove portion 14a along the base side edge of the cover material body 8 and a bottom surface 14b of the groove portion 14a extending to the cover material body 8 side. And a support surface 14c.
The frame material 14 abuts the support surface 14c on the bottom surface of the base end side end of the cover material body 8 and is fixed to the cover material body 8 by screwing, while being appropriately spaced in the length direction on the bottom surface 14b of the groove 14a. Then, a reinforcing plate 16 having a substantially L-shaped cross section is fixed, a screw hole 16a penetrating the bottom surface 14b and the reinforcing plate 16 is drilled at a substantially center of the reinforcing plate 16, and a height adjusting bolt 17 is screwed into the screw hole 16a. When the tip of the height adjustment bolt 17 is brought into contact with the connecting surface 13b of the bracket 13 and the height adjustment bolt 17 is turned in the tightening direction, the base end portion of the cover member 4 is lifted. The base end of the cover member 4 is lowered when the cover member 4 is turned in the loosening direction, so that the level of the cover member 4 can be adjusted.
[0025]
As shown in FIG. 3 (b), the stopper 15 has a long-axis bolt shape with a large-diameter head portion 15 a, and the shaft portion is inserted into a hole 13 c provided in the connecting surface 13 b of the bracket 13, and a nut 18a is fastened. At this time, it is preferable to determine the fixing position of the nut 18a in consideration of the stroke amount of the cover member 4 in the depth direction of the housing gap. The shaft portion of the stopper 15 is further inserted into a hole 14d provided in the bottom surface 14b of the frame material 14, and a nut 18b is fastened on the bottom surface 14b of the frame material 14 in the shaft portion to connect the cover material 4 and the housing 2B. It is connected so as to be movable in the depth direction of the housing gap (vertical direction in the figure).
By disposing the stopper 15 in this way, even if the cover material 4 is lifted in the depth direction of the gap between the heads, the head portion 15a hits the connecting surface 13b of the bracket 13 and is not lifted any further and does not fall off. Further, in normal times, the nut 18a also supports the load of the cover material 4, and the cover material 4 can be stabilized.
In this embodiment, the connecting member is configured to be movable only in the depth direction of the housing gap. However, the connecting member can be further rotated in the longitudinal direction of the housing gap or can be configured to be movable in any direction. Such vibrations can be handled.
[0026]
As shown in FIG. 4, the support member 7 is a continuous body that is formed in a substantially triangular cross section and extends in the longitudinal direction of the housing gap, and includes an upper surface 7 a along the rear surface 4 c of the cover material 4, and an upper surface 7 a A hanging surface 7b that hangs from one end, an inclined surface portion 19 that is inclined upward toward the housing 2A, and an upper end portion of the inclined surface portion 19, that is, a starting point portion of the inclined surface portion (upper end portion in the figure). A mounting piece 7c formed by extending an upper surface 7a outside 19A is provided. The height of the support member 7, that is, the length of the hanging surface 7 b is set to be slightly larger than the depth of the storage portion 5, and when the support member 7 is placed on the concave bottom surface 5 a of the storage portion 5, the cover material 4 is 2A is placed on the upper surface 2Aa.
[0027]
The support member 7 is connected to the center of gravity G point of the cover member 4 or the position of the center of gravity G of the end point part (lower end part in the figure) 19B of the fulcrum part 7d, that is, the lower end part 19B in the figure. It is attached at the position close to the member 6 side, that is, the base end side. Further, when the mounting piece 7c is placed on the concave bottom surface 5a of the storage portion 5 and the housing gap 3 is narrowed, the edge portion 2Ac of the housing 2A and the inclined surface portion 19 are in smooth contact with each other.
[0028]
In the above configuration, when the cover material 4 is attached, as shown in FIG. 1, the width direction of the housing gap from the front end portion of the back surface 4 c of the cover material 4 to the top end portion of the back end surface 5 c of the storage portion 5 (see FIG. 1). The distance L1 in the horizontal direction is longer than the distance L2 in the frame gap width direction from the gap side edge 2Ac of the storage portion 5 to the start point (upper end portion in the drawing) of the inclined surface portion 19 of the support member 7. It is preferable to set. By attaching the cover material 4 in this way, the inclined surface portion 19 of the support member 7 and the edge portion 2Ac of the storage portion 5 are brought into contact with each other before the inclined surface 4b of the cover material 4 and the back end surface 5c of the storage portion 5 abut. Since it can contact, it can prevent that the front-end | tip part of the cover material 4 rises and protrudes by contact | abutting with the inclined surface 4b and the back end surface 5c.
[0029]
In that case, the angle θ2 of the inclined surface portion 19 of the support member 7 with respect to the cover material upper surface 4a (in other words, the angle with respect to the housing gap width direction (horizontal direction in the drawing)) θ2 is set to the cover material upper surface 4a of the rear end surface 5c of the storage portion 5. If the angle θ1 is set to be larger than the angle θ1, the inclined surface portion 19 of the support member 7 is in contact with the edge portion 2Ac of the housing 2Aa (also the gap side edge portion of the storage portion 5) and along the inclined surface portion 19. Even in the process of lifting the cover material 4, the inclined surface 4b at the front end of the cover material 4 and the back end surface 5c of the storage portion 5 do not come into contact with each other, so that the contact cover material 4 is brought into contact with the inclined surface 4b and the back end surface 5c. It is possible to more reliably prevent the tip portion of the protrusion from rising and protruding.
Further, if the angle θ2 of the inclined surface portion 19 with respect to the cover material upper surface 4a of the support member 7 is set to 45 ° or less, particularly 30 ° to 45 °, the support member 7 is gradually pushed up along the inclined surface portion 19. Since the cover material 4 does not fluctuate rapidly, the damage to each member is naturally reduced, but the cover material 4 can be prevented from being tilted by the sudden fluctuation.
[0030]
Next, the operation of the expansion joint 1 will be described.
[0031]
FIG. 5A shows the expansion joint 1 in a normal state.
At this time, the support member 7 is located in the gap 3, the upper surface 4a of the cover material 4 is substantially flush with the upper surface 2Aa of the housing 2A and the upper surface 2Ba of the housing 2B, and the upper surfaces 2Aa and 2Ba of the housings 2A and 2B and the cover material. A person or the like can walk on the upper surface 4a of 4. Since the space | gap 12 is coat | covered with the coating | coated surface part 11, the space | gap 12 is not exposed on the surface but can walk safely.
[0032]
Further, when a small shaking in the width direction of the housing gap occurs, the supporting member 7 is placed along the inclined surface portion 19 as long as the inclined surface portion 19 of the supporting member 7 does not contact the edge 2Ac of the housing 2A. There is no, and the cover material 4 does not move in the frame gap depth direction. Therefore, if the shaking is small in the frame gap width direction, the cover material 4 does not operate in the frame gap depth direction (in this example, the vertical direction), so that the safety of the surroundings can be ensured.
[0033]
FIG. 5B shows the operation of the expansion joint 1 when the gap 3 between the enclosures 2A and 2B becomes narrow in the enclosure gap width direction due to an earthquake or the like.
When the gap 3 between the housings 2A and 2B becomes narrower in the housing gap width direction, the inclined surface portion 19 of the support member 7 comes into contact with the edge 2Ac of the housing 2A, and the support member 7 is guided by the inclined surface portion 19 and At the same time, the cover material 4 is placed on the upper surface 2Aa of the housing 2A to absorb the housing variation. At this time, the cover material 4 is pushed up from the vicinity of the center of gravity G by the support member 7, and the fulcrum 7 d at that time is located on the base end side with respect to the center of gravity G. The tip side does not rise due to the load, so it can be pushed up while maintaining level.
At this time, the entire weight of the cover material 4 is supported by the support member 7, but it can be said that a larger weight can be safely supported as compared with the case of supporting by the conventional roller.
[0034]
FIG. 5C shows the operation of the expansion joint 1 when the gap 3 between the enclosures 2A and 2B is expanded in the enclosure gap width direction due to an earthquake or the like. In this case, since the cover member 4 is connected to the housing B via the connecting member 6, it is pulled in the housing 2B direction and slides on the concave bottom surface 5a of the storage portion 5 to absorb the housing variation. .
[0035]
As shown in FIG. 6 (a), the support member 7 in the expansion joint 1 having the above-described configuration is obtained by dividing a continuous body extending in the longitudinal direction of the gap in the length direction into a support member 7A, which are appropriately spaced. In this case, the cover member 4 may be attached to the back surface of the cover member 4. By providing the support member 7 in a plurality, the weight can be reduced.
As shown in FIG. 6B, the support member 7 can also be configured so as to form a flat sliding bottom surface 7 e that continues to the end point portion 19 </ b> B of the inclined surface portion 19. By forming the sliding bottom surface 7e, it is possible not only to support the cover material 4 more stably horizontally, but also to add a durable product that will not be crushed even if the weight of the cover material 4 increases. it can.
The support member 7 is preferably an aluminum extruded shape, but may be formed by bending a metal plate. And if it forms from a solid material, durable product can also be raised further.
[0036]
The above has described the expansion joint as a floor surface that connects the floor surfaces of adjacent housings, but it is also possible to install an expansion joint as a wall surface that connects between the wall surfaces of the housings. Operate.
[0037]
Next, an expansion joint according to the second embodiment of the present invention will be described.
FIG. 7 is a cross-sectional view in the width direction between the casings showing an example of the expansion joint according to the second embodiment. FIGS. 8A to 8E are views of the expansion joint when the gap is narrowed. It is sectional drawing which showed the operation state.
[0038]
The expansion joint 31 is an expansion joint that connects the upper surfaces (floor surfaces) 32Aa and 32Ba of the housings 32A and 32B, and covers the gap 33 between the housings 32A and 32B. As shown in FIG. The cover member 34 covering the gap 33 of 32B and the gap 33 side of the upper surface 32Aa of the housing 32A are recessed, and the storage portion side end portion (hereinafter referred to as “tip portion”) of the cover member 34 on the housing 32A side is mounted. The housing portion 35 to be placed and the end portion (hereinafter referred to as “base end portion”) of the cover member 34 on the case 32B side are movable in the depth direction of the case gap (vertical direction in FIG. 7) along with the movement of the cover member 34. And a support member 37 provided on the back surface of the cover member 34 as main components.
[0039]
The storage portion 35 is recessed along the edge of the housing 32A on the side of the upper surface 32Aa gap 33, a plate material 38 is laid on the recessed bottom surface 35a, and the tip of the cover material 34 is placed on the concave bottom surface 35a and slid. It can be stored movably. The depth of the storage part 35 is set to a depth equivalent to the thickness of the cover member 34, and the upper surface 34a of the cover member 34 is substantially flush with the upper surface 32Aa of the housing 32A and the upper surface 32Ba of the housing 32B. Further, the rear end surface 35b of the storage portion 35 (the surface standing at the end opposite to the gap 33 in the storage portion 35) is formed perpendicular to the upper surface 32Aa of the housing 32A from the concave bottom surface 35a, and the upper end portion thereof is The cover member 34 is inclined so that it can be easily placed.
The length of the housing part 35 in the longitudinal direction of the housing gap (the front and back direction in FIG. 7) is adjusted to the length of the cover material 34 in the longitudinal direction of the housing gap, or the length of the cover material 34 is in the longitudinal direction of the housing gap. The cover member 34 is formed longer than the cover member 34 so as to be slidable, and the length of the housing portion 35 in the housing gap width direction (left-right direction in FIG. 7) is 1/3 to 2/3 of the cover member 34. Is preferable.
[0040]
In this plate member 38, the concave bottom surface covering portion 38a is extended to the housing gap 33, the tip portion thereof is inclined downward toward the housing 32B to form a guide piece 38b, and the base end portion is erected to cover the back end surface 35b. It is formed. On the side of the housing 32B, there is a guide piece 38b that protrudes from the depth side surface 32Ab of the housing 32A and is inclined downward toward the housing 32B.
[0041]
As shown in FIG. 7, the cover material 34 is filled with a filler 40 such as concrete or mortar into a substantially rectangular box-shaped cover material body 39 having a concave shape inside, and the surface is made of tile, stone, or the like. The surface material 41 is pasted to form an upper surface 34 a, and the front end portion of the cover material main body 39 is a front end portion surface 34 b that is aligned with the back end surface 35 b of the storage portion 35.
The cover member 34 is connected to the housing 32B through a connecting member 36 so as to be movable in the depth direction of the housing gap, and has a distal end portion slidably mounted on the concave bottom surface 35a of the storage portion 35. At the same time, the back end surface 35b of the storage portion 35 and the tip end surface 34b of the cover member 34 are attached so as to contact each other.
[0042]
The connecting member 36 includes a support concave portion 42, a support convex portion 43, a holding member 44, and a connecting rod 45.
The support recess 42 is formed by recessing the upper surface 32Ba of the housing 32B along the edge so that the base end portion of the cover member 34 can be accommodated. Further, the length of the support recess 42 in the longitudinal direction of the housing gap (the front and back direction in FIG. 7) matches the length of the cover material 34 in the longitudinal direction of the housing gap, or the length of the cover material 34 extends in the longitudinal direction of the housing gap. The cover member 34 is formed to be longer than the cover member 34 so as to be slidable.
[0043]
The support convex portion 43 has a substantially square cross section, is located on the base end side portion of the back surface 34c of the cover material 34, and protrudes downward in the depth direction. ) Has a length substantially equal to the length of the cover material 34. The support convex portion 43 is normally placed on the bottom surface 42 a of the support concave portion 42 and supports the cover material 34.
[0044]
The holding member 44 is laid so as to cover the bottom surface 42 a and the side surface 42 b of the storage recess 42, bends upward in the depth along the gap side surface 32 Bb of the housing 32 B from the edge of the support recess 42, and further on the back surface 34 c of the cover member 34. It is bent along. The support surface 44a that protrudes toward the housing 32A is formed with connection holes 44b that are formed at predetermined intervals in the longitudinal direction of the gap.
The connecting hole 44b is arranged in the longitudinal direction of the gap on the back surface 34c on the base end side of the cover member 34, and a bar-like connecting rod 45 provided so as to be inserted through the connecting hole 43b is inserted therethrough. The holding member 44 supports the cover member 34 in the normal state and is connected to the connecting rod 45 at the time of operation. Therefore, the cover member 34 is prevented from falling off, and the cover member 34 is restricted from moving in the depth direction of the housing gap. doing.
[0045]
The support member 37 is a continuous body extending in the longitudinal direction of the housing gap formed by bending a metal plate material, and is perpendicular to the upper surface 37a along the rear surface 34c of the cover material 34 and one end of the upper surface 37a. And a bottom surface 37c that is flat toward the housing 32A, and an inclined surface portion 46 that is inclined upward from the bottom surface 37c. The height of the support member 37, that is, the length of the hanging surface 37 b is set to be greater than the depth of the storage portion 35, and when the support member 37 is placed on the concave bottom surface 35 a of the storage portion 35, the cover material 34 is the top surface of the housing 32 </ b> A. It is supposed to be placed on 32Aa.
The support member 37 has a fulcrum portion 37d, that is, the end portion of the inclined surface portion 46 (the lower end portion in the figure) in the housing gap width direction, the position of the center of gravity of the cover member 34 and the connecting member 36 side of the center of gravity. It is attached to support the position from the base end side.
[0046]
FIGS. 8A to 8E show the movement of the expansion joint 31 when the gap 33 between both the casings 32A and 32B is narrowed in the casing gap width direction.
[0047]
First, as shown in FIGS. 8A and 8B, the expansion joint 31 has a gap 33 that varies because the distal end surface 34 b of the cover member 34 is in contact with the rear end surface 35 b of the storage portion 35 even at normal times. In this case, the tip end surface 34b rises on the back end surface 35b of the storage portion 35, and the cover member 34 rises.
[0048]
At this time, the cover member 34 is inclined, and the tip end surface 34b protrudes from the housing upper surface 32Aa. However, as shown in FIG. Since it will be mounted on 35a, it can be made to recover in a horizontal state. Further, since the guide piece 38b inclined downward from the plate member 38 laid in the storage portion 35 toward the housing 32B is provided, the guide piece 38b is easily placed on the concave bottom surface 35a of the storage portion 35. By adjusting the angle of the downward inclination and the angle of the inclined surface portion 46 of the support member 37, it can be mounted smoothly.
When the housing gap 33 is further narrowed, the bottom surface 37c of the support member 37 slides (slides) on the concave bottom surface 35a of the storage portion 35 as shown in FIGS. 8 (d) and 8 (e). It moves. At this time, the weight of the expansion joint 31 is applied to the support member 37. However, since the area of the bottom surface 37c is widened and the load is dispersed, the weight of the large cover member 34 can be endured.
[0049]
Further, when the gap 33 between the housings 32A and 32B widens in the housing gap width direction, the cover member 34 and the housing 32B are connected by the connecting member 36, so the cover material 34 is pulled together with the housing 32B. The tip end side of the back surface 34 c of the cover material is pulled while sliding on the concave bottom surface 35 a of the storage portion 35. At this time, since the connecting rod 45 is inserted into the connecting hole 44b of the support surface 44a of the holding member 44, it does not fall off.
[0050]
When the space for installation is limited and a gap cannot be created, the support member 37 is provided as described above, and the expansion joint 31 that keeps the level immediately even if the storage portion end portion of the cover member 34 protrudes is formed. It is possible to suppress the rise of the storage portion side end and improve safety. Further, if the area of the bottom surface 37a of the support member 37 is wide, it can be stably held even if the weight of the expansion joint 31 increases.
[0051]
The present invention is not limited to the above-described embodiment, and can be installed not only in the gap between the floor surfaces but also in the gap in the building such as between the wall surfaces. Alternatively, it may be movable in the longitudinal direction, or may be rotatable, and can be used regardless of the installation location by being adapted to the movement of the cover material.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a first embodiment of the present invention in the width direction of a housing gap.
FIG. 2 is a perspective view of the cover material main body according to the first embodiment of the present invention cut along the frame gap width direction.
FIG. 3A is an enlarged cross-sectional view near the height adjusting bolt of the first embodiment of the present invention, and FIG. 3B is an enlarged cross-sectional view near the stopper of the first embodiment of the present invention.
FIG. 4 is a schematic perspective view of an embodiment of the support member of the present invention.
FIGS. 5A and 5B are schematic cross-sectional views showing an operation state of the first embodiment of the present invention when the gap is narrowed and FIG. 5C is a diagram when the gap is widened. .
6A and 6B are schematic cross-sectional views of an embodiment of the support member of the present invention.
FIG. 7 is a cross-sectional view in the width direction between the frames of the second embodiment of the present invention.
FIGS. 8A to 8E are cross-sectional views showing the operating state of the second embodiment of the present invention when the gap is narrowed.
9A is a schematic sectional view of a conventional example, and FIG. 9B is a schematic plan view of the conventional example.
FIG. 10 is an operation explanatory diagram when the joint portion of the conventional embodiment becomes narrow.
[Explanation of symbols]
1 Expansion joint
2A, 2B enclosure
2Aa, 2Ba Upper surface
2Ab, 2Bb Gap side
2Ac edge
3 gap
4 Cover material
4a Top surface
4b Inclined surface
4c Back side
5 storing section
5a Concave bottom
5b Board material
5c Back end face
6 Connecting members
7 Support members
7a Top surface
7b Bottom surface
7c Placement piece
7d fulcrum
7e Bottom
8 Cover material
9 Filler
10 Surface material
11 Covered surface
12 gap
13 Bracket
13a Installation surface
13b Connecting surface
13c hole
14 Frame material
14a end
14b Bottom
14c Support surface
14d hole
15 Stopper
15a head
16 Reinforcing plate
16a Screw hole
17 Height adjustment bolt
18a, b nut
19 Inclined surface
31 expansion joint
32A, 32B enclosure
32Aa, 32Ba Upper surface
32Ab, 32Bb Gap side
33 gap
34 Cover material
34a upper surface
34b Tip surface
34c Bottom
35 compartment
35a Concave bottom
35b back end face
36 Connecting members
37 Support member
37a top view
37b Bottom surface
37c Bottom
37d fulcrum
38 board
38a Concave bottom cover
38b Guide piece
39 Cover material
40 Filler
41 Surface material
42 Support recess
42a Bottom
42b side view
43 Supporting convex part
44 Retaining material
44a Support surface
44b Connecting hole
45 connecting rod
46 Inclined surface
50 expansion joint
51 Joint
52A, 52B Building
53 Support recess
54 Joint plate support bracket
55 recess
56 Guide surface
57 Fixing bracket
58 Joint plate
59 Protective body
60 rollers

Claims (8)

The cover material that covers the housing gap, the upper surface of one housing is recessed, the housing portion on which the housing material side end is placed, and the cover material can be moved to the other housing at least in the depth direction of the housing gap An expansion joint provided with a connecting member connected to the support member and a support member provided on the back surface of the cover material and having an inclined surface portion on the side facing the storage portion ,
An expansion joint in which the support member is provided on the back surface of the cover material at the position of the center of gravity of the cover material or the position closer to the connecting member. The cover material that covers the housing gap, the upper surface of one housing is recessed, the housing portion on which the housing material side end is placed, and the cover material can be moved to the other housing at least in the depth direction of the housing gap An expansion joint comprising: a connecting member connected to the support member; and a support member provided on a back surface of the cover material and having an inclined surface portion on a side facing the storage portion,
The distance in the frame gap width direction from the storage unit side end of the back surface of the cover material to the top end of the storage unit, and the frame gap width direction from the frame gap side end of the storage unit to the sloped surface start point of the support member An expansion joint, characterized in that it is set longer than the distance at. While the back end surface of the storage portion is an inclined surface, the angle of the inclined surface portion of the support member with respect to the cover material upper surface is set to be larger than the inclination angle of the storage portion back end surface with respect to the cover material upper surface. The expansion joint according to claim 2 . The expansion joint according to any one of claims 1 to 3, wherein an angle of the inclined surface portion of the support member with respect to the upper surface of the cover material is set to 45 ° or less. While providing a gap between the rear end surface of the storage portion and the storage portion side end portion of the cover material, a covering surface portion protrudes from the storage portion side end portion of the upper surface of the cover material in the housing gap width direction, and the covering surface portion The expansion joint according to claim 1, wherein the expansion joint is covered. The expansion joint according to any one of claims 1 to 5, wherein the support member has a substantially triangular cross section with an end point of the inclined surface portion as a fulcrum. The expansion joint according to any one of claims 1 to 5, wherein the support member has a configuration in which a flat sliding bottom surface is formed continuously to the end point portion of the inclined surface portion. The support member forms a rest piece and lined to the beginning portion of the inclined surface, one of the claims 1 to 7, characterized in placing the rest piece onto the precursor gap side edge portion of the housing portion Expansion joint according to crab .

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