JP5037915B2 - Expansion joint - Google Patents

Description

  The present invention relates to an expansion joint that closes a gap between a first structure and a second structure that are opposed to each other at a corner by a cover material.

Conventionally, in an expansion joint that closes a gap between a first structure and a second structure that are opposed to each other at a corner by a cover material supported by a holder provided on the first structure side, By attaching to the first structure with the attachment part that projects to the front side from the gap, the cover material has an inverted L shape in which the horizontal part that covers the gap and the vertical part that covers the attachment part of the holder are connected. Are known. (For example, see Patent Document 1)
Japanese Utility Model Publication No. 63-36089

  However, the expansion joint having the above-described structure has a problem that the vertical appearance of the inverted L-shaped cover member protrudes forward along the first structure, so that the original appearance of the corner where the two structures meet is impaired. There was a point.

  The present invention solves the above-mentioned problems, and closes the gap between two opposing structures by forming a corner with a flat cover material, so that the corner where the two structures meet even if the cover material is present. It is an object of the present invention to provide an expansion joint that maintains its original appearance.

In order to solve the above-described problem, the invention according to claim 1 is a cover that is supported by a holder provided on the first structure side with a gap between the first structure and the second structure facing each other with a corner. In the expansion joint closed by the material, the cover material is a flat one extending so that one end is in contact with or close to the first structure and the other end is overlapped with a part of the second structure. Engagement ridges are provided close to the first structure, and the holder is joined to the receiving member fixed to the first structure on the side of the locking groove portion into which the engagement ridges of the cover material are fitted. By providing the mounting portion, it is possible to fit in the gap between the first structure and the second structure, and on the back side of the cover material, the engagement protrusion is provided in the holder in the vicinity of the engagement protrusion. When fitting into the locking groove, the contact with the mounting portion makes contact with the locking groove of the engaging ridge. Wherein the limiting protrusions for limiting Hamagodo is provided.

The invention according to claim 2 is characterized in that, in claim 1, the engaging protrusion provided on the back side of the cover material and the second structure are connected by a wire or the like.

According to a third aspect of the present invention, in the first or second aspect, an elongated hole for adjusting a joining position with the receiving member is formed in the attachment portion that the holder of the cover material has on the side of the locking groove portion. It is characterized by being.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the holding portion of the displacement absorber provided on the back side of the front end of the portion of the cover material that overlaps the second structure is formed in a tapered shape. It is characterized by.

  According to the first aspect of the present invention, when the engaging ridge provided on the back side of the flat cover material is engaged with the locking groove of the holder provided on the first structure side, the cover material has one end at the first end. Since it is in contact with or close to the structure and the other end is overlapped with a part of the second structure to close the gap, the original appearance that the second structure is abutted against the first structure is exhibited. In addition, the flat cover material can be manufactured with a simpler mold than the conventional inverted L-shaped cover material, and uses less material, so it is inexpensive and contributes to a reduction in the installation cost of the expansion joint. .

In addition , when the engaging ridge provided on the back side of the cover material is fitted into the locking groove provided on the holder, the limiting ridge provided on the back side of the cover material comes into contact with the mounting portion of the holder and engages. In order to limit the degree of fitting of the ridges, excessive fitting does not cause failure or damage.

According to the invention according to claim 2 , the cover material in which the engaging ridge is connected to the second structure with a wire or the like is held by the second structure even when the cover material is separated from the hand during mounting. Therefore, the cover material can be attached safely and easily, and the cover material can be prevented from falling even if the engaging ridge is detached from the locking groove after the cover material is attached.

According to the invention which concerns on Claim 3 , the long hole provided in the attachment part of the holder moves the screw joined to a receiving member within the range of length, and adjusts the position of a cover material, The operation of installing one end so as to be in close contact with the surface of the first structure can be performed easily and reliably.

According to the fourth aspect of the present invention, even if the displacement absorber enters the recess of the second structure due to shaking such as an earthquake, the displacement absorber will come out of the recess when the recess moves and pushes the tapered surface of the clamping portion. It is easy to return to the state of contacting the surface of the second structure.

  Embodiments of an expansion joint according to the present invention will be described below with reference to the drawings.

  In FIG. 1, symbol A indicates an expansion joint. This expansion joint A closes the gap 3 between the first structure 1 and the second structure 2 facing each other at a corner by a cover material 5 supported by a holder 4 provided on the first structure 1 side. The cover member 5 is flat so that one end is in contact with the first structure 1 and the other end extends so as to overlap a part of the second structure 2. Engagement ridges 6 are provided close to one structure 1, and the holder 4 of the cover material 5 is located on the side of the locking groove portion 7 into which the engagement ridges 6 of the cover material 5 are fitted. 1 is provided so as to fit in the gap 3 between the first structure 1 and the second structure 2.

  The first structure 1 and the second structure 2 that are opposed to each other at an entry corner are shown in FIG. 1 in which the first structure 1 is a wall and the second structure 2 is a ceiling. However, both the structures 1 and 2 include a case where they are a floor and a wall, a wall and a wall, or another building constructed adjacently.

  The cover member 5 that closes the gap 3 between the first structure 1 and the second structure 2 extends so that one end abuts on the first structure 1 and the other end overlaps a part of the second structure 2. A flat part, which is close to the first structure 1 on the back side, has an engaging protrusion 6 having a saw-tooth check pawl 10 and is in contact with the first structure 1 at both ends. It has a clamping part 12 of the displacement absorber 11 and a clamping part 14 of the displacement absorber 13 in contact with the second structure 2, and further, one clamping part 12 corresponds to the mounting part 9 of the holder 4, It is formed by extruding aluminum so as to have a restriction ridge 15 that restricts the degree of engagement of the engagement ridge 6 with the locking groove 7.

  The holder 4 of the cover member 5 provided on the first structure 1 side has an inverted U-shape and a locking groove portion having a plurality of serrated locking ridges 16 for engaging the check pawl 10 with one inner wall. 7 is formed by extrusion molding of aluminum so that a mounting portion 9 projecting toward the first structure 1 is continuously provided on one side of the body 7. The mounting portion 9 of the holder 4 is provided with a necessary number of long holes 17 in the width direction at intervals at which stable mounting is performed by post-processing.

  The receiving member 8 attached to the first structure 1 and supporting the attachment portion 9 of the holder 4 is preferably formed by extrusion molding of aluminum in an L-shaped cross section, but an L-shaped steel material may be used. The piece 8 a is fixed to the first structure 1 with a screw 18. Further, the attachment portion 9 of the holder 4 is attached to the lower side of the horizontal piece 8b, and the attachment portion 9 is moved to the horizontal piece 8b by tightening the screw 19 through the long hole 17 formed in the attachment portion 9 and tightening the horizontal piece 8b. Let them be joined.

  A wire 21 or the like that connects the engaging protrusion 6 provided on the back side of the cover material 5 and a member 20 such as a field edge provided on the second structure 2 side is fastened to a hole 22 formed at one end of the member 20. The other end is fastened to the hole 23 formed in the engaging protrusion 6 provided on the back side of the cover material 5 so that the cover material 5 is connected to the member 20 so that it does not fall off. It is possible to prevent the cover material 5 from falling off after the mounting.

  The expansion joint A having the above-described configuration attaches the vertical piece 8a of the receiving member 8 to the first structure 1 with a screw 18 in the gap 3 between the first structure 1 and the second structure 2 facing each other with a corner. If the attachment part 9 provided in the holder 4 is attached to the lower side of this horizontal piece 8b and it couple | bonds with the screw | thread 19, the holder 4 will be installed so that it may fit in the clearance gap 3. FIG. Therefore, when the engaging protrusion 6 provided on the back side of the cover material 5 is fitted into the engaging groove 7 provided in the holder 4, the check pawl 10 provided on the engaging protrusion 6 is provided in the engaging groove portion 7. The locking protrusions 16 are prevented from coming off by being engaged, and at this time, the limiting protrusion 15 provided on the back side of the cover material 5 hits the mounting portion 9 to stop the cover material 5. The material 5 abuts the displacement absorber 11 attached at one end to the first structure 1, and the other end overlaps the second structure 2 and the displacement absorber 13 attached at the tip to the second structure 2. Make contact. Therefore, the corner formed by the first structure 1 and the second structure 2 has an original appearance in which the second structure 2 abuts against the first structure 1, and the cover material 5 is used for an earthquake or ground. Even if sinking or the like occurs and the gap 3 is changed, the operation of closing the gap 3 is continued while absorbing the change.

  3 and 4 show a modification of a part of the above embodiment, and the deformed portion overlaps the mounting structure of the displacement absorber 11 attached to one end of the cover material 5 by the clamping portion 12 and the second structure 2. It is in the shape of the clamping part 14 which attaches the displacement absorber 13 to the other end. Accordingly, these modified parts will be described below, and the same parts as those of the above-described embodiment will be denoted by the same reference numerals and the description thereof will be omitted.

  As shown in FIG. 3, the displacement absorber 11 is mounted on the back side of one end of the cover member 5 adjacent to the first structure 1 by providing a holding portion 12 corresponding to the mounting portion 9 of the holder 4. In the embodiment shown in FIG. 1, the displacement absorber 11 that is brought into contact with the first structure 1 in the embodiment shown in FIG. 1 is sandwiched between the displacement absorber 11 and the horizontal piece 8 b of the receiving member 8 attached to the first structure 1. It is made to contact.

  The deformation of the clamping part 14 that clamps the displacement absorber 13 is such that the clamping part 14 that is parallel from the base to the tip in the embodiment shown in FIG. 1 is tapered from the base as shown in FIGS. The taper surface 14a is formed to cause a movement in the front-rear direction when a lateral force acts on both sides.

  The expansion joint A, which is partially deformed as described above, is provided with the displacement absorber 11 on the back side of one end of the cover material 5, so that when the engaging ridge 6 is fitted into the locking groove 7, this displacement Since the absorbent body 11 abuts against the horizontal piece 8b of the receiving member 8 and restricts the degree of fitting of the engaging ridge 6 into the locking groove 7, the fitting degree limiting ridge 15 provided in the embodiment of FIG. The same effect is obtained, and a small gap 24 is formed between the cover member 5 and the first structure 1 and is closed by the horizontal piece 8b of the receiving member 8. Moreover, since the clamping part 14 which is provided in the back side of the other end of the cover material 5 and clamps the displacement absorber 13 is formed in a tapered shape, the displacement absorber 13 is moved to the second structure 2 by a shake such as an earthquake. However, when the pressing force is applied to the taper surface 14a by the movement of the recess 25, the taper surface 14a converts this force into a forward / rearward movement force to disengage the displacement absorber 13 from the recess 25. It returns to the state which contact | abuts on the surface of the two structures 2. FIG.

  INDUSTRIAL APPLICABILITY The present invention is effective in preventing the cover material that closes the gap between the first structure and the second structure facing each other at the corner of entry from impairing the appearance of the corner.

Sectional drawing which shows embodiment of the expansion joint which concerns on this invention. Sectional drawing which expanded a part of the same as the above. Sectional drawing which shows the other deformation | transformation aspect of the expansion joint which concerns on this invention. (A) (b) is explanatory drawing which shows the state which one side of the displacement absorber provided in the cover material same as the above entered into the recessed part of the 2nd structure, and the state which removed.

A expansion joint 1 first structure 2 second structure 3 gap 4 holder 5 cover material 6 engaging protrusion 7 locking groove 8 receiving member

Claims (4)

In the expansion joint that closes the gap between the first structure and the second structure that are opposed to each other with a cover material supported by a holder provided on the first structure side,
The cover material is flat so that one end is in contact with or close to the first structure, and the other end extends so as to overlap a part of the second structure. A joint ridge is provided,
The holder has a first structure and a second structure by providing an attachment part to be joined to a receiving member fixed to the first structure on the side of the locking groove part to which the engagement protrusion of the cover material is fitted. as well as to fit into the gap between the things
On the back side of the cover material, when engaging the engaging ridge with the engaging groove provided in the holder in the vicinity of the engaging ridge, the engaging groove is engaged with the engaging groove. An expansion joint, characterized in that a restriction ridge is provided to limit the degree of fitting to the joint. Expansion joint according to claim 1, wherein the engaging protrusions that attached to the back side of the cover member, that are a second structure connected by a wire or the like. 3. The expansion according to claim 1 or 2 , wherein the cover material holder is formed with a long hole for adjusting a joining position with the receiving member in a mounting portion provided on a side of the locking groove portion. Joint. Holding portions of the displacement absorbing member provided on the distal end rear side of the portion overlapping the second structure of the cover material, in any one of claims 1 to 3, characterized in that it is formed in a tapered tapered The expansion joint described.

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