JPH0344885Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) This invention relates to an improvement of expansion joints used to close the walls of adjacent buildings at appropriate intervals. It is something.

(Prior Art) There are various types of expansion joints as described above, and one example of this is described in Japanese Utility Model Application Publication No. 168709/1983, and will be explained based on FIG. 4. do.

Reference numerals 100 and 101 in the figure are adjacent wall plates with a joint 102 in between, 103 is a holding piece that straddles the joint 102 and comes into contact with the back surfaces of both the wall plates 100 and 101, and 104 is a holding piece that straddles the joint 102 and comes into contact with the back side of both the wall plates 100 and 101. This is a cover plate that comes into contact with the surfaces of the wall plates 100 and 101. The holding piece 103 is provided with a screw rod 105 that protrudes toward the joint 102,
By connecting the tip of this threaded rod 105 and the inner surface of the cover plate 104 with a tension coil spring 106, the holding piece 103 and the cover plate 104 are pulled toward each other, and the wall plates 100 and 101 are sandwiched between them. . Further, the screw rod 105 is tiltably provided with a sliding guide piece 107 having a guide portion 107a that opens toward the cover plate 104 side. A linking arm 108 is slidably inserted in the front and back directions of the wall plates 100 and 101.

(Problem to be Solved by the Invention) However, the above-mentioned expansion joint has a structure in which the holding piece 103 and the cover plate 104 that are in contact with the front and back sides of the wall panels 100 and 101 are drawn together by a tension coil spring 106. Therefore, if the wall plates 100 and 101 are displaced so that they separate, or if excessive wind pressure is applied that lifts one side of the cover plate 104, the expansion joint itself will be damaged by the wall plate. 100,
There was a problem that there was a high risk of it coming off or falling off the 101.

(Purpose of the invention) This invention was created by focusing on the problems of the conventional methods as described above. The purpose of the present invention is to provide an expansion joint that can maintain its functionality and firmly hold a cover against external forces such as wind pressure.

[Structure of the invention] (Means for solving the problem) The expansion joint according to this invention is attached to an adjacent wall at an appropriate interval, with both ends rotatable or sliding in a state that cannot be removed. A fixing member to which an inter-wall occluding cover is fitted is connected to the held support member via a tension spring, and the fixing member is opposed to a surface on the rotation direction side of the support member. A restraining member including a receiving part and a restraining part facing each other at a distance within the elastic limit range of the tension spring on a surface of the supporting member opposite to the tension spring mounting side is arranged approximately in line with the axis of the tension spring. It is characterized by being rotatable around an axis in the same direction.

(Example) This invention will be explained below based on the drawings.

FIGS. 1 and 2 are diagrams illustrating an embodiment of this invention.

That is, this embodiment shows a case where an expansion joint 1 is provided between the upper ends of a pair of walls B and C facing each other with a gap A in between.

Draining fixtures 2 are fixed to the upper surfaces of both walls B and C by anchor plugs 3 at appropriate intervals, and hook-shaped locking portions are formed at both ends of each of the draining fixtures 2. By engaging locking claws 4a and 4b formed on the lower surface side of the drainer 4 with 2a and 2b,
Drainers 4, 4 are attached to each wall body B, C. The drains 4, 4 break the entire upper surface of each wall body B, C, form a gentle downward slope in opposite directions of both wall bodies B, C, and have an edge on the gap A side. It has a standing wall portion 4c. Further, a waterproof sheet 5 with sufficient slack in the gap A is provided between the upper ends of the walls B and C, and this waterproof sheet 5 is attached to each draining fixture 2 and the plurality of stops 6. It is installed with.

Reference numeral 7 in the figure is a support member, and this support member 7 is made of a plate material having a length dimension larger than the width dimension of the gap A, and has an engagement member with a head protruding from the upper surface at both ends. Compatible screws 8, 8 are screwed therein, and a screw insertion hole 7a is formed in the center, and a cylindrical spring case 9 concentric with the screw insertion hole 7a is fixed to the upper surface. When attaching the support member 7, an auxiliary member 10 having an engagement groove 10a having a substantially C-shaped cross section in the longitudinal direction of the walls B and C is provided on opposing surfaces of the compatible wall portions 4c and 4c. are fixed with screws 11 respectively, and both engaging grooves 1
The opening portions of 0a and 10a are placed in a state where they face each other. At this time, the width of the opening of the engagement groove 10a is larger than the thickness of the support member 7, and smaller than the thickness plus the protrusion of the engagement screw 8. Then, the end of the support member 7 and the head of the engagement screw 8 are fitted into each of the engagement grooves 10a, so that they cannot be removed from the opening. The support member 7 attached in this way is attached to both the auxiliary members 1
0 and 10, each end is freely rotatable within the engagement groove 10a,
Moreover, it is slidable along the engagement groove 10a.

The support member 7 is connected to a fixing member 14, into which the inter-wall closing cover 13 is fitted, via a tension spring 16 made of a tension coil spring.

The fixing member 14 has respective drainers 4,
The leg pieces 14a, 14a that contact the upper surface of 4 are connected in a bent state, and have a screw insertion hole 14b in the center, and hook portions 14c, 14c bent one step inward at the lower ends of each leg piece 14a, 14a. is formed. Further, the fixing member 14 is provided with a restraining member 15 that limits the amount of extension of the tension spring 16. The deterrent member 15 has a screw insertion hole 15 in the center.
A pair of receiving parts 15d and 15 are connected to a horizontal part 15b having a diameter of
The supporting member 7 is inserted into the hollow space of the rectangular frame.

To assemble the supporting member 7, fixing member 14, and restraining member 15, first, screw the screw 12 passed through the screw insertion hole 7a of the supporting member 7 into the lower end of the tension spring 16 inserted into the spring case 9. After the support member 7 is inserted into the inner space of the restraining member 15, the fixing member 14 is attached to the upper end of the tension spring 16.
and each screw insertion hole 14b, 15 of the restraining member 15.
Screw the screw 17 passed through a into the horizontal part 15 of the restraining member 15 between the fixing member 14 and the tension spring 16.
Hold b. As a result, the restraining member 15
is substantially rotatably connected to the fixed member 14 side, and can move together with the support member 7 relative to the fixed member 14. At this time,
The fixing member 14 is brought into pressure contact with each drainer 4 by the action of a tension spring 16. In addition, the restraining member 15
is the screw 1 coaxial with the axis of the tension spring 16.
The receiving portions 15d, 15d are rotatable around the support member 7, and are provided on both sides (lateral surfaces) in the rotation direction of the support member 7 when displacement occurs between the walls B and C.
are opposite to each other, and the surface of the support member 7 opposite to the tension spring mounting side, that is, the lower surface of the support member 7,
The restraining portion 15c faces each other with an appropriate interval within the elastic limit range of the tension spring 16. Note that the support member 7 and the fixing member 14 described above are provided at appropriate intervals similarly to the draining fixture 2 described above.

The cover 13 has leg pieces 13a, 13a at both ends.
are connected in a bent state to form a cross-sectional shape that covers the upper surface of the fixing member 14, and the leg pieces 13a, 1
A hook portion 13b bent inward at the lower end of 3a,
13b. And the cover 13
is attached by fitting the hook portions 13b, 13b into the hook portions 14c, 14c of the fixing member 14, and closes the gap A while spanning both walls B, C.

In the expansion joint 1 having the above configuration, even if a temporary or long-term displacement occurs between the two walls B and C, both ends of the support member 7 are connected to the respective engagement grooves 10a and 10a. Since the cover 13 is rotatable and slidable within the cover and cannot be removed, and the cover 13 is attached via the tension spring 16, it is possible to flexibly follow the above-mentioned displacement and continue to reliably close the gap A. At this time, the restraining member 15
is rotated by the support member 7 that moves due to the displacement of the walls B and C coming into contact with the receiving parts 15d and 15d,
There is no fear that the operation of the support member 7 will be hindered.
Furthermore, the tension spring 1 is
Since the position of the cover 6 is always maintained at the center of the gap A, the position of the cover 13 does not change significantly.

Furthermore, the above expansion joint 1
For example, cover 1 may be damaged by external force such as large wind pressure.
The restraining part 15 of the restraining member 15 moves together with the cover 13 when one side of the restraining member 3 is lifted up.
c comes into contact with the lower surface of the support member 7, and the cover 1
3 is prevented from lifting any further, and at the same time, the tension spring 16 is prevented from being stretched beyond its elastic limit. Note that external forces such as wind pressure are naturally temporary, so if the external forces decrease, the original state can be quickly returned.

FIG. 3 is a diagram illustrating another embodiment of this invention. Note that the same parts as in the previous embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

That is, in this embodiment, an expansion joint 21 is provided between the top surface of one wall B and the side surface of the other wall D adjacent to each other with a gap A interposed therebetween.

In the expansion joint 21, the auxiliary member 10 on one side is fixed to the side surface of the wall D on the other side with an anchor plug 22. Further, the fixing member 24 to which the cover 23 is fitted has leg pieces 24a, 24a and hook parts 24c, 24, as in the previous embodiment.
c, but one leg piece 24a is connected to one wall body B.
The other leg piece 24a is brought into contact with the upper surface of the support member 7. Therefore, the fixing member 24 connects the upper end of the tension spring 16 to the vicinity of the other leg piece 24a.

Further, an upper cover 25 is provided between the cover 23 and the other wall D. When installing the upper cover 25, the coil spring 2
6, the lower end of which has been fixed in advance with a screw 27, is attached to the other wall D using an anchor plug 29.
an upper fixing member 30 fixed to a side surface of the coil spring 26 and having one end hooked to the mounting member 28;
are connected to the upper end of the frame with a screw 32. The upper fixing member 30 has a leg piece 30a at the other end that comes into contact with the upper surface of the cover 23, and the coil spring 26
Due to this action, the leg piece 30a is urged to come into pressure contact with the cover 23. Then, the upper cover 25 is fitted onto the upper surface side of the upper fixing member 30.

The restraining member 31 used in the above expansion joint 21 includes a horizontal part 31b, a restraining part 31c, and receiving parts 31d, 31, as in the previous embodiment.
In addition to the above-mentioned horizontal portion 31b, an overhanging portion 31e is provided continuously on the same plane as the horizontal portion 31b, and a screw insertion hole 31a is provided at the tip of this overhanging portion 31e. and,
The restraining member 31 prevents the fixing member 24 from moving when displacement occurs.
In order to avoid contact with the frame part, the tension spring 16
so as to be unevenly distributed so as to be closer to one wall B than the other wall B, so as to be able to follow the movement of the support member 7.
It is rotatably attached to the fixing member 24 side about a screw 17 that connects the tension spring 16 and the fixing member 24 and is coaxial with the axis of the tension spring 16.

In other words, since the expansion joint 21 described above connects the end of the cover 23 opposite to the end exposed to the outside and the tension spring 16, the expansion joint 21 has an overhanging portion 31e on the restraining member 31. By forming the restraining portion 31c, the tension spring 1
6 to the exposed end of the cover 23 to reliably prevent the cover 23 from being lifted up excessively when an external force such as wind pressure is applied to the exposed end. and prevents the coil spring 26 from being damaged. Also, gap A
The same effect as in the previous embodiment can be obtained with respect to the function of closing.

Note that the detailed structure of the expansion joint is not limited to the above embodiments; for example, one end of the support member may be rotatably connected to a predetermined position on one wall side, or It is also possible to configure the support member with a link mechanism. Furthermore, in each of the above embodiments, the case where the restraining member is attached using a screw connecting the fixing member and the tension spring is shown, but the restraining member is fixed through a shaft in substantially the same direction as the axis of the tension spring. It is also possible to directly attach the restraining member to another position on the member, or to provide a plurality of the restraining members. In addition to the frame shape described in the examples, the shape of the restraining member is such that the receiving part is opposite to the surface on the rotation direction side of the support member, and the receiving part is opposite to the surface on the side of the support member in which the tension spring is attached. For example, it may be bent into a U-shape or an S-shape so that the restraining portions can face each other, and can be modified as appropriate.

[Effects of the invention] As explained above, according to the expansion joint of this invention, both ends can be held in a rotatable or slidable state and cannot be detached from adjacent walls at appropriate intervals. A fixing member to which the inter-wall occluding cover is fitted is connected to the supporting member via a tension spring, and the fixing member is
a receiving part that faces the surface of the support member in the rotation direction; and a restraining part that faces the support member at a distance within the elastic limit range of the tension spring on the surface of the support member that is opposite to the tension spring mounting side. Since the restraining member is provided rotatably around an axis in substantially the same direction as the axis of the tension spring, even if an external force such as a large wind pressure that lifts the cover is applied to the cover, the support member With the restraining member that comes into contact with and prevents the cover from lifting, it is possible to firmly hold the cover against the external force without damaging the tension spring that connects the cover, and the restraining member does not rotate. Because it is flexible, there is no need to worry about interfering with the movement of the support member, and it has the excellent effect of being able to flexibly follow displacements in various directions that occur between the walls and continue to reliably close the space between the walls. has.

[Brief explanation of drawings]

Fig. 1 is a sectional view illustrating an expansion joint according to one embodiment of this invention, Fig. 2 is a plan view of the expansion joint shown in Fig. 1, and Fig. 3 is another embodiment of this invention. FIG. 4 is a sectional view illustrating an example of a conventional expansion joint. B, C, D... Wall, 1, 21... Expansion joint, 7... Support member, 13, 2
3...Cover, 14, 24...Fixing member, 15,
31... Suppressing member, 15c, 31c... Suppressing part,
15d, 31d...receiving portion, 16...pulling spring.

Claims (1)

[Scope of utility model registration request] Fixation in which the wall-to-wall closure cover is fitted via a tension spring to a supporting member that is irremovably held on adjacent walls at appropriate intervals with both ends rotatable or slidable. While connecting the parts,
The fixing member has a receiving part facing opposite to a surface on the rotation direction side of the supporting member, and a receiving part opposite to the surface of the supporting member on the opposite side to the tension spring mounting side at an interval within the elastic limit range of the tension spring. 1. An expansion joint characterized in that a restraining member including a restraining portion facing toward the tension spring is rotatable about an axis substantially in the same direction as the axis of the tension spring.