JP3979971B2 - Expansion joint - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an expansion joint that can be easily and economically attached to opposing housings with a gap to reliably close the gap.
[0002]
[Prior art]
Conventionally, in the expansion joint that absorbs the fluctuation by tilting the cover material of the gap when the gap between adjacent casings changes, the first cover plate having an inclined surface is fixed to one of the casings, and the other casing is inclined. A second cover plate having a surface is attached by a hinge, and a triangular protrusion is provided on the back side of the second cover plate. When the housing changes so that the gap is narrowed, the second cover plate is mounted on the first cover plate. I try to absorb fluctuations. (For example, see Patent Document 1)
[0003]
[Patent Document 1]
JP-A-7-43290 (2nd to 3rd pages, FIG. 1 and FIG. 2)
[0004]
However, when the first cover plate and the second cover plate are provided with inclined surfaces, it is necessary to form these inclined surfaces at an angle at which they can easily climb, so that it is difficult to process the cover plate, and both the inclined surfaces are inclined. Since the surfaces are in surface contact, there is a problem that resistance at the time of fluctuation is large and the cover plate is easily damaged, and further, workability is poor because each member is mounted in a narrow gap.
[0005]
[Problems to be solved by the invention]
The present invention eliminates the above-mentioned problems, adopts a split coupling type, and employs a holder provided with an inclined surface for tilting the cover material on the back surface, has a simple structure, is easy to construct, and can reliably absorb fluctuations and is highly economical. The problem is to provide an expansion joint.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, the expansion joint according to the present invention employs the following configuration.
In the expansion joint in which the cover material covering the gap between the opposing housings with a gap is attached to the pivotal support member provided on one housing so as to be tiltable via a holder,
The holder is divided into a first holder on the pivot side and a second holder on the opposite side, and is configured to be integrated by joining,
The second holder is provided with a slope whose center side is raised on the back surface, and the actuator supported by the other housing is in linear contact with the slope,
The first holder is engaged with a spring member that biases the cover material to tilt toward the housing.
[0007]
The holder that is divided into the first holder and the second holder includes a joint member that joins both holders so as to be integrated when engaged with the divided portion.
[0008]
The holder divided into the first holder and the second holder has a fixed width for the second holder having a slope, and the width of the holder when the combination of the first holder is changed with a plurality of different widths. Can be increased or decreased.
[0009]
The spring member that engages with the first holder and urges the cover member is a twin spring that can evenly press the first holder from both sides.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The expansion joint according to the present invention will be described below with reference to the drawings.
[0011]
The expansion joint denoted by reference numeral 1 in FIG. 1 has a cover member 4 that covers the gap S between the housing 2 and the housing 3 facing the same plane with a gap S attached to a pivot member 5 provided on one housing 2. 6 is attached to be tiltable. Then, the holder 6 is divided into a first holder 6a on the pivot side and a second holder 6b on the opposite side, and when the joint member 7 provided in the divided portion is engaged, it is integrated. On the back surface of the second holder 6b, an inclined surface 8 having a higher central side is provided, and the actuator 9 supported by the other housing 3 is brought into linear contact with the inclined surface 8, and the cover material 4 is attached to the first holder 6a. The spring member 10 that is biased so as to be tilted toward the housing sides 2 and 3 is engaged.
[0012]
The one casing 2 and the other casing 3 have wall materials 11 attached to their surfaces. This wall material 11 is a well-known one formed in a long shape with a required width, and a frame material 12 is attached to a side edge. As shown in FIGS. 2 (a) and 2 (b), The side piece 12a parallel to the side edge of the wall material 11 is a long one in which a short front piece 12b and a long rear piece 12c are bent at right angles, and are attached to the casing 2 and the casing 3 with the rear piece 12c. Then, on the rear end side of the side piece 12 a of the frame material 12, a blindfold piece 12 d whose front end faces the back end of the cover material 4 is attached.
[0013]
The cover material 4 is made of the same material as the wall material 11 and has a width sufficient to close the gap S between the housing 2 and the housing 3 and is formed into a long object as shown in part in FIG. The material 13 is fitted. The frame member 13 has a structure in which a short front piece 13b is bent at the front side of the side piece 13a parallel to the side edge of the cover material side 4 and a long rear piece 13c is bent at a right angle at the rear piece 13c. On the outer end side, a pair of locking rods 14 for engaging the edge of the holder 6 is provided. The frame material 13 is fixed by sandwiching the rear piece 13c of the frame material with a frame presser in which the holder 6 and the reinforcing protrusions 15 are formed.
[0014]
As shown in FIG. 4A, the pivotal support member 5 that supports the holder 6 so as to be tiltable to the one housing 2 is formed in a short shape, and an attachment hole 16 is formed in the central portion, and a screw 17 is provided in the attachment hole 16. As shown in FIG. 1, the pivot member 5 is fastened and fixed to the housing 2 together with the frame material 12. A circular shaft 18 that engages a post-notch circular groove provided in the holder 6 is supported by a support piece 19 at the end on the gap S side.
[0015]
The holder 6 has a width at which both edges are engaged with a pair of locking rods 14 included in the frame member 13 attached to the cover member 4, and the length is formed as short as shown in FIG. The holder 6 is divided into a first holder 6a on the pivot side and a second holder 6b on the opposite side, and when the joint member 7 provided in the divided portion is engaged, the first holder 6a and the first holder 6a Two holders 6b are integrated to form a holder 6 having a desired width.
[0016]
As shown in FIG. 5A, the first holder 6 a is provided with a notched groove 20 that fits to the circular axis 18 of the pivotal support member 5 on the outer end side of the rear surface, and a spring member inside the notched circle groove 20. 10 is provided with a receiving seat 21 for supporting the coil portion, and the inner end side is a trapezoidal cross-section frame-like structure portion 22, and a projecting piece 24 having a locking step portion 23 constituting the joint member 7 on the front side of the inner wall 22 a. Provided, a circular shaft 25 constituting the joint member 7 is provided on the rear side, a receiving piece 26 of the spring member 10 is provided on the intermediate portion, and a concave groove to be engaged with the reinforcing protrusion 15 of the frame retainer 36 on the front surface. 27 is provided.
[0017]
As shown in FIG. 5B, the first holder 6a extends the distance between the outer end provided with the notched groove 20 and the frame-like structure portion 22, the width of the frame-like structure portion 22, and the like. A plurality of types of holders 6 having increased widths can be formed by preparing a plurality of widths larger than the first holder 6a shown in (a) and joining the first holders 6a to the second holders 6b. . In this case, since the width of the first holder 6a is increased, when the same spring member 10 is used, the elastic portion 10c does not reach the receiving piece 26 provided on the inner wall 22a of the frame-like structure portion 22. Therefore, when the position where the receiving piece 26 is provided is converted to the outer wall 22b of the frame-like structure portion 22 as shown in FIG. 5B, the elastic portion 10c is engaged with the receiving piece 26 even if the same spring member 10 is used. Thus, the spring member 10 can be shared.
[0018]
As shown in FIG. 5C, the second holder 6b has an outer end on the back surface as a flat surface portion 28, and an inner side of the flat surface portion 28 is formed as a one-step or multiple-step inclined surface 8 with a central portion higher. Are connected to the front surface by a support wall 29, a locking bar 31 constituting the joint member 7 is formed on the projecting piece 30 on the front side of the support wall 29, and a joint member on the projecting piece 32 projecting to the rear side 7 is formed, and a concave groove 34 that engages with the reinforcing protrusion 15 formed on the rear surface of the frame retainer 36 is provided on the front surface.
[0019]
A required number of holders 6 are attached to the rear surface of the long cover material 4 at a predetermined interval. For this reason, in the concave groove 27 of the first holder 6a and the concave groove 34 of the second holder 6b, together with the frame presser 36 with a tapping drilling screw, a screw is cut while drilling and tightened as shown in FIG. 6 and the frame material 13 are sandwiched and fixed. Further, the cover material 4 is fitted to the frame material 13 and coupled with screws 38 as shown in FIG.
[0020]
The actuator 9 is formed in a circular cross section so as to be in linear contact with the inclined surface 8 of the holder 6 and supported at the tip of the support plate 39 as shown in FIG. As shown in FIG. 1, the mounting hole 40 is fastened to the housing 3 together with the frame material 13 of the wall material 11 as shown in FIG. 1, and the operating element 9 normally engages with the flat portion 28 of the second holder 6 b in the holder 6. ing. However, when a variation occurs in which the gap S is narrowed in the casings 2 and 3, it engages with the inclined surface 8 of the second holder 6b, and this actuator 9 is connected to the shaft 41 as shown in FIG. A roller structure or the like that is rotatably attached to the support plate 39 is most preferable for smooth and reliable operation.
[0021]
As shown in FIG. 4 (d), the spring member 10 is formed by rounding spring steel a plurality of times to form a central coil portion 10a, and a fixed portion 10b is extended from one side of the coil portion 10a to the coil portion. As the configuration in which the elastic portion 10c is extended from the inside to the other side of 10a, the fixing portion 10b is connected by a connecting piece 10d, and two spring members 10 are paired to apply force equally to the holder 6 from both sides. It is a twin spring that acts.
[0022]
As shown in FIG. 1, the spring member 10 supports the intermediate coil portion 10a on the receiving seat 21 of the holder 6, locks the connecting portion 10d for connecting the fixing portion 10b to the pivot member 5, and the elastic portion 10c. Is engaged with the receiving piece 26 of the second holder 6b, the holder 6 is tilted about the circular axis 18 by the elasticity of the spring member 10, and the cover material 4 is pressed against the housings 2 and 3 to close the gap S. It is like that.
[0023]
In the expansion joint 1 shown in the above embodiment, the circular shaft 25 provided in the first holder 6a is engaged with the notch groove 33 provided in the second holder 6b as shown in FIG. When 6b is pushed down in the direction of the arrow, the locking rod 31 of the second holder 6b engages with the locking step 23 of the first holder 6a, so that the first holder 6a and the second holder 6b are shown in FIG. Are joined and integrated to form a holder 6 having a required width. Therefore, if the rear piece 13c of the frame material 13 of the cover material 4 is attached to the holder 6 as shown in FIG. 6C and the cover material 4 is attached to the frame material 13, the cover material 4 with the holder 6 can be formed.
[0024]
When the cover material 4 is completed, the support plate 39 of the actuator 9 is attached together with the frame material 12 of the wall material 11 to one housing 3 from the outside, and the holder 6 of the cover material 4 together with the frame material 12 of the wall material 11 is attached to the other housing 2. When the pivot member 5 pivotally attached is attached and the cutout groove 20 of the first holder 6a is engaged with the circular axis 18 of the pivot member 5, the cover member 4 is attached to the housing 2 so as to be tiltable. An expansion joint 1 that closes the gap S is configured.
[0025]
In the constructed expansion joint 1, if the housing 2 and the housing 3 are kept in a normal state, the holder 6 engages the planar portion 28 of the second holder 6 b with the actuator 9 by the bias of the spring member 10. The cover member 4 is placed between the wall members 11 on both sides so as to be flush with the wall members 11 and closes the gap S. However, when an earthquake, ground subsidence, etc. occur and the gap 2 and the casing 3 fluctuate so that the gap S narrows, the actuator 9 engages with the slope 8 of the second holder 6b in the holder 6 and Because of the linear contact, the actuator 9 moves smoothly and lightly on the inclined surface 8 toward the higher direction, and exerts an outward pressing force on the holder 6. For this reason, the holder 6 is tilted outward about the circular axis 18 against the spring member 10, and the free end of the cover member 4 is displaced outward from the wall member 11, so that the housing 2 and the housing 3 As shown in FIG. 7 and FIG. 8, the gap is reduced without any trouble.
[0026]
In addition, when the fluctuation S in which the gap S between the housing 2 and the housing 3 is widened due to an earthquake, ground subsidence, or the like, the actuator 9 moves toward the end of the flat portion 28 of the second holder 6b in the holder 6 to cover As shown in FIG. 9, 4 copes with fluctuations in which the gap S widens while maintaining the same state as the wall materials 11 on both sides.
[0027]
When the normal gap S between the housing 2 and the housing 3 is large, the first holder 6a having a large width shown in FIG. 5B is used instead of the first holder 6a having a narrow width shown in FIG. The first holder 6a is joined to the second holder 6b to form a holder 6 having an increased width, and the holder 6 is attached to the cover member 4 to the pivot member 5 attached to the housing 2. Pivot. As a result, the expansion joint 1 is configured to close the large gap S as shown in FIG. 10 with the tiltable cover member 4, and various types of first holders 6 a having different width dimensions are prepared. For example, the first holder 6a and the second holder 6b can be joined to freely obtain a holder 6 having various width dimensions, and can cope with a wide range of changes in the gap S between the housing 2 and the housing 3. Joints can be provided.
[0028]
Further, the expansion joint 1 is used not only when the housing 2 and the housing 3 are aligned with the gap S, but also when the housing 2 and the housing 3 are arranged so as to form a corner with the clearance S. it can. In this case, as shown in FIG. 11, one housing 2 is in a state of being orthogonal to the other housing 3, so that the support member 5 for pivotally attaching the holder 6 of the cover material 4 is attached to the housing 2. Is different from the above embodiment in that a support piece 5b that is bent at right angles to the gap S side is provided and a circular shaft 18 is provided at the tip of the support piece 5b. The same operational effects are exhibited.
[0029]
The expansion joint of the present invention can be used not only for closing the gap S generated on the wall surfaces of the casing 2 and the casing 3 as described above, but also for closing the gap S generated on the ceiling surface of the casing 2 and the casing 3. It is needless to say that can be used in the same manner to exhibit the same effect.
[0030]
【The invention's effect】
Advantages of Claim 1 (1) Since a slope is provided on the back surface of the holder, and the tilt of the cover material is caused by this slope, the structure of the cover material is simplified and the manufacture is facilitated, and the attachment to the housing is not required. Construction is easy because it can be done outside.
(2) When the holder is divided and joined, the unit product is small and light in weight, low in cost, and excellent in workability.
(3) When the holder is an aluminum extrusion-molded product, the extrusion die is small, so the mold cost is low, the moldability is excellent, and the accuracy of the product is improved.
[0031]
Effect of Claim 2 The holder formed by dividing and joining with a joint member is compact before joining and is convenient for storage, transportation, etc. If joined, it becomes an integrated product and is easy to construct and has excellent strength.
[0032]
Advantages of Claim 3 The second holder having a complicated structure has a constant width, and the first holder having a simple structure is provided with a plurality of types having different widths. Can be obtained economically.
[0033]
According to the fourth aspect of the present invention, since the spring member of the twin structure applies the elastic force evenly from both sides to the holder, the gap by the cover material is stably and reliably closed, and failure due to breakage of the spring member is unlikely to occur.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a normal state of an expansion joint. FIGS. 2A and 2B are perspective views showing a part of a frame material used for a wall material. FIG. 3 is a perspective view showing a part of a cover material. 4 (a), (b), (c) and (d) are perspective views showing the pivot member of the holder, the holder, the actuator of the holder, and the spring member for biasing the holder. (C) is a perspective view showing two first holders and one second holder constituting the holder. FIGS. 6 (a), 6 (b), and 6 (c) show the first holder and the second holder. FIG. 7 is a cross-sectional view of a state in which the holder is configured by joining. FIG. 7 is a cross-sectional view of a state in which the expansion joint copes with a variation in which the gap of the housing is narrowed. FIG. FIG. 9 is a cross-sectional view of a state in which the fluctuation of the gap of the housing is dealt with. FIG. 10 is a large gap change. Sectional view of the normal of the expansion joints used in the gap of the corresponding cross-sectional view of a normal of the expansion joints of the structure of FIG. 11 internal corner EXPLANATION OF REFERENCE NUMERALS
DESCRIPTION OF SYMBOLS 1 Expansion joint S Gap | intervals 2 and 3 Housing 4 Cover material 5 Pivoting member 6 Holder 7 Joint member 8 Slope 9 Actuator 10 Spring member

Claims (4)

In the expansion joint in which the cover material covering the gap between the opposing housings with a gap is attached to the pivot member provided on one housing so as to be tiltable via a holder,
The above holder is divided into a first holder on the pivot side and a second holder on the opposite side, and when the joint member provided in the divided portion is engaged, it is integrated.
The back surface of the second holder is provided with an inclined surface whose center side is raised, and an operator supported by the other housing is linearly contacted with the inclined surface,
An expansion joint, wherein the first holder is engaged with a spring member that urges the cover member to tilt toward the housing. The holder formed by dividing the first holder and the second holder includes a joint member that joins both holders so as to be integrated when engaged with the divided portion. Expansion joint. The holder divided into the first holder and the second holder has a fixed width for the second holder having a slope, and the width of the holder when the combination of the first holder is changed to a plurality of different widths. The expansion joint according to claim 1, wherein the expansion joint can be increased or decreased. The expansion member according to any one of claims 1 to 3, wherein the spring member that is engaged with the first holder and biases the cover member is a twin spring that can uniformly press the first holder from both sides. Joint.

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