JP2510007Y2 - Expansion joint for Kakuken gutter - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a stretchable joint in which corner eaves gutters are joined while allowing their thermal expansion and contraction.

(Prior Art) The eaves gutter expands and contracts mainly in the longitudinal direction due to the temperature difference between summer and winter. Therefore, a joint that allows expansion and contraction is used at the joint portion. Such an expandable joint is composed of one joint member that slidably holds the mating ends of the eaves gutter, and holds the mating ends of the corner eaves gutter. An example is one that has a receiving portion at each end and is composed of two inner and outer joint members that are slidable along the axial direction and that are watertightly polymerized. The present invention relates to the improvement of the latter expansion joint. More specifically, the elastic joint of the above type is composed of two inner and outer joint members formed in a shape similar to the eaves gutter, and one end of each joint member is connected to the end of the eaves gutter. The inner joint member is slidable relative to the outer joint member in the axial direction and is watertightly polymerized through the packing material such as rubber to expand and contract due to the heat of the eaves gutter. Are absorbed by the mutual sliding of the two joint members.

(Problems to be solved by the invention) By the way, not only buildings with large roof areas such as factories and warehouses, but also large amount of drainage, luxurious and good-looking, are used in general houses. However, in this case also, in this case, the inner and outer joint members forming the above-mentioned expansion and contraction joint are formed in a rectangular shape.
However, since the inner joint member is held by the outer joint member from the outside, there is nothing to support it inside,
In addition, because of its peculiar shape (composed of a vertical wall and a horizontal bottom wall) compared to a half-circle gutter, it was prone to inward deformation, which often caused water leakage. By the way, the outer joint member can be prevented from being deformed by providing a rib or the like on the outer surface thereof, but the inner joint member is restricted by the watertight and mutually slidable overlapping relationship with the outer joint member. Since it is impossible to provide ribs on the outer surface, let alone the flow of rainwater on the inner surface, the reinforcing effect of the ribs was naturally not desirable. Particularly, in the arranged corner eaves gutter, the wind does not pass through the inside so much that heat is likely to be accumulated, and the inner joint member has a higher temperature than the outer joint member,
At the other end on the opposite side of the receiving part, this was remarkable, and this part was often deformed.

The present invention has been made in view of the above, and is to provide a novel expansion and contraction joint which effectively prevents the deformation of the inner joint member and enhances the practical value in the corner eaves gutter.

(Means for Solving the Problems) An expansion joint for a corner eaves gutter according to the present invention which achieves the above object will be described with reference to the accompanying drawings.

That is, the expansion and contraction joint 1 for corner eaves gutter of the present invention is used as a corner eaves gutter T, T.
Having two receiving ends 21 and 31 for connecting the mating end portions T ₁ and T ₁ of each other, and two inner and outer joints which are slidable along the axial direction and are watertightly polymerized The other end portion (the end portion on the opposite side of the receiving portion 21) 20 of the inner joint member 2 that includes the members 2 and 3
In addition, a reinforcing rod 4 is laterally bridged between the side wall portions, and a striated rib rod 41 is bridged from a substantially central portion of the reinforcing rod 4 to a substantially central portion of the side wall portion of the inner joint member 2. It is characterized by.

(Operation) A description will be given of a method of joining a corner shovel using the expansion joint 1 for the corner shovel having the above-described configuration. Receiving parts 21, 31 of each joint member 2, 3
The eaves gutters T and the end portions T ₁ and T ₁ of the T are joined and integrated with an adhesive or the like. In such a joined state, the expansion and contraction of the corner eaves troughs T, T in the axial direction due to the heat is absorbed by the mutual sliding of the inner and outer joint members 2, 3, so that the corner eaves troughs T, T are deformed. No Thus, the receiving portions 21 and 31 of the joint members 2 and 3 are reinforced by the synergistic effect of the double structure of these receiving portions 21 and 31 and the eaves gutters T and T. There is no. Further, since the reinforcing rod 4 is laid horizontally between the upper side wall portions at the other end 20 of the inner joint member 2, the inner joint member 2 in this portion is not deformed inward, and the outer side thereof is Since it is surrounded by the circumscribing member 3, it is reinforced by the synergistic effect of both members and does not deform outward. Further, since the rib rib rods 41, 41 are provided between the reinforcing rod 4 and the side wall portions, the side wall portion of the inner joint member 2 is prevented from being deformed by heat.
The water tightness with the outer joint member 3 is maintained for a long time.

Further, since the other end portion 30 of the outer joint member 3 (the end portion on the side opposite to the receiving portion 31) surrounds the inner joint member 2,
In this case as well, there is no fear of being deformed by being reinforced by the synergistic effect of both. Therefore, the expansion and contraction joint 1 is kept in a non-deformed state, and water leakage does not occur.

(Example) Next, an example will be described.

1 to 3, the expandable joint 1 has a box shape in which the upper side is open and the front and rear walls are at the same height, and the inner joint member 2 and the outer joint member 3 are superposed. A receiving portion 21 for sandwiching an end portion T ₁ of a corner eaves trough T with a sandwiching piece 22 at one end of the inner joint member 2.
In this receiving portion 21, the eaves gutter T and the inner joint member 2 are integrally connected via an adhesive or the like. Further, at the upper ends of the widthwise side portions of the inner joint member 2 corresponding to the receiving portion 21,
Ear holding portions 23, 23 for holding the ear portions T ₂ , T ₂ of the eaves trough T are formed. Then, the box-shaped sliding part 24 is connected to the receiving part 21.
Is formed, and locked pieces 26, 26 are formed at the upper ends of both sides in the width direction of the sliding portion 24. At the end of the sliding portion 24, that is, at the other end 20 of the inner joint member 2, a straight reinforcing rod 4 having an L-shaped cross section is installed horizontally between the upper ends of both side wall portions 25, 25 of the inner joint member 2. Has been done. Tie-shaped rib rods 41, 41 are provided between the reinforcing rod 4 and the substantially central portions of the eaves gutter side wall portions 25, 25. Further, in the illustrated example, a reinforcing rib 20a extending in the width direction is provided on the inner surface of the other end portion 20 so as to project at substantially the same height as the sandwiching piece 22.
The deformation of is effectively prevented.

On the other hand, the outer joint member 3 has a clip at one end similar to the above.
The receiving portion 31 by 32 is formed, and the end portion T _{1 of the} other corner eaves trough T to be joined is integrally joined. In addition, the receiving portion 31 of the outer joint member 3 to the other end 30 is made thick and reinforced, and a groove extending in the width direction is formed on the inner surface of the thick end, and the groove is made of rubber. The packing 33 is attached in a semi-embedded state. Further, the other end 30 of the outer joint member 3 has an L-shaped locking piece for locking the locked pieces 26, 26 at the upper ends of both side portions in the width direction.
34, 34 are connected in series, and suppressing pieces 35, 35 that cover at least the upper side of the rubber packing 33 are connected in series. When the inner joint member 2 is superposed on the inside of the outer joint member 3, the outer surface of the sliding portion 24 of the inner joint member 2 is pressed against the packing 33, and the L-shaped locking pieces 34, 34 lock the locked piece 26. , 26 are locked to prevent the inner joint member 2 from separating from the outer joint member 3 above, and prevent the wall portions 25, 25 of the sliding portion 24 from falling inward. Moreover, the upper and lower backlash of the inner joint member 2 and the outer joint member 3 is prevented by the superposition of the locked pieces 26, 26 and the restraining pieces 35, 35, and the inner joint member 2 is lifted by the restoring elasticity of the packing 33. It is blocked, and the waterproof function is reliably exhibited.
A lubricant such as silicon grease is applied to the surface of the packing 33 to smooth the sliding of the inner joint member 2 and prevent the rainwater from leaching due to the capillary phenomenon. Therefore, in the actual joining work, if the work is carried out only with the reinforcing rods 4, the outer joint member 3 may slip off, so it is desirable to carry out the work with both joint members 2, 3. The locking pieces 34, 34 and the restraining pieces 3 are provided on the upper ends of both sides of the outer contact member 3.
5 and 35 are provided in order to secure the elasticity of the locking pieces 34 and 34, facilitate the fitting of the inner joint member 2, and prevent the inner joint member 2 from being deformed. Therefore, the sliding part of the inner joint member 2
The receiving portion side of 24 is prevented from being deformed inward by the locking pieces 34, 34, while the other end portion 20 has a reinforcing rod 4 and a bar-shaped rib rod.
Deformation is blocked by 41, 41. Further, since the reinforcing rod 4 is formed between the upper ends of the side wall portions 25, 25, it is possible to prevent the side wall portions 25, 25 from inclining inward and at the same time prevent inward bulging. The function of the reinforcing rod 4 also acts as a function of preventing the deformation of the inner joint member 2 when it is uncooled during manufacturing, and improves the waterproof function of the expandable joint 1.

Further, ridged rib rods 41, 41 are installed between the reinforcing rod 4 and the eaves gutter side wall portions 25, 25, and the ridged rib rod 41 is provided.
Has one end extending from substantially the center of the reinforcing rod 4 and the other end being the other end 20
Is erected on the reinforcing ribs 20a, and its position is slightly above the central part. Side wall portion due to the installation of the rib rods 41, 41
The deformation of 25 and 25 is prevented, and there is no concern about water leakage from this part. That is, the side walls 25, 25 of the inner joint member 2 tend to expand in the width direction due to heat storage or the like, but the outer joint member 3 and the locking pieces 34, 34 reinforced by the wall thickness make the expansion the most. Attempts to subside by the phenomenon of weak inward bending. If this inward bending occurs, the packing 35 and sliding parts
Since a gap is created between the inner joint member 2 and the joint 24, the inward bending of the inner joint member 2 is reliably prevented by the rib rods 41, 41 to prevent water leakage. It can be lost.

Further, a reinforcing rib 20a is provided on the other end 20 of the inner joint member 2 so that the other end 20 is more effectively prevented from being deformed. In particular, the reinforcing rods 4 and the reinforcing ribs 20a work effectively when the gutters store the heat and prevent the inner walls of the side wall portions 25, 25 and the bottom wall portion from being curved inward, and the inner joint member 2 and the outer joint portion. A gap is not formed between the member 3 and the water leakage is reliably prevented. Further, since the outer joint member 3 is made thick and reinforced and the outer surface is flush, the outer joint member 3 has a neat appearance.

In this embodiment, since the other end portion is surely reinforced by the bar ribs 41, 41, the reinforcing rib 20a is not always necessary.

Protrusions 27, 27 are formed on both upper ends of the other end of the inner joint member 2, and the protrusions 27, 27 function as stoppers for engaging the engaging pieces 34, 34. The contact member 2 is prevented from coming off.

In the present invention, the structures of the inner and outer joint members 2, 3 are not limited to those shown in the drawings, and it goes without saying that other modifications can be made without departing from the present invention.

(Effect of the Invention) As described above, in the expansion joint for the corner eaves gutter of the present invention, the reinforcing rod is laid horizontally on the upper end of the other end of the inner joint member opposite to the receiving portion. Bending and deformation are prevented as much as possible. Therefore, the fear of leakage of rainwater due to this deformation is eliminated, and the practical value in the corner shovel is dramatically improved. Further, by providing a cantilever rib rod between the reinforcing rod and the side wall portions, the bending of the reinforcing rod and the deformation of the side wall portion are completely prevented, and there is no fear of water leakage from this portion.

[Brief description of drawings]

1 is a perspective view showing an embodiment of the joint of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is a side view of the same. (Explanation of symbols) 1 ... Expansion joint, 2 ... Inner joint member, 21 ... Receiving part, 20
...... Other end part, 3 ...... Outer contact member, 31 ...... Reception part, 4 ......
Reinforcing rods, 41 …… Ridge-shaped rib rods, T …… Kakunoken gutter, T ₁ ……
Eaves gutter end.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 61-140019 (JP, U) Rikai 56-143430 (JP, U) Rikai 64-36426 (JP, U)

Claims (1)

(57) [Scope of utility model registration request] 1. A joint having two inner and outer joints, each of which has a receiving portion for connecting the mating end portions of a square eaves trough, and which is slidable along the axial direction and is watertightly polymerized. An expansion and contraction joint for a square eaves gutter comprising a member, wherein a reinforcing rod is laterally provided between the other end portion of the inner joint member and an upper side wall portion, and the side wall portion of the inner joint member extends from substantially the center portion of the reinforcing rod. A telescopic joint for corner eaves gutter, which is characterized in that a cantilever-shaped rib rod is erected in a substantially central portion of the.